Chapter

A Dynamic Model for the Global Corporation: The Triad Networks-Coevolution-Competitiveness

May 2015

May 2015

DOI:10.1057/9781137429599_5

Authors:

Lucian Blaga University of Sibiu

Lucian Blaga University of Sibiu

Challenges for Business Competitiveness from Managerial and Knowledge Economy Perspectives

Article

Full-text available

Dec 2015

Mihaela Herciu

The complex and networked economy arises a series of challenges for business competitiveness in order to develop or redefine business models and theories. This paper tries to capture a relevant part of our previous studies by emphasizing the challenges that business competitiveness has to cope and integrate, such as: behavioral model of management, firm competitiveness (leveraging tangible and intangible assets), new models of business (Panarchy Corporation and ambidexterity) and management functions.

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Chapter

Global invasion barriers

January 1989

This chapter deals with a uniform version of evolutionary stability which we propose to call uninvadability (note that, in contrast, Maynard Smith [1982, p.205] and Thomas [1985] use the terms “uninvadable” and “evolutionary stable” synonymously). According to our definition in Section 4.1, a state is uninvadable if it is protected by a positive global invasion barrier. As it turns out, this ... [Show full abstract] concept guarantees stability in dynamical models for the time evolution of discrete polymorphisms; we defer the discussion of this aspect to Chapter 8.

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Distressed Assets in a Normative Dynamic Model of Kazakhstan Economy

February 2019 · DEStech Transactions on Computer Science and Engineering

The paper presents a normative mathematical model of Kazakh economy with distressed assets in banking sector. The model contains a lot of unspecified parameters which are not defined directly by the data of economic statistics. A method of identification of the model parameters is a type of global optimization problem. Parallel calculations are used for estimation of model parameters by ... [Show full abstract] statistical data of the Kazakh economy 2000-2016.

Conference Paper

Sufficient conditon for global identifiability of linear dynamical models

February 1999

T. Avdeenko

First Page of the Article

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On a Family of Finite Moving-Average Trend Filters for the Ends of Series.

March 2002 · Journal of Forecasting

A family of finite end filters is constructed using a minimum revisions criterion and based on a local dynamic model operating within the span of a given finite central filter. These end filters are equivalent to evaluating the central filter with unavailable future observations replaced by constrained optimal linear predictions. Two prediction methods are considered: best linear unbiased ... [Show full abstract] prediction and best linear biased prediction where the bias is time invariant. The properties of these end filters are determined. In particular, they are compared to X-11 end filters and to the case where the central filter is evaluated with unavailable future observations predicted by global ARIMA models as in X-11-ARIMA or X-12-ARIMA. Copyright © 2002 by John Wiley & Sons, Ltd.

Article

Global Versus Local Mass Functions

January 1988 · Symposium - International Astronomical Union

Ivan R. King

Multimass dynamical models are used to study the difference between a mass function determined in an outer field and the global mass function of the cluster. The differences are small.

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Dynamics of a ratio-dependent predator-prey system with a strong Allee effect

November 2013 · Discrete and Continuous Dynamical Systems - B

A ratio-dependent predator-prey model with a strong Allee effect in prey is studied. We show that the model has a Bogdanov-Takens bifur- cation that is associated with a catastrophic crash of the predator popula- tion. Our analysis indicates that an unstable limit cycle bifurcates from a Hopf bifurcation, and it disappears due to a homoclinic bifurcation which can lead to different patterns of ... [Show full abstract] global population dynamics in the model. We study the heteroclinic orbits and determine all possible phase portraits when the Bogdanov-Takens bifurcation occurs. We also provide the conditions for nonexistence of limit cycle under which the global dynamics of the model can be determined.

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An improved computer multi-virus propagation model with user awareness

December 2011 · Journal of Information and Computational Science

In this paper, an improved computer virus propagation model with user awareness is proposed and how its parameters are related to network characteristics is explained. Unlike other existing computer virus propagation models, we consider an important factor-user awareness. Furthermore, the stability and dynamics of the model are studied, and the simulation results show that the virus-free ... [Show full abstract] equilibrium and virus-endemic equilibrium are globally stable, whenever the population of network increases or decreases. Finally, the problem how to control the virus propagation is discussed, and we obtain that user awareness is closely related to the virus propagation.

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Conceptual Flight Dynamic Model for Bombardier Global 5000 Aircraft

June 2016

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Fractional Order Delayed Predator-Prey Systems with Holling Type-II Functional Response

May 2015 · Nonlinear Dynamics

In this paper, a fractional dynamical system of predator–prey with Holling type-II functional response and time delay is studied. Local and global stability of existence steady states and Hopf bifurcation with respect to the delay is investigated, with fractionalorder 0 < α ≤ 1. It is found that Hopf bifurcation occurs when the delay passes through a sequence of critical values. Unconditionally, ... [Show full abstract] stable implicit scheme for the numerical simulations of the fractional-order delay differential model is introduced. The numerical simulations show the effectiveness of the numerical method and confirm the theoretical results. The presence of fractional order in the delayed differential model improves the stability of the solutions and enrich the dynamics of the model.

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A dynamic marketing model with best reply and inertia

June 2015 · Chaos Solitons & Fractals

In this paper we consider a nonlinear discrete-time dynamic model proposed by Farris et al. (2005) as a market share attraction model with two firms that decide marketing efforts over time according to best reply strategies with naïve expectations. The model also considers an adaptive adjustment toward best reply, a form of inertia or anchoring attitude, and we investigate the effects of ... [Show full abstract] heterogeneities among firms. A rich scenario of local and global bifurcations is obtained even with just two competing firms, and a comparison is proposed with apparently similar duopoly models based on repeated best reply dynamics with naïve expectations and adaptive adjustment.

Chapter

Dynamic Modelling of Molten Slag-Matte Interactions in an Industrial Flash Smelting Furnace Settler:...

August 2018

Depleting copper resources and advancing technologies have challenged industries to develop more viable, adaptable and cost efficient processes using also secondary raw materials in copper production. This study is targeting to that goal by dynamic modelling of flow and heat transfer coupled with chemical kinetics in an industrial scale flash smelting furnace settler using commercial CFD software ... [Show full abstract] ANSYS Fluent. First, different physical phenomena occurring inside the settler, for example, settling and separation of the matte/slag phases, and heat transfer between slag /matte phases and settler walls are studied. Secondly, reaction kinetics between matte and slag , and between slag /matte and settler walls, and impurity element distribution will be studied. This would also include phase changes phenomena due to these reactions and the flow of the reaction gases inside the settler. Settling of polydispersed droplets, their coagulation, breakage, and WEEE particle behavior are further targets of the modelling work.KeywordsFlash smelting settlerMatte droplets settlingCopper losses

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Constrained Model Predictive Control of a Skid-Steering Mobile Robot

March 2015

In this paper, a kinematic model of a four-wheel skid-steering mobile robot is presented and a receding horizon stabilizing control law for the system is developed, based on the optimization of a quadratic cost function on the system states and control inputs. Global asymptotic stability of the nominal system with actuator saturation constraints is analytically proven and a simple dynamical model ... [Show full abstract] is constructed for validation purposes. The robustness and performance of the controller were tested under simulation on both models and the results are presented and discussed.