Enhanced Security In Cloud With Multi-Level Intrusion Detection System

Cloud computing is a new type of service which provides large scale computing resource to each customer. Cloud Computing Systems can be easily threatened by various cyber attacks, because most of Cloud computing system needs to contain some Intrusion Detection Systems (IDS) for protecting each Virtual Machine (VM) against threats. In this case, there exists a tradeoff between the security level of the IDS and the system performance. If the IDS provide stronger security service using more rules or patterns, then it needs much more computing resources in proportion to the strength of security. So the amount of resources allocating for customers decreases. Another problem in Cloud Computing is that, huge amount of logs makes system administrators hard to analyse them. In this paper, we propose a method that enables cloud computing system to achieve both effectiveness of using the system resource and strength of the security service without trade-off between them

Parameter Estimation of a Noisy Real Sinusoid Using Quartic Polynomial Approach

An analytical polynomial expression, for accurate and computationally efficient frequency estimation of a single real sinusoid under Additive White Gaussian Noise (AWGN), is derived and proposed in this paper. The method, which can be easily adapted for real time frequency estimation, is based on transforming the frequency estimation problem as the solution of a fourth order (quartic) expressed as powers of a trigonometric function containing the unknown frequency. The coefficients of the quartic polynomial can be found using the complex magnitudes of three Discrete Fourier Transform (DFT) bins, centered at the maximum magnitude value of the DFT coefficients. Simulated results illustrate that, the performance of the proposed estimator has a mean squared-error (MSE) performance which is very close to the Cramer Rao Lower Bound (CRLB) for high signal-to-noise ratio (SNR) region, as well as close to previously published estimators in the low SNR region

REVIEW OF PULMONARY EMBOLISM

Pulmonary embolism is a blockage of main artery or one of its branches of lung by the fat, amniotic fluid, embolisation of air or any other foreign substances. It is also due to formation of thrombus [blood clot] in the arteries of lung. Due to the pulmonary embolism the blood circulation in the body will be effected. Sometimes PE leads to death also by the lacking of breathing. In USA the annual incidence rates per 1000 persons aged 65-69 are 1.3 affected by pulmonary embolism. The diagnosis of pulmonary embolism at the earlier stage will be difficult because the symptoms like difficulty in breathing and chest pain are not easily differentiated from the other diseases like myocardial infarction. The usage of drugs like anti coagulants and thrombolytic cause bleeding problems even though they shows the antagonistic activity of pulmonary embolism at higher doses. Physician responsibility is to successfully avoid bleeding disorders are at the time of prevention of pulmonary embolism. And also by conducting of programs which should strive to coordinate care, by region wide guidelines and by implementing of care programs there is a chance to elaborate knowledge about the pulmonary embolism to the physicians and also there is a chance to bring awareness among the public which may decreases the number deaths due to pulmonary embolism annually. KEY WORDS: Pulmonary embolism, myocardial infraction, intra vascular co agulation, e.t.c

Outside the net: Intersectionality and inequality in the fisheries of Trincomalee, Sri Lanka

Inequality and conflict in Sri Lanka have frequently been analyzed along ethnic lines. However, many scholars have stressed the importance of other dimensions of identity, such as gender, caste and class, in studying social tension. This study uses intersectionality theory to examine how a combination of the social categories of gender, race, ethnicity and location creates structural inequality. This article draws upon in-depth research on Muslim, Tamil, Sinhalese and indigenous/Veder women who catch and market fish in the conflict-affected eastern district of Trincomalee, Sri Lanka. The focus was on intra-group differences among these women and the different sources of power they use to subvert existing power structures. Although multiple inequalities affected the respondents’ daily lives and participation in activities, they were not passive victims; they used their own agency to negotiate for their livelihoods. Nevertheless, the women who comprise the focus of this study appeared to be completely invisible to government fisheries management bodies. The lac

EXPERIMENTAL STUDY ON BEHAVIOUR OF COLD FORMED STEEL LIPPED ANGLE COLUMNS

This article reports the experimental work on the behavior of cold formed steel lipped angle columns performed with pinned end conditions under axial compression. In this work three different types of equal and unequal plain and lipped angle sections were chosen with a total of 12 specimens. The column lengths were taken as 1200 mm. The material properties of these sections were found by conducting Tensile Coupon test. The section geometries were selected in order to take account of all types of buckling modes. The column strengths determined from the experiment was examined with the design strength attained from Direct Strength Method in North American Specification and with the Numerical results (ABAQUS) for Cold formed steel structures. Finally, an appropriate design proposal was suggested for DSM to forecast the ultimate strength of cold formed steel columns

A STUDY ON VARIATIONS OF SALIVARY pH WITH INTAKE OF FOOD

ABSTRACTObjective: Study the changes in salivary pH before and after consumption of food in college students. Methods: The study was conducted on 60 students from Saveetha Dental College by checking the pH of their saliva using a pocket pH meter and thedata was entered and compared in SPSS software along with their diet.Results: The data showed significant change in the pH of saliva before and after food intake and consumption on certain food types leads to alkalinityof the oral cavity.Conclusion: This study helped in concluding the role of types of food in changing the pH of the oral cavity and thereby helps the need for properselection on food is necessary and importance of buffering action in pH maintenance.Keywords: Saliva, pH, foo

Utilizing the protected learning calculation method to forestall the Black Hole Attacks in Mobile ad-hoc networks

Mobile Ad-hoc Networks (MANETs) are a gathering of portable hosts which speak with each other with no focal system power or altered foundation. Because of its attributes like portability furthermore, heterogeneity ad-hoc networks are more defenseless to assaults. Black hole is an assault where every one of the bundles sent to assailant hub, by neighboring hubs, are dropped purposefully. In this thesis, we propose a secure learning calculation method which intends to identify and securing the black hole by considering the bundle drop reasons in needless mode. Presented AODV direction convention is adjusted to distinguish and securing the black hole assault. The investigation results demonstrate that our proposed calculation secure the AODV against black hole assault in MANETs

SCAVENGING OF FREE RADICALS AND TOTAL PHENOLS OF METHANOL EXTRACT OF AZIMA TETRACANTHA LAM

Objective: To report the antioxidant activity, phenolic acid profile of the Azima tetracantha methanolic extract and find the correlation between the total phenolic content and their relative antioxidant activity Methods: The total antioxidant activity, hydroxyl radical and hydrogen peroxide scavenging of A. tetracantha methanol extract was evaluated by adopting various standard methods. Total phenolic content was estimated from dried methanolic extract and the phenolic acids in the extract were identified by HPLC. Results: The methanolic extract of A. tetracantha showed free radical scavenging in a concentration dependant manner. The studies showed that the extract possess high free radical scavenging property, especially against hydroxyl radicals (67.61±0.42%). The correlation analysis results showed linear relation between phenolics content of methanolic extract and antioxidant assays (R2=0.97, 0.94, 0.99 and 0.98, significance at P<.0.001). The phenolic acid profile showed the presence of both benzoic acid and cinnamic acid derivatives, well known for their antioxidant potential. Conclusion: The current observations suggested that the methanol extract of A. tetracantha exhibited multiple antioxidant activities, by scavenging free radicals. So, it can be concluded that the extract is a source of natural antioxidant, suggesting its traditional use as a rejuvenating agent