scholarly journals Computational Analysis of the Rotating Cylinder Embedment onto Flat Plate

CFD Letters ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 133-149
Author(s):  
Hidayatullah Mohammad Ali ◽  
Azmin Shakrine Mohd Rafie ◽  
Syaril Azrad Md Ali ◽  
Ezanee Gires
Keyword(s):  
Flat Plate ◽  
Flow Analysis ◽  
Rotating Cylinder ◽  
Past Century ◽  
Foundation Design ◽  
The Past ◽  
Aerodynamic Properties ◽  
Magnus Effect ◽  
Two Dimensional Flow ◽  
The One

The Magnus effect and its evolution have greatly affected the aerospace industry over the past century to date. Nevertheless, cylinder embedment onto a flat plate offers a new discovery that is yet to be investigated, specifically whether the concept could enhance the aerodynamic properties of the flat plate following the Magnus effect momentum injection. Over the past decade, the use of a rotating cylinder on an aerofoil has existed from past researches studies where the embedment has significantly increased in its aerodynamic performance better than the one without Magnus application. However, it would be hard to achieve experimental-wise as an accurate measurement and fabrication would be needed to have the same resulting effects. Here, most of the researchers would not focus deeply on the placement of the cylinder as this may increase their fabrication and testing complications. Therefore, the current study delineates the use of flat plate as the foundation design to encounter the arise matter by reducing its complication yet easy to manufacture experimentally. In this work, the model output was evaluated by using ANSYS WORKBENCH 2019 software to simulate two-dimensional flow analysis for the rotational velocities of 500 RPM and 1000 RPM, respectively. This was done for different Reynolds numbers ranging from 4.56E+05 to 2.74E+06 which implicitly implied with free stream velocities varying from 5 m/s to 30 m/s for different angles of attack between 0 to 20 degrees. Prior to developing the best model embedment, the mesh independency test was validated with an error of less than 1%. The study resulted in a remarkable trend that was noticeably up to 32% (500 RPM) and 76% (1000 RPM) better in compared to the one without momentum injection. Similarly, the high recovery led to a tremendously lower of 51% (500 RPM) and 99% (1000 RPM), respectively. In sum, these findings generated a stall angle delay of up to 26% (500 RPM) and 78% (1000 RPM) accordingly.

When Cultural Evolution Calls for Translation Revolution

2018 ◽  
pp. 161-178
Author(s):  
Vanessa Lopes Lourenço Hanes
Keyword(s):  
Cultural Evolution ◽  
Written Language ◽  
The Other ◽  
Past Century ◽  
Linguistic Identity ◽  
The Past ◽  
Publishing Houses ◽  
The One

Given the massive changes that Brazil has undergone in the past century, particularly in distancing itself linguistically from its former colonizer, this study is an attempt to determine the role of translation in the country's cultural evolution. Translational approaches have developed along opposing poles: on the one hand, a strong resistance to incorporating orally-driven alterations in the written language, while on the other, a slow, halting movement toward convergence of the two, and both approaches are charged with political and ideological intentionality. Publishing houses, editors and translators are gatekeepers and agents whose activities provide a glimpse into the mechanism of national linguistic identity, either contributing to or resisting the myth of a homogenized Portuguese language.

THE CANVAS AND THE COLOR: TOCQUEVILLE'S “PHILOSOPHICAL HISTORY” AND WHY IT MATTERS NOW

2006 ◽  
Vol 3 (3) ◽  
pp. 495-521 ◽  
Author(s):  
JAMES T. KLOPPENBERG
Keyword(s):  
The Other ◽  
Alexis De Tocqueville ◽  
Past Century ◽  
French History ◽  
French Politics ◽  
Best Friend ◽  
The Past ◽  
Comprehensive Account ◽  
The One ◽  
1848 Revolution

In December of 1850, exhausted by his role in French politics and recuperating from tuberculosis, Alexis de Tocqueville retreated to the Amalfi coast to think, write, and recover. To his best friend Louis de Kergolay, Tocqueville wrote about completing his memoir on the 1848 revolution and his plans to undertake a comprehensive account of French history that would explain the turmoil of the past century. The appeal was powerful, he explained to Kergolay, but “the difficulties are immense. The one that most troubles my mind comes from the mixture of history properly so called with historical philosophy. I still do not see how to mix these two things,” he conceded, “and yet, they must be mixed, for one could say that the first is the canvas and the second the color, and that it is necessary to have both at the same time in order to do the picture.” Tocqueville feared “that the one is harmful to the other, and that I lack the infinite art that would be necessary in order to choose properly the facts that must, so to speak, support the ideas.

scholarly journals The Religious Cults of the Albanian Faith during the Early 20th Century

2015 ◽  
Vol 4 (1) ◽  
pp. 147
Author(s):  
Benita Stavre ◽  
Erinda Papa
Keyword(s):  
Religious Faith ◽  
American People ◽  
Past Century ◽  
The Past ◽  
The People ◽  
Reliable Source ◽  
Life Context ◽  
The One ◽  
Source Of Information ◽  
The Way

During the early twentieth century, Albania was visited by various British and American people who were eager to know about the curious features of this little country’s particular life. They had heard of it in their homeland and chose to trace a reality that was much different from the one they were used to. The materials they wrote and published, constitute a reliable source of information, whose analysis from the modern perception draws a picture of the life almost a century ago. This paper aims to describe the particular context of the relation that Albanian people had created with God and the way the religious life was shaped through the traditional rituals of the country. A few of the arguments that will be analyzed are: the way the religious faith was integrated in the daily activities, the religious tolerance in the state policies and the way it was reflected in the life context, religious attitudes due to the historical development of the past centuries, the influence of the new entries of the ‘30s, the restricted intercourse of the northern Albanians due to their geographical isolation and the pagan rituals and symbols of the traditional ceremonies. The Albanian way of worshiping seems to have been shaped by life pragmatism, social equilibrium and personal honesty. Nothing can describe it better than the people who lived with it for some time and were able to define it from a different mental perception. The description may supply modern insight of the particular attitude that this country reflected in early in the past century.

scholarly journals Medicine, neurosciences and interdisciplinarity

2017 ◽  
Vol 1 (1) ◽  
pp. 2514183X1771411
Author(s):  
Maurice Campagna
Keyword(s):  
Artificial Intelligence ◽  
Quantitative Description ◽  
Scientific Progress ◽  
Past Century ◽  
Brain Organization ◽  
Aging Society ◽  
The Past ◽  
Brain Sciences ◽  
The World ◽  
The One

In terms of fundamental, universal scientific progress in the area of “hard sciences,” the past century was the one of relativity, quantum mechanics, and solid state/surface physics, whereas the 21st century prospects a focus on genomics/life/brain sciences, computer sciences/artificial intelligence, climate, and extraplanetary research. Among these, neurosciences represent a meta-plane, where new tools and insights provide key contributions to revolutionizing our current understandings. Increasingly, we move toward a quantitative description of various neural phenomena as well as to a new understanding of the nervous system and brain organization/functioning in particular. All this is strongly influencing the way we see the world. From this process, finally yet importantly, we derive large benefits for the cure of diseases as well as the management of an aging society.

scholarly journals On the question of the innervation of pupil movements

2021 ◽  
Vol XII (2) ◽  
pp. 142-196
Author(s):  
V. V. Chirkovsky
Keyword(s):  
The Other ◽  
Past Century ◽  
The Past ◽  
Solid Works ◽  
To Come ◽  
The One

Any researcher on the question of the innervation of the movements of the iris is involuntarily amazed, on the one hand, by the amazing abundance of works on this branch of physiology and, at the same time, solid works, produced by outstanding scientists, and on the other, not less than the amazing diversity of the prevailing views, even prevailing in the foundations of the study of pupillary movements. The last ten years of the past century have been the period of especially lively debates in literature on the most significant issues of this department and, it seems, will not be exaggerated, if we say that not one side of the question about the innervations of the movements of the pupil has not been left again. But from the review of these numerous works, it is difficult to come to no less than a definite, immutable conclusion on any issue.

Investigation of the Possibilities of Rotating Cylinders as an Auxiliary Lift Device

1964 ◽  
Vol 68 (647) ◽  
pp. 777-780
Author(s):  
J. E. Chacksfield
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Experimental Studies ◽  
Rotating Cylinder ◽  
Test Results ◽  
Major Research ◽  
Drag Coefficients ◽  
Magnus Effect ◽  
The One ◽  
Gains And Losses

The following is an attempt to show the gains and losses achieved when a rotating cylinder is used to create additional lift during the take-off and landing of an aircraft.A hundred-year old theory lies behind the results (the “Magnus” effect), which, up to the present day has not been put to practical use in flight for increasing CL. Many proposals and tentative designs have been studied at major Research Establishments, notably A.V.A. Gottingen and the RAE but experimental studies on aircraft converted for the purpose have yet to be made.Limited test results show that the CL on a rotating cylinder can be as great as 15 providing that sufficient care is taken to approach infinite aspect ratio by means of end-plates on a high aspect ratio cylinder. The one great disadvantage with the cylinder is the high drag coefficients produced. However, there seems no reason why a fairing should not be placed in the wake to reduce the drag to that corresponding to a blunt-nosed thick aerofoil section.

Classification of Project Management Mathematical Models

2015 ◽  
Vol 4 (1) ◽  
pp. 13-19 ◽  
Author(s):  
������� ◽  
Igor Tsarkov
Keyword(s):  
Project Management ◽  
Mathematical Models ◽  
Past Century ◽  
New Classification ◽  
The Past ◽  
The One ◽  
Budget Restriction

Mathematical models in Project Management became one of the key elements that in the 50th of the past century had formed a new branch of science � Project management. Since then there have been developed a large number of mathematical models adapted for solving partial problems. Unfortunately no universal practical models, which allow managing projects in conditions of resource or budget restriction, have been invented. Therefore the classification of different mathematical models is the pressing problem which could bring to order all these models from the one hand and reveal the most perspective directions of further research. In this paper existing classifications are analyzed and a new classification is proposed.

scholarly journals The Image of The Second World War as a Factor in the Formation of Contemporary European Identity

2020 ◽  
pp. 217-226
Author(s):  
Yuri Denisov ◽  
Keyword(s):  
Second World War ◽  
Global Network ◽  
Steady Increase ◽  
European Identity ◽  
Past Century ◽  
World War ◽  
The Past ◽  
The Common ◽  
The One ◽  
Second World

The image of the Second world war is one of the most significant images of the past for the European identity. The purpose of this study is to analyze its potential for the formation of the modern European identity as a supranational construct. The results of the study showed the ambivalent nature of this potential. On the one hand, the image of the Second world war retains a sufficiently powerful unifying impulse. It is determined by the uniting role of the colossal tragedy, the common misfortune that befell Europe in the middle of the past century, its integrational significance for the beginning of joint efforts to build a single European community in order to prevent the recurrence of these events. Today, this momentum is realized through the preservation of European memory, the institutionalization of anniversaries, the broadcast of the memory of the war in the process of intergenerational communication in the functioning of the institutions of education and cultural environment as a whole, the articulation of traumatic memories in the political discourse. On the other hand, the image of World War Two has a serious deconsolidating charge for the common European identity. It is caused by contradictions in the European collective memory, which are more and more clearly manifested in the conditions of modern political conjuncture. The new technological revolution that has engulfed Europe, accompanied by a steady shift of communication practices into cyberspace and the emergence of the phenomenon of cyber-memory, changes the mechanisms of representation and reception of the image of the Second World War. In the presence of the Global Network, we observe a steady increase of not only the arsenal of means for the representation and visualization of the image of the past, making it more interactive, multimodal, multifaceted and simplified, but also of the number of actors of memory politics, taking part in the formation of the European identity, or rather — an unlimited set of identities.

Yahya Kemal and Nizar Qabbani: Two Poet-Diplomats in Spain and “Andalus” in their Poems

CLEaR ◽  
2017 ◽  
Vol 4 (2) ◽  
pp. 20-33
Author(s):  
İhsan Doğru
Keyword(s):  
The Other ◽  
Past Century ◽  
Coffee Shop ◽  
The Past ◽  
Other Hand ◽  
Traditional Dance ◽  
The People ◽  
The One ◽  
Almost All ◽  
The City

Abstract Yahya Kemal and Nizar Qabbani were two poets who served as diplomats in Spain in the past century on behalf of the governments of Turkey and Syria. Yahya Kemal wrote two poems about Spain, “Dance in Andalusia “ and “Coffee Shop in Madrid”. “Dance in Andalusia,” a poem written about the Flamenco dance, has become very famous. In this poem, he described the traditional dance of the Spanish people and emphasized the place of this dance in their lives and the fun-loving lives of the people of Spain. In almost all of the poems which Nizar Qabbani wrote about Spain, on the other hand, a feeling of sadness rather than joy prevails. He gives a deep sigh in his poems as he regards Andalusia as the one-time land of his ancestors. His most important poem with respect to Spain is the poem entitled “Granada”. This poem is considered to be one of the most significant odes in the Arab literature describing Granada, the pearl of Andalusia, Arab influences there, the Alhambra palace and the sadness felt due to the loss of the city by Arabs. This study analyzes the two most important poems written by Yahya Kemal and Nizar Qabbani concerning Spain, namely “Dance in Andalusia” and “Granada”. Whenever it is deemed appropriate, other poems of the two poets regarding Spain will be dwelt upon and what kind of an influence Andalusia left in their emotional world will be revealed.

Regulating digital platforms as the new network industries

2021 ◽  
pp. 178359172110287
Author(s):  
Juan Montero ◽  
Matthias Finger
Keyword(s):  
Network Effects ◽  
Past Century ◽  
Network Industries ◽  
The European Union ◽  
Barriers To Entry ◽  
Digital Platforms ◽  
The Past ◽  
Regulatory Measures ◽  
Political Intervention ◽  
The One

The most solid framework to both analyze and regulate digital platforms is the one which has developed over the past century for the conceptualization and the regulation of the traditional network industries such as telecoms, transport and energy. Digital platforms in multi-sided markets can be considered the new network industries, notably due to the relevance of direct, indirect and algorithmic network effects. As a result, platforms display features which are similar to all industries where network effects are key, namely concentration, market power and subsequently political intervention. Regulatory measures that have already been tested in the traditional network industries can be exported to the new network industries, including regulation to promote competition by reducing barriers to entry, regulation to promote interoperability and structural remedies along with public service obligations imposed on platforms. Examples of this approach can be identified in different initiatives around the world, with the European Union in the lead.

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