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Found 6289 publications

A survey of assistive technologies and applications for blind users on mobile platforms: a review and foundation for research

Adam B. Csapo Hunor Nagy György Wersényi Tony Stockman

Publication Name: Journal on Multimodal User Interfaces

Publication Date: 2015-12-01

Volume: 9

Issue: 4

Page Range: 275-286

Description:

This paper summarizes recent developments in audio and tactile feedback based assistive technologies targeting the blind community. Current technology allows applications to be efficiently distributed and run on mobile and handheld devices, even in cases where computational requirements are significant. As a result, electronic travel aids, navigational assistance modules, text-to-speech applications, as well as virtual audio displays which combine audio with haptic channels are becoming integrated into standard mobile devices. This trend, combined with the appearance of increasingly user-friendly interfaces and modes of interaction has opened a variety of new perspectives for the rehabilitation and training of users with visual impairments. The goal of this paper is to provide an overview of these developments based on recent advances in basic research and application development. Using this overview as a foundation, an agenda is outlined for future research in mobile interaction design with respect to users with special needs, as well as ultimately in relation to sensor-bridging applications in general.

Open Access: Yes

DOI: 10.1007/s12193-015-0182-7

Increasing relevance of non-human genetics in Hungarian forensic practice

Petra Zenke Gabor Kovacs Zsolt Pádár Balázs Egyed

Publication Name: Forensic Science International Genetics Supplement Series

Publication Date: 2015-12-01

Volume: 5

Issue: Unknown

Page Range: e250-e252

Description:

In step with the evolution of molecular genetics, the application of non-human biological traces is an intensively researched field in forensic sciences [1]. Recently it has been widely acknowledged that this extended possibility – with associated abilities and pitfalls – for forensic DNA examination can provide innovative results in criminal and civil casework as well as in connection with associative evidence. Depending on the specific species or types of traces, the final results can have very different criminalistics value (e.g., plants, dogs or microbiome of soil traces), but it is unquestionable that non-human DNA has an increasing role in forensic biological evidence [2–4]. However, in contrast to the investigation of human DNA-traces, there currently exist no restrictions concerning DNA loci and privacy of genetic information, and a wide spectrum of genetic information and technologies may be applied. The field is developing with animal rights, international (e.g. CITES) conventions, national regulations and professional recommendations [5–7]. The Hungarian forensic practice on animal DNA examination has been developing since 2000 [8]. The range of cases is sufficiently broad, and includes fatal accidents and animal attacks (case #1) as well as illegal trade cases (case #2). In case of degraded animal hair samples we used two sets of Canine STR markers with shortened amplicons, and species specific primers (Ursus sp.) for mitochondrial DNA analysis of mixed samples (case #2), respectively. The results supported the evaluation of individualization (case #1), confirming the species identification (case #2).

Open Access: Yes

DOI: 10.1016/j.fsigss.2015.09.100

The Renewed Constitutional level of Environmental Law in Hungary

Gergely Horváth

Publication Name: Acta Juridica Hungarica

Publication Date: 2015-12-01

Volume: 56

Issue: 4

Page Range: 302-316

Description:

Environmental law is encroaching into the legal system, because it orders the following of the imperative principle of integration, according to which it is necessary to build environmental considerations and priorities into all norms, plans and activities using or affecting the environment. The highest level of national environmental legislation is the Fundamental Law of Hungary (25 April 2011), which also has new environmentally relevant provisions, which are worth analysingas they serve to protect the natural foundations of life. This assured defence of the interest of future generations stems from the human right to a healthy environment, which is linked to the respect of human dignity and life. This human right belongs to the third generation, the solidarity or collective-developmental group of rights. The Fundamental Law also comprises several subfields of environmental law by mentioning their protected subjects and emphasizing their importance.

Open Access: Yes

DOI: 10.1556/026.2015.56.4.5

Parameterization and concept optimization of FCM models

Miklós F. Hatwágner L. T. Kóczy

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2015-11-25

Volume: 2015-November

Issue: Unknown

Page Range: Unknown

Description:

Fuzzy Cognitive Maps (FCM) are widely used to model and analyze the behavior of complex multicomponent systems. The application of FCM might be non-trivial in some specific context, however. Two rather general problems of the application of FCM and respective solutions are described in this paper. The first problem is as follows: In some cases the concept values obtained at the end of an FCM simulation are very similar. If this occurs, the order of concepts, thus their relative importance cannot well defined. The second problem is to select the appropriate concepts and to define their number. The concepts are given by human experts, but the selection of the appropriate concepts which help to reach the required accuracy of the model, while keeping the model as simple as possible is a difficult task. This paper deals with these two (connected) problems and proposes solutions for them. The proposed solution for the first problem is to choose the optimal λ parameter value in the threshold function, the one for the second is to apply a 'state reduction method' based on fuzzy tolerance relations presented in the paper.

Open Access: Yes

DOI: 10.1109/FUZZ-IEEE.2015.7337888

Evaluating the life quality of the built environment by FRI method

Szilveszter Kovacs Gergely Molnarka L. T. Kóczy

Publication Name: IEEE International Conference on Fuzzy Systems

Publication Date: 2015-11-25

Volume: 2015-November

Issue: Unknown

Page Range: Unknown

Description:

The fuzzy rule interpolation (FRI) and the fuzzy signature methodology was successfully adapted for expressing the building condition. In this paper we extend this concept for estimating the life quality of the built environment, especially of the residential segment. The applied methodology is based on a hierarchical FRI as a straightforward implementation of the fuzzy signature concept. The paper also introduces some application details of a case study related to residential houses located in a historic district of Budapest, Hungary.

Open Access: Yes

DOI: 10.1109/FUZZ-IEEE.2015.7338029

Wavelet based fuzzy rule bases in pre-qualification of access networks' wire pairs

Ferenc Lilik L. T. Kóczy Szilvia Nagy

Publication Name: IEEE AFRICON Conference

Publication Date: 2015-11-18

Volume: 2015-November

Issue: Unknown

Page Range: Unknown

Description:

Even though the penetration of the fibre optical cables into telecommunication access networks seems to be accelerated, most of the customers are connected to the central office or to the telecommunication nodes by the copper wire pairs of the old telephone network. Until the replacement of the lines, their needs for modern high speed data communications services can be fulfilled by these symmetrical wire pairs. Equipment manufacturers produce equipments of the latest technologies for these networks (e.g. VDSL2), however pre-qualification of wire pairs of access networks is also essential, as the estimation of the performance gives the possibility to optimize the offered ensemble of services for telecommunications service providers. Our previous performance evaluation method based on fuzzy rule bases at discrete values of the insertion loss at 6 characteristic frequencies is improved by wavelet analysis. We have also proved, that the fine structure of the insertion loss spectrum does not play role in the achievable data transfer rate of the lines.

Open Access: Yes

DOI: 10.1109/AFRCON.2015.7332034

Fuzzy signature based description of complex overtaking and engagement conflicts in railway traffic control

Gabor Rozsa Áron Ballagi L. T. Kóczy

Publication Name: IEEE AFRICON Conference

Publication Date: 2015-11-18

Volume: 2015-November

Issue: Unknown

Page Range: Unknown

Description:

The railway traffic system and its respective subsystems, especially station and timetable management are extremely large and complex systems comprising a multitude of complex structured data. The theoretical and pre-planned traffic control is calculating with idealized traffic situations, but the real life scenes often suffer from conflicts and deviations. The complex traffic conflict states include uncertain conditions and vagueness of information. Classical methods cannot work properly under these uncertain conditions. In this paper we propose a new approach to describe these complex conflict situations using fuzzy signatures for recognizing and describing traffic conflicts in a hierarchically structured manner.

Open Access: Yes

DOI: 10.1109/AFRCON.2015.7331929

Systematic approach to software related tasks in electric fuel-efficiency vehicle development

Ernö Horváth Péter Kőrös

Publication Name: Ines 2015 IEEE 19th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2015-11-13

Volume: Unknown

Issue: Unknown

Page Range: 375-378

Description:

Nowadays software related tasks in experimental vehicle development are getting more and more attention. These tasks not only include the final product related software solutions such as the motor and the vehicle control algorithm or the telemetry system but even in the development process, applications are needed - for example on the motor test bench. The paper presents our ideas and solutions to software related tasks in vehicles for the whole development and validation process.

Open Access: Yes

DOI: 10.1109/INES.2015.7329737

Thermal impact assessment with hydrodynamics and transport modeling

Viola Somogyi Viktor Sebestyén A. Zseni Zoltán Papp Endre Domokos

Publication Name: Energy Conversion and Management

Publication Date: 2015-11-01

Volume: 104

Issue: Unknown

Page Range: 127-134

Description:

While the number of installed geothermal heat pump systems is rising legislation is not prepared to address the issues concerning thermal impact. The aim of this paper is to model the effects of geothermal heat pump systems installed to shallow geothermal reservoirs in sedimentary formation based on the results of a real system in order to show the magnitude of the thermal affected zone. The system examined is a standalone geothermal heat pump with a production and an injection well-being able to produce a maximum of 3.4 m3/h groundwater. The thermal impact determined by simulation was 35 m for the standalone system. Two scenarios were considered to define the impact of two neighboring open-loop systems on each other. The results show that if two systems are to be installed on the same reservoir the minimum distance should be 55 m. That indicates that in case of designing systems installed to similar hydrogeological environment should consider the change in the water table and increased thermally affected zone if other groundwater heat pumps are in the area.

Open Access: Yes

DOI: 10.1016/j.enconman.2015.04.045