Pythagorean means: thermodynamic examples

Author(s):  
Joaquim M S Anacleto

Abstract We present the definitions of the Pythagorean means – arithmetic, geometric, and harmonic – and discuss some examples from thermodynamics where these means are found. This paper has a pedagogical character and highlights the close connection between mathematics and physics.

Author(s):  
W. Bernard

In comparison to many other fields of ultrastructural research in Cell Biology, the successful exploration of genes and gene activity with the electron microscope in higher organisms is a late conquest. Nucleic acid molecules of Prokaryotes could be successfully visualized already since the early sixties, thanks to the Kleinschmidt spreading technique - and much basic information was obtained concerning the shape, length, molecular weight of viral, mitochondrial and chloroplast nucleic acid. Later, additonal methods revealed denaturation profiles, distinction between single and double strandedness and the use of heteroduplexes-led to gene mapping of relatively simple systems carried out in close connection with other methods of molecular genetics.


2019 ◽  
Author(s):  
Matheus Pereira Lobo

The purpose of this paper is to introduce a new type of microarticle, considered for publishing in the Open Journal of Mathematics and Physics (OJMP), dubbed "Mathematical Insight."


Author(s):  
A.M. Abidulin ◽  
I.A. Shirkina

Аннотация Статья посвящена анализу идеологических концепций в Османской империи во второй половине XIX - начале XX века. Изучение генезиса терминов османизм и панисламизм позволяет нам отметить их западное происхождение и трактовать их в качестве идеологии сохранения империи и исламского единства, а также как стремление к культурному объединению всех мусульман, признающих духовную власть османского султана. В рамках изучаемого периода панисламизм рассматривается в тесной связи с предшествующей ему идеологической концепцией османизма. Показаны векторы, в которых панисламизм использовался как инструмент государственной политики в период правления султанаАбдул-Хамида II.Нами также исследуется процесс трансформации идеологических концепций позднего периода Османской империи. Показано, что концепции османизма и панисламизма соответствовали требованиям своего времени, учитывая политические и демографические обстоятельства, при этом не взаимозаменяя, а сосуществуя в тесной связи друг с другом.Abstract The article is devoted to the analysis of ideological concepts in the Ottoman Empire in the second half of the XIX early XX centuries. Studying the genesis of the terms Ottomanism and Pan-Islamism allows us to note their Western origin and treat them as an ideology of preserving the empire and Islamic unity, as well as a desire for the cultural unification of all Muslims who recognize the spiritual power of the Ottoman Sultan. Within the framework of the period under study, pan-Islamism is considered in close connection with the ideological concept of Ottomanism preceding it. The vectors in which pan-Islamism was used as an instrument of state policy during the reign of Sultan Abdul-Hamid II are shown. We also study the process of transformation of ideological concepts of the late period of the Ottoman Empire. It is shown that the concepts of Ottomanism and Pan-Islamism met the requirements of their time, given the political and demographic circumstances, while not interchangeably, but coexisting in close connection with each other.


2005 ◽  
Vol 149-150 ◽  
pp. 1-17 ◽  
Author(s):  
Michael Clyne ◽  
Sue Fernandez

This paper explores ‘period of residence’ as a factor in the maintenance of an immigrant language, based on the example of Hungarian in Australia. Hungarian speakers arrived in Australia from several different source countries including Hungary, Romania (Transylvania), and areas of the formers Yugoslavia (Vojvodina) and Czechoslovakia (Slovakia). The distinct waves of Hungarian speaking migrants to Australia - 1938-40; 1947-54; 1956-57; 1960s, 70s and 80s; and 1990s - reflect the close connection between sociopolitical events and immigrant source countries for speakers of Hungarian. The data for the study comprises interviews with 22 families, encompassing all vintages and source countries noted above, supplemented by two focus groups. The study demonstrates that ‘period of residence’interacts with a number of other factors, notably country of origin, reasons for migration, and the prevailing attitudes and policies towards the reception and integration of immigrants in the host country at the time. It highlights the contradictory and ambivalent effects on language maintenance of situations of multiple identity and individual responses to conflict situations.


2020 ◽  
Author(s):  
Daniel Rosenberg

Abstract Paul Valéry’s interest in the life sciences is an important yet little-studied aspect of his work. Although Valéry was known primarily as a reader of mathematics and physics, his fascination with the life sciences has often been ignored or regarded as mere curiosity. This article examines Valéry’s writing on the subject of biology by focusing on the unique status he accords to the notion of life. In both his theoretical and poetic writings, Valéry addresses the notion of life as a category endowed with distinct ontological attributes — as a phenomenon that encompasses a distinct type of order. Life, as an independent force, is capable of resisting and even reversing the principle of entropy, which Valéry regards as a universal tendency towards degradation and dispersion that affects all inanimate matter. Valéry’s thought thus exhibits a complicated yet clear affinity with the intellectual tradition known as vitalism. The article discusses this affinity by analysing the presence of vitalist ideas and imagery in Valéry’s corpus, giving special attention to his most expressly ‘biological’ work, the essay ‘L’Homme et la coquille’ (‘The Man and the Seashell’).


2021 ◽  
Vol 64 (3) ◽  
pp. 15-17
Author(s):  
Don Monroe

A theorem about computations that exploit quantum mechanics challenges longstanding ideas in mathematics and physics.


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