Portfolio stability ensuring: an emerging chaos case (on the example of Ukrainian agroholdings)

2021 ◽  
pp. 65-91
Author(s):  
Zoia Sokolovska ◽  
Oksana Klepikova ◽  
Semenov Anatoly
Keyword(s):  
System Model ◽  
Economic Systems ◽  
Investment Portfolio ◽  
Tional Development ◽  
Mathematical Basis ◽  
Investment Activity ◽  
Evolutionary Equations ◽  
The Sustainable Development ◽  
Proposed Model ◽  
Motion Mode

The purpose of this article is the study of large companies' investment activities on the example of agricultural holdings in Ukraine. The belonging of the studied ob-jects to the complex dissipative economic systems with the emerging chaotic be-haviour is proved. The conditions and measures of ensuring the balance of the company's investment portfolio are studied. The involvement of chaos theory is proposed as a mathematical basis of the studies. The proposed model of agro-holding investment activity dynamics is presented by the system of differential equations and realized using the MatLab software platform. Numerical modelling of the investment processes dynamics in accordance with different values of management parameters is carried out. Transition scenarios of the system to a chaotic motion mode with the emergence of a strange Lorentz attractor are fore-cast. Scenarios of experiments on the model in order to ensure sustainable propor-tional development of production and logistics subsystems of the agricultural hold-ing and the formation of its investment portfolio are proposed. The behaviour di-agnostics system model on the basis of evolutionary equations is aimed at increas-ing the efficiency of making corrective investment decisions for the sustainable development of the agricultural holding.

Destructive of deviation and economic deprivation of innovative development of enterprises of Ukraine: displays and possibilities of leveling

2018 ◽  
pp. 57-72
Author(s):  
Irina Tkachenko ◽  
Maryna Lysytsia ◽  
Viktoria Sektymenko
Keyword(s):  
Modern World ◽  
Economic Systems ◽  
Innovative Development ◽  
Economic Deprivation ◽  
Investment Activity ◽  
National Economic ◽  
Innovative Products ◽  
Economic State ◽  
Innovative Potential ◽  
State Of Affairs

Strategy of successful development of the national economic systems of countries-leaders the last years is closely related to leadership in research-anddevelopments, by appearance of new knowledge, development of hi-tech production and creation of mass innovative products. Development of innovative potential is not only a way of dynamic development and success but also backer-up of safety and sovereignty of country, to her competitiveness in the modern world. The necessity of introduction in Ukraine of європейських standards of life and exit of Ukraine on leading positions in the world defined the aim of Strategy of steady development «Ukraine 2020» approved by Decree of President of Ukraine № 5/2015 from January, 12, 2015 and plans of operating under implementation of Agreement about an association from ЕС, by the obligations of Ukraine in relation to the achievement of national Aims of steady development on a period 2030 to The basic displays of origin of economic deprivation and destructive deviation of innovative development of enterprises, lighted up questions that touch maintenance and ways of improvement of strategic management of enterprises innovative activity in the system of institutional structure of forming of innovative behavior, are certain in the article. Reformation of economy of country must take place in the conditions of maintenance of certain calls and risks, in particular, it is a threat of escalation of the battle operating on east, authenticity of worsening of the external economic state of affairs on world commodity markets, migratory processes, braking, destructive deviation and депривація of investment activity. A human capital, and also knowledge and results of scientific researches, must become basis of the Ukrainian innovative competitiveness.

Analyzing the Russian tool-making industry within the sustainable development concept

2020 ◽  
Vol 16 (4) ◽  
pp. 662-677 ◽  
Author(s):  
T.N. Ryzhikova ◽  
V.G. Borovskii
Keyword(s):  
Sustainable Development ◽  
Hierarchical Level ◽  
Economic Systems ◽  
Resource Use Efficiency ◽  
The Sustainable Development ◽  
Case Methods ◽  
Hierarchical Levels ◽  
Use Efficiency ◽  
Intensive Development

Subject. The article explores the economic component of sustainable development through the classification of industries from the perspective of assigning the output goods to fixed or current assets, using different types of resources and assessing their condition. It considers factors of production affecting the achievement of the result and determining the development of economic systems at the meso- and micro-hierarchical level. Objectives. The aim is to assess the function of economic systems of different hierarchical levels on the tool-making facilities case. Methods. We apply an approach using general and special methods of comparative and statistical analysis, synthesis and analogies. Results. The paper analyzes the development of the Russian tool-making industry on the basis of resource-oriented approach to assess the functioning of economic systems at various levels. We review interrelations between resource use efficiency, types of sustainable development of economic systems at various hierarchical levels and strategic security of the country. Conclusions. Any development can be considered sustainable, if there is an increment in the intensive development of economic systems at all three levels.

The sustainability of urban renewal projects: a model for economic multi-criteria analysis

2017 ◽  
Vol 35 (4) ◽  
pp. 397-409 ◽  
Author(s):  
Antonio Nesticò ◽  
Francesco Sica
Keyword(s):  
Sustainable Development ◽  
Urban Renewal ◽  
Environmental Sustainability ◽  
Optimal Allocation ◽  
Content Type ◽  
The Sustainable Development ◽  
Compromise Solutions ◽  
Selection Processes ◽  
Proposed Model ◽  
Investment Programme

Purpose The decisions taken today relating to urban renewal interventions are rarely supported by logical and operational methodologies capable of effectively rationalising selection processes. For this purpose, it is necessary to propose and implement analysis models with the aim of promoting the sustainable development of the territory. The purpose of this paper is to define a model for the optimal allocation of scarce resources. Design/methodology/approach The Discrete Linear Programming (DLP) is used for selecting investments aimed at achieving financial, social, cultural and environmental sustainability. Findings The proposed model lends itself to the construction of investment plans on behalf of both types of decision makers, of both a public and a private nature. Research limitations/implications All projects are evaluated according to multi-criteria logics, so that it is possible to find compromise solutions, in accordance with the stakeholders’ different preferences. Practical implications The model, written with A Mathematical Programming Language using DLP logics, is tested – case study – so as to define an investment programme finalised for urban renewal of a vast area. Social implications The proposed econometric model makes it possible to obtain the optimal combination of projects for urban renewal with a view to achieving the sustainable development of the territory. Originality/value Using the proposed model, all projects are evaluated according to multi-criteria logics, so that it is possible to find compromise solutions, in accordance with the stakeholders’ different preferences.

scholarly journals Economic-Mathematical Model for Assessing the Sensitivity of International Innovation and Investment Projects

2019 ◽  
Vol 8 (12) ◽  
pp. 140-145
Keyword(s):  
Mathematical Model ◽  
International Business ◽  
Economic Efficiency ◽  
Net Present Value ◽  
Present Value ◽  
Investment Activity ◽  
Investment Projects ◽  
Internal Parameters ◽  
Proposed Model ◽  
Sensitivity Indicator

International innovation and investment activity occupy a special place in the system of modern international business. The authors propose an economic and mathematical model for assessing the sensitivity of international innovation and investment projects by the criterion of net present value. It is advised to use the obtained sensitivity indicator as an additional one in assessing the economic efficiency of international innovation and investment projects of an enterprise. The proposed model makes it possible to determine the effect of several internal parameters simultaneously on the net present value of the project.

scholarly journals A New Nonlinear Active Disturbance Rejection Control for the Cable Car System to Restrain the Vibration

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Xinyan Hu ◽  
Lina Li
Keyword(s):  
Disturbance Rejection ◽  
System Model ◽  
Active Disturbance Rejection Control ◽  
Active Disturbance Rejection ◽  
The People ◽  
Disturbance Rejection Control ◽  
Proposed Model ◽  
Spring System ◽  
Linear Invariant ◽  
Mass Spring

The safety of the cable car system is very important for the lives of the people. But, it is easily affected by the environment such as the wind which causes the cable car system to have strong vibration disturbance, thus degrading the safety of the cable car system. In this paper, a new nonlinear active disturbance rejection control (ADRC) is proposed to restrain the vibration of the cable car. First, a new two-mass-spring system model is utilized to establish the cable car system model. The new translation vibration nonlinear model is derived by a linear-invariant two-mass-spring system. Then, a special nonlinear fal• is designed to restrain the vibration, and a new high-order nonlinear ADRC is presented for the cable car system. Finally, simulation results verify the feasibility and accuracy of the proposed model.

Biomimetic economy: human ecological-economic systems emulating natural ecological systems

2019 ◽  
Vol 15 (6) ◽  
pp. 772-785
Author(s):  
Unai Tamayo ◽  
Gustavo Vargas
Keyword(s):  
Sustainable Development ◽  
Business Models ◽  
Basque Country ◽  
Ecological Systems ◽  
Economic Systems ◽  
Business Practices ◽  
Levels Of Abstraction ◽  
Sustainable Business ◽  
Content Type ◽  
The Sustainable Development

Purpose The purpose of this paper is to examine the use of biomimicry to inspire sustainable development in economic systems. The research purpose is to explore the link between ecological systems and economic systems to highlight applied environmental solutions. The goal is to propose some driver to develop sustainable business practices inspired on the principles of biomimicry. Design/methodology/approach This paper provides a theoretical approach that builds the basis for a better understanding of the relationship between nature and sustainable economic decisions. The premise is that in the field of sustainable development, strategies based on “learning from nature” are useful. Furthermore, the concept of biomimicry provides principles and tools specifically aimed at design practice. Findings The complexity of economic systems has shown that high levels of abstraction are required when conceptualising problems and explanations related with nature-inspired solutions. Stakeholder engagement and transdisciplinary collaboration are required to face long-term environmental challenges. Moreover, the exploratory analysis applied in this paper appeared suitable to compile existing literature. Practical implications The study provides some general guidelines and empirical approach through case studies that could help decision makers convert nature-inspired alternatives into valuable strategic business opportunities. Although presented practical cases are framed in the local sphere (i.e. the Basque Country), they can serve as references in other international contexts. Social implications New business models should recognize the positive synchronization between well-managed social, environmental and economic systems. Originality/value The proposed ideas deepen the understanding on the sustainable development and the link between ecological and economic systems. In fact, the concept of biomimetic economy has not been dealt with or developed in depth in previous academic works, nor has it been published thoroughly in the field of research.

scholarly journals Nonlinear Synchronous Control for H-Type Gantry Stage Used in Electric VehiclesManufacturing

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2305
Author(s):  
Ran Chen ◽  
Zongxia Jiao ◽  
Liang Yan ◽  
Yaoxing Shang ◽  
Shuai Wu
Keyword(s):  
Tracking Error ◽  
Tracking Performance ◽  
System Model ◽  
Lyapunov Analysis ◽  
End Effector ◽  
Mechanical Coupling ◽  
Synchronous Control ◽  
Linear Motors ◽  
Proposed Model ◽  
Synchronous Error

The H-type gantry stage (HGS) is widely used in electric vehicle manufacturing and other fields. However, resulting from the existence of mechanical coupling, the synchronous control problem of HGS always troubles many engineers. Most synchronization schemes were either engaged in improving each motor’s tracking performance or committed to pure motion synchronization only. However, tracking and synchronous performance are interconnected, because of the mechanical coupling. In this paper, a rigid assumed system model of HGS, concerning the effects of mid-beam rotary inertia, mid-beam stiffness, and end-effector movement, is presented. Based on the proposed model, an adaptive robust synchronous control based on a rigid assumed model (ARSCR) is proposed to improve both synchronous and tracking performance of the HGS. From the Lyapunov analysis, the proposed ARSCR can achieve the convergence of synchronous error and tracking error, simultaneously. An HGS driven by dual linear motors is built and used to perform the experimental verification. The experimental results indicate the effectiveness of the proposed method.

The implementation of sustainable development principles in order to optimize the system of competitiveness of tourist destinations

2016 ◽  
Vol 10 (2) ◽  
pp. 87-100
Author(s):  
Татьяна Рассохина ◽  
Tatyana Rassokhina ◽  
Константин Лебедев ◽  
Konstantin Lebedev
Keyword(s):  
Sustainable Development ◽  
Local Community ◽  
Classical Model ◽  
Graphical Analysis ◽  
Tourist Destination ◽  
The Sustainable Development ◽  
Opposite Case ◽  
Tourist Destinations ◽  
Proposed Model ◽  
Destination Competitiveness

The article is devoted to the development of a model of tourist destination competitiveness based on the principles of sustainable development. It is shown that insufficient attention to solving economic, social and environmental problems through mechanisms of global concept of sustainable development is one of the main factors constraining the growth of competitiveness. The authors prove the following. When creating tourist destinations of different scales, environment for the local community is formed, which should be comfortable and for tourists. In the opposite case, tourist destinations will experience a crisis in its development. The authorial model of ensuring the tourist destination competitiveness, developed on the basis of classical model of M. Porter and G. Dunning. The role of the local community as one of the factors of competitiveness is proved. The analysis of the sustainable development criteria according to UNWTO regarding the creation of conditions for the local community development is conducted, the basic conditions are identified. The authors have conducted an expert survey in destinations of Kaluga region and Tatarstan. On its base the graphical analysis of realization sustainable development criteria concerning creation of conditions for local community activation as the competitive strength of the tourist destination is represented. The main typical problems are identified. Based on it three types of competiveness strategies in the context of sustainable development are specified. The authors have conducted the analysis of indicators of social and tourism development of the Russian regions and have distinguished 10 regions most in need of the implementation of the proposed model. This article provides recommendations for increasing of competitive advantage and sustainable development of tourist destinations.

A Discrete Control System Model for the Traverse Grinding Process

1992 ◽  
Vol 206 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Y Gao ◽  
B Jones
Keyword(s):  
Control System ◽  
System Model ◽  
Discrete Control ◽  
Grinding Process ◽  
Discrete Control System ◽  
Proposed Model ◽  
Mathematical Equations ◽  
Control System Model ◽  
Physical Laws ◽  
Traverse Grinding

A discrete control system model for the traverse grinding process is established on the basis of the physical laws associated with the process together with mathematical equations describing the workpiece radius distribution and parallelism error. The proposed system model is verified by good agreement obtained from a comparison of the theoretical radius distribution and parallelism error values based on the proposed model with those obtained from a traverse grinding experiment. The control system model is suitable for both plain and multi-diameter roller-type workpieces.

Sign in / Sign up

Export Citation Format

Share Document