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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Models for forecasting innovative development of the economy of resort-recreational sphere</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Pavlo Zakharchenko</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Yana Glazova</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Svitlana Zhvanenko</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Stanislav Kucher</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Viktor Mukhin</string-name>
        </contrib>
      </contrib-group>
      <fpage>38</fpage>
      <lpage>51</lpage>
      <abstract>
        <p>In the modern word, resort and recreation is one of the most profitable industries of the economy. Ukraine has a strong resort and recreational potential, the effective development of which can bring the real economic benefits. This requires the formation of a systemic strategy for the development of such systems, an integral part of which are innovations. The purpose of the article is to analyze and develop methods for managing innovation in the resort and recreational economy of Ukraine with its further development. Innovative processes are reflected in the changes in consumption, needs and ways to meet them. In a market environment, needs come in the form of demand, and ways to meet them are mediated by the market in the form of market fluctuations. They are important for predicting the behavior of the market of resort and tourist products. As a result of the study, a model of the mixing scenario in the conditions of innovative changes and market fluctuations and the evolutionary process of development of the resort and recreational system was built. The study of the chaotic dynamics of such a system was performed; practical criteria for evaluating the location of the system in the area of chaos intersection is obtained.</p>
      </abstract>
      <kwd-group>
        <kwd>Resort and Recreation Industry</kwd>
        <kwd>Innovation Processes</kwd>
        <kwd>Innovation Development</kwd>
        <kwd>Market Variability</kwd>
        <kwd>Chaos</kwd>
        <kwd>Chaotic Dynamics Model</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>-</title>
      <p>
        In today's health economy, resort and recreation are one of the most lucrative areas of
the economy. For many countries, they have become not only a constantly growing
source of financial income, but also due to the attraction of millions of tourists, the
infrastructure of these areas begins to develop more actively, creating new additional
jobs. Ukraine has a strong resort and recreational potential, the effective development
of which can bring real economic benefits. Therefore, the recreational sphere should
take one of the leading places in the structure of the economy of the country, in the
process of market transformation of the economy [
        <xref ref-type="bibr" rid="ref1 ref2">1, 2</xref>
        ].
      </p>
      <p>However, despite the rich resort and recreational resource base and a wide network
of tourism entities, Ukraine still lacks a clear modern strategy for the development of
resorts that meets global and European standards. As a rule, strategies of functioning
and development of resort and recreational complexes have local character and are
focused firstly on the industry of rest and, only then on restoration and treatment. As a
result, the level of development of the resort and tourism industry in Ukraine is one of
the last in Europe, and their degree of the compliance with the environmental
standards, cultural and historical heritage is quite low.</p>
      <p>
        Decreased real incomes, weakened coordination of complexes, as well as lack of
control over the use of natural healing resources have led to a number of negative
consequences, which is expressed in a reduction in the number of visitors by more
than 50%, a significant reduction in bed capacity, high prices for resort and
recreational products. The result was a difficult socio-economic situation of national resorts,
which for many years defined the strategy of survival as the main direction of its
development. Therefore, one of the most important research area in this field is the
development of models for forecasting the innovative development of resorts based on
modern market requirements [
        <xref ref-type="bibr" rid="ref3 ref4">3, 4</xref>
        ]. Thus, the identification of determinants and
modern mechanisms for managing sustainable development through innovation is
becoming increasingly apparent.
      </p>
      <p>
        Trends in world economic development show that currently more than half of the
gross domestic product is produced in the services sector. More than 40% of direct
investment in the world economy is accounted for by trade, banking and financial
services, the resort industry and tourism. World practice shows that the resort and
tourism industry in terms of profitability and dynamic development is second only to
the extraction and refining of oil and gas. According to the World Tourism
Organization (UNWTO), the resort and tourism business provides 10% of the turnover of the
services market, it accounts for 7% of total world investment and 5% of all tax
revenues [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ]. Therefore, the national resort and tourism sector should be considered as one
of the main components which fills the budgets, which will contribute to the
development of innovation processes, the creation of new resort and tourism products and
technologies.
      </p>
      <p>
        The high level of competition in the market of resort and recreational products, the
need for qualitative changes in the organization of management to meet consumer
demand more flexibly, the need for modern recreational products and increase the
level of service, require Ukrainian resorts to expand innovation, which is aimed at
optimal development of recreational potential and will allow to create a strategy of
regional innovative development and the domestic industry of resorts and tourism [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ].
2
      </p>
    </sec>
    <sec id="sec-2">
      <title>Literature review</title>
      <p>
        The problem of innovative development of economic systems has deep foundations in
the general economic theory. It is directly related to the problems of formation,
development and change of economic systems, which have been studied in the works of
many scientists over a long period of time. In the process of studying the innovative
development of resort and tourist systems, the authors relied on theoretical
developments contained in the works of P. Drucker, R. Solow, J. Stiglitz, J. Tinbergen, J.
Schumpeter and other scientists [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ]. Among the researchers who pay much attention
to the effects of the relationship between innovation and market components of
economic processes should be noted J. Keynes [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ] and J. Hicks [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ], as well as J. Muth
[
        <xref ref-type="bibr" rid="ref10">10</xref>
        ], R. Lucas [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ], A. Strickland, R. Toaster, J. Johnson [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ].
      </p>
      <p>Let’s consider the main scientific and practical approaches to the development of
models of innovative activity, which have become widespread today.</p>
      <p>
        The result of the first attempts to describe the innovation process was the
emergence of a linear model that represents the process as a sequential passage of stages of
basic researches, applied researches, design, production and subsequent diffusion of
innovations [
        <xref ref-type="bibr" rid="ref13">13</xref>
        ]. This model greatly simplified the innovation process, which, in fact,
is not linear. However, the model continues to exist and is widely used. Its popularity
is due to the fact that it clearly reflects the relationship between research work and
launching of a new product in the market.
      </p>
      <p>
        As a result of further research on innovation activity, W. Abernathy and D.
Utterback proposed a model that reflects the close relationship between innovation (the
final product), the innovation process and the company's strategy [
        <xref ref-type="bibr" rid="ref14">14</xref>
        ]. The dynamic
innovation model combines a product life cycle model, a process life cycle model and
various competitive strategies. In the development of the whole system, the authors
identified three phases, each of which has different effect on individual companies,
the market and the resources needed to create innovation. Fast-growing companies
can go through all stages of development very quickly, and when they reach a high
level of productivity, they find that their flexibility and ability to innovate has
significantly decreased. Therefore, sometimes the process of product development should be
frozen or even reversed. Progress cannot be stopped, but companies can put obstacles
in the way of streamlining of production processes. This model helps to identify the
place in the company where innovations are most effective, sources of innovation, the
most appropriate type of innovation and possible barriers to innovation.
      </p>
      <p>In 1985, Harvard University professors W. Abernathy and C. Clark developed a
new method of innovation analysis called transilience maps. Graphically, transilience
maps are presented as a matrix. Transilience maps show the possibilities of innovation
to influence the company's existing resources, skills and knowledge in two different
ways. The first direction focuses on how new technologies and production activities
are organized, and the second direction is related to the activities required by the
company to serve new markets and customers. The model identified two independent
parameters of innovation, namely, technology and the market, and reflects the ability
of innovations to influence the existing competencies of the company (destroy or
strengthen them).</p>
      <p>
        At the same time, S. Klein proposed a more complex model of the innovation
processes – the chain model. The particularity of this model is the selection of five
interconnected chains of the innovation process, describing the different sources of
innovation and related inputs of knowledge throughout the process [
        <xref ref-type="bibr" rid="ref16">16</xref>
        ]. In his work, he
draws attention to the fact that the creation of innovation by its nature is a complex,
chaotic process, and therefore smooth, well-structured linear models distort the
essence of the innovation process. The author considers the forces of the market and the
forces of scientific and technological progress to be the driving forces of innovation.
One of the significant disadvantages of the linear model was the lack of feedback.
There is presence of numerical feedback in the chain model. The advantages of the
chain model are the description of the variety of sources of innovation, which include
the results of research (discovering new knowledge), market needs, existing
knowledge (external to the company) and knowledge gained in the process of learning
from personal experience.
      </p>
      <p>
        The Stage-Gate innovation process model is a clearly structured process of
developing a new product based on a concept developed by NASA, which simplifies the
management of large complex projects. Many researchers have developed this
concept. One of the most famous works on the Stage-Gate model was proposed by R.
Cooper [
        <xref ref-type="bibr" rid="ref17">17</xref>
        ]. The model describes the process of developing a new product, which is
based on a complex system consisting of successive stages ("gates" of the project).
The model focuses on the decision-making process. The innovation process is seen as
linear, with no possibility of returning to previous stages, but each stage is a set of
parallel actions performed by interdisciplinary teams.
      </p>
      <p>The Stage-Gate model represents the creation of innovations as a clearly defined
process. The purpose of the model is to improve the quality of the process by dividing
it into successive phases, which are adjusted if necessary. As a result, a new product
enters the market earlier by eliminating unnecessary measures. The main task in the
early stages is to increase the chances that the product will be commercially
successful. Cooper's model provides a set of tools to manage and optimize the process of
developing a new product.</p>
      <p>
        In 1994, the scientific work of the English economist R. Roswell was published,
which became widespread [
        <xref ref-type="bibr" rid="ref18">18</xref>
        ]. He proposed a classification of models of the
innovation process. In his work, he identified five generations of models of the innovation
process: the model of "technological push" (G1), the model of "market attraction"
(G2), the combined model (G3), the model of integrated business processes (G4), the
model of integrated systems and networks (G5). Each model corresponded to
different stages of economic development of the developed countries. He found that each
new generation of models emerges in response to significant changes in the market,
such as economic growth, intense competition, inflation, stagflation, economic
recovery, unemployment and a lack of resources. Changing the model of the innovation
process requires updating the strategy, changes in the current innovation process and
the creating new market niches. To confirm the found process of evolution of models
of the innovation process, R. Roswell used a U-shaped curve that reflects the inverse
relationship between time and cost in the innovation process.
      </p>
      <p>The linear model of "technological push" (G1) is presented in the form of a causal
chain, at the beginning of which are basic research, and at the end are the production
and dissemination of innovations. In this model, it is assumed that each step produces
a result that is the input resource of the next step, and subsequent steps do not provide
feedback to the previous one.</p>
      <p>The linear model of "market attraction" (G2) is caused by the saturation of the
market with products and the emergence of marketing difficulties. At this time, the
companies’ struggle for market share is intensifying, forcing companies to shift the
focus from research and development to identifying market needs. In the model of
"demand extraction" the impetus for the creation of innovation is the identified need,
and R&amp;D becomes a further step to meet market demands.</p>
      <p>The combined model (G3) shows the importance of both market and technological
factors. Both the results of research and the needs of the market act as a source of
innovation. The model of innovation of the third generation retains a consistent linear
character, but with numerous feedbacks.</p>
      <p>New approaches to the organization of production have led to the emergence of a
new generation of models of innovation processes – integrated business process
models (G4). These models emphasize the importance of integration of research and
development with production and closer cooperation with suppliers and customers.
Different divisions of enterprises have been integrated to create a new product, allowing
the enterprise to reduce product development time and costs. At the same time,
horizontal cooperation (creation of joint ventures, strategic alliances) has significantly
increased.</p>
      <p>The model of integrated systems and networks (G5) focuses on the problem of
resource constraints. This leads to the merging of companies into a network to ensure
flexibility and maintain the pace of development. The strategies are based on the
development of partnership, joint marketing, the transition to "open innovation". The
approach to the innovation process has changed. The companies came to the
conclusion that in order to create innovations, it is necessary to unite not only the various
departments involved in the process, but also to create and strengthen their network
interactions with consumers, suppliers, research laboratories, universities and other
institutions. Also, this period is characterized by extensive use of expert systems,
simulations, nonlinear dynamics, chaos theory.</p>
      <p>
        The Funnel model was developed by S. Wilright and K. Clark [
        <xref ref-type="bibr" rid="ref19">19</xref>
        ]. It represents
the creation of innovation as a process of transforming an idea from a concept to a
real product that meets the needs of the market. The focus of the model is on the
process of finding and selecting ideas. A large number of ideas, which are gradually
processed and evaluated, are the inputs of the model. The most promising ideas will
subsequently be migrated to the new product development process. Graphically, this
process is depicted as a converging funnel.
      </p>
      <p>The closed models of the innovation process were successfully applied in practice
until the end of the twentieth century. They are based on the principle that successful
innovation must be developed within the company, i.e. the company must
independently generate ideas, develop them, conduct research, production, marketing,
distribution and maintance of goods.</p>
      <p>
        Recently, the open model of innovation has become more widespread. The theory
of open innovation defines the process of research and development as an open
system. To create innovation, a company can use a variety of sources of ideas. It should
use both its own research and research conducted by other organizations in the
process of development of innovation. If the identified innovation does not correspond to
the business model of a company, it is necessary not to hide it, but to benefit from its
use by other organizations through sales, distribution of licenses, creation of
subsidiaries, etc. [
        <xref ref-type="bibr" rid="ref20">20</xref>
        ]. The open model of innovation belongs to the fifth generation of
models according to the Roswell classification. Research on the innovation process is
currently mainly related to the development of an open model of innovation, the
various methods and tools used in this model, as well as the specific features of it in
different countries.
      </p>
      <p>
        The cyclical model of innovation [
        <xref ref-type="bibr" rid="ref21">21</xref>
        ] demonstrates that the successful launch of a
new product or service is a nonlinear process involving many cyclical
interdisciplinary interactions between process participants. The cyclical model aligns the
"technology push" model with the "demand extraction" model. The model is a closed loop,
which includes four nodes of change, combined with four interacting cycles.
Together, they form the basis of a complex innovation process that crosses the boundaries of
traditional companies and corresponds to the modern model of open innovation. Since
the innovation process is a closed cycle, it is impossible to say what is at the
beginning and what is at the end of the process - science or market. The innovation process
can start anywhere at any time. Changes that occur in one node cause changes
throughout the cycle.
      </p>
      <p>One of the main models of innovations is the diffusion model of their spread.
According to it, the spread of innovations depends on both the number of firms that have
already implemented innovations and the number of firms that have not yet mastered
them. The lack of a diffusion model to describe markets is due to the fact that in
different areas of the economy coexist technologies with different efficiency. Moreover,
the curves of power distribution of any sphere on the levels of efficiency for different
points in time are similar to each other. Thus, we can talk about the universality of the
"spatial" curve of technology distribution, its stability (invariance) over time.</p>
      <p>
        At the same time, this fact contradicts traditional economic theories, according to
which capital investment should be made only in the most efficient (profitable)
technologies, and therefore the share of low-profit production should be quite small or at
least it should decrease over time, as provided by traditional diffusion model. To
eliminate this contradiction V.M. Polterovich and G.M. Henkin proposed an
evolutionary model of the interaction of processes of technology creation and borrowing,
which allowed to connect these two facts - the logistical nature of diffusion "time"
curves of technology spread and a stable form of "spatial" curves of production
distribution by efficiency levels. They showed that this situation is two sides of a single
mechanism of "dynamic balance" between innovation and simulation processes [
        <xref ref-type="bibr" rid="ref22">22</xref>
        ].
The simulation results showed that a turbulence scenario appears under certain
conditions of innovation diffusion, which is similar to the equation of J.M. Burgers [
        <xref ref-type="bibr" rid="ref23">23</xref>
        ],
and, as a consequence, there is the phenomenon of self-organization.
3
      </p>
    </sec>
    <sec id="sec-3">
      <title>Methodological aspect research of management of innovative processes in the system of resort-recreational sphere</title>
      <p>
        New methodological principles for the study of innovative development of the resort
and recreational industry should take into account the factors of instability and
complexity of the modern market economy. Recently, there has been a growing scientific
interest in new areas in economic theory, which explore the problems of interaction of
linearity and nonlinearity, stability and instability, equilibrium and chaos [
        <xref ref-type="bibr" rid="ref24">24</xref>
        ].
Nonlinearity and instability are considered as sources of diversity and complexity of
economic dynamics. This concept focuses on such aspects of dynamic economic systems
as nonlinearity, instability, bifurcation, chaos.
      </p>
      <p>Of particular interest in the context of innovation development is the chaotic
dynamics that arise in the process of diffusion of innovations. From the point of view of
the theory of evolution, chaos is a natural stage that allows a system to correct its own
shortcomings, when its elements are desynchtonized. When the connection between
the elements of the system weakens and their functions and positions in the hierarchy
of the system change, it has the opportunity to conduct self-organization on the basis
of information known about existing internal and external problems. If chaos as a
period of transformation was absent in the system, then any constructive changes in it
met with high resistance of its elements, for which the current state of the system is
favorable. In this context, periods of chaos in the economy can be seen as effective
bifurcation points, in which there is a transition of the economy to an innovative path
of development in times of crisis.</p>
      <p>Significant technological shifts in socially significant areas often lead to poorly
predicted socio-economic consequences, being periods of poorly managed innovation
chaos. Let’s introduce the following definition of such a process: innovation chaos is
a period in time and space during which fundamental transformations in economic,
scientific and technological spheres take place, which are caused by new scientific
discoveries and innovative directions of development. In the process of innovation
chaos, the investment potential of the respective markets significantly increases. Thus,
it is very important to model the processes of emergence and functioning of
innovation chaos as a way to ensure maximum socio-economic effect for the development of
the national economy in general and the resort and recreational economy in particular.</p>
      <p>It should be noted that the ability to self-organize is also an important characteristic
of complex resort and recreational systems. This property means the possibility of
arbitrary ordering of the internal structure of the system, which is manifested in the
establishment of distant correlations between its elements, i.e. increasing the rigidity
and range of connections. The resort system, on the principle of saving internal
resources, strives for an equilibrium state with the maximum level of disorganization,
depending on the external actions that the system is forced to resist. Accordingly, the
stronger the external actions, the stronger should be the interconnected elements of
the resort and recreational system and the higher its level of self-organization. Under
the influence of external anti-entropy actions in the process of self-organization, the
structural connections within the system increase their range and rigidity, thus
generating flows of negative entropy for their elements. And those, in turn, either increase
the level of their own organization, or collapse, producing an increase in entropy.
Having reached the maximum rigidity of relations, the resort-recreational system
acquires the properties of self-organized criticality. In this state, the system is most
sensitive to all external and internal influences. Even the slightest fluctuations can
cause a bifurcation process in such a system and lead to the destruction of the formed
structure, after which a new cycle of self-organization begins.</p>
      <p>The cause of the fluctuations that give rise to self-organization is the intersection of
several chaos. External fluctuations occur due to negative entropy connections from
macrosystems. Internal fluctuations are caused by deterministic chaos, which,
resonating through the rigid connections of the elements of the resort and recreational
system, passes to higher levels. Further, due to tight structural ties, these fluctuations
intensify and move to higher levels of economic development.</p>
      <p>At the heart of self-organization is the desire of resort and recreational complexes
to provide a variety of reactions, adequate to the variety of external influences, in
which the system will be able to implement the adopted strategy to achieve goals.
And the growth of internal entropy is ensured by the use of the positive effect of scale
and the internal relationship of the types of resort and recreational activities, thereby
reducing the cost of resources to ensure the effectiveness of external strategy. Thus,
the main components of the functioning of resort and recreational systems are
optimized. It can be argued that the adaptive behavior of the resort and recreational
system, its structure and management are formed at the intersection of two types of
fluctuations: internal innovation and external market variability. This is a manifestation of
the intersection of several chaos, on the verge of which there is self-organization.</p>
      <p>Innovation as a kind of chaos can be a stimulus and a mechanism for entering to
one of the possible trajectories of development, that corresponds to the internal trends
of the resort and recreational system, which ensures its new quality. This is the
essential importance and constructive role of innovative factors for launching
selforganization processes in the system and preparing it for different development
scenarios. Innovation, as a kind of chaos, is a factor that brings nonlinear systems to their
own structure of attractors.</p>
      <p>Since innovations are an element of chaos in relation to the existing resort and
recreational system, their implementation causes a process of self-organization in the
system, aimed at adapting a new element to the structure. To accelerate its adaptation,
the recreational system produces internal relevant innovations, the relationship
between the elements complicates, the structure of the system changes. At the first stage
of self-organization to ensure the stability of the system, the number of its reactions
(internal innovations) must correspond to the number of external signals due to the
presence of market fluctuations. The system builds a structure in which each external
action corresponds to an element capable of generating internal innovations and
influencing changes in the structure of the system.</p>
      <p>At the next stage, the resort and recreational system is evolving in the direction of
an increasingly orderly state, which is achieved through a hierarchy of elements: the
parameters of order are set, the principle of subordination is included, effective
grouping of homogeneous internal innovations is ensured, which allows to adapt with the
least changes in the structure of the system, and therefore with the least cost. In other
words, at this stage there is an adaptation of the resort and recreational system. The
system is in a state of persistent imbalance, and endogenous innovations that promote
rapid adaptation and self-organization are crucial.</p>
      <p>The resort and recreational system selectively responses to exogenous innovations,
setting a strict regime for their penetration, perceives only the influences that
correspond to its nature, any other influences can have a negative effect until the
implementation of chaos scenarios. Having reached a certain degree of internal strength,
nonlinear systems are activated, they structure the external space in accordance with
its immanent nature and the existing market environment. At this stage, it is necessary
to develop an appropriate management paradigm that would develop appropriate
goals and include adequate internal mechanisms for the development of the resort and
recreational system. Thus, the property of innovation can be considered as a
interruption of the usual order of functioning of the recreational system. The order can be
aggressive, it seeks to suppress any manifestations of the new elements in the system,
including innovation as a form of chaos. Contradictions, conflicts and economic
failures that accompany the development of a complex resort and recreational system
may be associated with this.</p>
      <p>The processes that take place in the market environment have a different nature.
The transition economy, which is in the process of systemic transformation, is
characterized by: qualitative and quantitative change of components (deformation and
extinction of some and the emergence of others); the plurality of states that are
qualitatively different from each other; nonlinearity of development trajectories due to the
rapid change of states. There is a different inertia of the components and the market
environment in general in the process of transformation, which indicates that the time
during which trends persist has different durations. Components of the market
environment of a subjective nature are also subject to changes: there are changes in the
needs of subjects, their interests, motives, stimulus-reactions and behavior change.
This led to increased chaos, disagreement, spontaneity of relationships and increased
market fluctuations in a market transition economy. Thus, the market environment
can be considered as a synthesis of spontaneous market evolution and cyclical and
chaotic changes.</p>
      <p>The above allows us to state that the functioning of the resort and recreational
system in the intersection of deterministic chaos is determined by significant features.
The impact of innovation and external market chaos on the economy of the resort and
recreational system leads to the deformation of its nature. Its chaotic component is
significantly enhanced, cyclicity is significantly modified, in particular, the phases of
the cycle are deformed. Loss of stability of the resort and recreational economy in
conditions of uncertainty and permanent crisis bring the system into a mode of
bifurcation development, which is characterized by frequent changes in the direction of
movement. As a result, abnormalities are observed in their behavior, in particular, the
effect of mixing and the emergence of hyperchaos.
(1)
4</p>
    </sec>
    <sec id="sec-4">
      <title>Methods and results of research</title>
      <p>Let’s consider one of the scenarios that arises in the innovative activities of the resort
and recreational system in the intersection of deterministic chaos on the basis of the
following model.</p>
      <p>(
)
(
(
{ (
)(
)
)
,
)
where – production of an ordinary resort and recreational product; – parameter
that takes into account the growth of product production; – production of an
innovative resort and recreational product; – market fluctuations in demand for resort and
recreational products; – demand inertia parameter; ( ) – market fluctuation
indicator;</p>
      <p>( ) – the place of moving to the edge of chaos.</p>
      <p>
        The results of computer simulation are presented in Fig. 1.
Let’s introduce the following definition: is topological mixing, if for any
two open nonempty sets , there is such a positive integer ( ), that
for each intersection ( ) . This means, that for any given
and nonempty open set all iterations with a large number turns out to be -dense
in phase space [
        <xref ref-type="bibr" rid="ref25">25</xref>
        ].
      </p>
      <p>The unpredictability of the behavior of the resort and recreational system in the
conditions of intersection of deterministic chaos is associated with the instability of
the system regarding small deviations of the initial state. This means that it is
necessary to analyze the evolution in time not of the starting point, but of the initial volume
around this point.</p>
      <p>Let’s consider a small sphere of radius , that surrounds the initial state .
Any point inside the sphere characterizes a small deviation from the initial state. Let's
apply the time-evolution operator and look at the transformation of this small volume
over time. Under the action of the deterministic law of evolution, the sphere of radius
in time will be compressed and at its radius will be decreased to zero. Thus,
if the resort and recreation system is stable, then any small deviation will eventually
fade and the system will return to its original mode.</p>
      <p>The instability of the state leads to an increase in perturbations. At the same time,
if the system is dissipative, there is a decrease in the element of phase volume over
time, which is associated with economic losses. This means that the element of the
phase space is stretched in some directions (which corresponds to the positive
indicators of Lyapunov), and in others – is compressed. Moreover, the degree of
compression prevails over the degree of expansion. That is, any small deviation of the initial
state can be detected in any part of the phase space, which results in mixing in the
entire region of the trajectories.</p>
      <p>The main cause of mixing is the instability of trajectories due to the intersection of
deterministic chaos. This means that a small perturbation of the state must increase
exponentially over time.</p>
      <p>( )
( )
( )
( )
(2)
Where – Lyapunov index. The positive value is proof that the mixing scenario is
implemented in the system. Thus, if the simulation results show that the studied
economic process has a positive Lyapunov index, the consequence will be:
nonperiodicity of any state parameter and autocorrelation function, which decreases over
time.</p>
      <p>Thus, in the case of a mixing scenario in the innovative activities of the resort and
recreational system, it is possible to predict the future state only in the case of a clear
assigning initial conditions. However, given the small, but final error, a deterministic
prediction becomes impossible. The small region of primary uncertainty is blurred by
mixing to the final region in the phase space. This behavior of the basic parameters of
the system is clearly associated with the idea of a random process. The studies show
that a process generated by deterministic laws, in particular the intersection of
deterministic chaos, may have similar properties.</p>
      <p>It should be noted that innovations perform a special function in the reconstitution
system – the function of generating changes, they are a source of self-development
and self-organization of resort and recreational systems, and they are an important
internal process and structural element. To quantify the actions of the reconstitution
system, in terms of the existence of input effects, we need to introduce the objective
function of the system
where, { } – system resources (including innovations); { }, ̅̅̅̅̅ –
internal states of the system (production); { }, ̅̅̅̅̅ – production and sale of
resort and recreational products; – profit function.</p>
      <p>If has more than one component, then { }, where ̅̅̅̅̅ –
number of components (multicriteria system). Let’s present the objective function in
the form of two functions: the original and the function (3). Then
(
)
(
(
))
(4)
The functional of the equation 4, which describes the operation of the whole system,
is an efficiency functional. Real reconstitution systems usually have several purposes
and consist of a set of subsystems. Let’s define the local target functions of
subsystems as , , . Then the functional 4 can be written as ( )
( ( ) ), where ( ) { ( ) } – quality indicators of subsystems.</p>
      <p>Uncertainty is a fundamentally integral part of the innovation process, as
innovation is inextricably linked with the struggle between the old and the new. Under
uncertainty, the choice of optimal values of system parameters can be carried out as a
task of finding satisfactory solutions: you need to find such ̃ that ,
( ̃ )
( )
(5)
where ( ) – a function that determines the minimum allowable value of the
objective function.</p>
      <p>It should be noted that the set covers both parametric and structural uncertainties,
i.e. in fact, it is the set of all factors influencing the solution of problem (5). It should
be noted the most important task in the problem (5) is finding a function ( ), which
determines the minimum or allowable quality of the system at any manifestations of
uncertainty . Function appearance of ( ) depends on both the properties of
the function ( ), and the type of uncertainty, which takes place depending on the
stage of the innovation process. However, uncertainty can be reduced to three main
types:</p>
      <p>〈 〉 – the set of uncertainties due to the internal and external environment and their
interaction. This type is chaotic in nature and is modeled by the methods of chaos
theory and catastrophe theory;</p>
      <p>〈 〉 – the set of uncertainty, which is due to purposeful counteraction (competition
of systems). It is modeled by methods of game theory;</p>
      <p>〈 〉 – the set of uncertainties associated with description inaccuracies that cannot
be estimated statistically. It can be described by methods of fuzzy set theory.</p>
      <p>Thus, the solution of the problem of extended reproduction in the conditions of
innovative resort-recreational economy can be obtained on the basis of the model of
multicriteria optimization taking into account the above relations.
5</p>
    </sec>
    <sec id="sec-5">
      <title>Conclusions</title>
      <p>The study of the behavior of the resort and recreational system in the face of
innovation and market variability allows us to draw the following conclusions.</p>
      <p>The study of the role of innovation in the formation of an innovative concept of
economic development of the resort and recreational industry allows us to highlight
the importance of the influence, that is able to push the system to one of the
development paths favorable to it and start the process of self-organization in times of
instability. Thus, the most important role of management in times of unstable and crisis
situations is to effectively use the chaos and push the system to develop in an
innovative way.</p>
      <p>From the standpoint of unbalanced dynamics, the behavior and development of
systems is interpreted as a sequence of transitions in the hierarchy of structures of
increasing complexity. The transition to a new level of life goes from chaos to order
through instability. In unbalanced situations, the emergence of order is possible only
in the presence of external flows that keep the system far from equilibrium.
Dissipative destruction of the structure and dissipation of energy or information develops in
the absence of these flows, resulting in systems degrading to a balanced state.
Interaction with the environment creates potential opportunities for the emergence of
unstable states and the emergence of a new, more orderly structure.</p>
      <p>The instability that arises in the process of development creates the possibility of
an abrupt transition of the system to a new state. The jump can be considered as a
reaction of the system to the perturbation in order to compensate for it. However, the
system does not return to the old state, but passes to a new innovative state, i.e.
"development through instability" provides stability at a higher level. In this case, the
stability itself is understood not as the stability of balanced structures, but as the d
ynamic stability of open systems at the expense of self-organization and
selfregulation, carried out mainly through transformations.</p>
      <p>
        For citations of references, we prefer the use of square brackets and consecutive
numbers. Citations using labels or the author/year convention are also acceptable. The
following bibliography provides a sample reference list with entries for journal
articles [
        <xref ref-type="bibr" rid="ref1">1</xref>
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        ], a book [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ], proceedings without editors [
        <xref ref-type="bibr" rid="ref4">4</xref>
        ], as well as a
URL [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ].
      </p>
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