bluuebunny/crossref_metadata_2025 huggingface dataset:
Strategic Analysis of Economic Development Tendencies in the Arctic Zone of Republic Sakha (Yakutia)
Authors: Chiryaeva N
Published: April 2020

In order to create a new development strategy for the Arctic zone of the Republic of Sakha (Yakutia), the drivers of economic growth and the features of the influence of various types of state participation on the population of these extreme territories are analyzed. The performed strategic analysis made it possible to identify trends in the most important indicators of the development of the Arctic districts of Yakutia, to study the dynamics of economic indicators, to identify factors affecting the sectoral structure of the economy and its sustainable growth. Estimated indicators for comparative analysis are presented for two groups of the Arctic districts of Yakutia over a long period of time, including the Soviet period and post-Soviet development in a market economy.
Influence of the Industry on Traditional Economy: in the Context of Social and Economic Development of Rural Territories (on the Example of the Village of Iyengra of Neryungrinsky District of the Republic of Sakha (Yakutia))
Authors: Pavlova M B , Mikhaylova V V
Published: April 2020

Article is devoted to the analysis of problematic issues of influence of the industry on traditional economy. The methodology of a research considers internal factors of social and economic development of settlements and gives an idea of economy of northern and Arctic territories as unity of three sectors – traditional, corporate (market) and transfer (state). The problem of influence of the corporate (industrial) sector on traditional economy on the example of three-sector model of social and economic development of the village of Iyengra of Neryungrinsky district of RS(Ya) is considered. Methods of the studying and the analysis of statistical documentation included in observations, a conversation and poll are applied. An assessment is given to social and economic development of the rural settlement, the traditional industry of economy of the village, the population relation to integration processes, state of environment. Conflicts of interest between the industry and the population, a common ground for establishment of mutual consent are specified.
Zhatay Fleet Operations Base: a Comprehensive Development Project and its Socioeconomic Significance for the Arctic Regions of the Republic of Sakha (Yakutia)
Authors: Sibileva E , Kontorusova S
Published: April 2020

Development of transport infrastructure in the Lena River Basin is crucial to the continuous delivery of vital cargo to the dwellers of the Republic’s Arctic regions, to investment projects, to Emercom’s and Defense Ministry’s bases. Today, the National Arctic Development Program plans an investment project titled Fleet Upgrade and Shipbuilding for Inland Transportation of Cargo in the Lena River Basin; the project will use the Zhatay Shipyard reconstructed at the Zhatay Fleet Operations Base (ZFOB), which is a structural multifaceted technical management unit of OAO Lena United River Shipping Company (LORP). This is a comprehensive large-scale projects that will require its participants to be well-coordinated. Inauguration of the high-tech Zhatay Shipyard at the reconstructed and retrofitted Zhatay FOB will enable the constructing and upgrading passenger and cargo ships; the shipyard will also be able to assemble river-marine vessels from the kits produced by the shipbuilders of AO United Shipbuilding Corporation or by other Russian shipbuilders under cooperation agreements. The project is expected to create about 1,300 jobs. It is estimated to cost 5.75 billion rubles, 4.1 billion of which will be invested by the federal budget.
Substantiation of the Need in Evaluating Effectiveness of Use of Land Resources for the Agricultural Sector in the Sakha Republic (Yakutia)
Authors: Danilova L I , Byastinova L M
Published: April 2020

The authors discuss effectiveness of use of land resources for the agricultural sector in the Sakha Republic (Yakutia) and substantiation of the need in evaluating effectiveness thereof. They analyzed the contemporary condition of the republic’s land resources and of the main sectors of industry in the countryside - agriculture. The authors also analyzed the interconnection of the primary agricultural indicators and the quality of land resources. The results demonstrate a rather low effectiveness and negative trends of primary indicators. Therefore, the need in evaluating effectiveness of use of land resources is substantiated. Also, there is a need in improving effectiveness of use of land resources in agriculture at the present time by means of continuous intensification.
Transactional Analysis of Agrarian Sector
Authors: Barkhatov V , Bents D , Silova E
Published: April 2020

The Russian agrarian market shows a difficult situation. We research this market with the institutional point. The food chain is rather long. We can see the following subjects: “farmers – manufacturers – wholesale merchandisers – retailers – ultimate consumers”. We can’t deny “egoistical” motive of each subject to increase his own utility (and this idea is under the neoclassical paradigm). If we speak about the first four subjects, this utility is in the desire to sell the product to the following link in a chain at higher price. We can consider such desire normal if the price extra charge at each stage of the agrarian chain doesn’t exceed on average 5% over the cost value (in one of the reports the President of Russia has said such trade extra charge as “normal” profitability for food sellers). Meanwhile, we see an essential distortion at the stage “farmers – manufacturers”. We suggest to consider this phenomenon through the institutional theory which operates with categories “contractual relations”, “behavioral opportunism”, “transactional costs”. The companies- manufacturers often hold a monopoly position at the local markets. As a result farmers have no opportunity to realize a product at reasonable price. Thus, production of a qualitative, environmentally friendly and healthy product becomes almost impossible. Farmers have no motivation to produce a qualitative and safe product, and in general to produce it. The efficiency of contractual interactions of a food chain is low already on start. Thus, researching the agrarian market since 2015, we have come to a conclusion concern such phenomenon as “a transactional rent”. This category has been introduced for scientific use. Using this category we point to the institutional imperfection of the agrarian market. More over in the article the we make quantitative analysis using developed technique. It allows to estimate the level of transactional costs at each stage of food chain.
Evaluation of the Impact of Climatic Changes on the Development of Agriculture of European North Russia
Authors: Druzhinin P , Potasheva O
Published: April 2020

Observations indicate that global warming may be currently taking place, which has accelerated markedly since the 1970s. Research on the implications of climate change has shown that the greatest effect is to be expected in the following sectors of the regional economy: agriculture, transport infrastructure, utilization of coastal resources, energy, forestry, tourism, fish industry and water. Studies for Russia, which is overall a relatively cold country, showed that climate change has a direct effect on production in agriculture and it may be either positive or negative in different regions of the country. To assess the effect of climate change on agriculture in European Russia we distinguished climatic zones with similar temperature and precipitation values. Several models of the dynamics of agricultural production and yield depending on climatic characteristics, farming practices and socio-economic characteristics were built. As a result, the positive impact of climate change on crop yields in Russia has found only partial confirmation. A greater effect can be manifested by increasing the level of management and transition to modern technologies, and gradual shift to the north of grown crops. This will accordingly require increased investment in agricultural science to implement new projects in line with the changing external environment.
Features of Machine-Technological Stations Organization in the System of Agro-Industrial Production
Authors: Terentyev S E , Gnezdova J V , Semchenkova S V
Published: April 2020

The creation of modern machine-technological stations (MTS) causes a lot of disputes about the effectiveness of their operation. The majority of MTS are commercial enterprises, independent of services consumers, which, in the conditions of decreasing equipment availability of agricultural producers, turned out to be monopolists comparing with them. Agricultural enterprises could not become founders of MTS and do not have the ability to influence on the activities of service enterprises directly. The efforts of the stations are greatly aimed to get their own profit and much lesser to increase the efficiency of served arms. Many experts have the opinion that the achievement of economic well-being of MTS often is due to the decreasing of the economy of services consumers.

As a result of the direct economic effect of the MTS activity - the profits of agricultural producers are not yet available. The reason of this, in our opinion, is explained by the fact that the relations of stations are not connected with final results of agricultural production. The efficiency of their functioning will become economically viable only when their own profitable activities ensure the effectiveness of services for agricultural producers. The purpose of the research is to justify the need of creation machine-technological stations in the system of agroindustrial production.
Economic Methods of Integral-Matrix Analysis of Hydrogen Energy Development Strategies
Authors: Shchelkonogov A , Shashkin V , Guo S , Ke H , Cao Y
Published: April 2020

The paper identifies the problems of combining traditional and existing alternative fuels. It is shown that post-carbon energy determines a multi-criteria approach to the choice of hydrogen fuel production technology based on hybrid technologies. The methods of integral-matrix analysis for the selection of hydrogen production technology according to the criteria taking into account the trends in the development of the market, technology and products are suggested. The content of the article reveals the results of the analysis of trends in the new industrialization of industry in estimates of the development of hydrogen energy. Models and methods for assessing the stability of the hydrogen industry are supplemented.
Economic Cluster Analisis and Fuzzy Modelling of Operation of Wind Power Plants in the Arctic
Authors: Aliukov S , Shishkov A , Ma J , Li M , Wang S
Published: April 2020

Renewable resources are of particular importance in decentralized power systems typical of the Arctic and remote areas of a number of countries. One of the fastest growing renewable energy sources is kinetic wind energy used for power generation. Over the past two decades alone, the installed capacity of wind turbines in the European Union has increased hundreds of times, with a significant reduction in the cost of generation. The article discusses some aspects and features of wind power development in Northern and remote areas. In some areas of the Arctic coastal and remote areas, the wind speed has a fairly large value; on the one hand, it is considered highly favourable conditions for the economically efficient use of wind energy. On the other hand, wind speed exceeding certain limits can cause significant loads to be placed on wind turbines components and parts, resulting in the destruction of the device as a whole. The article discusses the possibilities of improving the reliability and durability of wind turbines operating under extreme loads. In addition, as a rule, wind farms are used where the wind speed is characterized by appropriate values, in places with low terrain and a shortage of natural resources. On the basis of methods of multidimensional scaling, cluster analysis, fuzzy modelling, the article investigates the possibilities for determining the most suitable, from the point of view of economic efficiency, places for installation of wind farms with optimization of schemes of their joint application. The technique of determining the wind characteristics and taking into account these characteristics to identify regions with the most favourable conditions for the use of wind turbines and the development of wind power in general are shown.
Development’s Features of Industrial Production in the Region
Authors: Akhmedyanova G F , Pishchukhin A M , Semenov E A
Published: April 2020

The work is devoted to the analysis of the regional industry level development in the Orenburg region. The state of the oil and gas industry, power industry, metallurgy, mechanical engineering and light industry has been considered. The analysis showed that since 2012, the region is characterized by multidirectional dynamics of the sectoral structure industry, in the face of fluctuations — either growth or production decline in individual sectors. There are positive moments. Orenburg region has successfully implemented its solar potential over the past 5 years. During this period, the region has earned 7 solar power plants with a total capacity of 200 MW. Further, the paper proposes a method for multidimensional assessment of the industry state. It consists in building a beam of coordinated development of industries and determining in the plane called theequal contributions plane of two parameters: distance and angle of rotation. The distance is estimated as the distance between the point representing the given moment and the point of intersection of the beam of coordinated development with the plane of equal contributions. The angle of rotation is determined between the line of intersection of the constant plane on the main type of production (oil production) with the plane of equal contributions and the line passing through the point of intersection of the beam of coordinated development with the plane of equal contributions and representing the point
Innovative Development of Mechanical Engineering Complex Based on Project Management
Authors: Dubrovina N A , Gorelova N Y
Published: April 2020

The relevance of the study is driven by peculiar features of the current economic model characterized as rapidly changing and requiring maximum flexibility from all market agents. In this situation such factors as scientific, technological, innovative, informational development come to the fore. Accordingly, it is necessary to choose adequate methods for the management of key industries, which include mechanical engineering. In our opinion, for the purposes of mechanical engineering further development it is necessary to develop a strategy for the scientific and technological development of the entire complex aimed at modernizing the material and technical base, organization, technology, socio–environmental sector, personnel and information support of production, increasing the investment attractiveness of mechanical engineering and expanding the markets for domestic products sale. To overcome the crisis, the main strategic objective of the Russian government should be to recover and ensure intensive growth of domestic markets for industrial products consumption. This is only possible with the implementation of many large infrastructure projects that will ensure domestic demand. Project management, which gradually replaced traditional management, is based on the preliminary development of a comprehensive system model in order to achieve the original goal and is aimed at implementing this model within the specific time frames. It is important to keep in mind that the objective in project management is usually distinguished by elements of novelty and, therefore, the project itself is original, non–traditional. The concept of project portfolio management should be defined separately. Project portfolio management helps determine the optimal level of investment for each project, which should be well combined with each other and not contradict the overall strategic plan. The result is the best balance between current and new strategic initiatives. At the same time project portfolio management is a tool for achieving strategic goals (including industry goals).
Biological Aspects of Economic Efficiency of Crop Farming
Authors: Glinushkin A P , Startsev V I , Startseva L V
Published: April 2020

A robust increase in crop production has lately been associated with the government incentives to agricultural producers to comply with production technologies, which include the use of synthetic fertilizers in the required quantities. Heavy crop yields remove nutrients from the soil, thus, necessitating supplementary fertilizing, which affects the soil, it being a developed agricultural ecosystem. The plant nutrient uptake from the soil becomes difficult, phytotoxic effect may occur. Certain measures for soil rehabilitation should then be taken, the most important of which is the use of green manure and minor nutrients as a basis of the symbiotic relationship between organic and mineral constituents of the soil.
Innovations as a Factor for the Sustainable Functioning of a Construction Company
Authors: Shreyber A , Abramov I
Published: April 2020

Competitive threats from international and domestic construction companies compel construction industry participants to intensify innovative processes with a view to improving the profitability of construction operations, expanding their offerings and upgrading the quality of their products.

The introduction of assorted innovations is thus a way of enhancing the efficiency of construction operations.

In terms of development levels, innovations may be classified into global, national, regional and industrywide.

A construction company can introduce innovations by:

- Consuming or using materials, machinery or equipment;

- Making construction products in the form of units, buildings or structures;

- Applying products to control corporate organizational structures and construction operations. Focused on technological innovations, this paper identifies those in the heaviest demand, used most frequently in construction operations, exploring the impacts of construction operation innovations on the sustainable functioning of a construction company. The authors propose a research and engineering hypothesis to the effect that the expert assessment method is instrumental in identifying innovations with positive impacts on construction operations, while ensuring the sustainable functioning of a construction company, subject to the correct selection of experts and assessment criteria.
Peculiarities of Steam Treatment of Food Plant Products and Simulation Thereof
Authors: Verboloz E I , Raspopov D V , Leu A G , Nikolik O I
Published: April 2020

Methods of water steam treatment of disperse food raw materials at various pressures have become widely used in the processing industry. Humidity and temperature conditioning, drying and blanching are typical non-stationary processes progressing at a uniform or non-uniform (decreasing) rate. This article describes an analytical solution to the system of differential equations of joint heat and mass transfer outlining distribution of heat and moisture fields at the material heating stage. The following peculiarities of the food raw materials processing have been considered to set the appropriate boundary value problem: some of the processed food quality horticultural products (harvested potatoes to be dried, washed fruits or pretreated sunflower seeds prior to vegetable oil expression) were included with the group of products characterized by a tight-fitting subspherical fruit (seed) coat, which is why we consider them a single, homogenous, and isotropic particle with averaged thermophysical properties. The difference in temperatures of the heated air and the treated material results in condensation and formation of a liquid film on the surface of the objects, which is why heat is spontaneously transferred from the condensate film to the body primarily on account of heat conductivity and moisture distribution from the periphery to the center. The issues of storing agricultural plant products closely related to the discussed ones are no less important. Rational natural resource management globally acknowledged as the dominant economic development trend presumes the fullest possible use of processed human-consumed plant products. For instance, vegetable proteins prevail over meat ones in food patterns in most countries. In Japan, this ratio is 78.3/21.7, in Ukraine - 72.3/27.7, in the USA - 65.3/32.9, in the United Kingdom - 61.?/32.4, in Germany - 65.3/34.7, in France - 60/40, in Canada - 68.4/31.6, in China - 87.3/12.7, in Italy - 74.6/25.4. Adequate storage of the harvested plant products prepared for processing significantly contributes to the solution of this problem. Given the considerable amount of root vegetables, grain and seeds in food plant products, it is clear why foodstuff manufacturers show interest to conditions and modes of storage thereof. Modern warehouses used for these purposes are equipped with various means to ensure required hygrothermal modes and even to control composition of the environment within the units intended to store preserved bulk root vegetables, grain and seeds. That is why the discussed problems of analytical evaluation of storage conditions for various steam-treated bulk agricultural raw materials are of genuine interest.
Experimental Study of Porous Metals in Heat Exchangers
Authors: Stepanov O , Rydalina N , Antonova E
Published: April 2020

Use of porous materials in heat exchangers makes them more efficient in a smaller form-factor. Heat exchangers based on porous materials have uses in various industries, e.g. in power engineering. The latter currently relies on steam-to-water heat exchangers that load the environment. One promising way to make heat exchangers more eco-friendly is to use porous materials. An experimental setup was made to study heat transfer in porous materials. The setup enabled the research team to find the degree of cooling the hot coolant (water) passing through a porous heat exchanger. For comparison, experiments also involved a second heat exchanger (tubular, non-porous). The paper presents the installation diagram and the experiment methodology. It also reports the processed experimental data, draws conclusions, and suggests further experimentation.
Brickwork Chemical Corrosion Features
Authors: Zheldakov D Yu
Published: April 2020

The use of multilayer enclosing structures in modern construction poses a new task of studying the mutual influence of all materials of multilayer structures on the durability of the structure as a whole. Masonry is the oldest and most representative multi-component envelopes. This work is devoted to the study of the processes of chemical destruction, taking into account the mutual influence of building ceramics (clay bricks) and cement-sand mortar. The article deals with the main process of destruction of materials, based on the destruction of the amorphous part of the brick under the influence of calcium hydroxide, penetrating into the brick of cement-sand mortar, where it is produced in the process of dehydration of calcium silicates and aluminosilicates (leaching reaction). We consider the side processes of the first type, taking into account the presence in the amorphous phase of brick oxides of alkali and alkali-earth metals.
Causes of the Quartzite Lining Destruction during Operation of the IChT Furnace and Ways to Prevent Them
Authors: Kukartsev V A , Kukartsev V V , Tynchenko V S
Published: April 2020

Causes of cracks formation in quartzite lining of induction crucible kiln with industrial frequency during iron smelting and events of insight of liquid metal into lining are considered in this article. Demonstrable presentation of this events, which was recognizing during research of causes of anticipated kilt out of its exploitation through a fault lining during its shake-out are considered. The main reasons for the formation of cracks in the lining during its operation, and ways to prevent them are given. The most difficult situations from the point of view of the correct operation of an industrial-frequency induction crucible furnace are described.
Production Engineering of Parts by Cold Stamping
Authors: Gerasimova A , Belelyubskii B
Published: April 2020

In the scientific article presents the results of the finite element modeling of cold extrusion of carbon steel, the stress-strain state of massive dies at high cyclic stresses characteristic of the cold extrusion of steel are presented. The possibility of significant amplification of dies in their working area by creating a variable external pressure from the rims of a special design is shown. Dies banding with variable external pressure, proportional to the internal pressure in the die, is aimed at increasing the technical resource of the tool.
Sensitivity Analysis of Adaptive Holographic Fiber-Optic Acoustic Emission Sensors during the Registration of Acoustic Waves In a Plate
Authors: Bashkov O V , Romashko R V , Bashkov I O , Zaikov V I , Khon H , Solovev D B
Published: April 2020

Paper presents the results of studying the features of recording acoustic emission waves by fiber-optic sensors. Fiber-optic sensors are used as an elastic medium that receives acoustic emission waves. Optical fibers were built between the layers of the polymer composite material during the manufacturing process. The measuring system is constructed on the basis of an adaptive interferometer. Optical fibers are part of the interferometer optical scheme. The elastic wave acting on an optical fiber changes its optical density, changing the interference pattern of the optical beam. The work of the holographic interferometer based on the fact that the interference pattern, formed by the object and reference light beams, is a dynamic hologram that is constantly recorded in the photorefractive crystal during the elastic action on the fiber. Sensitivity of fiber-optic sensors based on an adaptive interferometer allows recording acoustic emission waves. The acoustic emission waves were generated by the Hsu-Nielsen source. A significant difference in the speed of sound is explained by the anisotropy of the properties of the composite material. The structure and density of the material’s fibers in different directions are different. The wavelet transformation was used to form the signal front.
PCM Bearing Capacity Prediction Criteria Development Based on Registered AE Parameters
Authors: Bryansky A A , Bashkov O V , Bashkov I O , Solovev D B
Published: April 2020

In this paper a result of the registered acoustic emission (AE) signals during static deformation and destruction of the polymer composite material (PCM) study is presented. Analysis of the total AE accumulation, changing of the Ib-value and probability densities of peak amplitudes and median frequencies of the AE signals was done. An approach for the PCM destruction stages identification and the bearing capacity determination based on the energy and frequency analysis of the AE signals wavelet decomposition is proposed.
The Effects of Vibration Treatment in the Process of Welding on the Structure of Metal of Seam Weld
Authors: Fayrushin A M , Chernyatyeva R R , Yakovleva D N
Published: April 2020

Today a sufficient number of works are known, which indicate the positive effect of vibrational oscillations superimposed both during the welding process of the structure and after it.

The article discusses the features of the influence of low-frequency vibration oscillations during the welding cycle on the structure of the weld metal of steel 09G2S.

Experimental survey of the influence of the vibration effect of the weld pool in the welding process on the physicomechanical properties of the metal of welded joints made it possible to prove the positive effect of this technology, manifested in an increase in the strength and fatigue endurance of the welded joints.

This fact will allow expanding the application of vibration processing technology in the process of welding metal structures.
Trunk Pipeline Throughput Enhancement Using the Continuous Additive Dosing Technology
Authors: Chekardovskaya I A , Bakanovskaya L N
Published: April 2020

The article covers the peculiar features of using drag-reducing additives to solve the problems of gas condensate transport, namely: reducing energy consumption on current condensate pipelines and reducing capital costs while increasing the pipelines throughput. The authors have developed an optimization method of drag-reducing additive dosing to decrease the energy consumption of pumping in a particular section of a condensate pipeline, justified and proposed a technical solution for the use of continuous drag-reducing additive dosing.
Reinforcing of Composite Materials on the Basis of Fresh Ice and Natural Origin Additives
Authors: Syromyatnikova A S , Bol’shakov A M , Alekseeva A V
Published: April 2020

Possibility of application fibrous additives of a natural origin in an ice matrix as the reinforcing additives is investigated. As a matrix, fresh ice water was used, reinforcing additives — hay fiber 10 mm long and 0.5–1 mm thick and basalt fiber produced by Plant of Basalt Materials LLC (Pokrovsk, Sakha Republic (Yakutia)) with a thickness of 9–12 µm and 40 mm long. The volume content of hay fibers was 10, 20, 30%. The density of chaotic styling of basalt fiber in a single layer was about 3 mm / mm2. Magnitude of breaking load was determined experimentally when tested according to three-point bending pattern. It is shown, that introduction fibrous additives a natural origin leads two - to triple increase of ultimate bending strength of fresh ice. During the tests, unreinforced ice samples fractured brittle along the loading force, and reinforced samples showed viscous fracture and an increase in breaking load due to the mechanical adhesion of reinforcing fibers to ice matrix.
Comprehensive Study on Coded Modulation Schemes for Future Communication
Authors: Liu Longzhou
Published: April 2020

In the future communication technology standards, wireless communication in high mobility scenes is extremely important, but the fast fading of the channel and the Doppler frequency shift caused by high-speed mobile will seriously affect the overall performance of the system. The communication performance indicators such as bit error rate (BER), computational complexity and transmission capacity will degrade. This paper introduces several coded modulation schemes of joint coding modulation diversity (JCMD), orthogonal time-frequency space (OTFS) modulation and space-frequency block code (SFBC), and uses bit interleaved coded modulation (BICM) as a reference for comparison. The simulation results show that the JCMD scheme has the best block error rate (BLER) performance under different moving speed and code rate conditions. And JCMD has strong robustness, can achieve large performance gains even under the conditions of high speed and high code rate.
Magnetic Solid-Phase Extraction Based on Different Modified Materials for the Determination of Lead in Environmental, Food and Biological Samples
Authors: Shan Xiaoyue , Shi Yanpeng , Tan Siwei , Shao Ji , Su Kewen , Zhang Ling , Ye Haipeng
Published: April 2020

Lead is one of the most important trace heavy metals, which is damaged to human beings and environment. Hence, the determination of lead in environmental, food and biological samples is extremely important to guarantee the public health and safety. This paper summaried and compared the magnetic solid-phase extraction based on different modified materials for the determination of lead in environmental, food and biological samples.
Grafting Cosmetic Active Ingredients for the Functionalization of Cosmetotextiles
Authors: Han Jinju , Liu Lei , Fan Zhanhua , Zhang Zhaolun , Yang Shuyan , Tang Ying
Published: April 2020

Consumers’ rising demands for functional fabrics have led to the burgeoning of a revolutionary type of “cosmetotextiles”, which are textile products containing various cosmetic active ingredients for energising, skincare and beautifying. Phytochemicals and/or novel formulations are required for both product development and customer attraction. Encapsulation and grafting/coating technologies have provided these cosmetic ingredients with effective stabilization, sustained dermal delivery and prolonged dermocosmetic efficiency. This article provides an overview of the development history, popular cosmetic ingredients and manufacturing techniques of cosmetotextiles.
Spatial Distribution Analysis of Convenience Stores in Kaifeng City Based on POI Data
Authors: Yang Xiqing , Hou Hanping , Yang Jianliang , Li Dandan , Zhang Kexin , He Ting , Han Lu , Wang Yue , Li Xue
Published: April 2020

In this paper, the visual analysis of POI data is used as the research method. The Arc GIS series software is used as a research platform. 567 convenience stores in Kaifeng City are selected as samples to analyze the layout characteristics and influencing factors of Kaifeng retail industry. This paper aims to plan and guide the layout of convenience stores in Kaifeng from the perspective of the government, propose improvement measures, improve the service level of convenience stores, provide convenience for residents, provide some suggestions and reference for the development of its regulatory role and the creation of “smart city”.
Analysis and Kinetics of Co-Pyrolysis of PE and Enteromorpha
Authors: Wang Huashan , Zhang Xinyue , Wang Yuekang
Published: April 2020

In order to study the better disposal of the main components of waste plastics,co-pyrolysis it with Enteromorpha in a nitrogen atmosphere,.with the increase of the mass fraction of Enteromorpha, the main cp-pyrolysis temperature range of polyethylene (PE) and Enteromorpha shifts toward the high temperature zone. Polyethylene (PE) and Enteromorpha co-pyrolysis have a certain inhibitory effect. When the polyethylene (PE) mass fraction is 75%, the relative inhibition value can reach 19.4%. The kinetic analysis shows that the first-order kinetic model can well describe the co-pyrolysis process of the two, and there is a dynamic compensation effect.
Fast Simulation of Cloth-Rigid Body Based on PBD
Authors: Huang Sijie , Zang Hui
Published: April 2020

Because the excellent performance of the position-based dynamics (PBD) method, the PBD gains popularity among cloth simulation and computer animation. Based on unified adaptive PBD, we apply collision constraints to cloth and rigid body models to speed up the process of collision detection between cloth and complex models, we conduct a bounding box high-level collision culling detection algorithm. Moreover,friction is calculated by the speed of the cloth to make the cloth simulation more realistic. Compared with continuous collision detection (CCD), our method improves the simulation speed several times.The experimental results demonstrate that we has the wide range of applicability and the the simulation effect is stable.
Magnetic FeS2/Fe3O4composites as adsorbents for chromium (VI) removal from aqueous solution
Authors: Chen Guobao , Lu Yuanhang , Zhang Xinmin
Published: April 2020

In this study, novel magnetite composites FeS2/Fe3O4were facilely synthesized by a one-pot hydrothermal method. It is applied as an adsorbent for chromium (VI) removal from aqueous solution. The pyrite (FeS2) and the magnetite (Fe3O4) were also synthesized and compared. The analysis results of XRD, SEM and XPS confirmed the formation of FeS2/Fe3O4composite. The magnetic characterization revealed that the saturation magnetization value for FeS2/Fe3O4was 50.89 emu/g, which is helpful for the separation. The effects of the initial pH values, adsorbent dosage, contact time and reaction temperatures on the Cr (VI) removal by various materials were studied and contrasted in detail through experiments. It is found that the composite FeS2/Fe3O4had high removal ability for Cr (VI) at high pH. 86.1% of Cr (VI) removal efficiency was obtained when the pH value is at 12.0, the contact time is 3h and the temperature is controlled at 35 °C. FeS2component was inferred as the major contribution for the composite to the Cr (VI) removal. FeS2/Fe3O4displayed a promoted Cr (VI) removal efficiency with the increasing temperature and its absorption process is proved spontaneous.
RETRACTED: Study on Microstructure and Mechanical Properties of Nitrided and Titanized Carbon Steel
Authors: Xu Jiawei , Tang Lingbo , Chen Long
Published: April 2020

In this paper, the structure of nitrided titanium on carbon steel is studied, the interaction mechanism of nitrided titanium is analyzed, and the orthogonal process design of nitrided titanium is given. The mechanical properties of nitrided layer in different depth were studied, and the microstructure and mechanical properties of nitrided layer under different temperature and nitrogen-hydrogen ratio were analyzed. The microstructure, surface morphology, wear marks and element composition of the nitrided layer were observed and analyzed by means of Om, XRD, SEM and EDS, and the gradient hardness distribution, friction and wear properties of nitrided layer were tested and analyzed.
Characterization of Steelmaking Zinc-Containing Converter Dust
Authors: Zheng Zihao , Xiong Guo , Liu Xin , Zhou Yunhua , Yang Xiaojin , Dan Jiayun , Chen Tong
Published: April 2020

Due to the increasing use of scrap galvanized steel in converter process, the content of zinc in converter dust is rising gradually as a result of zinc enrichment and accumulation, which will cause problems to dust recycling from long-term production stability and safety. The aim of this study was to reveal the chemical, physical, mineralogical and morphological characteristics of zinc-containing converter dust. The study shows that the concentration of Fe, Ca, Zn is 52.43~54.25%, 5.97~6.09%, 3.60~3.73% respectively. The phases such as Fe3O4, Fe2O3, FeO, ZnFe2O4, ZnO and C were detected through XRD analysis. Granulometric analysis indicated that, the particle size distribution is very concentrated and almost 80% of particles are finer than 1μm. Further researches on integrated utilization process are necessary in order to develop effective method to recycle zinc-containing converter dust.
Study on Optimization of BP-GA Method Applied to Shaft Laser Cladding Repairing Technology
Authors: Zhu Hongyu , Tong Yuan , Ge Zhili
Published: April 2020

Laser cladding technique, which has the characteristics of refining microstructure, minimum deformation and high safety during processing, could enhance the strength of work-piece, shorten the repairing cycle and reduce the restoration cost by roughly sixty percent on shaft repairing. Process parameters optimization plays a key role in repairing quality and cost in laser cladding technique. This paper studied the application of YAG laser cladding technique on shaft repairing and which had important sense to popularize laser cladding technology. Through the experimental research and Artificial Neural Network-Genetic Algorithm approach, this technological process for laser cladding showed the capability to improve efficiency and quality of shaft repairing and reduce repairing cost with guarantee of enough bonding strength and no cracks in restoration area by optimization on key parameters like work-piece rotation speed, defocusing amount, powder stream rate.
Isolation of a Heat-Resistant Aspergillus Fumigatus and Identification of its Cellulase
Authors: Sui Ming , Qu Peng , Zhu Yusong , Zhao Silei , Tao Ruixiao
Published: April 2020

Cellulose-degrading fungi have the characteristics of large enzyme production, high enzyme activity, comprehensive enzyme composition, and most of them are secreted and extracted extracellularly. Therefore, studies on cellulase-producing bacteria at home and abroad have focused on fungi. Due to its thermal stability, the high temperature resistant cellulase can meet the high temperature conversion conditions in production, which is beneficial to the improvement of cellulose degradation efficiency. This chapter mainly carried out the separation screening and identification of heat-resistant cellulase-producing fungi, and the analysis of cellulase protein components and concentrations in fermentation products by Nano LC-ESI-MS/MS.
Research on Fuzzy PID Control of Physical Exercise Supporting Robot Speed Control System
Authors: Gou Xiaoping , Zhang Wanjun , Zhang Jingxuan , Zhang Jingyi , Zhang Jingyan
Published: April 2020

Physical exercise assisted robot speed regulation has higher requirements on dynamic characteristics of the system and faster response speed, and there are many uncertain factors in the process of climbing athletes in the process of climbing the building. Single closed-loop negative feedback control based on traditional control strategy System speed regulation is unsatisfactory. Based on the above problems, this paper establishes the mathematical model of the fuzzy PID control system of the physical exercise assisted robot speed control system, and designs a double closed loop speed control system based on fuzzy PID, and compares it with the traditional PID control; The sprint speed is given to the sinusoidal speed given curve by referring to the stability of the elevator climbing process and the comfort of the occupant. Using Matlab simulation, the simulation results show that in the physical training robot speed control system, the fuzzy PID control is more stable than the traditional PID control start and braking process, with higher comfort, smaller error and higher precision. Stair climbing has a strong use value and brings good value to the economy and society.
Research on Key Technologies of Elders’ Exoskeleton Robot Assisted by Physical Exercise Based on Fuzzy PID Control
Authors: Gou Xiaoping , Zhang Wanjun , Zhang Jingxuan , Zhang Jingyi , Zhang Jingyan
Published: April 2020

In the past, walking aids (such as crutches and walking aids) widely used by the elderly in physical exercise had relatively single functions, low intelligence, insufficient safety and comfort, and could not meet the needs of users for independent living. Therefore, it is necessary to apply robot technology to the field of traditional walking aid equipment and design a more intelligent, comfortable and safe walking aid robot system. The gait control of the exoskeleton robot assisted by physical exercise for the elderly is studied, and an algorithm based on fuzzy PID is proposed. Firstly, a fuzzy PID control algorithm for the exoskeleton robot assisted by physical exercise for the elderly is given. Secondly, membership functions are selected according to the parameters of the robot joint angle error and error variation. Finally, combined with practical operation experience, a fuzzy rule table is established, and online self-tuning of PID parameters is completed. The experimental results show that the fuzzy PID control method can make the exoskeleton robot move smoothly and realize the gait control of the robot initially.
3D Printing Technology and Its Application in Industrial Manufacturing
Authors: Hao Botao , Lin Guomin
Published: April 2020

3D printing technology is widely used in industrial manufacturing, medical biology, and cultural creativity because of its direct molding.Based on the characteristics and advantages of 3D printing technology, this paper takes the 3D printing technology molding principle and process flow as the research object, and analyzes 3D Application of printing technology in automotive manufacturing, aerospace and electrical industries.
Research on Combination Optimization of Preventive Maintenance of Mechanical Equipment
Authors: Zhang Yangyang , Jia Yunxian , Wu Weiyi , Yin Xuyang , Ding Shenhu
Published: April 2020

Modern mechanical equipment has powerful function and complex structure, which puts forward new requirements for equipment maintenance. Aiming at the new requirements of improving maintenance efficiency and reducing maintenance cost, a decision model of combined maintenance is proposed. First of all, determine the specific maintenance parts and their maintenance methods, then get the distribution of maintenance cost and service life according to the historical data, with reliability as the constraint, combined with the length of service replacement model to optimize the preventive maintenance of the action device of a certain type of mechanical equipment, which can effectively reduce the maintenance cost and improve the maintenance efficiency.
The development of laser drilling: A review
Authors: Wang Chongxu , Wang Qingtao , Qian Qiudong , Di Baojun
Published: April 2020

Laser drilling is of great significance for metal parts production, aerospace parts processing, precision chip manufacturing, etc. In recent years, drilling technology based on new laser devices has become an international research hotspot for its advantages of high speed, high accuracy and low thermal damage. In this paper, the laser drilling is compared with other drilling methods, and the influencing factors and application trends are introduced. At the same time paper introduced the main research on the model and theory of laser drilling at home and abroad. The important effects of thermal effect and molten material on drilling and the latest research progress are introduced.
Internet of Vehicles Based on TrustZone and Optimized RSA
Authors: Wang Zhaoyang , Zuo Min , Yao Shuangshun , Aihemaiti Nijiati
Published: April 2020

In recent years, the problem of data leakage in Internet of Things applications has become a major social issue, causing strong concern in all aspects. Especially for today’s popular car networking technology, if the driving data and other information is stolen, it will not only expose personal privacy and personal information, but also can even harm life safety. At the same time, some manufacturers tamper with the collected vehicle data, in order to forge false vehicle performance and deceive consumers. In the light of the data security risks faced by current Internet of Vehicles applications, based on the TrustZone architecture, this paper builds a trusted execution environment, uses timestamp authentication technology, and introduces Rabin, Huffman coding and random components, respectively, from the perspective of improving encryption speed and reducing the size of ciphertext files, to optimize the traditional asymmetric RSA algorithm, thus to construct a secure data acquisition method of Internet of Vehicles based on TrustZone and optimized RSA, which realizes the information security of the data collection of the vehicle network data. The experimental environment was built based on raspberry PI 3B experimental board, and the test and comparative experiment were conducted. The experimental results show that the method can encrypt the vehicle driving data efficiently and safely, prevent the attacker from stealing and tampering with the data, and ensure the data security of the collecting terminal. The optimized RSA algorithm improves the encryption speed while ensuring security, and the ciphertext file is smaller, which is more suitable for the embedded environment with large data volume and limited hardware computing capacity.
Hybrid Stacking Integration of Multi-Sensor Navigation Module with WLFO and Thick Film Process
Authors: Wang Gang , Xia Chenhui , Liu Dachuan
Published: April 2020

A hybrid stacking integration of multi-sensor navigation module with WLFO and thick film process was demonstrated. With wafer level fan-out packaging and stacked LTCC substrates, the GNSS, MEMS IMU, magnetometer and altimeter were integrated in one single module, the MEMS inertial sensors and ASIC chips were overlapping integrated with WLFO process as a multilayer wafer and diced, then the diced MEMS-ASIC modules, as well as the accessory circuits were pattered and mounted on several LTCC substrates as a drawer structure to accomplish the final system. The size of inertial sensor module is 10mm×5mm, and the entire navigation module is with size of 26.7cm3 and weight of 36g, meanwhile, with a high performance, the multi-sensor module can achieve low cost and high performance simultaneously. This module can be utilized for reliable navigation and gesture perception of micro UAV/UUV, automotive and other minimized platforms.