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Found 6412 publications

Mediumship and its Cognitive 'Survival' in Identification of Collective Individuation the Hungarian Painter-Genius Csontváry's Mediumship and 'Survival' Part II. The Hypothesis of Hidden Meaning System of the Picture

Peter Varlaki Judit Ida Steiner-Varlaki Peter Baranyi

Publication Name: 10th IEEE International Conference on Cognitive Infocommunications Coginfocom 2019 Proceedings

Publication Date: 2019-10-01

Volume: Unknown

Issue: Unknown

Page Range: 561-566

Description:

The paper deals with the mediumship and the retro-cognitive and precognitive patterns in identification of collective individuation. We attend to show the relationships between the artistic visions (pictures) of Csontváry the Hungarian genius. We continue the discussion with the general hidden mystical theological system of the picture11This paper is dedicated to the blessed memory of Dr. Rezsö Pertorini and Dr. Anthony Storr. Thanks for the inspiration to Dr. Katalin Gellér.

Open Access: Yes

DOI: 10.1109/CogInfoCom47531.2019.9089981

Fast density reconstruction of Li-BES signal on the COMPASS tokamak

M. Berta J. Seidl P. Háček J. Krbec M. Hron R. Pánek

Publication Name: Review of Scientific Instruments

Publication Date: 2018-11-01

Volume: 89

Issue: 11

Page Range: Unknown

Description:

This article describes a fast and automatic reconstruction of the edge plasma electron density from the radiation of energetic Li atoms of the diagnostic beam on the COMPASS tokamak. Radiation is detected by using a CCD camera and by using an avalanche photo-diode system with a temporal resolution of 20 ms and 2 μs, respectively. Both systems are equipped with a 670.8 nm optical filter which corresponds to the lithium 1s22s1-1s22p1 transition. A theoretical model and a data processing procedure of a raw signal to obtain the density profile are described. The reconstruction algorithm provides the absolutely calibrated electron density profiles together with the measurement error estimated from relatively calibrated light profiles; the implementation is performed in Python. Time demanding operations of the code were optimized to provide reconstruction of a single profile within less than 10 ms which makes the code applicable for processing of a large amount of data. Thanks to this calculation speed, it is possible to reconstruct electron density profiles between two consecutive shots on the COMPASS tokamak with 2 μs time resolution.

Open Access: Yes

DOI: 10.1063/1.5049894

On the positivity of matrix-vector products

Zoltán Horváth

Publication Name: Linear Algebra and Its Applications

Publication Date: 2004-12-01

Volume: 393

Issue: 1-3

Page Range: 253-258

Description:

In this paper we examine the positivity of Rv where R∈R N×N, v∈RN, v≥0 with R=r(τA), r is a given (rational) function, A∈RN×N and τ∈(0,∞). Here we mean by positivity the ordering w.r.t. an arbitrary order cone, which includes the classical entrywise positivity of vectors. Since the requirement R≥0 leads to very severe restrictions on r and τ we construct a positive cone ℘=℘(A) and determine τ*=τ*(r,℘) such that r(τA)℘⊂℘ for all τ∈[0,τ*]. Finally we give an example arising from applications to partial differential equations where our results explain actual computations much better than the general theory on R≥0. © 2004 Elsevier Inc. All rights reserved.

Open Access: Yes

DOI: 10.1016/j.laa.2004.03.012

Driving circular financial performance and circular economic value added: Insights from institutional pressures and dynamic circular reconfiguration

Manlio Del Giudice Danish Mehraj Gian Luca Gregori Attila Kurucz Salwa Saleh Almasabi Sarthak Singh

Publication Name: Technology in Society

Publication Date: 2026-06-01

Volume: 86

Issue: Unknown

Page Range: Unknown

Description:

Moving towards a circular economy needs development of digital platforms and organizational capabilities for innovation, reconfiguration and capture for sustainable value. This study enquires the influence of institutional pressures (namely coercive, normative, and mimetic) on the circular performance of firms, resulting in better ecosystem innovation synergy as well as dynamic circular reconfiguration, circular value capture and circular financial performance. The goal of this study is to develop a theory-based model that links institutional theory, dynamic capabilities, and circular economy with circular economic value added. The data comprises 207 valid responses collected from companies in the logistics and supply chain sector. SmartPLS 4 is used to analyze data. The three institutional pressures have a significant impact on the circular economy capabilities. Coercive pressure and normative pressure influence ecosystem innovation synergy while mimetic pressure predicts dynamic circular reconfiguration. Moreover, dynamic circular reconfiguration is associated with measurable improvements in cost efficiency and revenue generation, thereby strengthening circular financial performance and circular economic value added. The study reveals that circular value capture has a significant impact on circular economic value added. The data indicates that ecosystem innovation synergy does not have a significant effect on circular value capture or circular financial performance. Ecosystem collaboration does not produce changes in firm economic performance unless it brings about internal reconfiguration. The findings suggest that both dynamic circular reconfiguration and circular performance became significant for circular economic value added in the context of circular finance. The routes of ecosystem innovation synergy and circular value capture, by their nature, are not sources of pressure. The findings enhance the understanding of how institutional pressures and potential capabilities enabled by digital platforms facilitate the transition to the circular economy. This paper finally provides theoretical and managerial insights for achieving sustainable value creation.

Open Access: Yes

DOI: 10.1016/j.techsoc.2026.103291

Study of the TP transformation via the inverted pendulum example

Miklós Kuczmann Andrea Weber

Publication Name: Acta Technica Jaurinensis

Publication Date: 2021-02-24

Volume: 14

Issue: 1

Page Range: 1-23

Description:

This study decribes the Tensor Product (TP) based model construction through the nonlinear dynamic system of the inverted pendulum. It presents the steps of TP modeling, various weighting functions and the Linear Matrix Inequality (LMI) based approach. LMI control has been used to stabilize the nonlinear system. This study shows the quasi-Linear Parameter-Varying (qLPV) state-space modeling and the Higher-Order Singular Value Decomposition (HOSVD) based TP model transformation. Some research in this issue already exists, but only the furuta, rotary, single and parallel-type double pendulum have been examined. In this paper the TP model transformation of the inverted pendulum is analyzed in terms of stability.

Open Access: Yes

DOI: 10.14513/actatechjaur.00562

Investigating the relationship between the theoretical layer thickness of the graphite lubricant film and the Kudo's friction number in the case of forged parts.

Tamás Ibriksz F. Tancsics

Publication Name: Iop Conference Series Materials Science and Engineering

Publication Date: 2018-10-18

Volume: 426

Issue: 1

Page Range: Unknown

Description:

In case of numerical analysis of forged parts, it is important to specify the friction coefficient characterizing the lubrication conditions. In our paper we present a combined method of a known SU (Simple Upsetting) deformation with EDS (Energy Dispersive Spectroscopy), which shows the relationship between the Kudo's friction number (this friction model is applicable for metalworking processes which produces high surface pressure) and the theoretical layer thickness of the graphite film covering the sink cavity. The tests were accomplished considering the solids content of non-synthetically produced lubricant concentrates diluted to varying degrees.

Open Access: Yes

DOI: 10.1088/1757-899X/426/1/012047

Propagation of Laser-Driven Electromagnetic Pulses in Laser Target Areas

Christos Kamperidis Luca Volpe Massimo De Marco Mate Liszi Istvan Drotar Kwinten Nelissen Giancarlo Gatti

Publication Name: EMC Europe 2019 2019 International Symposium on Electromagnetic Compatibility

Publication Date: 2019-09-01

Volume: Unknown

Issue: Unknown

Page Range: 802-806

Description:

During high intense laser target interaction a strong electromagnetic pulse (EMP) is generated which can potentially disturb the well performing of the experiment. The electromagnetic interference (EMI) due to the EMP not only affects devices present in the vacuum chamber but also in the target area where it may compromise the performance or operation of electronics and device controllers.In this work we report the measurements of EMP inside the laser target area at Centro de Laseres Pulsados (CLPU) during high intense laser-target interaction experiments. The experimental results show how the amplitude and spectrum of the EMP in the target area is different from the one inside the target chamber (TC). At last Finite element method (FEM) simulation results are shown and compared with experimental results.

Open Access: Yes

DOI: 10.1109/EMCEurope.2019.8871958

Stability properties of positive solutions to partial differential equations with delay

Gyula Farkas Peter L. Simo

Publication Name: Electronic Journal of Differential Equations

Publication Date: 2001-12-01

Volume: 2001

Issue: Unknown

Page Range: XCXXI-XCXXII

Description:

We investigate the stability of positive stationary solutions of semilinear initial-boundary value problems with delay and convex or concave nonlinearity. If the nonlinearity is monotone, then in the convex case /(O) < 0 implies instability and in the concave case /(O) > 0 implies stability. Special cases are shown where the monotonicity assumption can be weakened or omitted. ©2001 Southwest Texas State University.

Open Access: Yes

DOI: DOI not available

Examining Tertiary Education Amid the War in Ukraine: A Synthetic Control Approach

Marianna Kichurchak Olha Hrynkevych Halyna Mishchuk Yuriy Bilan Iryna Paslavska

Publication Name: European Journal of Interdisciplinary Studies

Publication Date: 2024-01-01

Volume: 16

Issue: 2

Page Range: 95-115

Description:

War consistently imposes significant challenges to the functioning and advancement of higher education. To identify the key trends in the development of tertiary education in Ukraine during 2014-2021 amid the war, the synthetic control method (SCM) was employed. The outcome variable for assessing tertiary education development is the gross enrolment ratio of the relevant age group. The broadest set of predictors influencing the dependent variable, for which statistical data is available on the World Bank website, consists of eighteen indicators. Through statistical and expert analysis, sixteen countries were selected for inclusion in the control group. The pre-war period was defined as 2000-2013, with 2014 marking the war’s onset, and 2015-2021 representing the war years. In the first stage, a synthetic model is constructed using the broadest possible dataset. In the second stage, the model’s sensitivity is analyzed, leading to the reduction of predictors to thirteen and the control group to ten countries. Consequently, the adequate synthetic model for the development of tertiary education in Ukraine from 2014 to 2021 was established. A placebo test confirmed that the observed gap between actual and synthetic values for tertiary education in Ukraine is not coincidental. The SCM analysis revealed that, without the war, a decline in demand in tertiary education would have been predicted for the 2014-2021 period. The observed gap underscores the significant impact of the war on Ukraine’s higher education system, providing valuable insights for shaping policy initiatives aimed at advancing tertiary education in the post-war era.

Open Access: Yes

DOI: 10.24818/ejis.2024.13