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Found 6374 publications

Training electrical engineers on asynchronous logic circuits based on constant weight codes

Gabor Rozsa A. Nagy P. Keresztes Laszlo T. Koczy

Publication Name: IEEE AFRICON Conference

Publication Date: 2011-12-12

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

The paper introduces a new way for teaching of delay insensitive asynchronous logic circuits. The studies start on high level models, which are VHDL implementations of Dennis-type static dataflow systems. Investigating the operation of the concurrent processes of these models, the main elements of the delay insensitive systems can be derived. Introducing constant weight 'm-of-n' codes immediately at the beginning of the course leads to a proper generalization. So the well known dual-rail code circuits can be considered as special cases of the constant weight code delay insensitive circuits. The paper presents briefly the design practice sessions for students. © 2011 IEEE.

Open Access: Yes

DOI: 10.1109/AFRCON.2011.6072041

Possibilities for further development of the driver's seat in the case of a non-conventional seating positions

I. Lakatos Laszlo Porkolab

Publication Name: Heliyon

Publication Date: 2024-04-15

Volume: 10

Issue: 7

Page Range: Unknown

Description:

The seat significantly contributes to driving safety. Ergonomic seats prevent physical strain and fatigue, so attention and concentration do not drop so quickly, which helps to avoid accidents. The article generally presents the development of seats used in cars and the current areas of use of rotatable seats. Furthermore, it gives an overview of the possible seating positions for fully autonomous vehicles. The article leads the reader through the crash test simulation focusing on the model used. Subsequently, the article presents the research results so far and the possibilities for further development of the driver's seat. The article highlights the change in the driver's movement kinematics as a crucial observation. This change significantly increases the risk of serious injury. In frontal collisions, the modified seat consistently demonstrates results below the specified limit. It is important to note that there are injury values that increase, but these are not a problem because they remain below the limit. In the case of a side collision, the aim was less to reduce injury values and more to better coordinate the kinematics of the passenger's movement during the accident. It can be concluded that this is achievable with the modified seat, as the passenger's movements are notably more predictable and coordinated under these circumstances.

Open Access: Yes

DOI: 10.1016/j.heliyon.2024.e28909

Identification and interpretation of acausal synchronistic cognitive patterns in the long-run dream-series of C. G. Jung and W. Pauli (1927-1936) Part I. Jung as observer for Pauli's future experiences

Peter Varlaki Péter Baranyi

Publication Name: 4th IEEE International Conference on Cognitive Infocommunications Coginfocom 2013 Proceedings

Publication Date: 2013-01-01

Volume: Unknown

Issue: Unknown

Page Range: 699-710

Description:

The paper deals with the identification and interpretation of the 'unconscious' cognitive images, patterns and ideas according to some remarkable synchronistic phenomena in the acausal mostly unconscious 'relationship' of Carl Gustav Jung and Wolfgang Ernst Pauli at the period of 1927-1936 on the basis of Jung's 'observations' related to Pauli's future 'experiences.' © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/CogInfoCom.2013.6719192

Nexus between climate change, agricultural output, fertilizer use, agriculture soil emissions: Novel implications in the context of environmental management

Irum Shahzadi Mohammad Sharif Karimi Kamel Si Mohammed Jiapeng Dai Biao Ma Irum Shahzadi

Publication Name: Journal of Cleaner Production

Publication Date: 2024-04-15

Volume: 450

Issue: Unknown

Page Range: Unknown

Description:

In evaluating the influence of greenhouse gases (GHGs) on climate change, the effectiveness of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) is intricately tied to their atmospheric turnover rates, which play a crucial role in their heat-trapping capacity. Understanding the dynamics of how these gases cycle through the atmosphere is essential for assessing their respective contributions to the greenhouse effect and, consequently, their impact on global warming and climate change. The prime objective of this research is to examine the role of climatic change, agriculture output, and fertilizer use on the agriculture soil's greenhouse gas emissions. In doing so, the present study has focused on the temperature of land, fertilizer consumption, crop and livestock production, and energy used in agriculture soils on the pollution level of agricultural soils. The study further delineates the intricate interdependencies between climate change factors and GHG emissions using novel econometric methodologies, specifically the PMG-ARDL, SC-ARDL, and Dumitrescu Hurlin Panel Causality frameworks. In doing so, we use a large panel dataset spanning 1990 to 2020. The estimations show that climate change, as measured by variations in terrestrial temperature, has a discernible and positive impact on GHG emissions over the short and long term. Energy consumption and livestock production positively correlate with GHG emissions, with the former having a more pronounced effect. The implications of fertilizer usage and overall crop yield become noticeably significant in the long term. It emphasizes the importance of using a diachronic perspective when assessing GHG emissions in the agricultural sector. It is also worth noting that agricultural land use appears to negatively impact GHG emissions, emphasizing the importance of implementing sustainable land management practices to mitigate adverse environmental consequences. The study also explores the causality between climate change, agricultural practices, and GHG emissions, revealing a bidirectional association between climatic change and soil emissions. Additionally, unidirectional causation is observed from fertilizer consumption and crop production to emissions, underscoring the importance of adopting sustainable agricultural practices to reduce emissions. The findings offer valuable insights for governments and researchers to create sustainability-related strategies for dealing with climate change issues, safeguarding natural resources, and ensuring a sustainable future for agriculture.

Open Access: Yes

DOI: 10.1016/j.jclepro.2024.141801

Maximal entropy and minimal variability OWA operator weights: A short survey of recent developments

Christer Carlsson Robert Fuller

Publication Name: Studies in Fuzziness and Soft Computing

Publication Date: 2018-01-01

Volume: 357

Issue: Unknown

Page Range: 187-199

Description:

The determination of ordered weighted averaging (OWA) operator weights is a very important issue of applying the OWA operator for decision making. One of the first approaches, suggested by O’Hagan, determines a special class of OWA operators having maximal entropy of the OWA weights for a given level of orness; algorithmically it is based on the solution of a constrained optimization problem. In 2001, using the method of Lagrange multipliers, Fullér and Majlender solved this constrained optimization problem analytically and determined the optimal weighting vector. In 2003 Fullér and Majlender computed the exact minimal variability weighting vector for any level of orness using the Karush-Kuhn-Tucker second-order sufficiency conditions for optimality. The problem of maximizing an OWA aggregation of a group of variables that are interrelated and constrained by a collection of linear inequalities was first considered by Yager in 1996, where he showed how this problem can be modeled as a mixed integer linear programming problem. In 2003 Carlsson, Fullér and Majlender derived an algorithm for solving the constrained OWA aggregation problem under a simple linear constraint: the sum of the variables is less than or equal to one. In this paper we give a short survey of numerous later works which extend and develop these models.

Open Access: Yes

DOI: 10.1007/978-3-319-60207-3_12

Real-time representation of the human spine with absolute orientation sensors

Claudiu Radu Pozna Csaba Antonya Silviu Butnariu

Publication Name: 2016 14th International Conference on Control Automation Robotics and Vision Icarcv 2016

Publication Date: 2016-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper presents a new algorithm for the real-time representation of a spine using a mobile device for recording and analyzing the human body posture. The measurements are based on inertial measuring units (IMU), which are providing the pitch angles of five points of a cord attached to the clothing (t-shirt or jacket). The algorithm developed for the real-time representation of the spine is based on quadratic Bézier curves defined in a reference frame attached to the first sensor from the head. The curve is obtained knowing the distances between the sensors and the measured pitch angles. The line of the spine is reconstructed with four segments of Bézier curves, meeting the requirement of continuity of the tangents. The obtained postures are compared with a normal one, identified by the medical specialist, by computing the average absolute distances between them. The recorded movement of the spine can be used for diagnosis purposes, and the real-time tracking for therapy by warning the user to correct his/her posture. The warning message is delivered with buzzers attached to the clothing by applying haptic stimuli on the back.

Open Access: Yes

DOI: 10.1109/ICARCV.2016.7838745

Implementation of event driven software gates for combinational logic networks

József Kopják János Kovacs

Publication Name: 2012 IEEE 10th Jubilee International Symposium on Intelligent Systems and Informatics Sisy 2012

Publication Date: 2012-12-12

Volume: Unknown

Issue: Unknown

Page Range: 299-304

Description:

The paper presents one implementation possibility of event driven software model of distributed or classical combination logic networks. The paper first reviews the basics of event-driven systems. Greater part of article presents the mathematical basics and architecture of event-driven combinational logic and example software implementation of the model. The paper shows the software implementation of AND and OR gate. After the introduction of basic gates of combinational logic the paper introduces the concept of the universal event-driven gate. The paper ends with software implementation of symmetrical event-driven XOR gate to create odd and even functions. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/SISY.2012.6339533

Impact assessment of chemical decontamination base-technology's preoxidation step on different steel surfaces

Horváthné Deák Emese Andrea Szabó Nagy Varga Kálmán Ható Zoltán Patek Gábor Kristóf Tamás Schunk János

Publication Name: Korrozios Figyelo

Publication Date: 2012-12-14

Volume: 52

Issue: 4

Page Range: 73-80

Description:

A novel efficient "soft" chemical decontamination technology has been developed - supported by the Paks Nuclear Power Plant - at the Institute of Radiochemistry and Radioecology of the University of Pannonia. The present work gives a brief overview on the corrosion and dissolution processes of austenitic stainless steel and carbon steel specimens that occur in the oxidative pretreatment step (mixture of 1.0 g·dm-3 HMnO4 + 0.2 mol·dm-3 HNO3, pH = 0.8-1.0) of the novel base-technology. The oxidative pretreatment of steel specimens was performed under laboratory conditions in an electrochemical cell, and the open circuit (corrosion) potential of treated surfaces was studied by a VoltaLab 40 (RADIOMETER) type electrochemical measuring system controlled by PC. In addition, the redoxi potential in the decontamination solution was measured on-line by Consort C861 type electrochemistry meter. In the course of the chemical procedure the concentration of the main alloying components (stainless steel: Fe, Cr, Ni, carbon steel: Fe) dissolved from the surface oxide layer into the decontamination solutions was determined by ICP-OES method. The morphology and chemical composition of the oxide layer formed on the surfaces of steel specimens were studied by scanning electron microscopy (SEM), equipped with an energy dispersive X-ray microanalyzer (EDX). The results of our laboratory experiments have revealed that the acidic dissolution of austenitic stainless steel surfaces by nitric acid is negligible (at room temperature), while that the carbon steel surface is significant and intensive. After addition of permanganic acid, a moderate dissolution of the protective oxide layer of the austenitic stainless steel surface was observed; however, the reaction is blocked by MnO2 formed on the steel surface. On the other hand, the dissolution rate of carbon steel surface is not increased following the addition of permanganic acid into nitric acid solution, and the formation of surface MnO2 is marginal.

Open Access: Yes

DOI: DOI not available

Improving the Strategic Level Performance Measurement in Warehousing Processes

János Botzheim Peter Foldesi Péter Németh

Publication Name: Smart Innovation Systems and Technologies

Publication Date: 2012-12-01

Volume: 16

Issue: Unknown

Page Range: 365-374

Description:

In our paper we propose a new method for the strategic level performance measurement at a warehouse in Hungary. The growing challenge of remaining successful in the warehousing forced the given warehouse to introduce and use a new tool for monitoring and forecasting strategic level indicators. Our proposed tool uses computational intelligence to establish connection between basic operational level data and important strategic level indicators. In this article we present the idea behind this tool and the process of programming and learning with company data. Finally, an evaluation is presented based on the results of the program run. © Springer-Verlag Berlin Heidelberg 2012.

Open Access: Yes

DOI: 10.1007/978-3-642-29920-9_37