scholarly journals Mukalla, Hadramawt

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Iain Walker
Keyword(s):  
Principal Points

Mukalla, Hadramawt, one of two principal points of departure for emigrants and today capital of the governorate in Yemen. Taken by Iain Walker in c.2006.

Analytical Modelling of the Dynamics of the Four-Bar Mechanism: A Comparison of Some Methods

2018 ◽  
Author(s):  
J. P. Meijaard ◽  
V. van der Wijk
Keyword(s):  
Virtual Work ◽  
Equations Of Motion ◽  
Differential Algebraic Equations ◽  
Force Balance ◽  
Dynamic Force ◽  
Algebraic Equations ◽  
Principle Of Virtual Work ◽  
Principal Vector ◽  
Reaction Forces ◽  
Principal Points

Some thoughts about different ways of formulating the equations of motion of a four-bar mechanism are communicated. Four analytic methods to derive the equations of motion are compared. In the first method, Lagrange’s equations in the traditional form are used, and in a second method, the principle of virtual work is used, which leads to equivalent equations. In the third method, the loop is opened, principal points and a principal vector linkage are introduced, and the equations are formulated in terms of these principal vectors, which leads, with the introduced reaction forces, to a system of differential-algebraic equations. In the fourth method, equivalent masses are introduced, which leads to a simpler system of principal points and principal vectors. By considering the links as pseudorigid bodies that can have a uniform planar dilatation, a compact form of the equations of motion is obtained. The conditions for dynamic force balance become almost trivial. Also the equations for the resulting reaction moment are considered for all four methods.

The State of the Imperial Treasury at the Death of Domitian.

1935 ◽  
Vol 25 (2) ◽  
pp. 150-162 ◽  
Author(s):  
C. H. V. Sutherland
Keyword(s):  
The State ◽  
Financial Policy ◽  
Principal Points

In volume xx of the Journal (pp. 55–70) there appeared an article by Mr. Syme on the imperial finances under Domitian, Nerva and Trajan. Briefly, his object was to shift on to the shoulders of Nerva the financial embarrassment often attributed to the reign of Domitian, and also to strive for a fairer recognition in general of Domitian's qualities. The following notes deal with some of the principal points at issue, and attempt a reconsideration of the financial policy of the period.

scholarly journals The indigenous languages of Sicily

2020 ◽  
pp. 531-551
Author(s):  
Jonathan Prag
Keyword(s):  
Recent Work ◽  
Indigenous Languages ◽  
Cultural Boundaries ◽  
Key Points ◽  
Principal Points ◽  
Systematic Collection

This paper provides a brief synthesis of the evidence and principal points of discussion concerning the indigenous languages of ancient Sicily. Traditionally, three indigenous languages (Sikel, Sikan, and Elymian) are identified in use in Sicily in the period between the seventh and fourth centuries BCE. The evidence is extremely fragmentary, and its study is additionally complicated by the absence of up-to-date systematic collection of the material. The evidence is listed and the key points of linguistic and graphic discussion are presented. The traditional separation of Sikel and Sikan had already been challenged in existing scholarship; this paper suggests, in line with recent work, that the existing assumptions about the separation of Elymian also deserve to be challenged, and that the traditional assumptions about material and/or ethnic cultural boundaries on the island are potentially misleading.

scholarly journals On the mesodermic origin and the fate of the so-called mesectoderm in petromyzon

1915 ◽  
Vol 88 (606) ◽  
pp. 457-475 ◽  
Keyword(s):  
Present Note ◽  
Scientific Journal ◽  
The Other ◽  
Great War ◽  
Long Time ◽  
Epithelial Structure ◽  
Principal Points ◽  
The Great War ◽  
Branchial Region

About 20 years ago v. Kupffer (85) described in the embryos of Petromyzon an epithelial structure extending, between the ectoderm and the somatic plate of the mesoderm, from the head to the posterior boundary of the branchial region, and described it under the name of the neurodermis; subsequently, he bestowed on it the name branchiodermis. Seventeen years later the same structure was again discovered by Koltzoff (02), who identified it with the mesectoderm which was described by Miss Piatt (94) in Necturus embryos. Subsequently, so far as Petromyzon is concerned, nothing was published until last year, when a paper by Sehalk (13) appeared, although the corresponding layer of cells was described by A. Dohrn (02) in Selachii and by Brauer (04) in Gymnophiona. For a long time the origin and fate of the layer in question engaged my attention. Last summer I was able to re-examine my sections and to confirm observations which I had previously published in a paper entitled “Die Bildungsweise und erste Differenzierung des Mesoderms beim Neunauge ( Lampetra mitsukurii , Hatta),” in which, the origin and differentiation of the so-called mesectoderm are described and illustrated by a series of microphotographs. To my regret the paper, which was ready for press when the great war broke out, could not be sent to the editor of a certain scientific journal in Belgium, who had promised to publish it in his journal. The present note is an attempt to communicate some of the principal points of that paper which relate to the mesectoderm. The other organs dealt with in the above-mentioned paper have already been described in preliminary notes or in my previous papers.

Representing a Large Collection of Curves: A Case for Principal Points

1993 ◽  
Vol 47 (4) ◽  
pp. 304-306 ◽  
Author(s):  
Bernard D. Flury ◽  
Thaddeus Tarpey
Keyword(s):  
Large Collection ◽  
Principal Points

Max Beloff 1913–1999

2003 ◽  
Author(s):  
Nevil Johnson
Keyword(s):  
Historical Analysis ◽  
Public Affairs ◽  
Political Scientist ◽  
Principal Points ◽  
Fair Assessment

Max Beloff was both a historian and political scientist, which makes a fair assessment of his work on both fields difficult. This is in part because whilst much of what he wrote was history, much of it was also what might be called ‘public affairs from an historical standpoint’. Inevitably this meant that what was intended to be straightforward historical analysis sometimes ran the risk of being too heavily influenced by current preoccupations arising in the sphere of public affairs. Yet this idea that the historian should be concerned with public affairs was very much to the fore in the 1930s when Beloff was at Oxford, and to some extent his ideal became and remained that of the scholar-historian who brings his knowledge to bear on the problems and controversies of his own times. What stands out in all Beloff's writing — historical or otherwise — is his fluency, clarity of presentation, and cogency in getting across the principal points he wants to make.

A Defence of Mill's Qualitative Hedonism

Philosophy ◽  
1972 ◽  
Vol 47 (180) ◽  
pp. 140-151 ◽  
Author(s):  
Rex Martin
Keyword(s):  
P 16 ◽  
Principal Points ◽  
Rule Out

In his well known proposition that pleasures differ qualitatively, Mill seems to be arguing three principal points. (1) ‘Mental’ pleasures as a kind are intrinsically ‘more desirable and more valuable’ than ‘bodily pleasures’ (p. 12). (2) This estimation of pleasure, Mill says, is such as to rule out the claim that it ‘should be supposed to depend on quantity alone.’ Indeed, he continued, the ‘superiority in quality’ might be ‘so far outweighing quantity as to render it, in comparison, of small account’ (p. 12). (3) The ‘test of quality and the rule for measuring it against quantity,’ Mill says, is ‘the preference’ of experienced judges (p. 16). ‘[T]he judgment of those who are qualified by knowledge of both, or, if they differ, that of the majority among them, must be admitted as final’ (p. 15).

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