bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and control of permanent magnet assisted synchronous reluctance motor with copper loss minimization using MTPA
Authors: Sriprang Songklod , Nahid-Mobarakeh Babak , Takorabet Noureddine , Pierfederici Serge , Kumam Poom , Bizon Nicu , Taghavi Nesser , Vahedi Abolfazl , Mungporn Pongsiri , Thounthong Phatiphat 
Published: May 2020

Abstract
It is necessary to find the suitable d - and q -axis reference currents to control PMA-SynRM motors with high efficiency. This paper presents the maximum torque per ampere (MTPA) to minimize the copper losses of the system and utilizes the field weakening control to operate above the rated speed of the PMA-SynRM. The copper losses equation and electromagnetic torque are used to optimize the d - and q -axis current references. A small-scale 1 kW prototype PMA-SynRM was designed and manufactured to test and examine the proposed control in the laboratory. The proposed algorithm was digitally carried out using the MicroLab Box dSPACE. The simulation results show that the copper losses of the machine with the MTPA algorithm are lower than those without the MTPA algorithm. The PMA-SynRM operates above the base speed of ~ 70 % in the constant power region by mean of field weakening control.
Dynamics of the Media System in Post-Soviet Turkmenistan
Authors: Yazliyeva Oguljamal 
Published: May 2020

Abstract
This article explores the media environment in Turkmenistan from a comparative perspective, analyzing periods when this Central Asian nation was ruled by President Saparmurat Niyazov and his successor Gurbanguly Berdimuhamedov. It examines critical trends of the media system’s development since the early 1990s and onward based on the political culture established under the ruling of these two state leaders. The paper argues that media plays a primary role in building a cult of personality of Saparmurat Niyazov, which was further implemented and developed by the administration of Gurbanguly Berdimuhamedov. A case study of the Turkmen TV channels, in particular, is focused on styles of presenting materials, the language and propaganda techniques (clichés, slogans, labels), used to promote the cult of personality. The article analyzes the behaviors of the constructors and supporters of the cult of personality using the concept of the political culture in authoritarianism. Thus, the paper outlines that with some moderate dynamics in the media system, President Gurbanguly Berdimuhamedov continues to strictly control media – the policies established by his predecessor, who used methods of total control and censorship of all media outlets in the country.
Assessment of body composition and nutritional risks in young ballet dancers – the bioelectrical impedance analysis
Authors: Gammone Maria Alessandra , D’Orazio Nicolantonio 
Published: May 2020

Abstract

Background
Young ballet dancers are at risk of health issues associated with altered nutritional status and of relative energy deficiency in sport compared to the general population.

Aim
To evaluate the nutritional status and body composition in ballet dancers.

Materials and methods
The study group consisted of 40 young ballet dancers (mean age 19.97 years). Height and weight were measured and body mass index was calculated in all subjects (mean BMI value 19.79 kg/m2, SD: 2.051). Body composition was estimated using the bioelectrical impedance method.

Results
The dancers’ fat-free mass was 47.33 kg (SD: 5.064) and, on the average, body fat represented the 15.92% (SD: 16.91) of their body weight.

Conclusions
Ballet dancers, who usually show significantly lower BMI values compared to the general population, also displayed body fat values under the suggested range. Some screening for altered nutritional status should be performed. In addition, education programs should be recommended in young ballet dancers, in order to inform about energy and nutrition requirements for health and training and to prevent malnutrition-related problems.
Applying Protective Coating on the Turbine Engine Turbine Blades by Means of Plasma Spraying
Authors: Ułanowicz Leszek , Dudziński Andrzej , Szczepaniak Paweł , Nowakowski Mirosław 
Published: May 2020

Abstract
The tendency to increase the temperature of gases and the desire to extend the service life forces the use of a protective coating on the blade. The publication presents the technology of applying a heat-resistant protective coating onto the jet engine turbine blade by means of plasma thermal spraying, taking into account the process of aluminizing and heat treatment after aluminizing. The paper presents the results of work on the possibilities of shaping the thickness of the protective coating on the blade by changing the parameters of the spraying process, such as spraying distance, amount of hydrogen, amount of argon and the number of torch passes.
MiR-155 and MiR-665 role as potential non-invasive biomarkers for hepatocellular carcinoma in Egyptian patients with chronic hepatitis C virus infection
Authors: Mohamed Amal Ahmed , Omar Abdellah Abosrie Ali , EL-Awady Rehab R. , Hassan Sally Mohamed Aboelsayed , Eitah Waleed Mohamed Soliman , Ahmed Rehab , khater Amir , Tantawi Omnia Mohamed Saad , Mohamed Ahmed Abdelhafeez 
Published: May 2020

Abstract

Background and Objectives
Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer associated death globally. Serum micro RNAs are full of potential as noninvasive biomarkers. Here, we aim to assess the performance of serum MicroRNA-155 and MicroRNA-665 as diagnostic biomarker for HCC comparing to AFP.

Methods
Serum samples were collected from 200 subjects (40 healthy control, 80 chronic hepatitis C patients with cirrhosis and without HCC (LC) and 80 HCC patients currently infected by hepatitis C infection and didn’t start the treatment). The HCC patients didn’t include alcoholic liver disease, nonalcoholic fatty liver disease nor autoimmune liver disease. MicroRNA-155 and MicroRNA-665 expression were measured by real-time quantitative PCR (RT-qPCR), while AFP level was assessed by ELISA method.

Results
Both miR-155 and miR-665 were significantly elevated in HCC group as compared to both control and LC groups. The comparison between LC and HCC patients revealed that the serum level of miR-155 was a significant increase in HCC patients compared to LC patients; however, the serum level of miR-665 didn’t show any significant difference between the same two groups. MiR-665 expression level showed a direct correlation with tumor size in HCC patients.

Conclusions
Using measurement against AFP level in serum, miR-665 is considered a promising serum biomarker for the diagnosis of HCC patients among the LC patients without HCC. MiR-155 didn’t provide a better performance than serum AFP as a diagnostic biomarker among the same group. MiR-665 may serve as a good indicator for HCC prognosis.
A novel, rapid, and simple PMA-qPCR method for detection and counting of viable Brucella organisms
Authors: Zhang Shi-Jun , Wang Lu-Lu , Lu Shi-Ying , Hu Pan , Li Yan-Song , Zhang Ying , Chang Heng-Zhen , Zhai Fei-Fei , Liu Zeng-Shan , Li Zhao-Hui , Ren Hong-Lin 
Published: May 2020

Abstract

Introduction
The plate counting method widely used at present to discern viable from non-viable Brucella in the host or cell is time-consuming and laborious. Therefore, it is necessary to establish a rapid, simple method for detecting and counting viable Brucella organisms.

Material and Methods
Using propidium monoazide (PMA) to inhibit amplification of DNA from dead Brucella, a novel, rapid PMA-quantitative PCR (PMA-qPCR) detection method for counting viable Brucella was established. The standard recombinant plasmid with the target BCSP31 gene fragment inserted was constructed for drawing a standard curve. The reaction conditions were optimised, and the sensitivity, specificity, and repeatability were analysed.

Results
The optimal exposure time and working concentration of PMA were 10 min and 15 μg/mL, respectively. The correlation coefficient (R2) of the standard curve was 0.999. The sensitivity of the method was 103 CFU/mL, moreover, its specificity and repeatability also met the requirements. The concentration of B. suis measured by the PMA-qPCR did not differ significantly from that measured by the plate counting method, and the concentrations of viable bacteria in infected cells determined by the two methods were of the same order of magnitude.

Conclusion
In this study, a rapid and simple PMA-qPCR counting method for viable Brucella was established, which will facilitate related research.
Standards of Investigation Under Article 2 of the European Convention on Human Rights and Investigations of Incidents of Historic Significance
Authors: Binienda Maria Szonert 
Published: May 2020

Abstract
In search of international remedies for the investigation of the Tu-154M airplane crash of April 10, 2010, in Smolensk, Russia, standards of effective investigation under Article 2 of the European Convention on Human Rights are examined. Cases of airplane crashes and terrorist attacks are analyzed. Next, investigations of major international incidents of historic significance are examined. The case of UN Secretary General D. Hammarskjold killed in 1961 airplane crash is analyzed. Also, the investigation conducted by the International Commission of Inquiry for Lebanon on the assassination of Prime Minister Hariri is examined. Based on the above, recommendations are made for the most effective international investigation of the Smolensk crash.
The Requirements Deriving from the Procedural Aspect of Art. 2 of the European Convention of Human Rightsin the Context of Polish and Russian Investigation Regarding the Air Crash of Polish Air Force Tu-154 in Smolensk
Authors: Czepek Jakub 
Published: May 2020

Abstract
The main aim of this analysis is the synthetic reconstruction of the standards of European Court of Human Rights concerning the procedural aspect of the right to life, and particularly the obligation of conducting an effective investigation in the context of the Polish Air Force Tu-154 air crash in Smolensk on 10th April 2010.
The right to life in the system of the European Convention of Human Rights has a particular character. It derives mostly from its paramount importance. Due to the character of the sphere guaranteed by the right to life, the European Court of Human Rights notices the need of protecting it, both in material and procedural aspect. This is also the reason why article 2 of the ECHR is backed up by the wide variety of positive obligations.
The standards of article 2 of the ECHR and state’s positive obligations in this respect are fully applicable in relation to the air crash of the presidential Tu-154. State’s obligations focus on both material and procedural aspect of incident causing death. The air crash of Tu-154 concerns particularly the obligation to conduct adequate and effective official investigation. This obligation concerns both Polish and Russian authorities.
The main aim of this research is to analyse which obligations are applicable in respect of this particular air crash.
AntArr – Etna Low Frequency Antenna Array
Authors: Tuccari G. , Wunderlich M. , Dornbusch S. , Tuccari G. G. 
Published: May 2020

Abstract
A project called AntArr as a new application of the DBBC3 (Digital Base Band Converter, 3rd generation) is under development. A group of antennas operating at low frequency, in the range from 10 MHz up to 1500 MHz, are phased up for VLBI, pulsar and more recently for FRB observations. Part of the scientific programme is also dedicated to SETI activities in piggy-back mode. Dedicated elements can even be added to reach still lower frequencies to observe the range down to kHz frequencies. The DBBC3 manages the array operations in a selected portion of the band and the main characteristic is to synthesize a beam with an innovative approach. The final product of the array is a single station standard VLBI data stream for correlation with other antennas, or a synthesized beam for single dish observations. A number of antennas and array prototypes are under test at a location on the Etna volcano slope, with the aim to form a complete radio telescope of up to 1024 elements in 2020 and beyond. This project completes the lower part of the frequency spectrum covered in VLBI by the BRAND EVN project. The project AntArr is hosted and financed by HAT-Lab Ltd., which is the manufacturer of the DBBC family backends.
Information System Cyber Threats and Telecommunications Engineering Courses
Authors: Sneps-Sneppe M. , Namiot D. , Pauliks R. 
Published: May 2020

Abstract
The article discusses the issue of training of telecommunications engineers. The architecture of telecommunications solutions is changing very quickly. Obviously, training programmes must also change. Cybersecurity issues are one of the main drivers of change in telecommunications solutions and, therefore, training programmes. They have become the main issues in all processes related to digital transformation. At the same time, it is clear that the development of education in telecommunications clearly lags behind modern requirements. Such issues come to the fore in relation to the development of digital economy programmes. Cyber security issues for military telecommunications solutions are discussed separately.
Electric Consumption Assessment using Smart Meter Data and KPI Methodology
Authors: Mutule A. , Zikmanis I. , Dumitrescu A.-M. 
Published: May 2020

Abstract
In the modern world, many cities make use of state-of-the-art technologies for a diversity of applications. A field with very specific needs is the electric power system that deals with both large entities that govern themselves (grid operators) and the citizens. For both and all actors in between, there is an increased need for information. Steps to provide these data are always taken and several initiatives are ongoing across the world to equip residential users with last generation smart meters. However, a full deployment is still not possible. Considering this aspect, the authors propose KPIs for the specific situation when some information is available from the meters and other sources, but some is not. The study case is based on a residential area occupied mainly by university students and after an extensive measurement campaign the results have been studied and analysis methods proposed.
The Effect of Probiotics on T-2 Mycotoxin Induced Apoptosis in Chicken Liver Tissue
Authors: Hussar Piret , Blagoevska Katerina , Järveots Tõnu , Dovenska Monika , Bozinovski Dimitar , Popovska-Percinic Florina 
Published: May 2020

Abstract
In recent years many researchers have described the reduced mycotoxin toxicity caused by probiotic bacteria. Since reduction under gastrointestinal conditions of the bioavailability of mycotoxins by probiotics is not fully investigated in birds, the aim of the study was to determine the effect of probiotic on T-2 mycotoxicosis induced apoptosis in broiler’s liver. For the study, twelve 1-days old broilers were divided equally into T-2 toxin (T2) and probiotic with T-2 (P+T2) groups. From the first experimental day, probiotic Enterococcus faecium DSM 7134 was administered in drinking water to P+T2 group. From the fourth day, T-2 toxin was given for three consecutive days to T2 toxin group. At 8th experimental day chicken were sacrificed, liver was fixed in buffered 10% formalin, embedded into paraffin, slices 5 μm in thickness were cut followed by immunohistochemical staining with polyclonal primary antibodies p21 and p53 (Abcam, UK) according to the manufacturers’ guidelines (IHC kit, Abcam, UK). Blood samples were taken by cardiac puncture to measure liver enzymes. Immunohistochemical staining revealed strong expression of p53 and p21 antibodies in hepatocytes nuclei as well as around blood vessels in T-2 toxin group’s chicken liver tissue. Staining by both antibodies was less intensive in P+T2 group. Enzyme analysis showed significantly increased (p<0.05) blood aspartate transaminase and alanine transaminase concentrations by 33.87% and 68.03% respectfully in T2 toxin group, while enzyme concentrations were decreased in P+T2 group. The obtained results showed reduced features of liver apoptosis in treatment with probiotic bacteria.
Changes in the geographical distribution of youth poverty and social exclusion in EU member countries between 2008 and 2017
Authors: Šoltés Erik , Vojtková Mária , Šoltésová Tatiana 
Published: May 2020

Abstract
With respect to the fulfillment of the objectives of the Europe 2020 strategy, the threat of poverty and social exclusion has not been sufficiently reduced in the European Union (EU) over the past decade, and large regional disparities persist. Young people are the most affected by the problems of income poverty, material deprivation and labour market exclusion, which are the three dimensions of poverty and social exclusion. In this article, we focus on comparing the EU countries in terms of the three listed dimensions, while revealing similarities and differences in the incidence and severity of these social phenomena among youth. In addition to measuring dimensions by the currently used AROPE (at risk of poverty or social exclusion) rate, we also use a larger spectrum of relevant indicators for a more comprehensive analysis. While the AROPE aggregate indicator uses the same methodology for the population of young people as for the whole population, our approach includes indicators that are specific to young people. We assume that all dimensions affect each other, so we apply multidimensional statistical methods such as principal components and cluster analysis to analyse them. These methods have revealed that some dimensions affect poverty and social exclusion to a greater extent and others to a lesser extent than might appear to be the case, based on AROPE’s partial rates. Moreover, we present quantified integral indicators that together with the results of the multivariate methods, provide a rather complex picture concerning the geographical distribution of poverty and social exclusion, as well as their dimensions in the EU, for the population of persons aged 18–24 years in 2008 and 2017.
Determinants of Building Image and Reputation of University Towards Its Stakeholders
Authors: Gołata Krzysztof , Sojkin Bogdan 
Published: May 2020

Abstract
The aim of the article is describinig the role and place of image and reputation in a university and research institution in the process of competing on the education market. The article presents current views on the scope of these concepts as well as the mutual relations between the image and reputation in business entities. The fundamental importance of university relations with internal and external stakeholders in shaping both image and reputation was pointed out. The second part presents a set of image and reputation determinants in the case of a university. In addition, the role and place of the university rector was emphasized in building the image and reputation of the parent university in the light of Act 2.0.
Structural and optical properties of ZnO thin film prepared by sol-gel spin coating
Authors: Balakrishnan G , Sinha Vivek , Peethala Yogesh Palai , Kumar Manoj , Nimal R.J. Golden Renjith , Hameed Hussain J , Batoo Khalid Mujasam , Raslan Emad H. 
Published: May 2020

Abstract
Zinc oxide (ZnO) thin films were deposited on Si (1 0 0) and glass substrates by sol-gel spin coating technique. Zinc acetate dihydrate, monoethanolamine and isopropanol were used as the sources for precursor solution and the resulting gel was used for the preparation of ZnO thin films. The films were annealed at different temperatures (100 °C to 500 °C) and the effect of annealing on the structural and optical properties was investigated. X-ray diffraction (XRD) and UV-Vis spectroscopy were used for the analysis of the films. The XRD results indicated the polycrystalline hexagonal structure of the ZnO films with (0 0 2) orientation. The optical properties of the films were studied using UV-Vis spectrophotometer in the wavelength range of 190 – 1100 nm. The optical characterization of the ZnO thin films showed the high transmittance of ~90 % for the films annealed at 400 °C. The films showed the absorbance ~360 – 390 nm and bandgap values of 3.40 – 3.10 eV, depending on the annealing temperature of the films.
Microstructure and mechanical properties of Sn-9Zn-xAl and Sn-9Zn-xCu lead-free solder alloys
Authors: Yavuzer B. , Özyürek D. , Tunçay T. 
Published: May 2020

Abstract
This study investigates microstructures and mechanical properties of the alloys obtained by adding Cu (0.7 % and 0.9 %) and Al (0.7 % and 0.9 %) to lead-free Sn-9Zn eutectic soldering alloy produced by investment casting method. The results show that Cu5Zn8 phase has formed in the structure of Cu added alloys and the Al2O3 phase has formed due to addition of Al. It was found that small and round-shaped Al2O3 phase increased the tensile strength of the new alloy compared to the eutectic alloy. In addition, it was observed that the microhardness of Cu added alloys was lower than that of Sn-9Zn eutectic alloy, but the microhardness of alloys containing Al was higher compared to the other eutectic Sn-9Zn alloy.
Fluka simulation of PGNAA system for determining heavy metal pollution in the soil sample
Authors: Zhang Can , Yang Jianbo , Li Rui , Qiao Yujie , Zhang Xu , Xu Jie 
Published: May 2020

Abstract
This study presented a self-designed prompt gamma neutron activation analysis (PGNAA) model and used Fluka simulation to simulate the heavy metals (Mn, Cu, Hg, Ni, Cr, Pb) in soil samples. The relationship between the prompt γ -ray yield of each heavy metal and soil thickness, content of heavy metals in the soil, and source distance was obtained. Simulation results show that the prompt γ -ray yield of each heavy metal increases with the increase in soil thickness and reaches saturation at 18 cm. The greater the proportion of heavy metals in the soil, the greater the prompt γ -ray yield. The highest content is approximately 3%, and the change in distance between the neutron source and soil sample does not affect the prompt γ -ray yield of heavy metals.
Multi-Criteria Optimisation of Multi-Stage Positional Game of Vessels
Authors: Lisowski Józef 
Published: May 2020

Abstract
The paper presents a mathematical model of a positional game of the safe control of a vessel in collision situations at sea, containing a description of control, state variables and state constraints as well as sets of acceptable ship strategies, as a multi-criteria optimisation task. The three possible tasks of multi-criteria optimisation were formulated in the form of non-cooperative and cooperative multi-stage positional games as well as optimal non-game controls. The multi-criteria control algorithms corresponding to these tasks were subjected to computer simulation in Matlab/Simulink software based on the example of the real navigational situation of the passing of one’s own vessel with eighteen objects encountered in the North Sea.
Experimental Study of Dam-Break-Like Tsunami Bore Impact Mechanism on a Container Model
Authors: Chen Cheng , Chen Jun , Lin Peng , Chen Chiwei , Chen Haozhe 
Published: May 2020

Abstract
Tsunami disasters have frequently occurred in recent years. More and more researchers are focusing on this topic. To investi-gate the tsunami bore impact mechanism on a container model, a multi-functional slope-changing tsunami flume is built in this study. To simulate a tsunami bore, a dam-break wave was generated by a free-falling gate in a reservoir. A needle water level gauge and a high-speed camera were used to measure the tsunami wave heights and velocities for different storage water levels in the test flume, and the corresponding Froude numbers of tsunami waves were also calculated. The factors af-fecting the movement distance of the tsunami wave impacting the container model are explored in this experiment, and the results show that the movement distance is positively correlated with the storage water level, and negatively correlated with the container density and the coast slope.