The Origins of Formation of Descriptive Geometry

2021 ◽  
pp. 3-11
Author(s):  
N. Sal'kov

The translation "Descriptive geometry" is not entirely accurate. In fact, the phrase should be translated as "Narrative geometry". Based on this translation, it can be confidently stated that the science under consideration serves not only as a theoretical basis for orthogonal projections, a special case of which are ordinary drawings, but also for any images – in this the author of the article fully agrees with such authorities as N.A. Rynin, N.F. Chetverukhin, V.O. Gordon, S.A. Frolov, N.A. Sobolev and many others. The paper considers the origins of one of the directions of geometry – descriptive geometry. The hypothesis is put forward that in reality descriptive geometry, or rather, its elements, was originally involved in ancient times, during the primitive communal system when making drawings on the walls of caves and rocks. Orthogonal projections were used in the ancient world and in the Middle Ages, and Gaspard Monge at the end of the XVIII century systematized all the existing disconnected developments on descriptive geometry, adding his own research. Most likely, geometry in general was the very first science that originated when our ancestors who lived in caves faced the problem of increasing the living area due to population growth. And descriptive geometry began to develop from the moment when the first artist depicted scenes from life on the cave wall: hunting, fishing, tribal wars, events that shocked people, etc. Ancient artists existed on all continents of the globe, except perhaps Antarctica, since rock carvings were found on all other continents. And the earliest was performed somewhere 25-30 thousand years ago. Thus, the hypothesis that the elements of descriptive geometry originated in the primitive communal system can be considered proven.

2018 ◽  
Vol 17 (7) ◽  
pp. 99-106
Author(s):  
Yu. S. Khudyakov ◽  
A. Yu. Borisenko

Purpose. We considered and analyzed the finds of iron arrowheads from a small collection of armament objects for long-range combat related to the epoch of Kyrgyz Great Power. The collection is exhibited at the moment in the National Museum of the Kyrgyz Republic in Bishkek City. Results. Precise location of these objects is not determined. However, it is known that all these objects of armament originate from the territory of modern Kyrgyzstan. The arrowheads from the collection have been preserved quite well, which distinguishes these findings from the armament objects of excavations of archaeological monuments of the cultures of ancient and medieval peoples in the Tian Shan. Having carried out a formal and typological classification analysis of the items from the collection, we determined a certain typological identity of the armament for longrange combat that were related to different groups and types of iron petiolate arrowheads according to the section and the form of feather. We found analogues to the arrows from our collection when discovered arrowheads of similar forms as a part of weapon complexes of ancient and medieval ethnicities inhabiting the Central Asian historical and cultural region during the Ancient times, Early and High Middle Ages. We traced the spread of arrowheads of different types, analyzed them as a part of our collection, and analyzed the items discovered in the course of previous research in medieval archaeological sites on the territory of northern Tian Chan Region in the bounds of Kyrgyzstan. The results of our analysis prove that all the arrowheads from the collection studied relate to the historical eras of the Early and High Middle Ages. Conclusion. A part of this collection is likely to have belonged to the complex of means for long-range combat. They used such arrowheads while shooting the enemy in the epoch of the Kyrgyz Khanate. Preponderance of armorpiercing and versatile iron arrowheads can testify the necessity to confront enemies in long-range combats and fight against adversaries who were powerfully armed and fully-equipped with metallic armor.


Author(s):  
Per F.V. Hasle ◽  
Christensen Anne-Kathrine Kjær

Persuasive design (PD) is concerned with the use of computing technology for persuasive purposes. It thereby captures a comprehensive and important trend in CMC, human-computer interaction, and software development in general. This chapter describes the basic concepts of PD as well as its development from its inception in the late 90s until now. So far, rhetoric has played a modest role in the field. However, it is shown that rhetoric offers a major step forward in consolidating PD as a discipline. The concepts of PD in many respects have a theoretical basis in and are better understood with reference to rhetoric; a number of practical guidelines for PD can and should be developed on the basis of rhetoric; and ‘epistemic rhetoric’ offers a sound epistemology for PD, which is at the moment lacking. Arguably, a rhetorical turn is required for coming to grips with the problem of defining PD and placing it properly as a special case of CMC, namely computer mediated persuasion.


2019 ◽  
Vol 18 (2) ◽  
pp. 24-37
Author(s):  
D.X. Sangirova ◽  

Revered since ancient times, the concept of "sacred place" in the middle ages rose to a new level. The article analyzes one of the important issues of this time - Hajj (pilgriamge associated with visiting Mecca and its surroundings at a certain time), which is one of pillars of Islam and history of rulers who went on pilgrimage


2007 ◽  
Vol 12 (3) ◽  
pp. 285-312 ◽  
Author(s):  
Joseph Ziegler

AbstractThe article surveys and contextualizes the main arguments among philosophers and academic physicians surrounding the status of physiognomy as a valid science from the thirteenth to the early sixteenth centuries. It suggests that despite constant doubts, learned Latin physiognomy in the later Middle Ages was recognized by natural philosophers (William of Spain, Jean Buridan, William of Mirica) and academic physicians (Rolandus Scriptor, Michele Savonarola, Bartolomeo della Rocca [Cocles]) as a body of knowledge rooted in a sound theoretical basis. Physiognomy was characterized by stability and certainty. As a demonstrative science it was expected to provide rational explanation for every bodily sign. In this respect, learned physiognomy in the Middle Ages was dramatically different from its classical sources, from Islamic and possibly from early-modern physiognomy as well.


2021 ◽  
Vol 3 (4) ◽  
pp. 244-252
Author(s):  
Brahim BOUKHALFA

The yearning for a journey towards the places of strangers, the longing to mingle with them and immerse themselves in their lives, and to record everything that is strange and wondrous about their lifestyle, their ways of thinking, their customs and traditions, that is the nature that characterizes man, since ancient times. The lives of the prophets, may blessings and peace be upon them, were frenetic migrations, and a constant movement, length and breadth, in search of a place of intimacy, a comfortable life, and a bright truth. Western poets, writers, philosophers and travelers have also been fond of the journey to the Naked and Islamic East, from the Middle Ages to the present day; The desire to get to know the Easterners closely, to mix with them, and then to dominate them, was evident in the so-called travel literature. It is the writing emanating from the experiences of travelers in the eastern "One Thousand and One Nights". However, these travelers have always hidden the true intentions that drove them on the journey, which, as we will present in the body of this study, are colonial motives deposited in the political consciousness of Western governments that stand behind the colonial phenomenon. It is from this perspective in the research that urgent questions come to the surface, which we are trying to answer. What are the real motives for the trip for Western writers in the nineteenth and twentieth centuries? What is their relationship with the Western governments that were colonizing large areas of the Arab countries? What are the representations of Arabs and Muslims in so-called travel literature? The answer to these questions is to reveal to us the colonial nature of the modern West, and the extent of its contempt for non-Westerners, which is supported by myths of racial superiority and self-centeredness in that. It is a belief that has not been affected by the tremendous development in the field of human sciences that our time has witnesse


1897 ◽  
Vol 29 (3) ◽  
pp. 485-549
Author(s):  
M. Gaster

More marvellous and more remarkable than the real conquests of Alexander are the stories circulated about him, and the legends which have clustered round his name and his exploits. The history of Alexander has, from a very early period, been embellished with legends and tales. They spread from nation to nation during the whole of the ancient times, and all through the Middle Ages. Many scholars have followed up the course of this dissemination of the fabulous history of Alexander. It would, therefore, be idle repetition of work admirably done by men like Zacher, Wesselofsky, Budge, and others, should I attempt it here. All interested in the legend of Alexander are familiar with those works, where also the fullest bibliographical information is to be found. I am concerned here with what may have appeared to some of these students as the bye-paths of the legend, and which, to my mind, has not received that attention which is due to it, from more than one point of view. Hitherto the histories of Alexander were divided into two categories; the first were those writings which pretended to give a true historical description of his life and adventures, to the exclusion of fabulous matter; the other included all those fabulous histories in which the true elements were smothered under a great mass of legendary matter, the chief representative of this class being the work ascribed to a certain Callisthenes. The study of the legend centred in the study of the vicissitudes to which this work of (Pseudo-) Callisthenes had been exposed, in the course of its dissemination from the East, probably from its native country, Egypt, to the countries of the West.


2012 ◽  
Vol 586 ◽  
pp. 259-264 ◽  
Author(s):  
Mikhail Sverdlik ◽  
Alexander Pesin ◽  
D.O. Pustovoytov

The article focuses at technology development of the vertical asymmetric rolling and combined process of vertical asymmetric rolling and plastic bending. It has been shown that vertical asymmetric rolling peculiarity relates to the presence of a mixed zone, in which friction forces on contact roll surfaces are directed are differently. Experimental research showed serious drawbacks in the rolling technology caused by the growth of dynamic loads arising at the moment of plate contact with the bending roller. For solving the problem it was proposed to make the roller position motile to allow its movement along the required trajectory. The application of the motile roller helps to reduce dangerous torque differentiation at working rolls by the value of 1,5-2,5 compared with the rigidly fixed roller. The most effective bending roller trajectory is a second-order curve that is convex parabola.


2021 ◽  
pp. 7
Author(s):  
Vasily I. Zhukov

The author analyzes the process of accumulation of knowledge in the field of philosophy and law in order to create an epistemological basis for the perception of justice in the paradigm of the Philosophy of Law. The analytical review is based on the analysis of philosophical, theological, historical and other theories developed from ancient times to the present. The author focuses on the works of ancient thinkers (first of all, Plato, his disciple Aristotle, their followers, Roman authors), the works of scientists who created original concepts and enriched jurisprudence in the Middle Ages, the new and the newest times. Special attention is paid to the interpretation of theories that brought science closer to the creation of a theory of justice in the context of the Philosophy of Law. The author also describes the theories of justice of law developed by the largest scientists of the XX century, J.ºRawls, H. Otfried, F. von Hayek, Ph. Selznick, etc. The article considers the contribution to the development of knowledge about justice in the paradigm of the Philosophy of Law made by the local legal scholars, Soviet scientists, the largest modern specialists in this field, including V.D. Zorkin, V.I. Khairullin, etc. Based on the results of the analytical review, the main conclusions are developed and the author's definition of justice in the format of the Philosophy of Law is given.


Author(s):  
Pedro M. Cabezos-Bernal ◽  
Juan J. Cisneros-Vivó

The great advances in the field of computer graphic design, have led to the development of more powerful applications, which have become an essential tool for the designer and have revolutionized the teaching of Descriptive Geometry. However, design software is not perfect, as there are some limitations that have to be overcome. This chapter focuses on solving the problem of obtaining oblique perspectives from a 3D model, as it is a common trouble in most of CAD software, since they only provide orthogonal projections and perspectives from a 3D model. This obstacle has led to the fact that the use of oblique projections, such as military and cavalier perspectives, has been drastically reduced.


2019 ◽  
Vol 7 (4) ◽  
pp. 112 ◽  
Author(s):  
Gabriele Cervino

The history of dentistry, of course, has followed a constant development since the dawn of society. The dental profession, reserved in ancient times to people with special skills and high rank, after the Middle Ages was diminished and practiced by barbers. The pharmacological evolution of oral surgery techniques has led this branch, today as never before, to obtain a level of specialization and preparation comparable to all other specialist medical branches. Some milestones in the history of dentistry will be considered so as to finally understand how the importance of anesthetic drugs was of primary importance, and which drugs are used today.


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