scholarly journals From the Solar Corona to Clusters of Galaxies: The Radio Astronomy of Bruce Slee

2004 ◽  
Vol 21 (1) ◽  
pp. 23-71 ◽  
Author(s):  
Wayne Orchiston

AbstractOwen Bruce Slee is one of the pioneers of Australian radio astronomy. During World War II he independently discovered solar radio emission, and, after joining the CSIRO Division of Radiophysics, used a succession of increasingly more sophisticated radio telescopes to examine an amazing variety of celestial objects and phenomena. These ranged from the solar corona and other targets in our solar system, to different types of stars and the ISM in our Galaxy, and beyond to distant galaxies and clusters of galaxies. Although long retired, Slee continues to carry out research, with emphasis on active stars and clusters of galaxies. A quiet and unassuming man, Slee has spent more than half a century making an important, wide-ranging contribution to astronomy, and his work deserves to be more widely known.

2002 ◽  
Vol 1 (1) ◽  
pp. 95-99
Author(s):  
T. Prabu

Wonders of the night sky developed curiously to the ancient civilization and paved way to the development of an oldest branch of knowledge, Astronomy. Today it has developed to be rich field in science. Astronomy is much different from many other science fields. ? It deals with remote subjects, unimaginable magnitude distances, sizes and time. The conventional optical telescope could not reveal vast majority of objects in the sky. Apart from light there are other invisible radiations reaching the Earth from the celestial objects. People started exploring both ends of the electromagnetic spectrum. Ever since World War II, astronomers are exploring the radio sky, by using Radio Telescopes. It became a new branch of study, the Radio Astronomy. Interesting fundamental discoveries and the inquisitive nature of the problems developed curiosity for future explorations in this field. The celestial radio signals reaching us are extremely week. It is required to develop sophisticated tools and powerful techniques to aid radio astronomy observations. Today Radio Astronomy has developed to be a highly interdisciplinary field with connections to various fields of science and engineering.


2019 ◽  
Vol 8 (2) ◽  
pp. 24-29
Author(s):  
Manjinder Kaur

This study tends to shed light on early childhood care and education (ECCE) institutions with special reference to kindergartens in Fukuoka, Japan. The choice of the topic for study was derived by the importance of ECCE in children’s life and huge economic growth of Japan after worst effects of world war-II, which are thought to be linked with the education that children receives in Japan. The study is limited to four kindergartens in Fukuoka City and observations made for the study refers to 2018. Herein, different types of institutions providing ECCE, their infrastructural set-up, activities, along with curriculum are discussed. At the end, issues and challenges of ECCE system in Japan are discussed. It has been observed that the infrastructural facility and nature of activities are of high quality. Each and every care is being taken to inculcate habits, as well as to maintain physical and intellectual growth of children. The children seem to be highly happy and enjoy learning via various activities in these schools. It is clear that the devised policies on education and care of children are implemented in full spirit.


Author(s):  
Jana Asher ◽  
Dean Resnick ◽  
Jennifer Brite ◽  
Robert Brackbill ◽  
James Cone

Since its post-World War II inception, the science of record linkage has grown exponentially and is used across industrial, governmental, and academic agencies. The academic fields that rely on record linkage are diverse, ranging from history to public health to demography. In this paper, we introduce the different types of data linkage and give a historical context to their development. We then introduce the three types of underlying models for probabilistic record linkage: Fellegi-Sunter-based methods, machine learning methods, and Bayesian methods. Practical considerations, such as data standardization and privacy concerns, are then discussed. Finally, recommendations are given for organizations developing or maintaining record linkage programs, with an emphasis on organizations measuring long-term complications of disasters, such as 9/11.


Author(s):  
B. Lovell

The cavity magnetron was invented in Birmingham University and developed by the GEC for centimetric radar in World War II. Its existence was kept secret, and its deployment was delayed, in the belief that as soon as it was used the enemy would be able to adopt the technique both in radar and in countermeasures. The H 2 S radar using the cavity magnetron was first used in January 1943, and a Stirling bomber with H 2 S crashed a few nights later near Rotterdam. The radar equipment was recovered almost intact by Telefunken engineers. The author of a German report on the equipment, Otto Hachenberg, subsequently became a colleague of the present author in radio astronomy. He died in 2001 and his report of May 1943 was discovered among his papers. It reveals that the principle of the cavity magnetron was already well known in Germany, based on work published in Leningrad in 1936. The most serious effect of the delay in deployment of the magnetron in centimetric radar was in the anti–U–boat campaign, in which the new centimetric radar became the main contributor to the successful end of the Battle of the Atlantic.


2015 ◽  
Vol 14 (3) ◽  
pp. 057-072
Author(s):  
Wojciech Pardała

Paper sums up different types of wooden leisure architecture of surroundings of Lodz, pointing at the most notable, emerging at the time of modernism, „glass house” made of wood. They emerged, in the mid-30s, as a fulfillment of a few garden-cities (conceived mostly as a leisure towns). Wooden houses, built in at least three different styles (local village-like, national and modern), became part of densely set-up complexes. Leisure houses were used as intended, only for a few years, before the World War II. Their use has changed form leisure to all-year housing, lasting till now, causing many conservational, technical and social problems. Now, among the growing knowledge of their value to history of architecture and urbanism, some ideas how to renew them, appear. A few of them are proposed by the local society of Kolumna „forest-city”.


Author(s):  
Jana Asher ◽  
Dean Resnick ◽  
Jennifer Brite ◽  
Robert Brackbill ◽  
James Cone

Since its post-World War II inception, the science of record linkage has grown exponentially and is used across industrial, governmental, and academic agencies. The academic fields that rely on record linkage are diverse, ranging from history to public health to demography. In this paper, we introduce the different types of data linkage and give a historical context to their development. We then introduce the three types of underlying models for probabilistic record linkage: Fellegi-Sunter based methods, machine learning methods, and Bayesian methods. Practical considerations such as data standardization and privacy concerns are then discussed. Finally, recommendations are given for organizations developing or maintaining record linkage programs, with an emphasis on organizations measuring long-term complications of disasters such as 9/11.


2020 ◽  
Vol 53 (2) ◽  
pp. 49-61
Author(s):  
Lisa Peschel

The World War II Jewish ghetto at Theresienstadt, forty miles northwest of Prague, was the site of an uncommonly active cultural life. Survivor testimony about the prisoners’ theatrical performances inspired a question: why were almost all of the scripts written in the ghetto comedies? The recent rediscovery of several scripts has made possible a detailed analysis that draws from recent research on the psychological effects of different types of humour. This analysis reveals that, regardless of age, language or nationality, the Theresienstadt authors universally drew upon two potentially adaptive types of humour (self-enhancing and affiliative humour) rather than two potentially maladaptive types (aggressive and self-defeating humour). Perhaps instinctively, they chose the very types of humour that have a demonstrated association with psychological health and that may have helped them preserve their psychological equilibrium in the potentially traumatising environment of the ghetto.


2019 ◽  
Vol 97 (4) ◽  
pp. 111-132
Author(s):  
Vincenzo Gannuscio

Persuasion is the central element of political propaganda of all times. From a historical point of view, it is a fact that, especially in conflict situations, the hegemonic actors adopt specific techniques and language choices for purposes of propaganda. The question of interest is in what ways and to what extent they are used in a targeted manner in order to influence different types of low- and middle-class audiences. A well-documented example is the persuasive use of language in Nazi propaganda before and during World War II. In this context, our question is whether past and present-day propagandistic and electoral campaigns make recourse to the same linguistic devices and strategies in order to persuade their intended audience. To this purpose, we shall concentrate on Hitler’s propaganda by primarily drawing on Victor Klemperer's (1933–1945) diaries and compare his linguistic observations to a corpus of campaigning speeches and programs by the German right-wing populist party AfD (Alternative für Deutschland).  


2021 ◽  
pp. 004711782110662
Author(s):  
Jae-Jung Suh ◽  
Jahyun Chun

After conflict, states occasionally succeed in reconciling with former adversaries. When they do, they do so in different ways. Some grudgingly sign a treaty to signal the end of a conflict. Others provide for not only reparations and compensations but also economic assistance as material evidence of reconciliation. Yet others offer apologies, official and unofficial, and engage their former adversaries in reflective dialog that transforms their relationship from enmity to amity. Is there a way to systemically organize different ways in which states reconcile? Can different types of reconciliation be identified? If so, what explains the types? We address these questions in this article. Based on our survey of war terminations in the post-World War II period, we identify four different types of reconciliation that former injurious states have made with their victim states – procedural, material, ideational, and substantial. We hypothesize that their choice of a reconciliation type can be explained in terms of a configuration of national interest and national reflection. In this article, we engage in a structured comparative analysis of the cases of reconciliation between France-Algeria, Japan-Korea, Germany-Czechoslovakia/Czech Republic, and Germany-Poland – that we argue closely resemble the four ideal types – and demonstrate that our hypotheses are confirmed. We conclude with a consideration of how likely it is for ideational and material reconciliation to develop into substantial reconciliation


Bernard Lovell, Astronomer by chance . London: Macmillan, 1991. Pp. 380, £18.99. ISBN 0-333-55195-8 In his Story of Jodrell Bank and Out of the zenith Sir Bernard Lovell has already told us in impressive detail how he fostered the new science of radio astronomy and, against fearful odds, built the 250 foot radio telescope now called the Lovell telescope. In his forthcoming Echoes of war we are promised an account of the development of the H 2 S radar system on which he worked during World War II. For those of us who are not prepared to plough through these specialized books I recommend Astronomer by chance ; not only does it cover the interesting stories of Jodrell Bank and the development of H 2 S but it tells us more about the man behind them.


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