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Proximity-based video delivery architecture for LTE networks
Singh, S.,Saxena, N.,Roy, A.,De, P. IET 2016 Electronics letters Vol.52 No.11
<P>Out of total mobile data traffic, mobile video traffic accounts for 55%. Massive increase in mobile video traffic trend and simultaneous proliferation in smart devices strains the expanding cellular network that triggers the demand to retain the quality of video. To fortify this challenge, proximity-based video delivery architectures are put forward. Four novel architectures are proposed depending on the location of the users, which tends to reduce load on video servers and core network elements. Through realistic simulation results, it is proved that the present system procures up to 69.15% increase in throughput, 40.81% decrease in end-to-end delay and 92% reduction in jitter as compared with the traditional 4G long term evolution (LTE)/LTE-A system. The proposed video dispatching architecture outperforms the existing strategy by 53% and increases the cell capacity up to four times compared with the current 4G LTE/LTE-A networks.</P>
Thermal transport and its structure dependence in ZnxSe100?x (x = 10, 20, 40 and 50) alloys
Rakesh Sharma,S.N. Dolia,T.P. Sharma,N.S. Saxena 한국물리학회 2006 Current Applied Physics Vol.6 No.5
Simultaneous measurements of eective thermal conductivity (ke) and eective thermal diusivity (ve) of twin pellets ofZnxSe100. x (x . 433 MPa), havebeen made at room temperature using transient plane source (TPS) technique. From the measured values ofke and ve specic heatper unit volume (Cp) has been calculated. The results indicate that both the values ofke and ve increase linearly with increasing Znconcentration. Similar toke and ve, theCp also shows a linear increase with the increase in Zn concentration. This behaviour ofkeand ve with increasing Zn concentration can be explained using structural information obtained from X-ray diraction (XRD) ofthese materials and also using the change in the nature of bond from covalent to iono-covalent in this system. Comparative XRDstudies for structural investigation of ZnxSe100. x (x = 10 and 40) have also been discussed. An eort has also been made to predictvalues ofke,ve and calculated values ofCp.
Vibhav K. Saraswat,K. Singh,N.S. Saxena,V. Kishore,T.P. Sharma,P.K. Saraswat 한국물리학회 2006 Current Applied Physics Vol.6 No.1
Measurements ofIV characteristics and DC electrical conductivity of Se85. xTe15Sbx (wherex = 2, 4, 6, 8 and 10) glassy thinpellets, prepared by well established melt quenching technique in bulk (pellets of diameter 12mm and thickness. 1m were pre-pared under a constant load of 5 tons), have been carried out at room temperature using Keithley High Resistance Meter/Electrom-eter 6517A. For the recording ofIV characteristics, this equipment was used in FVMI (Force Voltage Measure Current) mode. It isIV characteristics that the glass containing 4 at. wt.% of Sb has the minimum resistance allowing maximumcurrent through the sample as compared to the other at. wt.% of Sb contents e.g. 2, 6, 8 and 10.At 4 at. wt.% of Sb, conductivityrises to 76% of the value obtained for 2 at. wt.% of Sb. Composition dependence of DC conductivity is discussed in terms of thebond formation between Se and Sb at dierent compositions. The conduction mechanism is discussed qualitatively on the basisof PooleFrenkel conduction mechanism. Also the linear relation between ln (I) and V1/2veries that the conduction mechanismis of PooleFrenkel type for both low and high voltage range. The deviation of ohmic behaviour at lower voltage range towardsthe non-ohmic at higher voltage range is due to the high voltage induced temperature eects in the sample.
Shaktawat, Vinodini,Pothan, Laly A.,Saxena, N.S.,Sharma, Kananbala,Sharma, T.P. The Korean Society for Composite Materials 2008 Advanced composite materials Vol.17 No.1
Using a Dynamic Mechanical Analyzer (DMA), mechanical properties like modulus and phase transition temperature of polyester composites of banana fibers (treated and untreated) are measured simultaneously. The shifting of phase transition temperature is observed in some treatments. The performance of the composite depends to a large extent on the adhesion between polymer matrix and the reinforcement. This is often achieved by surface modification of the matrix or the filler. Banana fiber was modified chemically to achieve improved interfacial interaction between the fiber and the polyester matrix. Various silanes and alkalies were used to modify the fiber surface. Chemical modification was found to have a profound effect on the fiber/matrix interaction, which is evident from the values of phase transition temperatures. Of the various chemical treatments, simple alkali treatment with 1% NaOH was found to be the most effective.
Kedar Singh,Abhay Kumar Singh,N.S. Saxena 한국물리학회 2008 Current Applied Physics Vol.8 No.2
Measurement of eective thermal conductivity (ke) and eective thermal diusivity (ve) of twin pellets of Se90In10 bulk chalcogenideglass has been carried out in the temperature range from 303 to 323 K and cooling from 323 to 303 K using transient plane source (TPS)technique. In the heating process variation of eective thermal conductivity (ke) and eective thermal diusivity (ve) is observed. Bothquantities are found to be maximum at 313 K, which lies in the vicinity of glass transition temperature (Tg). During the cooling processkeand ve remain same at all temperatures. Such type of behavior shows thermal hysteresis in this sample, which can be explained on thebasis of structural change of the Se90In10 bulk chalcogenide glass.
Singh, R.P.,Sastry, K.V.H.,Pandey, N.K.,Shit, N.G.,Agarwal, R.,Singh, R.,Sharma, S.K.,Saxena, V.K.,Jagmohan, Jagmohan Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.8
The LDH isozymes are key catalysts in the glycolytic pathway of energy metabolism. It is well known that the distribution of the LDH isozymes vary in accordance with the metabolic requirements of different tissues. The substrates required for energy production change noticeably at successive stages of testes development suggesting a significant flexibility in the expression of glycolytic enzymes. Therefore, expression of LHDA and LDHB mRNAs was examined in adult and prepubertal quail testis. The mRNA of both LDHA and LDHB were expressed and no significant difference was observed in prepubertal testes. The mRNA levels of LDHB significantly increased during testicular development. In the adult testis, LDHA mRNA was not expressed. Expression studies revealed the presence of different LDH isozymes during testicular development. In contrast, electrophoresis of both testicular samples revealed only single band at a position indicative of an extreme type of LDH isozyme in quail testes. Furthermore, nucleotide and amino acid sequence analysis revealed significant similarity to chicken, duck and rock pigeon. These sequence results confirmed the similarity of LDHA and LDHB subunit protein in different avian species.