Search in Publications

Found 5152 publications

Validity of a 2-km Walk Test in predicting the maximal oxygen uptake in moderately active Hungarian men

Géza Zakariás R. Laukkanen M. Petrekanits

Publication Name: European Journal of Sport Science

Publication Date: 2003-12-01

Volume: 3

Issue: 1

Page Range: 1-8

Description:

The present study examined whether prediction models based on the 2-km UKK Walk Test (UWT) are valid for predicting the maximal oxygen uptake or maximal aerobic power (VO2max) in moderately active Hungarian men. Eightyseven 24-62 year old, non-athletic, sedentary or moderately physically active men were studied. Maximal aerobic power was measured in a maximal uphill walk exercise test on a treadmill. The walking tests were performed on a 400-m outdoors athletic track. The subjects walked 2 km (5 laps) as briskly as they could. VO2max was predicted with the formula as established in the original development study of the UWT. The total error of prediction and the correlation coefficient between the laboratory measured and UWT predicted VO2max (ml · kg-1 · min-1) were 4.6 and 0.85. The Bland-Altman analysis showed a good agreement between the methods, with the mean error of prediction 0.05 ml · kg-1 · min-1. The results verify that the UWT can be used as a reasonably valid test for predicting maximal aerobic power in Hungarian men. © 2002 by Human Kinetics Publishers and the European College of Sport Science.

Open Access: Yes

DOI: 10.1080/17461390300073104

A simple technique to estimate the processing window for laser clad coatings

K. Zoltan L. Costa B. Verö I. Felde R. Colaço T. Reti R. Vilar

Publication Name: International Surface Engineering Congress Proceedings of the 1st Congress

Publication Date: 2003-12-01

Volume: Unknown

Issue: Unknown

Page Range: 237-242

Description:

A semi-empirical method for selecting the processing parameters of laser cladding is proposed. This phenomenological approach uses simple mathematical formulae, derived from a statistical analysis of measured data, to relate the laser cladding parameters with the geometric features of the clad track. Given the required clad height and available laser beam power, the proposed method allows one to calculate values of the scanning speed and powder feed rate which are used to obtain low dilution, pore free coatings, fusion bonded to the substrate. To illustrate the application of this method, variable powder feed rate laser cladding experiments were carried out with Stellite 6 powder on mild steel substrates. In this technique the laser beam power and radius and the processing speed are kept constant, while the powder feed rate is varied along a single track length according to a specified linear function. The expressions derived from the model were used to plot the experimental data in a coherent manner, revealing the combined role of the different processing parameters.

Open Access: Yes

DOI: DOI not available

Sparse fuzzy systems generation and fuzzy rule interpolation: A practical approach

Sz Kovacs T. D. Gedeon L. T. Koczy None Chong

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2003-07-11

Volume: 1

Issue: Unknown

Page Range: 494-499

Description:

In this paper, we explore the use of a sparse fuzzy system generation technique in conjunction with simple projection-based fuzzy rule interpolation, to generate sparse fuzzy systems with relatively few rules whilst still achieving reasonable system accuracy. Through setting a parameter value, the user is able to control, to some extent, the number of rules generated by the rule extraction technique. The rule interpolation approach enables the sparse fuzzy system to maintain a reasonable accuracy. The effectiveness of this approach is validated experimentally.

Open Access: Yes

DOI: DOI not available

A common periodic table of codons and amino acids

Balázs Benyó G. Fördös J. C. Biro Á Szlávecz T. Micsik Zoltán Benyó C. Sansom

Publication Name: Biochemical and Biophysical Research Communications

Publication Date: 2003-06-27

Volume: 306

Issue: 2

Page Range: 408-415

Description:

A periodic table of codons has been designed where the codons are in regular locations. The table has four fields (16 places in each) one with each of the four nucleotides (A, U, G, C) in the central codon position. Thus, AAA (lysine), UUU (phenylalanine), GGG (glycine), and CCC (proline) were placed into the corners of the fields as the main codons (and amino acids) of the fields. They were connected to each other by six axes. The resulting nucleic acid periodic table showed perfect axial symmetry for codons. The corresponding amino acid table also displaced periodicity regarding the biochemical properties (charge and hydropathy) of the 20 amino acids and the position of the stop signals. The table emphasizes the importance of the central nucleotide in the codons and predicts that purines control the charge while pyrimidines determine the polarity of the amino acids. This prediction was experimentally tested. © 2003 Elsevier Science (USA). All rights reserved.

Open Access: Yes

DOI: 10.1016/S0006-291X(03)00974-4

The theory of humanitarian intervention with special regard to NATO's Kosovo mission

Gábor Sulyok

Publication Name: Understanding the War in Kosovo

Publication Date: 2003-04-01

Volume: Unknown

Issue: Unknown

Page Range: 143-161

Description:

No description provided

Open Access: Yes

DOI: 10.4324/9780203500736

Examination of formability of cast aluminium alloy

E. Halbritter Ágnes Csizmazia

Publication Name: Materials Science Forum

Publication Date: 2003-01-01

Volume: 414-415

Issue: Unknown

Page Range: 15-20

Description:

Ring upsetting has been used to upset AlSi9Cu3 cast alloy in order to examine formability as well as the effect of deformation. Maier scalar quantity, which characterises the stress state, has been calculated. It is concluded that, from the point of view of maximum deformation, ring upsetting tests are more advantageous than simple upsetting tests.

Open Access: Yes

DOI: 10.4028/www.scientific.net/msf.414-415.15

State dependent anytime control methodology for prototypical aeroelastic wing section with structural non-linearity

P. Várlaki L. Kiss A. R. Várkonyi-Kóczy P. Baranyi

Publication Name: IEEE International Symposium on Industrial Electronics

Publication Date: 2003-01-01

Volume: I

Issue: Unknown

Page Range: 200-205

Description:

Nowadays in solving control problems the processing is performed typically by model-based computer systems, which contain a representation of our knowledge about the nature and the actual circumstances of the problem in hand. If the nature and/or the actual circumstances change the corresponding model should also be changed. Anytime techniques are very flexible in this respect and can advantageously be used when the operation should be performed under changing circumstances. In this paper, a nonlinear state dependent control methodology is proposed for anytime use and as an example is applied to globally stabilize a given prototypical aeroelastic wing section via one control surface.

Open Access: Yes

DOI: 10.1109/ISIE.2003.1267245

Dimensioning of the reinforced concrete structures old and new presrciptions in Hungary

No authors available

Publication Name: Proceedings of the fib Symposium 2003: Concrete Structures in Seismic Regions

Publication Date: 2003-01-01

Volume:

Issue:

Page Range: 264-265

Description:

Open Access: No

DOI: DOI not available

Minorities and the free press in Hungary after 1867

MihÁly RÉvÉsz

Publication Name: Parliaments Estates and Representation

Publication Date: 2003-01-01

Volume: 23

Issue: 1

Page Range: 123-130

Description:

The study analyses the status and the standard of freedom of the press in Hungary in the first decade of the Austro-Hungarian monarchy. Special attention is paid to libel cases against nationality papers attacking the government in Pest. The author's main purpose is to discuss the limits on the freedom of the press drawn by criminal law, and in addition, to examine the accusations against the oppositional papers and the court practices involved. As a result, the study emphasizes that the picture of ‘the press under a state of siege’ could hardly be verified from the criminal procedures examined. The author does not, however, paint an idealized picture of the freedom of the press. The government in Pest was biased against the nationality papers. Yet even so, in the first ten years of Dualism juries adjusted the official criminal law policy by acquittals of authors and editors. The prosecuting magistracy therefore accepted the independence of the jury and the unreliability of the lay judges, and often withstood the demands of government departments. The members of the government of Hungary accepted the practice instituted by the prosecuting magistracy and ‘instead of strict laws and even more strict courts’ they gave up trying to rule the press by means of the criminal law. The first half of the 1870s thus became a period of a free press, indicating to what extent the parliamentary system and its government in Dualism could ‘practise liberalism without risking its own existence’. © 2003, Taylor & Francis Group, LLC. All rights reserved.

Open Access: Yes

DOI: 10.1080/02606755.2003.9522171