... then they are com-
pared to each other. Logistic regression was used to control for confounding factors.
Results: In the anterior group, regardless of confounding factors, the incidence of exces-
sive ... prior to deliv-
ery. In addition to the location in the anterior portion
or posterior portion of uterus, they were classified by
sonographers blinded to the outcomes when so-
nographic exam according ... bleeding and peripartum
hysterectomy, even if placenta previa does not exist
[3,6,9]. Therefore Faiz et al. claimed that age, parity,
history of cesarean section and history of abortion
should be...
... Medical Center, Nagoya University from July 2004 to October 2005. The participants aged 20 to 69
years were classified into three group accordingto CYP2C19 genotype; rapid metabolizers (RM) with ... Helicobacter pylori accordingto genotypes of CYP2C19,
IL-1B, and TNF-A
Yoshiko Ishida, Yasuyuki Goto, Takaaki Kondo, Mio Kurata, Kazuko Nishio, Sayo Kawai, Tomo Osafune, Mariko
Naito, Nobuyuki Hamajima ... Center, Nagoya University, Nagoya, Japan to
seek H. pylori tests and eradication between July 2004
and October 2005. The visitors aged 20 to 69 years
were asked to participate in the polymorphism...
... didn’t carry over to the E.T. video game
for Atari 2600. Accordingto one Web site, “E.T. is notorious for being what
many believe to be the worst game ever.” As the rumor goes, to get rid of all ... drinks to paper towels to chocolate bars to hair
dryers, the list of fallen products is like a roll call of the dearly departed.
In the U.K., there was a similar version of the Segway story. ... everywhere, from the living room to the
bedroom. You could barely make out the vague outlines of furniture. The
kitchen with its rancid refrigerator and grease-clogged stove-top burners was
hardly...
... vertex j to k, let them first
diverge at vertex j
and then converge at vertex k
. Then, that section of P
from j
to k
and that section of Q from j
to k
form a circuit. This leads to a
contradiction ... Kuratowski, K., 1930, Sur le Problème des Courbes Gauches en Topologie,
Fundamental Mathematics, 15, 271–283.
[4] Sohn, W. and Freudenstein, F., 1986, An Application of Dual Graphs to the Au-
tomatic ... to be a bipartite if its vertices can be partitioned into two subsets,
V
1
and V
2
, such that every edge of G connects a vertex in V
1
to a vertex in V
2
.
Furthermore, the graph G is said to...
... kinematic chain are numbered sequentially from 1 to n. Since in the
graph, representation vertices correspond to links and edges correspond to joints, the
link -to- link adjacency matrix, A, is defined as ... vertices shown in Figure 3.9 are numbered from 1
to 4 representing links 1 to 4, respectively, and the edges are labeled as R, R, S, and
C accordingto the pair connections between links.
Similarly, ... diagonal
elements. The matrix determines the structural topology of a kinematic chain up
to structural isomorphism. For example, the link -to- link adjacency matrix of the
spur-gear set shown in...
... labeled graph may map into itself.
The set of those permutations which map the graph into itself form a group called a
group of automorphisms. This group of automorphisms is said to be a vertex-induced
group ... developed for
enumeration of mechanisms accordingto certain prescribed structural characteristics.
4.2 Correspondence Between Mechanisms and Graphs
Since the topological structure of a kinematic ... the graph into itself an edge-induced group of automorphisms.
Example 4.13 Stephenson Chain
Consider the Stephenson chain shown in Figure 4.8a, where the six links are labeled
from 1 to 6. The...
... figure mounted on top of the chariot always pointed to the south
as the chariot was towed from one place to another. It is believed that the ancient
Chinese used this device to help them navigate ... trains are used to transmit motion and/or power from one rotating shaft to
another. An enormous number of gear trains are used in machinery such as automobile
transmissions, machine tool gear boxes, ... labeled
according to their axis locations is shown in Figure 7.3b. Readers can easily verify
that Equations (7.3) through (7.5) are satisfied. Removing all the geared edges from
the graph leads to...
... stator blades. The purpose of the stator blades is to redirect the fluid flow
from the turbine to the impeller, providing a torque multiplication to the transmission.
The torque amplification factor ... housing.
The torque converter has three purposes. First of all, it serves as a fluid coupling to
provide a smooth transmission of torque from the engine to the wheels. It also allows
a vehicle to stop ... the connecting rod (attached to the piston), and link 6 is the piston.
We observe that the piston and the crankshaft of the second mechanism shown
in Figure 8.1 belong to a four-bar loop. A change...
... manipulator.
FIGURE 9.4
Planar RR–RRR manipulator.
Planar Three-dof Manipulators
For planar three-dof parallel manipulators, Equation (9.1) yields m = 3 and L = 2.
Substituting λ = 3 and F = 3 into ... manipulator, it
should be compact, light weight, and dextrous. To achieve these goals, gear trains,
belts-and-pulley drives, and other mechanical transmissions are often used to permit
actuators to ... spherical
manipulator is the five-bar RR–RRR manipulator. Similarly, the only feasible three-
dof spherical manipulator is the 3-RRR manipulator as shown in Figure 6.14. Several
articles related to kinematic...
... variables subject to a constraint that all the variables are nonnegative integers.
We first discuss a method for solving one equation in n unknowns. Then, we extend
the method to solving a system ... coefficients. The c
i
s are nonnegative
integers and k is a positive integer. We wish to solve for x
i
, for i = 1, 2, ,n
subject to a constraint that all x
i
s must be nonnegative integers. In addition, ... nonnegative integers. This can be accomplished by a com-
puter program using a nested-do loops algorithm to vary the value of each x
i
and
check for the validity of the solutions. A more rigorous procedure...