scholarly journals SENTINEL-1 INSAR PROCESSING OF CORNER REFLECTOR INFORMATION IN THE NORTHERN-BOHEMIAN COAL BASIN

Author(s):  
I. Hlaváčová ◽  
L. Halounová ◽  
P. Stanislav

The mining area previously monitored by TerraSAR-X InSAR is now monitored by Sentinel-1 InSAR. Although the processing of the IWS (TOPS) mode requires additional processing steps and the coregistration has to be performed with the precision of 0.001 pixel (in the azimuth direction), if an area within one burst is processed, such a precise coregistration is not necessary. Information from 11 corner reflectors is evaluated, and significant movements at one of them were detected. Although it seems to be uplift, it is more probable that the movement is in down-the-slope direction, which has a negative sensitivity with regard to the satellite line of sight. The movement is similar to the one detected by TerraSAR-X satellite in the past. At the end of the monitoring period, the movement seems to settle down; future monitoring will show more about the dynamicity of the movement.

Author(s):  
I. Hlaváčová ◽  
L. Halounová ◽  
P. Stanislav

The mining area previously monitored by TerraSAR-X InSAR is now monitored by Sentinel-1 InSAR. Although the processing of the IWS (TOPS) mode requires additional processing steps and the coregistration has to be performed with the precision of 0.001 pixel (in the azimuth direction), if an area within one burst is processed, such a precise coregistration is not necessary. Information from 11 corner reflectors is evaluated, and significant movements at one of them were detected. Although it seems to be uplift, it is more probable that the movement is in down-the-slope direction, which has a negative sensitivity with regard to the satellite line of sight. The movement is similar to the one detected by TerraSAR-X satellite in the past. At the end of the monitoring period, the movement seems to settle down; future monitoring will show more about the dynamicity of the movement.


1985 ◽  
Vol 106 ◽  
pp. 437-442
Author(s):  
E. Brinks ◽  
W. B. Burton

It has become clear in the past few years that the distribution and kinematics of HI in M31 is far from simple. The new high-resolution survey made with the Westerbork SRT in the 21-cm line of atomic hydrogen by Brinks and Shane (1983) shows this dramatically. Along almost any line of sight through M31 two separate velocity systems are sampled. Based on a previous survey Shane (1978) and later Bajaja and Shane (1982) proposed that the extra component is due to warping of the plane of the galaxy into the direction of and crossing the line-of-sight. Roberts et al. (1978) and Whitehurst et al. (1978) emphasized that the observed profile structure ruled out confinement of the gas to a thin plane. Unwin (1983) reached a similar conclusion on the basis of his survey. The most complete model produced up until now which accounts for the two velocity systems is the one by Henderson (1979), based on the 100-m Effelsberg survey of M31 by Cram et al. (1980)


2011 ◽  
Vol 13 (2) ◽  
pp. 201-171
Author(s):  
Nāṣir Al-Dīn Abū Khaḍīr

The ʿUthmānic way of writing (al-rasm al-ʿUthmānī) is a science that specialises in the writing of Qur'anic words in accordance with a specific ‘pattern’. It follows the writing style of the Companions at the time of the third caliph, ʿUthmān b. ʿAffān, and was attributed to ʿUthmān on the basis that he was the one who ordered the collection and copying of the Qur'an into the actual muṣḥaf. This article aims to expound on the two fundamental functions of al-rasm al-ʿUthmānī: that of paying regard to the ‘correct’ pronunciation of the words in the muṣḥaf, and the pursuit of the preclusion of ambiguity which may arise in the mind of the reader and his auditor. There is a further practical aim for this study: to show the connection between modern orthography and the ʿUthmānic rasm in order that we, nowadays, are thereby able to overcome the problems faced by calligraphers and writers of the past in their different ages and cultures.


Author(s):  
Daiva Milinkevičiūtė

The Age of Enlightenment is defined as the period when the universal ideas of progress, deism, humanism, naturalism and others were materialized and became a golden age for freemasons. It is wrong to assume that old and conservative Christian ideas were rejected. Conversely, freemasons put them into new general shapes and expressed them with the help of symbols in their daily routine. Symbols of freemasons had close ties with the past and gave them, on the one hand, a visible instrument, such as rituals and ideas to sense the transcendental, and on the other, intense gnostic aspirations. Freemasons put in a great amount of effort to improve themselves and to create their identity with the help of myths and symbols. It traces its origins to the biblical builders of King Solomon’s Temple, the posterity of the Templar Knights, and associations of the medieval craft guilds, which were also symbolical and became their link not only to each other but also to the secular world. In this work we analysed codified masonic symbols used in their rituals. The subject of our research is the universal Masonic idea and its aspects through the symbols in the daily life of the freemasons in Vilnius. Thanks to freemasons’ signets, we could find continuity, reception, and transformation of universal masonic ideas in the Lithuanian freemasonry and national characteristics of lodges. Taking everything into account, our article shows how the universal idea of freemasonry spread among Lithuanian freemasonry, and which forms and meanings it incorporated in its symbols. The objective of this research is to find a universal Masonic idea throughout their visual and oral symbols and see its impact on the daily life of the masons in Vilnius. Keywords: Freemasonry, Bible, lodge, symbols, rituals, freemasons’ signets.


Author(s):  
Stefan Bauer

How was the history of post-classical Rome and of the Church written in the Catholic Reformation? Historical texts composed in Rome at this time have been considered secondary to the city’s significance for the history of art. The Invention of Papal History corrects this distorting emphasis and shows how history-writing became part of a comprehensive formation of the image and self-perception of the papacy. By presenting and fully contextualizing the path-breaking works of the Augustinian historian Onofrio Panvinio (1530–68), this book shows what type of historical research was possible in the late Renaissance and the Catholic Reformation. Historiography in this period by no means consisted entirely of commissioned works written for patrons; rather, a creative interplay existed between, on the one hand, the endeavours of authors to explore the past and, on the other hand, the constraints of patronage and ideology placed on them. This book sheds new light on the changing priorities, mentalities, and cultural standards that flourished in the transition from the Renaissance to the Catholic Reformation.


Worldview ◽  
1960 ◽  
Vol 3 (9) ◽  
pp. 7-8
Author(s):  
Will Herberg

John Courtney Murray's writing cannot fail to be profound and instructive, and I have profited greatly from it in the course of the past decade. But I must confess that his article, "Morality and Foreign Policy" (Worldview, May), leaves me in a strange confusion of mixed feelings. On the one hand, I can sympathize with what I might call the historical intention of the natural law philosophy he espouses, which I take to be the effort to establish enduring structures of meaning and value to serve as fixed points of moral decision in the complexities of the actual situation. On the other hand, I am rather put off by the calm assurance he exhibits when he deals with these matters, as though everything were at bottom unequivocally rational and unequivocally accessible to the rational mind. And I am really distressed at what seems to 3ie to be his woefully inadequate appreciation of the position of the "ambiguists," among whom I cannot deny I count myself.


2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
G Placella ◽  
V Pace ◽  
P Antinolfi ◽  
V Salini

Abstract Nowadays venous VTE represents an important perioperative and postoperative complication in patients undergoing elective Major Orthopedic Surgery (MOS). There are significant discrepancies between clinical practice, international recommendations, and published guidelines. Although thromboembolic events may be less common these days than in the past, they can still lead to serious medical complications. Therefore, most patients undergoing MOS procedures are provided with one of the thromboprophylactic treatments. The optimum timing of LMWH administrations remains debated. Customized structured electronic searches in PubMed and Cochrane database. Meta-Analysis, Randomized Controlled Trials, Systematic Reviews on different strategies of the use of LMWH for MOS. Studies on prophylactic regimens showed that subcutaneous LMWH plays a key role in the management of thromboprophylaxis in MOS. However, some controversies still stand. Among those most relevant, it remains unclear whether to start thromboprophylaxis before or after MOS to better balance the risks of clotting and bleeding. With regards to different times of LMWH administration, there is no convincing evidence that starting prophylaxis 12 hours preoperatively is associated with lower risks of VTE compared to prophylaxis started 12 to 24 hours postoperatively. Furthermore, it seems that the most safe and efficient LMWH regimen is the one called “Just-in-time” (LMWH started 6 hours post-op).


1979 ◽  
Vol 3 (3-4) ◽  
pp. 242-244 ◽  
Author(s):  
Bruce Kuklick

Despite differences in coloration Miller and Benson are birds of a feather. Although he is no Pollyanna, Miller believes that there has been a modest and decent series of advances in the social sciences and that the most conscientious, diligent, and intelligent researchers will continue to add to this stock of knowledge. Benson is much more pessimistic about the achievements of yesterday and today but, in turn, offers us the hope of a far brighter tomorrow. Miller explains Benson’s hyperbolic views about the past and future by distinguishing between pure and applied science and by pointing out Benson’s naivete about politics: the itch to understand the world is different from the one to make it better; and, Miller says, because Benson sees that we have not made things better, he should not assume we do not know more about them; Benson ought to realize, Miller adds, that the way politicians translate basic social knowledge into social policy need not bring about rational or desirable results. On the other side, Benson sees more clearly than Miller that the development of science has always been intimately intertwined with the control of the environment and the amelioration of the human estate.


1991 ◽  
Vol 148 ◽  
pp. 15-23 ◽  
Author(s):  
B. E. Westerlund

A vast amount of observational data concerning the structure and kinematics of the Magellanic Clouds is now available. Many basic quantities (e.g. distances and geometry) are, however, not yet sufficiently well determined. Interactions between the Small Magellanic Cloud (SMC), the Large Magellanic Cloud (LMC) and our Galaxy have dominated the evolution of the Clouds, causing bursts of star formation which, together with stochastic self-propagating star formation, produced the observed structures. In the youngest generation in the LMC it is seen as an intricate pattern imitating a fragmented spiral structure. In the SMC much of the fragmentation is along the line of sight complicating the reconstruction of its history. The violent events in the past are also recognizable in complex velocity patterns which make the analysis of the kinematics of the Clouds difficult.


2007 ◽  
Vol 3 (S242) ◽  
pp. 427-431
Author(s):  
M. K. Argo ◽  
A. Pedlar ◽  
T. W. B. Muxlow ◽  
R. J. Beswick

AbstractA study of the distribution of OH gas in the central region of the nearby active starburst galaxy M82 has confirmed two previously known bright masers and revealed several new main line masers. Three of these are seen only at 1665 MHz, one is detected only at 1667 MHz, while the rest are detected in both lines. Observations covering both the 1665 and 1667 MHz lines, conducted with both the Very Large Array (VLA) and the Multi-Element Radio Linked Interferometer Network (MERLIN), have been used to accurately measure the positions and velocities of these features. This has allowed a comparison with catalogued continuum features in the starburst such as HII regions and supernova remnants, as well as known water and satellite line OH masers. Most of the main line masers appear to be associated with known HII regions although the two detected only at 1665 MHz are seen along the same line of sight as known supernova remnants.


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