Дослідження рольової диференціації як методу формування команди проекту

According to the basic principle of self-developing systems, the interaction parameters of two opposing tendencies of the system operation can be distinguished – the conservative tendency and the changing tendency. It explains the balance of the two activity tendencies of team members – the ability to conserve and the ability to change.On the basis of the Belbin’s model, each participant’s role structure is determined by means of which the participants’ activity tendencies are determined with use of Lotka, Volterra and Gause’s self-developing systems. This system is considered according to the types of interactions such as “cooperation” and “competition”.The equilibrium point of role activity trends is determinedto have the most minimal impact that determines the subsequent state of the system maximally. It is shown that the role differentiation of the effective team does not always depend on the number of participants. Each participant may combine the multiple roles that can lead to the balance of conservative and changing tendencies. It defines the conditions of effective work in operational and development in management of project operation and development.Выявлены особенности командно-ролевой структуры проекта. Рассмотрено применение саморазвивающихся систем Лотки–Вольтерры– Гаузе с учётом типов взаимодействия «сотрудничество» и «конкуренция» при формировании команды проекта. Показаны возможности математического моделирования тенденций ролевой активности участников команды проекта. Определена точка равновесия тенденций ролевой активности, в которой минимальное воздействие максимально определяет последующее состояние системы.Виявлено особливості командно-рольової структури проекту. Розглянуто застосування саморозвиваючих систем Лотки–Вольтерри–Гаузе з урахуванням типів взаємодії «співпраця» і «конкуренція» при формуванні команди проекту. Показано можливості математичного моделювання тенденцій рольової активності учасників команди проекту. Визначена точка рівноваги тенденцій рольової активності, в якій мінімальний вплив максимально визначає подальший стан системи

The Research on Role Differentiation as a Method of Forming the Project Team

According to the basic principle of self-developing systems, the interaction parameters of two opposing tendencies of the system operation can be distinguished – the conservative tendency and the changing tendency. It explains the balance of the two activity tendencies of team members – the ability to conserve and the ability to change.On the basis of the Belbin's model, each participant's role structure is determined by means of which the participants' activity tendencies are determined with use of Lotka, Volterra and Gause's self-developing systems. This system is considered according to the types of interactions such as “cooperation” and “competition”.The equilibrium point of role activity trends is determinedto have the most minimal impact that determines the subsequent state of the system maximally. It is shown that the role differentiation of the effective team does not always depend on the number of participants. Each participant may combine the multiple roles that can lead to the balance of conservative and changing tendencies. It defines the conditions of effective work in operational and development in management of project operation and development

The Effect of EOR Technologies on the Composition of Recovered Crude Oil

Изучено влияние методов повышения нефтеотдачи на состав и свойства извлекаемой тяжелой высокосмолистой нефти Усинского месторождения (Республика Коми). Установлено, что под действием композиции Нетрол в нефти произошло увеличение содержания насыщенных углеводородов и смолисто-асфальтеновых веществ, за счет снижения содержания ароматических углеводородов. В результате воздействия композиции НИНКА также возросло содержание насыщенных углеводородов, но снизилось содержание смолисто-асфальтеновых веществ. Комплексное воздействие пара и композиции НИНКА привело к возрастанию содержания насыщенных и ароматических углеводородов, снижению плотности нефти.The effect of EOR technologies on the composition and properties of recovered crude oil was studied using crude oil from Usinskoye oil field (Komi Republic), which has high viscosity and high content of resins and asphaltenes. It is found that the Netrol system injection brings about an increase in the content of saturated hydrocarbons, asphaltenes and resins and a decrease in the content of aromatic hydrocarbons. As a result of the NINKA system injection, the saturated hydrocarbon content of crude would also increase, while the asphaltene and resin content would decrease. The application of the NINKA system in combination with thermal-steam treatment is found to cause an increase in the contents of saturated and aromatic hydrocarbons and reduction in the density of the studied crude oil

The Effect of EOR Technologies on the Composition of Recovered Crude Oil

Изучено влияние методов повышения нефтеотдачи на состав и свойства извлекаемой тяжелой высокосмолистой нефти Усинского месторождения (Республика Коми). Установлено, что под действием композиции Нетрол в нефти произошло увеличение содержания насыщенных углеводородов и смолисто-асфальтеновых веществ, за счет снижения содержания ароматических углеводородов. В результате воздействия композиции НИНКА также возросло содержание насыщенных углеводородов, но снизилось содержание смолисто-асфальтеновых веществ. Комплексное воздействие пара и композиции НИНКА привело к возрастанию содержания насыщенных и ароматических углеводородов, снижению плотности нефти.The effect of EOR technologies on the composition and properties of recovered crude oil was studied using crude oil from Usinskoye oil field (Komi Republic), which has high viscosity and high content of resins and asphaltenes. It is found that the Netrol system injection brings about an increase in the content of saturated hydrocarbons, asphaltenes and resins and a decrease in the content of aromatic hydrocarbons. As a result of the NINKA system injection, the saturated hydrocarbon content of crude would also increase, while the asphaltene and resin content would decrease. The application of the NINKA system in combination with thermal-steam treatment is found to cause an increase in the contents of saturated and aromatic hydrocarbons and reduction in the density of the studied crude oil

Extremely Polysubstituted Magnetic Material Based on Magnetoplumbite with a Hexagonal Structure: Synthesis, Structure, Properties, Prospects

Crystalline high-entropy single-phase products with a magnetoplumbite structure with grains in the μm range were obtained using solid-state sintering. The synthesis temperature was up to 1400 °C. The morphology, chemical composition, crystal structure, magnetic, and electrodynamic properties were studied and compared with pure barium hexaferrite BaFe12O19 matrix. The polysubstituted high-entropy single-phase product contains five doping elements at a high concentration level. According to the EDX data, the new compound has a formula of Ba(Fe6Ga1.25In1.17Ti1.21Cr1.22Co1.15)O19. The calculated cell parameter values were a = 5.9253(5) Å, c = 23.5257(22) Å, and V = 715.32(9) Å3. The increase in the unit cell for the substituted sample was expected due to the different ionic radius of Ti/In/Ga/Cr/Co compared with Fe3+. The electrodynamic measurements were performed. The dielectric and magnetic permeabilities were stable in the frequency range from 2 to 12 GHz. In this frequency range, the dielectric and magnetic losses were −0.2/0.2. Due to these electrodynamic parameters, this material can be used in the design of microwave strip devices

Preparation, phase stability, and magnetization behavior of high entropy hexaferrites

Summary: The polycrystalline SrFe12O19 samples deeply substituted up to at.67% by Al3+, Ga3+, In3+, Co3+, and Cr3+ cations with a high configurational mixing entropy were prepared by solid-phase synthesis. Phase purity and unit cell parameters were obtained from XRD and analyzed versus the average ionic radius of the iron sublattice. The crystallite size varied around ∼4.5 μm. A comprehensive study of the magnetization was realized in various fields and temperatures. The saturation magnetization was calculated using the Law of Approach to Saturation. The accompanying magnetic parameters were determined. The magnetic crystallographic anisotropy coefficient and the anisotropy field were calculated. All investigated magnetization curves turned out to be nonmonotonic. The magnetic ordering and freezing temperatures were extracted from the ZFC and FC curves. The average size of magnetic clusters varied around ∼350 nm. The high values of the configurational mixing entropy and the phenomenon of magnetic dilution were taken into account