bluuebunny/crossref_metadata_2025 huggingface dataset:
Habilitacje w Polsce Ludowej. Część 2. Warunki i przebieg habilitacji w prawie o stopniach i tytułach naukowych
Authors: Wojtczak Krystyna
Published: June 2018

Habilitation proceedings ending with a conferral of an academic degree were first introduced in the Polish People’s Republic by virtue of the Act on higher education of 1958. The academic title of docent, which the Act also provided for, was later endorsed by the Act of 1965 on academic titles and academic degrees. Another academic degree of ‘habilitated doctor’ (doktor habilitowany) functioned from 1968 and continued through subsequent legislative acts in force until 1990 as well as through the years after later reforms. The changes in higher education implemented in 1965–1990 were not fi nal and continued to be modifi ed in the following areas: (1) the branches and science and disciplines in which the academic degrees of docent or doktor habilitowany could be conferred; (2) the requirements which institutions (establishments of higher education, research units of the Polish Academy of Sciences and other research entities) had to fulfi l before earning the rights to confer the academic degrees referred to above; (3) establishment of the lists of institutions entitled to confer these academic degrees. The solutions then adopted were by no means triggered by the intention to replace the academic degree of docent with a degree of doktor habilitowany. On the contrary, the majority of changes, of which those happening after 1985 were even more politically biased, did not refl ect any legal need but aimed at restricting the autonomy of schools of higher  education in the scope of conferring academic degrees. This tendency extended to the conditions of commencing habilitation proceedings and the very course of the proceedings. As of 1985 one of the requirements of the key factors qualifying successful candidates was an ‘impeccable civic attitude.’ After 1985, most of the activities which had been till then conducted by committees appointed Faculty councils, were to be taken up by the relevant councils, although the latter were allowed to appoint from time to time committees to perform some of the activities related to habilitation proceedings. The Act of 1965 abandoned the requirement of the candidate’s habilitation lecture, re-established in 1985.
Hands off my Brand! The Financial Consequences of Protecting Brands through Trademark Infringement Lawsuits
Authors: Ertekin Larisa , Sorescu Alina , Houston Mark B.
Published: June 2018

Well-known brands are frequently imitated, misused, or tampered with. Firms facing these threats routinely turn to the legal system and file trademark infringement lawsuits in an attempt to prevent revenue losses and brand equity dilution. In this article, the authors address the largely unexplored issue of brand protection. First, they categorize all major types of trademark infringement. Second, using signaling and prospect theories, they present a conceptual model that outlines the financial consequences of defending a brand in court. The authors test the predictions of this framework using a large sample of trademark infringement lawsuits and find that although investors react negatively in the short term to firms’ filing and even to firms’ winning such cases, the long-term performance of firms that successfully leverage the legal system to protect their brands is positive.
Mining the Web for New Words: Semi-Automatic Neologism Identification with the NeoCrawler
Authors: Kerremans Daphné , Prokić Jelena
Published: June 2018

Lexical innovation is omnipresent and constantly at work. Studies aiming to understand the process of lexical innovation and the subsequent diffusion of neologisms therefore benefit from systematic methods of neologism identification. Retrieval procedures in the past have largely consisted of manual activities of participant observations and close reading. Recently, attempts have been made at designing automatized identification procedures, assisted by state-of-the-art natural language processing techniques and tools. Beginning with a discussion of the most commonly used neologism detection methods and applications in linguistics, the present paper will describe a semi-automatic approach to identifying new words on the web, the NeoCrawler’s Discoverer, which has been developed as part of a project on the incipient diffusion of lexical innovations. The Discoverer daily processes large batches of online text in English and automatically identifies unknown grapheme sequences as potential neologism candidates by means of a dictionary matching procedure, in which the individual tokens are matched against a very large dictionary. These potential neologisms subsequently are presented to the user for manual evaluation of their neologism status. Finally, candidates are added to the NeoCrawler’s database for continuous close monitoring of their development in the online speech community. We argue that the use of dictionary matching in neologism identification offers an efficient method to semi-automatically extract potential instances of lexical innovation with high precision and high recall when compared to previous approaches.
Spiritual Teachings by Catherine of Siena in BL Harley 2409: An Edition
Authors: Schultze Dirk
Published: June 2018

London, British Library, MS Harley 2409, written in the first half of the fifteenth century, contains a text that has come to be referred to as “long Version C” ofThe Cleanness of Soul, and which for some time has been considered as based on Catherine of Siena’sDialogo. The latter, however, is wrong, as Jennifer N. Brown (2015) has recently shown. Part of the text is probably based on William Flete’sDocumento spirituale, and it is this part which may most correctly be referred to asCleanness of Soul. It is extant in three versions, of which Version C survives in Harley 2409 and in five other manuscripts. The version in Harley, however, contains additional material from elsewhere. I shall offer a brief discussion of the whole text, its sources and its textual affiliations as well as the first critical edition of what in this long version may more generally be called “Spiritual Teachings by Catherine of Siena”.
Clustered solutions for supercritical elliptic equations on Riemannian manifolds
Authors: Chen Wenjing
Published: June 2018

Let{(M,g)}be a smooth compact Riemannian manifold of dimension{n\geq 5}. We are concerned with the following elliptic problem:

-\Delta_{g}u+a(x)u=u^{\frac{n+2}{n-2}+\varepsilon},\quad u>0\text{ in }M,

where{\Delta_{g}=\mathrm{div}_{g}(\nabla)}is the Laplace–Beltrami operator onM,{a(x)}is a{C^{2}}function onMsuch that the operator{-\Delta_{g}+a}is coercive, and{\varepsilon>0}is a small real parameter. Using the Lyapunov–Schmidt reduction procedure, we obtain that the problem under consideration has ak-peaks solution for positive integer{k\geq 2}, which blow up and concentrate at one point inM.
EU Common Values in the EU-Ukraine Association Agreement: Anchor to Democracy?
Authors: Petrov Roman
Published: June 2018

This article analyses the Association Agreement (AA) between the EU and Ukraine. It argues that this agreement constitutes a new legal framework which has the objective to establish a unique form of political association and economic integration, characterised by three specific features: comprehensiveness, complexity and conditionality, and to promote EU values into the legal systems of Ukraine. The article studies substantive and procedural means of promotion and protection of EU values in the AA. The article scrutinises objectives, institutional framework and mechanisms of enhanced conditionality and legislative approximation in the AA. In addition, the means to protect EU values (the EU’s response to security conflicts in Ukraine) are discussed.
Bicameralism: European Tendencies and Perspectives for Ukraine
Authors: Tatsiy Vasyl , Serohina Svitlana
Published: June 2018

The authors of the article continue the scientific discourse on the role and significance of bicameralism for building a modern democratic legal state. The main arguments of supporters and opponents of bicameralism have been analysed, given the complicated development of Ukrainian institutional framework and discussions over the European Committee of Regions evolution. The authors of the article attempt to supplement the list of arguments that exist in modern legal literature in favor of Ukraine’s transition to bicameralism. The challenges of European integration for Ukrainian parliament as a unitary actor have been highlighted. The authors substantiate the thesis that the formation of the second (upper) chamber does not threaten the Ukrainian unitarianism, but will contribute to further diversification of state power and at the same time increase the stability of the government in terms of a consensual, pluralistic democracy and semi-presidential government.
Using Patent Development, Education Policy and Research and Development Expenditure Policy to Understand Differences between Countries: The Case of Estonia and Finland
Authors: Dutt Pawan , Ferraro Simona , Chochia Archil , Muljar Ramona
Published: June 2018

This article is an econometric study of patent development, education policy and research and development (R&D) expenditure policy, the aim of which is to investigate the key similarities and differences when it comes to the issue of competitiveness between Estonia and Finland, particularly in the utilisation of foreign patents, as well as ranking them on the international arena. The authors of the article intend to study how it is possible to increase the technological competitiveness of small European Union Member States and the special effect of investments in research and development (R&D) and education on the competitiveness ranking of Estonia and Finland. The authors attempt to explore how Estonia can advance by learning from the model of innovative growth adopted by Finland.
Agent–Principal Dilemma and the EU Chemical Management
Authors: Filipec Ondřej
Published: June 2018

In 2007, the EU adopted the most comprehensive chemical regulation in the world. The so-called REACH requires all chemical producers and importers to register and evaluate their chemical products and, when necessary, replace them with safer alternatives. For the administration of REACH, a new European Chemicals Agency (ECHA) was established. Establishment of this specialized body under the close supervision of the European Commission created in many ways an untraditional relationship which differs from the agent-principal model. The main aim of this article is to explore the specific nature of the agent-principal relationship between the ECHA and the European Commission in the areas of delegation, information asymmetry, motivation and control structures and emphasize how specific measures may limit the negative outcomes of the agent-principal dilemma.
‘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

The 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

Over 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

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

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

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

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

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

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

In 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

A 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

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

Failures 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

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

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

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

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

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

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

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

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

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

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.
Single particle dark-field spectroscopy of spherical dimers with down to sub-10 nm gaps fabricated by the annealing of nano-pillars
Authors: Dickreuter Simon , Kern Dieter P. , Fleischer Monika
Published: June 2018

In this paper we present a method for the fabrication of plasmonic spherical dimers and oligomers with narrow gaps and tunable distances. High-aspect-ratio nano-pillars are created by the two-step evaporation of gold on structured substrates. By using electron beam lithography, it is possible to control the close spacing of the pillars. Rapid thermal annealing causes the pillars to adopt a spherical shape. Since by melting the spheres gain in diameter compared to the initial nano-pillars, the distance between two adjacent spheres can be reduced to below 10 nm. Dimers with different distances were fabricated and optically characterized by single particle dark-field spectroscopy. The characteristic red-shift of the longitudinal mode due to stronger coupling for smaller distances could be clearly observed and follows a general scaling behavior.
Preparation and characterization of AKD sizing agent by “one-pot cooking”
Authors: Huang Lian Qing , Song Xiao Ming , Cui Lu Qing , Gao Shan Shan , Chen Fu Shan , Wang Song Lin , Liu Jing Lin
Published: June 2018

Alkyl ketone dimer (AKD) is a reactive sizing agent commonly used in neutral or alkaline papermaking. Most traditional methods consist in preparing the AKD emulsion and then adding it to a starch solution. In this study, the preparation process of the AKD sizing liquid was improved and optimized. A novel preparation method of the AKD sizing agent was proposed. The effects of different reaction parameters, such as temperature, time, stirring speed, emulsifier dosage and solid content were investigated. The optimum conditions for preparing the AKD sizing agent were determined, and the sizing liquid was characterized. It was found that the water resistance of the coated paper was the highest when the reaction was carried out at 75 °C for 20 min, at a stirring speed of 700 r/min, with the emulsifier dosage of 9 % and solids content of 15 %.
Blended Learning Opportunities in Ukrainian IT Public Education
Authors: Szimkovics Tamás
Published: June 2018

Based on previous surveys the usage of ICT and blended learning is at a low level in Ukraine. To catch up with the European average, it is important to familiarize the students and teachers with blended learning in the secondary school. The information technology classes provide the best opportunity to introduce the blended learning, because they are well equipped with computing devices. This choice is positively affected by the new Ukrainian IT curriculum. The aim of this paper is to introduce the available options for blended learning in Ukrainian secondary IT education. By examining the curriculum, the possibilities of using the online space in the educational process has been determined. The blended learning methodology has been tried in practice as well.
Musical and Language Proficiency of Students Majoring in Singing
Authors: Bocsi Veronika , Ujvarosi Andrea
Published: June 2018

The aim of our study is to give an overview about language and musical skills of students in musical traning courses and we try to outline the effects of the sociocultural background in these fields. We would like to show the main patterns of language proficiency (the number of langugages they speak and levels of the language skills) and we also analyse the efficiency of language learning. The institutional language courses and the practices of interpretation in the original language will be analysed as well. Our questionnare was used in this analysis in the spring of 2017. Students from six higher educational institutions were the respondents. The number of the respondents was 90 and from the answers a database was created with the help of SPSS 19 Programme. Percents, means and chi-square statistics were used. We have verified our hypothesis which refers to the effects of students’ sociocultural background because these variables (parental education, economic capital, type of the settlement) have formed the chances and forms of the music learning (e.g. the starting date of learning music) and language skills. If we analyse the patterns of the language proficiency the central position of the English is obvious, but this pattern is not in line with the expectations of singing in the original language because the main body of vocal literature is composed in Italian, French, Russian and German. In our opinion this gap should be covered by the institutions as well and these requirements should be incorporated in the curricula.
Application of a xanthene dye, eosin Y, as spectroscopic probe in chemical and pharmaceutical analysis; a review
Authors: Derayea Sayed M. , Nagy Dalia M.
Published: June 2018

Eosin Y (EY) is an acidic xanthene dye which is mainly used in food stuff and biological staining. Various analytical methods have been reported for the utility of this dye in the quantitative determination of several pharmaceutical compounds, heavy metals in addition to some surfactants and proteins. Most of the applied methods were based on the formation of association complexes between eosin Y and the target analytes in buffered aqueous solutions. The present article represents a comprehensive review for the use of eosin Y as a probe in analytical chemistry.
Multi-locus data distinguishes between population growth and multiple merger coalescents
Authors: Koskela Jere
Published: June 2018

We introduce a low dimensional function of the site frequency spectrum that is tailor-made for distinguishing coalescent models with multiple mergers from Kingman coalescent models with population growth, and use this function to construct a hypothesis test between these model classes. The null and alternative sampling distributions of the statistic are intractable, but its low dimensionality renders them amenable to Monte Carlo estimation. We construct kernel density estimates of the sampling distributions based on simulated data, and show that the resulting hypothesis test dramatically improves on the statistical power of a current state-of-the-art method. A key reason for this improvement is the use of multi-locus data, in particular averaging observed site frequency spectra across unlinked loci to reduce sampling variance. We also demonstrate the robustness of our method to nuisance and tuning parameters. Finally we show that the same kernel density estimates can be used to conduct parameter estimation, and argue that our method is readily generalisable for applications in model selection, parameter inference and experimental design.
Negociación de posicionamientos sociales (stances) a través del debilitamiento del fonema /s/ en el español hablado por los quichuas ecuatorianos en Cali (Colombia)
Authors: Moreano Santiago Sánchez
Published: June 2018

Los quichuas ecuatorianos en Cali (Colombia) conforman un grupo transnacional sociopolíticamente organizado. En situación de contacto asimétrico con respecto a la población mayoritaria, han desarrollado diversas estrategias de adaptación al medio urbano. Una de ellas, sociolingüística y pragmática, es la apropiación y uso del debilitamiento del fonema /s/, una de las características fonéticas e identitarias más relevantes del español de Cali. Este rasgo fonético no se observa en el español andino ecuatoriano que hablan originalmente los quichuas. Sin embargo, la situación de contacto asimétrico en la que ellos están inmersos en Cali hace que la apropiación y uso del debilitamiento del fonema /s/ adquiera un valor socio-pragmático que les permite negociar posicionamientos sociales o stances en la interacción.
Mn-bearing eleonorite from Hagendorf South pegmatite, Germany: crystal structure and crystal-chemical relationships with other beraunite-type phosphates
Authors: Aksenov Sergey M. , Chukanov Nikita V. , Göttlicher Jörg , Hochleitner Rupert , Zarubina Ekaterina S. , Rastsvetaeva Ramiza K.
Published: June 2018

Mn2+-bearing eleonorite from the Hagendorf South pegmatite situated south of Waidhaus, Upper Palatinate, Bavaria, Germany was study based on single crystal X-ray analysis, Mn and Fe K-edge XANES spectroscopy, as well as IR spectroscopy. According to spectroscopic data, all Mn is bivalent, and all Fe is trivalent. The empirical formula of the mineral is (Mn2+
0.58Zn0.13Mg0.04 Fe3+
5.24)Σ5.98(PO4)4(H2O,OH,O)11. The monoclinic unit-cell parameters are: a=20.832(3) Å, b=5.1569(3) Å, c=19.200(2) Å, β=93.01(1)°; space group C2/c. The structure was refined to R
1=5.20% in anisotropic approximation using 1994 reflections with I>3σ(I). Despite in most beraunite-group minerals M1-site demonstrates selective accumulation of bivalent cations, in Mn-bearing eleonorite Mn2+-cations are disordered between octahedral sites without statistical predominance anywhere; all octahedral M(1–4)-sites are predominantly occupied by Fe3+. M1-site is half-occupied by Fe3+ and contains subordinate Mn2+ and minor Zn2+ and Mg2+. Based on the new data we suppose that Mn-bearing eleonorite was formed as a secondary phase as a result of oxidation of a primary Mn-bearing beraunite-group mineral in with Mn2+ was initially distributed between different M sites.
Orthoamide und Iminiumsalze, XCII. Synthese und Reaktionen von Orthoamiden aus ethinylierten Terpenderivatena
Authors: Kantlehner Willi , Mezger Jochen , Kreß Ralf , Frey Wolfgang
Published: June 2018

β-Ionone and camphor were ethynylated to give the alkynols 14, 16, 17 which can be transformed to the alkynolethers 5b, 5i, 5j, 5k, 5l, 5m by treatment with dimethylsulfate and chlorotrimethylsilane, respectively. From the alkynolethers 5h, 5i, 5j/5k, 5l/5m the orthoamide derivatives 4h, 4i, 4j/4k, 4l/4m can be prepared by treatment with N,N,N′,N′,N″,N″-hexamethylguanidinium chloride (8) in the presence of sodium hydride. The orthoamides 4h, 4i react with the sulfonamide 30 under condensation yielding the N-sulfonylated acrylamidines 31, 32. From the orthoamide 4h and p-nitroaniline the propiolamidine 29 could be obtained. The orthoamides 4j/4k and 4l/4m, react with benzamidine to give the pyrimidines 33, 34, respectively. In the reaction of malonodinitrile (9a) with the orthoamides 4i and 4j/4k, mixtures of 1,1-diamino-1,3-butadienes 36, 38 and 1,3-diamino-1,3-butadienes 37 and 39 are produced, respectively. From CH2-acidic compounds as ethylcyanacetate (9b), diethyl-malonate (9c) and nitromethane (9d) and the orthoamide 4i the 1,1-diamino-1,3-butadienes 36b–d were produced. The pyridone derivative 40 can be prepared from cyanoacetamide (9e) and the orthoamide 4i. The condensation of the orthoamides 4j/4k with cyanoacetamide (9e) affords a mixture of the pyrimidone 41 and the nicotinonitrile 42.
Synthesis of InP/ZnS Nanocrystals and Phase Transfer by Hydrolysis of Ester
Authors: Lübkemann Franziska , Gusenburger Timo C. , Hinrichs Dominik , Himstedt Rasmus , Dorfs Dirk , Bigall Nadja C.
Published: June 2018

The synthesis of highly luminescent non-toxic nanocrystals (NCs) and the subsequent phase transfer to aqueous solution by hydrolysis of the crystal-bound ester are presented. Therefore, the synthesis of the spherical semiconductor system InP/ZnS was modified by changing the sulfur precursor in the synthesis from 1-dodecanethiol to dodecyl 3-mercaptopropionate (D3MP). By employing D3MP both as sulfur precursor for the ZnS shell growth and as stabilizing ligand, the phase transfer from organic to aqueous solution can be performed easily. Instead of the usually employed ligand exchange with mercaptopropionic acid, the NCs are only shaken with a sodium borate buffer in order to obtain aqueous soluble NCs by hydrolysis of the ester. In future work, the NCs must be protected against aggregation and the long term stability has to be increased. The optical properties of the samples are investigated by UV/Vis and photoluminescence spectroscopy, and the morphology of the nanoparticles (NPs) before and after phase transfer is determined by transmission electron microscopy.
Durability Properties of Pavement Quality Concrete Containing Fine RAP
Authors: Singh Surender , Ransinchung G. D. R. N.
Published: June 2018

In the present study, the potential of supplementary cementitious materials such as silica fume (SF), fly ash (FA), and sugarcane bagasse ash (SCBG) for enhancing the durability properties of pavement quality concrete (PQC) mixes containing 75 % fine reclaimed asphalt pavement (75RAP) is assessed. Different physical and durability properties such as water absorption, total permeable voids, initial rate, secondary rate and coefficient of water absorption, and performance in sulfate and chloride-rich environments were evaluated. It was found that the ASTM recommended temperature of 110 ± 5°C for evaluating water absorption and permeable voids should be changed to 48 ± 2°C to prevent the melting of asphalt present in RAP. Similarly, the duration for completely drying the specimens shall be at least eight days. It was observed that incorporation of fine RAP could compromise with the durability of the PQC mixes significantly. Inclusions of all the considered admixtures (except SF) were found to have an insignificant effect on the modulus of rupture, however, significant enhancement in the durability properties of 75RAP mix was observed (except SCBG). The blending of 15 % FA with 10 % SF was found to enhance the durability performance of 75RAP mix better than the mix containing natural aggregates.