the methods and materials of demography siegel
Báo cáo hóa học: " On the understanding and development of modern physical neurorehabilitation methods: robotics and non-invasive brain stimulation" pdf
Ngày tải lên :
19/06/2014, 08:20
... importantly, superiority of one
type of therapy over another could not be distinguished,
and therefore that the specific choice of therapy was diffi-
cult to justify over another type of treatment. This ... the benefit of various
types of physical therapies.
Evolution of physical rehabilitation
Historically, the management of stroke survivors involved
bed-rest and convalescence, reminiscent of the ... of
the 'magic' in the hands of the individual therapist might
be the ability to engage the patient and direct appropriate
attention to task.
It is apparent then, that focused guided rehabilitation
efforts,...
- 4
- 452
- 0
The Science and Technology of Materials in Automotive Engines Part 1 doc
Ngày tải lên :
10/08/2014, 12:21
... scavenging and exhaust porthole openings in the bore
wall. The upward and downward motion of the piston simultaneously opens
and closes these portholes. The air-fuel mixture then goes in or out of the
combustion ... field. The function of a
component determines the materials to be used and their characteristics. A
dialogue then takes place between the component designer and the materials
manufacturer. The designer, ... mixture of fuel and air fills the chamber.
2. Compression stroke: at the end of the intake stroke, both inlet and
exhaust valves are closed. The inertial action of the crankshaft in turn
lifts the...
- 25
- 433
- 0
The Science and Technology of Materials in Automotive Engines Part 3 doc
Ngày tải lên :
10/08/2014, 12:21
... solidification rate; the faster the
rate, the smaller the size and the finer the distribution. Figure 3.11 illustrates
the solidification process from the melt phase.
5
The atoms move randomly in
the melt ... excess heat from the engine. There are two types.
One is the open deck type (Fig. 2.41), and the other the closed deck type
(Figs 2.2, 2.27 and 2.40). The difference is in the shape of the coolant
passages ... between the
piston and the cylinder bore is too narrow, then the expanded piston will
touch the bore wall instantly. If the clearance is too wide, it will cause blow-
by of the combustion gas when the...
- 25
- 483
- 0
The Science and Technology of Materials in Automotive Engines Part 5 potx
Ngày tải lên :
10/08/2014, 12:21
... shape.
Piston
Expander
Ring
Gap
4.9
Expander installed at the back of the second ring of a two-stroke
engine. Cross cut view at the second ring groove.
The ring motion follows the uneven shape of the cylinder ... break the ring. A lack of lubrication also causes material failure.
The surface roughness of the ring groove and degree of groove and side
4.4
Piston rings for a two-stroke engine. The expander ... the outer surface of
the stacked rings. The shaft revolves and moves up and down with the rings.
During this motion, the rings are slightly inclined in the cylindrical whetstone
to generate the...
- 25
- 365
- 0
The Science and Technology of Materials in Automotive Engines Part 6 pps
Ngày tải lên :
10/08/2014, 12:21
... at the solidification point.
The solidification temperature of cast iron is proportional to the sum of
the percentage of carbon and one-third of the percentage of silicon. This is
known as the ... around the cam and valve lifter. The PV value is a product of the pressure (P) and relative slip speed (V) at
the running surface, evaluating the severity of lubrication and friction conditions. The ... higher the value, the more severe
the working conditions.
7. Withstand load
Science and technology of materials in automotive engines134
Figure 6.4 summarizes the functions of the valve. The shape...
- 25
- 384
- 0
The Science and Technology of Materials in Automotive Engines Part 7 pps
Ngày tải lên :
10/08/2014, 12:21
... turn of the coil spring vibrates
up and down at high frequency, independently of the motion of the entire
spring. It takes place when the natural frequency of the valve spring coincides
with the ... valve and valve spring due to their
inertial weights. To avoid this, the load of the valve spring should be set high.
The load applied at the longest length is called the set load, and the valve
spring ... melting the materials. (a) The
rotating rod (left) is slightly pressed to the stationary rod (right), so
that friction heat is generated at the rubbing plane. (b) The heat
softens the materials. Then...
- 25
- 397
- 0
The Design and Implementation of a Log-Structured File System
Ngày tải lên :
12/09/2012, 15:05
... clean. The policy rates each segment
according to the benefit of cleaning the segment and the
cost of cleaning the segment and chooses the segments with
the highest ratio of benefit to cost. The benefit ... shows the relative importance of the various
kinds of data written to disk, both in terms of how much of
the live blocks they occupy on disk and in terms of how
much of the data written to the ... sequen-
tially, then writes 100 Mbytes randomly to the existing file, then
reads 100 Mbytes randomly from the file, and finally reads the file
sequentially again. The bandwidth of each of the five phases...
- 15
- 1.4K
- 0
The Breadth and Depth of DSP
Ngày tải lên :
13/09/2012, 09:49
... specialized audience.
State -of -the- art researchers need this kind of detailed mathematics to
understand the theoretical implications of the work.
A basic premise of this book is that most practical ... with radio waves to probe the interior of the
human body. Properly adjusting the strength and frequency of the fields cause
the atomic nuclei in a localized region of the body to resonate between ... word in the incoming audio signal is isolated and then analyzed to
identify the type of excitation and resonate frequencies. These parameters are
then compared with previous examples of spoken...
- 10
- 727
- 0
Cambridge.University.Press.Fearing.Others.The.Nature.and.Treatment.of.Social.Phobia.Mar.2007.pdf
Ngày tải lên :
21/09/2012, 10:54
... examine the
validity of the measures devised to ascertain and quantify social anxiety,
as this is most relevant to social phobia.
Examination of the validity both of the construct and of the methods
assessing ... contempt and ridicule
instead, further diminishing their rather uncertain standing within the
group. Concerned both about losing and winning À thereby stoking
the resentment of other competitors À they ... this
end, they make themselves agreeable, smiling and nodding with interest
and approval with those they know. When not preoccupied with them-
selves, they can be well attuned to the needs of others and...
- 451
- 930
- 2
Báo cáo y học: "Management of chest pain: exploring the views and experiences of chiropractors and medical practitioners in a focus group interview"
Ngày tải lên :
25/10/2012, 10:06
... referral) may
depend on the nature of the condition, whether the refer-
ral is for reasons of diagnosis and/ or treatment, the pref-
erence of the provider, and the relationship between the
providers. ... composed of both chiropractic and
medical professionals. The goals of the focus group were
to explore the attitudes and experiences of medical and
chiropractic clinicians regarding their patients ... situation, that the point of referral may
depend on the familiarity or relationship between the
providers, and that the nature of the referral (e.g., amount
and type of information accompanying the referral)...
- 10
- 788
- 0
The sociology and psychology of terrorism who become a terrorist anh why
Ngày tải lên :
07/11/2012, 14:21
... Department of State. A few of the groups on the official list,
however, are guerrilla organizations. These include the FARC, the LTTE, and the
PKK. To be sure, the FARC, the LTTE, and the PKK engage ... integrate the good and bad parts of
the self, which are instead split into the “me” and the “not me.” These
Library of Congress – Federal Research Division The Sociology and Psychology of Terrorism
37
The ... Zealots’
justification for their killing of other Jews was that these killings demonstrated
the consequences of the immorality of collaborating with the Roman invaders,
and that the Romans could not protect their...
- 186
- 448
- 3