No abstract

The Intrusion Detection System architecture commonly used in commercial and research systems have a number of problems that limit their configurability, scalability or efficiency. In this paper, two machine-learning paradigms, Artificial Neural Networks and Fuzzy Inference System, are used to design an Intrusion Detection System. SNORT is used to perform real time traffic analysis and packet logging on IP network during the training phase of the system. Then a signature pattern database is constructed using protocol analysis and Neuro-Fuzzy learning method. Using 1998 DARPA Intrusion Detection Evaluation Data and TCP dump raw data, the experiments are deployed and discussed.

A microwave-induced iodine-catalyzed simple, rapid and convenient synthesis of different types of quinoxalines via condensation of 1,2-diamines with 1,2-dicarbonyl compounds has been accomplished with an excellent yield.

No abstract

The reaction of Cu II acetate with the new sulfo-functionalized arylhydrazone of β-diketone 2-[2-(4,4-dimethyl-2,6-dioxocyclohexylidene)hydrazinyl]benzenesulfonic acid (H 2 L, 1) in aqueous methanol solution led to the formation of the 2Dcoordinationpolymer{[Cu 4 (1κ 2 O,κN:2κO,κN-L) 4 (μ-OH 2 ) 2 ]· H 2 O} n (2). However, when the reaction was peformed in the presence of the N-containing species cyanoguanidine (cyg), 3,5-dimethyl-1H-pyrazole (dp), 2,2Ј-bipyridine (bpy) or pyrazine (py), the mononuclear (H 3 O + ) 2 [Cu(κ 2 O,κN-L) 2 ] (4), [Cu-(κ 2 O,κN-L)(dp) 2 ] (3) or [Cu(κ 2 O,κN-L)(κ 2 N-bpy)] (5) or dinu-[a]

An expeditious synthesis of N-substituted pyrroles has been developed by reacting 2,5-dimethoxy tetrahydrofuran and several amines using a microwave-induced molecular iodine-catalyzed reaction under solventless conditions.

The conjugate addition of amines to conjugated alkenes (commonly known as aza-Michael reaction) constitutes a key step for the synthesis of various complex natural products, antibiotics, α-amino alcohols and chiral auxiliaries. Ultrasound-induced addition of several amines to α, β-unsaturated ketones, esters and nitriles has been carried out very efficiently in water as well as under solvent-free conditions. No catalysts or solid supports have been used in this method. Remarkable enhancement of reaction rate has been observed in water under ultrasound-induced method. This environmentally benign procedure has provided clean formation of the products with better selectivity.

No abstract