bluuebunny/crossref_metadata_2025 huggingface dataset:
Reclamation of thermal power plant waste as a distributed phase in electrodeposited Ni composite coating
Authors: Aruna S. T. , Kiran Abhilash , Shilpa M.
Published: June 2019

In the exploration for newer and inexpensive distributed phases that can be used in electrodeposited Ni-composite coatings, cenosphere particles which are one of the constituents of fly ash, the waste product of thermal power plants has been explored as a potential candidate material. An attempt was made to prepare electrodeposited Ni-cenosphere composite coating. The as-received cenosphere particles could be codeposited only after reducing the particle size by ball milling. The loading of cenosphere particles in the Ni-sulphamate bath was varied (25, 75 and 100 g L−1) and a maximum microhardness of 430 HK at 50 gF load was obtained for the coating deposited from 100 g L−1 cenosphere containing bath. The Ni-cenosphere composite coating with higher microhardness exhibited lower wear rate. Thus cenosphere, a waste product from thermal power plants is a potential candidate for a greener surface engineering strategy for improving the wear resistance of electrodeposited Ni composite coating.
Does the Perceived Accuracy of Urine Drug Testing Impact Clinical Decision-Making?
Authors: Rosenfeld Barry , Budescu David V. , Han Ying , Foellmi Melodie , Kirsh Kenneth L. , Passik Steven D.
Published: June 2019

Background

Urine drug testing techniques have different rates of false-positive and false-negative test results. However, clinicians may have highly varying perceptions of test accuracy and may compensate for perceived inaccuracy by incorporating other factors into their interpretation of observed test results. Thus, there is the potential for adverse consequences from decisions based on inaccurate test results or interpretation.

Methods

We surveyed 466 members of the American Society of Addiction Medicine to examine clinicians’ perceptions of the accuracy of 2 types of urine drug tests, immunoassay (IA) and liquid chromatography–tandem mass spectrometry (LC-MS/MS), and the extent to which behavioral and demographic factors influence the interpretation of test results. Participants read 4 brief vignettes describing positive and negative test results in hypothetical patients who differed along several dimensions (gender, age, race/ethnicity, comorbid mental disorder, court-ordered versus voluntary status, treatment compliance). Outcome variables include likelihood of renewed drug use, likelihood of test error, whether to request additional testing, and whether to report the violation to a probation officer.

Results

The strongest predictor of study outcomes was treatment compliance (consistent versus inconsistent attendance), as this was the only independent variable to generate effect sizes of medium strength. Significant effect sizes were also found for type of test used (IA versus LC-MS/MS), legal status (court-mandated versus voluntary), presence of a comorbid mental disorder, treatment history, and race, although effect sizes for these variables were small and less consistently observed.

Conclusions

These results highlight the potential for error in clinician judgments about urine drug testing. Not only were participants likely to underestimate the accuracy of “confirmatory” LC-MS/MS testing, but vignettes suggested that a number of historical and demographic factors may influence interpretation of test results.
Substrate recognition by bacterial solute-binding protein is responsible for import of extracellular hyaluronan and chondroitin sulfate from the animal host
Authors: Oiki Sayoko , Sato Masahiro , Mikami Bunzo , Murata Kousaku , Hashimoto Wataru
Published: June 2019

Glycosaminoglycans (GAGs) such as hyaluronan and chondroitin in animal extracellular matrices contain disaccharide-repeating units. In a Gram-negative pathogenic Streptobacillus moniliformis, which belongs to Fusobacteria phylum and resides in rodent oral cavities, the solute-binding protein (Smon0123)-dependent ATP-binding cassette transporter imports unsaturated hyaluronan/chondroitin disaccharides into the cytoplasm after GAG lyase-dependent depolymerization. Here we show substrate recognition of unsaturated hyaluronan disaccharide by Smon0123. Moreover, Smon0123 exhibited no affinity for unsaturated chondroitin disaccharides containing three sulfate groups, distinct from non-sulfated, mono-sulfated, and di-sulfated chondroitin disaccharides previously identified as substrates. Crystal structure of Smon0123 with unsaturated hyaluronan disaccharide demonstrates that several residues, including Trp284 and Glu410, are crucial for binding to unsaturated hyaluronan/chondroitin disaccharides, whereas arrangements of water molecules at binding sites are found to be substrate dependent through comparison with substrate-bound structures determined previously. These residues are well conserved in Smon0123-like proteins of fusobacteria, and probably facilitate the fusobacterial residence in hyaluronan-rich oral cavities.
The intracellular domain of CX3CL1 regulates adult neurogenesis and Alzheimer’s amyloid pathology
Authors: Fan Qingyuan , Gayen Manoshi , Singh Neeraj , Gao Fan , He Wanxia , Hu Xiangyou , Tsai Li-Huei , Yan Riqiang
Published: June 2019

The membrane-anchored CX3CL1 is best known to exert its signaling function through binding its receptor CX3CR1. This study demonstrates a novel function that CX3CL1 exerts. CX3CL1 is sequentially cleaved by α-, β-, and γ-secretase, and the released CX3CL1 intracellular domain (CX3CL1-ICD) would translocate into the cell nucleus to alter gene expression due to this back-signaling function. Amyloid deposition and neuronal loss were significantly reduced when membrane-anchored CX3CL1 C-terminal fragment (CX3CL1-ct) was overexpressed in Alzheimer’s 5xFAD mouse model. The reversal of neuronal loss in 5xFAD can be attributed to increased neurogenesis by CX3CL1-ICD, as revealed by morphological and unbiased RNA-sequencing analyses. Mechanistically, this CX3CL1 back-signal likely enhances developmental and adult neurogenesis through the TGFβ2/3-Smad2/3 pathway and other genes important for neurogenesis. Induction of CX3CL1 back-signaling may not only be a promising novel mechanism to replenish neuronal loss but also for reducing amyloid deposition for Alzheimer’s treatment.
Exact Solutions of an Alice-Bob KP Equation*
Authors: Wu Wen-Biao , Lou Sen-Yue
Published: June 2019

An Alice-Bob Kadomtsev-Petviashivili (ABKP) equation with shifted-parity (

P
^

s
x

parity with a shift for the space variable x) and delayed time reversal (

T
^

d

, time reversal with a delay) symmetries is investigated. The multi-soliton solutions with three arbitrary even or odd functions are found from the

P
^

s
x

T
^

d

symmetry reductions of a coupled local KP system. The result shows that for the ABKP equation with

P
^

s
x

T
^

d

nonlocality, the odd numbers of solitons are prohibited. The solitons of the ABKP must be paired. For the ABKPII equation, there exists a critical value of wave numbers for the existence of paired solitons. For the ABKPI equation, there are two types of “breather” excitations. A lump solution of the ABKPI may possess four, five or six leaves.
General Solution for Unsteady Natural Convection Flow with Heat and Mass in the Presence of Wall Slip and Ramped Wall Temperature
Authors: Jan Saeed Ullah , Haq Sami Ul , Shah Syed Inayat Ali , Khan Ilyas , Khan Muhammad Atif
Published: June 2019

This work is focused on the effect of heat and mass transfer with unsteady natural convection flow of viscous fluid along with ramped wall temperature under the assumption of the slip wall condition at the boundary. Analytical solutions are obtained by using Laplace transformation to the non-dimensional set of governing equations containing velocity, temperature and concentration. Moreover, the expression for skin-friction is derived by differentiating the analytical solutions of fluid velocity. Numerical tables for Skin-friction, Sherwood number and Nusselt-number are examined. For the physical aspects of the flow, we use various values of involved physical parameters such as Prandtl number (Pr), slip parameter (η), Schmidt number (Sc), buoyancy ratio parameter (N), Sherwood number (Sh), and time (t). Additionally, the general solutions are plotted graphically and a comprehensive theoretical section of numerical discussions is included.
Intermediate Energy Reactions Versus Heavy-Ion Fusion: Light Particle Emission and Post-Saddle Friction in the Presence of Deformation Effects*
Authors: Chen Na , Ye Wei
Published: June 2019

A decaying nucleus undergoes a change in deformation when it fissions. This affects the particle emission in the fission process. Using the dynamical Langevin model, we investigate the role of deformation in the sensitivity of post-saddle neutrons and light charged particles (LCPs) to the post-saddle friction strength (β) for heavy nuclei 240Am produced with different initial conditions: (i) a low excitation energy E* and a large spin ℓ (provided via a fusion mechanism) and (ii) a high E* and a large ℓ as well as a higher E* but a small ℓ (provided in peripheral and near-central intermediate energy heavy-ion reactions, respectively). It is shown that deformation obviously enhances the sensitivity of post-saddle neutrons to β at intermediate-energy peripheral collisions and that for case (i), the drop of LCPs emission due to deformation makes post-saddle LCPs to be almost insensitive to β, but for case (ii) LCPs still have a significant change with β. Furthermore, we find that post-saddle LCPs display a greater sensitivity to β for near-central collisions than for peripheral collisions. These results suggest that given the deformation effects, to better probe post-saddle dissipation properties with neutrons (LCPs) in experiments, it is best to choose those excited heavy nuclear systems populated in peripheral (near-central) collisions at intermediate energies.
Implementing Black Hole as Efficient Power Plant*
Authors: Wei Shao-Wen , Liu Yu-Xiao
Published: June 2019

Treating the black hole molecules as working substance and considering its phase structure, we study the black hole heat engine by a charged anti-de Sitter black hole. In the reduced temperature-entropy chart, it is found that the work, heat, and efficiency of the engine are free of the black hole charge. Applying the Rankine cycle with or without a back pressure mechanism to the black hole heat engine, the compact formula for the efficiency is obtained. And the heat, work and efficiency are worked out. The result shows that the black hole engine working along the Rankine cycle with a back pressure mechanism has a higher efficiency. This provides a novel and efficient mechanism to produce the useful mechanical work, and such black hole heat engine may act as a possible energy source for the high energy astrophysical phenomena near the black hole.
Microplasma assisted synthesis of gold nanoparticle/graphene oxide nanocomposites and their potential application in SERS sensing
Authors: Sun Daye , Tang Miao , Zhang Li , Falzon Brian G , Padmanaban Dilli Babu , Mariotti Davide , Maguire Paul , Xu Heping , Chen Mei , Sun Dan
Published: June 2019

This is the first study on the deployment of direct current atmospheric pressure microplasma technique for the single step synthesis of gold nanoparticle/graphene oxide (AuNP/GO) nanocomposites. The nanocomposites were characterized using ultraviolet–visible spectroscopy (UV–vis), x-ray diffraction and x-ray photoelectron spectroscopy and their formation mechanisms have been discussed in detail. Our AuNP/GO nanocomposites are highly biocompatible and have demonstrated surface enhanced Raman scattering (SERS) properties as compared to pure AuNPs and pure GO. Their potential as SERS substrate has been further demonstrated using probe molecules (methylene blue) at different concentrations.
Analysis of an industrial internship in the department of mechanical engineering with servqual, kano, and quality function deployment
Authors: Devi FA , Rofiq Z , Purnomo E
Published: June 2019

The objective of this study is to examine: (1) the real implementation of an industrial internship in Vocational High School 2 Klaten (2 the level of gap between the perceived quality and the expected quality of the implementation (3) attribute importance needed in improving the quality of the implementation (4) priorities that the school management must do for improving the quality. Data analysis used servqual, Kano model and quality function deployment. The data collection techniques were observation, questionnaires, interview, and documentation. The results of this study indicated the average performance based on the rating of students, teachers, and industry under expectation score (priority score). The gap level of tangibles was -0,47, reliability was -0,51, responsiveness was -0,57, assurance is -0,44 and empathy is -0,20. All of the attributes are important to improve the quality of industrial internship program. Prioritized strategies had to be done by school’s management were: (1) preparing infrastructure for internship participants (2) determining the feasibility standards of companies involved in the internship program (3) moral development of internship participants (4) determining duties and obligation of the supervisor teachers (5) setting the standard operating procedure of pre-implementation of the program (6) choosing standard activities for internship participants (7)setting the policy of internship’s wearpack
Performance and exhaust gas emission of gasoline engine fueled by gasoline, acetone and wet methanol blends
Authors: Prayogi Y , Syaiful  , Sinaga N
Published: June 2019

Increased motor vehicles have resulted in increased fuel consumption and emissions. Pramium fuel has an octane value of 88. Acetone 110 octane value and wet methanol 113 octane value. Mixing of premium acetone and wet methanol is expected to improve engine performance and reduce emissions. Research using gasoline engines with electronic fuel injection (EFI) systems. The results of the testing, there was a 12.62% increase in brake power. Brake specific fuel consumption (BSFC) has increased by 4.35% compared to P100. The increase in BSFC was due to the calorific value of acetone and wet methanol which was lower than the premium. The resulting CO and HC emissions have decreased. The decrease in CO emissions reached 87.5%. The lowest level of HC produced reaches 46 ppm. Mixing acetone and wet methanol into the premium can improve engine performance. It can be seen from the increase in brake power produced. Exhaust emissions are produced better. CO and HC levels have decreased.
An analysis of changes in flange surface roughness after being used to tighten a corrugated metal gasket
Authors: Nurhadiyanto D , Haruyama S , Mujiyono  , Sutopo
Published: June 2019

A corrugated metal gasket is not reusable once the plastic deformation has occured. Meanwhile, flange might be reusable if it has not corroded. This research aimed to find out the surface roughness and contour shape of the flange after being used to tighten the gasket. This study employed a method of measuring the surface roughness before and after the first, second, third, and fourth tightening. The flange used had a surface roughness of Ra 3.5µm, Ra 2.5 µm and Ra 1.5 µm. The measurement of surface roughness was based on the standard of JISB0601-2001. The findings show that no significant change occured on the flange surface roughness. However, the corrugated contour shape did occur in the surface roughness after use.
Model development for garment design assessing using DEMATEL
Authors: Jerusalem M A
Published: June 2019

Various models for evaluating the best garment design have been developed, however most of them disregard interdependence among their elements. This study aims to develop comprehensive model that consist of intrinsic and extrinsic elements for assessing garment design schemes, and take into consideration of interrelation between its elements. The Decision-Making Trial and Evaluation Laboratory (DEMATEL) was utilized for analysing a relationship between the key components for assessing garment design. The research constructed the garment design evaluation framework that consider intrinsic and extrinsic elements and interdependence elements. The model can be used as a framework for evaluating garment design with some various advantages: considering interrelations between components and influences between elements.
The evaluation of industrial assisted classes program in vocational schools in Yogyakarta
Authors: Hadi S , Rabiman
Published: June 2019

This research was aimed to know the attainment of industrial assisted classes program in vocational school (SMK) in the special region of Yogyakarta. This research is an evaluation model using CIPP adopted from Stufflebeam. The setting of the research is SMK in special region of Yogyakarta (DIY) which organize the program of industry class which are: SMK Muhammadiyah 1 Imogiri Bantul, SMK Muhammadiyah 1 Playen Gunungkidul, SMK Muhammadiyah Pakem Sleman, SMK Muhammadiyah 3 Yogyakarta and PT. AHM Yogyakarta. Informants in this study are the SMK Manager, Productive Teacher Motorcycle Engineering, and Honda’s Training Manager. The collection of data through observation, in-depth interviews, and documentation. Data analysis uses an interactive model from Miles & Huberman. The results of the study concluded that: (1) the evaluation of contex: SMK and industry have agreed that the minimum graduates at level I, SMK-Industri have both understood the policy and objectives of the built-in class program, SMK has prepared the standardized provisions of the industry; (2) the evaluation of input: the qualification and competence of productive teachers are in accordance with the minimum requirement of S1 and have minimum training certificate of brown level, the school curriculum has been integrated with the industry curriculum, adjustments of the learning facilities and infrastructure to industry standards is done gradually, the schedule of learning is the authority of schools and industry assist scheduling for field work program and industry visit program; (3) the evaluation of process: the industry help the preparation of learning materials, training, the provision of places of visit and fieldwork practices of industry, industry monitoring and supervision, the industry conduct the test of competency; (4) the evaluation of the product: 60% of the industry workforce partners come from the industrial assisted classes program graduates, the granting of aid to students who are going to entrepreneurship.
Island model with genetic algorithm for solution of crystal structure from X-ray powder diffraction data
Authors: Zaloga Aleksandr N , Burakov Sergey V , Yakimov Igor S , Gusev Konstantin A , Dubinin Petr S
Published: June 2019

In this paper, we consider the problem of the study of polycrystalline substances: restoration of a substance atomic structure by full-profile analysis of powder diffraction data. This task is specific since it is not necessary to find very good solutions on average, but it is necessary to find the best one at least sometimes. To solve this problem, it is proposed to use an evolutionary algorithm based on the cooperative island model. The article describes the main stages and features of the algorithm and notes the qualitative advantages of this model in comparison with other methods (including evolutionary). The description of innovations proposed and the results of computational experiments are given. Conclusions from the experimental results are given, and further prospects for improving the efficiency of this method were noted.
Synthesis and research of polyaluminosilicate chemical structure influence on properties of dielectric layers received by 3D aerosol printing
Authors: Ivanov A A , Polyushko V A , Khomyakov A Yu
Published: June 2019

Polyaluminosilicates with different chemical structures have been synthesized. They have been experimentally studied and a priori estimated. Dielectric ceramic layers have been obtained by means of 3D aerosol printing and studied with the use of synthesized polyaluminosilicates and highly dispersed powder of Al2O3 ceramic filler.
Method of creation and verification of the spacecraft onboard equipment operation model
Authors: Kulyasov Nikita , Isaeva Olga , Isaev Sergey
Published: June 2019

This article represents the method of creation and verification of a simulation model consisting of graphical structure duplicating the elements of spacecraft onboard equipment and the knowledge base describing the methods of its function. The authors have developed software tools for model building and verification with the help of visual components converting formal description of the model and the knowledge base into interactive graphical images of infographics. The method can be used at any stage of onboard equipment designing, however it is most efficient at the initial stages.
Modelling the behaviour of longitudinal shear cracks in a two-layer elastic strip
Authors: Borisova N L , Loktev A A
Published: June 2019

The study is devoted to the urgent question of forecasting the development of defects in the form of cracks in a two-layer elastic material, which affect its strength and durability. The results will allow us to simulate the occurrence and behaviour of the defect from the insufficient strength of the material, as well as to formulate the optimal operating conditions for the two-layer material. Given analytical expressions will let to see the effect of various parameters of the initial state on the development of a defect in the form of a crack of a longitudinal fracture.
Structure and mechanical properties of laser-arc hybrid welding of 13Mn6 steel welded with austenitic filler
Authors: Vorontsov A V , Utyaganova V R , Chumaevskii A V , Gurianov D A , Ivanov A N
Published: June 2019

In this article low-alloy structural steel 13Mn6 is welded by hybrid laser-arc welding. To increase the homogeneity of the weld metal during welding, an austenitic filler wire was used. To find out the working characteristics of the joint obtained by the HLAW method, metallographic studies were carried out, the microhardness of the welded joint was measured, tests for static tensile strength and static bending were carried out, and fatigue properties of the joint were also investigated. HLAW with the use of austenitic wire can positively influence the properties of the welded joint. In addition, when welding parameters vary, there is a possibility of penetration of the filler material to the entire depth of penetration, as well as to some partial value of its penetration. The article considers the principal possibility of joining heterogeneous materials on the example of 13Mn6 and 308SS steels.
Paralleling of calculations and vectorization of processes in digital treatment of seismic signals by cubic spline
Authors: Zayniddinov H N , Mallayev O U
Published: June 2019

In this work the possibility of parallelization of calculations when smoothing data using the cubic spline method using examples of seismic signal processing has been researched. The main indicators of efficiency and acceleration of parallel and sequential algorithms were calculated.
Proactive management of the design and development processes of interactive electronic maintenance and repair documentation for aircraft
Authors: Frolova E A , Ivakin Ya A , Semenova E G
Published: June 2019

The article deals with the quality management of interactive electronic technical manuals on the operation and repair of aircraft. It has been established that the quality management tools for interactive electronic maintenance and repair documentation for aircraft do not fully satisfy the existing set of specific requirements for the technological process of their design and development, as well as the implementation of proactive quality management procedures in it. This suggests a lack of scientific, methodological and technological security of quality systems in the design and development of interactive electronic maintenance and repair documentation for aircraft. The quality management of interactive electronic technical manuals for the operation and repair of aviation equipment is a sequential process of iterative procedures for evaluating and improving the quality of the specified information and software tools for logistics support.
Application of numerical simulation systems when using composite materials used in additive production
Authors: Chabanenko A V , Kurlov A V , Smirnova A S , Getmanova G V , Gulevitskiy A U
Published: June 2019

Composite materials are widely used in modern production processes. Polymer composite materials, especially from the ABS group with different physical and mechanical properties have great potential in the field of electronic industry. To date, additive technologies are actively used, which requires a new approach to modeling the physical properties of various polymers, passing into a new state at the time of homogenization. For products made of polymeric materials with the use of additive technologies is characterized by the dependence of the final mechanical properties not only on the design, but also on the technological modes of manufacture, as in the manufacturing process is formed by a complex spatial structure of the layers, which leads to heterogeneity of the properties of different parts of the product. The structure of polymers is related to the properties of the final product and the level of quality.
Defining free damped oscillation in technological systems
Authors: Ershov D Y , Lukyanenko I N , Smirnov A O , Aman E E
Published: June 2019

The paper reviews approaches to defining free damped oscillation in mechanical drive of the technological equipment based on identifying the intrinsic oscillation frequencies given the Rayleigh dissipation function under non-linear dynamic effect. It presents a mathematical model for damped oscillation accounting for dissipative forces and their effect on the system vibration activity.
Field-work automation of hydrocarbon exploration using a passive seismic-electric method
Authors: Shaydurov G Y , Potylitsyn V S , Kudinov D S , Maikov O A
Published: June 2019

The paper proposes to exclude the active source of the seismic field from the measurement scheme, which is often a massive truck with equipment installed on it, which in its turn makes it difficult and increases the cost of field-work. The proposed passive measurement installation allows the detection of hydrocarbon deposits by registering the natural fields of the Earth. All measurements can be carried out by one person due to the use of magnetic antennas. A method of field measurements by means of such installation, as well as measurement data on a real gas condensate field are presented.
Determination of powerful active zones of petrochemical equipment
Authors: Valeev S I , Kharlamov I E
Published: June 2019

The paper studies the powerful active state of capacitive equipment. The areas with high values of stresses and deformations that contribute to the formation and development of fatigue and corrosion cracks are identified.
The determination of the optimal profile line of stator arc in the double-acting wing pumps
Authors: Mikhashchenko T N , Gavrilchik M V , Bogolyubov D A
Published: June 2019

In the article there are results of the study of correction mechanism of the stator guide of the double-acting wing pumps. Software application has been developed and tested, it allows determining optimal profile line of stator arc of worn-out pump on the basis of spline interpolation, on condition of preservation and improvement of functional characteristics of the double-acting wing pump. As a result of theoretical and practical experiments the number of double-acting wing pumps has been repaired, their characteristics have been improved. The enterprise has managed not only to save money resources on the repair of wing pumps but also to get a significant profit after the realization of goods.
Methods and approaches to improving the design of flexible backing grinding tools
Authors: Shatko D B , Lyukshin V S , Shutko L G , Strelnikov P A
Published: June 2019

Grinding with flexible backing grinding tools, such as flap wheels and grinding belts, has found wide application at all stages from roughing to decorative surface finish. At the same time, the performance of traditional factory-built flap wheels and grinding belts in many respects do not meet the expectations of consumers. Among other reasons, this is due to the fact that the designs of flap wheels and grinding belts are based on traditional sandpaper. In turn, the sandpaper is made from abrasive mass which is not sorted by shape and not oriented relative to the backing plate surface. The described situation leads to the fact that a large number of grains does not participate in the cutting process, but on the contrary, have a negative impact on it, because the abrasive particles fall out of the bond, heat and deform the material to be ground without cutting it off. The approaches to improving the design of flexible backing grinding tools are discussed, the issues of their design and manufacture using the abrasive grains with controlled shape and orientation are revealed in the article. The data on the impact of the grain shape and orientation on the cutting ability of grinding belts are given.
Three-dimensional stacking IC packaging technology for NAND-flash memory
Authors: Perminov V V , Putrolaynen V V , Shtykov A S , Yartsev A V
Published: June 2019

The article presents the technology of three-dimensional multi-chip packaging and testing of NAND memory module implemented at GS Nanotech in collaboration with Petrozavodsk State University. The main technological operations and quality management methods at each stage of memory modules manufacture are described. These memory modules can be used for solid-state drives production.
Two-point calibration of coating thickness gauges: what needs to be considered to improve measurement accuracy
Authors: Sekatskii V S , Gavrilova O A , Merzlikina N V , Pikalov Yu A , Pikalov Ya Yu , Kaposhko I A
Published: June 2019

It is shown that, unlike other means of measuring linear dimensions, coating thickness gauges do not have a regulatory framework governing their accuracy (error). It is noted that a number of external factors influence the reliability of the results of coating thickness measurements. Using the example of coating thickness gauges, the difference in the measurement results for two-point and zero calibration is shown.
Automation of water distribution management during the reconstruction of main irrigation canals
Authors: Tkachev A A , Ivanenko Yu G , Zarubin V V , Olgarenko I V
Published: June 2019

Canal automation allows increasing the efficiency of projects for the reconstruction and construction of irrigation systems. Modern technological and technical advances make it possible to regulate the flow of irrigation water at all levels of the system more accurately. The basic requirements for water accounting and water metering systems implemented on irrigation systems are applicable only to the conditions of water distribution static regulation. This is primarily due to the use of water-accounting and water-measuring devices developed and used in conditions of steady-state water flow, when there is an unequivocal relationship between the depth and water flow on the rise and on the decline of levels. Using world experience in connection with new achievements in the field of management theory research, it is necessary to consider how and when to implement automation of water distribution management in the context of reconstruction and construction of irrigation main canals. In addition, practical recommendations on other aspects of channel automation should be taken into account, including the dynamic nature of the system; irrigation infrastructure survey; use of SCADA-systems; improving the concept of water distribution management using automatic control methods.
Automation and robotics in the context of Industry 4.0: the shift to collaborative robots
Authors: Galin Rinat , Meshcheryakov Roman
Published: June 2019

This paper describes the role and place of collaborative robotics of industrial automation in the context of rapid industrial development. Collaboration of humans and robots in close proximity in a single work space is a stimulating feature of Industry 4.0. Urgent research issues in the field of industrial robotics include problems of developing safer robots in human-machine interaction systems. Due to the close collaboration between humans and robots, many of the problems of industrial robotics are associated not only with technical issues, but also with social aspects. Optimization and automation of production through the introduction of robotic solutions is widely used. In future it will become the basis of all business processes.
The method of compensation for deviations of ship pipeline routes
Authors: Ngo G V
Published: June 2019

In the article, the authors examine the problem of enhancing the technological features of ship’s pipeline systems at the designing stage. Moreover, it introduces the solutions for questions of ship pipeline’s manufacturing and assembling without measuring the actual size of the ship. The possibility of using the rotating method for paralleling pipe sections simultaneously with technical operation of removing the technical allowances of the pipelines is taken into consideration to fully compensate the total deviations of pipelines routes, which was arisen not only in process of pipes’ manufacturing but also in hull, mechanisms, and equipment’s assembling. An algorithm for determining the compensation level of the pipeline route is established. Based on the results of the researching process, the method to determine the compensation possibilities of pipeline routes and values of technical allowances is established, which was appointed on fitting pipes for expansion in the compensation field in possible directions. The author presents the method of pipeline displacement by using the rotation method to rotate the parallel sections of the pipelines for compensating total deviations, and the technology of assembling the pipeline systems from prepared pipes, which was produced by designing information without measuring the actual size of the ship.
Dynamic method for controlling dynamic viscosity of liquid
Authors: Egorov A V , Veselov E A , Belogusev V N , Kozlov K E , Lysyannikov A V , Zelykevich R B , Kaiser U F
Published: June 2019

The purpose and objectives of the work are to develop scientific and technical bases and experimental testing of the dynamic method of control of the dynamic viscosity of liquids located directly in the pipeline on the basis of angular accelerations of the body immersed in the liquid. The developed method of control of the dynamic viscosity of liquids allows to take into account the uneven supply of mechanical energy from the drive motor of the rotary viscometer based on the assessment of the dynamics of the motion of the body immersed in the liquid. The developed method of control of dynamic viscosity of liquids is based on the proven positions of theoretical mechanics, dynamics of rotational motion, the theory of machine parts and is a logical continuation of the development of rotational methods of control of viscosity of liquids. The results of experimental testing of the developed dynamic method of control of the dynamic viscosity of liquids suggest the adequacy of the developed approaches. As a result of experimental studies of motor oil G-Energy 10w-60 on the basis of the developed dynamic method revealed the ratio of dynamic viscosities at temperatures of 100 ° C and 40 ° C, which was 6,7. Application of existing methods of control of viscosity of G-Energy oil at temperatures of 100 ° C and 40 ° C gives the ratio of dynamic viscosities 6,8. The discrepancy between the results of the dynamic method of control of the dynamic viscosity of the liquid and the control results obtained by known methods of control of the dynamic viscosity of liquids is about 1%.
New approaches to dynamic evaluation of quality indicators
Authors: Barkalov S A , Moiseev S I , Hodunov A M
Published: June 2019

The paper proposes a mathematical model for evaluating time-varying quality indicators of an arbitrary nature. The model is based on the Rasch’s method of estimating latent variables. Cases of single-criterion and multi-criteria evaluation are considered. The obtained estimates are measured on a linear interval scale and do not depend on a set of indicators, time periods and evaluation criteria. Comparison of results with traditional assessment methods.
Parametric identification of the organizational maturity management system
Authors: Dorrer Mikhail
Published: June 2019

The article describes the solution of the problem of constructing a mathematical model that describes the behavior of indicators of the level of maturity of a company’s business processes as a dynamic management system. This work was carried out in the course of solving the problem of developing a system for managing the level of maturity of the enterprise’s business processes. The set of maturity indicators for a company’s business processes is described as a dynamic model in discrete time of a control system in a deterministic formulation. The identification of the parameters of the dynamic model is made on the basis of the data on the maturity of the company’s business processes collected at the operating machine-building enterprise. It is shown that a dynamic model of a control system in discrete time in a deterministic formulation adequately describes the behavior of a system of indicators of the maturity of a company’s business processes. The resulting model reproduces the available experimental data on changes in the levels of organizational maturity in the company. It shows plausible behavior when predicting a process based on various input data in a real-world expected range of input parameters.
Management of competitiveness as a tool to stimulate innovation activity of enterprises of the rocket-space industry of the Russian Federation
Authors: Erygina L V , Kuznetsov A A , Levko V A , Polezhaeva N V
Published: June 2019

Innovation activity is the basis for the effective development of each economic system. It provides a high level of competitiveness, improves efficiency, creates the basis for sustainable economic growth. It is a necessary condition for the full participation of the country’s economy in the global labour market. Formation of a concept for the development of a domestic innovation system is very urgent to increase the competitiveness of Russian enterprises in the rocket and space industry and implement the concept of sustainable economic growth. Analysis of the influence of external and internal factors on competitiveness allows us to identify and adjust the direction of development of innovative activity of rocket-space industry enterprises in order to achieve their sustainable economic development.
Continuous improvement of engineering activities of the organization with use of cards of stream of value creation
Authors: Akhtulov A L , Ivanova L A , Charushina E B
Published: June 2019

The article describes measures to improve the organization’s activities by developing value stream maps as a basis for building lean production. Evidence is provided that the construction of a value stream map is a tool that has significant advantages over other similar tools for describing processes, with which it is possible to describe in detail how the organization should work in order to create a continuous flow.
Consideration of synergy in reforming the ICS RSI as a result of increasing high-tech civilian products
Authors: Borisova N M , Erygin Y V , Erygina L V , Osipenko V B , Shumakova N A
Published: June 2019

Large integrated structures dominate in the rocket and space industry, but current organization of these structures corresponds mainly only the tasks of fulfilling the state defense order. At the same time, one of the priority areas of the industry development is the focus on civilian products. The transition to it is caused by the changes in the system of integrated corporate structures. The article presents the main directions of transformation of integrated corporate structures in the context of increasing the share of high-tech civilian production, the sphere of synergy, as well as methods for estimating the synergistic effect in assessing the effectiveness of restructuring RCT enterprises.
Research of adaptive features of industrial enterprise crisis management system
Authors: Anikina Yu A , Fefelov A A , Malanina Yu N
Published: June 2019

Currently, there is a significant decrease of industrial production level in Russia. The Russian economy has entered a recession, a moderate economic downturn, which will last at least until 2020. In 2019, analysts predict a decline in turnover for the equipment manufacture by 10%. At the same time, banks, having studied the market, give forecasts from 15 to 25 %. Retailers predict a decline in turnover of up to 30%. In this economic environment the researched enterprise JSC “R&D Zenith” will have to reduce production volumes. The article deals with the main features of the crisis management system at the enterprise such as flexibility and adaptability. The authors describe the method of analysis of the adaptive features of the crisis management system of the industrial enterprise, taking into account the specifics of its activities. This method is based on the key factors of the enterprise activity, which affect the adaptive features of the crisis management system, the nature of their changes and the relationship between them.
Classification of the maximal subalgebras of exceptional Lie algebras over fields of good characteristic
Authors: Premet Alexander , Stewart David
Published: June 2019

Let

G
G

be an exceptional simple algebraic group over an algebraically closed field

k
k

and suppose that

p
=

char

(
k
)

p={\operatorname {char}}(k)

is a good prime for

G
G

. In this paper we classify the maximal Lie subalgebras

m

\mathfrak {m}

of the Lie algebra

g

=
Lie
⁡
(
G
)

\mathfrak {g}=\operatorname {Lie}(G)

. Specifically, we show that either

m

=
Lie
⁡
(
M
)

\mathfrak {m}=\operatorname {Lie}(M)

for some maximal connected subgroup

M
M

of

G
G

, or

m

\mathfrak {m}

is a maximal Witt subalgebra of

g

\mathfrak {g}

, or

m

\mathfrak {m}

is a maximal exotic semidirect product. The conjugacy classes of maximal connected subgroups of

G
G

are known thanks to the work of Seitz, Testerman, and Liebeck–Seitz. All maximal Witt subalgebras of

g

\mathfrak {g}

are

G
G

-conjugate and they occur when

G
G

is not of type

E

6

{\mathrm {E}}_6

and

p
−
1

p-1

coincides with the Coxeter number of

G
G

. We show that there are two conjugacy classes of maximal exotic semidirect products in

g

\mathfrak {g}

, one in characteristic

5
5

and one in characteristic

7
7

, and both occur when

G
G

is a group of type

E

7

{\mathrm {E}}_7

.
‘It’s Like a Sentence Before the Sentence’—Exploring the Pains and Possibilities of Waiting for Imprisonment
Authors: Laursen Julie , Mjåland Kristian , Crewe Ben
Published: June 2019

This article explores the implications of the ‘imprisonment queue’ in Norway. Based on interview data (N = 200), we show that while interviewees waiting to serve their sentences enjoy certain benefits such as being able to prepare for or negotiate the terms of their imprisonment, they also suffer from uncertainty and powerlessness. The suspension of their lives while they wait hinders them in pursuing their ground projects, things that really matter to them. This peculiar phenomenon has not received attention from prison scholars generally, as well as scholars writing on Nordic Exceptionalism specifically. This article addresses that gap and poses questions about the relative mildness of the short Norwegian sentences, and more broadly, about what constitutes punishment.
Metabolism of Odorant Molecules in Human Nasal/Oral Cavity Affects the Odorant Perception
Authors: Ijichi Chiori , Wakabayashi Hidehiko , Sugiyama Shingo , Ihara Yusuke , Nogi Yasuko , Nagashima Ayumi , Ihara Sayoko , Niimura Yoshihito , Shimizu Yuya , Kondo Kenji , Touhara Kazushige
Published: June 2019

In this study, we examined the mode of metabolism of food odorant molecules in the human nasal/oral cavity in vitro and in vivo. We selected 4 odorants, 2-furfurylthiol (2-FT), hexanal, benzyl acetate, and methyl raspberry ketone, which are potentially important for designing food flavors. In vitro metabolic assays of odorants with saliva/nasal mucus analyzed by gas chromatography mass spectrometry revealed that human saliva and nasal mucus exhibit the following 3 enzymatic activities: (i) methylation of 2-FT into furfuryl methylsulfide (FMS); (ii) reduction of hexanal into hexanol; and (iii) hydrolysis of benzyl acetate into benzyl alcohol. However, (iv) demethylation of methyl raspberry ketone was not observed. Real-time in vivo analysis using proton transfer reaction-mass spectrometry demonstrated that the application of 2-FT and hexanal through 3 different pathways via the nostril or through the mouth generated the metabolites FMS and hexanol within a few seconds. The concentration of FMS and hexanol in the exhaled air was above the perception threshold. A cross-adaptation study based on the activation pattern of human odorant receptors suggested that this metabolism affects odor perception. These results suggest that some odorants in food are metabolized in the human nasal mucus/saliva, and the resulting metabolites are perceived as part of the odor quality of the substrates. Our results help improve the understanding of the mechanism of food odor perception and may enable improved design and development of foods in relation to odor.
Understanding Workflow and Personal Protective Equipment Challenges Across Different Healthcare Personnel Roles
Authors: Harrod Molly , Petersen Laura , Weston Lauren E , Gregory Lynn , Mayer Jeanmarie , Samore Matthew H , Drews Frank A , Krein Sarah L
Published: June 2019

Background

Hospitals use standard and transmission-based precautions, including personal protective equipment (PPE), to prevent the spread of infectious organisms. However, little attention has been paid to the potentially unique challenges of various healthcare personnel (HCP) in following precaution practices.

Methods

From September through December 2016, 5 physicians, 5 nurses, and 4 physical therapists were shadowed for 1 hour 30 minutes to 3 hours 15 minutes at an academic medical center. Observers documented activities using unstructured field notes. Focus groups were conducted to better understand HCP perspectives about precautions and PPE-related challenges. Data were analyzed by comparing workflow and challenges (observed and stated) in precaution practices across HCP roles.

Results

Precaution patients were interspersed throughout physician rounds, which covered a broad geographic range throughout the hospital. Patient encounters were generally brief, and appropriate use of gowns and cleaning of personal stethoscopes varied among observed physicians. Nurses were unit based and frequently entered/exited rooms. Frustration with donning/doffing was especially apparent when needing supplies while in a precaution room, which nurses acknowledged was a time when practice lapses could occur. The observed physical therapists worked in one geographic location, spent extended periods of time with patients, and noted that given their close physical contact with patients, gowns do not fully protect them.

Conclusions

Movement patterns, time with patients, care activities, and equipment use varied across HCP, leading to a diverse set of challenges in following precaution practices and PPE use. Attention to these differences among HCP is important for understanding and developing effective strategies to prevent the potential spread of infectious organisms.