Informatics Publishing Limited

T. Subbulakshmi ¹, P. Parameswaran ², C. Parthiban ², M. Mariselvi ³, J. Adlene Anusha ³, G. Mahalakshmi ³

Affiliations
1 Department of Information Technology, Sethu Institute of Technology, IN
2 Tata Consultancy Services, IN
3 Department of Computer Science and Engineering, Thiagarajar College of Engineering, IN

Abstract

Distributed Denial of Service (DDoS) attacks were considered to be a tremendous threat to the current information security infrastructure. During DDoS attack, multiple malicious hosts that are recruited by the attackers launch a coordinated attack against one host or a network victim, which cause denial of service to legitimate users. The existing techniques suffer from more number of false alarms and more human intervention for attack detection. The objective of this paper is to monitor the network online which automatically initiates detection mechanism if there is any suspicious activity and also defense the hosts from being arrived at the network. Both spoofed and non spoofed IP's are detected in this approach. Non spoofed IP's are detected using Enhanced Support Vector Machines (ESVM) and spoofed IP's are detected using Hop Count Filtering (HCF) mechanism. The detected IP's are maintained separately to initiate the defense process. The attack strength is calculated using Lanchester Law which initiates the defense mechanism. Based on the calculated attack strength any of the defense schemes such as Rate based limiting or History based IP filtering is automatically initiated to drop the packets from the suspected IP. The integrated online monitoring approach for detection and defense of DDoS attacks is deployed in an experimental testbed. The online approach is found to be obvious in the field of integrated DDoS detection and defense.

Keywords

DDoS Attacks, Lanchester Linear Law, Enhanced Support Vector Machines, Rate Based Limiting, History Based IP Filtering.

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B. Siddartha ¹, I. Sudheer Babu ², C. Parthiban ³, C. Madhavi ³

Affiliations
1 Malla Reddy College of Pharmacy, Maisammaguda, Dhulapally, Secunderabad-500014. Andhra Pradesh, IN
2 Sir C.R. Reddy College of Pharmaceutical Sciences, Eluru, IN
3 Department of Pharmaceutical Analysis, Malla Reddy College of Pharmacy, Secunderabad, IN

Abstract

A simple, precise and accurate UV Spectrophotometric method has been developed for estimation of Pantoprazole in bulk and tablet dosage form. In this method Pantoprazole shows max at 295nm using 0.1N NaOH as a solvent and calibration graphs were plotted over the concentrations ranging from 1 to 20μg/ml of Pantoprazole with correlation coefficient 0.999. The proposed method was validated as per ICH Q2 (R1) guidelines for precision, linearity, accuracy and recovery. The limit of detection (LOD) and limit of quantification (LOQ) were found to be 0.083μg/ml and 0.250μg/ml respectively by simple UV spectroscopy.

Keywords

Pantoprazole, UV-Spectroscopy, Validation, NaOH, ICH Guidelines.

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C. Parthiban ¹, B. Sunantha ², M. Shahul Hameed ²

Affiliations
1 Department of Civil Engineering, Raja College of Engineering, Veerapanjan - 625020, Tamil Nadu, IN
2 Department of Civil Engineering, P.S.R College of Engineering, Sivakasi - 626140, Tamil Nadu, IN

Abstract

Objectives: A study is carried out to investigate the effect of marble sludge powder on the stabilization of soil and to improve soil properties of an earthen dam at Vembakottai. Methods: Soil samples were collected from different places at Vembakottai dam, while marble sludge powder bought from local market. Marble Sludge powder is the by product from marble pieces and used as a constituent for cement concrete and then stabilize the soil strength. The test revealed as compaction test, unconfined compression test obtained on soil mixed at different proportions of marble sludge powder and cement. Findings: Finally, marble sludge powder can be used to stabilize the soil as sustainable alternative compared to other stabilizers. Marble dust is the best way to achieve sustainable practices and enhance the strength in Vembakottai dam. Basis of experimental work, this research concludes that soil stabilization using cement alone is a very difficult process. Some extra admixtures are used to increase the strength of soil. An admixture which reacts with cement undergone hydration process for that marble sludge powder plays important role in soil stabilization. In this research, better results can be achieved by using marble sludge powder and cement in a ratio of 10:20.

Keywords

Binding Material, Compaction Test, Shear Strength, Stabilization, Sustainable Practices.

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