bluuebunny/crossref_metadata_2025_split huggingface dataset:
‘Knowledge Workers’ in the Baltic Sea Region: Comparative Assessment of Innovative Performance of the Countries in the Macro-Region
Authors: Kirch Aksel 
Published: June 2018

AbstractThe article studies the problems of human resources stemming from increased mobility, and the emergence of new aspects of migration processes. A comparative analysis of the connection between academic development in the context of university (and the science system) and the process of labour migration taking place in Poland, Latvia, Lithuania and Estonia was carried out. The article examines the limits of the model through European territorial migration process and concludes that the huge migration of high-skilled labour (called the “knowledge workers”) has had a very negative impact on the innovative and academic potential of Poland, Lithuania, Latvia and a negative impact in Estonia. In the final section, the article examines increase in the requirements for competence in the Baltic Sea macroregion of the European Union and Estonia’s university reform of 2013-2016 as an illustrative experiment to (un)resolved problems. The first results of the reform in higher education indicated that it was ineffective-for students, the good ideas of the reform proved to be a lost experiment and the mobility of knowledge workers, as the future academic resource in homeland, turned from Estonia to larger Europe, especially to Finland and the UK.
Cardiovascular assessment by imaging photoplethysmography – a review
Authors: Zaunseder Sebastian , Trumpp Alexander , Wedekind Daniel , Malberg Hagen 
Published: June 2018

AbstractOver the last few years, the contactless acquisition of cardiovascular parameters using cameras has gained immense attention. The technique provides an optical means to acquire cardiovascular information in a very convenient way. This review provides an overview on the technique’s background and current realizations. Besides giving detailed information on the most widespread application of the technique, namely the contactless acquisition of heart rate, we outline further concepts and we critically discuss the current state.
First record of a rare species, Polyasterias problematica (Prasinophyceae), in Balsfjord, northern Norway
Authors: Kubiszyn Anna M. , Svensen Camilla 
Published: June 2018

Abstract

Polyasterias problematica is a poorly investigated prasinophyte species, practically known only from a few, primarily historical studies. Fragmentary information on the species indicates that P. problematica is mainly distributed in the euphotic zone of the Canadian and Russian Arctic, Atlantic Canada, the mid-Atlantic and some European seas. Here, we present the first record of this species in the Balsfjord waters, northern Norway. A detailed morphological description, with line drawings and microscopy-based photographs, as well as information on its up-to-date geographical distribution and possible explanations for its extraordinary scarcity are provided.
Densification Mechanism, Elastic-Plastic Deformations and Stress-Strain Relations of Compacted Metal-Ceramic Powder Mixtures (Review)
Authors: Popescu Ileana Nicoleta , Vidu Ruxandra 
Published: June 2018

Abstract
The basic purpose of compaction is to obtain a green compact with sufficient strength to withstand further handling operations. The strength of green compact is influenced by the characteristics of the powders (apparent density, particle size and shape, internal pores etc.), the processing parameters (applied force, pressing type, and temperature) and testing conditions (strain rate etc.) Successful powder cold compaction is determined by the densification and structural transformations of powders (metallic powders, ceramic powders and metal-ceramic powder mixtures) during the compaction stages. In this paper, for understanding the factors that determine a required strength of compacted metal-ceramic powder mixtures, we present the densification mechanisms of different mixtures according to densification theories of compaction, the elastic-plastic deformations of mixture powders, the stressstrain relations and the relaxation behavior of compacted metal-ceramic composite parts and the particularities of each of them.
Study on Effective Elastic Properties of CaMnO3
Authors: Thongsri Prapawan 
Published: June 2018

Abstract
Calcium manganese oxide (CaMnO3) polycrystalline was synthesized by solid state reaction (SSR) and hot-press (HP) methods. The powder of CaCO3 and MnO2 were mixed by ball milling then calcined at 850°C for 10 h and hotpressing at 850 °C for 1 h to obtain the CaMnO3 samples. The crystallography of the samples was analyzed by the X-ray diffraction (XRD). The microstructures of the samples were observed by scanning electron microscope (SEM). It was found that, the sintering process influence the crystalline perfection and have a direct impact on the mechanical properties of CaMnO3 and their aging behavior. The values of the effective elastic modulus was 6 GPa and Flexural strength was 0.417 MPa of CaMnO3 were found to be in the range of corresponding values for high performance and possibility fabricated n-type thermoelectric leg.
Displacement States for Isotropic Plates
Authors: Popa Carmen , Anghelina Violeta , Munteanu Octavian 
Published: June 2018

Abstract
In this paper the deformation state of a circular and isotropic plate is analyzed, using as methods of comparison the analytical, the finite element and the experimental element methods. In the finite element method, the plate is analyzed by several programmes, as well as assembled with the respective container.
Model construction of Niemann-Pick type C disease in zebrafish
Authors: Lin Yusheng , Cai Xiaolian , Wang Guiping , Ouyang Gang , Cao Hong 
Published: June 2018

Abstract
Niemann-Pick type C disease (NPC) is a rare human disease, with limited effective treatment options. Most cases of NPC disease are associated with inactivating mutations of the NPC1 gene. However, cellular and molecular mechanisms responsible for the NPC1 pathogenesis remain poorly defined. This is partly due to the lack of a suitable animal model to monitor the disease progression. In this study, we used CRISPR to construct an NPC1
−/− zebrafish model, which faithfully reproduced the cardinal pathological features of this disease. In contrast to the wild type (WT), the deletion of NPC1 alone caused significant hepatosplenomegaly, ataxia, Purkinje cell death, increased lipid storage, infertility and reduced body length and life span. Most of the NPC1
−/− zebrafish died within the first month post fertilization, while the remaining specimens developed slower than the WT and died before reaching 8 months of age. Filipin-stained hepatocytes of the NPC1
−/− zebrafish were clear, indicating abnormal accumulation of unesterified cholesterol. Lipid profiling showed a significant difference between NPC1
−/− and WT zebrafish. An obvious accumulation of seven sphingolipids was detected in livers of NPC1
−/− zebrafish. In summary, our results provide a valuable model system that could identify promising therapeutic targets and treatments for the NPC disease.
Socioeconomic status is a predictor of neurocognitive performance of early female adolescents
Authors: Madhushanthi H. J. , Wimalasekera Savithri W. , Goonewardena C. Sampatha E. , Amarasekara A. A. Thamara D. , Lenora Janaka 
Published: June 2018

Abstract

Objective
Previous studies have shown that high socioeconomic status (SES) is significantly associated with inhibitory control, working memory, verbal comprehension and IQ. However, in the Asian setting, with its prevailing poverty, information about the influence of SES on cognitive development of female adolescents is limited. This study was aimed to investigate the association between SES and neurocognitive performance of early female adolescents in Sri Lanka.

Methods
Female adolescents aged 11–14 years (n = 200) of low and middle SES were studied to assess neurocognitive function. After obtaining baseline data, eight subtests of the Wechsler Intelligence Scale for Children (WISC – IV), Test Of Nonverbal Intelligence (TONI-3) and two computer-based executive function tests (inhibition and visuo-spatial working memory) were administered to assess neurocognitive measures of the above adolescents. The results were compiled into a data base and analyzed using SPSS version 20 statistical software.

Results
Higher SES was associated with higher performance in all neurocognitive tests. Low SES adolescents obtained significantly poor test scores for executive function test (inhibitory control: p < 0.0001) and for WISC [verbal comprehension index (VCI): p < 0.0001), working memory index (WMI): p < 0.0001 and estimated full scale IQ (EFSIQ): p < 0.0001)] when compared with middle SES adolescents. Maternal education alone significantly predicts VCI and EFSIQ than the combined influence of parental education, occupation and income. Psychosocial adversities of adolescents were inversely correlated with VCI (r = −0.30; p < 0.001) and EFSIQ (r = −0.20; p < 0.001) of WISC and mathematics performance (r = −0.34; p < 0.001) at examination in school.

Conclusion
Findings of the study revealed the importance of upliftment of SES of the society to improve the cognitive and academic outcomes of low SES individuals.
Maximal length elements of excess zero in finite Coxeter groups
Authors: Hart Sarah B. , Rowley Peter J. 
Published: June 2018

AbstractIn this paper we prove that forWa finite Coxeter group andCa conjugacy class ofW, there is always an element ofCof maximal length inCwhich has excess zero. An elementw∈W{w\in W}has excess zero if there exist elementsσ,τ∈W{\sigma,\tau\in W}such thatσ2=τ2=1,w=σ⁢τ{\sigma^{2}=\tau^{2}=1,w=\sigma\tau}andℓ⁢(w)=ℓ⁢(σ)+ℓ⁢(τ){\ell(w)=\ell(\sigma)+\ell(\tau)},ℓ{\ell}being the length function onW.
Performance Analysis of Homodyne-Based FSO System Using Various Optical Amplifiers
Authors: Sahota Jasjot Kaur , Dhawan Divya 
Published: June 2018

AbstractA detailed performance analysis of homodyne-based coherent detection in Free-space optics (FSO) with various optical amplifiers is presented in this paper. Using homodyne detection in FSO system, the effect of scintillation is mitigated. To further enhance the performance of FSO system, various optical amplifiers such as erbium-doped fibre amplifier, semiconductor optical amplifier, gain-controlled amplifier and black box model of amplifier can be employed in the system. Improvement in the system can be validated in terms of BER, Q-factor and eye diagram.
Performance Enhancement of HAP-Based Relaying M-PPM FSO System Using Spatial Diversity and Heterodyne Detection Receiver
Authors: Nguyen Nga T.T. , Vu Minh Q. , Pham Hien T.T. , Dang Bac H. , Ngoc T. Dang 
Published: June 2018

Abstract
In this paper, we investigate the performance of a high-altitude platform (HAP)-based relaying free-space optical communication (FSO) system, where HAP plays a role as a relay node that employs detect-and-forward relaying scheme to connect between two ground stations (GSs).

M

$M$

-ary pulse-position modulation (PPM), spatial diversity, and heterodyne detection receiver are used to improve the system’s performance. Instead of using multiple-input multiple-output (MIMO), which makes the HAP complex, multiple-input single-output (MISO) is applied to the uplink while single-input multiple-output (SIMO) is utilized for the downlink. Consequently, the HAP only needs a couple of transmit and receive aperture. The expression for the bit error rate (BER) of the proposed FSO system is derived considering the impact of atmospheric attenuation and turbulence. The achievable BER with low values has proved the feasibility of our proposed system. In addition, the advantages of using

M

$M$

-PPM, spatial diversity, and heterodyne detection are demonstrated in terms of the power gain and the geometric distance between two GSs. Other useful information for system design regarding the required transmitted power, the number of transmit/receive apertures, the modulation level, and the local oscillator power is also provided in this paper.
A Novel Survivability Technique: DHMBC for WDM Optical Networks
Authors: Saini Himanshi , Garg Amit Kumar 
Published: June 2018

AbstractFailures and malicious attacks in high-speed optical networks lead to huge data as well as revenue loss. In this paper, a survivability technique called Dynamic and Hybrid with Multiple Backup selection Criteria technique for high-speed networks has been proposed with the objective to minimize network resource utilization, blocking probability, End-to-End delay and maximize throughput. The proposed model decides the type of backup provisioning technique based on the location of failure in the network. Protection has been provisioned to selective links near to destination node and other links are restored. The simulation results indicate that proposed survivability technique is efficient as compared to conventional techniques in terms of various network performance measuring parameters. This technique inherits merits of protection as well as restoration. It can be practically implemented to provide resilience in future high-speed networks.
Influence of the adhesive type and metal substrate on adhesion of bonded joints after salt spray test
Authors: Machalická Klara , Pokorný P. , Vokáč M. 
Published: June 2018

Abstract
This article was focused on the evaluation of neutral salt spray test effect (according to ISO 9124), procedure E4, on mechanical properties of load-bearing adhesive joints. The study also comprises the influence of substrate material (mild steel, aluminum alloys) and substrate surface roughness (verified by optical confocal microscopy). The experimental program contained acrylate-based adhesive and hybrid silicone polyurethane based adhesive which were applied in double lap joints loaded by shear.
EIS and corrosion behaviour of plasma sprayed layers of Al and AlCr6Fe2 on AZ91
Authors: Kubatík F. T. , Stoulil J. , Lukáč F. , Stehlíková K. , Slepička P. 
Published: June 2018

Abstract
This work presents the preparation of coatings of aluminium and AlCr6Fe2 alloy on magnesium alloy AZ91 with metallurgical bonding. Coatings were prepared by plasma spraying system WSP®-H 500. This metallurgical bond (sub-layer) is formed by an eutectic structure consisting of the intermetallic phase Mg17Al12 and the solid solution of magnesium and aluminium. In this work, the layers were studied using electrochemical impedance spectroscopy (EIS). It was shown that there is a several fold increase of the polarization resistance (Rcν) of plasma-sprayed coatings of aluminium and AlCr6Fe2 alloy, compared with uncoated AZ91 in borate buffer with pH 9.1.
Effect of combined surface treatment on quality and electrochemical corrosion properties of manganese phosphate on hsla steel domex 700
Authors: Borko Kamil , Pastorek F. , Neslušan Jacková M. , Fintová S. , Hadzima B. 
Published: June 2018

Abstract
The actual industrial trend is focused on weight reduction of constructions while preserving strength properties. For this purpose, conventional steel are replaced by high strength steels.. The aim of this study was to evaluate the effects of mechanical surface pre-treatment on corrosion resistance of high strength low alloy steel Domex 700 before and after surface treatment by manganese phosphating. Tested environment was 0,1M NaCl solution. Evaluation of mechanical pre-treatment and phosphating effects on corrosion resistance was realized by electrochemical measurements: potentiodynamic polarization measurements (Tafel analysis) and electrochemical impedance spectroscopy (equivalent circuits). From resulsts it is possible to conclude, that creation of manganese phosphate layer on ground and shot peened steel surface significantly increases the corrosion resistance of Domex 700 steel.
Influence of soil microorganisms on metal corrosion of underground pipelines
Authors: Polutrenko M. , Maruschak P. , Tymoshenko A. , Sorochak A. 
Published: June 2018

Abstract
There have been revealed and summarized the regularities in biocorrosion of steel 17G1S-U, which is traditionally used for manufacturing oil and gas mains. The basic regularities of biocorrosion processes in the 17G1S-U pipe steel under the influence of SRB Desulfovibrio Sp. strains Kyiv-10 was obtained by weight-loss testing and surface analysis techniques. Effective inhibitors are proposed, which allow protecting steel 17G1S-U against the development of anaerobic corrosion under the influence of sulfate-reducing bacteria (SRB). The effectiveness of inhibitors is estimated by the degree of their protective effect. The porous structure of the surface film contributes to the initiation of localized corrosion. Damage analysis of the specimen surface corroded under different test conditions was performed.
Failure of electric products by H2S
Authors: Majtás D. , Kreislová K. , Turek L. 
Published: June 2018

Abstract
Copper is widely used metal for industrial and public purposes due to its good corrosion resistance and excellent electrical conductivity. In indoor atmospheric environments with low level of air pollution the corrosion rate of copper is very low and it is not affected by slight increasing of temperature or relative humidity. In many indoor environment hydrogen sulphide (H2S) occurs and significantly affects the copper corrosion. CuS is a loose of black corrosion product which can’t form protective film on copper surface and promote corrosion by adsorption of moisture as carrier. In sulphide presence, the corrosion product is chalcocite Cu2S. Copper corrosion attack by H2S low concentration caused significant failure of electronic, electric equipment but also other copper parts as tubes, etc. These corrosion films can form an insulating layer on the contact surfaces causing electrical failures on the electronic devices.
On Some Properties of Fuzzy Soft almost Soft Continuous Mappings
Authors: Hussain Sabir 
Published: June 2018

Abstract
In this paper, we initiate and explore the interesting characterizations and properties of fuzzy soft almost soft continuous mappings in fuzzy soft classes. We also study and discuss the notions of fuzzy soft almost soft open(closed) mappings. Moreover the characterizations of composition of two fuzzy soft almost soft mappings are also studied. We hope that the findings in this paper will be useful for the researchers working in the fields such as fuzzy control systems, fuzzy automata, fuzzy logic, information systems and decision making problems.
Proportional Error Back-Propagation (PEB): Real-Time Automatic Loop Closure Correction for Maintaining Global Consistency in 3D Reconstruction with Minimal Computational Cost
Authors: Daneshmand Morteza , Avots Egils , Anbarjafari Gholamreza 
Published: June 2018

Abstract
This paper introduces a robust, real-time loop closure correction technique for achieving global consistency in 3D reconstruction, whose underlying notion is to back-propagate the cumulative transformation error appearing while merging the pairs of consecutive frames in a sequence of shots taken by an RGB-D or depth camera. The proposed algorithm assumes that the starting frame and the last frame of the sequence roughly overlap. In order to verify the robustness and reliability of the proposed method, namely, Proportional Error Back- Propagation (PEB), it has been applied to numerous case-studies, which encompass a wide range of experimental conditions, including different scanning trajectories with reversely directed motions within them, and the results are presented. The main contribution of the proposed algorithm is its considerably low computational cost which has the possibility of usage in real-time 3D reconstruction applications. Also, neither manual input nor interference is required from the user, which renders the whole process automatic.
Development of a Device to Measure Mass and Resuspension Rate of Dust inside Confined Environments
Authors: Malizia Andrea , Rossi Riccardo 
Published: June 2018

Abstract
A dust explosion is one of the key security issues for many industrial, pharmaceutical and agro-alimentary plants and for the safety of the workers. We have developed an optoelectronic sensor system to determine the mass of deposited dust and the resuspension rate. The authors also mount antennas on an optoelectronic sensor system to perform measurements remotely. The technique used is based on a non-invasive light absorption method. The paper reports a cost analysis in order to demonstrate the possibility to use, in our optoelectronic sensor system, several sensors to monitor large volume. In this paper the authors present the sensor system, the test and calibration of its components together with the results and the error analysis, demonstrating experimentally what is the maximum and the minimum readable range.
Dimensional and Geometrical Errors in Vacuum Thermoforming Products: An Approach to Modeling and Optimization by Multiple Response Optimization
Authors: Leite W. O. , Rubio J. C. Campos , Mata F. , Hanafi I. , Carrasco A. 
Published: June 2018

Abstract
In the vacuum thermoforming process, the product deviations depend on several parameters of the system, which make the analysis, the computational modeling, and the optimization of errors a multi-variable process with conflicting objectives. In this sense, the aim of this work was to study the dimensional and geometrical errors as well as the optimization (minimization) of these errors in one typical vacuum thermoforming product made of polystyrene (PS). In particular, it was intended to predict and minimize errors in a range of ideal tolerances using Multiple Response Optimization (MRO) Models. Thus, through the fractional factorial design (2k-p), initial experimental tests were performed using proposed measurement procedures, and Analysis of Variance being the data analysis is discussed. Following that, the MRO models were implemented which were also validated to represent the sample data. Through this analysis of the results, it can be concluded that the regression models of errors are not linear functions, hence, the developed models are valid for the studied process, and finally that the validation results proved the efficiency of MOR models developed, but these models will not be able to generalize to new situations in a range far from the values studied.
Experimental Models and Correlations between Surface Parameters after Slide Diamond Burnishing
Authors: Korzynski Mieczyslaw , Dudek Kazimiera , Palczak Arkadiusz , Kruczek Bartosz , Kocurek Paweł 
Published: June 2018

Abstract
In the paper the set of representative parameters for a comprehensive assessment of the surface texture status after slide burnishing has been proposed. The analysis of correlations between the parameters of the surface texture, obtained by slide diamond burnishing of 317Ti steel has been performed. Correlations have been determined and several groups of surface texture parameters with strong mutual correlations (also parameters uncorrelated with the other) have been selected. For both groups of parameters - representative and uncorrelated - experimental mathematical relations defining influences of the input parameters of slide diamond burnishing on the surface texture parameters have been developed. Also, interaction effects for individual parameters of this finishing process have been disclosed. It has been found that by appropriate selection of input conditions of the slide diamond burnishing process, it is possible to obtain a wide range of states of the surface texture.