bluuebunny/crossref_metadata_2025 huggingface dataset:
Correction: Electrochemical and electrocatalytic reaction characteristics of boron-incorporated graphene via a simple spin-on dopant process
Authors: Jang A.-Rang , Lee Young-Woo , Lee Sang-Seok , Hong John , Beak Seong-Ho , Pak Sangyeon , Lee Juwon , Shin Hyeon Suk , Ahn Docheon , Hong Woong-Ki , Cha SeungNam , Sohn Jung Inn , Park Il-Kyu
Published: April 2018

Correction for ‘Electrochemical and electrocatalytic reaction characteristics of boron-incorporated graphene via a simple spin-on dopant process’ by A-Rang Jang et al., J. Mater. Chem. A, 2018, DOI: 10.1039/c7ta09517a.
Highly stable and efficient pure green up-conversion emission of rod-like β-NaGdF4:Yb3+,Ho3+ submicro-crystals via ion-exchange for fluorescent labeling
Authors: Fan Shaohua , Gao Guojun , Lin Zhiquan , Li Weichang , Fan Sijun , Sun Shiyu , Sun Hongtao , Hu Lili
Published: April 2018

Herein, we report the highly stable and efficient pure green up-conversion emission of β-NaGdF4:Yb3+,Ho3+ rod-like submicro-crystals, synthesized via an ion-exchange method. This material shows great potential for fluorescence labeling applications.
The association of polymorphisms in nucleotide excision repair genes with ovarian cancer susceptibility
Authors: Zhao Zhiguang , Zhang Anqi , Zhao Yuan , Xiang Junmiao , Yu Danyang , Liang Zongwen , Xu Chaoyi , Zhang Qiong , Li Jianmin , Duan Ping
Published: April 2018

Nucleotide excision repair (NER), the core mechanism of DNA repair pathway, was commonly used to maintain genomic stability and prevent tumorigenesis. Previous investigations have demonstrated that single nucleotide polymorphisms (SNPs) of NER pathway genes were associated with various types of cancer. However, there was no research elucidating the genetic association of entire NER pathway with ovarian cancer susceptibility. Therefore, we conducted genotyping for 17 SNPs of six NER core genes (XPA, XPC, XPG, ERCC1, ERCC2, and ERCC4) in 89 ovarian cancer cases and 356 cancer-free controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to describe the strength of association. The result showed that both ERCC1 rs11615 and XPC rs2228000 were significantly associated with reduced risk of ovarian cancer under dominant genetic model (adjusted OR = 0.35, 95% CI = 0.20–0.61, P=0.0002 and adjusted OR = 0.49, 95% CI = 0.30–0.81, P=0.005 respectively). In addition, XPC rs2228001 and ERCC2 rs238406 had statistically significant association with the increased risk of ovarian cancer under dominant genetic model (adjusted OR = 1.72, 95% CI = 1.02–2.92, P=0.043 and adjusted OR = 2.07, 95% CI = 1.07–4.01, P=0.032 respectively). ERCC1 rs3212986 were related with the increased risk of ovarian cancer under recessive model (adjusted OR = 2.40, 95% CI = 1.30–4.44, P=0.005). In conclusion, our results indicated that ERCC1, XPC and ERCC2 might influence ovarian cancer susceptibility. Further research with large sample size is warranted to validate the reliability and accuracy of our results.
Gaze Toward Naturalistic Social Scenes by Individuals With Intellectual and Developmental Disabilities: Implications for Augmentative and Alternative Communication Designs
Authors: Liang Jiali , Wilkinson Krista
Published: April 2018

Purpose

A striking characteristic of the social communication deficits in individuals with autism is atypical patterns of eye contact during social interactions. We used eye-tracking technology to evaluate how the number of human figures depicted and the presence of sharing activity between the human figures in still photographs influenced visual attention by individuals with autism, typical development, or Down syndrome. We sought to examine visual attention to the contents of visual scene displays, a growing form of augmentative and alternative communication support.

Method

Eye-tracking technology recorded point-of-gaze while participants viewed 32 photographs in which either 2 or 3 human figures were depicted. Sharing activities between these human figures are either present or absent. The sampling rate was 60 Hz; that is, the technology gathered 60 samples of gaze behavior per second, per participant. Gaze behaviors, including latency to fixate and time spent fixating, were quantified.

Results

The overall gaze behaviors were quite similar across groups, regardless of the social content depicted. However, individuals with autism were significantly slower than the other groups in latency to first view the human figures, especially when there were 3 people depicted in the photographs (as compared with 2 people). When participants' own viewing pace was considered, individuals with autism resembled those with Down syndrome.

Conclusion

The current study supports the inclusion of social content with various numbers of human figures and sharing activities between human figures into visual scene displays, regardless of the population served. Study design and reporting practices in eye-tracking literature as it relates to autism and Down syndrome are discussed.

Supplemental Material

https://doi.org/10.23641/asha.6066545
Analogue predistorter based on non‐linear CRLHTL
Authors: Deng Hailin , Zhou Dongfang , Zhang Dewei , Zhang Yi
Published: April 2018

A low insertion loss (IL) analogue predistorter using non‐linear composite right–left‐handed transmission line (CRLHTL) is presented. The proposed predistorter consists of two symmetrical CRLHTL unit cells. In the experiment, this predistorter can achieve about 2.2 dB gain expansion and 17° phase shift during 4.4–4.5 GHz with only 4.3 dB IL. A C‐band 40 W solid‐state power amplifier observes 8.1 dB enhancement in the intermodulation at −6 dB output power backoff when linearised by the proposed predistorter.
Less conservative output‐feedback tracking control design for polynomial fuzzy systems
Authors: Pakkhesal Sajjad , Mohammadzaman Iman
Published: April 2018

In this study, the problem of output‐feedback tracking control for polynomial‐fuzzy‐model‐based systems is studied. In this problem, the objective is to drive the system states of a non‐linear plant to follow the states of a given reference model using a fuzzy controller. The design problem is formulated as a sum‐of‐squares (SOS) optimisation, which can be solved efficiently using semidefinite programming. Here, unlike previous SOS‐based tracking control approaches, Lyapunov matrix depends on all of the system states, which decreases the conservatism of the stability criteria. Moreover, the SOS conditions are derived to guarantee the system stability subject to a given H∞ performance. Two simulation examples are given to demonstrate the effectiveness and benefits of the proposed method.
Domain segmentation for low‐cost surrogate‐assisted multi‐objective design optimisation of antennas
Authors: Koziel Slawomir , Bekasiewicz Adrian
Published: April 2018

Information regarding the best possible design trade‐offs of an antenna structure can be obtained through multi‐objective optimisation (MO). Unfortunately, MO is extremely challenging if full‐wave electromagnetic (EM) simulation models are used for performance evaluation. Yet, for the majority of contemporary antennas, EM analysis is the only tool that ensures reliability. This study introduces a procedure for accelerated MO design of antennas that exploits cheap data‐driven surrogates, as well as MO evolutionary algorithm to yield an initial approximation of the Pareto set. The final Pareto set is found using output space mapping. The major contribution of this work is a further reduction of the computational cost of surrogate model construction using a design space segmentation mechanism, where a part of the space containing the Pareto front is first identified by means of single‐objective optimisation runs and subsequently represented by a set of adjacent compartments with separate surrogate models established within them. Segmentation allows for significant reduction of the number of training points necessary to build a reliable surrogate and thus the overall optimisation cost. The presented technique is demonstrated using two antenna structures and compared with a state‐of‐the‐art surrogate‐assisted techniques. Experimental validation is also provided.
Solvothermal synthesis of Au@Fe3O4 nanoparticles for antibacterial applications
Authors: Kelgenbaeva Zhazgul , Abdullaeva Zhypargul , Murzubraimov Bektemir
Published: April 2018

We present Au@Fe3O4 nanoparticles obtained from Fe nanoparticles and HAuCl4 using a simple solvothermal method. Trisodium citrate (C6H5Na3O7*2H2O) served as a reducing agent for Au. X-ray diffraction analysis, electronic microscopes and energy-dispersive X-ray spectroscopy revealed cubic structure, elemental composition (Au, Fe and O) and spherical shape of nanoparticles. Antibacterial activity of the sample was tested against E. coli bacteria and obtained results were discussed.
Measurements of the gamma-quanta angular distributions emitted from neutron inelastic scattering on 28Si
Authors: Fedorov N.A. , Grozdanov D.N. , Bystritskiy V.M. , Kopach Yu.N. , Ruskov I.N. , Skoy V.R. , Tretyakova T.Yu. , Zamyatin N.I. , Wang D. , Aliev F.A. , Hramco C. , Gandhi A. , Kumar A. , Dabylova S. , Bogolubov E.P. , Barmakov Yu.N.
Published: April 2018

The characteristic gamma radiation from the interaction of 14.1 MeV neutrons with a natural silicon sample is investigated with Tagged Neutron Method (TNM). The anisotropy of gamma-ray emission of 1.779 MeV was measured at 11 azimuth angles with a step of ∠15°. The present results are in good agreement with some recent experimental data.
Possible Experiment for the Demonstration of Neutron Waves Interaction with Spatially Oscillating Potential
Authors: Miloi Mădălina Mihaela , Goryunov Semyon , Kulin German
Published: April 2018

A wide range of problems in neutron optics is well described by a theory based on application of the effective potential model. It was assumed that the concept of the effective potential in neutron optics have a limited region of validity and ceases to be correct in the case of the giant acceleration of a matter. To test this hypothesis a new Ultra Cold neutron experiment for the observation neutron interaction with potential structure oscillating in space was proposed. The report is focused on the model calculations of the topography of sample surface that oscillate in space. These calculations are necessary to find an optimal parameters and geometry of the planned experiment.
NeuRad detector prototype pulse shape study
Authors: Muzalevsky I. , Chudoba V. , Belogurov S. , Kiselev O. , Bezbakh A. , Fomichev A. , Krupko S. , Slepnev R. , Kostyleva D. , Gorshkov A. , Ovcharenko E. , Schetinin V.
Published: April 2018

The EXPERT setup located at the Super-FRS facility, the part of the FAIR complex in Darmstadt, Germany, is intended for investigation of properties of light exotic nuclei. One of its modules, the high granularity neutron detector NeuRad assembled from a large number of the scintillating fiber is intended for registration of neutrons emitted by investigated nuclei in low-energy decays. Feasibility of the detector strongly depends on its timing properties defined by the spatial distribution of ionization, light propagation inside the fibers, light emission kinetics and transition time jitter in the multi-anode photomultiplier tube. The first attempt of understanding the pulse formation in the prototype of the NeuRad detector by comparing experimental results and Monte Carlo (MC) simulations is reported in this paper.
Electronic catalogue of muonic X-rays
Authors: Zinatulina Daniya , Briançon Chantal , Brudanin Victor , Egorov Viacheslav , Perevoshchikov Lev , Shirchenko Mark , Yutlandov Igor , Petitjean Claude
Published: April 2018

μX-ray spectra for Z=9-90 were measured with HPGe detectors and muonic beams of PSI (Villigen, Switzerland) [1]. The results are presented as electronic atlas composed of graphic plots. The atlas is available at JINR site [2].
PANDA Muon System Prototype
Authors: Abazov Victor , Alexeev Gennady , Alexeev Maxim , Frolov Vladimir , Golovanov Georgy , Kutuzov Sergey , Piskun Alexei , Samartsev Alexander , Tokmenin Valeri , Verkheev Alexander , Vertogradov Leonid , Zhuravlev Nikolai
Published: April 2018

The PANDA Experiment will be one of the key experiments at the Facility for Antiproton and Ion Research (FAIR) which is under construction now in the territory of the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany. PANDA is aimed to study hadron spectroscopy and various topics of the weak and strong forces. Muon System is chosen as the most suitable technology for detecting the muons. The Prototype of the PANDA Muon System is installed on the test beam line T9 at the Proton Synchrotron (PS) at CERN. Status of the PANDA Muon System prototype is presented with few preliminary results.
Search for new neutral gauge bosons with the CMS Experiment at the LHC
Authors: Lanyov Alexander , Shmatov Sergei , Zhizhin Ilia
Published: April 2018

A search for narrow resonances in dimuon invariant mass spectra has been performed using 13 fb-1 data obtained in 2016 from proton-proton collisions at √s = 13 TeV with the CMS experiment at the LHC. No evidence for physics beyond standard model is found. Limits on the production cross section and the masses of hypothetical particles that could appear in the scenarios of new physics have been set.
Measurement of the Forward-Backward Asymmetry in the Drell-Yan Dilepton Production in Proton-Proton Collisions at the CMS Experiment at the LHC
Authors: Shalaev V. , Gorbunov I. , Shmatov S.
Published: April 2018

In this paper we review the results of a measurement of the forward-backward asymmetry of oppositely charged lepton pairs produced via Z/γ* boson in pp collisions during the LHC Run 1 at √s = 8 TeV with integrated luminosity 19.1 fb-1 (2012). We also present our preliminary results obtained with Monte Carlo samples at √s = 13 TeV
Architecture of distributed picture archiving and communication systems for storing and processing high resolution medical images
Authors: Tokareva Victoria
Published: April 2018

New generation medicine demands a better quality of analysis increasing the amount of data collected during checkups, and simultaneously decreasing the invasiveness of a procedure. Thus it becomes urgent not only to develop advanced modern hardware, but also to implement special software infrastructure for using it in everyday clinical practice, so-called Picture Archiving and Communication Systems (PACS). Developing distributed PACS is a challenging task for nowadays medical informatics. The paper discusses the architecture of distributed PACS server for processing large high-quality medical images, with respect to technical specifications of modern medical imaging hardware, as well as international standards in medical imaging software. The MapReduce paradigm is proposed for image reconstruction by server, and the details of utilizing the Hadoop framework for this task are being discussed in order to provide the design of distributed PACS as ergonomic and adapted to the needs of end users as possible.
Parallel Algorithm for Solving TOV Equations for Sequence of Cold and Dense Nuclear Matter Models
Authors: Ayriyan Alexander , Buša Ján , Grigorian Hovik , Poghosyan Gevorg
Published: April 2018

We have introduced parallel algorithm simulation of neutron star configurations for set of equation of state models. The performance of the parallel algorithm has been investigated for testing set of EoS models on two computational systems. It scales when using with MPI on modern CPUs and this investigation allowed us also to compare two different types of computational nodes.
U-238 fission and Pu-239 production in subcritical assembly
Authors: Grab Magdalena , Wojciechowski Andrzej
Published: April 2018

The project touches upon an issue of U-238 fission reactions and Pu-239 production reactions in subcritical assembly. The experiment took place in November 2014 at the Dzhelepov Laboratory of Nuclear Problems (JINR, Dubna) using PHASOTRON.Data of this experiment were analyzed in Laboratory of Information Technologies (LIT). Four MCNPX models were considered for simulation: Bertini/Dresnen, Bertini/Abla, INCL4/Drensnen, INCL4/Abla. The main goal of the project was to compare the experimental data and simulation results. We obtain a good agreement of experimental data and computation results especially for detectors placed besides the assembly axis. In addition, the U-238 fission reactions are more probable to be observed in the region of a higher particle energy spectrum, located closer to the assembly axis and the particle beam as well and vice versa Pu-239 production reactions were dominant in the peripheral region of geometry.
Effective Methods for Solving Band SLEs after Parabolic Nonlinear PDEs
Authors: Veneva Milena , Ayriyan Alexander
Published: April 2018

A class of models of heat transfer processes in a multilayer domain is considered. The governing equation is a nonlinear heat-transfer equation with different temperature-dependent densities and thermal coefficients in each layer. Homogeneous Neumann boundary conditions and ideal contact ones are applied. A finite difference scheme on a special uneven mesh with a second-order approximation in the case of a piecewise constant spatial step is built. This discretization leads to a pentadiagonal system of linear equations (SLEs) with a matrix which is neither diagonally dominant, nor positive definite. Two different methods for solving such a SLE are developed - diagonal dominantization and symbolic algorithms.
Application of Turchin's method of statistical regularization
Authors: Zelenyi Mikhail , Poliakova Mariia , Nozik Alexander , Khudyakov Alexey
Published: April 2018

During analysis of experimental data, one usually needs to restore a signal after it has been convoluted with some kind of apparatus function. According to Hadamard's definition this problem is ill-posed and requires regularization to provide sensible results. In this article we describe an implementation of the Turchin's method of statistical regularization based on the Bayesian approach to the regularization strategy.
Study of the Bc → J/ψ + D(*)q decays in covariant confined quark model
Authors: Issadykov Aidos
Published: April 2018

In this work we study the Bc → J/ψ + D(*)q decays. It was defined ratios (RD*s/Ds, RD*/D, RD*/D*s and RD/Ds) of nonleptonic branching ratios of Bc meson, which will be hopefully tested on LHC experiments. We compare the obtained results with available experimental data and with the results from other theoretical approaches.
Speech interaction strategies for a humanoid assistant
Authors: Stüker Sebastian , Constantin Stefan , Niehues Jan , Nguyen Thai-Son , Müller Markus , Pham Ngoc Quan , Rüde Robin , Waibel Alex
Published: April 2018

The goal of SecondHands, a H2020 project, is to design a robot that can offer help to a maintenance technician in a proactive manner. The robot is to act as a second pair of hands that can assist the technician when he is in need of help. In order for the robot to be of real help to the technician, it needs to understand his needs and follow his commands. Interaction via speech is a crucial part of this. Due to the nature of the situation in which the interactions take place, often the technician needs to speak to the robot when under stress performing strenuous physical labor, the classical turn based interaction schemes need to be transformed into dialogue systems that perform stream processing, anticipating user intentions, correcting itself as more information become available, in order to be able to respond in a rapid manner. In order to meet these demands, we are developing low-latency streaming based automatic speech recognition systems in combination with recurrent neural network based Natural Language Understanding systems that perform slot filling and intent recognition in order for the robot to provide assistance in a rapid manner, that can be partly based on speculative classifications that are then being refined as more speech becomes available.
Control of shimmy vibration in aircraft landing gears based on tensor product model transformation and twisting sliding mode algorithm
Authors: Kuntanapreeda Suwat
Published: April 2018

Shimmy vibration is a common phenomenon in landing gear systems during either the take-off or landing of aircrafts. The shimmy vibration is undesirable since it can damage the landing gear and discomforts the pilots and passengers. In this work, tensor product model transformation (TPMT) and twisting sliding mode algorithm (TSMA) are utilized to design a robust controller for suppression of the shimmy vibration. The design has two steps. First, the TPMT is applied to determine the first part of the controller to suppress the vibration of the undisturbed system. After that, the TSMA is adopted to obtain another part of the controller to eliminate the remaining vibration caused by disturbances. By integrating these two parts, the proposed controller is obtained. Simulation studies are provided to demonstrate the effectiveness of the controller.
Energy-efficient control of a multi-section supercapacitor power supply of an electric drive
Authors: Mozzhechkov Vladimir
Published: April 2018

A method for synthesizing the control laws of a multi-section supercapacitor power supply of an electric drive is developed. The synthesized control law for an electric drive realizes the prescribed motion and minimizes the required capacitance of the power source. It is achieved through optimal disconnection and connection to the power line of the drive at designated times of one of the power supply sections. Reduction of the required capacitance of the power supply is achieved through a fuller discharge of some of its sections in motion conditions requiring a low level of electrical voltage and saving high voltage in other sections for the respective motion conditions. A mathematical formulation of the problem and a method of its solution is proposed. An example of the implementation of the proposed method is considered.
Development trends of combined inductance-capacitance electromechanical energy converters
Authors: Karayan Hamlet , Gandilyan Seyran
Published: April 2018

In the article the modern state of completely new direction of electromechanical science such as combined inductive-capacitive electromechanics is considered. The wide spectra of its possible practical applications and prospects for further development are analyzed. A new approach for mathematical description of transients in dualcon jugate dynamic systems is proposed. On the basis of the algorithm differential equations for inductive-capacitive compatible electromechanical energy converters are derived. The generalized Lagrangian theory of combined inductively-capacitive electric machines was developed as a union of generalized Lagrangian models of inductive and capacitive electro-mechanical energy converters developed on the basis of the basic principles of binary-conjugate electrophysics. The author gives equations of electrodynamics and electromechanics of combined inductive-capacitive electric machines in case there are active electrotechnical materials of dual purpose (ferroelectromagnets) in the structure of their excitation system. At the same time, the necessary Lagrangian for combined inductive-capacitive forces was built using new technologies of interaction between inductive and capacitive subsystems. The joint solution of these equations completely determines the dynamic behavior and energy characteristics of the generalized model of combined machines of any design and in any modes of interaction of their functional elements
Investigation of the structural characteristics of the electrodes of energy storage devices used in power plants based on renewable energy sources
Authors: Kiseleva Elena , Lelin Fedor
Published: April 2018

The porous structure of electrode materials was studied and an experimental analysis of the role of macropores in the electrodes of model double layer supercapacitors was carried out. It is shown that the excess value of the volume of macropores in the electrodes plays a negative role and, on the whole, in a complex manner, decreases the specific electrochemical characteristics of these devices. As a result of the research, high-efficiency activated carbons from wood waste, designed for use in supercapacitors, have been created. Correlations have been established between the parameters of the regime of thermochemical activation of wood, the porous structure of synthesized activated carbons and electrodes based on them and the specific characteristics of supercapacitors.
Estimation of spark protection device's reliability influence on the fire safety of apartment's network with harmonic currents and voltage up to 1 KV
Authors: Kuznetsov Pavel , Solyonyj Sergej , Sychev Yuriy , Shishlakov Vladislav , Solenaya Oksana
Published: April 2018

This article analyses the statistical level of fire danger in living premises. Its influence on the reliability of apartments' electrical system is estimated and role of spark protection devices in this process is designated. In addition, a role of harmonic currents in the process of dangerous contact joints detection shown and described. In the conclusion, main requirements for diagnostic of apartments' low-voltage electrical networks are formulated.
Data support system for controlling decentralised nuclear power industry facilities through uninterruptible condition monitoring
Authors: Povarov Vladimir , Danilov Aleksandr , Burkovsky Viktor , Gusev Konstantin
Published: April 2018

The article describes the automated uninterruptible multi-parameter system for monitoring operational vulnerability of critical NPP components, which differs from existing ones by being universally applicable for analysing mechanical damage of nuclear power unit components. The system allows for performing routine assessment of metal structures. The assessment of strained condition of a deteriorating component is based on three-dimensional finite element simulation with calculations adjusted with reference to in-situ measurements. A program for calculation and experimental analysis of maximum load and durability of critical area forms the core of uninterruptible monitoring system. The knowledge base on performance of the monitored components in different operating conditions and the corresponding comprehensive analysis of strained condition and deterioration rates compose the basis of control system data support, both for operating nuclear power units and robotic maintenance and repair systems.
Mobile robot control based on noninvasive brain-computer interface using hierarchical classifier of imagined motor commands
Authors: Gundelakh Filipp , Stankevich Lev , Sonkin Konstantin
Published: April 2018

The study describes approaches of direct and supervisor control of a mobile robot based on a non-invasive brain-computer interface. An interface performs electroencephalographic signal decoding, which includes several steps: filtering, artefact detection, feature extraction, and classification. In this study, a classifier with hierarchical structure was developed and applied. Description of a committee of classifiers based on neural networks and support vector machines is given. The developed classifier demonstrated accuracy 50 ± 5% of single trial decoding of four classes of imaginary fine movements. Prospects of using non-invasive brain-computer interface for control of mobile robots was described. Key applications of the system are maintenance of immobilized patients and rehabilitation procedures both in clinic and at home.
Implementation of impedance trajectory control on a 6-DoF manipulator
Authors: Shardyko Igor , Titov Victor
Published: April 2018

Aiming at enhancing the performance of a robotic system, i.e. of a robot manipulator, it is extremely important to ensure the safety of its functioning and the convenience of operating it. Special attention is required if there is a possibility of a collision, especially with costly equipment or with a person. Among the different means and approaches to prevent or react to such situations, implementation of forcetorque control is considered in this paper. A trajectory task is analysed and an impedance control law is employed to achieve the desired robot behaviour. The effectiveness of the approach has been verified by using a 6-DoF elbow manipulator to perform two types of operations: a peg-in-hole task and path execution with obstacles on the way.
Highly passable propulsive device for UGVs on rugged terrain
Authors: Gradetsky Valery , Ermolov Ivan , Knyazkov Maxim , Lapin Boris , Semenov Eugeny , Sobolnikov Sergey , Sukhanov Artem
Published: April 2018

One of the priority functional tasks of both industrial and mobile robotics is to perform operations for moving payloads in space. Typically, researchers pay attention to control the movement of the robot on different soils. It is necessary to underline the specificity of the movements of mobile robots, the main functional purpose of which is the movement of different objects. Unlike other robot applications there is the fact that transported cargo may have different mass-dimensional characteristics. The payload should be comparable to the mass of the mobile robot. This article addresses the issue of passability on rough terrain for a mobile robot performing the transport task and proposed a technical solution in the field of mechanics of propulsion to improve propelling of the traction wheel of the mobile robot with the ground.
Ontology-driven approach for describing industrial socio-cyberphysical systems’ components
Authors: Teslya Nikolay , Ryabchikov Igor
Published: April 2018

Nowadays, the concept of the industrial Internet of things is considered by researchers as the basis of Industry 4.0. Its use is aimed at creating a single information space that allows to unite all the components of production, starting from the processed raw materials to the interaction with suppliers and users of completed goods. Such a union will allow to change the established business processes of production to increase the customization of end products for the consumer and to reduce the costs for its producers. Each of the components is described using a digital twin, showing their main characteristics, important for production. The heterogeneity of these characteristics for each of the production levels makes it very difficult to exchange information between them. To solve the problem of interaction between individual components this paper proposes to use the ontological approach to model the components of industrial socio-cyberphysical systems. The paper considers four scenarios of interaction in the industrial Internet of things, based on which the upper-level ontology is formed, which describes the main components of industrial socio-cyberphysical systems and the connections between them.
Interactive lighting art installation in virtual environments as a stimulus for public Ownership in urban development – Brighter Brunnshög
Authors: Kim Boa , Xylakis Emmanouil , Triantafyllidis Georgios
Published: April 2018

Urban development projects are often1opposed by residents due to a lack of sense of ownership over the project. This study is a methodological approach in creating interactive lighting art installations in virtual environments to stimulate this sense of ownership. The study is part of the Brighter Brunnshög project, which is the initial stage of the urban development plan for new research centres in Brunnshög, Sweden. The main goal of this research is to explore the impact of virtual lighting art installations on residents´ attitudes toward the urban development of their area. The research is based on qualitative field studies and focus group interviews, and was assessed with questionnaires. The design itself is based on the results of the research data and consists of three criteria; awareness, mutuality, and adaptability. The results of the assessment indicate that interactive lighting art installations in virtual environments have the potential to create awareness of areas under urban development, which is a fundamental condition for creating place attachment, and by extension, a sense of ownership over the project.
Creating identity with nature inspired lighting design – The Sensitive Organism
Authors: Hiort-Lorenzen Anna-Rosa , Kublik Beáta E. , Jäntsch Gordon , Dudkiewicz Paulina M. , Triantafyllidis Georgios
Published: April 2018

People, as living organisms, exist in symbiosis with nature; therefore, contact with nature is a basic human need. City nature is an important aspect of the urban living environment because people need an escapist experience from the everyday city life that they should find within their close environment. The outdoor lighting of urban nightscapes has a major influence on people's perception of space. Cities with an increasing number of inhabitants and late-night economic activity transform into 24-hour operating cities. This means that more attention should be given to investigating the social needs of public spaces in terms of night-time urban lighting, creating experiences and identities with nature. This paper aims to emphasize the potential hidden in nature-inspired lighting as a topic for further development in the field of lighting design. Nature inspired lighting is based on a transdisciplinary approach, where terms like biomimicry, biophilia, and urban green space adopted from other subject fields than lighting influence the lighting design process in order to create a product addressing human inner connectedness to nature. The example used in this paper presents the concept of a lighting master plan called “The Sensitive Organism”.
Architectural lighting in search of identity: The environmental approach
Authors: Sokolova Marina , Silkina Marina
Published: April 2018

This article examines the perception of architectural environment, and various approaches and methods of its light organization, including the design of evening illumination and objects of light design. Traced influence of the figurative discoveries of light art on light design, and the problems of the formation of individual light-plastic code of the urban environment as a means of manifesting the identity of the place are revealed.
Artificial light emission analysis for the city of St. Petersburg
Authors: Kolgushkina Svetlana
Published: April 2018

Artificial light emission within the limits of major cities is increasing year by year. The level of this rapid growth depends on the influence of complex factors such as urban enlargement, air pollution, environmental conditions, lack of outdoor lighting master-planning, etc. Continuing monitoring of sky glow changes is an important part of the lighting environment’s complex analysis. This paper estimates the contribution of 18 districts of St. Petersburg to the glow between 2014 and 2017, evaluated with the use of Garstang’s model and GIS-based analysis of VIIRS data. The dynamic changes in sky brightness show a significant increase in the anthropogenic sky glow over three years.
Proximal tibia stress fracture with Osteoarthritis of knee − Radiological and functional analysis of one stage TKA with long stem
Authors: Soundarrajan Dhanasekaran , Rajkumar Natesan , Dhanasekararaja Palanisamy , Rajasekaran Shanmuganathan
Published: April 2018

Introduction: Proximal tibia stress fractures with knee osteoarthritis pose a challenging situation. We evaluated the radiological and functional outcome of one-stage total knee arthroplasty (TKA) and long stem for patients with varied grades of knee arthritis and proximal tibia stress fractures. 

Methods: We analysed 20 patients from April 2012 to March 2017 with proximal tibia stress fractures associated with knee osteoarthritis of varied grades. Out of 20 patients, five were acute fresh fractures. The mean age was 64 years (range, 52–78) which includes three men and 17 women. Previous surgery in the same limb, rheumatoid arthritis, valgus deformity were excluded. All patients were treated with posterior stabilised TKA with long stem, of which, four patients had screw augmentation for medial tibial bone defect and two patients with malunited fracture at stress fracture site required osteotomy, plating and bone grafting. Two patients had two level stress fracture of tibia in the same leg.

Results: The mean follow-up period was 28 (range, 6–60) months. The mean tibiofemoral angle improved from 18.27° varus to 1.8° valgus. The mean knee society score improved from 21.9 (range, −10 to 45) to 82.8 (range, 15–99) [p < 0.05]. The mean Knee Society functional score improved from 15.5 (range, −10 to 40) to 76.8 (range, 10–100) [p < 0.05]. All fractures got united at the last follow-up. One patient had infection and wound dehiscence at six months for which debridement done and had poor functional outcome.

Conclusion: TKA with long stem gives excellent outcome, irrespective of severity of arthritis associated with stress fracture. By restoring limb alignment and bypassing the fracture site, it facilitates fracture healing. Early detection and prompt intervention is necessary to prevent the progression to recalcitrant non-union or malunion.
Preparation of 3-Alkyl-Substituted 1-Alkoxyallenes – Synthetic and Mechanistic Aspects
Authors: Hausherr Arndt , Reissig Hans-Ulrich
Published: April 2018

Two routes to 3-alkyl-substituted 1-alkoxyallenes are investigated. The deprotonation and alkylation at C-3 of methoxyallene requires prior silylation at C-1 and provides mixtures of the expected products and 1-alkyl-substituted methyl propargyl ethers as minor component. The desilylation of these mixtures affords the desired 3-alkyl-substituted 1-methoxyallenes together with the 1-alkyl-substituted isomers in moderate overall yields. Following the second route, the disadvantages of this three-step method are avoided. In analogy to Brandsma, C-3 alkylation of methyl propargyl ether and subsequent isomerization under basic conditions affords two of the desired 3-alkyl-substituted methoxyallenes in good yields. This method is also applied to propargyl ethers bearing a diacetone-fructose-derived auxiliary. Two diastereomeric 3-alkyl-substituted 1-alkoxyallenes are formed during the isomerization, the ratio being strongly dependent on the reaction conditions. The mechanistic aspects of these observations are discussed on the basis of deuteration experiments and the configurational stability of the ambident propargyl-allenyl carbanion involved.
Couples Facing the Birth of a Newborn with a Congenital Anomaly: PTSD Symptoms in the First Year
Authors: Bevilacqua Francesca , Morini Francesco , Zaccara Antonio , De Marchis Chiara , Braguglia Annabella , Gentile Simonetta , Bagolan Pietro , Aite Lucia
Published: April 2018

Objective The objective of this study was to assess the presence of posttraumatic stress disorder (PTSD) symptoms in parental couples of newborn requiring early surgery at 6 and 12 months after birth.

Study Design A longitudinal study was set up from January 2014 to June 2015. As a measure of PTSD, we used the Italian version of the Impact of Event Scale—Revised (IES-R).

Results Thirty-four couples form the object of the study. At 6 months, half of mothers (52.9%) and fathers (44.1%) reported traumatic stress symptoms above the clinical cutoff. Percentages remained stable at 12 months. When parental gender and length of follow-up were compared with two-factor analysis of variance, none had an impact on IES-R score, nor an interaction between these factors was found. A significant correlation of IES-R total score was present within the couple both at 6 and 12 months (6 months—r: 0.6842, p < 0.0001 and 12 months—r: 0.4045, p = 0.0177).

Conclusion Having a child with a repaired malformation represents a complex prolonged stressful situation with persistent burden for both parents who are at high risk of developing PTSD symptoms.
Clinician Perceptions of the NICU Infant Experience: Is the NICU Hospitalization Traumatic?
Authors: Coughlin Mary , Sanders Marilyn , D'Agata Amy
Published: April 2018

Objective Infants cared for in a newborn intensive care unit (NICU) experience pain, parental separation, and stress that may approach toxic levels, thus are potentially traumatic. Lack of accepted clinical terminology to describe the infant experience may result in under appreciation of NICU hospitalization on infant and family outcomes. This study explored NICU clinician perceptions of the infant experience and how the terms trauma/traumatic would impact their clinical roles and practices.

Study Design Semistructured focus group interviews and thematic analysis were used to describe professionals' perceptions of the infant's experience and terminology. Focus groups were organized by professional role, including NICU leadership, physicians, nurses, and ancillary providers.

Result Six themes emerged from the qualitative analysis: at our mercy, trauma defined and redefined, and now you have broken them too, perceptions of NICU experience change over time, trauma in the NICU: whose trauma is it, and not knowing the infant and family experience.

Conclusion While recognizing potentially toxic infant stress levels, clinicians are reluctant to describe the NICU infant experience as traumatic. Hesitations relate to clinicians' personal concerns that they may be seen as agents of trauma and the impact for families if the NICU experience was described as traumatic by clinicians.
The Frequency of Type I Heterozygous Protein S and Protein C Deficiency in 141 Unrelated Young Patients with Venous Thrombosis
Authors: Gladson C L , Scharrer I , Hach V , Beck K H , Griffin J H
Published: April 2018

The frequency of heterozygous protein C and protein S deficiency, detected by measuring total plasma antigen, in a group (n = 141) of young unrelated patients (<45 years old) with venous thrombotic disease was studied and compared to that of antithrombin III, fibrinogen, and plasminogen deficiencies. Among 91 patients not receiving oral anticoagulants, six had low protein S antigen levels and one had a low protein C antigen level. Among 50 patients receiving oral anticoagulant therapy, abnormally low ratios of protein S or C to other vitamin K-dependent factors were presented by one patient for protein S and five for protein C. Thus, heterozygous Type I protein S deficiency appeared in seven of 141 patients (5%) and heterozygous Type I protein C deficiency in six of 141 patients (4%). Eleven of thirteen deficient patients had recurrent venous thrombosis. In this group of 141 patients, 1% had an identifiable fibrinogen abnormality, 2% a plasminogen abnormality, and 3% an antithrombin III deficiency. Thus, among the known plasma protein deficiencies associated with venous thrombosis, protein S and protein C. deficiencies (9%) emerge as the leading identifiable associated abnormalities.
Increased Response to Arachidonic Acid and U-46619 and Resistance to Inhibitory Prostaglandins in Patients with Chronic Myeloproliferative Disorders
Authors: Cortelazzo Sergio , Galli Monica , Castagna Donatella , Viero Piera , Gaetano Giovanni de , Barbui Tiziano
Published: April 2018

In patients with myeloproliferative disorders (MPD) a group of related diseases of the bone marrow stem cell and recurrent haemorrhagic and/or thrombotic complications, the production of aggregating prostaglandins (PGs) may be normal or slightly reduced, while PGI2 production is normal. However, MPD platelet sensitivity to antiaggregatory PGs is still unknown.

We studied the potency of PGD2, PGI2 and PGEi as inhibitors of platelet aggregation induced by threshold aggregating concentrations of arachidonic acid and U-46619-analogue of the cyclic endoperoxide PGH2 in 20 patients with MPD in comparison with healthy controls, with the aim of evaluating the sensitivity of MPD platelets to antiaggregatory PGs. In these patients platelet prostanoid metabolism was normal. However, the functional response of platelets to aggregating and antiaggregating prostanoids was shifted towards potentially increased platelet aggregation response. These findings could have a clinical relevance in view of the haemostatic and thrombotic complications so frequent in MPD.
A Plasminogen Activator Inhibitor (PAI-2) Circulates in Two Molecular Forms During Pregnancy
Authors: Booth Nuala A , Reith Alison , Bennett Bruce
Published: April 2018

During normal pregnancy maternal haemostasis alters to protect against bleeding with a rise in plasma clotting factor levels and increased inhibition of fibrinolysis. The latter is due in part to increased levels of the 48 kDa plasminogen activator inhibitor (PAI-1) present in the plasma of non-pregnant individuals. A second plasminogen activator inhibitor (PAI-2) occurs in placenta and in a cultured histiocytic lymphoma cell line. We report here the identification by SDS-PAGE and zymography of PAI-2 in plasma during normal pregnancy. PAI-2 was present in two molecular forms of about 75 and 130 kDa, which were detectable at 12 weeks gestation and which persisted in the maternal circulation for up to 7 days after delivery. These forms of PAI-2 appear to be distinct from purifed PAI-2, which has a molecular mass of 47–60 kDa and which is not normally detectable in this zymographic system, since it is sensitive to denaturants. The novel forms of PAI-2 may represent complexes or aggregates that retain activity after SDS-PAGE.
Correlation Between Fetal Weight Gain and Birth Weight with Blood Flow in the Uterine Arteries Calculated with the PixelFlux Technique
Authors: Arneberg Helene , Andersen Thea , Lorås Liv , Torp Hans , Scholbach Thomas , Eggebø Torbjørn
Published: April 2018

Introduction The aim was to investigate correlations between fetal weight gain/day and birthweight with blood flow estimates in the uterine arteries calculated with the PixelFlux technique and with measurements from TAmax. We also aimed to examine the agreement between estimates using the two methods.

Material and methods We conducted a prospective observational pilot study in pregnancy week 24–25 in women with risk pregnancies referred to the fetal medical centre at St. Olavs Hospital, Trondheim, Norway from March 2016 to June 2016. Blood flow in the uterine arteries was calculated using time-averaged peak velocity (TAmax) and the PixelFlux technique. PixelFlux is a method based on pixelwise calculation of spatially angle-corrected velocities and areas of all pixels inside a vessel during a heart cycle.

Results The mean flow calculated from PixelFlux and TAmax was 811 ml/minute and 787 ml/minute, respectively. The intra-class correlation coefficient was 0.83 (95% CI 0.72-0.90) and limits of agreement were −441 ml/minute (95% CI -558 to −324 ml/minute) to 489 ml/minute (95% CI 372 to 606 ml/minute). We observed a significant correlation between mean flow calculated from PixelFlux and birthweight (r=0.41; p<0.01) and between flow calculated from PixelFlux and weight gain/day (r=0.33; p=0.02). Calculation based on TAmax was significant correlated to birthweight (r=0.34; p=0.02), but not to weight-gain/day. Pulsatile index was not correlated to flow, birthweight or fetal weight-gain/day.

Conclusions We found significant correlations between estimated blood flow in the uterine arteries using the PixelFlux technique with fetal weight-gain/day and with birthweight. Estimates from two methods showed good agreement.