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Register a new userMathematics and Computer Science, Deep Interaction (An Historical Study)
الرياضيات و علم الحاسوب، تفاعل وثيق (دراسة تاريخية)
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Damascus University مقالة
Publication date
1999
fields
Mathematics
and research's language is
العربية
Authors
قاسم محمد الحسن( باحث )
Created by
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نحاول في هذه الورقة أن نقدم لمحة تاريخية مختصرة عن دور الرياضيات في تقدم علم الحاسب، و عن دور الحاسب في إثراء العلوم الرياضية، و حل كثير من المعضلات التي عرفتها الرياضيات منذ القدم. و قد جاء هذا التفاعل بينهما كحافز ساهم في تطوير كل منهما للآخر.
An attempt has been made to present a brief historical highlight of the role that mathematics played in the advancement of computer science, and the role of the latter in the enrichment of mathematical sciences and the solution of well-known problems that posed a challenge for centuries. This interaction has been a motive that contributed to the advancement of both branches of knowledge.
References used
Fabrizio Luccio, et al, (Eds) Mathematics of Computing , UNESCO, CISM, Udine, Italy1993
R.M. Karp, Reducibility among combinatorial problems. In R.E. Miller and J.W. Tatcher (Eds), Complexity of Computer Computations, Plenum Press, NY1972
J. F. Traub, Numerical mathematics and computer science, Technical report, Computer Science Department, Carnegie–Mellon University, Pittsburgh, PA1972
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The deep-well pumps are practically and widely used to pump water up
from wells. These pumps are driven by squirrel-cage induction motors
where the pump is directly connected with the induction motor it drives.
They form a pump-motor set or a deep
-well set.
Economioally, the cost of digging a well proportionates with the diameter
of the hole opening.
This diameter is related to the deep-well set dimensions. Whenever the
dimensions of the deep-well set are small, the cost of digging a hole will
be notably less.
From here, in this research we shall test the possibility of desiging a
deep-well induction motor with a voltage of f =150 Hz frequency in a
small size. and in trifold speed of the induction motor which has same
power and functions as the motor with a voltage of f = 50 Hz frequency
and where the essential parameters of the motor aren’t worse than the
motor with f = 50 Hz Frequency.
Machine developing aimsto improve its velocity, capability and production,this is
accompanied by increase of Mechanical side effects and the dynamical loads between the
Machines elements and parts, that may conduct to rise the Mechanical vibrations
and may
cause a lot of damage in these machines, and cause negative effects on the
environmentaround these machines, the study of Mechanical vibrations has a significant
importance for engineering and technical students, to have knowledge of Mechanical
vibrations that may arise in the machines under design process, or to study the mechanical
vibrations resulting in the machines under use to isolate these vibrations and attenuate of
its negative effects, for that we introduced an simulation program to show and illustrate a
method to simulate some mathematical models representing some of possible types of
vibrations, and to determine the most important parameters that describe the different
vibrations motions, we choose an suitable programing language to merge this simulated
models with an illustration and learning texts and drawings and animations in one
executable application, this application show the models and the results in simple and very
clear manner, and show the results in high resolution comparing with other programing
languages.
The aim of this study is to investigate the effectiveness of using
computer in teaching histogram ( bar charts, creating a chart,
Coordinates) for key stage four pupils in Homs city. Specifically, the
study aimed to answer two questions:
Is there
statically significant differences between students
scores in the direct test of histogram chapter because of using
computer in teaching?
Is there statically significant differences between students
scores in the later test of histogram chapter because of using
computer in teaching?
This paper aims at revealing the image of Joan of Arc as it
appeared in two well-known chronicles: Edward Hall's chronicles
and that of Raphael Holinshed, which are regarded as the basic
sources for her image in Shakespeare's play Henry VI Part 1.
This
paper then proceeds to show her image in a major French history
book, and in other literary works which can help us to understand
her personality as a female warrior who faces many changes by
reason of that role.
There are many views on the question of the logic and mechanisms of historical
development of human society; visions and answers vary, to the extent of total conflict
sometimes, on other issues that relate organically to the first question, perhaps
the most
prominent of which is the general picture of the historical evolution diagram, Sequentially
spherical stages, as well as the question of the so-called nation or the multiple nations that
alternately lead the ship of the evolution of human society in general. This is where the
sharp contrast between the two theories of the so-called equal evolution and the unequal
historical evolution as a problem from which the research begins and ends with emphasis
on the credibility of the last thesis and on highlighting a large and dangerous part of the
ideological manipulation and blindness of the first thesis. The latter, which is one of the
moss serious thesis of European orientalism and the pervasive wooden understanding of the
original thought of Marxist origin.
قوى الإنتاج
علاقات الإنتاج
التطور التاريخي اللامتكافئ
التطور التاريخي المتكافئ
بلدان الأطراف
بلدان المراكز
المركزية الأوروبية المزعومة
المعجزة الرأسمالية المزعومة
The unequalhistorical evolution
The equalhistorical evolution
The countries of the peripheral
The countries of the central
The alleged European centralism
The production of forces
The relations of production
المزيد..
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