bluuebunny/crossref_metadata_2025 huggingface dataset:
Gravity-dependent change in the ‘light-from-above’ prior
Authors: Barnett-Cowan Michael , Ernst Marc O. , Bülthoff Heinrich H.
Published: October 2018

In environments where orientation is ambiguous, the visual system uses prior knowledge about lighting coming from above to recognize objects, determine which way is up, and reorient the body. Here we investigated the extent with which assumed light from above preferences are affected by body orientation and the orientation of the retina relative to gravity. We tested the ability to extract shape-from-shading with seven human male observers positioned in multiple orientations relative to gravity using a modified KUKA anthropomorphic robot arm. Observers made convex-concave judgments of a central monocularly viewed stimulus with orientations of a shading gradient consistent with being lit from one of 24 simulated illumination directions. By positioning observers in different roll-tilt orientations relative to gravity and when supine, we were able to monitor change in the light-from-above prior (the orientation at which a shaded disk appears maximally convex). The results confirm previous findings that the light-from-above prior changes with body orientation relative to gravity. Interestingly, the results varied also with retinal orientation as well as an additional component that was approximately twice the frequency of retinal orientation. We use a modelling approach to show that the data are well predicted by summing retinal orientation with cross-multiplied utricle and saccule signals of the vestibular system, yielding gravity-dependent biases in the ability to extract shape-from-shading. We conclude that priors such as light coming from above appear to be constantly updated by neural processes that monitor self-orientation to achieve optimal object recognition over moderate deviations from upright posture at the cost of poor recognition when extremely tilted relative to gravity.
Carrier-free nanodrug-based virus-surface-mimicking nanosystems for efficient drug/gene co-delivery
Authors: Sun Xuetan , Li Minghui , Yang Yang , Jia Huizhen , Liu Wenguang
Published: October 2018

A carrier-free nanodrug-based virus-surface-mimicking nanosystem with a unique rough surface shows potent combined chemo-gene therapeutic efficiency against targeted tumors.
Well-ordered mesoporous silica and bioactive glasses: promise for improved hemostasis
Authors: Pourshahrestani Sara , Kadri Nahrizul Adib , Zeimaran Ehsan , Towler Mark R.
Published: October 2018

Mesoporous silica and bioactive glasses with unique textural properties are new generations of inorganic hemostats with efficient hemostatic ability.
Nanosheets of MIL-53(Al) applied in membranes with improved CO2/N2and CO2/CH4selectivities
Authors: Perea-Cachero Adelaida , Sánchez-Laínez Javier , Zornoza Beatriz , Romero-Pascual Enrique , Téllez Carlos , Coronas Joaquín
Published: October 2018

Nanosheets obtained from MOF MIL-53(Al) applied in mixed matrix membranes with improved CO2/N2and CO2/CH4selectivities.
High dietary inflammatory index scores are associated with an elevated risk of hepatocellular carcinoma in a case–control study
Authors: Wang Xiao-Yan , Fang Ai-Ping , Chen Pei-Yan , Liao Gong-Cheng , Zhang Yao-Jun , Shivappa Nitin , Hébert James R. , Chen Yu-Ming , Zhu Hui-Lian
Published: October 2018

A higher dietary inflammatory index score, representing a more inflammatory diet, is associated with an elevated risk of hepatocellular carcinoma.
Probing the hras-1Y i-motif with small molecules
Authors: Journey Sara N. , Alden Stephanie L. , Hewitt Will M. , Peach Megan L. , Nicklaus Marc C. , Schneekloth Jr John S.
Published: October 2018

Identification of HRAS i-motif-binding small molecules.
Assessment of the targeting specificity of a fluorescent albumin conceived as a preclinical agent of the liver function
Authors: Lemdani K. , Salmon H. , Gahoual R. , Bessodes M. , Scherman D. , Houzé P. , Seguin J. , Mignet N.
Published: October 2018

A liver function imaging with lactosylated labelled human albumin is introduced. Ligand and aggregates of the products are quantified before pre-clinical demonstration is achieved in a mice model of metastatic liver from colorectal cancer.
A double-helix-structured triboelectric nanogenerator enhanced with positive charge traps for self-powered temperature sensing and smart-home control systems
Authors: Gao Lingxiao , Hu Donglin , Qi Mengke , Gong Jia , Zhou Hong , Chen Xin , Chen Junfei , Cai Jing , Wu Liangke , Hu Ning , Yang Ya , Mu Xiaojing
Published: October 2018

Triboelectric nanogenerators (TENGs) have been in spotlight for their excellent capability to drive miniature electronics.
Synthesis of perinaphthenones through rhodium-catalyzed dehydrative annulation of 1-naphthoic acids with alkynes
Authors: Fukuyama Takahide , Sugimori Taiki , Maetani Shinji , Ryu Ilhyong
Published: October 2018

A convenient method for the synthesis of perinaphthenones via rhodium-catalyzed dehydrative annulation of naphthoic acids with alkynes, which gave good to high yields of perinaphthenones, was developed.
Sulfur polymer composites as controlled-release fertilisers
Authors: Mann Maximilian , Kruger Jessica E. , Andari Firas , McErlean Joshua , Gascooke Jason R. , Smith Jessica A. , Worthington Max J. H. , McKinley Cheylan C. C. , Campbell Jonathan A. , Lewis David A. , Hasell Tom , Perkins Michael V. , Chalker Justin M.
Published: October 2018

A controlled-release fertiliser was prepared by the inverse vulcanisation of canola oil in the presence of nitrogen, phosphorous and potassium nutrients.
Rh-Catalyzed diastereoselective desymmetrization of enone tethered-cyclohexadienones via tandem arylative cyclization
Authors: Jadhav Sandip B. , Thopate Satish B. , Nanubolu Jagadeesh Babu , Chegondi Rambabu
Published: October 2018

The rhodium-catalyzed arylative cyclization of enone tethered-cyclohexadienones has been developed with high efficiency, thus providing cis-fused bicyclic enones in good yields and with excellent diastereoselectivities.
A nitrogen and boron co-doped metal-free carbon electrocatalyst for an efficient oxygen reduction reaction
Authors: Zhou Yunjie , Sun Yue , Wang Huibo , Zhu Cheng , Gao Jin , Wu Dan , Huang Hui , Liu Yang , Kang Zhenhui
Published: October 2018

A N, B co-doped carbon material exhibits excellent catalytic activity for an oxygen reduction reaction.
Effects of bovine serum albumin on light activated antimicrobial surfaces
Authors: Lourenço Cláudio , Macdonald Thomas J. , Gavriilidis Asterios , Allan Elaine , MacRobert Alexander J. , Parkin Ivan P.
Published: October 2018

In this work we demonstrate that our active surfaces still show antibacterial activity even with BSA at low light.
Semi-synthesis, structural modification and biological evaluation of 5-arylbenzofuran neolignans
Authors: Lin Ding , Wang Long , Yan Zhongzhong , Ye Jiao , Hu Aixi , Liao Hongdong , Liu Juan , Peng Junmei
Published: October 2018

5-Arylbenzofuran neolignans, a newfound class of natural products, were semi-synthesized, and a series of derivatives were designed, synthesized and evaluated for cytotoxicity.
An efficient strategy for a controllable droplet merging system for digital analysis
Authors: Qiao Yi , Fu Jiye , Yang Fang , Duan Mengqin , Huang Mengting , Tu Jing , Lu Zuhong
Published: October 2018

We present a one-to-a-cluster pairing strategy to improve the success rate of merging under fluctuation. The one-to-a-cluster method is suitable for digital analysis and droplet MDA was performed in merged droplets successfully.
Design, synthesis and biological evaluation of novel nitric oxide-donating podophyllotoxin derivatives as potential antiproliferative agents against multi-drug resistant leukemia cells
Authors: Zhang Lei , Rong Ying , Zheng Jie , Yang Chengli , Chen Yongzheng , Wang Jing , Wei Gang
Published: October 2018

ConjugateS1exhibited potential antiproliferative activity against multi-drug resistant leukemia cells.
Insight into trifluoromethylation – experimental electron density for Togni reagent I
Authors: Wang R. , Kalf I. , Englert U.
Published: October 2018

The experimentally observed electron density for the “Togni reagent” explains the interaction of the hypervalent iodine atom with a nucleophile.
An efficient and atom-economical route to N-aryl amino alcohols from primary amines
Authors: Xiao Zhen , Li Juanjuan , Yue Qiang , Zhang Qian , Li Dong
Published: October 2018

A novel method for generation of N-aryl amino alcohols from N,N-disubstituted picolinamides through reduction/ring-opening reaction with NaBH4 was developed.
Synthetic hydrogels formed by thiol–ene crosslinking of vinyl sulfone-functional poly(methyl vinyl ether-alt-maleic acid) with α,ω-dithio-polyethyleneglycol
Authors: Stewart S. A. , Coulson M. B. , Zhou C. , Burke N. A. D. , Stöver H. D. H.
Published: October 2018

3T3 cells in hydrogel formed by thiol–ene click-crosslinking of vinyl sulfone-functional PMM-CVS with PEG-dithiols.
Inhibition of N-glycosylation by tunicamycin attenuates cell–cell adhesion via impaired desmosome formation in normal human epidermal keratinocytes
Authors: Jin Seon-Pil , Chung Jin Ho
Published: October 2018

N-Glycosylation affects protein functions such as location, stability, and susceptibility to proteases. Desmosomes in keratinocytes are essential to maintain epidermal tissue integrity to protect against environmental insults. However, it is not yet known whether N-glycosylation affects desmosomal functions in primary keratinocytes. Tunicamycin is an inhibitor of N-glycosylation that has been a useful tool in glycobiology. Therefore, we investigated the effect of inhibiting N-glycosylation by tunicamycin treatment on desmosomes in primary keratinocytes. In our experiments, cell–cell adhesive strength was reduced in tunicamycin-treated primary keratinocytes. TEM showed that desmosome formation was impaired by tunicamycin. Desmogleins (Dsgs) 1 and 3, which constitute the core structure of desmosomes, were well transported to the cell–cell borders, but the amount decreased and showed an aberrant distribution at the cell borders in tunicamycin-treated keratinocytes. The stability of both desmoglein proteins was also reduced, and they were degraded through both proteasomal and lysosomal pathways, although inhibiting degradation did not restore the cell–cell adhesion. Finally, tunicamycin induced desmosomal instability, enhancing their disassembly. In conclusion, these results indicate that N-glycosylation is critical to the desmosome complex to maintain cell–cell adhesive strength in primary keratinocytes.
Novel role for cardiac myocyte-derived β-2 microglobulin in mediating cardiac fibrosis
Authors: Boyer Michael J. , Eguchi Satoru
Published: October 2018

Hypertension is a significant risk factor for the development of cardiovascular ailments, including ischemic heart disease and diastolic dysfunction. In a recent issue of Clinical Science, Li et al. [Clin. Sci. (2018) 132, 1855–1874] report that β-2 microglobulin (β2M) is a novel secreted soluble factor released by cardiac myocytes during pressure overload that promotes profibrotic gene expression in cardiac fibroblasts both in vitro and in vivo. Their study further identifies elevated β2M levels as a possible biomarker for hypertensive patients with cardiac complications. The authors propose a mechanism that mechanically stretched cardiomyocytes release soluble β2M which, through paracrine communication with cardiac fibroblasts, transactivates epidermal growth factor receptor (EGFR) to initiate acute signal transduction and up-regulate profibrotic genes, thereby promoting fibrosis. Here, we will discuss the background, significance of the study, alternative mechanisms, and future directions.
Performance evaluation of low‐density spreading multiple access
Authors: Chen Shuang , Peng Kewu , Zhang Yushu , Song Jian
Published: October 2018

Low‐density spreading multiple access (LDSMA) was proposed for supporting massive connectivity and low latency scenarios in 5th generation systems owing to its low implementation complexity. In this study, the authors analyse the performance loss of conventional LDSMA systems from two aspects: the one from low‐density spreading constellations, and the other from the mismatch between multi‐user detector and channel decoders. For the first aspect, they propose a new multi‐dimensional constellation designed via simple symbol remapping with the same constellation as in LDSMA in each dimension. And for the second aspect, newly designed Raptor‐like low‐density parity‐check codes are proposed to help retrieve the performance loss. Simulation results show that the performance of the proposed enhanced system is 1.4 dB and above superior to the conventional LDSMA system and less than 1.2 dB away from Shannon limit of Gaussian multiple access channel with symmetric users at sum rate of 1.5 and 2.25 bits per channel use.
Physical‐layer information hiding technique for cognitive radio communications in cooperative relaying systems
Authors: Ghane Amir Hossein , Harsini Jalil S.
Published: October 2018

This study presents a novel idea for information hiding at the physical layer level in order to securely transmit confidential cognitive radio data in cooperative relaying systems. Considering a cognitive radio network in which the secondary user cooperates with the primary system in relaying its data, in the proposed model, confidential cognitive information is hidden into the primary signal as a low‐power noise at a symbol level such that it would be invisible by malicious users. The new hiding algorithm can be utilised along with any standard relaying scheme as long as the primary information signal is used as the cover data without significant degradation of the primary system performance. In the presence of cognitive data hiding, both the frame error rate and throughput performance of the primary and secondary systems are derived analytically for well‐known relaying schemes such as fixed and incremental relaying protocols, when a selection‐combining rule is utilised at the primary receiver for symbol detection. Using simulation results the correctness of the proposed theoretical analysis is verified. Moreover, using numerical results the existing tradeoff between the hiding cognitive capacity of the proposed model and the performance degradation of the primary system is highlighted.
Implementation of a cattle manure biodigester for the production of gas for single family use
Authors: Mullo AS , Sanchez WE , Salazar FW , Chacha JM , Flores A.
Published: October 2018

Cattle manure has an energy potential that is unknown to farmers. In the rural areas of the city of Latacunga - Ecuador there are inconveniences for the transport of the G.L. (Liquefied Petroleum Gas). For this reason, this document shows the implementation of a biodigester to obtain biogas for domestic use at Hacienda Terán located in La Dolorosa Belisario Quevedo, the cattle manure is analyzed, obtaining 13.7% of total solids. In addition, it was established that 100 kg of mixture with the quantification of manure in a period of 12 days. In order to maintain the elevated temperature a greenhouse was built obtaining an average of 28.48°C in a time for the generation of biogas in 30 days and a minimum temperature of 22.7°C. Temperatures that are within the limits established for the generation of biogas. With these parameters. a 4.25 m3 bio-bag was dimensioned generating a production of 1.1 m3 of gas that satisfies the family use of 0.7 m3 Biogas and G.L.P. firing tests were carried out up to 80° C obtaining a calorific value of 4800 kcal. per m3.
Wind farm layout optimization to maximize total power production
Authors: Ulku I , Alabas-Uslu C
Published: October 2018

With the rapid increase in energy demand, renewable energy has been considered as an alternative energy resource around the world. A new nonlinear mathematical model is developed in the presented study and a comparison is obtained with a mathematical modelling study from the literature. The results superior according to power generation under a single wind direction. Jensen’s wake decay model is used to state multiple wake effect among the turbines. The power production is maximized in terms of the minimization of wake effects. Mathematical formulations are represented and compared with the model from the literature. The generated layouts are presented and expected power among the Introduction turbines are significantly improved.
Corporate efficiency improvement with business process automation
Authors: Waszkowski Robert , Nowicki Tadeusz , Worwa Kazimierz
Published: October 2018

The paper outlines the concept for using the Business Process Management System (BPMS) to improve processes in a rental company. It also presents a case study of the implementation of the process approach in a medium-sized company dealing in the production, rental and service of work and protective clothing. The aim of the paper is to prepare reference business process models that allow you to measure and improve all the corporate activities. The process models were prepared in accordance with the BPMN (Business Process Model and Notation). The results of the conducted research prove that well designed business processes may not only be managed but also easily enhanced and automated in a way that allows organization to improve its performance in meaningful ways. The paper describes in detail - in subsequent chapters - sales, warehouse delivery, incoming correspondence handling, and cost accounting processes. In the last chapter the system architecture is presented. The proess models are prepared in an innovative way that allows easy process automation.
Fractional order proportional-integral controller applied to a back-to-back converters
Authors: Duarte-Mermoud Manuel A. , Travieso-Torres Juan-Carlos , Crespo-Herrera Tedy A.
Published: October 2018

The use of fractional order proportional-integral (FOPI) controllers, applied to back-to-back (BTB) power converters is proposed and studied in this paper. A comparative study with the integer order proportional-integral (PI) controllers, traditionally used for this purposes, is performed and the result are discussed. The BTB power converter is connected between a permanent magnet synchronous generator (PMSG) -which is moved by a turbine placed in line with a mineral pipeline for energy recovery purposesand the electrical network, to inject the recovered energy through a voltage control into the electrical network. Simulations under normal conditions (constant torque) as well as under variable torque variations are studied, representing different possible operating scenarios for the generator.
The simulation of the changes in traffic solutions in states of crisis
Authors: Viskup Pavel , Vichova Katerina
Published: October 2018

The aim of the logistics is to ensure that the right things and the right time are in the right place, all with minimum cost. Today, many software is used to solve the distribution. One of them is software PTV Vissim. This software explains individual microscopic simulations. The extensive analytical tools acquired in PTV Vissim make it a level tool for transport planning and traffic optimization. Using this system, you can simulate the existing transport system and then make changes. Due to the ever-increasing number of vehicles in operation and the increasing intensity of cars, urban traffic is deteriorating. The aim of the article is to design a new transport system in the city of Uherské Hradiště in connection with the arrival at the hospital in the event of the states of crisis. Twenty years ago, the town of Uherské Hradiště was hit by enormous floods that cut off the hospital from access. No correction has been made yet. The current proposals for solutions mainly for city development. The authors consider access to the hospital as a critical element of the service to the population. The development of the city is taken as a secondary task. The software is simulating the current state and then the proposed changes. The paper is divided into four parts. Introduction to the problem, determination of limiting factors, simulation using PTV Vissim software and conclusion.
Preparation of experimental measurements using a firearm
Authors: Gracla Michal , Pavlík Lukáš
Published: October 2018

In this paper, we focus on one specific firearm, which is air gun, and further on preparation of experimental measurements. In the introduction, it is discussed what other science teams investigate and why. Moreover, it is mentioned a ballistics protection of an individual and, consequently, the justification of why other science teams rather use other firearms than on which we focus. Then, we describe used aids for given experimental measurements. Finally, descriptions and results from our experimental measurements with above mentioned aids are discussed.
The role of optimal perturbations in improvement of stabil- ity and forecasting capacity of adaptive filter for high di- mensional systems
Authors: Hoang Hong Son , Baraille Rémy
Published: October 2018

This paper is devoted to an optimal perturbation (OP) which allows to qualify a capacity of the dynamical system to predict more or less correctly the system behaviour in the future. The different types of OPs, deterministic, stochastic, OP in an invariant subspace, are introduced. The theoretical results on the optimality of the introduced OPs are presented. The different simple and efficient numerical algorithms for computation of the OPs are outlined which constitute a basis for implementation of a stable adaptive filter in a very high dimensional environment.
Nano-indentation test of electron beam irradiated polyamide 11
Authors: Ovsik Martin , Hylova Lenka , Hudec Ivan , Dockal Adam
Published: October 2018

This article deals with the influence of electron beam radiation on nano-mechanical properties and the structure of polyamide 11. Crosslinking of polymers is a process, during which macromolecular chains start to connect to each other and the spatial network creates in the structure. During the action of the ionizing radiation two actions can occur: crosslinking and scission of macromolecules – degradation. Both these processes run parallel. Using the crosslinking technology the standard and construction polymer can obtain the more “expensive” high-tech polymeric materials properties and thus replace these materials in many applications. Tested material was irradiated by different doses of beta radiation (33, 66 and 99 kGy). The nano-mechanical properties were measured using DSI method, which fluently records the change of the indentation in time. From this dependence it is possible to determine nano-mechanical properties such as indentation hardness, indentation modulus etc. During results consideration it is obvious that irradiation acts on each polymer differently, but always when the optimal dose was found, nano-mechanical properties increased up to 34 %. The changes of nano-mechanical properties were confirmed by structural measurement when the change of hardness and modulus corresponded to gel content.
The Effect of Injection Molding on Physical Properties of EPDM Rubber
Authors: Skrobak Adam , Senkerik Vojtech , Janostik Vaclav
Published: October 2018

The paper a part of research aimed at the alternative of preparing test samples by injection molding. Such an alternative could bring more objective results in the field of testing samples produced in the same technology. The research is aimed at changing the preparation of rubber testing samples - replacing the standard method according to ISO 23529 by the injection method, especially with the use of rubber compounds for injection molding. This article compares and evaluates the selected physical properties (tensile strength and tear strength) of EPDM rubber injection molded samples with samples prepared by the standard method - cutting out of a compression molded plate. The results have shown that using the injection molded samples we will achieve more objective results mainly to determine the tear strength. In the case of tensile strength, the differences are not so significant.
Comparison of predictive control using Self-Organizing Migrating Algorithm and MATLAB fmincon function
Authors: Macků Lubomír , Sámek David
Published: October 2018

The aim of this paper is to evaluate the usability of the self-organizing migrating algorithm (SOMA) in a nonlinear system predictive control area. The model predictive control is based on an objective function minimization. Two approaches to model predictive control applied on a nonlinear system are studied here. Firstly, the SOMA was used to minimize the objective function, secondly, the fmicon function included in the MATLAB optimization toolbox was used for the same. The nonlinear system simulated here is an exothermic semi-batch reactor mathematical model based on a real chemical exothermic process. Also the input data used here to simulate the process were obtained from the same real process. Results obtained by the simulation means were than evaluated using suitable criterion which was defined for that purpose and discussed.
Identification of wavelengths from the visible spectrum by means of Arduino for the generation of a knowledge base managed by PROLOG
Authors: Ts’zul Pinedo Arriaga O. , Arraiga Carlos D. Pinedo , Alvarado Eduardo Herrera , Varela David Tinoco
Published: October 2018

PROLOG is a programming language widely used in the generation of expert and intelligent systems, generally limited to data that is entered directly by a user in the form of software, having little or no interaction with data that is captured directly from a physical environment. This paper presents an implementation of an interface that detects the wavelengths of the visible spectrum, that is, identifies colors, colors that are stored in a knowledge base and then managed by PROLOG. This interface consists of two parts, software and hardware. The hardware is designed by means of the Arduino UNO development board, where a TCS3200 sensor is used. For the development of the software, two tools have been used, on the one hand, the standard programming of the Arduino IDE terminal has been used to manage the inputs and outputs of the Arduino board, and on the other hand, a data management system has been generated, in which PROLOG manages all the data obtained from hardware. This scheme seeks to generate color classifications in a dynamic and intelligent way in the future.

The proposed system has the advantage that it is highly economical, easy to perform, uses the logical paradigm of programming, and opens the way to the design of intelligent systems managed by PROLOG from a monitoring of physical variables.
Queue-based quantitative approach for border guard operational modelling. Constructive simulator models reflecting border crossings and blockade elements.
Authors: Chmielewski Mariusz , Kukiełka Marcin
Published: October 2018

The paper presents selected modelling techniques utilised in constructive simulation environment SymSG Border Tactics which provides tactical training capabilities for Polish Border Guard. Operational responsibilities of BG include policing as well as reconnaissance, transport and traffic control in near border areas. Modelling of such operations require multiresolution approach, as many of operational elements can be modelled as aggregated entities but majority of active simulation elements need to be implemented as individual simulation objects. The behavioural models reflecting BG, perpetrators or society have been modelled as agents and more complex operational elements (e.g. road blockades, control points during temporary restoration of the border control, border crossing) are modelled using queue system. Such approach delivers flexibility of system modelling but most of all is tuned to the calibration parameters provided by the BG analysts. Therefore, developed modelling approach provides flexibility in customisation of the model (simulation element) based on the user and scenario preferences. Constructive simulator has been designed to support brief (up to 4h) live exercises and reflect training of border guard outpost operational tasks. Finally the paper describes architectural solutions developed to support modelling approaches and required functionalities for simulation execution, after-action-review mechanism and remote simulation access.
The use of network models in the inspection of objects of industrial installations.
Authors: Napiórkowski Jarosław
Published: October 2018

Today’s industrial installations consist of many interconnected elements. The source of a threat or failure of an installation can be not only damage to a single element (device), but also the interaction between individual elements of such a system. In order for the installation to meet safety requirements, the risk of failure should be properly assessed and appropriate prevention systems should be selected and the effects of its occurrence reduced. In order to achieve this, many care for the safety of such structures, inspection organizations carry out risk analysis and risk assessment with various methods. Due to the large number of elements that comprise installations of this class, the problem is to find cleary, uncomplicated and easy to implemented (cheap and low time-consuming) way to identify the relationship between its various elements. Possibility of specify and visualize relationships between elements of installations, their vulnerabilities, safeguards and the effects of threats is an unquestionable advantage of the network models in case of risk assessment carried out on a model built in this way. They allow network analysis based on centrality analysis. Relatively simple method of analysis of these networks. This article discusses few from many areas of application the network model in risk analysis in technical structures.
Electro-mechanical analysis of a multilayer piezoelectric cantilever energy harvester upon harmonic vibrations
Authors: Machů Zdeněk , Majer Zdeněk , Ševeček Oldřich , Štegnerová Kateřina , Hadaš Zdeněk
Published: October 2018

This paper addresses an important issue of the individual layer thickness influence in a multilayer piezo composite on electro-mechanical energy conversion. The use of energy harvesting systems seems to be very promising for applications such as ultra-low power electronics, sensors and wireless communication. The energy converters are often disabled due to a failure of the piezo layer caused by an excessive deformation/stresses occurring upon the operation. It is thus desirable to increase both reliability and efficiency of the electromechanical conversion as compared to standard concepts. The proposed model of the piezoelectric vibration energy harvester is based on a multilayer beam design with active piezo and protective ceramic layers. This paper presents results of a comparative study of an analytical and numerical approach used for the electro-mechanical simulations of the multilayer energy harvesting systems. Development of the functional analytical model is crucial for the further optimization of new (smart material based) energy harvesting systems, since it provides much faster response than the numerical model.
Transmitting data over the network using an OPC server
Authors: Niculescu Filip , Savescu Adrian , Mitru Andrei
Published: October 2018

The paper presents the way of transmitting the parameters of operation of a remote installation in a centralized control center of a company. The distance between the computers that collect the data and the data monitoring center is hundreds of kilometers. Data has to be transmitted through multiple physical environments and through multiple networks. This transmission channel must be very stable and secure against external threats to the company network. The monitored installation is comprised of 10 compressors each having a local control cabinet and transmitting data to monitoring computers in the control room. Centralized data in these computers are sent to the beneficiary. This transmission uses a tunneling solution provided by a company together with an OPC Server realized by using that function of the software in which the monitoring application is developed on the industrial computers in the control room of the respective installation. The results obtained in remote data transmission were very good. In conclusion, the configuration and software solutions adopted proved reliability and stability in operation.
Data Recovery through Modulation Identification in Dense Wireless Networks
Authors: Kar Anup , Misra Aradhana , Sarma Kandarpa Kumar , Mastorakis Nikos E.
Published: October 2018

With rise in device complexity and transmission rates, reliability in data recovery has become another critical issue requiring costly and computationally demanding mechanism. The popularity of artificial intelligence (AI) and its ubiquitousness have established the usefulness of design of data recovery schemes where device level complexity is less. Lower device complexity is being ensured by the use of AI driven data recovery. In this work, we focus on the design of such a mechanism where traditional process are replaced by a neuro-computing structure. The advantage is lower levels of device complexity but incorporation of a training latency. Experimental results have established the reliability of the proposed system.
Implementation of Galois Field for Application in Wireless Communication Channels
Authors: Sarma Dikshita , Sarma Manash Pratim , Sarma Kandarpa Kumar , Mastorakis Nikos E.
Published: October 2018

This paper discusses the implementation of Galois Field based codes for application in wireless communication channel. It discusses the use of Galois Fields outlining the basic performance of a digital communication system in terms of BER curves. The work further discusses the performance of these codes in Gaussian and Rayleigh Fading Channels.
Mode-frequency analysis of doubly curved composite laminated shell
Authors: Kormaníková Eva
Published: October 2018

The paper deals with a numerical approach of mode-frequency analysis of a simply-supported laminated doubly curved shell. For laminated shell the first-order shear deformation theory is capable of accurately predicting the shell behaviour. Linear layered structural shell elements are used in FEM analysis. The numerical analysis is conducted to determine the effect of symmetry with respect to mid-plane, fibre orientation and width-to-thickness ratio to change of resonant frequencies in the case of angle-ply and crossply laminate.
Risk analysis with the usage of IT system TURAWA
Authors: Woch Marta , Tomaszewska Justyna , Wójcik Jarosław , Zieja Mariusz
Published: October 2018

In the time of globalization and the continuous travelling of people between different parts of the world, air transportation is becoming one of the most important modes of transport. Nevertheless, it is crucial to continuously improve the level of safety and reduce the absolute number of accidents and their victims. The risk analysis with the usage of IT system TURAWA, which was developed to collect the aircraft’s accidents informations, has been discussed in the presented article. Calculation of risk is based on the data sample collected in the operation process. The implementation of the risk of potential failure event in TURAWA is presented and compared with the prediction of such situation by the decision trees. It has been concluded that models should be developed, which cause in the elimination of the human factor from the decision making chain.
Automated test generation for optimizing compilers with OpenMP support
Authors: Pankratov Svyatoslav
Published: October 2018

The correctness of the compiler is a necessary requirement for the correct operation of the software compiled by it. Therefore, the most important stage in the development of the compiler is verification. Recent widespread of multi-core processors and graphics core integrated to CPU emphasized the problem of the transition from single-threaded to multi-threaded computing and re-usage of graphics core for general purpose heterogeneous parallel computations in particular. In this paper, we are presenting an approach to automate test creation for the verification of the compiler with OpenMP support, based on a generator that uses grammars to generate syntactically correct executable tests.
Morpho-Lexicon for standard Moroccan Amazigh
Authors: Ataa Allah Fadoua , Boulaknadel Siham
Published: October 2018

Standardized resources are key components for the development of applications related to human language technology. Therefore, it is important to adopt it for designing lexical resources, especially for less commonly resourced languages such Amazigh. This language is spoken by many North African communities, including Morocco. Due to historical, geographical and sociolinguistic factors, the Amazigh language is characterized by the proliferation of many intervarieties, which has led to a complex morphology. This latter poses significant challenge to NLP tasks, especially that Amazigh language belongs to the Afro-Asiatic language (Hamito-Semitic) family, known by its non-concatenative morphology based on root and pattern.

Face to the scarcity of Amazigh language resources dealing with morphemes encoding, orthographic changes, and morphotactic variations, the elaboration of a standardized lexical resource will certainly ensure a large exchange and exploitation. In this context, this paper describes ongoing work for elaborating a morphological lexicon, based on inflected forms, for the standard Moroccan Amazigh language.
Comparison of accuracy of forecasting methods of convective precipitation
Authors: Šaur David , Pavlík Lukáš
Published: October 2018

This article is focused on the comparison of the accuracy of quantitative, numerical, statistical and nowcasting forecasting methods of convective precipitation including three flood events that occurred in the Zlin region in the years 2015 - 2017. Quantitative prediction is applied to the Algorithm of Storm Prediction for outputs “The probability of convective precipitation and The statistical forecast of convective precipitation”. The quantitative prediction of the probability of convective precipitation is primarily compared with the precipitation forecasts calculated by publicly available NWP models; secondary to statistical and nowcasting predictions. The statistical prediction is computed on the historical selection criteria and is intended as a complementary prediction to the first algorithm output. The nowcasting prediction operates with radar precipitation measurements, specifically with X-band meteorological radar outputs of the Zlín Region. Compared forecasting methods are used for the purposes of verification and configuration prediction parameters for accuracy increase of algorithm outputs.
A system for band saw wheel wear measurement
Authors: Sysala Tomas , Stuchlík Karel , Neumann Petr
Published: October 2018

The article describes the design and application of a new method for the band saw parts wear grade measurement. The introduction mentiones the individual parts of a band saw in general, and it states the current method of band pass wheels wear measurement. The nowadays measurement method analysis and innovative method design follows. The article also contains the design realization and related software description. The practical measurements data samples are present together with design benefits in the Data Analysisi Section.
Convolutional Noise PDF at the Convergence State of a Blind Adaptive Equalizer
Authors: Pinchas Monika
Published: October 2018

In the literature, the convolutional noise obtained at the output of a blind adaptive equalizer, is often modeled as a Gaussian process during the latter stages of the deconvolution process where the process is close to optimality. However, up to now, no strong mathematical basis was given supporting this phenomenon. Furthermore, no closed-form or closed-form approximated expression is given that shows what are the constraints on the system’s parameters (equalizer’s tap-length, input signal statistics, channel power, chosen equalization method and step-size parameter) for which the assumption of a Gaussian model for the convolutional noise holds. In this paper, we consider the two independent quadrature carrier input case and type of blind adaptive equalizers where the error that is fed into the adaptive mechanism which updates the equalizer’s taps can be expressed as a polynomial function of the equalized output up to order three. We show based on strong mathematical basis that the convolutional noise pdf at the latter stages of the deconvolution process where the process is close to optimality, is approximately Gaussian if complying on some constraints depending on the step-size parameter, input constellation statistics, channel power, chosen equalization method and equalizer’s tap-length. Simulation results confirm our findings.
Improvement the temperature signal filtering in lock-in thermography
Authors: Stoynova Anna , Bonev Borislav
Published: October 2018

At present, lock-in thermography is widely used non-destructive method for defects detection. The informative images in lock-in thermography (e.g. phasegram) are obtained after temperature signal filtering of the raw data. The postprocessing in lock-in thermography is more complex than in other active thermography methods and very important for defects detectability. In some cases the standard postprocessing can significantly decrease the quality of the temperature signal filtering, respectively decreasing defects detectability, although the parameters of lock-in thermography measurement are selected correctly. The aim of the paper is to study the quality of temperature signal filtering in lock-in thermography depending on used offline postprocessing. For this reason, a methodology based on modelling and measurements of temperature signals from infrared thermography for determination of cases, in which the temperature signal filtering quality is decreased significantly, is used and corresponded methods for correction are proposed. The results from modelling and from real lock-in thermography measurements shows that by using of the proposed methods can be avoided decreasing of temperature signal filtering quality due to improper postprocessing. In addition, the proposed methods allow same defect detectability at lower energy, induced in tested sample, which is very useful for materials that are not sufficiently heat-resistant.
Studies of 4-rotor unmanned aerial vehicle UAV in the field of control system
Authors: Setlak Lucjan , Kowalik Rafał
Published: October 2018

The key goal of this work was to develop a functional mathematical model of a 4-rotor UAV, including regulatory apparatus and identification of its parameters. The functionality of a quadrocopter traffic control has been reduced to solving differential equations that define the motion and dynamics of an unmanned aerial vehicle. It should be noted that the synthesis of the quadrocopter control system is not an easy task, due to the non-linear nature of the dynamics of this object and its structural instability. Therefore, in this article the tested object UAV was accepted as a physical model, which may cause potential material damage resulting from damage to the device as well as other elements that are located in its immediate surroundings. In addition, the article discusses the problem of improving the quality of the estimation rate of climb of unmanned aircraft of vertical takeoff and landing UAV, this problem was considered for the object in the low-ceiling range, i.e. in the range of 0-6 m, so the issue concerns autonomous take-off and landing. For the presentation of the results, the 4-rotor UAV was used, with the use of a proportional-integral-derivative PID controller in the context of the control system. The obtained results were supported by research and analysis of real results - the discussed algorithm was implemented in the 4-rotor UAV driver.
A numerical code for underwater noise propagation
Authors: Faggio Antonio , Viscardi Massimo , Coppola Tommaso , Rizzuto Enrico
Published: October 2018

A growing attention has been recently devoted to the impact of the underwater noise field generated by shipping activities on the marine fauna. While in international treaties and conventions this problem is now well treated, from a technical point of view the quantification of the impact of underwater noise emissions from the ship is not yet consolidated.

The program created allows the user to identify the sound rays generated by source and, between these, to find the beam nearest a receiver calculating the Trasmission Loss (TL). The user enters as input data the source position, the Sound Pressure Level (SPL) of the source, the depth of the backdrop, sound velocity profile, thickness of the layers in which the water column is divided, salinity, temperature and pH of sea water and the frequency of emission of the source to characterize the propagation environment. Through the Ray Tracing Theory, a technique of optical geometry that is based on the calculation of the path made by light the rays are shown on the screen. Then the rays closest to the receiver are identified and the program calculates the sound loss, divided into Geometrical Loss (due to distance between the source and the receiver), Dissipation Loss (due to the characteristics of the propagation environment) and Reflection Loss (due to the surfaces that delimit the field).In output the program will show the propagation field of the Sound Pressure Level through which in the future it will be possible to identify the emission limits to protect the marine fauna.
A Comparative Analysis of Motifs from Minoan and Hungarian Folk Art
Authors: Revesz Peter Z.
Published: October 2018

This paper presents a similarity measure for motives. The similarity measure is applied to several ceramic and metal artifacts that contain spiral motives. The similarity measure shows a particularly strong similarity between some Minoan and Hungarian ceramics.
Fotografie im Handwerksunterricht – Bewusst beobachten
Authors: Sauerwein Marc
Published: October 2018

Ein Selfie für soziale Netzwerke, Urlaubsfotos oder das Festhalten alltäglicher Situationen – Bilder sind überall. Ergotherapieschüler aus Mainz beschäftigten sich im Handwerksunterricht mit Fotografie und inwiefern sie einen Nutzen in der Ergotherapie haben kann. Ein Dozent berichtet.
Association of Monocarboxylate Transporter-1 (MCT1) A1470T Polymorphism (rs1049434) with Forward Football Player Status.
Authors: Cięszczyk Paweł , Calò Carla Maria , Massidda Myosotis , Mendez-Villanueva Alberto , Ginevičienė Valentina , Proia Patrizia , Drozdovska Svitlana , Dosenko Victor , Scorcu Marco , Stula Aleksander , Sawczuk Marek
Published: October 2018

The aim of this study was to investigate the association between the MCT1 (monocarboxylate transporter 1) A1470T polymorphism and positional roles in a large cohort of professional football players from five different countries. We compared genotype distributions of the MCT1 A1470T polymorphism between football players (n=694) and non-athlete controls (n=781) from Italy, Poland, Lithuania, Ukraine and Malta, and we analyzed the MCT1 genotype distributions with respect to the players’ positions in the field (e. g. forwards, midfielders, defenders and goalkeepers). Genomic DNA was extracted from either buccal epithelium or peripheral blood using a standard protocol. In the pooled cohort of Italian, Polish, Lithuanian and Ukrainian football players, forwards (n=148) were more likely than controls (n=781) to possess the A allele (χ2=7.067, p=0.029, FDR q value 0.116), with a greater likelihood of having the AA genotype compared with the TT genotype (OR=1.97; C.I.=1.07-3.64; p=0.021, FDR q value 0.086). The MCT1 AA genotype was significantly more frequent in forwards then in controls. Further studies are needed to confirm these findings in other professional football player cohorts.
Wo wird ethisches Handeln sichtbar?
Authors: Kutzer Claudia , Rohde Katrin S.
Published: October 2018

Ethische Bezüge sind bewusst oder unbewusst Bestandteil des pflegerischen Handelns. Dies beinhaltet eine Betrachtung mit allen physischen, psychischen und
sozialen Facetten. Pflege bezieht sich nicht nur auf Krankheit, sondern auf den Menschen als Ganzes.