bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of digital maturity of enterprises
Authors: Levaniuk D.A. , Bolsunovskaya M V , Shirokova S V , Gintciak A M 
Published: December 2020

Abstract
The project management methodology is an approach to the formation of a set of methods that structures the project management system and is reflected in the manuals. The aim of the article is to increase the efficiency of IT project management by adapting existing management methodologies considering the characteristics of projects implemented in the company. Performing the following tasks allows to achieve the goal: - review of existing methodologies; - description of the object of study; - identification of key features of IT project management in the company OOO «ITSK»; - IT project management guidelines; - application of a corporate standard as part of an IT project in the oil and gas industry. The relevance of the article is explained by the wide distribution of IT projects of various fields of application, including projects to automate the activities of an oil and gas industry company that require management throughout the entire life cycle. The application of the project management methodology allows you to record the goals and results of the project, give them quantitative characteristics, determine the time, cost and quality parameters of the project, create a realistic plan for the project, identify, assess risks and prevent possible negative consequences during the implementation of the project. In the course of the work, a brief analysis of the existing project management methodologies was carried out, the specifics of IT project management described, the adaptation of the methodology in the oil and gas industry and the description of the standard used within the company are reflected. Using an example of a project to automate monitoring of KPIs, the application of a corporate methodology based on best practices was demonstrated.
A study of the ice-resistant protective coatings effect on the deterioration of the outdoor covering of ice vessels and icebreakers
Authors: Kitaev M V , Pastukhov P O , Surov V A 
Published: December 2020

Abstract
The study examines the regularities of the outer coatings deterioration of ice class vessels and icebreakers, as well as the effect of ice-resistant protective coatings on deterioration rates. As the initial data, the results of measurements of residual thicknesses from the DEFHULL computer database were used. A comparison of the normative values of the outer coatings deterioration rates for ice class vessels presented in the current version of the RMRS Rules and the values obtained as a result of processing the DEFHULL database data was carried out. The results and conclusions were used in developing the proposals for amending and supplementing the RMRS Rules regarding the purpose of corrosion and abrasion surcharges when determining the thickness of the outer coatings of ice class vessels.
The effect of ozonation on the wettability of wood
Authors: Safiullina A Kh , Mukhametzyanov Sh R , Shaikhutdinova A R , Zhmaylo M A 
Published: December 2020

Abstract
Ozone can be used to break down lignin and hemicellulose in many lignocellulosic materials. Ozone pre-treatment has the following advantages: it effectively removes lignin; as a result of such pre-treatment, toxic products are not formed for the subsequent process; the reaction is carried out at room temperature and atmospheric pressure. The purpose of this work is to study the effects of ozone on the surface of natural and thermally modified wood. Thermal treatment is an environmentally friendly method that allows you to change the color and performance properties of wood. This article analyses the effect of ozonation of the surface of natural and thermally modified wood in order to increase the adhesive properties during bonding. Thus, a more economical consumption of glue and a reduction in the emission of harmful volatile substances into the environment are possible.
Characterization of a 17-4 PH stainless steel obtained through metal powder Hot Isostatic Pressing process for automotive application
Authors: Dabala M , Polyakova M 
Published: December 2020

Abstract
Steels of the family 17-4 Precipitation Hardening stainless steels are often considered as potential candidates for applications requiring high levels of strength (typically above 600 MPa in tensile strength) and a moderate ductility. The aim of this work is the characterization of a 17-4 precipitation hardening stainless steel obtained through metal powder Hot Isostatic Pressing process. The main purposes of using Hot Isostatic Pressing process are the better chemical composition and microstructure homogeneity, the finer grain size (allowing to higher mechanical properties), and the possibility to obtain net shape products, avoiding subsequent finishing operations. The Hot Isostatic Pressing process temperature does not seem to significantly influence the tensile properties, while, the aging temperature is a key factor: lower aging temperature brings to higher strength and lower ductility. However, a higher influence of the Hot Isostatic Pressing process temperature was detected on the toughness. Improved toughness both at room and at low temperature was obtained by optimizing the aging treatments. An improvement of 32 % in impact energy was obtained by the optimization of the aging process thanks to a higher austenite content, which has shown a nanosized shape between the martensite platelets, in the steel structure.
Electric Resistance Welding of Dissimilar Pipes
Authors: Davydov A D , Evstratikova Ya I , Shaposhnikov N O , Klimov G G 
Published: December 2020

Abstract
Numerous studies have shown that corrosion of the casing outer side is one of the factors that has a negative impact on the accident rate of the casing string and is the reason of loss of tightness and various failures and complications in the well. The article describes a method of electric resistance welding of dissimilar steel bonding, which allows to increase the corrosion resistance of casing strings in elevator sections with an increased exterior aggressiveness. The developed technology solutions for welding conditions are presented. Metallographic studies of welded joints and recommendations for technological welding conditions are given.
Determination of the velocity coefficient of a turbine nozzle diaphragm with partial blading of the runner
Authors: Kryukov A. A. , Rakov G. L. , Chekhranov S. V. , Simashov R.R. 
Published: December 2020

Abstract
A method for determining the velocity coefficient of a nozzle diaphragm for a turbine with partial blading of the runner using the ANSYS software package is presented in the paper. The velocity coefficient of the nozzle diaphragm along the active arc length is distributed and plotted. The averaged values of the velocity coefficient of the nozzle diaphragm of the turbine with partial blading of the runner are determined. The dependences of the speed coefficients of the turbine nozzle diaphragm with partial blading of the runner in the range of πt 1,5÷2,5 and the degree of partiality in the range of 0,059÷1 are presented. The approximation resulted in an empirical dependence that takes into account the influence of the degree of partiality and the Mach number on velocity coefficients of the nozzle diaphragm with partial blading of the runner. The empirical dependence φ=f(M1t; ε ) obtained in this work is essential for modeling variable modes and multi-mode optimization of low-flow turbines.
Research of New Cars Quality
Authors: Kozlovsky V. N. , Aydarov D. V. , Novikova A. P. , Cvetkov P.S. 
Published: December 2020

Abstract
The article deals with the study results of the quality of new cars in the production control process in the delivery condition to the consumer. The research was conducted on the basis of resource tests and using information-statistical analysis. The quality assessment of new cars and their role in customer satisfaction is given.
Improve the integrity testing process based on QFD, FMEA and TRIZ
Authors: Vysotskaya Maria V 
Published: December 2020

AbstractIn today’s aircraft industry – competitiveness in the domestic and foreign markets, is the main criterion for the development of quality, a high level of which is achieved through methods and approaches: QFD, FMEA, TRIZ. There is a possibility of application of these methods at tests of production, for the purpose to meet expectations of consumers with the most optimum combination of characteristics of production.The design process is often associated with a compromise of conflicting parameters, which means increased costs and loss of quality. Innovation in the production process can create great value. The rapid development of modern technologies and the commercial environment suggests that the design of production processes requires the application of a systematic method of improvement. The proposed method combines a number of quality tools to support the process of modern development of aviation. In order to implement the acceptance improvement, it is necessary, first, to analyze the product testing process in accordance with the influencing parameters and use QFD (quality function deployment) to obtain the basic requirements for the testing process. Secondly, to find the contradictions of the testing process and analyze them comprehensively. To creatively solve the revealed contradictions, apply the Russian theory of inventive problem solving (TRIZ). When using this technique increases both the efficiency and maneuverability of the use of quality tools to solve technological problems. The effectiveness of the proposed method of improvement is illustrated and confirmed by the example of the process of testing the tightness of the hose of the life support system of the product “Bion - M”.
On shale shaker’s structural optimization and performance improvement
Authors: Korostelkin A A , Filintsev A A , Novokshonov V V , Nikitin A V 
Published: December 2020

Abstract
Recent trends, predictions [1] and overall assessments [2] in extractive industries show there will be changes in many aspects of business, varying from geopolitical issues up to the optimization of working processes and machines. In severe conditions of drilling stations usually based quite a way off to cities and are difficult to access, it is important for all the equipment and machines to operate without failure and provide forecasted level of durability, because unexpected shutdown may lead to halting of production and economic losses. This article is focused on investigation of shale shaker primary characteristics and its behavior during operational loads. In the result of the work an optimization has been performed on the basis of kinematic, strength and NVH performance. Special emphasis was put on the value of vibrational acceleration which reflects an overall possibility of a shale shaker to sift drilling mud. It is a widespread practice to implement optimization tools into different fields. The methods of usage topology optimization can follow the same ideas as it is done in automotive [3] or agricultural industries [4]. Advantage of this paper based on intense cooperation between manufacturing department of the customer and CAE engineers which is the basis of a good design process [5] and overall approach to successful development [6], that includes manufacturing restrictions and that allowed to prove sustainability of the models through validation phases, in the beginning of the project for the initial structure and in the middle of the project for several newly assembled prototypes. So the results of the work have been confirmed by real experiments. Another strong point was a possibility to obtain a feedback right from drilling stations about the condition of optimized shale shaker after it started to work under common operational loads. Constant monitoring, predicting systems and other methods to evaluate overall condition of the machines under operational loads or drilling fluids [7] during the extraction process are important measures in order to prevent unexpected failures. Process and result of this work can be assembled in a step-by-step method for simplified evaluation of shale shakers with vibrators of different amounts and powers. Such method allowed to obtain an overall glimpse on main characteristics, performance, to locate durability weak zones and shows potential for possible structural optimization. The new approach has been used in this research by using the CML-Bench platform, which is a system for managing the simulation driven design projects field of digital design and modeling [8]. This system allows tracking and observing all necessary variables, simulation history and mutual influence of different parameters on different structural changes. Such a method for design engineering allows easily carrying out multidisciplinary optimization of the objects and always being aware of the performance state of the whole system [9].
Methods for identifying risks and opportunities in industrial organizations
Authors: Kozlova A T , Stepanova D A , Klyavin O I 
Published: December 2020

Abstract
Many factors negatively influence the Russian economy in modern conditions. They are the instability of industrial relations, the growth of inflation, the rise in the cost of loans, a significant decrease in the state support for the sectors of the economy and the functioning of the organization, a decrease in real incomes of the population, and many others. The chosen topic is relevant because many enterprises and organizations are unable to adapt to market conditions and make informed decisions under uncertainty. This is one of the reasons for the decline in their activities. This article is devoted to modern methods of managing the efficiency of an organization, proves the importance of considering the risks of the external and internal environment, as well as a methodology for determining the risks and opportunities for organizing the real sector of the economy is presented.
Effect of styrene content on mechanical and rheological behavior of styrene butadiene rubber
Authors: Wang Li’e , Luo Zhu , Yang Le , Wang Hai , Zhong Jincheng 
Published: December 2020

Abstract
Styrene butadiene rubber(SBR) consists of two random polymerization units, styrene and butadiene. As a rigid segment, styrene chain provides strength and rigidity to the rubber. The content of styrene in SBR directly affects its strength and stiffness. In this paper, the effect of styrene content on the fatigue characteristics and rheological properties of SBR have been investigated. The stress relaxation of SBR was reduced and the cross-linking density of butadiene was increased with the increasing styrene content. Especially the dynamic fatigue life of precracked SBR samples was obviously prolonged via slow down crack growth rate when the styrene content increased, which was accompanied by an augment in the value of J-integral and tearing energy in the case of a same gap extension length. At the initial stage of crack growth, the growth of secondary crack played an important role in the growth of main crack, and when the main crack accelerates, the growth of main crack itself dominated. On the other hand, the glass transition temperature obviously increased with the increase of styrene content.
The effect of magnetic field on Linac based Stereotactic Radiosurgery dosimetric parameters
Authors: Nedaie H Ali , Gholami Somayeh , Longo Francesco , Banaee Nooshin , Hassani Mohssen , Sarfehnia Arman , Pang G 
Published: December 2020

Abstract

Objective: MR-linac machines are being developed for image-guided radiation therapy but the magnetic field of such machines could affect dose distributions. The purpose of this work was to evaluate the effect of a magnetic field on linac beam dosimetric parameters including penumbra for circular cones used in radiosurgery. Methods: Monte Carlo simulation was conducted for a linac machine with circular cones at 6 MV beam. A homogenous magnetic field of 1.5 T was applied transversely and parallel to the radiation beam. Percentage depth dose (PDD) and beam profiles in a water phantom with and without the magnetic field were calculated. Results: The results have shown that when the magnetic field is applied transversely, the PDDs in the water phantom differ in the buildup region and distant part of PDD curves. The beam profiles at three different depths are all significantly different from those without the magnetic field. The penumbra is greater when a magnetic field has been applied. Conclusion: Linear accelerator-based SRT and SRS use small circular cones. The beam penumbra for these cones can change in the presence of a magnetic field. The perturbation of dose distribution has been also observed in a patient plan due to the presence of a magnetic field. The results of this study show that dose distributions in the presence of a magnetic field must be considered for MR-guided radiotherapy treatments.
Comparative study on application of 177Lu-labeled rituximab, tetulomab, cetuximab and huA33 monoclonal antibodies to targeted radionuclide therapy
Authors: Zakaly Hesham MH , Mostafa Mostafa Y A , Dzholumbetov Sergey , Issa Shams A M , Tekin H O , Erdemir R Uslu , Zhukovsky M 
Published: December 2020

Abstract

Purpose Dose coefficients from rituximab, tetulomab, cetuximab, and huA33 monoclonal antibodies labelled with the radionuclide 177Lu were estimated for human organs and tumours via a theoretical simulation based on experimental results. Methods The real experimental results were obtained from radiopharmaceutical distribution in hairless mice. Using the Sparks and Aydogan method, the cumulated activity for humans was recalculated. The simulation was used to assess the behaviour of MAbs labelled with 177Lu after injection into the human body. The average absorbed doses were calculated for the most exposed organs and tissues. Results The huA33 monoclonal antibodies (MAbs) labelled with 177Lu (Lu-rituximab, Lu-tetulomab, Lu-cetuximab, and Lu-huA33), presented the maximum nuclear transformation per Bq intake for the main organs (blood, kidneys, liver, lung, and spleen, as well as for a tumour) The absorbed dose in the liver is three times lower for Lu-huA33 compared to the other drugs. In the case of cetuximab, the spleen received the lowest dose compared to the other drugs. The dependencies on absorbed dose for the alveolar, bronchioles, bone surface, heart wall, kidneys, liver, lung, lymphatic nodes, and spleen, are presented. For tumours, the absorbed dose for each drug is calculated separately for a sphere of unit volume by using the information on the injected dose. Conclusion, The ratios of the dose coefficient for the tumour to each organ, indicate that lutetium-177 can be recommended for targeted radionuclide therapy since the dose per tumour is much greater than the dose per organ.
Can Biological Control Overcome the Threat From Newly Invasive Coconut Rhinoceros Beetle Populations (Coleoptera: Scarabaeidae)? A Review
Authors: Paudel Sulav , Mansfield Sarah , Villamizar Laura F , Jackson Trevor A , Marshall Sean D G 
Published: December 2020

AbstractThe coconut rhinoceros beetle (CRB: Oryctes rhinoceros Linnaeus) is one of the most damaging pests to coconut and oil palms in Asia and the Pacific Islands. Adults bore into the crown and damage developing fronds, which affects tree development and yield. The insect is native to South and Southeast Asia and was inadvertently introduced into the Pacific in 1909. It has since spread to several Pacific island nations and territories, causing significant economic impact on these important coconut and palm-growing regions. In the 1950s and 1960s, an international biological control effort was initiated to search for and release natural enemy species. Release of the Oryctes rhinoceros nudivirus Huger (OrNV) and the species complex of Metarhizium Sorokin (Hypocreales: Clavicipitaceae) was successful in controlling CRB in its invaded range. Recently a new biotype of the beetle, known as CRB-G, has spread into the Pacific Islands causing unprecedented levels of damage due to the failure of previously successful biological control agents (BCAs) to suppress this biotype. The re-emergence of CRB as a serious pest warrants a rigorous re-evaluation of potential BCAs and a new search for effective natural enemies if necessary. In this article, we review literature on CRB to 1) analyze past introductions of BCAs and their effectiveness; 2) identify potentially important natural enemies and their geographical origins; and 3) assess possible approaches for utilization of BCAs against the new wave of CRB invasion. Research gaps and directions deserving future attention are highlighted and a strategy for renovation of biological controls for CRB suggested.
Trusting in Somalia’s stateless money: The persistence of the Somali shilling
Authors: Little Peter D 
Published: December 2020

Abstract
In 2016, the Federal Government of Somalia (FGS) announced plans to re-launch the Somali shilling (SoSh), which had its last official printing before the state collapsed in 1991. The article takes this pivotal moment to address the following three questions: (i) Why has the stateless SoSh persisted? (ii) Why is Somalia considering re-introducing an official currency at this point? (iii) What do Somalia’s monetary experiences tell us about relationships among ordinary citizens, elites, and the state in Africa? The article offers an explanation based on a theory of social trust to account for the persistence of the SoSh. Unlike other studies that mainly emphasize a risk aversion attribute to explain the reliance on the trusted and familiar under conditions of precarity, this approach shows how trust can be scaled to explain important macro-level phenomena, such as export trade and nationalism. It proposes that the Somalia story is relevant to other African cases where public trust, state sovereignty, and monetary systems are weak and contested. Finally, the paper concludes that a lack of trust in the FGS and its ability to ensure the value of a new SoSh means that many Somalis are better off with their fragmented currency system rather than a monetary experiment likely to further destabilize an already volatile environment.
Comparing the Efficacy and Safety of Intralesional Verapamil With Intralesional Triamcinolone Acetonide in Treatment of Hypertrophic Scars and Keloids: A Meta-Analysis of Randomized Controlled Trials
Authors: Wang Pu , Gu Luosha , Bi Hongsen , Wang Qifei , Qin Zelian 
Published: December 2020

Abstract

Background
Clinical treatment of hypertrophic scars (HSs) and keloids is often unsatisfactory. Intralesional injections of triamcinolone acetonide (TAC) and verapamil are widely used to treat HSs and keloids, but their efficacy and safety are controversial.

Objectives
The aim of this study was to conduct a meta-analysis of the effectiveness and safety of verapamil and TAC in the treatment of HSs and keloids.

Methods
Embase, Google Scholar, and PubMed were searched for randomized controlled trials (RCTs) from inception to February 2020. RCTs that evaluated treatment effects with the Vancouver Scar Scale or reported adverse effects were included. The continuous data and the dichotomous variables were analyzed as mean difference (MD) and relative risk (RR), respectively.

Results
Seven RCTs (461 patients) were included. Compared with verapamil, TAC rapidly changed the ∆height (MD = 0.07; P &lt; 0.05) and ∆pliability (MD = 0.23; P &lt; 0.05) after the first session, but subsequent treatments resulted in no significant differences in the ∆height, ∆pigmentation, ∆vascularity, and ∆pliability. Although total adverse effects (RR = 0.42; P = 0.1) were not significantly different, in the subgroup analysis the incidence of telangiectasia (RR = 0.04; P &lt; 0.05) and skin atrophy (RR = 0.10; P &lt; 0.05), but not pain (RR = 1.27; P = 0.77), was significantly lower with verapamil than with TAC.

Conclusions
Verapamil may be an effective substitute for TAC. Although total adverse effects did not change, the incidence of telangiectasia and skin atrophy was lower with verapamil than with TAC.

Level of Evidence: 4