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Spatio-temporal protocol for power-efficient acquisition wireless sensors based SHM
Bogdanovic, Nikola,Ampeliotis, Dimitris,Berberidis, Kostas,Casciat, Fabio,Plata-Chaves, Jorge Techno-Press 2014 Smart Structures and Systems, An International Jou Vol.14 No.1
In this work, we address the so-called sensor reachback problem for Wireless Sensor Networks, which consists in collecting the measurements acquired by a large number of sensor nodes into a sink node which has major computational and power capabilities. Focused on applications such as Structural Health Monitoring, we propose a cooperative communication protocol that exploits the spatio-temporal correlations of the sensor measurements in order to save energy when transmitting the information to the sink node in a non-stationary environment. In addition to cooperative communications, the protocol is based on two well-studied adaptive filtering techniques, Least Mean Squares and Recursive Least Squares, which trade off computational complexity and reduction in the number of transmissions to the sink node. Finally, experiments with real acceleration measurements, obtained from the Canton Tower in China, are included to show the effectiveness of the proposed method.
Spatio-temporal protocol for power-efficient acquisition wireless sensors based SHM
Nikola Bogdanovic,Dimitris Ampeliotis,Kostas Berberidis,Fabio Casciati,Jorge Plata-Chaves 국제구조공학회 2014 Smart Structures and Systems, An International Jou Vol.14 No.1
In this work, we address the so-called sensor reachback problem for Wireless Sensor Networks, which consists in collecting the measurements acquired by a large number of sensor nodes into a sink node which has major computational and power capabilities. Focused on applications such as Structural Health Monitoring, we propose a cooperative communication protocol that exploits the spatio-temporal correlations of the sensor measurements in order to save energy when transmitting the information to the sink node in a non-stationary environment. In addition to cooperative communications, the protocol is based on two well-studied adaptive filtering techniques, Least Mean Squares and Recursive Least Squares, which trade off computational complexity and reduction in the number of transmissions to the sink node. Finally, experiments with real acceleration measurements, obtained from the Canton Tower in China, are included to show the effectiveness of the proposed method.
A simulation on the periodic dielectric structures incorporating frequency-selective characteristics
Mph. Sc. Zoran Bogdanovic 중소기업융합학회 2015 중소기업융합학회 국제학술대회논문집 Vol.2 No.1
We investigate the frequency-selective reflection and transmission in a planar rectangular grating. A frequency selective characteristic is studied using analytical method. It is well known that total reflection occurs at desired frequency for proper choices of grating layer thickness and index difference
Determination of Texture Degree of NdFeB-Magnets by Means of Neutron Diffraction
Teplykh, A.E.,Bogdanov, S.G.,Choi, Yong,Kudrevatykh, Nikolai V.,Pirogov, A.N.,Popov, A.G.,Skryabin, Yu.N.,Vyatkin, V.P. Trans Tech Publications, Ltd. 2010 Diffusion and defect data. SSP. [Pt. B], Solid sta Vol.168 No.-
<P>Six samples of Nd-Fe-B-permanent magnets, distinguished in the texture degree, have been measured by neutron diffraction in the reflection and transmission regimes. The texture in the samples was formed by application of impulses of external magnetic field 0H = 4 T. Analysis of the obtained neutron diagrams by means of the Fullprof program allowed quantitative determination of the texture degree and conclusion to be made that the texture degree grows with an increase in numbers of magnetic field impulses.</P>
The Influence of Alpha-fetoprotein on Natural Suppressor Cell Activity and Ehrlich Carcinoma Growth
Belyaev, Nikolai Nikolaevich,Bogdanov, Andrei-Yurievich,Savvulidi, PhiIipp-Gorgievich,Krasnoshtanov, Vladimir-Konstantinovich,Tleulieva, Raikhan-Tleulievna,Alipov, Gabit-Kaimovich,Sekine, Ichiro,Bae, The Korean Society of Pharmacology 2008 The Korean Journal of Physiology & Pharmacology Vol.12 No.4
The influence of alpha-fetoprotein (AFP) on the bone marrow (BM) natural suppressor (NS) cells of intact Ehrlich carcinoma -bearing CBA mice was studied. Bone marrow NS cells were fractionated into three fractions by isopycnic centrifugation on percoll gradients: NS1 (${\rho}$=1.080 g/ml), NS2 (${\rho}$=1.090 g/ml) and NS3 (1.100> ${\rho}$ > 1.090 g/ml). These fractions were highly different in their sensitivity to known NS cell inductors (interleukin (IL)-2, IL-3 or histamine). None of the NS fractions isolated from the intact mice spontaneously produced antiproliferative activity, however, they showed a high level of NS (antiproliferative and natural killer cell inhibitory) activity under the influence of AFP. A single injection of AFP to intact mice led to an increase of spontaneous NS activity and the inhibition of natural killer cell activity. NS activity, especially NS2, was increased in when tumor cells were subcutaneously inoculated three days after AFP injection. In the AFP-treated mice, the tumor mass at 14 days was 60% larger than that in the untreated mice. Our data confirmed that AFP is a tumor marker that can inhibit cancer immunity and plays a role in cancer pathogenesis.