Giorgio Vassallo

Giorgio Vassallo
Università degli Studi di Palermo | UNIPA · Dipartimento dell'Innovazione Industriale e Digitale (DIID)

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122
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Publications (122)
Article
The aim of this research is the study of the transition between high and low electrical resistivity states of two overlapped graphene layers. These transitions have already been previously observed by the authors in experiments carried out with different conductors, separated by a tiny insulator layer, when subjected to short electromagnetic pulses...
Book
Unified Field Theory was an expression first used by Einstein in his attempt to unify general relativity with electromagnetism. Unified Field Theory and Occam's Razor attempts to provide real answers to foundational questions related to this unification and should be of high interest to innovative scientists. A diverse group of contributing authors...
Presentation
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One more 3-days Workshop, series ANV (Assisi Nel Vento), of Multidisciplinary Science (mainly: Energy, Medicine, Geology) was held in Assisi-Italy; part of the Workshop had even arguments related to Philosophy/History/Art/Religion. The reported event was the 8th edition (December 2021). One of the characteristics of such Workshop is that the time s...
Presentation
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The objective of this workshop was to explore compelling R&D opportunities in Low-Energy Nuclear Reactions (LENR), in support of developing metrics for a potential ARPA-E R&D program in LENR.
Conference Paper
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High speed electrical drives and machines represent a promising solution to cope with the increasing electrification in several fields, e.g. industrial electronics and mobility. According to that, power electronics is going more and more towards innovative technologies of semiconductor devices,such as Gallium-Nitride (GaN) and Silicon-Carbide (SiC)...
Presentation
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• Introduction. a) Sketch of reactor core: coiled constantan coil, with long and thin wire coated by Low Work Function (LWF) materials. Counter-electrode geometry . b) Hybrid glassy-Quartz/Alumina sheath, large surface area, LWF materials coated. c) Richardson equation and plot (i.e. electron emission at low pressures). d) Paschen plot (i.e. gas io...
Article
Medical imaging tasks, such as segmentation, 3D modeling, and registration of medical images, involve complex geometric problems, usually solved by standard linear algebra and matrix calculations. In the last few decades, conformal geometric algebra (CGA) has emerged as a new approach to geometric computing that offers a simple and efficient repres...
Presentation
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This is a presentation held at the Committee on Nuclear Research and Innovative Reactors of the “Order of Engineers of the Province of Rome” on February the 9th 2021. It summarizes the main findings in the field of “Cold Fusion” occurred in the last 31 years with a focus to the research conducted at INFN-LNF. With respect to previous similar presen...
Presentation
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This is a presentation held at the International LERN Workshop in memory of Dr. Mahadeva Srinivasan, Kanpur-India, on January 22-24, 2021. It is divided in two parts, the first describes a new experimental setup for enhancing LENR phenomena in Constantan wires and it is an extension of what presented already at the Workshop “Assisi Nel Vento 5” (AN...
Presentation
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[Enriched version of the original presentation] This short presentation introduces an experimental design for the enhancement of the anomalous thermal phenomena (AHE) observed since 2011 in Constantan3 wires exposed to a deuterium or hydrogen atmosphere, and heated by direct current. In fact, the occurrence of AHE requires specific conditions such...
Preprint
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A) General overview of INFN-LNF experiments using Constantan wires and motivations. Several of key points shown at ICCF22 (September 8-13, 2019, Assisi-Italy), [DOI: 10.13140/RG.2.2.26669.64485]. B) Experimental evidence of the role of the Deuterium gas flux and electrical excitations, by unbiased collection and analysis of (our) over 80 tests/expe...
Presentation
Full-text available
- Historical introduction with some key experiments, worldwide. - Some procedures to get AHE (INFN-LNF expertise). - Explanation of the role of the external FLUX of Hydrogen (and/or their isotopes) to induce “Anomalous Effects”, both thermal and/or nuclear, on specific materials (pure or alloys) properly loaded by Hydrogen itself, at the bulk or in...
Conference Paper
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This paper presents a low-cost Micro Controller Unit (MCU) implementation of an enhanced Field Oriented Control (FOC) technique that takes into account the non-linearity of the ferromagnetic material. The algorithm is applied to a three- phase 5.5 kW Induction Motor (IM) and experimentally carried out by means of an ATMEL ATSAM3X8E microcontroller....
Conference Paper
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The aim of this paper is the low-cost experimental implementation of a field oriented control strategy for a Permanent Magnet Synchronous Motor (PMSM) by using an Atmel SAM3X8E microcontroller, mounted on an Arduino DUE board. In this electrical drive for PMSM, a resolver is used in order to measure the rotor position and speed: therefore, the low-...
Article
Full-text available
This paper presents a summary and some deeper details about the experiments presented at the 22nd International Conference on Condensed Matter Nuclear Science (ICCF22). It reports on the experimental study of LENR phenomena in Constantan (Cu55 Ni44 Mn1) from its inception in 2011 to the most recent experiments. Using an empirical approach we identi...
Chapter
The work presented here illustrates an humanoid robot capable of interacting with an human user within the Cultural Heritage domain. Two different and complementary AI approaches, namely sub-symbolic and symbolic, have been implemented and combined together to design the framework of a robot having both rational and intuitive capabilities. Furtherm...
Article
Full-text available
Anomalous Heat Effects (AHE) have been observed in wires of Cu55Ni44Mn1 (Constantan) exposed to H2 and D2 in multiple experiments during the last eight years. Improvements in the magnitude and reproducibility of AHE, and improvements in wire preparation and reactor design were reported by the authors in the present and previous papers. The oxidatio...
Presentation
Full-text available
Our group has been studying LENR phenomena in Constantan (Cu55 Ni44 Mn1) since 2011. In fact, this alloy captured our attention since it promotes efficiently the dissociation of molecular Deuterium (D2) or Hydrogen (H2) to the atomic state, followed by a remarkable absorption capability. Under certain conditions, this absorption is associated with...
Conference Paper
Full-text available
In the last years a widespread development in the market of electrical drives employing high-speed electrical machines has occurred in various industrial fields, due to the extremely high power density that can be reached. Nevertheless, to maintain output power quality without using bulky filtering networks, DC-AC converters should be controlled by...
Article
Full-text available
In 2011, we introduced the use of constantan alloy in LENR, in the form of long and thin wires as a hydrogen dissociation promoter. We disclosed for the first time the reason for the choice of such material at IWAHLM-12 Workshop (2017), hypothesizing it was the initiator of the reaction in Andrea Rossi's experiment. We developed a specific treatmen...
Article
Full-text available
In this paper, a simple Zitterbewegung electron model, proposed in a previous work, is presented from a different perspective based on the principle of mass−frequency equivalence. A geometric−electromagnetic interpretation of mass, relativistic mass, De Broglie wavelength, Proca, Klein−Gordon, Dirac and Aharonov−Bohm equations in agreement with the...
Book
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We introduce and use the space-time Clifford algebra, showing that only one fundamental physical entity is sufficient to describe the origin of electromagnetic fields, charges and currents: the electromagnetic four-potential. This simplified electromagnetic model turns out to be an improved understanding of electromagnetism. The obtained electromag...
Preprint
Full-text available
In this paper, a simple Zitterbewegung electron model, proposed in a previous work, is presented from a different perspective based on the principle of mass-frequency equivalence. A geometric-electromagnetic interpretation of mass, relativistic mass, De Broglie wavelength, Proca, Klein-Gordon, Dirac and Aharonov-Bohm equations in agreement with the...
Presentation
Full-text available
Anomalous Heat Effects (AHE) have been observed in wires of Cu55Ni44Mn1 (Constantan) exposed to H2 and D2 in multiple experiments along the last 8 years. Improvements in the magnitude and reproducibility of AHE were reported by the Authors of the present work in the past and related to wire preparation and reactor design. In facts, an oxidation of...
Technical Report
Full-text available
In the frame of LENR field, we introduced in 2011 the use of Constantan alloy (in the form of long and thin wires) as a Hydrogen dissociation promoter. We have disclosed for the first time the reason for the choice of such material at IWAHLM-12 Workshop, hypothesizing it was the initiator of the reaction in Andrea Rossi’s experiment. We developed a...
Conference Paper
Full-text available
Anomalous Heat Effects (AHE) have been observed in thin and long wires of Cu 55 Ni 44 Mn 1 (Constantan) exposed to H 2 and D 2 in multiple experiments along the last 8 years. Improvements in the magnitude and reproducibility of AHE were reported by the Authors of the present work in the past, and related to wire preparation and reactor design. In f...
Presentation
Full-text available
Will be shown main steps aimed to identify the key parameters needed to get AHE (Anomalous Heat Effects) at high temperatures (>300°C) during the absorption/storage and flux of Deuterium gas in a specific alloy ( Constantan: Cu55_Ni44_Mn1), thin and long wire shaped, with surface at sub-micrometric dimensionality. Constantan is also coated by Low...
Article
Full-text available
In this paper a straightforward application of Occam's razor principle to Maxwell's equation shows that only one entity, the electromagnetic four-potential, is at the origin of a plurality of concepts and entities in physics. The application of the so called "Lorenz gauge" in Maxwell's equations denies the status of real physical entity to a scalar...
Article
Full-text available
This paper introduces a Zitterbewegung (ZBW) model of the electron by applying the principle of Occam's razor to Maxwell's equations and by introducing a scalar component in the electromagnetic field. The aim is to explain, by using simple and intuitive concepts, the origin of the electric charge and the electromagnetic nature of mass and inertia....
Article
Full-text available
This paper introduces a Zitterbewegung model of the electron by applying the principle of Occam's razor to the Maxwell's equations and by introducing a scalar component in the electromagnetic field. The aim is to explain, by using simple and intuitive concepts, the origin of the electric charge and the electromagnetic nature of mass and inertia. Th...
Article
Full-text available
Because of the high numeric complexity of Geometric Algebra, its use in engineering applications relies heavily on tools and devices for efficient implementations. In this article, we present a novel hardware design for a Geometric Algebra coprocessor, called GAPPCO, which is based on Geometric Algebra Parallelism Programs (GAPP). GAPPCO is a desig...
Presentation
Full-text available
An unconventional research program has been initiated in 2011 aiming to increase both the magnitude and reproducibility of Anomalous Heat Effects (AHE) in the field of Low Energy Nuclear Reactions (LENR). The program focused on the study of Constantan, an alloy of Nickel and Copper (Cu55Ni44Mn1), instead of metals such as Pd, Ti, Ni that have been...
Article
Full-text available
Clifford algebra or geometric algebra (GA) is a simple and intuitive way to model geometric objects and their transformations. Operating in high-dimensional vector spaces with significant computational costs, the practical use of GA requires dedicated software and/or hardware architectures to directly support Clifford data types and operators. In t...
Conference Paper
Full-text available
] Since 2011, at INFN-LNF, we investigated the behavior of Constantan (Cst) alloy (Cu 55 Ni 44 Mn 1 ; ISOTAN44) as concerns Hydrogen and/or Deuterium (H 2 /D 2) absorption and generation of Anomalous Heat Excess (AHE) at High Temperatures (HT, i.e.>>200 °C). To further improve the intrinsic, excellent, catalytic proprieties of Cst toward H 2 2H di...
Conference Paper
We propose and experimentally assess Semantic Word Error Rate (SWER), an innovative similarity measure for sentence plagiarism detection. SWER introduces a complex approach based on latent semantic analysis, which is capable of outperforming the accuracy of competitor methods in plagiarism detection. We provide principles and functionalities of SWE...
Conference Paper
Clifford Algebra (CA) is a powerful mathematical language that allows for a simple and intuitive representation of geometric objects and their transformations. It has important applications in many research fields, such as computer graphics, robotics, and machine vision. Direct hardware support of Clifford data types and operators is needed to acce...
Conference Paper
Clifford Algebra or Geometric Algebra (GA) is a simple and intuitive way to model geometric objects and their transformations. Operating in high-dimensional vector spaces with significant computational costs, the practical use of GA requires, however, dedicated software and/or hardware architectures to directly support Clifford data types and opera...
Conference Paper
Full-text available
Since 2011, we introduced into the LENR Research field, the use of a Constantan alloy to absorb and adsorb proper amounts of H2 or D2 (concentrated and/or mixed with noble gases of low thermal conductivity) and to generate thermal anomalies even at low temperatures (>200°C wire temperature). Based on this idea, we developed a reactor with a core of...
Article
Medical imaging involves important computational geometric problems, such as image segmentation and analysis, shape approximation, three-dimensional (3D) modeling, and registration of volumetric data. In the last few years, Conformal Geometric Algebra (CGA), based on five-dimensional (5D) Clifford Algebra, is emerging as a new paradigm that offers...
Article
Word prediction generally relies on n-grams occurrence statistics, which may have huge data storage requirements and does not take into account the general meaning of the text. We propose an alternative methodology, based on Latent Semantic Analysis, to address these issues. An asymmetric Word-Word frequency matrix is employed to achieve higher sca...
Article
Full-text available
The aim of this work is to present a new point of view that makes it possible to give a statistical interpretation of the traditional Latent Semantic Analysis (LSA) paradigm based on the Truncated Singular Value Decomposition (TSVD) technique. We show how the TSVD can be interpreted as a statistical estimator derived from the LSA co-occurrence rela...
Chapter
Word space models are used to encode the semantics of natural language elements by means of high dimensional vectors [23]. Latent Semantic Analysis (LSA) methodology [15] is well known and widely used for its generalization properties. Despite of its good performance in several applications, the model induced by LSA ignores dynamic changes in sente...
Article
Geometric or Clifford algebra (CA) is a powerful mathematical tool that offers a natural and intuitive way to model geometric facts in a number of research fields, such as robotics, machine vision and computer graphics. Operating in higher-dimensional spaces, its practical use is hindered, however, by a significant computational cost, only partiall...
Conference Paper
Edge detection of color images is usually performed by applying the traditional techniques for gray-scale images to the three color channels separately. However, human visual perception does not differentiate colors and processes the image as a whole. Recently, new methods have been proposed that treat RGB color triples as vectors and color images...
Article
Full-text available
In this paper we illustrate a humanoid robot able to interact socially and naturally with a human by expressing human-like body emotions. The emotional architecture of this robot is based on an emotional conceptual space generated using the paradigm of Latent Semantic Analysis. The robot generates its overall affective behavior (Latent Semantic Beh...
Article
Full-text available
the improvements on Constantan-related experiments, started in 2011, in order to study the feasibility of new Nickel based alloys that are able to absorb proper amounts of Hydrogen (H2) and/or Deuterium (D2) and that have, in principle, some possibility to generate anomalous thermal effects at temperatures >100°C. The interest in Ni comes in part b...
Article
Full-text available
Natural language sentences can be represented as vectors in a high dimensional vector space. Generally, these models are based on bag of words approaches, and therefore they do not fully capture the semantics of sentences which depends both by the semantics of the words, and their order in in the phrase. In this work we propose a sub-symbolic metho...
Conference Paper
Geometric or Clifford Algebra (CA) is a powerful mathematical tool that is attracting a growing attention in many research fields such as computer graphics, computer vision, robotics and medical imaging for its natural and intuitive way to represent geometric objects and their transformations. This paper introduces the architecture of CliffordCoreD...
Article
Full-text available
LENR (Low Energy Nuclear Reactions) Questo è l’acronimo sotto cui sono ormai noti una pletora di fenomeni sperimentali gemmati dalla prime ricerche sulla cosiddetta “fusione fredda” di Fleischmann e Pons del 1989. Si tratta di fenomeni fisici ancora poco conosciuti che promettono di essere una nuova fonte di energia nucleare virtualmente inesauri...