Data Outsourcing based on Secure Association Rule Mining Processes

V. Sujatha,Debnath Bhattacharyya,P. Silpa Chaitanya,Tai-hoon Kim 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.3

Data mining is the process of extracting information from data warehousing applications. Data outsourcing is the major task in present days, for accessing services and other features of the database processing. But sometimes this process may achieve to split among various parties with recommended data items in analyzing of the data. Data security is one of the key processes in outsourcing data to various outside users. Traditionally Fast Distribution Mining algorithm was proposed for securing distributed data. This paper addresses a problem by secure association rules over partitioned data in both horizontal and vertical representation. A secure frequency developed algorithm is used for doing above process efficiently in partitioned data, which includes services of the data in outsourcing process. Frequent item sets are used to access services in outsourcing data in recent application development data mining. Our proposed work maintains efficient security over vertical and horizontal view of representation in secure mining applications. The result shows that algorithm timing is desirable for big size data for security considerations using association rule mining operations in real time application development.

Theoretical simulation on evolution of suspended sodium combustion aerosols characteristics in a closed chamber

Sujatha Pavan Narayanam,Amit Kumar,Usha Pujala,Subramanian V.,Srinivas C.V.,Venkatesan R.,Athmalingam S.,Venkatraman B. 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6

In the unlikely event of core disruptive accident in sodium cooled fast reactors, the reactor containmentbuilding would be bottled up with sodium and fission product aerosols. The behavior of these aerosols iscrucial to estimate the in-containment source term as a part of nuclear reactor safety analysis. In thiswork, the evolution of sodium aerosol characteristics (mass concentration and size) is simulated usingHAARM-S code. The code is based on the method of moments to solve the integro-differential equation. The code is updated to FORTRAN-77 and run in Microsoft FORTRAN PowerStation 4.0 (on Desktop). Thesodium aerosol characteristics simulated by HAARM-S code are compared with the measured values atAerosol Test Facility. The maximum deviation between measured and simulated mass concentrations is30% at initial period (up to 60 min) and around 50% in the later period. In addition, the influence ofhumidity on aerosol size growth for two different aerosol mass concentrations is studied. The measuredand simulated growth factors of aerosol size (ratio of saturated size to initial size) are found to bematched at reasonable extent. Since sodium is highly reactive with atmospheric constituents, the aerosolgrowth factor depends on the hygroscopic growth, chemical transformation and density variations besides coagulation. Further, there is a scope for the improvement of the code to estimate the aerosoldynamics in confined environment

Auditing of Storage Security on EncryptionTORAGE SECURITY ON ENCRYPTION

V. Sujatha 사단법인 미래융합기술연구학회 2017 아시아태평양융합연구교류논문지 Vol.3 No.2

Cloud storage services became progressively fashionable. attributable to the importance of privacy, several cloud storage secret writing schemes are projected to guard information from those that don't have access. All such schemes assumed that cloud storage suppliers area unit safe and can't be hacked; but, in follow, some authorities (i.e., coercers) might force cloud storage suppliers to reveal user secrets or confidential information on the cloud, therefore altogether circumventing storage secret writing schemes. during this paper, we have a tendency to gift our style for a brand new cloud storage secret writing theme that allows cloud storage suppliers to make convincing faux user secrets to guard user privacy. Since coercers cannot tell if obtained secrets area unit true or not, the cloud storage suppliers make sure that user privacy continues to be firmly protected. Most of the projected schemes assume cloud storage service suppliers or reliable third parties handling key management square measure reliable and cannot be hacked; however, in follow, some entities would possibly intercept communications between users and cloud storage suppliers then compel storage suppliers to unhitch user secrets by exploitation government power or different suggests that. throughout this case, encrypted info square measure assumed to be known and storage suppliers square measure requested to unhitch user secrets.

A Novel MEMS Microheater Based Alcohol Gas Sensor using Nanoparticles

V. S. Selvakumar,L. Sujatha,R. Sundar 대한전자공학회 2018 Journal of semiconductor technology and science Vol.18 No.4

This work reports the simulation of nanoparticle coated MEMS based Alcohol Gas Sensor analysis with various parameters like power consumption, temperature uniformity, resistance change, sensitivity and selectivity. It is achieved by measuring the change in resistance when gas is exposed over the sensing layer. This instantaneous response in detection of gases helps in various application such as breath analyzer in vehicles, breath analyzer, food quality control etc. The gas sensor employs a mesh type poly silicon micro-hotplate structure. The sensor holds a very thin conducting film made of titanium which detects the presence of ethyl alcohol vapors on it. The temperature generated by the hot-plate influences various factors such as the conductance of the film and the quantity of a particular gas adsorbed on it. When sensor film is bring to the right boiling point temperature it evaporates residual vapor particles. For effective sensing of alcohol gas, we optimize the supply voltage (around 3 Volts) and the uniform temperature profile of the micro heater was analyzed (619.29 K) along with sensitivity and selectivity. For the gas sensing analysis, we have compared the sensitivity of thin film coating of ZnO, TiO₂, and SnO. The design was simulated by means of joules heating, thermal expansion and Electric current FEM simulation.

Texture Classification Based on Random Threshold Vector Technique

B.V. Ramana Reddy,M.Radhika Mani,B.Sujatha,Dr.V.Vijaya Kumar 보안공학연구지원센터 2010 International Journal of Multimedia and Ubiquitous Vol.5 No.1

A study on transport and plugging of sodium aerosol in leak paths of concrete blocks

Narayanam Sujatha Pavan,Sen Soubhadra,Kumari Kalpana,Kumar Amit,Pujala Usha,Subramanian V.,Chandrasekharan S.,Preetha R.,Venkatraman B. 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.1

In the event of a severe accident in Sodium Cooled Fast Reactors (SFR), the sodium combustion aerosols along with fission product aerosols would migrate to the environment through leak paths of the Reactor Containment Building (RCB) concrete wall under positive pressure. Understanding the characteristics of sodium aerosol transport through concrete leak paths is important as it governs the environmental source term. In this context, experiments are conducted to study the influence of various parameters like pressure, initial mass concentration, leak path diameter, humidity etc., on the transport and deposition of sodium aerosols in straight leak paths of concrete. The leak paths in concrete specimens are prepared by casting and the diameter of the leak path is measured using thermography technique. Aerosol transport experiments are conducted to measure the transported and plugged aerosol mass in the leak paths and corresponding plugging times. The values of differential pressure, aerosol concentration and relative humidity taken for the study are in the ranges 10–15 kPa, 0.65–3.04 g/m3 and 30–90% respectively. These observations are numerically simulated using 1-Dimensional transport equation. The simulated values are compared with the experimental results and reasonable agreement among them is observed. From the safety assessment view of reactor, the approach presented here is conservative as it is with straight leak paths.

New approach for prediction of influence of vehicle dynamics parameters on instability of unmanned track vehicle using robotic approach

N. Babu,S. Sujatha,S. Narayanan,V. Balamurugan 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.3

Achieving stability of unmanned, heavy tracked vehicles is challenging, especially under conditions of teleoperation because the remote operator cannot predict the dynamics of the vehicle. This paper proposes a new stability approach that can predict vehicle behavior in real-time and identify the dynamic input parameters that must be controlled to ensure stability and safety of the vehicle during teleoperation. The spatial kinematics and dynamics of tracked locomotion are computed using robotic approach in the form of decomposed serial manipulators and are then combined using suitable kinematic and dynamic constraints. A new stability study approach is presented for computing Multiple zero moment point (MZMP) for the robot since the robot consists of many serial manipulator systems. The stability margins obtained using the relationship between MZMP and combined Zero moment point (ZMP) provides additional information to identify the dynamic parameters that affect stability in the unmanned tracked vehicle during real-time control scenarios.

Vasculosyncytial membrane in relation to syncytial knots complicates the placenta in preeclampsia

K. Devi Sankar,P. Sharmila Bhanu,Sujatha Kiran,B. A. Ramakrishna,V. Shanthi 대한해부학회 2012 Anatomy & Cell Biology Vol.45 No.2

The vasculosyncytial membrane (VSM), primary site of fetomaternal exchange is formed when syncytiotrophoblast surrounds the terminal villi and make a close contact with capillaries. Some syncytiotrophoblast forms thin single layer of villous and some syncytial nuclei become piled up to form the syncytial knots (SKs). Undoubtedly there is a clear-cut inverse relation between villous VSM and fetal hypoxia. In preeclampsia (PE) the hypoxia injury disrupts the syncytial architecture which in turn initiates other complications of PE. Present study was designed to observe the morphological and histomorphometric features of 84 placentas from control and PE (42 each) collected from Department of Obstetrics and Gynecology. Neonatal weight and placental weight were reduced in PE than the controls but the feto-placental index did not differ. The SK density and VSM thickness was found to be increased and was statistically significant in PE cases. In relation to SKs, the VSM thickness was twofold increased than the controls and was statistically significant. The SKs in the present study were classified as type-1, 2a, 2b, and 3. Type 1 was found to be 62% in control and 47% in PE, type 2a and 2b were 38% in control and 37% in PE, and type 3 was in 8% of PE cases. All the parameters of present study reveal the adverse effects of PE influencing on both morphological and microscopical features of the placenta resulting in fetal hypoxia.