scholarly journals What Do We Know About Algol?

1980 ◽  
Vol 88 ◽  
pp. 217-219 ◽  
Author(s):  
S. Söderhjelm

A comprehensive analysis of previously published observations of Algol has been submitted to Astronomy&Astrophysics under the title “Geometry and Dynamics of the Algol System”. The main results can be summarized as follows:The masses of the three components are mA = 3.6±0.1, mB=0.79±0.01, mC=1.6±0.1 solar masses.The orbit of Algol C is co-planar with the AB-orbit within some 3°, but polarimetry of the eclipsing pair indicates that the senses of revolution are opposite.The close orbit is circular, thus the 32 year period in the times of minima can not be explained by apsidal motion.

Author(s):  
Meha Pant

The areas in and around India have always had a close association in building up of events which with time have attained historical and cultural prominence. In this study of cultural association the today's neighboring countries of Pakistan and Afghanistan have served as a passage of the influx of various cultures into the Indian subcontinent. The end of the Cold War highlighted the new threats which had emerged, not bound in the notions of safeguarding the integrity and sovereignty; they were way beyond territorial demarcations. These new threats were transnational in form with a much larger impact on the masses of the state. The rise and fall of Taliban in Afghanistan and the Anti India Islamic forces in Pakistan with the rise of India as a new regional power has led to new perspectives in concerns for the diplomatic and bilateral relations between these countries. What remains to be pointed is the level of porosity of borders and the ancient passes which have been routes for trade and inter cultural affiliations among these countries. The period of 2009-2015 was marked by various incidents which rocked the subcontinent bringing in strategic concerns to a new level. This article would study the historical linkages and cultural affiliations which binds the area of Afghanistan, Pakistan and India into a deeper relationship. Along with dwelling into the political scenario defined by bilateral and diplomatic ties which has taken up an important place in the times of changing perspectives of war and conflict.


Author(s):  
David Nasaw

The traditional high school education, by unfitting its graduates “for work with their hands,” encouraging them instead to look beyond the factory for their future employment, had become more of a problem than a solution. Still, despite its faults, it remained the only viable institutional solution to the “youth” and “worker” problems. To eject working-class youth from the institutions best situated to ease them through the perils of adolescence into the responsibilities of adulthood would serve no good purpose. The task confronting the business community and the critics of the high schools was a complex one: they wanted to bring as many “plain people” as possible into the high schools and keep them there through their teens, but in such a way that their expectations for life after graduation would not be inappropriately raised. Industrial schooling appeared to be the solution. Not only would such programs direct students towards realistic and realizable futures, but they would also attract many working class students who, the experts claimed, had been frightened away by the traditional secondary school curriculum. The masses, it was said, were not entering or remaining in the high schools because the high school curriculum had not been adjusted to their special needs. The muckrakers took great delight in calling attention to what they considered the failure of the high schools to move out of the dark ages. The secondary schools' exclusive emphasis on “culture,” it was argued, might have been appropriate to an earlier era, but was most definitely not appropriate to the modern age. “Our medieval high schools: shall we educate children for the 12th or the 20th century?” asked a Saturday Evening Post article somewhat ingenuously in 1912, the conclusion having already been reached that the schools were at least eight centuries behind the times. The critics of the public high schools, especially those from the business world, accepted without question the inability of the “masses” to proceed at the same academic rate as the “classes.” The working-class children were failing because they could not keep up with their middle-class counterparts and, in fact, were totally incapable of learning the same kinds of things.


Ritual ‘tends to be derided or discarded as the rationalization of society develops’ (Dr Bernstein). Probably to most people in our own society the word suggests what goes on in church or the starchy behaviour of stuffed shirts or gleams of the picturesque and remote woven quaintly into the routine of established institutions. That is to say, it suggests the marginal or the irrelevant, or else the Catholic tradition of religious worship. However, it might be more realistic to think instead of the Chinese in the contemporary act of translating into myth the saga of the revolution: ‘The long battle of the Chinese, first against their foreign enemies and then in the communist phase in three successive civil wars, has been made into a long musical epic which is now to be filmed. It is displayed in exhibits in the new museum of the revolution; it makes the background for songs and stories, the reference point for exhortations and reproach. The past is deliberately kept fresh in the public mind and it is presented with two sides. The embattled, slow triumph of the revolution, and the long prostration of China, mauled and humiliated, the masses wretched and silenced; that too is real to the Chinese.’ ( The Times , 27 April 1965). Here is the classical myth-ritual complex in current idiomatic form.


Author(s):  
Chengsen Wang ◽  
Kun Qu ◽  
Yizhe Ren ◽  
Lina Liu ◽  
Wei Wang

With the development of the times, people's economic level is improving, the urban construction is accelerated, the road, bridge and tunnel construction as the focus of the urban construction scale of construction projects and the construction quantity is also growing. Subsequently, people pay special attention to their quality problems. At the same time, there are many difficulties and technical problems waiting to be solved in the construction process. These difficulties and technical problems are the important factors influencing the quality of tunnel construction. Only strictly and comprehensively control it so that the roads, bridges and tunnels can be well and rapidly developed. Next, the paper will make a comprehensive analysis of the difficulties and technical countermeasures in the construction of road bridge tunnel.


2019 ◽  
Vol 624 ◽  
pp. L3 ◽  
Author(s):  
W. Schmutz ◽  
G. Koenigsberger

Context. The variability of the Wolf-Rayet star EZ CMa has been documented for close to half a century, and a clear periodicity of ∼3.7 days is established. However, all attempts to prove that it is a binary have failed because the photometric, spectroscopic, and polarimetric variations are not coherent over more than a few orbital cycles. Aims. In this Letter we show that the lack of coherence in the variability can be explained with a very rapid apsidal motion in a binary orbit. Methods. We measured the times of minima in a recently published exceptionally long photometric light curve obtained by the Toronto BRITE satellite. The apsidal motion and the system eccentricity are determined from the length of the time intervals between these minima, which alternate in their duration, following a pattern that is clearly associated with apsidal motion. These minima are superposed on brightness enhancements of the emission from a shock zone, which occur at about the times of periastron phases. Results. We determine the orbital periodicity, Pa = 3.63 d, and the period of the apsidal motion, U ≃ 100 d, which together yield an average sidereal period of Ps = 3.77 d. The eccentricity is found to be close to 0.1. The rate of periapsis retreat changes significantly over the period of observation and is determined to be −16° P−1a at the beginning of the observing period and −10° P−1a at the end. Conclusions. We demonstrate that by introducing a fast apsidal motion, the basic photometric variability is very well explained. The binary nature of EZ CMa is now established. This might imply that other apparently single Wolf-Rayet stars that emit hard X-rays, similar to EZ CMa, are also binaries.


2003 ◽  
Vol 25 (3) ◽  
pp. 327-348 ◽  
Author(s):  
Elisabeth Allgoewer

Emil Lederer (18821939) was exposed to diverse influences. In Vienna he was a student of Eugen von Bhm-Bawerk, Friedrich von Wieser, and Eugen von Philippovich, but when Hilferding and Otto Bauer spoke in those Viennese seminars Lederer must often have taken the side of the Marxists believe Jakob Marschak et al. (1941, p. 80). In Berlin, Lederer attended Gustav Schmoller's lectures. His supervisor in Munich, where he received a second doctoral degree, was Lujo Brentano. Lederer's habilitation submitted to the University of Heidelberg entailed the first comprehensive analysis of the working conditions and political attitudes of salaried employees (Dickler 1987, p. 157). As much as his last work, on the State of the Masses, published posthumously in 1940, it was an important contribution to sociology.


2011 ◽  
Vol 7 (4) ◽  
pp. 567-570 ◽  
Author(s):  
JAIME ROS

Abstract:In his comprehensive analysis of the relationship between institutions and economic growth, Ha-Joon Chang, in his article ‘Institutions and Economic Development: Theory, Policy and History’, reviews the empirical evidence on this relationship emphasizing the contrast between the conclusions that one can derive from the time-series evidence and the claims often made in favor of ‘liberalized institutions’ based on the results of cross-section studies. Does the time-series evidence contradict the results of cross-section studies regarding the relationship between institutions and growth? In this comment, I argue that in stressing the contrast between these two kinds of evidence, Chang falls short of a full criticism, consistent with his theoretical analysis, of cross-section studies while at the same time failing to infer what the time-series evidence really shows.


2019 ◽  
Vol 6 (1) ◽  
pp. 1-12
Author(s):  
Fu`ad Arif Noor

Science becomes a furqon/criterion, distinguishing between the quality of the creature, even the quality of the man himself. Science is intended as an appetizer reality, then the name is a reality not only in the form of objects, phenomena, facts, data concrete empirical. So, we need approaches or different methods, and not enough to just rely on the senses, instinct and sheer human rationality. Moreover, basically humans also have the potential tool if used optimally can understand and uncover the whole truth of reality. Philosophy of Science today is better known as a vehicle for interactive dialogue between philosophy and science. Science is "fertile ground" for the study of philosophy (Philosophy of Science), and the philosophy is the foundation that is very useful for science in progress-progress. Hence the development and progress of the Philosophy of Science is inseparable from the development and progress of science, and vice versa.Philosophy of Science arable fields more focused on the components of ontology, epistemology, and axiology science. Similarly to the sciences of Islamic understanding of the construction philosophy can not be separated from these three components (ontology, epistemology, and axiology) can provide the basis for the review and development of sciences of Islamic.


2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Chengsen Wang ◽  
Kun Qu ◽  
Yizhe Ren ◽  
Lina Liu ◽  
Wei Wang

With the development of the times, people's economic level is improving, the urban construction is accelerated, the road, bridge and tunnel construction as the focus of the urban construction scale of construction projects and the construction quantity is also growing. Subsequently, people pay special attention to their quality problems. At the same time, there are many difficulties and technical problems waiting to be solved in the construction process. These difficulties and technical problems are the important factors influencing the quality of tunnel construction. Only strictly and comprehensively control it so that the roads, bridges and tunnels can be well and rapidly developed. Next, the paper will make a comprehensive analysis of the difficulties and technical countermeasures in the construction of road bridge tunnel.


1912 ◽  
Vol 5 (3) ◽  
pp. 273-282
Author(s):  
Rudolf Eucken
Keyword(s):  

He is but a superficial observer of the times who can think that the movement of life today is altogether against religion, and that only the denial of religion has the spirit of the age with it.For, certain as it is that blatant denial still holds the public ear and is more and more permeating the masses, yet in the work of the intellect, and likewise in the depths of men's souls, the case is different. Here, with ever greater vigor, is springing up the feeling that religion is indispensable, the yearning for religion. What is understood by religion is often anything but clear, and often very different from the traditional forms of religion; but the demand is unmistakable for more depth of life and for the establishment of profounder inner connections than our visible existence affords.


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