Kochar B.,GNIM |
International Arab Journal of Information Technology | Year: 2012
Nowadays, the vital parts of the business programs are the Data warehouses and the Data mining techniques. Especially these are vital in the RFID application which brings a revolution in business programs. Manufacturing, the logistics distribution and various stages of supply chains, retail store and quality management applications are involved in the RFID technology in business. A large volume of temporal and spatial data is generated by the ubiquitous computing and sensor networks of RFID and these are often generated with noises and duplicates. The noises and duplicates in the RFID data declare the need of an effective data warehousing system. The warehousing system has the responsibility to provide proper data cleaning technique to clean the dirty data which occurs in the applications. Also, the cleaned data has to be transformed and to be loaded properly so that they can be stored in the database with minimum space requirements. In this paper, we propose a novel data cleaning, transformation and loading technique which makes the data warehousing system employed for any RFID applications more effective. The chosen RFID application is tracking of goods in warehouses using RFID tags and readers, one of the significant RFID applications. The data cleaning is performed based on the probability of each RFID tag's response and the window size which is made adaptive. The window size changes on the basis of the occurrence of the dirty data and hence the cleaning is more effective. The purified data is transformed in a special structure in such a way that the ware house can have only the tag IDs which are under transaction and the time of interrogation in the size of bits. The transformed data are loaded into the warehouse using the proposed loading technique in a dedicated tabular format.
Singh A.,TIT and S |
International Conference on Advanced Computing and Communication Technologies, ACCT | Year: 2013
Recently, Lee et. al. carried out the cryptanalysis of Juang et. al. two-factor authentication key exchange protocol in Public wireless LANs. It was shown that Juang et.al. protocol is vulnerable to the stolen verifier attack and doesn't satisfy the user anonymity. Apart from the, high computational overhead of the server. This paper, proposes an improved protocol towards authentication and key exchange based on Elliptic Curve Decision Diffie-Hellman(DDH) problem which ensures their strong resistance towards the existing weaknesses. Besides this, their security and performance analysis shows that the proposed protocol is more secure and efficient. © 2013 IEEE.
Sharma M.,Mduniversity |
Khola R.K.,P.A. College
Advances in Intelligent and Soft Computing | Year: 2012
Wireless networking is becoming an increasingly important and popular way of providing global information access to users on the move. One of the main challenges for seamless mobility is the availability of simple and robust vertical handoff algorithms, which allow a mobile node to roam among heterogeneous wireless networks. The next generation of mobile networks will support not just simple mobile connectivity but access to evolving smart space environments. In this paper, we propose a novel vertical handoff decision algorithm for overlay wireless networks consisting of heterogeneous wireless environment. This paper presents the proposal of optimal network selection algorithm in wireless heterogeneous environment that is based on TOPSIS method when solving the multi criteria analysis. The target network is selected using TOPSIS based decision algorithm which, in addition to usual parameters, also takes a prediction of the RSS into account © 2012 Springer-Verlag GmbH.
Sharma A.,Mduniversity |
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2012
CuXZn1-XO(X= 0.1,0.3,0.5,0.7,0.9) nanocomposites has been synthesized by a Sol-Gel method based on polymeric network of polyvinyl alcohol(PVA). In this method mixture solvent of 50:50 ethanol water was used to dissolve copper nitrate, zinc nitrate and PVA. The mixture was heated to 80oC to form homogeneous gel solution. The obtained gel was slowly heated to evaporate the solvent to form a hard homogeneous gel. The hard gel was calcinated at a temperature of 600o C for 4 hours and 8 hours and converted into nanocomposites. The prepared nanocomposites have been characterized using X-Ray Diffraction (XRD), SEM, FTIR, UV-VIS. In the observed spectral features, the peak position, intensity and bandwidth were related to structural properties of investigated samples. The size of nanocomposites heated at 600o C for 4h and 8 h were calculated using Debye-Scherrer formula. In all the samples, it was observed that particle size increases, when we increase the time of calcinations from 4h to 8 h at fixed temperature of 600o C. The range of nanocomposites comes out from 15.8 nm to 21.0 nm. SEM images shows nanocomposite are of spherical and uniform shape. In UV-VIS spectra, there is increase in absorption in UV region sharply and linearly in visible region in most of samples. FTIR spectra of samples is used as a unique collection of absorption bands to confirm the presence of different compounds in samples.
Indian Journal of Public Health Research and Development | Year: 2013
This research paper attempts to collate literature from various sources, in an attempt to answer four pertinent questions related to private health care in India. Firstly, emerging relationship between private health care and market, secondly how the private health care sector is delivering health in terms of its quality; thirdly what is the structure and pattern of health care from the provider's perspective? Finally, the paper tries to highlight some of the dehumanizing issues/aspects in private health care which are relevant for the consumers of health care. Markets in the health care are also governed by the purchasing power of the individuals in society. They are not democratic institutions and it results into the marginalization of the marginal. It is evident that the private health sectors attracts and treat persons who can pay more hence it is selective. Quality of health care in private sector is a myth as in private sector job insecurity and poor working conditions bound to affect the quality of care provided to the patients. Private health care professionals are essentially for the sale and use of goods produced by the health care industry. User charges, usage of high tech diagnostic tools, irrational diagnosis, and technology for money has become a culture of practice for the doctors. Professionals in healthcare defend unfair and trade practices which sometimes leads to the unethical practices under the garb of professional independence.
Batra B.,Mduniversity |
RSC Advances | Year: 2014
We describe the construction of a new enzyme electrode (glutamate oxidase/carboxylated multiwalled carbon nanotubes/gold nanoparticles/chitosan/gold electrode: GluOx/cMWCNT/AuNPs/CHIT/Au) and its application for the amperometric determination of β-ODAP (3-N-oxalyl-l-2,3-diaminopropanoic acid) in Lathyrus seeds. The enzyme electrode was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The biosensor showed an optimum response within 2 s at pH 7.5 and 35 °C when operated at 0.135 V. A good linear relationship was observed between the biosensor response, i.e. the current (mA), and l-glutamate (Glu) concentration in the range of 2-550 μM. The biosensor had a detection limit of 2.32 μM with a high sensitivity of 486.31 μA cm-2 μM-1. The biosensor measured β-ODAP in a glutamate-free Lathyrus seed extract. The results for ODAP efficiently correlated (r = 0.9969) with those by the standard colorimetric method. The enzyme electrode lost only 35% of its initial activity after its 70 regular uses over a period of 90 days. This journal is © the Partner Organisations 2014.
Solanki R.,Mduniversity |
Journal of Environmental Biology | Year: 2011
The effect of deleterious concentration of zinc and copper provided either individually or in combination in the nutrient media was investigated in order to assess the effect of metal interaction in Vigna mungo (L.). Both metals showed negative effect and led to a marked decrease in seed germination (20%), seedling growth (91.7%) and nitrate reductase activity (85.7%) with the increase in metal concentrations. The present study also emphasizes on the response of catalase and peroxidase enzyme under zinc and copper stress. Both antioxidant enzymes exhibited an increasing trend under different treatment conditions but it was reverse at highly toxic metal concentration. The results showed active involvement of peroxidase enzyme in regulating oxidative stress rather than catalase enzyme, as the specific activity of peroxidase enzyme got increased by 8.94% under the combined metals stress whereas catalase activity got declined by 60.97% in comparison to control due to excessive stress. The combined effect of copper and zinc metal was more pronounced in comparison to their individual effects.
Batra B.,Mduniversity |
Yadav M.,Mduniversity |
Biochemical Engineering Journal | Year: 2016
A method is described for the construction of a highly sensitive electrochemical biosensor for the detection of l-glutamate. Such a biosensor is based on immobilization of glutamate oxidase (GluOx) onto zinc oxide nanorods (ZnONRs)/polypyrrole (PPy) composite. This composite was electro-deposited onto a pencil graphite (PG) electrode. The enzyme electrode was characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), Fourier transform infra-red spectroscopy (FTIR) and cyclic voltammetry (CV). The biosensor showed optimum response at pH 8.5 (0.1 M Tris-HCl buffer) and 30°C, when operated at 20 mV s-1. The biosensor exhibited excellent sensitivity (detection limit as 0.18nM), fast response time (less than 5s) and wide linear range (0.02-500 μM). Analytical recovery of added l-glutamate (20 and 40 μM) in commercial Chinese soup were 95.40 and 97.56% respectively. The within batch and between batch coefficients of variation (CV) in measurement of l-glutamate in commercial Chinese soup were 2.35% and 4.5% respectively. The enzyme electrode lost 30% of its initial activity after 100 uses over a period of 90 days, when stored at 4°C. © 2015 Elsevier B.V.
Bhateria R.,Mduniversity |
International Journal of Pharma and Bio Sciences | Year: 2014
The present study was an attempt to explore the efficiency of indigenous bacterium isolated from the effluent of Electroplating Industry in transforming hexavalent chromium into trivalent chromium. The isolated bacterium was characterized on the basis of its morphological, biochemical and physiological properties as Salmonella sp.S4. Response Surface Methodology (RSM) based on a three-level three-variable Box-Behnken experimental design was employed to study the interactive effect of three vital parameters viz pH (4-8), temperature (25°-35°C) and initial Cr(VI) ion concentration (10-40 mgl-1) on biotransformation of Cr(VI) ions. Experimental result concluded that using optimum conditions of pH 6.0, temperature 30oC and initial Cr(VI) ion concentration 25 mg/L, maximum Cr(VI) transformation of 74% could be achieved which was in close agreement with the model values. Statistical analysis involving analysis of variance (ANOVA) and Student's t-test were performed which gave coefficient of determination (R2) value 0.9584, model F- value 17.90 and low P-value (F < 0.0005) ensured fitness of second order polynomial equation with experimental data.
Kumar A.,Mduniversity |
Vashist M.,Mduniversity |
Asian Pacific Journal of Cancer Prevention | Year: 2014
Background: Although the cause in most cases of childhood leukemia is not known, the contribution of environmental risk factors in the context of genetic predisposition has been reported with inconsistent results. The aim of this study was to examine association of childhood leukemia with maternal factors especially during pregnancy, to help in avoiding risk factors. Materials and Methods: This case-control study included children younger than 18 years diagnosed with leukemia from 2008 to 2012. Controls were randomly selected and individually matched to cases with respect to age, sex, and residency. All variables were compared between cases and control to determine any significant association with leukemia. Results: Statistically significant associations between risk of childhood leukemia with mother's education (p=0.001), occupation (p=0.0005) and pesticides exposure (p=0.005) during pregnancy were found. However, there were no significant links with maternal age (p=0.090), history of fetal loss (0.85), history of radiography during pregnancy (p=0.400), history of drug intake (p=0.689) and infection (p=0.696) during pregnancy. Conclusions: The results showed increased risk of leukemia in children whose mothers were working in agriculture and were exposed to pesticides during pregnancy. The further study needs to be investigated to know association of various maternal risk factors with leukemia which remained unknown in this study.