Application Of Systems Theory Research Articles

Water need formation on the drained lands in the variable climatic, agricultural and ameliorative conditions

Relevance of research. At both global and regional levels, climate change has become an indisputable fact, the presence of which has posed to humanity the challenge of solving a number of extremely important and complex tasks related to the development and implementation of a strategy for their practical continued existence. Data base on evaporation and water needs for agricultural crops in the different periods of their growing, depending on the climatic conditions, are the basis for the development of design and formation of operational regimes of water regulation carried out by justifying the necessary methods of water regulation, types, structures and modes of operation of hydro-reclamation systems and calculation of their parameters.
 Aim of the study is to estimate the changes in water needs during crop cultivation on the drained lands of the Western Polissya in Ukraine in the variable climatic, agricultural and ameliorative conditions for the substantiation of appropriate adaptive decisions to it. To achieve this goal, the authors evaluated the weather and climate conditions in the Western Polissya in Ukraine and calculated the evaporation in the studied conditions, planned and carried out a large-scale computer experiment, based on a complex of predictive-simulation models concerning the basic regimes and technological variables of the hydro-reclamation system parameters, climate conditions, water regime, water regulation technologies and the productivity of drained lands for the schematized natural, agricultural and ameliorative conditions. 
 Research methods. The research methods were based on the application of system theory along with the systematic approach, system analysis and modeling oriented on widespread use of computers and related software in developing modern approaches to the substantiation of technical and technological solutions for water regulation on the drained lands in the conditions of climate change. The object of the study is the drainage system “Birky” in Rivne region, typical for the region in relation to the natural land reclamation conditions. 
 Results of the study and the main conclusions. It was established the needs for additional irrigation of cultivated crops on the drained lands of the Western Polissya in Ukraine in the current weather and climatic conditions. Based on the long-term forecast the vegetative values of the total evaporation and the formation of water needs for the drained lands in the variable climatic, agricultural land reclamation conditions were determined. The technological efficiency of different technologies of the irrigation on the drained lands was evaluated. This approach to the estimation of changes in water needs during crop cultivation in the variable climatic, agricultural and ameliorative conditions allows determining the best technology of water regulation for growing a particular crop under the studied conditions in terms of the most rational use of water resources and the efficiency of system functioning. 
 Prospects. The obtained results can be effectively used for justification of regime and technological decisions in the projects of construction and reconstruction of hydro-reclamation systems of the Western Polissya in Ukraine in the variable climate conditions and developing hydro-technical adaptive measures to the predicted climate change in the region.

The most livable city selection in Turkey with the grey relational analysis

PurposeThis study has two main objectives: (1) to expand the application areas of grey system theory and (2) to select the most livable city in Turkey.Design/methodology/approachChoosing the most livable city is a complex problem that requires many criteria to be considered. It is important to select decision points according to which the criteria selection will be made and to what extent the criteria will affect the evaluation. For this purpose, a questionnaire was prepared to determine the criteria to be used in the assessment. The survey results were evaluated by the factor analysis (FA) and it was found that the criteria included in the survey were grouped under seven factors. Then, criteria weights were assigned to the determined criteria using the analytic hierarchy process (AHP). At the last stage, Turkey's six most popular cities are graded using the grey relational analysis (GRA) to reduce the uncertainty existing in the process of evaluation.FindingsThe obtained results indicated that the most livable city in Turkey is Istanbul. Istanbul is followed by Izmir, Antalya, Eskisehir, Bursa and Ankara, respectively. Considering that Istanbul is a center of attraction in many respects, this result is not a surprise for many people. It is also observed that the results obtained overlap with similar studies in the literature.Originality/valueGrey system theory and grey numbers have not been previously used to select the most livable city. With this aspect, this study has expanded the application of grey system theory and made an important contribution to the literature.

Dynamic Features of Students’ Scaffolding Interaction in English Writing Class

Peer scaffolding as an important index of active student-student interaction has already aroused researchers’ interests. In addition, the application of Dynamic System Theory in language study provided researchers with a new perspective. The author conducted an eight-week research in a foreign language university in China. 56 non-English major sophomores from two classes participated in this study. The results indicated that students’ interaction in small group discussion was a dynamic system and it had all the dynamic system features such as unpredictable, sensitive to initial conditions, open, complexity, etc. With the results of this investigation, the current study concludes with some suggestions for future group discussion design.

Short-period effects of the planetary perturbations on the Sun–Earth Lagrangian point L3

Context. The Lagrangian point L3 of the Sun–Earth system, and its Lyapunov orbits, have been proposed to perform station-keeping, although L3 is only rigorously defined for the extremely simplified model represented by the reduced Sun–Earth–spacecraft system. As in L3 the planetary perturbations (mainly from Jupiter and Venus) are stronger than Earth’s attraction, it is necessary to understand whether or not the dynamics close to L3 persist under such a strong perturbation, allowing for a definition of dynamical substitutes for models that are more realistic than the circular restricted three-body problem. Aims. In this paper we address the problem of the existence of motions that remain close to L3 for a time-span which is relevant for space missions in a model of the Solar System compatible with the precision of JPL digital ephemerides. Methods. First, we computed analytically the main short-period effects of planetary perturbations in a simplified model of the Solar System with the orbits of all the planets co-planar and circular. We then applied the Fast Lyapunov Indicator method in order to find dynamical substitutes that exist for time-spans of hundreds of years in the model of the Solar System that is used to produce the modern ephemerides. Results. We find that the original system is conjugate by a canonical transformation to an averaged system that has an equilibrium close to L3: even if Venus and Jupiter each move the position of this equilibrium by about 218 and 176 km, respectively, in opposite directions, in the model where both the planets are included, their effects almost perfectly compensate for one another, leaving a displacement of about 40 km only. This equilibrium is then mapped in the original system to a quasi-periodic dynamical substitute; the contributions of each planet to the amplitude of this quasi-periodic libration around L3 do not compensate for one another, and sum to about 10 000 km. The Fast Lyapunov Indicator method allowed us to find orbits of any amplitude bigger than this one (up to 0.03 AU) for time-spans of hundreds of years in the model of the Solar System that is used to produce the modern ephemerides. Conclusions. Using a combination of the Hamiltonian averaging method with a new implementation of the Fast Lyapunov Indicator method we find orbits useful for astrodynamics originating at the Sun–Earth Lagrangian point L3 for a realistic model of the Solar System. In particular, this usage of the chaos indicator provides an innovative application of dynamical systems theory to astrodynamics, where the short-period perturbations represent a relevant part of the model.

Selected Applications of Linear Semi-Infinite Systems Theory

In this paper we, firstly, review the main known results on systems of an arbitrary (possibly infinite) number of weak linear inequalities posed in the Euclidean space $\mathbb {R}^{n}$ (i.e., with n unknowns), and, secondly, show the potential power of this theoretical tool by developing in detail two significant applications, one to computational geometry: the Voronoi cells, and the other to mathematical analysis: approximate subdifferentials, recovering known results in both fields and proving new ones. In particular, this paper completes the existing theory of farthest Voronoi cells of infinite sets of sites by appealing to well-known results on linear semi-infinite systems.

Application of grey system theory to phosphorite sinter process: From modeling to control

AbstractThe sintering process of phosphorite ore occurs with a large amount of return caused by untimely process control. The control task of phosphorite ore sintering is to regulate the parameters of the process to obtain a high quality sinter. The parameter clearly responsible for sinter quality is the temperature in the wind box. Therefore, in order to solve the control task, it is necessary to predict the highest temperature of the charge (also known as the burn through point (BTP)). In this paper, the theory of grey systems is used as a predictive model, which makes it possible to obtain an adequate model that uses a small number of initial samples of real temperature data. Based on the grey model GMC(1,n) a new optimal model is presented, which is constructed by using optimization algorithm. Optimal model predicts the BTP, and to establish an optimal regulation, a control synthesis is carried out through an optimization of the prediction according to the “particle swarm” algorithm.

Information system and distributed storage planning of smart distribution network based on distributed structure

The high permeability of distributed energy and the continuous expansion of distribution network demand higher requirements for distribution network planning and construction. The distribution network with distributed structure will be the development trend of smart distribution network in the future, and the control and planning of distribution network for distributed architecture will become a new direction for the research of smart distribution network. Intelligent distribution network information system is an important foundation to support the operation and planning of intelligent distribution network. From the point of view of communication network construction, power grid construction, distributed energy storage planning and grid structure, distributed distribution network planning indicators are proposed. The application of multi-agent system theory to build intelligent distribution network collaborative control system, on one hand, can reduce the cost of system construction and maintenance, and improve the flexibility and stability of the system. On the other hand, due to the high efficiency and real-time of data acquisition, the allocation of distributed storage can be achieved in the planning stage of distribution network. After distributed storage connecting to the distribution network, the system can coordinate other equipment in the distribution network for active management and control, and optimize the operation status of the distribution network.

Preventing slips, overruns, and cancellations: Application of system accident investigations and theory to the understanding and prevention of engineering project failures.

Organizations that develop or operate complex engineering systems are plagued by systems engineering failures like schedule overruns, budget exceedances, and project cancellations. Unfortunately, there is not much actionable guidance on why these failures happen or how to prevent them. Our approach contains two novel aspects. First, we argue that system accidents and other failures in systems engineering are manifestations of similar underlying problems. Therefore, we can leverage the literature on accident causation and the many publicly available accident investigation reports to better understand how and why failures in systems engineering occur, and to identify ways of preventing them. Second, to address the lack of concrete guidance on identifying and preventing incipient failures, we provide specific examples of each type of failure cause and of the recommendations for preventing these causes. We analyzed a set of 30 accidents and 33 project failures, spanning a range of industries, and found 23 different failure causes, most of which appear in both accidents and other project failures, suggesting that accidents and project failures do happen in similar was. We also identified 16 different recommended remedial actions. We link these causes and recommendations in a cause-recommendation network, and associate over 900 specific examples of how these causes manifested in failures, and over 600 specific examples of the associated recommended remedial actions, with each cause or recommendation.

Application of grey system theory in prediction of accident prone sea area

The GM (1,1) model is established by using the grey system theory,Realizes the goal that the accidents in the multi accident sea area can be accurately predicted by the prediction model. The key point is to establish the model correctly and apply it to the prediction of accident prone sea area. Looking up the sea area with the characteristic of frequent accidents, building the model, and testing the result of substituting the data into the model prediction, the result shows that the viewpoint of this paper is correct and can predict the maritime traffic accidents with high accuracy.

Couple Adjustment and Differentiation of Self in the United States, Italy, and Spain: A Cross‐Cultural Study

This study comprises a first attempt to explore a cross-cultural application of Bowen family systems theory and examines the relationship between differentiation of self and couple adjustment using measurement invariance. A sample of 2,141 individuals (n=915 from the United States; n=635 from Italy; n=591 from Spain) completed measures of differentiation of self (DSI-R; Skowron & Schmitt, J Marital Fam Ther, 29, 2003, 209) and couple adjustment (DAS; Spanier, J Marriage Fam, 38, 1976, 15). Results showed evidence of partial measurement equivalence for the DSI-R across the three samples. Additionally, results from latent regression showed that less emotional cutoff predicted greater couple adjustment in the United States, Spain, and Italy, whereas greater emotional reactivity predicted poorer couple adjustment only in the more collectivistic cultures, Spain and Italy. Our findings are consistent with prior empirical studies, which suggest that emotional cutoff is a strong predictor of relationship adjustment. The use of measurement invariance provides a foundation for future studies to continue employing rigorous statistical methods when examining constructs across different cultures. The findings highlight culture-specific similarities and differences in differentiation that may benefit practitioners by informing psychotherapy with individuals, couples, or families from diverse populations.

Embracing complexity: a sociotechnical systems approach for the design and evaluation of higher education learning environments

ABSTRACTHigher education institutions (HEI) have undergone fundamental changes driven by ICT developments, globalisation, and the advent of socio-constructivist pedagogic approaches. As a result, within the UK, capital investment in new and retrofitted facilities has reached a record expenditure. Recent research on user-related evaluations of facilities, particularly in HEI learning spaces, highlights the prevalence of evaluations dominated by reductionist approaches focused on measuring outcomes, on users, such as satisfaction, learning outcomes or engagement. These approaches have a major pitfall, neglecting the complexity of the dynamic relationships between people, spaces, technology, institutional structure and pedagogic practices. In response, this paper aims to propose a shift on current approaches by exploring the application of sociotechnical systems theory to learning space design and evaluation. Amid these, it is argued that Cognitive Work Analysis (CWA) offers promising alternatives to inform design and management of higher education learning spaces. Finally, within the paper, three CWA interventions are proposed and discussed, focusing on how these address previously identified shortcomings of predominant approaches used in HEI learning space design and evaluation.

The Application of System Theory’s Thinking Principle in the Design of Shared Parking Service

This paper studied how can shared parking services create a better service and user experience from the system theory's thinking perspective, analyzed the model differences between traditional parking services and shared parking services, analyzed the existing problems of shared parking services, and proposed the application of system theory's thinking principle in the design of shared parking service to make the designed shared parking service better meet the needs of users and improve the parking experience of users.

Zastosowanie Teorii Szarych Systemów w analizie relacji między komunikacją a postawą rynkową przedsiębiorstw rodzinnych

Zastosowanie Teorii Szarych Systemów w analizie relacji między komunikacją a postawą rynkową przedsiębiorstw rodzinnych

Application of grey system theory and ARIMA model to forecast factors of tourism: A case of Binh Thuan Province in Vietnam

Application of grey system theory and ARIMA model to forecast factors of tourism: A case of Binh Thuan Province in Vietnam

Application of Stability Theory in Study of Local Dynamics of Nonlinear Systems

Investigating local dynamics of equilibrium points of nonlinear systems plays an important role in studying the behavior of dynamical systems. There are many different definitions for stable and unstable solutions in the literature. The main goal to develop stability definitions is exploring the responses or output of a system to perturbation as time approaches infinity. Due to the wide range of application of local dynamical system theory in physics, biology, economics and social science, it still attracts many researchers to play with its definitions to find out the answers for their questions. In this paper, we start with a brief review over continuous time dynamical systems modeling and then we bring useful examples to the playground. We study the local dynamics of some interesting systems and we show the local stable behavior of the system around its critical points. Moreover, we look at local dynamical behavior of famous dynamical systems, Henon-Heiles system, Duffing oscillator and Van der Pol equation and analyze them. Finally, we discuss about the chaotic behavior of Hamiltonian systems using two different and new examples.

An entrepreneurial marketing process perspective of the role of intermediaries in producing innovation outcomes

The activities of innovation system actors, particularly the importance of networks, entrepreneurs, and the role of intermediaries have not yet been integrated into a framework that explains innovation system performance at the project level. This study contributes by exploring the role of the innovation system’s actors with respect to its performance. Innovation system performance is studied using multiple cases of projects using statistical inference, network analysis, and fuzzy-set qualitative comparative analysis. The number of actors effectively involved in projects is positively associated with innovation system performance. The network of relationships in the case study innovation system was relatively open, such that the contribution of some actors only became available to the system through the conduit of other actors. Both researchers and intermediaries are highly involved and effective, and the intermediaries’ effectiveness contributes to innovation system performance. However, the perceived involvement or effectiveness of these and other actors did not, alone, ensure that the conditions required for innovation system performance were met. The research method and results apply to any innovation project, particularly those in highly regulated, technological fields. The present study’s findings demonstrate the application of innovation system theory at the project level. The study has important implications for integrating entrepreneurial marketing into innovation system policy and practice.

Paradigm lost? A historical review of the application of systems theory to public relations since 1975

This study traces the formative application of systems theory to public relations and its consideration as a promising paradigm framework for the field, through a rich array of critical perspectives, and more recent analyses that examine public relations as a social phenomenon. The principles of grounded theory are applied to the selection and assessment of a representative sample of academic literature published between 1975 and 2016. A categorization framework emerges from the thematic analysis of the data that re-evaluates the historical application of systems theory. Two main insights emerge from the study. First, even in cases where a specific systems theory is not directly invoked, systems concepts are evident throughout the data of this period. Second, although systems theory has been applied extensively in the analyses of the organization, and more lately in the analyses of the impacts of public relations on the social world as a whole, analysis of the individual as a system actor as a central unit of analysis was not apparent in the data. Accordingly, a reflection on the individual as a system actor is undertaken, along with an updated visual model of the public relations system. Concluding remarks summarize the case for the ongoing relevance of systems theory to public relations research, practice, and education.

Real root finding for low rank linear matrices

We consider $m \times s$ matrices (with $m\geq s$) in a real affine subspace of dimension $n$. The problem of finding elements of low rank in such spaces finds many applications in information and systems theory, where low rank is synonymous of structure and parsimony. We design computer algebra algorithms, based on advanced methods for polynomial system solving, to solve this problem efficiently and exactly: the input are the rational coefficients of the matrices spanning the affine subspace as well as the expected maximum rank, and the output is a rational parametrization encoding a finite set of points that intersects each connected component of the low rank real algebraic set. The complexity of our algorithm is studied thoroughly. It is polynomial in $\binom{n+m(s-r)}{n}$. It improves on the state-of-the-art in computer algebra and effective real algebraic geometry. Moreover, computer experiments show the practical efficiency of our approach.

The concept of the qualitology and grey system theory application in marketing information quality cognition and assessment

The article presents concept of the basics of qualitology and grey incidence clustering model application in the recognition and assessment of marketing information quality. In the first part of the paper, the concept of qualitative (qualitological) modelling of marketing information quality is explained. The issues of quality, marketing information quality and the evaluated marketing information quality are presented. Several steps are specified to recognize and asses the marketing information quality. In the presented concept, an innovative solution is an integration of the fundamental qualitative principles, operations and methods with the grey incidence clustering model. The developed concept facilitates the recognition of the marketing information quality in a systematic (holistic) manner, considering the state of features belonging to marketing information and their structure. The results presented constitute the basis for further research on quality management of the company’s marketing information. The developed methodological solution was applied in a chosen industrial company. In the last part of the paper, directions for further research in the field of marketing information quality management in industrial companies are specified.

Изучение музея как категории мышления: опыт применения аппарата теории динамических информационных систем

Изучение музея как категории мышления: опыт применения аппарата теории динамических информационных систем