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Found 6273 publications

Human factor in traffic models

Zsuzsanna Toth-Szabo Richard Horvath K. Kovacs

Publication Name: 2006 IEEE International Conference on Computational Cybernetics Iccc

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper deals with modeling of human behavior in traffic systems. The first part of the paper gives a short survey of the corresponding literature introducing the most important problems of the area. The second part of the paper contains our approach aiming the development of a driver model applicable in the widely used simulation systems to describe practical traffic situations and analyze the safety aspects.

Open Access: Yes

DOI: 10.1109/ICCCYB.2006.305738

Spatial and spectral properties of the dummy-head during measurements in the head-shadow area based on HRTF evaluation

György Wersényi

Publication Name: Institute of Noise Control Engineering of the Usa 35th International Congress and Exposition on Noise Control Engineering Inter Noise 2006

Publication Date: 2006-12-01

Volume: 7

Issue: Unknown

Page Range: 4477-4486

Description:

In accurate and repeatable measurements dummy -heads are often used to model the average human head and body. They are suited for standardized measurements and for investigating the human spatial hearing and localization performance. The monaural Head-Related Transfer Functions (HRTFs) of the dummy-head can be used for various investigations. This paper uses the HRTF-set of a Brüel & Kjaer head and torso simulator focusing on the so called monaural head-shadow area, where one of the ears is shadowed by the head itself. Based on long-term measurements using the bare torso as well as other accessories (glasses, clothing etc.) on it, the extent of the head-shadow area will be presented in frequency and space. The head-shadow area is investigated in connection with the overall SNR of the measurement and sensitivity domains of the ears. Conclusions are drawn for binaural recognition in human spatial hearing using low-frequency 'bright spots' and high-frequency information during lateral-contralateral evaluation.

Open Access: Yes

DOI: DOI not available

A scalable parallel genetic algorithm for solving linear systems

G. Y. Molnarka

Publication Name: Proceedings of the 5th International Conference on Engineering Computational Technology

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

For solving linear system of equations is known several algorithms. Iteration algorithms are recommended for the large linear systems with sparse matrix. But in the case of general non-symmetrical or n x m matrices the classic iterative algorithms are not applicable with a few exceptions. For example in some cases the Lanczos type algorithms are adequate. The algorithm presented here based on the minimization of square of residuum of approximate solution and it has some genetic character. Therefore this algorithm seems to be applicable for construction of parallel algorithm. Here we describe a parallel version of proposed algorithm and give its theoretical analysis. © 2006 Civil-Comp Press.

Open Access: Yes

DOI: DOI not available

Evaluation of dummy-head HRTFs in the horizontal plane based on the peak-valley structure in one-degree spatial resolution

György Wersényi

Publication Name: Institute of Noise Control Engineering of the Usa 35th International Congress and Exposition on Noise Control Engineering Inter Noise 2006

Publication Date: 2006-12-01

Volume: 7

Issue: Unknown

Page Range: 4487-4495

Description:

Dummy-heads are often used for standardized measurements where modeling of the human head and torso is relevant. Monaural Head-Related Transfer Functions of a Brüel & Kjaer dummy were measured in the horizontal plane in one-degree spatial resolution. Evaluation is made by plotting the peak-valley structure in frequency. Special frequency and spatial domains can be determined based on the variations of the HRTFs that are relevant to understand physical properties of the dummy -head in measurements and processes of human directional hearing. Symmetries and similarities of measured HRTFs help to scrutinize the perception of directional information in the monaural and binaural evaluation, the "noisy domain" in frequency and space where shadowing of the head occur as well as the filtering effect of the pinna.

Open Access: Yes

DOI: DOI not available

Analysis of temporal patterns of physiological parameters

B. Benyo

Publication Name: Neural Networks in Healthcare Potential and Challenges

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: 284-316

Description:

This chapter deals with the analysis of spontaneous changes occurring in two physiological parameters: the cerebral blood flow and respiration. Oscillation of the cerebral blood flow is a common feature in several physiological or pathophysiological states and may significantly influence the metabolic state of the brain. Our goal was to characterize the temporal blood flow pattern before, during, and after the development of CBF oscillations. Investigation of this phenomenon may not only clarify the underlying regulatory mechanisms and their alterations under certain conditions but also lead to the development of novel clinical diagnostic tools for early identification of developing cerebrovascular dysfunction in pathophysiological states such as brain trauma or stroke. A disturbance in normal breathing may occur in several nervous and physical diseases. In the present study, we introduce a reliable online method which is able to recognize abnormal sections of respiration, that is, the most common breathing disorder, the sleep apnea syndrome, based on a single time signal, the nasal air flow. There are several common features of the above problems and signals under investigation that imply similar solutions. The chapter introduces the systematic way of selecting proper feature extraction method and optimal classification procedure. The introduced approach can be generalized for the analysis of similar time series featuring physiological parameters. © 2006, Idea Group Inc.

Open Access: Yes

DOI: 10.4018/978-1-59140-848-2.ch013

Adopting RFID in supply chains

Tamás Hartványi Lajos Tóth P. Németh

Publication Name: 2006 IEEE International Conference on Mechatronics Icm

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: 263-266

Description:

Within the framework Interreg IIIC REGINS (Regional standardized Interfaces for a better integration of regional SMEs in the European Economy - http://www.regins.org) the Department of Logistics and Forwarding at the Széchenyi István University in Gyor, Hungary started a project with the title "Promotion of RFId (Radio Frequency Identification)". The project started in June 2005, and ended in May 2006. Our partners are situated in Upper Austria, Stuttgart Region, and Lombardy Region. Our project screens the state of the art and the ongoing development of RFId technology and processes. Special focus is on the needs of SMEs. This paper is the first in a series of publications regarding this topic, screening the state-of-the-art of RFId systems and the challanges and possibilities of the introduction to various supply chains. © 2006 IEEE.

Open Access: Yes

DOI: 10.1109/ICMECH.2006.252535

The spatial structure of flows, Reynolds stress and turbulence in the CASTOR tokamak

M. Berta R. Dejarnac B. Tál M. Hron J. Zajac S. Zoletnik A. Bencze J. Stöckel

Publication Name: 33rd Eps Conference on Plasma Physics 2006 Eps 2006

Publication Date: 2006-12-01

Volume: 2

Issue: Unknown

Page Range: 1452-1455

Description:

No description provided

Open Access: Yes

DOI: DOI not available

Control of traffic lights in high complexity intersections using hierarchical interpolative fuzzy methods

Csaba Gáspár József Hontvári Tibor Tari László T. Kóczy

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: 1045-1048

Description:

This paper presents an approach for controlling very complex traffic intersections with hierarchical fuzzy rules. Fuzzy variables and rules are defined on a basic and also on a higher level. Simulation of road intersections with several lanes and road railroad intersection are presented. The results of a comparison of conventional cyclically controlled and fuzzy controlled systems will be shown © 2006 IEEE.

Open Access: Yes

DOI: 10.1109/FUZZY.2006.1681839

Efficient fuzzy cognitive modeling for unstructured information

Tamás D. Gedeon László T. Kóczy Kok Wai Wong

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2006-12-01

Volume: Unknown

Issue: Unknown

Page Range: 358-363

Description:

This paper presents an efficient fuzzy cognitive modeling which can handle granulation, organisation and causation. This cognitive modeling technique consists of multiple levels where the lowest level includes details required to make a decision or to transfer to the next stage. This Fuzzy Cognitive Modeling will enhance the usability of fuzzy theory in modeling complex systems as well as facilitating complex decision making process based on ill structured or missing information or data. © 2006 IEEE.

Open Access: Yes

DOI: 10.1109/FUZZY.2006.1681737