Decoupling the decision-making process from the data forwarding process is the heart of
software-defined networks technology. One of the most important components of this
technology is the controller, which is the smartest component in the network.
Many of the
controllers have been developed since the technology originated, and many researches
have been done to compare the performance of these controllers for productivity, delay and
protection.
And due to the importance of selecting the appropriate controller according to different
parameters and network states, we studied the performance of four controllers: Floodlight,
Beacon, Nox, RYU in terms of productivity, RTT, time of establishing connection with an
OpenFlow switch and the time for adding an input to the switch flow table. The results
showed that the Beacon control was superior in performance when the number of switches
in the network was equal to the number of processor cores used by the controller. For RTT
and the time needed to add an input to the flow table, the NOX controller achieved less
time. Finally, the Floodlight controller was the best in terms of establishing connection
with the switch because it needed less time.
This paper presents a new type of encryption, using a matrix
asymmetric and symmetric matrix inverse matrix clear text, which
is an internal encryption.
As well as asymmetric encryption, where the ciphertext is inversely
symmetric matrix.
Decryp
tion matrix related to any asymmetric encryption keys
depends on public and private, and is applied to the coded messages
used in the current system ASCII our computers.
The main objective of this research is to develop an
arithmetic model for transformations between geographic and
State Plane Coordinate within the three types of Conformal
Syrian Conical projection (tangent, secant and Semiconformal),
In order to
enable all Specialists and surveyors to
carry out direct and reverse transformations of horizontal
coordinates of the points without returning to any competent
authorities to avoid any administrative and computational
complexities.
It may be difficult, often, finding the cycle intersection of two
curves in the projective plane. Therefore, in our paper, we have
mentioned a new mechanism to find it which was represented by
S.N algorithm that works on writing this intersection
as sum of
simple cycle intersections which is easy to find. On the other
hand, by this algorithm we mentioned a new and simplified proof
of the known Bezout’s theorem.
The research aim for testing the correlations between the morphology of the bone around the apexes of the central incisors and facial type.the sample consist of 59 patient.They were divided into three groups according to their facial Type.the result
is three groups ,19 short face type, 20 norm face type, and 20 long face type patients, aged 19 to 40 years.we have measured many measurement that determine the relationship between the apex of central upper incisor and its surroundings. The measurements were processed using analysis of variance Anova and Mann-Whitney U-tests and (Correlation coefficient )r .We find that at the upper central incisors, In short face type subjects the root apex of the upper central incisors was farther away from the lingual cortex than in the norm face type and long face type. In long face type subjects the root apex of the upper incisors was farther away from the palatal plane than in the norm face type and long face type.
The dentoalveolar mechanism, within the dentofacial complex, acts to camouflage the vertical base bone discrepancies resulting in differences in the functional occlusal plane cant (FOPC). Considering this, ensures more stable orthodontic treatment re
sults. This research aims to study the possibility of a relationship between the FOPC (represented by anterior and posterior occlusal planes) and the vertical facial growth patterns (VFGPs) using cone beam computed tomography (CBCT). The research sample consisted of 50 CBCTs (22 males and 28 females) aged 18 to 35 years with no prior orthodontic treatments. Their FOPCs were studied according to the VFGPs. Pearson's correlation coefficient was then calculated for all the data obtained. The study showed that the posterior occlusal plane has a clearer correlation to the VFGPs than to the traditional occlusal plane. The posterior occlusal plane showed a strong correlation with the VFGPs in the female sample.
changing in the ground plane for the fractal antenna has been studied in this research and its effects on the antenna frequency bandwidth for more than frequency bands, results are encouraging, where we get multi band fractal antenna with wide BW for more than 100%.
The solution to many of the issues in Descriptive Geometry is easy
when the issue in a particular case، so methods are used Descriptive
Geometry to turn the issue of the general case to the special case to
facilitate the resolution، and usually th
is is easy in some of the
issues and the need for a set of steps in other issues، so we thought
to take advantage of computer programs to solve some of these
issues directly، or we will provide programming model on one of
the issues to be resolved to facilitate and reduce the steps needed to
reach a solution.
This paper presents an interactive solution method for treating multi objective mathematical programming problems with fuzzy parameters in the objective functions and in the constraints. Theses fuzzy parameters are characterized by fuzzy numbers. For
such problems, the concept of a-Pareto optimality introduced by extending the ordinary Pareto optimality based on the a-level sets of fuzzy numbers. The proposed solution method is based on cutting planes, which are based on local trade off ratios between the objective functions as prescribed by the decision maker at each iterate generated by the method. An illustrative numerical example is given to clarity this method.
Through the last centuries Scientists and Researchers have created analytic and
geographic multi-methods and formulas for the definition of elastic curve’s unknowns of
beams. We have seen that most of these methods had matched in their end formulas
, while
they only differed by the analytic basis for the differentiating of these formulas, that their
introductions depended on different physic expressions and mathematic relations. This
scientific work contains a concise preview for the definition relations and methods of
elastic Curve’s unknowns of beams available, so that the expression about these in an easy
and collective expression with agreement of the depended analytic method by the
Researcher. That can avail of the academic job on the first hand, and it helps the structural
analyzer choose the proper and easier device for his structural analysis for the definition of
elastic Curve’s unknowns of studied structural system.
