bluuebunny/crossref_metadata_2025 huggingface dataset:
γ-Ray dose dependent conductivity of MoS2nanomaterials at different temperatures
Authors: He Yupu , Xiang Xia , Wu Zhonglin , Li Menglu , Deng Hongxiang , Zhang Jihua , Yang Guixia , Chen Hua , Yuan Yonggang , Zu Xiaotao
Published: October 2019

The conductivity of γ-ray irradiated MoS2nanomaterials depends on the service temperature. The proper γ-ray irradiation dose can significantly improve the conductivity of MoS2when used at room temperature.
Magnetic property improvement and crystallization tuning of cluster-beam-deposition-fabricated Sm–Co-X nanoparticles via bias voltage
Authors: Li Nannan , Abbas Nadeem , Li Yun , Li Yujin , Liu J. Ping , Wang Fang , Du Huijing , Zhang Jian
Published: October 2019

The bias voltage can significantly improve the magnetic properties of nanoparticles fabricated by cluster beam deposition. It may also provide a new and effective way for ordering the amorphous/disordered nanoparticles without shape and size change.
Average and local structures of κ-phase CeZrO4 crystals by neutron powder diffraction
Authors: Matsukawa Takeshi , Honda Takashi , Ohshita Hidetoshi , Otomo Toshiya , Ishigaki Toru
Published: October 2019

The average and local structures of κ-phase CeZrO4 (κ-CZ) were evaluated by neutron powder diffraction measurements.
Factors influencing optical uniformity of YAG single-crystal fiber grown by micro-pulling-down technology
Authors: Wu Baiyi , Nie Hongkun , Wang Anye , Zhang Jian , Jia Zhitai , Zhang Baitao , Fu Xiuwei , Hu Qiangqiang , He Jingliang , Tao Xutang
Published: October 2019

This work reports on the growth of Nd:YAG single crystal fibers by the micro-pulling down (μ-PD) method, and factors of optical uniformity and laser operation have been discussed.
Ab initioaccelerated molecular dynamics study of the hydride ligands in the ruthenium complex: Ru(H2)2H2(P(C5H9)3)2
Authors: Lauricella Marco , Chiodo Letizia , Ciccotti Giovanni , Albinati Alberto
Published: October 2019

The dihydrogen complex Ru(H2)2H2(P(C5H9)3)2has been investigated,via ab initioaccelerated molecular dynamics, to elucidate the H ligands dynamics and possible reaction paths for H2/H exchange.
Electrochemical CO2reduction on Cu and Au electrodes studied usingin situsum frequency generation spectroscopy
Authors: Huang-fu Zhi-Chao , Song Qian-Tong , He Yu-Han , Wang Jing-Jing , Ye Jin-Yu , Zhou Zhi-You , Sun Shi-Gang , Wang Zhao-Hui
Published: October 2019

As an important pathway for energy storage and a key reaction in the carbon cycle, the CO2electrochemical reduction reaction has recently gained significant interest.
What governs the nature of fouling in forward osmosis (FO) and reverse osmosis (RO)? A molecular dynamics study
Authors: Tiwari Shivam , Gogoi Abhijit , Reddy K. Anki
Published: October 2019

Difference in the distribution of water molecules around the protein leads to different fouling structures in FO and RO.
Revised values for the X23 benchmark set of molecular crystals
Authors: Dolgonos Grygoriy A. , Hoja Johannes , Boese A. Daniel
Published: October 2019

A revised reference value set for molecular crystals: X23b; new cell volumes and lattice energies including volumetric expansion due to zero-point energy and thermal effects.
Reactivity patterns of vanadium(iv/v)-oxo complexes with olefins in the presence of peroxides: a computational study
Authors: Mubarak M. Qadri E. , de Visser Sam P.
Published: October 2019

Density functional theory calculations on vanadium-oxo and -peroxo porphyrins are reported and show these systems to be versatile oxidants.
Linear-shaped LnIII4 and LnIII6 clusters constructed by a polydentate Schiff base ligand and a β-diketone co-ligand: structures, fluorescence properties, magnetic refrigeration and single-molecule magnet behavior
Authors: Wang Wen-Min , He Li-Yuan , Wang Xin-Xin , Shi Ying , Wu Zhi-Lei , Cui Jian-Zhong
Published: October 2019

A series of linear-shaped LnIII4 and LnIII6 clusters were synthesized. The structures, fluorescence properties and magnetic properties have been deeply studied.
Versatile coordination and C–H activation of a multi-donor phosphinoferrocene carboxamide ligand in Pd(ii) complexes
Authors: Horký Filip , Škoch Karel , Císařová Ivana , Štěpnička Petr
Published: October 2019

Pd(ii) complexes with P-monodentate phosphinoferrocene carboxamide can be reversibly converted into compounds featuring P,O- or P,N-chelate rings of various sizes and even into an orthopalladated complex.
Synthesis of treprostinil: key Claisen rearrangement and catalytic Pauson–Khand reactions in continuous flow
Authors: García-Lacuna Jorge , Domínguez Gema , Blanco-Urgoiti Jaime , Pérez-Castells Javier
Published: October 2019

Treprostinil is prepared in 12 linear steps using a plug flow reactor for the key Claisen rearrangement and Pauson–Khand reactions.
Fast, selective and metal-free ring-opening polymerization to synthesize polycarbonate/polyester copolymers with high incorporation of ethylene carbonate using an organocatalytic phosphazene base
Authors: Wei Chuanzhi , Kou Xinhui , Liu Shaofeng , Li Zhibo
Published: October 2019

Polycarbonate/polyester copolymers with high incorporation of EC were realized by a fast and selective process using a metal-free catalyst.
Wetting a superomniphobic porous system
Authors: Cimadoro J. , Ribba L. , Goyanes S. , Cerda E.
Published: October 2019

We study experimentally and theoretically the critical pressure needed to move a liquid through a network of pores and show that, for small aperture size, wetting and leaking are typical first-order transitions, with a singular behavior at the omniphobic/omniphilic limit.
Effects of the MAML2 genetic variants in glioma susceptibility and prognosis
Authors: Zhang Ming , Zhao Yonglin , Zhao Junjie , Huang Tingqin , Guo Xiaoye , Ma Xudong , Wu Yuan
Published: October 2019

Background: Abnormal expression of the mastermind-like transcriptional co-activator 2 (MAML2) gene is oncogenic in several human cancers, including glioma. However, the relevance of MAML2 variants with glioma remains unknown. We aimed to investigate the role of MAML2 polymorphisms in glioma risk and prognosis among the Chinese Han population. Methods: Seven MAML2 single-nucleotide polymorphisms (SNPs) were genotyped using Agena MassARRAY system among 575 patients with glioma and 500 age- and gender-matched healthy controls. Logistic regression was used to estimate the association between MAML2 polymorphisms and glioma risk by calculating odds ratios (ORs) and 95% confidence intervals (CI). Kaplan–Meier survival analysis and univariate, multivariate Cox proportional hazard regression analyses for hazard ratios (HRs) and 95% CIs were performed to evaluate the contribution of MAML2 polymorphisms to glioma prognosis. Results:MAML2 rs7938889 and rs485842 polymorphisms were associated with the reduced risk of glioma (OR = 0.69, P=0.023; and OR = 0.81, P=0.032, respectively). Rs7115578 polymorphism had a lower susceptibility to glioma in males (OR = 0.68, P=0.034), while rs4598633 variant with a higher risk in females (OR = 1.66, P=0.016). Additionally, rs7115578 AG genotype represented a poorer prognosis of glioma (HR = 1.24, P=0.033) and astrocytoma (log-rank P=0.037, HR = 1.31, P=0.036). Furthermore, rs11021499 polymorphism had lower overall survival (OS) and progression-free survival (PFS) in patients with low-grade glioma. Conclusion: We provided some novel data suggesting MAML2 polymorphisms might contribute to glioma risk and prognosis. Future studies are warranted to validate these findings and characterize mechanisms underlying these associations.
Charting nearby dust clouds usingGaiadata only
Authors: Leike R. H. , Enßlin T. A.
Published: October 2019

Aims.Highly resolved maps of the local Galactic dust are an important ingredient for sky emission models. Over almost the whole electromagnetic spectrum one can see imprints of dust, many of which originate from dust clouds within 300 pc. Having a detailed 3D reconstruction of these local dust clouds enables detailed studies, helps to quantify the impact on other observables, and is a necessary milestone of larger reconstructions, as every sightline for more distant objects will pass through the local dust.

Methods.To infer the dust density we use parallax and extinction estimates published by theGaiacollaboration in their second data release (DR2). We model the dust as a log-normal process using a hierarchical Bayesian model. We also nonparametrically infer the kernel of the log-normal process, which corresponds to the physical spatial correlation power spectrum of the log-density.

Results.Using only data fromGaiaDR2, we reconstruct the 3D dust density and its spatial correlation spectrum in a 600 pc cube centered on the Sun. We report a spectral index of the logarithmic dust density of 3.1 on Fourier scales with wavelengths between 2 and 125 pc. The resulting 3D dust map as well as the power spectrum and posterior samples are publicly available for download.
Scattering, absorption, and thermal emission by large cometary dust particles: Synoptic numerical solution
Authors: Markkanen Johannes , Agarwal Jessica
Published: October 2019

Context.Remote light scattering and thermal infrared observations provide clues about the physical properties of cometary and interplanetary dust particles. Identifying these properties will lead to a better understanding of the formation and evolution of the Solar System.

Aims.We present a numerical solution for the radiative and conductive heat transport in a random particulate medium enclosed by an arbitrarily shaped surface. The method will be applied to study thermal properties of cometary dust particles.

Methods.The recently introduced incoherent Monte Carlo radiative transfer method developed for scattering, absorption, and propagation of electromagnetic waves in dense discrete random media is extended for radiative heat transfer and thermal emission. The solution is coupled with the conductive Fourier transport equation that is solved with the finite-element method.

Results.The proposed method allows the synoptic analysis of light scattering and thermal emission by large cometary dust particles consisting of submicrometer-sized grains. In particular, we show that these particles can sustain significant temperature gradients resulting in the superheating factor phase function observed for the coma of comet 67P/Churyumov–Gerasimenko.
Precise radial velocities of giant stars
Authors: Luque R. , Trifonov T. , Reffert S. , Quirrenbach A. , Lee M. H. , Albrecht S. , Fredslund Andersen M. , Antoci V. , Grundahl F. , Schwab C. , Wolthoff V.
Published: October 2019

We report the discovery of a second planet orbiting the K giant star 7 CMa based on 166 high-precision radial velocities obtained with Lick, HARPS, UCLES, and SONG. The periodogram analysis reveals two periodic signals of approximately 745 and 980 d, associated with planetary companions. A double-Keplerian orbital fit of the data reveals two Jupiter-like planets with minimum masses mb sini ~ 1.9 MJ and mc sini ~ 0.9 MJ, orbiting at semimajor axes of ab ~ 1.75 au and ac ~ 2.15 au, respectively. Given the small orbital separation and the large minimum masses of the planets, close encounters may occur within the time baseline of the observations; thus, a more accurate N-body dynamical modeling of the available data is performed. The dynamical best-fit solution leads to collision of the planets and we explore the long-term stable configuration of the system in a Bayesian framework, confirming that 13% of the posterior samples are stable for at least 10 Myr. The result from the stability analysis indicates that the two planets are trapped in a low-eccentricity 4:3 mean motion resonance. This is only the third discovered system to be inside a 4:3 resonance, making this discovery very valuable for planet formation and orbital evolution models.
A study of the Overburden dumps flora at Chernogorsky quarry
Authors: Ankipovich Eugene , Lagunova Elena , Barsukova Irina , Katanov Tatiana Leonova
Published: October 2019

Species composition of phytocoenoses of overburden dumps at Chernogorsky quarry has been investigated. Systematic, chorological, environmental and biomorphological analysis of flora has been carried out. It has been found that the quarry flora includes 47 species of higher vascular plants that are related to 35 genera and 16 families. 97.9 % are metasperms. Asteraceae and Poaceae are the largest families. Species with Holarctic areas prevail in the chorological structure (36.2 %). In terms of soil moisture all species can be subdivided into 3 groups: mesophytes (40.4 %), mesoxerophytes (36.2 %) and xerophytes (23.4 %). The leading role in the researched flora belongs to herbaceous polycarpous plants (57.4 %), which is characteristic of all the boreal region flora. 1 species listed in the Red Books of the Republic of Khakassia was discovered in the overburden dumps (Nitraria sibirica Pallas) and 6 species which have been noted for the first time for the flora of Khakassia.
Taxonomic structure of local floras in Sidinskiy and Pribaitakskiy steppes (Krasnoyarsk region)
Authors: Antipova Ekaterina , Enulenko Olga
Published: October 2019

Sidinskiy and Pribaitakskiy steppes are the part of the Minusinsk province of the Altai-Sayan mountain country. On the territory of steppes 12 local floras (LF) were marked and examined using the same method. Studies were carried out according to the recommendations of A.I. Tolmachev (1931): identification of different types of ecotypes of LF, the full species composition of ecotypes (flora inventory), tracking the completeness of detection in LF. In the Sidinskiy steppe the number of families in the LF varies from 25 (Syida) to 43 (v. Alha), in the Pribaitakskiy steppe there is a big difference in the number of families in the LF from 31 (Krasnoyarsk reservoir, Tuba) to 65 (Mayak, Idra). The leading families in the local steppe flora are Asteraceae, Poaceae, Fabaceae. The Fabaceae family ranks third in the top of ten families in 50 % of LF, determining the type of flora as the Mediterranean-Central Asian (Fabaceae-type). Different types of LF allow to determine the type of all steppe flora as mixed, combining features of boreal (Asteraceae-Poaceae- type) and steppes flora (Fabaceae-type) with close ties with Central European floras (Rosaceae-type). 4 distinct levels of species richness are determined: 1 − 496-544; 2 − 408-413; 3 − 319-374; 4 − 279-298 species.
Some features of rare and endangered plant species introduction
Authors: Elisafenko Tatyana , Dorogina Olga
Published: October 2019

The article discusses the features and main stages of rare and endangered plant species introduction. It is necessary to be guided by the principles of priority and expediency in the preparatory stage, which includes the analysis of literary data and preliminary studies in nature. The first stage is the primary introduction; it involves a detailed study of natural populations and organizing an introduction site. Based on the obtained results, the acclimatization assessment is determined. The study of biological features including reproduction is carried out at the second stage. The third stage includes investigations of the introduced populations. The phenorhythm stability, limiting factors determining dates of phenophase onset, the introduction population optimal size and number, seed longevity and conditions of their storage, self-maintenance ability are revealed. As a result, it is given the adaptation assessment, and recommendations are developed to save rare and endangered species in nature and under introduction conditions. Additional studies include applying karyological, molecular-genetic, biotechnological techniques, and possibilities to reconstruct natural populations.
Prodromus of vegetation of Yakutia
Authors: Gogoleva Paraskovia , Cherosov Mikhail , Mironova Svetlana , Burtseva Evdokia , Sleptsova Nadezhda , Pestryakov Boris , Kharlampyeva Praskovia , Gavrilyeva Lyudmila , Poiseeva Sargylana , Ermakov Nikolai , Telyatnikov Mikhail , Lashchinsky Nikolai , Troeva Elena , Nikolin Evgeny , Filippova Viktoria
Published: October 2019

A brief history of development of the Prodromus vegetation of Yakutia is given. The characteristic of classes is given in a table.
Notes on the taxonomy of Spiraea aemiliana and related species (Rosaceae) in Russia
Authors: Kostikova Vera , Troshkina Victoria
Published: October 2019

The diversity of the plants of Spiraea genus, Calospira section in terms of the morphological characters on the basis of 28 natural populations was studied. Two species of Calospira section spirea grow in the Asian part of Russia (S. betulifolia Pall. and S. beauverdiana C.K. Schneid.). S. betulifolia Pall. subsp. aemiliana (C.K. Schneid.) H. Hara subspecies grows on the Islands in the Asian part of Russia (Sakhalin and the Kuril Islands). Its distinctive features are small round or spatulate (obovate) lamina and the absence of the inflorescence follicles pubescence, as well as a few metrical characteristics that may be auxiliary in determining the taxon.
Coenopopulations of Myricaria bracteata Royal at the territory of the Republic of Kazakhstan and their ontogenetic structure
Authors: Lyakh Elena M. , Astashenkov Alexey Yu.
Published: October 2019

The article represents the analysis of 4 Myricaria bracteata populations in Kazakhstan. It was found that ontogenetic spectrum reflects the development degree of coenopopulations related to succession processes of riparian communities. Depending on the floodplain width, free space and phytocenotic pressure, the ontogenetic spectrum and stability of coenopopulation vary from left-sided incomplete to centered incomplete; from unstable invasive (in a narrow floodplain) through successive transitional and young normal to mature normal stable (in a wide floodplain) ones.
The «red snow» of the Polar Urals (Western Siberia)
Authors: Naumenko Yuriy
Published: October 2019

Pink-red colored snow fields were sampled in the area of Ochety Lake (the Polar Urals, West Siberia) at the altitude of 272 m above the sea level in August 2019. Zygospores of Chlamydomonas nivalis prevailed in plant communities. Altogether, 9 species of algae have been discovered in snow samples: 7 species of Cyanoprokaryota, 1 species of Bacillariophyta and 1 species of Chlorophyta.
Mosses in Brachypodio-Betuletea forests of West Siberia
Authors: Pisarenko Olga
Published: October 2019

Brachypodio-Betuletea forests of West Siberia were evaluated for the mosses. The observed localities are in limits 51°48’ − 56°48’ N and 60°16’ − 88°20’ E. 93 moss species are registered their, but only 36 are common. Most of the species are associated with Betula-trunks. The list of species and their occurrence by main types of the forests are given. The diversity and abundance of mosses correlate with the community humidity, decreasing with xerophytization. It is shown that on the studied territory moss species composition and constancy well indicate the latitudinal replacement of classes of forest vegetation.
Medicinal potential of extracts from the chanterelle mushroom, Cantharellus cibarius (Review) and prospects for studying its strains from differs plant communities of ultracontinental regions of the Asia
Authors: Vlasenko Vyacheslav , Turmunkh Dejidmaa , Ochirbat Enkhtuya , Budsuren Dondov , Nyamsuren Kherlenchimeg , Samiya Javkhlan , Ganbaatar Burenbaatar , Vlasenko Anastasia
Published: October 2019

The article reviews medicinal properties of Cantharellus cibarius. Fruiting bodies of this species are a promising source of extracts with vitamins, carbohydrates, proteins, polysaccharides, sterols, phenolic acids, which various biological properties.
Improvement of fire danger rating and vegetation fire behaviour prediction on protected areas
Authors: Volokitina Aleksandra , Nazimova Dina , Sofronova Tatiana , Korets Mikhail
Published: October 2019

Protected areas (PAs) are established to conserve biological diversity, to maintain nature complexes and objects in their natural condition. Strict nature reserves prevail in Russia by their total area. The whole nature complex is forever extracted from economic use in nature reserves. Here it is prohibited to pursue any activity which might disturb or damage the nature complexes. Even under the existing strict protection from anthropogenic ignition sources, vegetation fires do occur on their territory. Besides, lightnings − these natural ignition sources − are impossible to exclude. Since large destructive fires are impermissible in nature reserves, the later especially need vegetation fire behavior prediction for fire management. Fire behavior prediction includes fire spread rate, development (from surface fire into crown or ground one) and fire effects. All this is necessary for taking optimal decisions on how to control each occurring fire and how to suppress it. The Sukachev Institute of Forest SB RAS has developed a method to improve forest fire danger rating and a technique of vegetation fire behavior prediction using vegetation fuel maps (VF maps).
The Lichens of the Mountain-Taiga Belt of the Ergaki Nature Park
Authors: Zyryanova Olga A.
Published: October 2019

The article presents the data on the species composition of lichens in the mountain-taiga belt of the Ergaki Nature Park. The taxonomic list of lichens is represented by 288 taxa of a species rank belonging to 89 genera and 39 families. The largest number of species is characterized by the crustose life form. Mesophytes and epiphytes are predominant in the terms of ecological substrate.
Metallized ceramic substrate with mesa structure for voltage ramp-up of power modules
Authors: Hourdequin Hélène , Laudebat Lionel , Locatelli Marie-Laure , Valdez-Nava Zarel , Bidan Pierre
Published: October 2019

As the available wide bandgap semiconductors continuingly increase their operating voltages, the electrical insulation used in their packaging is increasingly constrained. More precisely the ceramic substrate, used in demanding applications, represents a key multi-functional element is being in charge of the mechanical support of the metallic track that interconnects the semiconductor chips with the rest of the power system, as well as of electrical insulation and of thermal conduction. In this complex assembly, the electric field enhancement at the triple junction between the ceramic, the metallic track borders and the insulating environment is usually a critical point. When the electrical field at the triple point exceeds the critical value allowed by the insulation system, this hampers the device performance and limits the voltage rating for future systems. The solution proposed here is based on the shape modification of the ceramic substrate by creating a mesa structure (plateau) that holds the metallic tracks in the assembly. A numerical simulation approach is used to optimize the structure. After the elaboration of the structures by ultrasonic machining we observed a significant increase (30%) in the partial discharge detection voltages, at 10 pC sensitivity, in a substrate with a mesa structure when comparing to a conventional metallized ceramic substrate.
About Flexibility Problem of Distribution Electrical Network
Authors: Shushpanov Ilia , Suslov Konstantin
Published: October 2019

Global electricity companies have embarked on a transition to digital microprocessor devices. Digitalization penetrates every aspect of power industry, whether it is power generation, transmission or distribution. Being the most widespread, the distribution electrical networks are nevertheless the least digitalized. Some issues about them are still insufficiently studied. These are the collection of necessary information, adaptation methods, and the effect of the unrecognizability of some short circuits. This can be explained by improper placement of devices, which causes lack of data, which, in turn, leads to the failure of relay protection and emergency control systems of distribution electrical networks to provide selectivity. The paper proposes algorithms for placing measuring devices so that the information will be collected properly. Placement of the devices will allow adjusting the operating parameters of the relay protection and emergency control systems depending on changes in external weather conditions and load fluctuations in the network. We propose a technique for control of distribution network, taking into account the type of damage in case of emergency in real time, and a technique for placement of measuring devices and creation of an information communication network.
Fuzzy logic approach on traffic control of a Diverging Diamond Interchange in real time
Authors: Kukić Katarina , Jovanović Aleksandar
Published: October 2019

In the recent paper, authors have considered a problem of controlling an oversaturated intersection in real time and developed a mathematical model based on fuzzy logic. The model was tested on an oversaturate “T” intersection and we obtained solutions with less control delay in comparison to the “fixed time” model. First, we will present the basic concepts of those results. In the rest of the paper, we apply a similar technique to develop a model for controlling a diverging diamond interchange – a type of diamond interchange in which the two directions of traffic on the non-freeway road cross to the opposite side on both sides of the bridge at the freeway. This type of interchange was developed in the 1970s in France but since 2009. it has been implemented in many different locations, above all in the USA.
Optimal conditions for a control problem associated to an economical
model
Authors: Bundău Olivia , Juratoni Adina
Published: October 2019

In this paper, we presents a growth model in infinite and continuous time, leads to a control optimal problem. Using the Pontryagin's principle we done necessary conditions for optimality. Also, weprove the existence, uniqueness and stability of the steady state for a differential equations system.
Functions represented into fractional Taylor series
Authors: Groza Ghiocel , Jianu Marilena
Published: October 2019

Fractional Taylor series are studied. Then solutions of fractional linear ordinary differential equations (FODE), with respect to Caputo derivative, are approximated by fractional Taylor series. The Cauchy-Kowalevski theorem is proved to show the existence and uniqueness of local solutions for FODE with Cauchy initial data. Sufficient conditions for the global existence of the solution and the estimate of error are given for the method using fractional Taylor series. Two illustrative numerical examples are given to demonstrate the validity and applicability of this method.
Optimisation of FE parameters used in fine numerical modelling of steel T-stub elements
Authors: Nunes Daniel L. , Ciutina Adrian , Marginean Ioan , Dinu Florea , Tadić Ivana
Published: October 2019

In steel frame buildings the role of the beam-to-column connection is crucial for assuring structural integrity, and due to their complexity and non-linear behaviour, the bolted configurations of this type of connection are usually the most vulnerable elements of a building. In order to assess the behaviour of a bolted steel connection, the simplified model of the equivalent T-stub is used. Based on previous experimental studies on a parametric set of T-stubs, the aim of this study is to optimise a numerical model in order to validate the experimental data and produce a fully calibrated finite element model,created with Abaqus/Explicit FE software package. To model properly the nonlinear behaviour of the component, an analysis of the properties of the model was conducted regarding the finite elements properties, analysis properties and discretization. The solid finite element properties considered were such as
the number of nodes, integration, contact and true stress-strain material definition, including damage criteria. In this context, the assembly was subjected to a transient quasi-static explicit FE analysis using mass-scaling features. The results are expressed by comparison of Force-displacement curves obtain via numerical analysis and experimental testing.
Applications based on electromyography sensors
Authors: Kristof Robert , Moldovan Cristian , Ciupe Valentin , Maniu Inocenţiu , Banda Magdalena
Published: October 2019

This paper presents our work regarding two different applications that use the electromyography sensors incorporated in the Thalmic Labs Myo Armband. The first application is about the HumanMachine Interface (HMI) for controlling an industrial robot bycreating the environment for the user to control a robot’s gripper position just by moving his arm. The second application refers to the real time control of a tracked mobile robot that is built with the Arduino development board. For each application thesystem design and the experimental results are presented.
Analytical model for computing translational and rotational angular momentum occurring in treadmill walking
Authors: Stoia Dan Ioan , Totorean Alin-Florin
Published: October 2019

The kinematical modifications of human gait associated with treadmill walking are well studied in the literature. Fewer researches are focusing on computing the dynamical parameters of the gait, in this particular situation. Starting from kinematical data recorded in treadmill walking, the paper proposes an analytical model of the lower limbs that allows computation of translational and rotational angular momentum for each segment. The experimental data used in the study were recorded using ultrasound based, 3D motion equipment. By mean of this system, relative and absolute angles of the lower limb can be computed using Cartesian coordinates of each anatomical landmark. The velocities and accelerations were obtained by numerical derivative. In order to compute the dynamical parameters, segment masses and inertias were collected from the literature. The masses are based on percentage of total body weight while the segment inertias are based on geometrical characteristics of lower limb segments.
Numerical Vibro-Acoustic Analysis of a Ship Compartment Structure
Authors: Barcan Mihaela , Chirica Ionel , Beznea Elena-Felicia
Published: October 2019

This paper investigates the vibro-acoustic problems of an elastic compartment structure (wheel house) belonging to a ship, coupled to the enclosed air. The excitations from the structural walls of the room by the sound source cause vibrations throughout the system and noise within the acoustic domain. Due to the coupling between the structural vibrations and acoustic pressure field, these systems are typically referred to as vibro-acoustic systems. The acoustic excitations and vibrations on the structural walls of a ship structure, however, are significantly larger and have a much more significant effect to the structural integrity of the ship. In order to determine whether coupled responses are needed, three frequency analyses have been performed: calculus of the first 5 natural frequencies of the fluid separately, the structure separately, and the fluid-structure coupled system. The wall thickness of the room walls is of 5 mm and made of layered composite. The stress analysis of the model at a highly participating structural mode is performed.
Investigations on collaborative remote control of virtual robotic manipulators by using a Kinect v2 sensor
Authors: Banda Magdalena , Ciupe Valentin , Moldovan Cristian , Maniu Inocențu , Kristof Robert
Published: October 2019

The present work deals with design aspects and testing results of a novel solution regarding the remote control of two virtual robotic manipulators by using hands motion tracking and palms gesture recognition. The spatial position and orientation of the user's left and right hands' wrists are interpreted by a custom built software application and then forwarded as positioning data and gripper status to a V-Rep server running the simulation scene. The goal of the presented setup is for the user to be able to manipulate objects in the scene in a collaborative way, i.e. pick one object with the first robot and give it to the second one for elsewhere depositing. The real-life applications for this approach are to provide a framework for simplified operator training and programming of robots used in pick-and-place or assembly operations, and also in healthcare for assisting patients in hand -coordination and mobility recovery.
Virtual Reality Authoring Tools for Educators
Authors: Vert Silviu , Andone Diana
Published: October 2019

Virtual reality technologies have been demonstrated to produce encouraging results in the educational process. However, adoption of virtual reality-based instruction among educators has yet to see significant numbers. One of the reasons is the technical difficulty in authoring custom-made VR experiences for students. In this paper, we propose criteria for choosing VR authoring tools that are appropriate for usage in education and apply them to such current platforms. We also present a case study of learning collaboration project that revolved around the usage of VR authoring tools. We conclude with some recommendations regarding additional features that would enhance the exploitation of current VR authoring tools in education.
Identification, Measurement and Reflection of Risks in Accounting
Authors: Chebanova Natalia , Orlova Victoria , Revutska Liliy , Karpushenko M.
Published: October 2019

In the modern environment, the company constantly faces various types of risks in its business activities. Therefore, the problem of identifying and measuring risks is extremely relevant. The article proposes a scheme for managing financial risks, which includes identifying risk factors, determining the permissible risk level, analyzing individual transactions, developing risk mitigation measures. The article proposes to create the following funds, reserves and collateral: a bad debts reserve, provision for warranty service of clients, provision for social orientation, provision for restructuring, provision for burdensome contracts, fiscal (tax) reserves, commercial, industrial, informational risk reserves, future costs and payments reserve, legal provisions, provisions for impairment of assets, reserve fund. Risks should be taken only if the level of return on risky operations exceeds the level of risk. The issue of the choice of certain reserves, funds and provisions is regulated by the accounting policy of the enterprise, where their types and the order of their creation should be clearly defined. Such measures allow planning contingency expenses and informing users of financial statements of future risk events.
Marketing Positions of Kremenchuk Industrial Center in International Markets
Authors: Kratt Oleh , Pochtovyuk Andryi , Trunina Iryna , Pryakhina Kateryna
Published: October 2019

In the article, the authors analyze the role of Kremenchuk as an industrial center. It is determined that Kremenchuk is represented by such flagships machine building enterprises as PJSC “Kryukiv Rail Car Plant”, PJSC “AvtoKrAZ”, PJSC “Kredmash”, PJSC “Kremenchuk Wheel Plant”, PJSC “Kremenchuk Steel Works”. Therefore, the author proposes to carry out the marketing positioning of the Kremenchuk industrial center on the international market, which includes powerful enterprises. The financial economic and marketing activity of machine-building enterprises - members of the Kremenchuk industrial center is analyzed. Through the dialectical connection of methods of analogy and deduction, the stages of development of marketing positioning for the center are proposed for expanding international sales markets for enterprises, marketing positioning is realized by developing a set of marketing tools. It is determined that the effective positioning of the Kremenchuk industrial center will lead to the formation of the brand.
Capitalization as a Tool for Managing the Development of Industry and Rail Transport
Authors: Posokhov Igor , Cherepanova Victoriia , Podrez Olha
Published: October 2019

The Ukrainian real economy encounters similar problems that do not allow its rapid development – high level of wear of productive assets, lack of modern equipment, outdated technologies, inappropriate environmental measures, high rate of occupational injury, etc. All this requires designing of new tools to manage the development of such important sectors of economy as industry and rail transport. Therefore, the urgent issues at the current stage of development of these industries include the definition of conditions for fixed assets capitalization and the sources of its financing. The scientific novelty of the results is identification and justification of the capitalization main components, determining the sources of funding and the mechanism for their attraction. The tool for managing the productive and environmental protection assets capitalization has been designed which is optimized using a two-dimensional dynamic programming model. The results obtained are the basis for the practical solution of the problem, and for further scientific research. This approach allows solving the problem of rail transport and industrial enterprises capitalization in a comprehensive manner, which contributes to their sustainable development.
Criteria for Choosing the Priorities of Smart Development of Industrial Centers in the Context of Globalization
Authors: Rodchenko Volodymyr , Guo Jiafei , Prus Yuliia , Zeyu Liu
Published: October 2019

The purpose of the study is to justify the criteria for choosing the priorities of a smart development of industrial centers in the context of globalization. By analyzing, systematizing and summarizing scientific works, it has been determined that the process of globalization has gone so far that even economically developed countries cannot independently solve production, scientific, technical, financial, trade and other problems effectively. The time of separate and independent economies is over. Industrial centers are the generators and re-translators of global change, the “backbone” of the world economy. In the course of the study, using a structural approach, the authors proposed five groups to assess the components of the potential and the prospects for the smart development of industrial centers in the context of globalization.
Assessment of strategic development potential of the production units of enterprises of railway transport
Authors: Tokmakova Irina , Panchenko Natalia , Obruch Hanna , Kozlova Anastasia , Zaiets Hanna
Published: October 2019

The article reveals the theoretical and methodological basis of the resource approach to the development of the strategic potential of railway enterprises, which is recognized as progressive in matters of the formation of competitive advantages at the present stage of management. The component structure of the strategic potential of enterprises has been clarified and the reasonability of diagnosing the strategic potential of railway enterprises within the framework of a competitive approach in such areas as unique resources and basic competences, operational competencies, adaptive competencies, “proactive competencies”, and the ability to create common values has been explained. A method of assessing the level of development of the strategic potential of the production units of the branches of Ukrzaliznytsya JSC has been developed.
Economic and legal aspects of transportation of cargo in Ukraine in the conditions of Euro integration
Authors: Bocharova Nadiia , Popov Victor , Tupytska Evheniia
Published: October 2019

The article is devoted to the study of legal and economic relations that arise in the field of cargo transportation, in particular, their transshipment and legal grounds for its implementation. The article analyzes the legal nature of cargo handling in both the technological process and civil law services. It is determined that transshipment is a separate technological operation in the course of transportation and has its own basis for implementation, which serves as an agreement and therefore confirms and ensures the existence of a legal relationship between individual actors in economic turnover. The authors list the criteria for the economic efficiency of cargo handling, including delivery of cargo to the area where there are no certain types of transport; economic expediency of certain types of transport; and speeding up the delivery process. The European experience in using the cargo handling operation, the basis of the activity of logistic cents and the purpose of their functioning are analyzed. The statistical indicators of economic efficiency in the EU member countries are determined. The authors draw conclusions on the impact of European integration processes on the Ukrainian economy, in particular on the development of the logistics sector.
Accounting and analytical base for management of logistic flows in tourism business
Authors: Prokopishyna Olena , Kozubova Natalia , Satusheva Karina
Published: October 2019

The paper grounds that the existing potential of the tourism industry of Ukraine can be realized through the introduction of efficient logistic approaches for the development of tourism and recreation and management of tourist enterprises. Based on modern knowledge of the theory and practice of tourism management, a logistic strategy in tourism business serves for the creation of tourism product which is highly competitive in the global market due to implementation efficient management decision upon each component of the logistics system of the company. The paper reveals the essence and major functions of accounting and analytical subsystem of logistic management of tourism companies that enables to shorten the duration of the operating cycle, improve the quality and expand the range of travel services, and increase the flexibility of the travel service. The paper concludes that efficient accounting and analytical subsystem of logistic management gives travel companies wide opportunities to gain competitive advantages on global travel market.
City Retail Network Influence on Transportation Expenses
Authors: Ptytsia Natalia
Published: October 2019

An approach to determining the influence of retail network parameters on the share of transportation costs taking into account the density of outlets is presented. The obtained results can be used to develop recommendations for the optimal area of operation of retail delivery systems, and to estimate cargo flow volume in cities.
Determinants of railway transport sustainability
Authors: Kravchenko Olha , Bohomolova Nadiia
Published: October 2019

The deepening of integration processes between the countries of Europe and Asia, the need for regular and mass passenger and freight traffic contributes to the increasing importance of transport systems. In this context, railway infrastructure, which ensures the uninterrupted operation of industrial complexes in many countries of the world and contributes to the development of international cooperation, acquires particular importance. This is also true for the railway transport of Ukraine, which is a connecting element between the transport systems of the EU, Russia and Asian countries. The paper substantiates that the sustainable functioning of railway transport is one of the necessary conditions for the development of national economies. The system of external and internal determinants of railway transport sustainability is highlighted. These determinants are analyzed on the example of railway transport in Ukraine. It is shown that external determinants form the basis of the functioning of railway companies, which also affects their internal determinants. Management of railway transport sustainability should be comprehensive, which will allow developing an effective set of preventive measures.
Formation of organizational support of the economic security management of the engineering enterprise: methodical and practical aspects
Authors: Shtangret Andriy , Shyra Taras , Mandzinovska Khrystyna , Bilous Sofia
Published: October 2019

In the conditions of critically high uncertainty of changes in the operating environment for the most engineering enterprises, the relevance of ensuring financial security increases, not only for the effective implementation of economic activity, but also for the survival and preservation of business. The implementation of protective measures in the field of economic security provides for counteracting the negative impact of external and internal threats, and its effectiveness is determined by its ability to minimize potential losses. The development of scientific forecasts of changes in the impact of key threats is intended to form an analytical basis for adjusting tactics and strategies for managing economic security. A model for managing the economic security of a engineering enterprise has been developed that allows for the internal interaction of key elements to be carried out in advance, to concentrate the efforts of security subjects and to accumulate the necessary resources.
Competitiveness Management in Motor Transport Enterprises
Authors: Shynkarenko Volodymyr , Kryvoruchko Oksana , Fedotova Iryna
Published: October 2019

The theoretical rationale for the model of developing a strategy for competitiveness managing based on a combination of the positioning and provisions of the resource approach theory is given. The management strategy is being developed at the upper (strategic) and medium (tactical) levels. At the upper level, there is a positioning of the enterprise environmental requirements potential. At the level of individual strategic business units (SBU) – analysis by the method of M. Porter, the possibilities are determined on the basis of provisions of the resource approach. Formation of a common competitiveness management strategy is a compromise of a common strategy project with SBU enterprise strategies. The composition of the competitiveness management system of enterprise is validated: the main subsystems, their functions and interrelations between them are defined. Particular attention is paid to the management subsystem, which consists of three subsystems: structural and functional, self-development and informational and behavioral. The main functions of the decision, transforming and information controlling blocks at all management levels are defined. A model of structure of the enterprise competitiveness management system is proposed. Under strategic management, the development of functional strategies is proposed to be transferred to the upper and middle management levels. Using the matrix management structure of the functional units of the enterprise is suggested.
The labour market in the context of the growth of globalization processes: evidence from Ukraine and countries of the European Union
Authors: Chatchenko Tatiana V. , Miriasov Yurii O. , Davidova Irina A. , Mykytas Vistoriia V.
Published: October 2019

The labour market is a special market of means of production, which requires special attention, since the subject of exchange is the ability of people to work, skills and knowledge of a person. The welfare of the population, its purchasing power, level of income and, in the end, the standard of living depends on the efficiency of the exchange at the market. The issue of unemployment is one of the key issues in the state regulation of the labor market, which causes a decrease in household incomes and the general population, a decrease in the welfare of the nation and in general the gross domestic product. Scientists distinguish several types of unemployment on various grounds: reasons, structure and period, etc. But one of the topical problems of the present, with a tendency towards rising retirement age, observed in both developed and developing countries, is youth unemployment. That entails a set of problems: the inadequacy of education with the current requirements of the labour market, the lack of vacancies, and the increase of retirement age employees delays the term of retirement, thus not freeing jobs, etc.