scholarly journals Phase Composition and Its Spatial Distribution in Antique Copper Coins: Neutron Tomography and Diffraction Studies

2021 ◽  
Vol 7 (8) ◽  
pp. 129
Author(s):  
Bulat Bakirov ◽  
Irina Saprykina ◽  
Sergey Kichanov ◽  
Roman Mimokhod ◽  
Nikolay Sudarev ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Point Of View ◽  
Neutron Tomography ◽  
Ancient Greek ◽  
Elementary Composition ◽  
Bronze Alloy ◽  
3D Data ◽  
Tomography Method ◽  
Internal Arrangement ◽  
Tin Content

The chemical and elementary composition, internal arrangement, and spatial distribution of the components of ancient Greek copper coins were studied using XRF analysis, neutron diffraction and neutron tomography methods. The studied coins are interesting from a historical and cultural point of view, as they are “Charon’s obol’s”. These coins were discovered at the location of an ancient Greek settlement during archaeological excavations on the “Volna-1” necropolis in Krasnodar Region, Russian Federation. It was determined that the coins are mainly made of a bronze alloy, a tin content that falls in the range of 1.1(2)–7.9(3) wt.%. All coins are highly degraded; corrosion and patina areas occupy volumes from ~27 % to ~62 % of the original coin volumes. The neutron tomography method not only provided 3D data of the spatial distribution of the bronze alloy and the patina with corrosion contamination inside coin volumes, but also restored the minting pattern of several studied coins. Taking into account the obtained results, the origin and use of these coins in the light of historical and economic processes of the Bosporan Kingdom are discussed.

FORGOTTEN UNITY OF BODY AND SOUL AND THE NEED FOR A NEW PHILOSOPHY OF SPORT

2018 ◽  
Vol 28 (7) ◽  
pp. 2523-2529
Author(s):  
Slobodan Marković ◽  
Zoran Momčilović ◽  
Vladimir Momčilović
Keyword(s):  
Ancient Greece ◽  
Point Of View ◽  
Greek Philosophy ◽  
Ancient Greek ◽  
Constructive Dialogue ◽  
Ancient Greek Philosophy ◽  
Philosophy Of Sport ◽  
Body And Soul ◽  
The Relationship ◽  
Present Text

This text is an attempt to see sport in different ways in the light of ancient philosophical themes. Philosophy of sports gets less attention than other areas of the discipline that examine the other major components of contemporary society: philosophy of religion, political philosophy, aesthetics, and philosophy of science. Talking about sports is often cheap, but it does not have to be that way. One of the reasons for this is insufficiently paid attention to the relation between sport and philosophy in Greek. That is it's important to talk about sports, just as important as we are talking about religion, politics, art and science. The argument of the present text is that we can try to get a handle philosophically on sports by examining it in light of several key idea from ancient Greek philosophy. The ancient Greeks, tended to be hylomorphists who gloried in both physical and mental achievement. Тhe key concepts from Greek philosophy that will provide the support to the present text are the following: arete, sophrosyne, dynamis and kalokagathia. These ideals never were parts of a realized utopia in the ancient world, but rather provided a horizon of meaning. We will claim that these ideals still provide worthy standards that can facilitate in us a better understanding of what sports is and what it could be. How can a constructive dialogue be developed which would discuss differences in understanding of sport in Ancient Greece and today? In this paper, the authors will try to answer this question from a historical and philosophical point of view. The paper is divided into three sections. The first section of the paper presents two principally different forms or models of focus in sport competitions – focus on physical excellence or focus on game. The dialectic discourse regarding these two approaches to physical activity is even more interesting due to the fact that these two models take precedence over one another depending on context. In the second section of the paper, the focus shifts to theendemic phenomenon of the Ancient Greek Olympic Games, where the topic is discussed from the perspective of philosophy with frequent historical reflections on the necessary specifics, which observeman as a physical-psychological-social-spiritual being. In the third section of this paper, the authors choose to use the thoughts and sayings of the great philosopher Plato to indicate how much this philosopher wasactually interested in the relationship between soul and body, mostly through physical exercise and sport, because it seems that philosophers who came after him have not seriously dealt with this topic in Plato’s way, although they could.

scholarly journals Trailing back from quasi decentralisation to centralisation. Municipal reform in Hungary

2020 ◽  
Vol 14 ◽  
pp. 117-137
Author(s):  
László Kákai
Keyword(s):  
Spatial Distribution ◽  
Public Administration ◽  
Service Provision ◽  
Point Of View ◽  
Direct Impact ◽  
Municipal Reform ◽  
Distribution Of Power ◽  
State Organization ◽  
Centralization And Decentralization

Trailing back from quasi decentralisation to centralisation. Municipal reform in Hungary It is very difficult to group countries and state structures according to the extent of their decentralization or the model they follow in the spatial distribution of power. The bounds of responsibility of local government and the state, the distribution of the roles and tasks between the two stakeholders and the question of centralization and decentralization are issues regularly debated in recent years and today. This topic is not merely a public administration, financial or state organization issue since these decisions have a direct impact on citizens’ lives through public services. In my study I wish to introduce this process via Hungary’s example. I also examine how and what those concerned by the financial and political changes, i.e. the population perceived of this most important structural transformation of the period since the transition in 1989. Can it be verified from the consumers’ point of view that the transformation of the local municipal system improves the quality of service provision?

scholarly journals How spatial heterogeneity shapes multiscale biochemical reaction network dynamics

2015 ◽  
Vol 12 (104) ◽  
pp. 20141106 ◽  
Author(s):  
Peter Pfaffelhuber ◽  
Lea Popovic
Keyword(s):  
Spatial Distribution ◽  
Spatial Heterogeneity ◽  
Reaction Network ◽  
Stochastic Averaging ◽  
Multiscale Model ◽  
Point Of View ◽  
Rigorous Results ◽  
Biochemical Reaction Network ◽  
Molecular Movement ◽  
Heterogeneous Multiscale

Spatial heterogeneity in cells can be modelled using distinct compartments connected by molecular movement between them. In addition to movement, changes in the amount of molecules are due to biochemical reactions within compartments, often such that some molecular types fluctuate on a slower timescale than others. It is natural to ask the following questions: how sensitive is the dynamics of molecular types to their own spatial distribution, and how sensitive are they to the distribution of others? What conditions lead to effective homogeneity in biochemical dynamics despite heterogeneity in molecular distribution? What kind of spatial distribution is optimal from the point of view of some downstream product? Within a spatially heterogeneous multiscale model, we consider two notions of dynamical homogeneity (full homogeneity and homogeneity for the fast subsystem), and consider their implications under different timescales for the motility of molecules between compartments. We derive rigorous results for their dynamics and long-term behaviour, and illustrate them with examples of a shared pathway, Michaelis–Menten enzymatic kinetics and autoregulating feedbacks. Using stochastic averaging of fast fluctuations to their quasi-steady-state distribution, we obtain simple analytic results that significantly reduce the complexity and expedite simulation of stochastic compartment models of chemical reactions.

Modeling of spatial distribution of passenger traffi c on interurban bus routes

Innotrans ◽  
2020 ◽  
pp. 31-36
Author(s):  
Alexander V. Martynenko ◽  
◽  
Alexander A. Shevtsov ◽  
Keyword(s):  
Spatial Distribution ◽  
Quantitative Description ◽  
Point Of View ◽  
Practical Point ◽  
Ticket Price ◽  
Passenger Traffic ◽  
Correlation And Regression Analysis ◽  
Classical Gravity ◽  
Bus Service

This paper is devoted to the quantitative description of the spatial distribution of passenger traffic based on the classical gravity model on the example of interurban bus service between Yekaterinburg and other cities of the Sverdlovsk region. The influence of factors such as population, distance between localities, and ticket price on the volume of passenger traffic was studied. As a result of the correlation and regression analysis, it was found that both the distance between localities and the ticket price can be used as a measure of the remoteness of localities. However, the quality of the resulting regression model does not change. The spatial distribution of interurban bus passenger traffic depends on the measure of distance of localities from each other and the size of their population. Moreover, the size of the population is a much more significant factor than the measure of distance. From a practical point of view, this means that when predicting passenger traffic, demographic factors must first be taken into account.

The Periodic System

2019 ◽  
Author(s):  
Eric Scerri
Keyword(s):  
Middle Ages ◽  
Point Of View ◽  
Platonic Solid ◽  
Ancient Greek ◽  
Platonic Solids ◽  
System P ◽  
Chemical Inertness ◽  
Dimensional Shape ◽  
The Many

In ancient Greek times, philosophers recognized just four elements—earth, water, air, and fire—all of which survive in the astrological classification of the 12 signs of the zodiac. At least some of these philosophers believed that these different elements consisted of microscopic components with differing shapes and that this explained the various properties of the elements. These shapes or structures were believed to be in the form of Platonic solids (figure 1.1) made up entirely of the same two-dimensional shape. The Greeks believed that earth consisted of microscopic cubic particles, which explained why it was difficult to move earth. Meanwhile, the liquidity of water was explained by an appeal to the smoother shape possessed by the icosahedron, while fire was said to be painful to the touch because it consisted of the sharp particles in the form of tetrahedra. Air was thought to consist of octahedra since that was the only remaining Platonic solid. A little later, a fifth Platonic solid, the dodecahedron, was discovered, and this led to the proposal that there might be a fifth element or “quintessence,” which also became known as ether. Although the notion that elements are made up of Platonic solids is regarded as incorrect from a modern point of view, it is the origin of the very fruitful notion that macroscopic properties of substances are governed by the structures of the microscopic components of which they are comprised. These “elements” survived well into the Middle Ages and beyond, augmented with a few others discovered by the alchemists, the precursors of modern-day chemists. One of the many goals of the alchemists seems to have been the transmutation of elements. Not surprisingly, perhaps, the particular transmutation that most enticed them was the attempt to change the base metal lead into the noble metal gold, whose unusual color, rarity, and chemical inertness have made it one of the most treasured substances since the dawn of civilization.

Assisting Pottery Restoration Procedures with Digital Technologies

2019 ◽  
Vol 3 (1) ◽  
pp. 20-32 ◽  
Author(s):  
Ioannis Kalasarinis ◽  
Anestis Koutsoudis
Keyword(s):  
Data Analysis ◽  
Open Source Software ◽  
Shape Matching ◽  
Low Cost ◽  
Digital Technologies ◽  
Hellenistic Period ◽  
Ancient Greek ◽  
3D Data ◽  
Wide Range ◽  
3D Digitisation

The fragmentary nature of pottery is considered a common place. Conservators are requested to apply a proper restoration solution by taking under consideration a wide range of morphological features and physicochemical properties that derive from the artefact itself. In this work, the authors discuss on a low-cost pottery-oriented restoration pipeline that is based on the exploitation of technologies such as 3D digitisation, data analysis, processing and printing. The pipeline uses low-cost commercial and open source software tools and on the authors' previously published 3D pose normalisation algorithm that was initially designed for 3D vessel shape matching. The authors objectively evaluate the pipeline by applying it on two ancient Greek vessels of the Hellenistic period. The authors describe in detail the involved procedures such as the photogrammetric 3D digitisation, the 3D data analysis and processing, the 3D printing procedures and the synthetic shreds post processing. They quantify the pipeline's applicability and efficiency in terms of cost, knowledge overhead and other aspects related to restoration tasks.

Effect of scanning speed and tin content on the tribological behavior of femtosecond laser textured tin-bronze alloy

2018 ◽  
Vol 108 ◽  
pp. 17-25 ◽  
Author(s):  
A. Bharatish ◽  
V. Harish ◽  
Ravi N. Bathe ◽  
J. Senthilselvan ◽  
S. Soundarapandian
Keyword(s):  
Femtosecond Laser ◽  
Tribological Behavior ◽  
Scanning Speed ◽  
Bronze Alloy ◽  
Tin Bronze ◽  
Tin Content

scholarly journals Production of highly ionized plasma by micro-dot array irradiation and its application to compact X-ray lasers

2002 ◽  
Vol 20 (1) ◽  
pp. 73-77 ◽  
Author(s):  
NAOHIRO YAMAGUCHI ◽  
CHIEMI FUJIKAWA ◽  
KAZUNOBU OKASAKA ◽  
TAMIO HARA
Keyword(s):  
Spatial Distribution ◽  
Spatial Structure ◽  
Pulse Train ◽  
Production Method ◽  
Point Of View ◽  
Rapid Expansion ◽  
Laser Generation ◽  
Plasma Production ◽  
X Ray ◽  
Laser Gain

A plasma production method using the irradiation of an array of small spots has been investigated from the point of view of soft X-ray laser generation in the recombining plasma scheme pumped by a pulse-train laser. The expansion geometry of highly ionized ions produced by the micro-dot array irradiation method has been measured and compared with that by a simple line irradiation. Spatial distribution of gain coefficients of the Li-like Al ion transition lines have also been measured for both irradiation methods. Highly ionized ions were observed to spread wider in the micro-dot array irradiation method. It is expected that rapid expansion and efficient cooling are achieved in plasmas produced by the micro-dot array irradiation method, which is consistent with the experimental results on the spatial structure of the X-ray laser gain region.

Identification of spatial magnetic inhomogeneities by nuclear forward scattering of synchrotron radiation

2019 ◽  
Vol 26 (4) ◽  
pp. 1310-1315
Author(s):  
Vlastimil Vrba ◽  
Vít Procházka ◽  
Marcel Miglierini
Keyword(s):  
Spatial Distribution ◽  
Magnetic Moments ◽  
Theoretical Description ◽  
Forward Scattering ◽  
Point Of View ◽  
Experimental Point ◽  
Nuclear Forward Scattering ◽  
Magnetic Inhomogeneities ◽  
Geometric Arrangements ◽  
Scattering Time

Spatially confined magnetic inhomogeneities were revealed by measuring nuclear forward scattering time spectra on the same sample in two different geometric arrangements. They differ by 180° rotation of the sample around one of the polarization axes. A basic theoretical description of this phenomenon and its relation to a spatial distribution of nuclei featuring different magnetic moments is provided. From an experimental point of view, the violation of rotational invariance was observed for an inhomogeneous Fe81Mo8Cu1B10 metallic glass. The development of magnetic inhomogeneities and their relation to the evolution of time spectra was studied during thermal annealing.

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