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Found 5164 publications

Selection from a fuzzy signature database by Mamdani-algorithm

Katalin Tamás L. T. Koczy

Publication Name: Sami 2008 6th International Symposium on Applied Machine Intelligence and Informatics Proceedings

Publication Date: 2008-08-25

Volume: Unknown

Issue: Unknown

Page Range: 63-68

Description:

There are many complex, well structured problems, where a hierarchical structure within the data is present. This means, that one or several components of the structure are determined at a higher level by a sub-tree of other components. The concept of fuzzy signatures was introduced to help model these kinds of problems. The data set belonging to a problem has an arbitrary structure, but due to some missing components, the structures of the data may slightly differ. So that these data can be evaluated, aggregation operators are given for each node in the arbitrary structure for the purpose of modifying the structure. To deduce a conclusion for an observation from a data set having the structure mentioned above, fuzzy signature based rule bases and the generalisation of Mamdani-type inference were introduced. In this paper the formerly introduced idea of Mamdani-type inference in fuzzy signature based rule bases will be used for selecting records from an available data base which maximally match the requirements specified in a pattern. Finally a possible application on a realistic example with missing data components will be shown. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/SAMI.2008.4469135

The bases of values in the motivation of the choice of career among professional nursing students and students learning at teacher's training college

Kovácsné Tóth Ágnes

Publication Name: Orvosi Hetilap

Publication Date: 2008-08-24

Volume: 149

Issue: 34

Page Range: 1601-1608

Description:

For the profession of teachers and nurses we need well-trained, highly qualified employees with a sense of vocation. Aim: A comparative analysis of motivation in the choice of career among professional nursing students and teacher-students. Methods: This analysis was done in Hungary among professional nursing students and students participating in teacher training. In this sample 783 students were analysed. Results: In the choice of career of nurses and teachers the primary motivation is of altruistic nature and also the human characteristics of the chosen career. According to genders in the case of female interviewed people we got a higher value than in the case of males in connection with "Helping people". It is more typical in the case of professional nursing students to choose the career as early as in their childhood. Choosing the career at a later age is typical for those who are teacher-students. Conclusion: As a consequence of our rapid economic changes or because of the dissatisfaction caused by career, we have to face the fact that the qualification obtained at a young age will not last till the end of life, the majority of people are forced to change their jobs several times during their lives. In harmonizing the demands of the labour market and education, those people who take part in education and professional training have a favoured role.

Open Access: Yes

DOI: 10.1556/OH.2008.28437

Nodal and vector finite elements in static and eddy current field problems

Miklós Kuczmann

Publication Name: Pollack Periodica

Publication Date: 2008-08-01

Volume: 3

Issue: 2

Page Range: 85-96

Description:

The numerical analysis or design of an arrangement, which require electromagnetic field calculation, can be characterized by the electric and magnetic field intensities and flux densities. For determination of these field quantities in the electromagnetic field, one method is to find the solution of the partial differential equations of the field quantities under prescribed boundary conditions obtained from Maxwell's equations. The Finite Element Method (FEM) is a possible technique to solve partial differential equations, which is based on the weak form of the weighted residual method. The paper presents some potential formulations, which can be used for solving static magnetic field problems and eddy current field problems with the help of FEM. Some examples are also presented at the second part of the paper. © 2008 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.3.2008.2.8

Eddy current analysis with nonlinearity

Miklós Kuczmann Dániel Marcsa

Publication Name: Pollack Periodica

Publication Date: 2008-08-01

Volume: 3

Issue: 2

Page Range: 97-109

Description:

The paper deals with an eddy current field problem as a case study. The aim is to find the solution of the problem by the help of the Finite Element Method (FEM), and the T, , potential formulation taking the nonlinearity of the material into account. The effect of nonlinearity has been approximated with an inverse tangent type analytical model. The nonlinearity has been handled by the polarization method coupled with the Fixed-point iteration technique. © 2008 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.3.2008.2.9

Error handling techniques of genetic algorithms in parallel computing environment

F. Hatwágner Andras Horvath

Publication Name: Pollack Periodica

Publication Date: 2008-08-01

Volume: 3

Issue: 2

Page Range: 3-14

Description:

It is easy to create parallel genetic algorithm software with master-slave type paralelization on a cluster of workstations. In a real situation the probability of errors in communication or in some of the slave processes during a long calculation is significant. In this paper we deal with different error handling strategies in master-slave type paralelization of standard GA algorithms and show results of test calculations. Our simulations are close to real applications in the sense that we examine the best achieved objective function value at a fixed wall clock time with different error handling strategies depending on the probability of errors and number of processors. Using these results we make suggestions on the selection of a good error handling method in different optimization problems. © 2008 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.3.2008.2.1

Similarities and differences in the social background of female medical, nursing and health visitor students

Kovácsné Tóth Ágnes Helga Judit Feith Péter Balázs Kiss Zsuzsanna Soósné

Publication Name: Orvosi Hetilap

Publication Date: 2008-06-15

Volume: 149

Issue: 24

Page Range: 1137-1142

Description:

According to our knowledge, there has never been a comprehensive research in Hungary dealing with healthcare university or college students' social background. Aim: The main objectives of our cross-section research were to analyze differences in the social background of female students who decided to become doctors, professional nurses and health visitors. Method: This research was conducted among female medical and nursing college students at the Semmelweis University. There were 295 students invited to participate, the response rate was 68,08% (N = 201). Data analysis was performed by SPSS software by using descriptive methods of statistics. Results: We found a decisive difference among medical, nursing and health visitor students while analyzing a number of socio-demographic characteristics. Most medical students came from families where the parents had college or university degrees, but we can state that there is a minimal likelihood in the case of college students that they are descendants of parents with higher educational degrees. We did not find statistical differences in the three student sample groups regarding their marital status, but fewer nursing college students lived in marriage or household partnership. Conclusion: We found a significant difference in the social background of nursing college and medical students. The social disadvantages of nursing and health visitor students are more considerable than those of medical students.

Open Access: Yes

DOI: 10.1556/OH.2008.28393

Characterisation of hardening performance of quenchants by integrated numerical method

I. Felde T. Reti

Publication Name: International Heat Treatment and Surface Engineering

Publication Date: 2008-06-01

Volume: 2

Issue: 2

Page Range: 55-59

Description:

An integrated numerical technique for evaluation of hardening performance of cooling media applied for steel quenching is outlined. The newly developed method is based on the specific processing of measured time-temperature samples performed as a result of cooling curve tests. The heat transfer coefficient as a function of surface temperature characterises the heat transfer during cooling and is calculated using an iterative inverse algorithm. The heat transfer coefficient is used for calculation of the microstructural constituents and the hardness profile of cylindrical samples of arbitrary diameter. The hardening performance of media is evaluated by the estimated hardness of specimens obtained by heat treatment. © 2008 IHTSE Partnership.

Open Access: Yes

DOI: 10.1179/174951508X318404

The concepts of state responsibility and liability in nuclear law

Gábor Kecskés

Publication Name: Acta Juridica Hungarica

Publication Date: 2008-06-01

Volume: 49

Issue: 2

Page Range: 221-252

Description:

The legal concept and the doctrinal theory of state responsibility and liability have been in the focus of public international law for a long while. By means of domestic legislation, national law-regardless of the relevance of the international legal framework-governs the system of civil liability within the area of civil law of each state. Whereas, as opposed to the framework of civil liability governed by diverse domestic rules, exclusively a standard regulation framed at an inter-state level can secure a uniform system of state liability. The issue of state responsibility for nuclear damages raises specific questions to be examined in the framework of general international regulations (e.g., Conventions adopted within the area of nuclear law) related to responsibility and liability. Thus, answering or the clarification of these specific pivotal questions within the scope of public international law shall be our starting point, which may also entail the modification of the matter of state responsibility and liability (not only in the concerned branch of law). © 2008 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/AJur.49.2008.2.4

Family and carrier role conflicts of female health professionals

Kovácsné Tóth Ágnes Feith Helga Judit Balázs Péter

Publication Name: Lege Artis Medicinae

Publication Date: 2008-05-01

Volume: 18

Issue: 5

Page Range: 413-418

Description:

The aim of this study was to gain statistically founded information about female health care workers' career and family role burden and role-conflicts in relation to their general health status. SUBJECTS AND METHODS - The survey was conducted among women doctors and college-degree nurses working in in-patient institutes and was based on self-provided information obtained from mailed questionnaires. The response rate was 45.54% (n=409). RESULTS - The exclusively career-oriented or family-oriented ways of life were both dismissed by a larger proportion of respondents, as these were considered equally important. Work-to-family conflicts were reported by 44.8%, mainly mentioning night shifts, lack of time and too much workload as a cause. One in five (19.5%) respondent reported family-to-work conflicts. The role conflicts correlate with life and career satisfaction, plans to leave profession, health status and the prevalence of psychosomatic symptoms. CONCLUSION - The results suggest the presence of many conflict points between the family and career roles of health care professionals working in the Hungarian healthcare system. The role-conflict had an explicitly negative effect on the respondents' general satisfaction and health status. The importance of this subject warrants further analytic and comparative investigations.

Open Access: Yes

DOI: DOI not available