Guglielmo Marconi and Radioastronomy

1996 ◽  
Vol 175 ◽  
pp. 1-4
Author(s):  
Giancarlo Setti
Keyword(s):  
Antenna Array ◽  
Radio Signal ◽  
Rapid Development ◽  
100Th Anniversary ◽  
Direct Link ◽  
Radio Communications ◽  
Guglielmo Marconi ◽  
Great Discovery ◽  
First Time

The decision to hold this IAU Symposium at Bologna on the occasion of the 100th anniversary of the discovery of the wireless telegraphy represents in itself a recognition of the widespread feeling of a historical link between the great discovery of Guglielmo Marconi and the birth of radioastronomy. Obviously, it is not a direct link. We all well know that the birth of radioastronomy must be traced back to the year 1932 when Karl Jansky recognized for the first time the existence of a radio signal probably associated with a celestial source. This a classical example of a ‘serendipitous’ discovery made while Jansky was investigating for the Bell Telephone Laboratories the sources of radio interferences with a rotating antenna array operating at about 14 m wavelength. The study of local disturbances was of primary importance in the rapid development of radio communications which had been geared by the Marconi's discovery.

A QUADRUPOLE STRIP ANTENNA ARRAY FOR THE L-RANGE WIRELESS RADIO COMMUNICATIONS

2013 ◽  
Vol 72 (12) ◽  
pp. 1093-1098
Author(s):  
Yu. B. Nechaev ◽  
E. S. Makarov ◽  
I. V. Popov
Keyword(s):  
Antenna Array ◽  
Radio Communications

Aleksandr A. Yunatov and his studies in Mongolia (to his 100th anniversary)

2009 ◽  
pp. 97-112
Author(s):  
Z. V. Karamysheva
Keyword(s):  
Vegetation Cover ◽  
100Th Anniversary ◽  
Research Data ◽  
Vegetation Map ◽  
Medium Scale ◽  
First Time

The paper is dedicated to the famous geobotanist and botanical geographer A. A. Yunatov and his researches in Mongolia. Yunatov’s scientific activities and his role as an organizer of the science is analyzed. His personal contributions into a study of the vegetation of Mongolia are following: the vegetation cover of Mongolia was described in detail for the first time, zonal and altitudinal regularities of its distribution were revealed, the scheme of botanical-geographic regionalization and the first medium-scale vegetation map were compiled. Author’s research data were published in Russia, Mongolia and China.

scholarly journals A Study on the Readability of the English Versions of Chinese Red Tourism Based on Readers’ Response

2021 ◽  
Vol 2 (3) ◽  
pp. 5-11
Author(s):  
Huijia Shen
Keyword(s):  
Quality Assessment ◽  
Communist Party ◽  
Rapid Development ◽  
100Th Anniversary ◽  
Target Language ◽  
Communist Party Of China ◽  
History Museum ◽  
Memorial Museum ◽  
Subjective Judgments

The year 2021 is the 100th anniversary of the founding of the Communist Party of China. With the rapid development of red tourism in China, the importance of red publicity translation has become increasingly prominent. How to evaluate the readability of red publicity translation has gradually become a hot issue. Taking the English versions of Museum of the War of Chinese People’s Resistance against Japanese Aggression, Jinggangshan Revolution Museum, Chongqing Hongyan Revolution History Museum and Nanhu Revolution Memorial Museum as examples, this article collects 16 target language readers’ feedbacks on the red tourism publicity translations through questionnaire and interview. The results show that the readability of the translation is influenced by many factors such as the quality of the text, the length of the text and the background of the readers. Due to the lack of understanding of the target language and text functions, there are various problems in the translation of words, sentences and discourses. Studies show that the emphasis of the importance of target language readers in quality assessment of red tourism publicity texts may effectively prevent researchers from substituting their own subjective judgments for readers’ feedback, thus; it is important to provide a more readable publicity text. This article attempts to improve the readability of red publicity translation, so as to better promote Chinese red tourism and spread Chinese red culture.

LITERARY HERITAGE OF AHMEDKHAN NALOYEV: MAJOR MILESTONES IN BIOGRAPHY AND PROBLEMS OF CREATIVITY (to the 100th anniversary of the birth of the writer)

Kavkazologiya ◽  
2021 ◽  
pp. 154-165
Author(s):  
L.B. KHAVZHOKOVA ◽  
Keyword(s):  
Literary Criticism ◽  
Compositional Analysis ◽  
Literary Work ◽  
100Th Anniversary ◽  
Cultural Development ◽  
Scientific Methods ◽  
Literary Heritage ◽  
General Scientific ◽  
First Time

The article is devoted to the study of the life and literary heritage of one of the significant creative figures in the Kabardian literature of the 60s – 80s. Of the twentieth century, which determined the features of the formation and development trends of national prose of the specified period. The relevance of the stated topic is due to the fact that until now in the Adygeyan literary criticism there are no generalizing works on the study of milestones in the biography and a comprehensive analysis of the literary work of A. Naloev. The scientific novelty of the research lies in the fact that for the first time a comprehensive substantive and structural-compositional analysis of the writer's works is carried out, starting from the first sketches in the form of miniatures and satirical and humorous stories, ending with larger genres – a story and a novel. The aim of the study is to recreate a complete biographical and creative picture of the life of a talented writer, philologist, educator, educator who raised a whole generation of artists and workers of culture and education. To achieve the goal, a number of tasks are solved, among the main ones – the study of the milestones of the biography of A. Naloev, the analysis of works, the consideration of the ideological and thematic orientation and the genre-style paradigm of the writer's work, determination of the role and place of his creative heritage in national literature and in general in cultural development Adyghe ethnos. The study used general scientific methods with an emphasis on the method of analysis, description and generalization. The results obtained have theoretical significance for further study of national literatures. They can become a significant practical help in writing various kinds of research papers, as well as in the preparation of special courses in universities and colleges.

Re-Purposing MOOCs and OER for Academic Credit in the UK Using a Flexible Work Based Learning Program at an English University

2016 ◽  
pp. 121-143
Author(s):  
Jon Talbot
Keyword(s):  
Online Courses ◽  
Rapid Development ◽  
Open Educational Resources ◽  
Pedagogical Practices ◽  
Flexible Work ◽  
Learning Program ◽  
Learning Framework ◽  
The Uk ◽  
The University ◽  
First Time

The rapid development of open educational resources (OER) and massive open online courses (MOOCs) has resulted for the first time in high quality higher education learning materials being freely available to anyone in the world who has access to the internet. While the emphasis in the literature is principally upon such matters as technology and cost pressures, rather less attention has been paid to ways in which pedagogical practices can be adapted to address these changes. This chapter reports on a UK university where innovative pedagogical practices have developed over a twenty-year period, which enables such adaptation. The development of a flexible work based learning framework enables the exploitation of these developments for the benefit of learners, tutors, and the university. The case study also highlights the importance of quality assurance and cost as key to competitive advantage in an increasingly globalised context.

An X-band gain-enhanced bidirectional antenna array using strip-loaded dielectric resonator operating in TE3δ1 mode

2020 ◽  
Vol 12 (9) ◽  
pp. 915-921
Author(s):  
Ling-Ling Yang ◽  
Yan-Hui Ke ◽  
Jian-Xin Chen
Keyword(s):  
Antenna Array ◽  
Dielectric Resonator ◽  
Side Wall ◽  
High Order Mode ◽  
Yagi Antenna ◽  
X Band ◽  
Metallic Strip ◽  
Marchand Balun ◽  
First Time ◽  
Good Agreement

AbstractA bidirectional dielectric resonator (DR) antenna array using back-to-back quasi-Yagi antenna configuration is proposed and implemented for the first time. The DR operating at higher-order TE3δ1 mode is used as a magnetic dipole, applying for the driver of quasi-Yagi antenna. Due to the high-order mode employment, the antenna gain can be enhanced. By partially loading the metallic strip on the side wall of the DR, the gain can be further enhanced. In addition, a simple dual Marchand balun is constructed for feeding the two quasi-Yagi antennas directly for bidirectional radiation. To verify the design concept, a prototype operating at the X-band is fabricated and measured. Good agreement between the simulated and measured results can be observed.

The Oxford Handbook of Islamic Archaeology

2020 ◽  
Keyword(s):  
Material Culture ◽  
Ethical Issues ◽  
Rapid Development ◽  
Global Scale ◽  
Sub Saharan Africa ◽  
Islamic Art ◽  
Sub Saharan ◽  
And Migration ◽  
Islamic Archaeology ◽  
First Time

Born from the fields of Islamic art and architectural history, the archaeological study of the Islamic societies is a relatively young discipline. With its roots in the colonial periods of the late 19th and early 20th centuries, its rapid development since the 1980s warrants a reevaluation of where the field stands today. This Handbook represents for the first time a survey of Islamic archaeology on a global scale, describing its disciplinary development and offering candid critiques of the state of the field today in the Central Islamic Lands, the Islamic West, Sub-Saharan Africa, and Asia. The international contributors to the volume address such themes as the timing and process of Islamization, the problems of periodization and regionalism in material culture, cities and countryside, cultural hybridity, cultural and religious diversity, natural resource management, international trade in the later historical periods, and migration. Critical assessments of the ways in which archaeologists today engage with Islamic cultural heritage and local communities closes the volume, highlighting the ethical issues related to studying living cultures and religions.

scholarly journals General relativity and cosmology

2015 ◽  
Vol 24 (14) ◽  
pp. 1530030
Author(s):  
Martin Bucher ◽  
Wei-Tou Ni
Keyword(s):  
General Relativity ◽  
Quantum Gravity ◽  
Gravitational Waves ◽  
100Th Anniversary ◽  
Complete Theory ◽  
Historical Overview ◽  
Field Equations ◽  
First Time

This year marks the 100th anniversary of Einstein’s 1915 landmark paper “Die Feldgleichungen der Gravitation” in which the field equations of general relativity were correctly formulated for the first time, thus rendering general relativity a complete theory. Over the subsequent hundred years, physicists and astronomers have struggled with uncovering the consequences and applications of these equations. This paper, which was written as an introduction to six chapters dealing with the connection between general relativity and cosmology that will appear in the two-volume book One Hundred Years of General Relativity: From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity, endeavors to provide a historical overview of the connection between general relativity and cosmology, two areas whose development has been closely intertwined.

scholarly journals Supernova searches and rates

2013 ◽  
Vol 9 (S296) ◽  
pp. 37-44
Author(s):  
Enrico Cappellaro
Keyword(s):  
Stellar Evolution ◽  
Rapid Development ◽  
Cosmic Time ◽  
Stellar Populations ◽  
Evolution Theory ◽  
Direct Link ◽  
Local Universe ◽  
Crucial Test

AbstractSupernova statistics, establishing a direct link between stellar populations and explosion scenarios, is a crucial test of stellar evolution theory. Nowadays, a number of SN searches in the local Universe and at high redshifts are allowing observational probes of long standing theoretical scenarios. I will briefly review some of the most interesting results in particular for what concern the evolution with cosmic time of the SN rate, which is one of the topic that in the last few years had a most rapid development.

scholarly journals DEUTERIUM AS A TOOL FOR CHANGING THE PROPERTIES OF PHARMACEUTICAL SUBSTANCES (REVIEW)

2021 ◽  
pp. 65-73
Author(s):  
ANTON V. SYROESHKIN ◽  
TATYANA V. PLETENEVA ◽  
ELENA V. USPENSKAYA ◽  
OLGA V. LEVITSKAYA ◽  
IRINA V. TARABRINA ◽  
...  
Keyword(s):  
Rapid Development ◽  
Essential Elements ◽  
Pharmaceutical Ingredients ◽  
Kinetic Isotope ◽  
Pharmaceutical Substances ◽  
Essential Trace Elements ◽  
Reduced Toxicity ◽  
New Compounds ◽  
First Time ◽  
Active Substances

The review is devoted to the influence of the hydrogen isotope–deuterium on biological models of organisms and the biological activity of pharmaceutical substances. The positions of the influence of deuterium on the properties of active pharmaceutical ingredients and excipients are examined from different perspectives. The first position reflects an increase in the kinetic isotope effect (KIE) in processes involving known pharmaceutical substances in aqueous solutions with a deuterium/protium ratio (D/H) below natural. For the first time, the dose-response diagram shows the identity of deuterium with essential trace elements, when a deficiency and excess of an element reduces the organism's vitality. Improved kinetic characteristics are demonstrated for the molecular and organism levels of different hierarchical gradations. In particular, they consist in the possibility of increasing the dissolution rate of substances by influencing the carbohydrate mutarotation processes and the optical activity of chiral substances, increased accumulation of essential elements in medicinal plants and other processes associated with a possible change in metabolic pathways in the cell and the organism as a whole. The second considered position of the influence of deuterium is associated with the use of deuterated substances–new compounds or obtained by substitution of protium in known protium analogues. The KIE is presented, which is expressed in a decrease in the biotransformation rate as a result of deuteration, it allows predicting a rapid development of the new direction in the development of drugs. Having an identical therapeutic effect, deuterated analogs provide improved pharmacokinetic characteristics, such as reduced toxicity, blocked epimerization of optically active substances, and a change in the mechanisms of biotransformation. The obtained results make it possible to predict the mechanisms of the effect of deuterium on the biochemical transformations of pharmaceutical substances in the organism.

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