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Overlap Frequency Domain Equalization for Wavelet OFDM
Sohaib Kiani,Sabia Baig,M. Junaid Mughal 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
Wavelet-OFDM is a promising alternative to the well established Fourier Transform based OFDM (DFT-OFDM). The Wavelet OFDM does not utilize Cyclic Prefix, due to which its symbols are no longer cicularly convolved, thereby producing Inter Block Interference, after transmission through the channel. In this paper Overlap Frequency Domain Equalizer has been used to minimize BER, due to residual Inter Block Interference for Wavelet-OFDM. Moreover, BER performance has been compared between Wavelet OFDM with Overlap-FDE, DFT-OFDM without Gaurd Interval and Overlap FDE, Conventional OFDM with Gaurd Interval and simple FDE.
Structural identification and seismic performance of brick chimneys, Tokoname, Japan
Aoki, T.,Sabia, D. Techno-Press 2005 Structural Engineering and Mechanics, An Int'l Jou Vol.21 No.5
Dynamic and static analyses of existing structures are very important to obtain reliable information relating to actual structural properties. For this purpose a series of material test, dynamic test and static collapse test of the existing two brick chimneys, in Tokoname, are carried out. From the material tests, Young's modulus and compressive strength of the brick used for these chimneys are estimated to be 3200 MPa and 7.5 MPa, respectively. The results of static collapse test of the existing two brick chimneys are discussed in this paper and composed with the results from FEA (Finite Element analysis). From the results of dynamic tests, the fundamental frequencies of Howa and Iwata brick chimneys are estimated to be about 2.69 Hz and 2.93 Hz, respectively. Their natural modes are identified by ARMAV (Autoregressive Moving Average Vectors) model. On the basis of the static and dynamic experimental tests, a numerical model has been prepared. According to the European code (Eurocode n. 8: "Design of structures for earthquake resistance") non-linear static (Pushover) analysis of the two chimneys is carried out and they seem to be vulnerable to earthquakes with 0.25 to 0.35 g.
Cellular normoxic biophysical markers of hydroxyurea treatment in sickle cell disease
Hosseini, Poorya,Abidi, Sabia Z.,Du, E,Papageorgiou, Dimitrios P.,Choi, Youngwoon,Park, YongKeun,Higgins, John M.,Kato, Gregory J.,Suresh, Subra,Dao, Ming,Yaqoob, Zahid,So, Peter T. C. National Academy of Sciences 2016 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.113 No.34
<P>Hydroxyurea (HU) has been used clinically to reduce the frequency of painful crisis and the need for blood transfusion in sickle cell disease (SCD) patients. However, the mechanisms underlying such beneficial effects of HU treatment are still not fully understood. Studies have indicated a weak correlation between clinical outcome and molecular markers, and the scientific quest to develop companion biophysical markers have mostly targeted studies of blood properties under hypoxia. Using a common-path interferometric technique, we measure biomechanical andmorphological properties of individual red blood cells in SCD patients as a function of cell density, and investigate the correlation of these biophysical properties with drug intake as well as other clinically measured parameters. Our results show that patient-specific HU effects on the cellular biophysical properties are detectable at normoxia, and that these properties are strongly correlated with the clinically measured mean cellular volume rather than fetal hemoglobin level.</P>