Miracle-dz/UniFAR-FTUs huggingface dataset:
The Integral Energy-Momentum 4-Vector and Analysis of 4/3 Problem Based on the Pressure Field and Acceleration Field

As a result of integration of the equations of motion with regard to the pressure field and acceleration field the system’s integral energy-momentum 4-vector is found. It is shown that this vector in the covariant theory of gravitation must be equal to zero. This allows us to explain the 4/3 problem and the problem of neutrino energy in an ideal spherical supernova collapse. At the same time, in order to describe the system’s state, instead of the integral 4-vector we must use the four-momentum, which is derived from the Lagrangian. The described approach differs substantially from the results of the general theory of relativity, in which the integral 4-vector serves as the system’s four-momentum, and the stress-energy tensor of the gravitational field is replaced by the corresponding pseudotensor.
Cuda Based Fuzzy C-Means Acceleration for the Segmentation of Images with Fungus Grown in Foam Matrices

Abstract In the paper authors verify the advantages of GPU computing applied to fuzzy c-means segmentation. Three different algorithms implementing FCM method have been compared by their execution times. All tests refer to the images of polyurethane foam matrices filled with fungus (mould). They are aimed at separating mould regions from the matrix base. The authors proposed a method using CUDA programming tools, which significantly speedsup FCM computations with multiple cores built in a graphic card.
High-resolution visible spectroscopy of the jet-driving star Th 28

Context. We present a study of the extreme T Tauri star Th 28, a young stellar object in the Lupus 3 cloud whose spectrum displays all the varieties of signposts associated with early stellar activity. Th 28 is the driving source of a fast jet, making it a very promising target to study the disk-jet connection. Aims. We try to identify and investigate the different structural components that contribute to the different emission lines in the spectrum of the Th 28 central source. Methods. We obtained high-resolution visible spectroscopy with the UVES spectrograph at the VLT, using the resolved profiles of both permitted and forbidden lines as tracers of gas with different kinematic and physical properties, complemented with other observations from the literature. Results. We identify four distinct structural components that contribute to the visible emission-line spectrum of Th 28. The first one, dominating most of the permitted and forbidden lines, is probably associated with the origin of the outflow that in the past produced the Herbig-Haro objects seen to the west of Th 28. The second one is an uncollimated stellar wind characterized by high excitation and temperature, as shown by the broad profile of the intense [OIII] lines. The third component, traced only by permitted lines, appears as a redshifted tail extending up to radial velocities of +450 km s −1 , which we attribute to magnetospheric accretion. From the latter
Nassaufbereitung von Bauschutt mit Schwingsetzmaschinen

En regle generale, la preparation par la voie seche ne suffit pas pour obtenir a partir de gravats des produits satisfaisant a des exigences elevees. Le plus souvent, ce but ne peut etre atteint que par voie humide. A l'exemple de l'installation de preparation de gravats de l'entrepreneur hollandais Groot a Heilo, on demontre qu'en remplacant la phase de separation a l'air par un bac a tamis oscillant, on peut obtenir une qualite de produit elevee. Par des essais effectues en usine, on a prouve que les gravats traites avaient une purete de 99,9% et depassaient ainsi de loin les exigences de la norme DIN 4226 Granulat pour beton. C'est pouquoi la Societe Groot a decide de remplacer la phase de separation a l'air par bac a tamis oscillant.
The price of motivating corporate top managers using warrants

In today’s economic environment, an important characteristic of top-echelon executives includes not only their qualification and business reputation but also their motivation for the company development. The majority of presentday investigators have come to a general consensus thatthe performance of the top management in a company must be objectively evaluated by the market, rather than by the subjective human factor (i.e., by the top managers themselves). While using warrants to evaluate the motivation of the top-managers is undoubtedly appealing, it is evident that this motivation, as any other, must have a certain value for the company, and needs to be pre-evaluated. Even though the due date for new warrants will occur in the far future, the market is even now revaluating corporate securities on the basis of future opportunities. The common-stock value is adjusted with allowance for anticipated dilution that results from exercising warrants. The Black—Scholes model is used in most cases in order to evaluate European options, since it provides a conservative, i.e., the lowest, option value. However, a model with dividends for a European-type warrant should be used for more realistic corporate business presentation. In such a case, the warrant and stock values can be theoretically adjusted until the warrant value has become equal to zero. The stock value, however, will significantly decrease as compared to the original market value. But in actual practice, markets ineffectually respond to issuing warrants by companies; therefore, the stock value declines in a minor way. We then recommend to decide upon the adjustment of the fair stock price which would be following the first specification of the fair warrant price. In this case, the price of motivating top managers using warrants is calculated through multiplying the magnitude of reduction in the stock value by the number of company shares in circulation. TOP MANAGEMENT MOTIVATION; WARRANTS; BLACK-SCHOLES MODEL; BLACK—SCHOLES MODEL WITH DIVIDENDS.
Analyzing the Customer Attrition using Survival Techniques

Survival analysis techniques are used to study the amount of time between entry into observation and a subsequent event in estimating insurance attrition. Retention has always been a worldwide concern. A study is carried out on the profile of the policyholder and policies that produces better persistency based on one of the Sri Lanka experience using the nonparametric analysis (e.g. Kaplan-Meier estimator and life table analysis) and Cox regression model available through SPSS Statistics 20. This paper uses the survival model to evaluate the impact of covariates on the survival curves over a period of time. Newly opened life policies were considered during the period of 1st of January 2013 and 30th of June 2014 and our study period was end at 30th of June 2016. Survival analysis techniques can take into account for dealing with time-dependent variables and can help researchers to understand how insurance attrition impacts to the economic environment. Instead, the survival model provides much more information to the management and the people who deal with policies than what the regression model can offer.
A Review of Application of Signal Processing Techniques for Fault Diagnosis of Induction Motors – Part I

The use of efficient signal processing tools (SPTs) to extract proper indices for fault detection in induction motors (IMs) is the essential part of any fault recognition procedure. In the first part of the present paper, we focus on Fourier-based techniques, including fast Fourier transform and short time Fourier transform. In this paper, all utilized SPTs which have been employed for fault detection in IMs are analyzed in detail. Then, their competency and their drawbacks to extract indices in transient and steady state modes are criticized from different aspects. Different kinds of faults, namely, eccentricity, broken bar, and bearing faults as the major internal faults in IMs, are investigated. Review History: Received: 31 July 2017 Revised: 27 August 2017 Accepted: 27 August 2017 Available Online: 23 October 2017
Ultrasonic cavitation induced degradation of Congo red in aqueous solutions

Ultrasonic cavitation induced degradation of Congo red in aqueous solution was investigated for a variety of operating conditions. It is found that the degradation of Congo red in aqueous solution follows pseudo-first-order reaction kinetics and the degradation rate is dependent on the initial concentration of Congo red, the temperature and pH of the aqueous medium. The effects of Fe 2+ and Fenton reagent addition on the sonochemical degradation of Congo red were also investigated. The results obtained here indicate that the degradation rate of Congo red in aqueous solution was substantially accelerated by Fe 2+ , NaCl or Fenton reagent addition. Keywords: Degradation; Congo red; cavitation; sonochemistry DOI = 10.3329/cerb.v14i2. 5899 Chemical Engineering Research Bulletin 14 (2010) 119-123
The Gould's Belt Distances Survey

Abstract Very Long Baseline Interferometry (VLBI) observations can provide the positions of compact radio sources with an accuracy of order 50 micro-arcseconds. This is sufficient to measure the trigonometric parallax and proper motions of any object within 500 pc of the Sun to better than a few percent. Because they are magnetically active, young stars are often associated with compact radio emission detectable using VLBI techniques. Here we show how VLBI observations have already constrained the distance to the most often studied nearby regions of star formation (Taurus, Ophiuchus, Orion, etc.) and have started to provide information about their internal structure and kinematics. We will then briefly describe a large project, the ‘Gould's Belt Distances Survey,’ which has been designed to provide a detailed view of star formation in the solar neighborhood using VLBI observations.
The Complexity and Diversity of Wicked Problems in School Contexts

Hong, Nguyen T. T. 2018. The complexity and diversity of wicked problems in school contexts. Master’s Thesis in Education. University of Jyväskylä. Department of Education. Globalization is a hidden context for educational change, which results from the interplay among social, political, and economic matters. A lot of education reform and challenging problems in education was mentioned in twentieth century. However, little research on recent challenging problems has been done lately. That is the motivation for this study, which contributes to interpretation of most recent challenging problems, namely, wicked problems in education in twenty first century. Data for this research is taken from “Collaborative leadership processes in the changing education”’ (LED) project. First, the research on specific wicked problems in education are conducted in six educational organization. In addition, case study research is used to discuss the educational organizations’ contexts which relate to wicked problems. Then, the thematic inductive analysis is utilized to figure out the complexity and diversity of wicked problems in these organizations. Relating to complexity of wicked problems, results stated that wicked problems were not only harmful but also essential. In addition, wicked problems had either negative or positive impact to educational organization. Mentioning diversity of wicked problems, results showed that wicked problems were different if the variety existed in the schools while wicked problems were distinctively different if the difference involved competition among educational organizations. Teachers and students were main factors affected by wicked problems. However, schools did not have sufficient comprehension of their wicked problems. Therefore, helpful suggestions are presented in discussion part of this thesis in order to improve educational organizations’ situation.
Chemical abundances of fast-rotating OB stars

Abstract Fast rotation in massive stars is predicted to induce mixing in their interior, but a population of fast-rotating stars with normal nitrogen abundances at their surface has recently been revealed (Hunter et al.2009; Brott et al.2011, but see Maeder et al.2014). However, as the binary fraction of these stars is unknown, no definitive statements about the ability of single-star evolutionary models including rotation to reproduce these observations can be made. Our work combines for the first time a detailed surface abundance analysis with a radial-velocity monitoring for a sample of bright, fast-rotating Galactic OB stars to put strong constraints on stellar evolutionary and interior models.
The Application of Power Series - Padé Method for Solving MHD Viscous Flow Over a Permeable Shrinking Sheet

This study apply an integrated symbolic power series method - Pade approximants technique (PS - Pade) to solve a system of nonlinear differential equations arising from the similarity solution of viscous flow over a nonlinear porous shrinking sheet, variable magnetohydrodynamic effects and suction or injection. Combination of power series solution with the Pade approximants is used to handling boundary value condition on the semi-infinite domain of solution. The obtained results are compared with numerical results as well as other results in the literature. The results have good agreement with numerical and other results. It is found that velocity profiles and skins fractions are increased with increase of mass suction or magnetic effects. Copyright © 2011 Praise Worthy Prize S.r. l. - All rights reserved.
Maternal Distress - Every Unhappy Pregnant Woman is Unhappy in Her Own Way

Maternal distress varies in prevalence rates and displays various complaints, signs and symptoms. Additionally, multiple factors and causes contribute to both women’s vulnerability and manifestation of maternal distress. Worldwide maternal distress prevalence rates are up to 41% and the evidence of short and long-term adverse consequences of maternal distress indicate that preventive strategies are required. Maternal distress unchains a negative spiral of disturbed health and thus has a profound effect on public health. Evidence on the effectiveness and utility of selective and indicative preventive strategies for maternal distress shows that women’s individual predisposing factors and responses to maternal distress vary and individualization of findings from index or screening measures is required.
The asymmetric relationship between oil prices and activity in the EMU: Does the ECB monetary policy play a role?

Monetary policy is usually perceived as an important transmission channel in the negative relationship between oil prices and economic performance. It may also constitute a short-term explanation of the non-linearity in this relationship, since Central Bankers may be more sensitive to the potential inflationary threats entailed by high oil price increases than to small increases or decreases. In this paper, we use an extended Taylor rule to investigate the role of oil prices in the ECB monetary policy strategy. A contemporaneous reaction function is estimated using both a GMM framework and an Ordered Probit model, and several oil indicators are constructed and tested. The main results suggest that oil prices play a key role in the ECB interest-rate setting, since it appears as a relevant indicator of future inflation. However, the ECB seems to react asymmetrically: only oil price increases influence its decision setting, not oil prices decreases. Monetary policy may thus transmit and amplify the asymmetry in the relationship between oil prices and activity in the euro area. Further investigations suggest that a preference for price stability provides an important explanation of this asymmetric behaviour of the ECB.
Differences in the level of anaerobic and aerobic components of physical capacity in judoists at different age

Background The main aim of this study is answer to the question of which indices of body’s physical capacity differentiate professional judo from other athletes at different chronological age and sport experience. Material & Methods: The study encompassed 25 professional judoists at the age of senior, junior and cadet, numbered among the best athletes in Poland. The study included the measurements of indices of morphological body build, followed by the Wingate test and graded exercise test to exhaustion. Results: The study results revealed that the groups of judo contestants, varied in terms of chronological age and training experience, did not differ in their maximal aerobic capacity (V̊O2max). The groups of athletes differed significantly in terms of time of exercise over the TDMA threshold. Anaerobic capacity, determined by total work (TW) in the Wingate test, differed across the groups of judoists included in the study. The averaged levels of this index were highest in the senior group while the lowest values were found in the group of cadets. Level of phosphagenic capacity, expressed by the results of peak power (RPP), showed the highest levels in seniors. However, no significant intergroup differences were observed for the level of this index. Conclusions: 1. Many years of specific judo training contributes more to development of anaerobic than to aerobic functional capacity. 2. Faster initiation of the anaerobic energy transformations and higher amount of work done over the TDMA during graded exercise test in seniors compared to juniors might affect the course of the judo fight.
Developing a Framework for the Identification and Analysis of the Strategic Resources and Capabilities in Supply Chains

A fundamental challenge in the resource-based view (RBV) research is the identification of strategic resources and capabilities, whether they lie within a firm’s boundaries or in its supply chain. RBV theorists regarded the identification of the strategic resources as the first step in the analysis of the resources, followed by development/maintenance of the resources and finally their deployment. Some authors developed frameworks for the analysis of strategic resources within a firm’s boundaries. Many believe that a firm’s strategic resources and capabilities are not limited to the firm’s boundaries, extend its network. In this paper, we classify supply chain resources and capabilities into two categories: internal resources and capabilities (based on RBV) and relational ones (based on RV). We then develop a framework for the identification and analysis of these resources and capabilities and apply it to the supply chain resources and capabilities of two automobile manufacturing companies in Iran.
Breast volume calculation using a low-cost scanning system

Breast volume has been identified as a key metric in assessing patients for reconstructive surgery. Scanning systems have measured breast volume but they have tended to rely on expensive hardware and software. This paper discusses the development and assessment of an algorithm capable of calculating breast volume from 3D point data. A mannequin was scanned (using a custom, Kinect based scanning system) with one of two breast prostheses attached – 400g or 600 g. Each scan was assessed by three independent operators: seven anatomical points were identified representing the boundary of the breast region, which was then isolated. A Coons patch was used to represent the invisible chest surface lying below the breast tissue. A trapezium rule based approach was used to calculate the volume of the enclosed region between the breast and chest surfaces. Breast volume over-estimated by 130 cc with the 400 g prosthesis (30.3%) and 206 cc (33.3%) with the 600 g prosthesis, suggesting positive proportional bias. Average reliability was ± 59.7 cc for the 400 g prosthesis (13.9%) and ± 34.7 cc for the 600 g prosthesis (5.6%) – approaching the levels required to differentiate between implant sizes (25 -50 cc). Future work will focus on refining the hardware and software of this scanning system – minimising proportional basis and maximising reliability of measurement.
Patterns in invertebrate drift from an Alpine karst aquifer over a one year period

Patterns in invertebrate drift in the alpine karst Lipnik spring (Julian Alps, Slovenia) were investigated over a one year period. Monthly samplings of one permanent and two temporary springs, and one sampling of a spring brook benthos, yielded 23 Copepoda and Ostracoda species. More species (12) were found in the permanent than in the temporary springs (8 and 7), Elaphoidella phreatica (Sars, 1862) being the most frequent in all of them. No correlation was observed between precipitation and drift densities or the numbers of species in the permanent spring. In the temporary springs there were correlations between precipitation and the Shannon diversity index, equitability and changes in community composition. Conductivity of the water was the only physical parameter in the springs that correlated with precipitation. Species accumulation curves reached the asymptotes in all the springs but not for benthos. Dinamika plavljenja vodnih nevretencarjev iz alpskega kraskega vodonosnika v obdobju enega leta V alpskem kraskem izviru Lipnik (Julijske Alpe, Slovenija) smo preiskovali dinamiko plavja vodnih nevretencarjev v obdobju enega leta. V mesecnih vzorcenjih enega stalnega in dveh obcasnih izvirov ter enkratnim vzorcenjem bentosa potoka Lipnik smo zbrali 23 vrst ceponožcev in dvoklopnikov. Rezultati raziskave so razkrili, da je bilo vec vrst zbranih iz stalnega (12) kot iz obcasnih izvirov (8 in 7). V vseh je stevilcno prevladovala vrsta Elaphoidella phreatica (Sars, 1862). V nobenem izviru ni bilo povezave med padavinami in gostoto plavja ter stevilom vrst. Povezava pa se je pojavila v obcasnih izvirih med padavinami in Shannonovim indeksom in ravnovesjem ter spremembo v sestavi združbe. Edina fizikalna lastnost vode v izvirih, ki je bila v povezavi s padavinami, je bila prevodnost. Krivulje vrstne akumulacije so dosegle asimptoto pri vseh izvirih, v bentosu potoka pa ne.
Do Unobserved Components Models Forecast Inflation in Russia?

I apply the model with unobserved components and stochastic volatility (UC-SV) to forecast the Russian consumer price index. I extend the model which was previously suggested as a model for inflation forecasting in the USA to take into account a possible difference in model parameters and seasonal factor. Comparison of the out-of-sample forecasting performance of the linear AR model and the UC-SV model by mean squared error of prediction shows better results for the latter model. Relatively small absolute value of the standard error of the forecasts calculated by the UC-SV model makes it a reasonable candidate for a real time forecasting method for the Russian CPI.
Lumley decomposition of turbulent boundary layer at high Reynolds numbers

The decomposition proposed by Lumley in 1966 is applied to a high Reynolds number turbulent boundary layer. The experimental database was created by a hot-wire rake of 143 probes in the Laboratoire de Mecanique de Lille wind tunnel. The Reynolds numbers based on momentum thickness (Reθ) are 9800 and 19 100. Three-dimensional decomposition is performed, namely, proper orthogonal decomposition (POD) in the inhomogeneous and bounded wall-normal direction, Fourier decomposition in the homogeneous spanwise direction, and Fourier decomposition in time. The first POD modes in both cases carry nearly 50% of turbulence kinetic energy when the energy is integrated over Fourier dimensions. The eigenspectra always peak near zero frequency and most of the large scale, energy carrying features are found at the low end of the spectra. The spanwise Fourier mode which has the largest amount of energy is the first spanwise mode and its symmetrical pair. Pre-multiplied eigenspectra have only one distinct peak and it matches.