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NPFAM: Non-Proliferation Fuzzy ARTMAP for Image Classification in Content Based Image Retrieval
( Anitha K ),( Chilambuchelvan A ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.7
A Content-based Image Retrieval (CBIR) system employs visual features rather than manual annotation of images. The selection of optimal features used in classification of images plays a key role in its performance. Category proliferation problem has a huge impact on performance of systems using Fuzzy Artmap (FAM) classifier. The proposed CBIR system uses a modified version of FAM called Non-Proliferation Fuzzy Artmap (NPFAM). This is developed by introducing significant changes in the learning process and the modified algorithm is evaluated by extensive experiments. Results have proved that NPFAM classifier generates a more compact rule set and performs better than FAM classifier. Accordingly, the CBIR system with NPFAM classifier yields good retrieval.
Anitha P.,Kumar K. Karthik,Kamaraja A. S. 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.4
In the conventional scheme of power converters for electric vehicle battery charging applications from Solar Photo Voltaic System (SPV), the boost converter is preferred at the front end followed by a full-bridge converter with a discrete switches design. The effect of circuit parasites considerably contributes to power losses and degrades performance. An attempt is made on the entire scheme by integrating the Y-Source Boost Converter (YSBC) with the Phase Shifted Full Bridge Converter (PSFBC) to perform better with the high-power density and minimum effects of circuit parasites. The total system were digitally controlled incorporating the effective MPPT with boost solutions for solar conversion and Zero Voltage Switching (ZVS) on the full-bridge conversion through full protection features. The thermal design of the system were carried out to achieve effective power density. The system voltage conversion boosted from SPV voltage of 20VDC to 60VDC to charge a battery bank of 48 V with a typical system specification of (300–350) W was targeted with a switching frequency of 12.5 kHz at the boost stage and 100 kHz at the full-bridge stage for optimum performance. The solar efficiency of the system is improved using the Incremental Conductance (IC) MPPT methodology.
Medicinal metabolites with common biosynthetic pathways in Solanum nigrum
Anitha Jabamalairaj,Ryza A. Priatama,허정,박순주 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.4
Solanum nigrum is a medicinal plant belonging to the Solanaceae family. It possesses various therapeutic properties such as anticancer, antioxidant, hepatoprotective, antiulcer, antiinflammatory, antihyperlipidemic, antidiabetic, antibacterial, and antiseizure properties. Numerous secondary metabolites have been isolated from S. nigrum, including (+) syringaresinol (II), (+)-medioresinol (III), scopoletin (IV), tetracosanoic acid (V), and beta-sitosterol (IV). They also contain a variety of toxic secondary metabolites such as alpha-Solanine and alpha-Chaconine, which are steroidal glycoalkaloids. Here, we showed the potential of CRISPR/Cas9 technology to improve and enhance the plant architecture, secondary metabolites, and therapeutic applications in eliminating toxic compounds, especially solanine and chaconine, in S. nigrum.
A. Anitha,V.G. Kalpana,P. Muthupriya 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.1
The performance of Light Weight Self-Compacting Concrete (LWSCC) incorporated with Sintered Fly Ash and Vermiculiteare investigated in this study. The robustness and hardened properties of the LWSCC is investigated at diverse proportioningrates where Cement, Fine Aggregate and Coarse Aggregate are replaced with Fly Ash (FA) (25%), Vermiculite (1-9%) andSintered Fly Ash (SFA) (10-50%) respectively. The workability properties such as Filling ability, Passing ability, viscosity andthe mechanical properties such as density, compressive strength, tensile strength, flexural strength, ultrasonic pulse velocity,acid and sulphate resistance were studied. The percentage loss in weight and loss in compressive strength due to Acid attackand Sulphate attack at the age of 28 days of LWSCC were observed by immersing in 10% of HNO3, magnesium sulphate andsodium sulphate solutions. Vermiculite with SFA considerably boosted the workability and mechanical properties of LWSCCmixes. The presence of lightweight aggregates reduced the strength loss caused by sodium and magnesium sulphate ions. Acombination of 5% of Vermiculite and 30% of SFA resulted with the best robustness and hardened property of concrete
Automatic Extraction of Vertebral Endplates from Scoliotic Radiographs Using Customized Filter
Anitha H.,Karunakar A. K.,Dinesh K. V. N. 대한의용생체공학회 2014 Biomedical Engineering Letters (BMEL) Vol.4 No.2
Purpose The scoliosis diagnosing system needs radio-graphicinformation in terms of spinal curvature estimated usingCobb’s definition. The evaluation process and treatmentanalysis depends on the reliability and reproducibility of thespine curvature in the frontal view. Methods Manual identification of end vertebrae and otheranatomical features required for the estimation of spinalcurvature causes variability and unreliability at higher rate. This paper proposes an automated system to extract therequired anatomical features using customized filter. Thecustomized filter used in this paper is a combination ofanisotropic, sigmoid and differential filter. Combination ofthese filters automatically extracts the anatomical features interms of required vertebral endplates. Automatic identificationof these endplates eliminates the human intervention involvedin the quantification of Cobb angle. Results and Conclusions Analysis of the results revealssignificant difference between the observer variabilitybetween manual, computer assisted and computerized imageunderstanding system in terms of inter and intra crosscorrelation coefficient ratio (ICCR).
Devadoss, Anitha,Sudhagar, P.,Das, Santanu,Lee, Sang Yun,Terashima, C.,Nakata, K.,Fujishima, A.,Choi, Wonbong,Kang, Yong Soo,Paik, Ungyu American Chemical Society 2014 ACS APPLIED MATERIALS & INTERFACES Vol.6 No.7
<P>We report the fabrication of graphene–WO<SUB>3</SUB>–Au hybrid membranes and evaluate their photocatalytic activity towards glucose oxidase mediated enzymatic glucose oxidation. The dual-functionality of gold nanoparticles in the reinforcement of visible light activity of graphene–WO<SUB>3</SUB> membranes and improving the catalytic activity of immobilized enzymes for unique photoelectrochemical sensing application is demonstrated. This work provides new insights into the fabrication of light-sensitive hybrid materials and facilitates their application in future.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2014/aamick.2014.6.issue-7/am4058925/production/images/medium/am-2013-058925_0011.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am4058925'>ACS Electronic Supporting Info</A></P>
Sudhagar, P.,Devadoss, Anitha,Song, Taeseup,Lakshmipathiraj, P.,Han, Hyungkyu,Lysak, Volodymyr V.,Terashima, C.,Nakata, Kazuya,Fujishima, A.,Paik, Ungyu,Kang, Yong Soo The Royal Society of Chemistry 2014 Physical chemistry chemical physics Vol.16 No.33
<P>We demonstrate one-step gold nanoparticle (AuNP) coating and the surface nitridation of TiO<SUB>2</SUB> nanowires (TiO<SUB>2</SUB>-NWs) to amplify visible-light photon reflection. The surface nitridation of TiO<SUB>2</SUB>-NW arrays maximizes the anchoring of AuNPs, and the subsequent reduction of the band gap energy from 3.26 eV to 2.69 eV affords visible-light activity. The finite-difference time-domain (FDTD) simulation method clearly exhibits the enhancement in the strengths of localized electric fields between AuNPs and the nanowires, which significantly improves the photocatalytic (PC) performance. Both nitridation and AuNP decoration of TiO<SUB>2</SUB>-NWs result in beneficial effects of high (e<SUP>−</SUP>/h<SUP>+</SUP>) pair separation through healing of the oxygen vacancies. The combined effect of harvesting visible-light photons and reducing recombination in Au/N-doped TiO<SUB>2</SUB>-NWs promotes the photocatalytic activity towards degradation of methyl orange to an unprecedented level, ∼4 fold (1.1 × 10<SUP>−2</SUP> min) more than does TiO<SUB>2</SUB>-NWs (2.9 × 10<SUP>−3</SUP> min<SUP>−1</SUP>). The proposed AuNP decoration of nitridated TiO<SUB>2</SUB>-NW surfaces can be applied to a wide range of n-type metal oxides for photoanodes in photocatalytic applications.</P> <P>Graphic Abstract</P><P>Maximizing the Au nanoparticle decoration on TiO<SUB>2</SUB> nanowire through nitrogen doping for simultaneous enhancement in visible light scattering and electron–hole charge separation. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cp02009j'> </P>