Borys Yu. Kozyr, Oleksandr O. Potkin, Mykola V. Fatieiev
The system of control of the marine terminals has been studied on the basis of decomposition of the operating system of the liquid bulk terminal. The basic elements of the simulation model of the terminal cargo flow are determined. Software implementation of the simulation model is carried out by the modular principle, allowing for its integration into the corporate information system of the terminal. The developed algorithms of the simulation model of cargo flows at the liquid bulk terminal are implemented using the Java programming language.
{"title":"Удосконалення механізмів управління морськими наливними терміналами на основі імітаційного моделювання","authors":"Borys Yu. Kozyr, Oleksandr O. Potkin, Mykola V. Fatieiev","doi":"10.15589/jnn20170209","DOIUrl":"https://doi.org/10.15589/jnn20170209","url":null,"abstract":"The system of control of the marine terminals has been studied on the basis of decomposition of the operating system of the liquid bulk terminal. The basic elements of the simulation model of the terminal cargo flow are determined. Software implementation of the simulation model is carried out by the modular principle, allowing for its integration into the corporate information system of the terminal. The developed algorithms of the simulation model of cargo flows at the liquid bulk terminal are implemented using the Java programming language.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132035241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Відповідно до наявних інформаційних платформ управління проектами різного цільового призначення запропоновано інформаційні платформи техніко-технологічного, економічного й організаційного характеру, кожна з яких подана у вигляді інформаційної моделі, яка включає в себе фрейми, що описують структурно-параметричні характеристики об’єктів, а також множини моделей, що дозволяють вирішувати зав-дання управління проектами знешкодження підводних потенційно небезпечних об’єктів.
{"title":"Моделювання інформаційної платформи управління проектами знешкодження підводних потенційно небезпечних об’єктів","authors":"Maksym Hrytsaienko","doi":"10.15589/jnn20170212","DOIUrl":"https://doi.org/10.15589/jnn20170212","url":null,"abstract":"Відповідно до наявних інформаційних платформ управління проектами різного цільового призначення запропоновано інформаційні платформи техніко-технологічного, економічного й організаційного характеру, кожна з яких подана у вигляді інформаційної моделі, яка включає в себе фрейми, що описують структурно-параметричні характеристики об’єктів, а також множини моделей, що дозволяють вирішувати зав-дання управління проектами знешкодження підводних потенційно небезпечних об’єктів.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131702210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The main factors affecting the cost of the project of manufacturing buoyancy materials based on spheroplastics have been identified and analyzed; the materials are intended for various production volumes and different hydrostatic strength. On the basis of these factors, a mathematical model is developed to determine the most cost-effective operation modes of the enterprise producing buoyancy blocks from spheroplastics. It is revealed that the cost of production of the buoyancy materials for shallow depths is only slightly dependent on the depth. Therefore, it is impractical to orient the project of production of buoyancy materials at the operating depths of underwater equipment if they are less than 1 km. The study indicates the presence of the optimal production volume of buoyancy materials, reduction of which is accompanied by a substantial increase of the cost of the finished products, and it does not lead to a considerable reduction in price. It is determined that the optimal monthly production volume depends on the operating depths of underwater equipment and varies from 12 m³ for depths less than 1 km, up to 8 m³ at depths of 5 km. When making decision on the order execution, this allows the project manager to agree with the customer upon the economically feasible minimum volumes of the ordered buoyancy materials and avoid execution of unprofitable orders at the stage of their receipt without time-consuming preliminary calculations.
{"title":"Управління вартістю проекту виготовлення матеріалу плавучості для підводної техніки","authors":"Volodymyr R. Slyvnitsyn","doi":"10.15589/JNN20170211","DOIUrl":"https://doi.org/10.15589/JNN20170211","url":null,"abstract":"The main factors affecting the cost of the project of manufacturing buoyancy materials based on spheroplastics have been identified and analyzed; the materials are intended for various production volumes and different hydrostatic strength. On the basis of these factors, a mathematical model is developed to determine the most cost-effective operation modes of the enterprise producing buoyancy blocks from spheroplastics. It is revealed that the cost of production of the buoyancy materials for shallow depths is only slightly dependent on the depth. Therefore, it is impractical to orient the project of production of buoyancy materials at the operating depths of underwater equipment if they are less than 1 km. The study indicates the presence of the optimal production volume of buoyancy materials, reduction of which is accompanied by a substantial increase of the cost of the finished products, and it does not lead to a considerable reduction in price. It is determined that the optimal monthly production volume depends on the operating depths of underwater equipment and varies from 12 m³ for depths less than 1 km, up to 8 m³ at depths of 5 km. When making decision on the order execution, this allows the project manager to agree with the customer upon the economically feasible minimum volumes of the ordered buoyancy materials and avoid execution of unprofitable orders at the stage of their receipt without time-consuming preliminary calculations.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121873611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The task of optimization of calculation of operating characteristics of asynchronous drives has been solved. It is a part of the complex scientific and applied problem of improvement of calculation of operating processes of marine and industrial mechanisms. The system of correct mathematical expressions for calculation of starting areas of the mechanical and electromechanical characteristics of asynchronous drives is obtained. The expressions address the disadvantages of the traditional formulas by Kloss and Shubenko. The proposed dependencies allow reducing labour intensity of the calculation, extending functional possibilities of the calculation means, improving the accuracy of the calculation of the starting areas. Efficiency and required accuracy of the obtained dependencies are confirmed by the calculations performed and approbation in the educational process.
{"title":"Розрахунок робочих характеристик асинхронного електроприводу","authors":"Valentyn I. Lokariev, Yana B. Volianskaya","doi":"10.15589/JNN20170208","DOIUrl":"https://doi.org/10.15589/JNN20170208","url":null,"abstract":"The task of optimization of calculation of operating characteristics of asynchronous drives has been solved. It is a part of the complex scientific and applied problem of improvement of calculation of operating processes of marine and industrial mechanisms. The system of correct mathematical expressions for calculation of starting areas of the mechanical and electromechanical characteristics of asynchronous drives is obtained. The expressions address the disadvantages of the traditional formulas by Kloss and Shubenko. The proposed dependencies allow reducing labour intensity of the calculation, extending functional possibilities of the calculation means, improving the accuracy of the calculation of the starting areas. Efficiency and required accuracy of the obtained dependencies are confirmed by the calculations performed and approbation in the educational process.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126899869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There have been implemented separation gradient aerosol technologies which take into account all the forces and effects that influence the deposition of finely dispersed particles. Substantiation is provided for the scientific statement of intensification of the gradient processes of the aerosol media transfer in the boundary layers of multipurpose surfaces during cleaning of the dispersed multiphase flows for the development of technical devices enhancing energy saving and ecological purity of power plants. A sectional design scheme and a three-dimensional model of an oil separator in finite elements were developed for calculating the hydrodynamics and separation. The hydrodynamic situation and the trajectory of the particles in the flow section of the oil separator are calculated. According to the calculation of the velocity distribution in the oil separator at G = 100...200 m3/h, the velocity in the coagulation profile does not exceed 10 m/s. On the basis of the results of the static pressure distribution for G = 100, 200 m3/h, it is established that the pressure difference in the separating coagulators reaches 2.5...3.9 kPa, respectively. The calculation results at G = 100...200 m3/h show that the total pulsation effect of precipitation of the highly dispersed particles makes up 25.1%. Using the calculations, a prototype oil separator was created; its experimental studies were performed on the stand in the form of an open-type wind tunnel. The coefficient of the total purification efficiency is determined, which reaches 99.9%. On the basis of the separation gradient aerosol technologies, it is possible to improve cleaners capturing aerosols in various power plant systems. The performed studies allow further developing a line-up of separators for the gas flow rate from 20 to 2000 m3/h.
{"title":"Тривимірне моделювання сепараційних градієнтних аерозольних технологій. Масловіддільники систем суфлювання ГТД з витратою газу до 800 м3 / ч","authors":"Sehriy S. Ryzhkov","doi":"10.15589/jnn20170207","DOIUrl":"https://doi.org/10.15589/jnn20170207","url":null,"abstract":"There have been implemented separation gradient aerosol technologies which take into account all the forces and effects that influence the deposition of finely dispersed particles. Substantiation is provided for the scientific statement of intensification of the gradient processes of the aerosol media transfer in the boundary layers of multipurpose surfaces during cleaning of the dispersed multiphase flows for the development of technical devices enhancing energy saving and ecological purity of power plants. A sectional design scheme and a three-dimensional model of an oil separator in finite elements were developed for calculating the hydrodynamics and separation. The hydrodynamic situation and the trajectory of the particles in the flow section of the oil separator are calculated. According to the calculation of the velocity distribution in the oil separator at G = 100...200 m3/h, the velocity in the coagulation profile does not exceed 10 m/s. On the basis of the results of the static pressure distribution for G = 100, 200 m3/h, it is established that the pressure difference in the separating coagulators reaches 2.5...3.9 kPa, respectively. The calculation results at G = 100...200 m3/h show that the total pulsation effect of precipitation of the highly dispersed particles makes up 25.1%. Using the calculations, a prototype oil separator was created; its experimental studies were performed on the stand in the form of an open-type wind tunnel. The coefficient of the total purification efficiency is determined, which reaches 99.9%. On the basis of the separation gradient aerosol technologies, it is possible to improve cleaners capturing aerosols in various power plant systems. The performed studies allow further developing a line-up of separators for the gas flow rate from 20 to 2000 m3/h.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"33 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123600394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Serhiy V. Kopiika, I. O. Zaharova, Oleksandr H. Yehorov
Characteristics of operation and destruction of the materials of buoyancy blocks of underwater vehicles have been considered. Water absorption, hydrostatic strength and structural heterogeneity of the material are singled out as the main factors determining the design features of buoyancy blocks. The impact of structural parameters of buoyancy blocks on the operational properties of syntactic foam is shown. Recommendations are given as for the adequate shape, size, positioning and fixation of buoyancy blocks made of syntactic foam.
{"title":"Обґрунтування раціональної конструкції блоків плавучості підводних апаратів","authors":"Serhiy V. Kopiika, I. O. Zaharova, Oleksandr H. Yehorov","doi":"10.15589/JNN20170204","DOIUrl":"https://doi.org/10.15589/JNN20170204","url":null,"abstract":"Characteristics of operation and destruction of the materials of buoyancy blocks of underwater vehicles have been considered. Water absorption, hydrostatic strength and structural heterogeneity of the material are singled out as the main factors determining the design features of buoyancy blocks. The impact of structural parameters of buoyancy blocks on the operational properties of syntactic foam is shown. Recommendations are given as for the adequate shape, size, positioning and fixation of buoyancy blocks made of syntactic foam.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130831002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Intensity of the low-temperature sulfuric-acid corrosion when burning standard fuel oil and water-oil emulsions with the water content up to 30.0% has been considered, as well as the dynamics of these processes. The aim of this paper is to analyze the results of the study of the dynamics of the low-temperature sulfuric-acid corrosion, which allows predicting its development during long-term impact of aggressive flue gases. It also enables evaluating the influence of fixed and variable conditions on reliability and durability of low-temperature heating surfaces when burning standard sulfur fuels, as well as water-oil emulsions with water content of up to 30.0%, under exposure to fixed factors (the content sulfur in fuel oil, the air excess coefficient α, the metal temperature tст, the water content in the emulsion) and variable conditions (fluctuations of α and tст). A statistical analysis of the impact of variable operating conditions of convective surfaces with temperatures below the sulfuric acid vapor dew point is carried out. The experimental dependences of the corrosion processes dynamics are obtained. The results of the study of the fuel oil and water-oil emulsion burning are compared. The regression equations obtained on the basis of these studies allowed building dependences of the corrosion rate at different temperatures of the wall, the air excess and time of gas exposure up to 1000 hours. It allowed comparing corrosive zones under the change of these factors and making a conclusion about the possibility of achieving a high boiler efficiency by burning water-oil emulsions.
{"title":"Вплив режимів спалювання рідких сірчистих палив на швидкість низькотемпературної корозії","authors":"Yurii H. Tenditnyi","doi":"10.15589/JNN20170205","DOIUrl":"https://doi.org/10.15589/JNN20170205","url":null,"abstract":"Intensity of the low-temperature sulfuric-acid corrosion when burning standard fuel oil and water-oil emulsions with the water content up to 30.0% has been considered, as well as the dynamics of these processes. The aim of this paper is to analyze the results of the study of the dynamics of the low-temperature sulfuric-acid corrosion, which allows predicting its development during long-term impact of aggressive flue gases. It also enables evaluating the influence of fixed and variable conditions on reliability and durability of low-temperature heating surfaces when burning standard sulfur fuels, as well as water-oil emulsions with water content of up to 30.0%, under exposure to fixed factors (the content sulfur in fuel oil, the air excess coefficient α, the metal temperature tст, the water content in the emulsion) and variable conditions (fluctuations of α and tст). A statistical analysis of the impact of variable operating conditions of convective surfaces with temperatures below the sulfuric acid vapor dew point is carried out. The experimental dependences of the corrosion processes dynamics are obtained. The results of the study of the fuel oil and water-oil emulsion burning are compared. The regression equations obtained on the basis of these studies allowed building dependences of the corrosion rate at different temperatures of the wall, the air excess and time of gas exposure up to 1000 hours. It allowed comparing corrosive zones under the change of these factors and making a conclusion about the possibility of achieving a high boiler efficiency by burning water-oil emulsions.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130522124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Volodymyr S. Blintsov, Dmytro V. Kostenko, Victoria V. Trybulkevich, V. Sokolov
There have been considered the possibilities of using unmanned marine systems as a component of a multipurpose marine unmanned complex for solving the task of covering the situation underwater, at sea and in the air in the exclusive (marine) economic zone, the territorial sea and inland waters of Ukraine.
{"title":"Сучасні завдання створення багатоцільового морського безпілотного комплексу","authors":"Volodymyr S. Blintsov, Dmytro V. Kostenko, Victoria V. Trybulkevich, V. Sokolov","doi":"10.15589/JNN20170203","DOIUrl":"https://doi.org/10.15589/JNN20170203","url":null,"abstract":"There have been considered the possibilities of using unmanned marine systems as a component of a multipurpose marine unmanned complex for solving the task of covering the situation underwater, at sea and in the air in the exclusive (marine) economic zone, the territorial sea and inland waters of Ukraine.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131595383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Use of harbor tugs to assist vessels in berthing operations is a common practice. More often nowadays tugs are used also to provide escort service to large vessels, which cannot maneuver safely in constrained harbor waters without assistance due to their size, or to provide back-up steering ability if the vessel propulsion fails. High level of risk usually inherent to these operations stipulates the study of the tug and ship interaction dynamics. This research deals with mathematical modeling of the towing process, with the focus on azimuthal stern drive, tug maneuvering characteristics and its transverse stability. A mathematical model of an ASD tug in four degrees of freedom is presented in the paper. Following features were specifically considered: thrust degradation due to propeller interaction, transverse stability on large angles of heel, interaction via a hawser with an independently steered vessel, and the hawser tension in a dynamically unstable situation. Software developed on the basis of the proposed mathematical model allows modelling girting and capsizing of a tug. In addition, it gives an opportunity to access dangerous tug handling modes, which can be presented during tug masters training or used in the towing operations risk analysis.
{"title":"Математичне моделювання роботи буксира з азимутними рушіями на тросі","authors":"Oleksandr Pipchenko","doi":"10.15589/JNN20170202","DOIUrl":"https://doi.org/10.15589/JNN20170202","url":null,"abstract":"Use of harbor tugs to assist vessels in berthing operations is a common practice. More often nowadays tugs are used also to provide escort service to large vessels, which cannot maneuver safely in constrained harbor waters without assistance due to their size, or to provide back-up steering ability if the vessel propulsion fails. High level of risk usually inherent to these operations stipulates the study of the tug and ship interaction dynamics. This research deals with mathematical modeling of the towing process, with the focus on azimuthal stern drive, tug maneuvering characteristics and its transverse stability. A mathematical model of an ASD tug in four degrees of freedom is presented in the paper. Following features were specifically considered: thrust degradation due to propeller interaction, transverse stability on large angles of heel, interaction via a hawser with an independently steered vessel, and the hawser tension in a dynamically unstable situation. Software developed on the basis of the proposed mathematical model allows modelling girting and capsizing of a tug. In addition, it gives an opportunity to access dangerous tug handling modes, which can be presented during tug masters training or used in the towing operations risk analysis.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124651366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A mathematical model of two connected elements of flexible links (FL) has been developed. This model allows creating the algorithm for computation of the FL dynamics at substantial FL movements. The mathematical model of the marine lash system (MLS) allows solving the following problems: 1. Calculation of variations in the FL shape and tension forces in the process of maneuvering of the tugboat and the underwater vehicle taking into account the sea waves, underwater currents, wind forces affecting the tugboat, sea depth and its variation in a given water area, as well as the FL mass and elastic properties. 2. Calculation of the relative position of the tugboat and the underwater vehicle in the process of their maneuvering. 3. Calculation of the resonance conditions of the FL tension and the maximal FL loads for assessment of its strength in the process of maneuvering of the tugboat and the underwater vehicle. 4. Calculation of the MLS maneuvering conditions causing formation of loops on the FL. 5. Calculation of the MLS maneuvering conditions causing vibration of the high-drag flexible links.
{"title":"Математична модель двох зв’язаних елементів гнучкого зв’язку морської прив’язної системи","authors":"Kostiantyn S. Trunin","doi":"10.15589/JNN20170201","DOIUrl":"https://doi.org/10.15589/JNN20170201","url":null,"abstract":"A mathematical model of two connected elements of flexible links (FL) has been developed. This model allows creating the algorithm for computation of the FL dynamics at substantial FL movements. The mathematical model of the marine lash system (MLS) allows solving the following problems: 1. Calculation of variations in the FL shape and tension forces in the process of maneuvering of the tugboat and the underwater vehicle taking into account the sea waves, underwater currents, wind forces affecting the tugboat, sea depth and its variation in a given water area, as well as the FL mass and elastic properties. 2. Calculation of the relative position of the tugboat and the underwater vehicle in the process of their maneuvering. 3. Calculation of the resonance conditions of the FL tension and the maximal FL loads for assessment of its strength in the process of maneuvering of the tugboat and the underwater vehicle. 4. Calculation of the MLS maneuvering conditions causing formation of loops on the FL. 5. Calculation of the MLS maneuvering conditions causing vibration of the high-drag flexible links.","PeriodicalId":128354,"journal":{"name":"Collection of Scientific Publications NUS","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127844191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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