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Hybrid Key Management Scheme for Wireless Sensor Networks
R.Sharmila,V.Vijayalakshmi 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.11
Many key management schemes have been proposed in systematically deployed Wireless Sensor Networks (WSNs).The sensor nodes are equipped with inadequate battery power, low memory, limited computation and communication range. Energy efficient secure routing is major issue in wireless sensor networks. In this paper, the hybrid key management scheme is proposed by combining public key cryptography scheme with symmetric scheme. The symmetric keys are generated by using genetic algorithm. Initial input for the genetic algorithm is the seed key generated by Hyperelliptic Curve Cryptography (HECC).The proposed scheme addresses the energy efficiency, resilience against node capture attack, key refreshment between the cluster head and member nodes in the cluster. The simulation results show that the hybrid scheme is more robustness, efficient energy with reduced key size.
Crystal Structure Analysis of 4-Chloro-2{[(2-hydroxy-5-methylphenyl)amino]methyl}5-methylphenol
Sharmila, P.,Rajesh, R.,Venkatesan, R.,Ganapathy, Jagadeesan,Aravindhan, S. The Basic Science Institute Chosun University 2016 조선자연과학논문집 Vol.9 No.4
The crystal structure of the saliciline derivatives 4-chloro-2{[(2-hydroxy-5-methylphenyl)amino]methyl}5-methylphenol ($C_{15}H_{15}ClNO_2$) has been determined from single crystal X-ray diffraction data. In the title compound crystallizes in the monoclinic space group P21/c with unit cell dimension $a=11.5241(2){\AA}$, $b=8.733(2){\AA}$ and $c=13.649(2){\AA}$ [${\alpha}=90^{\circ}$, ${\beta}=130.876(2)^{\circ}$ and ${\gamma}=90^{\circ}$]. the title compound are essentially planar conformation. The compound lies across a crystallographic inversion centre and adopts E configurations with respect to the C-N bonds. The crystal packing of the molecules of compound is stabilized through weak O-H...O inter molecular interactions.
Crystal Structure Analysis of N,N'-bis(3-chloro-2-methylsalicylidene)-1,4-butanediamine
Sharmila, P.,Rajesh, R.,Venkatesan, R.,Ganapathy, Jagadeesan,Aravindhan, S. The Basic Science Institute Chosun University 2016 조선자연과학논문집 Vol.9 No.4
The crystal structure of the saliciline derivatives N,N'-bis(3-chloro-2-methylsalicylidene)-1,4-butanediamine ($C_{20}H_{22}Cl_2N_2O_2$) has been determined from single crystal X-ray diffraction data. In the title compound crystallizes in the triclinic space group $P{\bar{i}}$ with unit cell dimension $a=4.6085(3){\AA}$, $b=5.9747(3){\AA}$ and $c=5.9747(3){\AA}$ [${\alpha}=83.889(4)^{\circ}$, ${\beta}=86.744(5)^{\circ}$ and ${\gamma}=82.085(5)^{\circ}$]. The title compound is essentially planar conformation. The compound lies across a crystallographic inversion centre and adopts E configurations with respect to the C-N bonds. The crystal packing of the molecules of compound is stabilized through weak O-H...N intra molecular interactions
Crystal Structure Analysis of N,N′-bis(3-chloro-2-methylsalicylidene)-1,4- butanediamine
P. Sharmila, R. Rajesh, R. Venkatesan2, Jagadeesan Ganapathy, and S. Aravindhan 조선대학교 기초과학연구원 2016 조선자연과학논문집 Vol.9 No.4
The crystal structure of the saliciline derivatives N,N′-bis(3-chloro-2-methylsalicylidene)-1,4-butanediamine (C20H22Cl2N2O2) has been determined from single crystal X-ray diffraction data. In the title compound crystallizes in the triclinic space group Pī with unit cell dimension a= 4.6085(3) Å, b=5.9747(3) Å and c= 5.9747(3) Å [α=83.889 (4)°, β= 86.744(5)° and γ= 82.085(5)°]. The title compound is essentially planar conformation. The compound lies across a crystallographic inversion centre and adopts E configurations with respect to the C-N bonds. The crystal packing of the molecules of compound is stabilized through weak O-H...N intra molecular interactions Keywords: Chromene; Schiff Base Ligand; Single Crystal Structure; X-ray Diffraction
Crystal Structure Analysis of 4-Chloro-2{[(2-hydroxy-5-methylphenyl)amino]methyl}5-methylphenol
P. Sharmila, R. Rajesh, R. Venkatesan, Jagadeesan Ganapathy, and S. Aravindhan 조선대학교 기초과학연구원 2016 조선자연과학논문집 Vol.9 No.4
The crystal structure of the saliciline derivatives 4-chloro-2{[(2-hydroxy-5-methylphenyl)amino]methyl}5-methylphenol (C15H15ClNO2) has been determined from single crystal X-ray diffraction data. In the title compound crystallizes in the monoclinic space group P21/c with unit cell dimension a= 11.5241(2) Å, b=8.733(2) Å and c= 13.649(2) Å [α=90°, β= 130.876(2)° and γ= 90°]. the title compound are essentially planar conformation. The compound lies across a crystallographic inversion centre and adopts E configurations with respect to the C-N bonds. The crystal packing of the molecules of compound is stabilized through weak O-H...O inter molecular interactions Keywords: Chromene, Schiff Base Ligand, Single Crystal Structure, X-ray Diffraction
Sokkanathan, G.,Sharmila, V. Godvin,Kaliappan, S.,Banu, J. Rajesh,Yeom, Ick Tae,Rani, R. Uma Elsevier 2018 Journal of environmental management Vol.206 No.-
<P><B>Abstract</B></P> <P>In this study, recalcitrant rich retting-pond wastewater was treated primarily by anaerobic treatment and subsequently treated with a solar photofenton process to remove phenol and organics. The anaerobic treatment was carried out in a granulated laboratory scale hybrid upflow anaerobic sludge blanket reactor (HUASBR) with a working volume of 5.9 L. It was operated at different hydraulic retention times (HRT) from 40 to 20 h over a period of 140 days. The optimum HRT of the anaerobic reactor was found to be 30 h, with corresponding chemical oxygen demand (COD) and phenol removal of 60% and 47%, respectively. Primary anaerobically treated wastewater was subjected to secondary solar photofenton treatment which was carried out at pH 3.5. Response surface methodology (RSM) was used to design and optimize the performance of the solar photofenton process. Regression quadratic model describing COD removal efficiency of the solar photofenton process was developed and confirmed by analysis of variance (ANOVA). Optimum parameters of the solar photofenton process were found to be: 4 g/L of fenton as catalysts, 25 mL of hydrogen peroxide, and 30 min of reaction time. After the primary anaerobic treatment, solar photofenton oxidation process removed 94% and 96.58% of COD and phenol, respectively. Integration of anaerobic and solar photofenton treatment resulted in 97.5% and 98.4% removal of COD and phenol, respectively, from retting-pond wastewater.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The HUASB reduces COD and phenol to 180 mg/L and 117 mg/L respectively at 30 h HRT. </LI> <LI> The maximum biogas production of 0.82 L/d at 30 h HRT. </LI> <LI> The post treatment was carried out by solar photofenton process for 30 min. </LI> <LI> Combined HUASB and photofenton process removed 97.5% and 98.4% COD and phenol. </LI> </UL> </P>
AI-driven drowned-detection system for rapid coastal rescue operations
Dileep P,M. Durairaj,Sharmila Subudhi,V V R Maheswara Rao,J. Jayanthi,D Suganthi 대한공간정보학회 2024 Spatial Information Research Vol.32 No.2
Recent observations indicate that nearly 50% of the public frequently visit coastal areas during weekends, seeking the health benefits of natural sunlight and fostering familial bonds. Notably, a significant portion of these visitors are unaware of swimming techniques or face other physical challenges, rendering them vulnerable to drowning, especially in areas lacking adequate lifeguard support or immediate medical emergency services. This study introduces an advanced drowneddetection device that employs a deep learning algorithm, grounded in artificial intelligence architecture, to swiftly detect and address potential drowning incidents. The system is particularly vigilant towards high-risk groups, such as children and the elderly. Upon detecting a threat, it autonomously deploys drones equipped with inflatable rescue tubes and notifies local authorities. Preliminary results suggest that our proposed model can effectively rescue a drowning individual in under 7 min, highlighting its prospective utility in curtailing swimming-related fatalities worldwide. This research underscores the need for technological intervention to enhance safety measures at coastal destinations and seeks to raise awareness about the importance of well-established lifeguard support.