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Start Over Descriptor "Direct interactions" Topic simulation
7 results on '"Direct interactions"'

1. Transaction costs influence on the stability of financial market: agent-based simulation

Author

Roman Šperka and Marek Spišák

Subjects
agent-based, financial market, NetLogo, direct interactions, technical and fundamental analysis, simulation, Business, HF5001-6182
Abstract

We implement an agent-based simulation of financial market model. Agent-based simulations are used nowadays as an alternative to the traditional models, based on predetermined equilibrium state theory. Agent technology brings some kind of local intelligence and rational expectations to the decision support system of financial market participants. Agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators and they may decide to change their trading behaviour. If a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in recent past, the probability that the technical trader switches to the fundamental trading rules is relatively high. In particular the influence of transaction costs is studied in this paper. Transaction costs can be increased by the off-market regulation (for example in the form of taxes) on financial market stability, by overall volume of trade and other market characteristics. The paper shows a positive impact of suitable transaction costs on the financial market stability in the long run.

Published
2013
Full Text
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2. MULTI-AGENT SIMULATION OF FINANCIAL MARKET WITH TRANSACTION COSTS INFLUENCE.

Author

Spišák, Marek and Šperka, Roman

Subjects
*FINANCIAL markets, *INVESTMENTS, *PROFITABILITY, *OPERATING costs, *STABILITY (Mechanics)
Abstract

We implement a multi-agent financial market model simulation in which agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators due to which they may decide to change their trading behaviour. For instance, if a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in the recent past, the probability that the technical trader switches to fundamental trading rules is relatively high. In particular the influence of transaction costs is studied, which can be increased by the off-market regulation (for example in the form of taxes) on market stability, the overall volume of trade and other market characteristics. [ABSTRACT FROM AUTHOR]

Published
2012

3. MULTI-AGENT SIMULATION OF FINANCIAL MARKET WITH TRANSACTION COSTS INFLUENCE.

Author

Spišák, Marek and Šperka, Roman

Subjects
*FINANCIAL markets, *INVESTMENTS, *TAXATION, *MARKETS, *MATHEMATICS
Abstract

We implement a multi-agent financial market model simulation in which agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators due to which they may decide to change their trading behaviour. For instance, if a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in the recent past, the probability that the technical trader switches to fundamental trading rules is relatively high. In particular the influence of transaction costs is studied, which can be increased by the off-market regulation (for example in the form of taxes) on market stability, the overall volume of trade and other market characteristics. [ABSTRACT FROM AUTHOR]

Published
2011

4. FINANCIAL MARKET SIMULATION BASED ON INTELLIGENT AGENTS -- CASE STUDY.

Author

SPIŠÁK, Marek and ŠPERKA, Roman

Subjects
INTELLIGENT agents, FINANCIAL markets, TRANSACTION costs, TAX returns, INVESTMENT analysis, SPECULATORS
Abstract

We implement an agent-based financial market model simulation in which agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators due to which they may decide to change their trading behaviour. For instance, if a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in the recent past, the probability that the technical trader switches to fundamental trading rules is relatively high. In particular the influence of transaction costs is studied, which can be increased by the off-market regulation (for example in the form of taxes) on market stability, the overall volume of trade and other market characteristics. [ABSTRACT FROM AUTHOR]

Published
2011

5. Transaction costs influence on the stability of financial market: agent-based simulation

Author

Marek Spišák and Roman Šperka

Subjects
Economics and Econometrics, Alternative trading system, HF5001-6182, Financial economics, Financial market, NetLogo, Market microstructure, Market timing, computer.software_genre, simulation, Microeconomics, direct interactions, Order (exchange), Technical analysis, Tobin tax, Economics, financial market, Business, Management and Accounting (miscellaneous), Business, agent-based, Algorithmic trading, Speculation, computer, technical and fundamental analysis
Abstract

We implement an agent-based simulation of financial market model. Agent-based simulations are used nowadays as an alternative to the traditional models, based on predetermined equilibrium state theory. Agent technology brings some kind of local intelligence and rational expectations to the decision support system of financial market participants. Agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators and they may decide to change their trading behaviour. If a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in recent past, the probability that the technical trader switches to the fundamental trading rules is relatively high. In particular the influence of transaction costs is studied in this paper. Transaction costs can be increased by the off-market regulation (for example in the form of taxes) on financial market stability, by overall volume of trade and other market characteristics. The paper shows a positive impact of suitable transaction costs on the financial market stability in the long run.

Published
2013

6. Anticoagulant activity of a unique sulfated pyranosic (1→3)-β-L- arabinan through direct interaction with thrombin

Author

Fernández, P.V., Quintana, I., Cerezo, A.S., Caramelo, J.J., Pol-Fachin, L., Verli, H., Estevez, J.M., and Ciancia, M.

Subjects
CD spectra, Magnetic Resonance Spectroscopy, Antithrombin, Molecular Conformation, Amino acid residues, Oligosaccharides, Arabinans, sulfated pyranosic beta arabinan, heparin cofactor II, Cell Wall, Spectroscopy, Fourier Transform Infrared, Catalytic sites, Carbohydrate Conformation, Thrombin inhibition, Fluorescence spectroscopy, anticoagulation, Ligand binding, Anticoagulant activities, Glycosaminoglycans, conformational transition, Circular Dichroism, Heparin cofactor, article, Thrombin, blood clotting test, Octasaccharide, Computer simulation, simulation, Enzymes, unclassified drug, priority journal, protein protein interaction, Sulfate groups, Amino acids, Direct interactions, amino acid, Caulerpales, Protein Binding, Pyranose, Electrophoresis, Biophysics, Methylation, Gas Chromatography-Mass Spectrometry, protein modification, Green seaweed, Polysaccharides, drug mechanism, oligosaccharide, Animals, Humans, algal extract, arabinose, Blood Coagulation, Codium vermilara, Sulfated polysaccharides, Pyrans, Coagulation, nonhuman, catalysis, Anticoagulants, Conformational change, Model compound, Seaweed, molecular dynamics, drug structure, Kinetics, Models, Chemical, carbohydrate, polysaccharide, Cattle, protein
Abstract

A highly sulfated 3-linked β-arabinan (Ab1) with arabinose in the pyranose form was obtained from green seaweed Codium vermilara (Bryopsidales). It comprised major amounts of units sulfated on C-2 and C-4 and constitutes the first polysaccharide of this type isolated in the pure form and fully characterized. Ab1 showed anticoagulant activity by global coagulation tests. Less sulfated arabinans obtained from the same seaweed have less or no activity. Ab1 exerts its activity through direct and indirect (antithrombin- and heparin cofactor II-mediated) inhibition of thrombin. Direct thrombin inhibition was studied in detail. By native PAGE, it was possible to detect formation of a complex between Ab1 and human thrombin (HT). Ab1 binding to HT was measured by fluorescence spectroscopy. CD spectra of the Ab1 complex suggested that ligand binding induced a small conformational change on HT. Ab1-thrombin interactions were studied by molecular dynamic simulations using the persulfated octasaccharide as model compound. Most carbohydrate-protein contacts would occur by interaction of sulfate groups with basic amino acid residues on the surface of the enzyme, more than 60% of them being performed by the exosite 2-composing residues. In these interactions, the sulfate groups on C-2 were shown to interact more intensely with the thrombin structure. In contrast, the disulfated oligosaccharide does not promote major conformational modifications at the catalytic site when complexed to exosite 1. These results show that this novel pyranosic sulfated arabinan Ab1 exerts its anticoagulant activity by a mechanism different from those found previously for other sulfated polysaccharides and glycosaminoglycans. © 2013 by The American Society for Biochemistry and Molecular Biology, Inc. Fil:Fernández, P.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Quintana, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cerezo, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Estevez, J.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ciancia, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.

Published
2013

7. Transaction costs influence on the stability of financial market: agent-based simulation.

Author

Šperka, Roman and Spišák, Marek

Subjects
TRANSACTION costs, STABILITY theory, FINANCIAL markets, COMPUTER simulation, ECONOMIC equilibrium, DECISION support systems
Abstract

We implement an agent-based simulation of financial market model. Agent-based simulations are used nowadays as an alternative to the traditional models, based on predetermined equilibrium state theory. Agent technology brings some kind of local intelligence and rational expectations to the decision support system of financial market participants. Agents follow technical and fundamental trading rules to determine their speculative investment positions. We consider direct interactions between speculators and they may decide to change their trading behaviour. If a technical trader meets a fundamental trader and they realize that fundamental trading has been more profitable than technical trading in recent past, the probability that the technical trader switches to the fundamental trading rules is relatively high. In particular the influence of transaction costs is studied in this paper. Transaction costs can be increased by the off-market regulation (for example in the form of taxes) on financial market stability, by overall volume of trade and other market characteristics. The paper shows a positive impact of suitable transaction costs on the financial market stability in the long run. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

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