Greek Mechanics in Arabic Context: Thābit ibn Qurra, al-Isfizārī and the Arabic Traditions of Aristotelian and Euclidean Mechanics

2001 ◽  
Vol 14 (1-2) ◽  
pp. 179-247 ◽  
Author(s):  
Mohammed Abattouy
Keyword(s):  
Comparative Study ◽  
Twelfth Century ◽  
Islamic Culture ◽  
Textual Tradition ◽  
The Law ◽  
The Comparative Study ◽  
The Impact

Assuming the crucial interest of Arabic material for the recovery of the textual tradition of some Greek texts of mechanics, the following article aims at presenting a partial survey of the Graeco-Arabic transmission in the field of mechanics. Based on new manuscript material dating from the ninth to the twelfth century, it investigates the textual and theoretical traditions of two writings ascribed to Aristotle and Euclid respectively and transmitted to Arabo-Islamic culture in fragmentary form. The reception and the impact of the Peripatetic Mechanics are analyzed on the basis of texts edited by al-Khāzinī as well as by the comparative study of the proof of the law of the lever in three authors: Pseudo-Aristotle, Thābit ibn Qurra, and al-Isfizārī. The codicological analysis of the extant manuscripts of Maqāla fī ‘l-mīzān – a rather systematic treatise on the balance ascribed to Euclid – leads to the assumption that it is a Greek fragment edited in Arabic. This reconstruction of the Arabic tradition of Euclidean mechanics is further elaborated by an annotated synopsis of al-Isfizārī's systematic recension of the text.

Federalism

2009 ◽  
Author(s):  
Pablo Beramendi
Keyword(s):  
Comparative Study ◽  
Rational Choice ◽  
Comparative Politics ◽  
Basic Premise ◽  
Methodological Considerations ◽  
The Comparative Study ◽  
The Impact

This article provides a partial but necessary review of the dominating themes, evolution, and pending tasks that await the comparative politics of federalism. The basic premise of this article is taken from rational choice institution-alism. The article fist delimits federalism as an institution, before it pays attention to the impact of federalism on democracy and the workings of the economy. An analysis of federalism as an endogenous institution is provided. The article also mentions a number of methodological considerations on the comparative study of the origins and consequences of federalism. It ends with a discussion of the various challenges that lie ahead of the field.

Small respiratory passages dysfunction in bronchial asthma

2020 ◽  
Vol 29 (6) ◽  
pp. 725-733
Author(s):  
O. Yu. Kytikova ◽  
M. V. Antonyuk ◽  
B. I. Gel'tser ◽  
E. E. Mineeva ◽  
T. A. Gvozdenko
Keyword(s):  
Comparative Study ◽  
Disease Control ◽  
Bronchial Asthma ◽  
Scientific Knowledge ◽  
Clinical Course ◽  
Pathological Process ◽  
Modern Methods ◽  
The Comparative Study ◽  
The Impact ◽  
Timely Treatment

The small respiratory passages dysfunction (SRPD) is found in the vast majority of patients with bronchial asthma (BA). The SRPD is currently recognized as the important pathogenetic feature of BA. The purpose of this review is to analyze the current scientific knowledge about the poorly studied aspects of the small respiratory passages (SRR) participation in the development of pathological process in BA, as well as the impact of small bronchial dysfunction on the clinical course, the exacerbation frequency and the disease control. The importance of SRPD diagnostics in BA patients for optimal and timely treatment is discussed. The modern methods of RPD pathology diagnostics are described; their informative use in the comparative study aspect is considered.

scholarly journals DETERMINATION OF THE WAVE ATTACK ANTICIPATED UPON A STRUCTURE FROM LABORATORY AND FIELD OBSERVATIONS

2011 ◽  
Vol 1 (7) ◽  
pp. 37
Author(s):  
W.A. Venis
Keyword(s):  
Comparative Study ◽  
Model Tests ◽  
Water Levels ◽  
Field Observations ◽  
Wave Impact ◽  
Spring System ◽  
Mass Spring ◽  
The Comparative Study ◽  
The Impact

Model tests have been carried out to obtain an insight into the magnitude of the wave-pressures in various situations. These tests showed, that sharp high pressure peaks occur in addition to the pressures caused by the reflecting of the waves, which pressures are quasi-static. As the structure can be compared with a multiple mass-spring system these pressure-peaks may cause the whole construction to vibrate. Wave-attack therefore can be expressed in terms of impact. Moreover, calculations revealed that the impact pressures were critical factors in determining the strength of the structure. So many model tests were carried out to determine the design and location of the sluices. These tests involved numerous water-levels discharges and waves. Regarding the pressure-peaks a comparative study was made in the model, which led to the structure being designed in such a way that the occurrence of critical impacts was reduced to an acceptable minimum. As it was impossible to avoid the occurrence of impact pressures entirely it remained necessary to determine a basic load for the structure that takes care of the impact pressures. As it has not yet appeared possible physically to determine a theoretical maximum for the impact pressures, it has to be borne in mind that there is a probability that each pressure measured will be exceeded. So this paper describes, how the cumulative frequency curve of the impacts for the case mentioned in 1.1 sub a, which served as a basis for determining the basic load was arrived at by a certain combination of laboratory and field observations. The data used for this purpose were a. Results of wave-impact measurements on a model of the sluices. This model, built in accordance with the results of the comparative study, was situated in the wind-flume of the "de Voorst" hydraulic laboratory. b. Wave height measurements in the Haringvliet during 1957 and 1958. c. Wind-speed measurements on board the lightship Qoeree, likewise during 1957 and 1958. d. Tidal registrations at Hellevoetsluis from 1920 to 1960. e. Wind-force data from the Hook of Holland, likewise from 1920 to 1960.

Legal Continuity

2018 ◽  
Author(s):  
Nimer Sultany
Keyword(s):  
Comparative Study ◽  
Social Theory ◽  
Legal Theory ◽  
Legal Order ◽  
Critical Legal Theory ◽  
The Law ◽  
The Comparative Study ◽  
The Revolution

This chapter critiques the binary dichotomy between the concepts of “continuity” and “rupture” within theoretical conceptualizations of the law. Whereas legal theories such as Kelsen’s emphasize rupture, theories such as Dworkin’s emphasize continuity. These theories fail to account for legal continuity and rupture because the law is neither a gapless system nor a coherent whole. Building on the comparative study of the role of law during revolutions, the chapter shows that a revolution maintains varying levels of legal rupture and continuity with the pre-existing legal order. Building on critical legal theory and social theory, it argues that the relation between revolution and legality cannot be represented systematically because law—whether prior to or after the revolution—is incoherent and thus generates a plurality of voices.

Comparative Law as the Study of Transplants and Receptions

2006 ◽  
pp. 440-476 ◽  
Author(s):  
Michele Graziadei
Keyword(s):  
New York ◽  
Comparative Study ◽  
Comparative Law ◽  
Complex Phenomenon ◽  
Legal Institutions ◽  
Non Local ◽  
Complex Patterns ◽  
The Law ◽  
The Comparative Study

The comparative study of transplants and receptions investigates contacts of legal cultures and explores the complex patterns of change triggered by them. The study of legal transfers offers considerable intellectual rewards. It shows that the law is a complex phenomenon and corrects simplistic views regarding what law is and how it develops. The spread of legal institutions, ideals, ideologies, doctrines, rules, and so on, is often in the hands of professional elites. The study of transplants and receptions demonstrates that the knowledge and standing of those elites comes from interactions between the local and non-local dimensions of the law, that is, between the national and international spheres. This picture is true in Berlin and in New York, in London and in Lima, but it is also true in less cosmopolitan environments.

scholarly journals Just retreat—how different countries deal with it: examples from Austria and England

2021 ◽  
Author(s):  
Thomas Thaler
Keyword(s):  
Risk Management ◽  
Social Justice ◽  
Comparative Study ◽  
Procedural Justice ◽  
Flood Risk ◽  
Crucial Role ◽  
Flood Risk Management ◽  
European Countries ◽  
The Comparative Study ◽  
The Impact

AbstractFlood risk management has developed a large inventory of potential actions to climate-related hazards. Within this wide array of measures, managed retreat of communities at risk is usually only taken into account if other strategies are ineffective or unavailable. Communities who are affected by managed retreat are confronted with radical changes in their livelihood. However, managed retreat is highly contested. The use of managed retreat includes not only the relocation of house owners but also has the challenge that it discriminates between landowners as some gain and others lose. Therefore, managed retreat raises issues of social justice. To mitigate the impact on land, compensation plays a crucial role in flood risk management. The level and kind of compensation varies between countries across the globe. In this paper, we compare two different policy compensation frameworks in two European countries: Austria and England. The comparative study shows how different compensation schemes affect social justice, both in terms of substantive distributions but also in terms of procedural justice.

scholarly journals Legal Basis of Collection Activity in the Russian Federation

2018 ◽  
Vol 9 (2) ◽  
Author(s):  
Marina Osipova
Keyword(s):  
Comparative Study ◽  
Russian Federation ◽  
Legal Status ◽  
Legal Regulation ◽  
Regulatory Framework ◽  
Legal Basis ◽  
The Russian Federation ◽  
The Law ◽  
The Comparative Study

This article considers the legal regulation of collection activities in the Russian Federation. The author carries out the comparative study of the existing regulatory framework on this issue and, on this basis, the author identifies the legal status of collection agencies in Russia. The author also analyzes the application of the norms of the noted legal act on collection activities in practice which results revealing its gaps. In the course of the study, legal conflicts are identified, which arise in connection with the existing contradictions in the law. In its final clauses, the article gives an assessment of the new normative legal act in general.

A Comparative Study Among Recursive Metaheuristics for Gene Selection

2020 ◽  
pp. 43-62
Author(s):  
Nassima Dif ◽  
Zakaria Elberrichi
Keyword(s):  
Comparative Study ◽  
Gene Selection ◽  
Positive Impact ◽  
Bat Algorithm ◽  
The Other ◽  
Slow Convergence ◽  
Speed Up ◽  
Refinement Procedure ◽  
The Comparative Study ◽  
The Impact

This chapter compares 4 variants of metaheuristics (RFA, EMVO, RPSO, and RBAT). The purpose is to test the impact of refinement on different types of metaheuristics (FA, MVO, PSO, and BAT). The refinement helps to enhance exploitation and to speed up the search process in multidimensional spaces. Moreover, it presents a powerful tool to solve different issues such as slow convergence. The different methods have been used for gene selection on 11 microarrays datasets to solve their various issues related to the presence of irrelevant genes. The obtained results reveal the positive impact of refinement on FA, MVO, and PSO, where all performances have been improved. On the other hand, this process harmed the BAT algorithm. The comparative study between the 4 variants highlights the efficiency of EMVO and FA in terms of precision and dimensionality reduction, respectively. Overall, this study suggests drawing attention to the choice of embedded metaheuristics in the refinement procedure, where powerful methods in exploration are recommended. Moreover, metaheuristics that risk form fast convergence are not advised.

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