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Publications - 6374

Application of design tools in carbody construction harmonizing shape and dynamical load

No authors available

Publication Name: Proceedings of the Mini Conference on Vehicle System Dynamics, Identification and Anomalies

Publication Date: 2012-01-01

Volume: 2012-November

Issue:

Page Range: 379-386

Description:

There are two main areas highlighted in the paper concerning car body manufacturing: construction and design work or in other words functionality and aesthetics. The question is to be answered: Which is more important? The solution is untying this quasi contradiction, but it is not an easy task. The ergonomical and aesthetical demands are not unambiguous; they depend also on weather conditions, different anthropometrics, changeable conditions during operation, attitudes, traditions, mentalities, local and actual trends etc. Nowadays the external and internal design does not belong to the main constructor or automotive engineer. The major original equipment manufacturers (OEM) charge special designers to do such work similarly to the separated engine, axles, brake system, electric network design. Nevertheless there are many details that must fit together in the vehicle. As long as the different engineering interests can be harmonized in a rational way, in aesthetical and design questions tastes can be decisive beside rationality. This makes the decisions difficult. The GIST of the cooperation is that future automotive engineers must know the designer's way of thinking at least the main stream in order to consider and make good decisions.

Open Access: No

DOI: DOI not available

Beyond land use: Understanding variations in topsoil bulk versus recalcitrant organic matter

Tibor Filep Gabriella Darabos Csaba Centeri Zsuzsanna Angyal Balázs Madarász András Bidló Viktoria Vona Ákos Bede-Fazekas Gábor Szatmári Dóra Zacháry Csilla Király Máté Karlik Anna Vancsik Thulfiqar Al-Graiti Malihe Masoudi Zoltán Dévény Zoltán Szalai Gergely Jakab

Publication Name: Catena

Publication Date: 2024-09-01

Volume: 244

Issue: Unknown

Page Range: Unknown

Description:

Soil organic matter (SOM) concentration and composition are essential properties that affect most functions and ecosystem services. The relationship between soil and environmental covariates regarding SOM concentration and composition in various pools is not completely understood. This study aimed to identify the most influential drivers of SOM stabilization, focusing on arable lands in Hungary. Hungary is an ideal area for investigating SOM variability because it is at the meeting point of the three main climate effects that trigger a wide range of soil, land use, and topographical conditions. Overall, 87 soil samples were taken from the topsoil (2–20 cm) and fractionated (<20 µm) to separate the mineral phase-associated organic carbon (MAOC) and bulk pools. MAOC concentration varied on a wide range (0.5–14.1 %) and was the function of bulk SOM aromaticity and slope steepness, rather than land use, climatic conditions, or soil properties, indicating that MAOC is also affected by decomposition if the bulk OM is less available for the microbiome. Land use, especially in forest topsoils, reflects the elemental composition of the OM, focusing on the variations of residue composition. In contrast, aromaticity is rather related to soil and climate properties, suggesting increased relevance of transformation processes. As a consequence, SOM composition varies on a wide range in the topsoil, however, the lack of a definite trend at the county level suggests the complexity of the system and highlights the role of local circumstances.

Open Access: Yes

DOI: 10.1016/j.catena.2024.108232

The sociodemographic obstacles to participating in lifelong learning across Europe

No authors available

Publication Name: Lifelong learning in europe: Equity and efficiency in the balance

Publication Date: 2012-01-01

Volume:

Issue:

Page Range: 87-102

Description:

Open Access: No

DOI: DOI not available

Development of nanoclay reinforced HDPE/PA6 nanocomposites

No authors available

Publication Name: ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials

Publication Date: 2012-01-01

Volume:

Issue:

Page Range: Unknown

Description:

In our experiments HDPE/PA6 blends (75/25 wt%) were produced and maleic anhydride grafted polyethylene (PEgMA) was used as chemical coupling agent. To enhance the mechanical properties the blends were compounded with the layered structure montmorillonite (MMT) in different concentrations. The effect of PEgMA, MMT and their combination on the mechanical and melting properties were examined in this study.

Open Access: No

DOI: DOI not available

Development of production logistics system based on lean principles

No authors available

Publication Name: International Conference on Industrial Logistics, ICIL 2012 - Conference Proceedings

Publication Date: 2012-01-01

Volume:

Issue:

Page Range: 349-355

Description:

This paper acquaints the production logistics system about a Hungarian operating vehicle part manufacturing company, including its examination, and development opportunities. This paper's highlighted objectives are the preparation and analysis of the basic data of development recommendation. Moreover, it demonstrates lean based outsourcing strategies which could significantly reduce the company's handling demands.

Open Access: No

DOI: DOI not available

Trade-offs in production supply systems

No authors available

Publication Name: International Conference on Industrial Logistics, ICIL 2012 - Conference Proceedings

Publication Date: 2012-01-01

Volume:

Issue:

Page Range: 356-361

Description:

The cost price of a final product depends on - among others - the cost of value added processes such as production supply. When planning the supply strategy and defining the parameters of the processes we face a lot of trade-off situations (e.g.: decision between kanban or other supply strategy, kanban quantity, production line loading cycle time, maximal number of picking items on picking lists, etc.). The aim of this paper is to list these decision situations and give adequate solutions on them. By means of mathematical modeling we define the optimal system parameter configuration of a production supply system where the total cost is minimal.

Open Access: No

DOI: DOI not available

Towards the modelling of the fault tolerance mechanism of the PIM-SM multicast routing protocol in an IPTV environment

No authors available

Publication Name: ESM 2012 - 2012 European Simulation and Modelling Conference: Modelling and Simulation 2012

Publication Date: 2012-01-01

Volume:

Issue:

Page Range: 152-156

Description:

The fault tolerance mechanism of the PIM-SM IP multicast routing protocol is investigated in order to be able to model it. The analysis is done by playing different fault scenarios on a mesh topology multicast test network built up by XORP routers in a virtualized environment. Different parameters of the PIM-SM and the OSPF protocols are examined if they influence and how they influence the outage time of an IPTV service. The results of the experiments provide important factors for building a formal model of the service outage time of an IPTV service. © 2012 EUROSIS-ETI.

Open Access: No

DOI: DOI not available

Thoughts on the necessity of security council reform

Gábor Sulyok

Publication Name: Acta Juridica Hungarica

Publication Date: 2007-06-01

Volume: 48

Issue: 2

Page Range: 143-167

Description:

The declared objective of recent efforts to reform the Security Council is to increase effectiveness. A careful investigation applying certain theses of organization theory, however, reveals that neither the prevailing structure nor the working methods of the Council unavoidably hamper the achievement of organizational goals; therefore, arguments pertaining to the issue of effectiveness do not necessarily justify reform proposals. A similar conclusion can be reached by examining other possible causes of reform, namely the fundamental change of organizational environment, power struggles between various principal organs of the United Nations, and some harshly criticized features of the Council itself. It seems that the necessity of reform is rooted in various individual and highly subjective interests of member states rather than objective circumstances, and the organization has no other option, but to fulfill their demands in order to secure its own survival. © 2007 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/AJur.47.2007.2.4

Numerical methods for digitally synthetic holograms

No authors available

Publication Name: Civil-Comp Proceedings

Publication Date: 2012-01-01

Volume: 100

Issue:

Page Range: Unknown

Description:

The main purpose of this paper is to develop a program package which generates artificial holograms by numerical methods and these computer generated holograms are numerically reconstructed. For the calculation of light propagation needed in the generation of holograms or in the reconstruction of the object from the hologram, two strategies are used. The first is the Fourier-based algorithm where the diffraction integral is approximated as a convolution integral, allowing computation using the fast Fourier transform algorithm. The second uses finite difference discretization to solve the parabolic wave equation. Numerical tests that assess the accuracy of these algorithms are presented. © Civil-Comp Press, 2012.

Open Access: No

DOI: DOI not available