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Secured healthcare monitoring system in wireless body area network using polynomial based technique

Abstract

Nowadays healthcare is a standout amongst the most rapidly developing application zone in body area networks (BANs). BANs are anticipated to play a significant role in the stream of patient-health monitoring. To provide, secure BAN access to the entire system without disturbing the confidentiality of patients’ therapeutic data is a major challenge. Security of the BAN can be improved by using a polynomial curve-based steganography technique. The performance of the proposed BAN is evaluated by using a Fourier transform and Wavelet transform. The results of the proposed BAN are presented and compared for both the transforms.

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Automated MTF measurement in CT images with a simple wire phantom

References [1] Verdun FR, Racine D, Ott JG, et al. Image quality in CT: From physical measurements to model observers. Phys Med. 2015;31(8):823-843. [2] International Atomic Energy Agency. Status of computed tomography: Dosimetry for wide cone beam scanners. IAEA-Human Health Reports No 5. 2011. [3] Kalender WA, Seissler W, Klotz E, Vock P. Spiral volumetric CT with single-breath-hold technique, continuous transport, and continuous scanner rotation. Radiology. 1990;176(1):181-183. [4] McCollough CH, Zink FE. Performance evaluation of a

Open access
SIMU-RAD programme: a learning tool for radiation (photons and charged particles) interaction

References [1] Harrison RL. Introduction to Monte Carlo Simulation. AIP Conf Proc. 2010;1204:17-21. [2] Metropolis N, Ulam S. The Monte Carlo Method. J Am Stat Assoc. 1949;44(247)335-341. [3] Hirayama H, Namito Y. Lecture Notes of Radiation Transport Calculation by Monte Carlo Method. KEK Internal.2001;2000-20. [4] Dimov IT, Tonev OI. Monte Carlo Algorithms: Performance Analysis for Some Computer Architectures. J Comput Appl Math. 1993;48(3):253-277. [5] Peter Ziegenhein, Pirner S, Ph Kamerling C, Oelfke U. Fast CPU-based Monte Carlo

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A GATE Monte Carlo model for a newly developed small animal PET scanner: the IRI-microPET

References [1] Merheb C, Petegnief Y, Talbot N. Full modeling of the MOSAIC animal PET system based on the GATE Monte Carlo simulation code. Phys Med Biol. 2007;52(3):563-576. [2] Merheb C, Nicol S, Petegnief Y et al. Assessment of the Mosaic animal PET system response using list-mode data for validation of Gate Mote Carlo modeling. Nucl Inst Meth A. 2006;569(2):220-224. [3] Rannou FR, Kohli V, Prout DL, et al. Investigation of OPET performance using GATE, a Geant4-based simulation software. IEEE Trans Nucl Sci. 2004;51(5):2713-2717. [4

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Experimental investigation on radiation shielding of high performance concrete for nuclear and radiotherapy facilities

Abstract

This paper presents the set of procedures developed in Radiation Protection Measurements Laboratory at National Centre for Nuclear Research for evaluation of shielding properties of high performance concrete. The purpose of such procedure is to characterize the material behaviour against gamma and neutron radiation. The range of the densities of the concrete specimens was from 2300 to 3900 kg/m3. The shielding properties against photons were evaluated using 137Cs and 60Co sources. The neutron radiation measurements have been performed by measuring the transmitted radiation from 239PuBe source. Scattered neutron radiation has been evaluated using the shadow cone technique. A set up of ionization chambers was used during all experiments. The gamma dose was measured using C-CO2 ionization chamber. The neutron dose was evaluated with recombination chamber of REM-2 type with appropriate recombination method applied. The method to distinguish gamma and neutron absorbed dose components in mixed radiation fields using twin detector method was presented. Also, recombination microdosimetric method was applied for the obtained results. Procedures to establish consecutive half value layers and tenth value layers (HVL and TVL) for gamma and neutron radiation were presented. Measured HVL and TVL values were linked with concrete density to highlight well known dependence. Also, influence of specific admixtures to concrete on neutron attenuation properties was studied. The results confirmed the feasibility of approach for the radiation shielding investigations.

Open access
Effect of Cu2O Morphology on Photovoltaic Performance of P-Type Dye-Sensitized Solar Cells

Abstract

Cuprous oxide with different morphologies (3D hierarchical structure consisting of the micrometer dendritic rods and the porous truncated octahedrons) has been successfully synthesized via a facile one-step hydrothermal method using copper (II) acetate and ethyl cellulose as reactants. The p-type dye-sensitized solar cell based on the micrometer porous structure exhibits approximately 15% increase in JSC and VOC than 3D hierarchical structure. This enhancement could be explained by the high dye loading capacity of this porous structure and lowering the recombination process at the oxide/dye/electrolyte interface.

Open access
GATE Simulation Study of the Siemens Biograph mCT 20 Excel PET/CT System

) Response for Personalized Optimization of the Administered Activity in Clinical PET Imaging. Frontiers Biomed Technol. 2014;1:14-34. [4] Townsend DW. Physical Principles and Technology of Clinical PET Imaging. Ann Acad Med Singapore. 2004;33(2):133-145. [5] Geramifar P, Ay MR, Shamsaie Zafarghandi M, et al . Performance Comparison of Four Commercial GE Discovery PET/CT Scanners: A Monte Carlo Study Using GATE. Iran J Nucl Med 2009;17(2):26-33. [6] Karakatsanis N, Parasyris A, Loudos G, Nikita K. A Simulation study of the counting rate performance of

Open access
Fluid Flow Control in Domestic Hot Water Systems During Days with Different Radiative Stability Levels

storage tanks Energy Conversion and Management 49 ( 2008) 169–184 [5] V. Badescu, S. Budea, M. Paulescu. Empirical versus optimal control of flow in solar domestic hot water systems. J Energ Eng. 2015, 142 (3) (2015), 15-38 [6] S. Budea, V. Bădescu. Improving the Performance of Systems with Solar Water Collectors Used in Domestic Hot Water Production, Energy Procedia, 112 (2017), 398-403 [7] J. A. Duffie, W.A. Beckman Solar energy thermal processes (New York: Wiley) (1991) [8] I. G. Carabogdan et al. Industrial thermal installations

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A Hybrid Fuzzy-SVM classifier for automated lung diseases diagnosis

Radiol. 1966;1(1), 72-80. [4] Campadelli P, Casiraghi E, Valentini G. Lung nodules detection and classification. ICIP205. IEEE International Conference on Image Processing 2005. 2005: I-1117-1120. [5] Hardie RC, Rogers S, Wilson T, et al. Performance analysis of a new computer aided detection system for identifying lung nodules on chest radiographs. Med Image Anal. 2008;12(3):240-258. [6] Yeung DS, Ng WWY, Wang D, et al. Localized generalization error model and its application to architecture selection for radial basis

Open access
Broadband spectroscopy for characterization of tissue-like phantom optical properties

References [1] Tromberg BJ, Anderson RR, Birngruber RR, et al., Biomedical optics centers: forty years of multidisciplinary clinical translation for improving human health. J Biomed Opt. 2016;21(12):pp. 23-35. [2] Pogue BW, Patterson MS. Review of tissue simulating phantoms for optical spectroscopy, imaging and dosimetry. J Biomed Opt. 2006;11(4):041102-16. [3] Hwang J, Ramella-Roman CJ, Nordstrom R. Introduction: Feature Issue on Phantoms for the Performance Evaluation and Validation of Optical Medical Imaging Devices. Biomed Opt Express. 2012

Open access