289 research outputs found
Improving intrusion detection using genetic algorithm
Intrusion Detection System (IDS) is one of the key security components in today’s networking environment. A great deal of attention has been recently paid to anomaly detection to accomplish intrusion detection. However, a major problem with this approach is maximizing detection rate and accuracy, as well as minimizing false alarm i.e., inability to correctly discover particular types of attacks. To overcome this problem, a genetic algorithm approach is proposed. Genetic Algorithm (GA) is most frequently employed as a robust technology based on machine learning for designing IDS. GAs are search algorithms which are based on the principles of natural selection and genetics. GA functions on a number of possible solutions using the principle of survival of the fittest with the aim to generate better approximations to solve a particular problem GA is facing. The validity of this approach is verified using Knowledge Discovery and Data Mining Cup 1999 (KDD Cup ’99) dataset. The experimental results demonstrate that the proposed approach outperforms the existing techniques, with the detection rate of attack and false alarm rates of 95.7265 and 4.2735, respectively
Acute leukemia of ambiguous lineage with trisomy 4 as the sole cytogenetic abnormality: A case report and literature review
AbstractWe describe a patient with acute leukemia of ambiguous lineage who had trisomy 4 as the sole cytogenetic abnormality. Clinical, pathological, immunophenotypic and molecular features are presented and compared with the previous 4 published cases. Over expression of c-kit, which is localized to chromosome 4, was documented on the leukemic blasts. Prognosis seems to be poor. Treatment with acute lymphoblastic leukemia like regimens seems to be superior compared to acute myeloid leukemia like regimens and allogeneic stem cell transplant is recommended after achieving remission
Modeling of Trim Panels in the Energy Finite Element Analysis.
Modeling a trim panel is divided into finding the power exchange
through two different paths: i)the connection of the outer and inner
panels ii) through the layers directly. The vibrational power
exchanged through the mounts is modeled as the connection of two
parallel plates connected via a beam. Wave matrices representing
plates and beams are derived separately; then a matrix method is
proposed to solve for the wave amplitudes and hence the vibrational
power exchange between the plates accordingly. A closed form formula
for the case of connection of two identical plates is derived. For
the power transmission loss directly through the layers, first
transfer matrices representing layers made of different materials is
considered. New matrices for a porous layer are derived. A method of
finding the layered structure transfer matrix is proposed. It is
concluded that in general a single isotropic layer cannot replace a
structure accurately. Finally, on the basis of an equivalent
transfer matrix, an optimization process for is proposed to replace
the panel by a suitable set of layers.Ph.D.Mechanical EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/58476/1/moraveji_1.pd
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