the design of the kernel architecture
The design of mat foundations
Ngày tải lên :
16/10/2012, 10:43
... 119 pcf
Example 4.
Design the steel lying in the East-West direction of the mat shown below with external
dimensions of 42 feet by 74 feet. The columns are all 15”by 15”, the LF = 1.6, f
c
’ ... being designed for a small office building with a total live load of 250 kips
and dead load of 500 kips. Find: (a) the depth D
f
for a fully compensated foundation, (b) the
depth D
f
if a soft ... in the x and y values,
which these values are found by using the x-y coordinate system off the mat foundation.
Determine the average soil reaction.
(92.34(78.8)69.8)
79
6
avg
qpsf
++
∆==
Therefore,...
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DNA by Design. Stephen Meyer and the Return of the God Hypothesis
Ngày tải lên :
01/11/2013, 07:20
... reasserting the necessity of the God
hypothesis.
12
Meyer argues that it was a mistake for natural theologians to retreat in
the face of science to the idea that design was located in the laws of nature,
rather ... explanations of some phe-
nomenon, then design wins by default as the sole remaining option.
But intentional design, in the ordinary sense of the term that is rele-
vant here, is orthogonal to the other ... open the door to divine
design.
The same sort of problem arises for the hypothesis of divine design if one
tries to assess its explanatory virtues. For instance, is theism indeed a simpler
hypothesis...
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Tài liệu The Design of Rolling Bearing Mountings P2 ppt
Ngày tải lên :
25/12/2013, 05:17
... accuracy of the workpiece mainly depend
on the axial rigidity of the spindle headstock and of the
rotary table. Therefore, the rigidity of the thrust bear-
ings is especially important. To increase the ... on the roll-
ing bearing aspects of the applications. The operation
of the machine allows conclusions to be drawn about
the operating conditions which dictate the bearing
type and design, the ... conditions as the expansion of the rotating parts
due to the effects of heat and centrifugal force do not
cause jamming of the outer rings in the housing.
Lubrication, sealing
The bearings are...
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Tài liệu The Design of Rolling Bearing Mountings P1 pptx
Ngày tải lên :
25/12/2013, 05:17
... kN;
the bearings are vertically arranged.
Bearing selection
The axial load of 130 kN is made up of the weight of
the rotor and the two variable top and bottom fan im-
pellers as well as the thrust ... clearance
Due to the tight fits, the inner ring of the bearing is
expanded and the outer ring with the roller-and-cage
assembly is contracted. Thus the radial clearance of the
bearing is reduced ... V1.
Bearing selection
The selection of the bearings is primarily based on the
main thrust, which is directed downwards. It is made
up of the weight of the rotor and and pump impeller
(4 kN), the pump thrust...
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Tài liệu The Design Of Manufacturing Systems P2 docx
Ngày tải lên :
19/01/2014, 18:20
...
Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of
the manufacturing technology. The designer then tries to find out if the design can be ... beforehand, then the best configuration
of the spindles for the parallel machine tool can be deduced. The best configuration of the spindles could
be based on the types and number of features present on the ... that the designer can easily interact with the
system.
Ranking of Redesign Alternatives
Another area requiring research attention in the context of generation of redesign solutions (design
advisor)...
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Tài liệu The Design Of Manufacturing Systems P1 pptx
Ngày tải lên :
19/01/2014, 18:20
... know the prices of chemicals in the various markets and the operating
costs of processes, the problem is then to decide the operating level of each process and amount of each
chemical in the list ... assumed that the production rate (r
ijt
) of the main product j of
each such scheme is proportional to the capacity of the plant.
where M
i
denotes the index set of main products of the alternative ... limited.
The case of shut down of an existing plant results when the variable W
it
takes a value of zero after a
given time period t. The economics of shut down can be modeled by the inclusion of the...
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Tài liệu The Design of Rolling Bearing Mountings P1 docx
Ngày tải lên :
23/01/2014, 04:20
... selection
The axial load of 130 kN is made up of the weight of
the rotor and the two variable top and bottom fan im-
pellers as well as the thrust of these fan impellers. They
are supported by the ...
adjustment is, therefore, not required.
Machining of the housing bore is simplified in that the
nominal outside diameters of the radial and thrust
bearings are the same. The O.D. tolerance of the angu-
lar ... V1.
Bearing selection
The selection of the bearings is primarily based on the
main thrust, which is directed downwards. It is made
up of the weight of the rotor and and pump impeller
(4 kN), the pump thrust...
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Tài liệu The Design of Rolling Bearing Mountings P2 pdf
Ngày tải lên :
23/01/2014, 04:20
... reason the brief texts concentrate on the roll-
ing bearing aspects of the applications. The operation
of the machine allows conclusions to be drawn about
the operating conditions which dictate the ... roughening of the surfaces
(increased running noise).
Bearing dimensioning
The size of the bearings is dictated by the shaft diame-
ter, which in turn is based on the anticipated vibra-
tions. The bearing ... grinding the bearing inner rings and the roll body
to finished size in one setting at a roll surface tempera-
ture of 220 °C .The inner rings and the roll body can
be ground together due to the fact...
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Tài liệu The Theory of the Design of Experiments doc
Ngày tải lên :
25/01/2014, 08:20
... individuals. The
lack of a unified “theory of ecology” and
the existence instead of a fragmented
body of “ecological theory”is evidenced
by the relative use of these two terms in
the scientific ... alternative to
the “theory of evolution”for explaining
the diversity of life on Earth and the ex-
istence of millions of different species.
Opponents of this view hold that ID is
not a scientific theory ... understanding of
the t
erm “scientific theory,”it is anachro-
nistic to use the phrase “theory of evo-
lution.”What constitutes a self-contained
scientific theory is a subject of much
philosophical...
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Tài liệu The Design Of Manufacturing Systems P2 pptx
Ngày tải lên :
25/01/2014, 13:20
... beforehand, then the best configuration
of the spindles for the parallel machine tool can be deduced. The best configuration of the spindles could
be based on the types and number of features present on the ...
Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of
the manufacturing technology. The designer then tries to find out if the design can be ... ways of simplifying CSG models for their potential use in feature recognition.
• Restrict the domain of the model by restricting the range of primitives and/or of the orientations
that they may...
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Tài liệu The Design Of Manufacturing Systems P1 docx
Ngày tải lên :
25/01/2014, 13:20
... know the prices of chemicals in the various markets and the operating
costs of processes, the problem is then to decide the operating level of each process and amount of each
chemical in the list ... dispersion of the solution
vectors, the approach to restrict the dispersion of the random recourse costs can also be considered.
Because the variability of the recourse costs is a measure of its ... ,…,
are the extreme rays of C, then the projection of P onto the space of x is given by: proj
x
(P) ϭ {x : Ax Յ
b, h ϭ 1,…,H; x ʦ X}. This expression requires finding the extreme rays of the polyhedral...
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Chapter 15 introduction to the design of electric machinery
Ngày tải lên :
16/02/2014, 18:55
... between the tooth. Thus
w r
stR st st
=
θ
(15.2-31)
The width of slot between the base of the tips is taken as the average of the distance
of the chord length of the inner corners of the tooth ... l
eo
is the end winding offset, which is the amount of overhang of the end winding
between the end of the stator stack and the end winding bundle. The end winding offset
is a function of the manufacturing ... addition to the computing the dependent geometrical variables, there are several
other quantities of interest that will prove useful in the design of the machine. The first
of these is the area of a...
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Tài liệu The Design of Prestressed Concrete Bridges ppt
Ngày tải lên :
18/02/2014, 18:20
... Construction of arches 512
12 The nature of design
His choice will be informed by other aspects of the project, for instance:
the number of similar columns in the project;
the range of heights of such ... is one of only two major bridges designed by Lutyens.
1
The nature of design
1.1 Design and analysis
The origin of the word design is the Latin ‘designare’, to draw. In classical times, the
stability ... concerned with the strength of materials and the theory of
structures;
the specifi ed design life of the bridge and the maintenance regime;
the various regulations that must be complied with;
the economic...
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Tài liệu SCRIBE: The design of a large-scale event notification infrastructure? doc
Ngày tải lên :
19/02/2014, 18:20
... alreadyforwarders
for topic
. The subscription of
node
causes the other two
nodes along the route to become
forwarders for the topic, and causes
them to add the preceding node in
the route to their children ... PUBLISH; the roles of these messages are
described in the next sections.
The following variables are used in the pseudocode: topics is the set of topics that
the local node is aware of, msg.source ... locate the rendez-vous point of a topic. If
the publisher is aware of the rendez-vous point’s IP address then the
PUBLISH message
can be sent straight to the node. If the publisher does not know the...
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