We construct new two dimensional unoriented superstring theories in two dimensions with a chiral closed string spectrum and show that anomalies cancel upon supplying the appropriate chiral open string degrees of freedom imposed by tadpole cancellation. 8/2005 1 [email protected]

The tadpole cancellation in the unoriented Liouville theory is discussed. Using two different methods — the free field method and the boundary-crosscap state method, we derive one-loop divergences. Both methods require two D1-branes with the symplectic gauge group to cancel the orientifold tadpole divergence. However, the finite part left is different in each method and this difference is studi...

We study a multiuser detection system using code division multiple access (CDMA). We show that applying multistage hard decision parallel interference cancellation (HD-PIC) significantly improves performance compared to the matched filter system. In (multistage) HD-PIC, estimates of the interfering signals due to other users are used iteratively to improve knowledge of the desired signal. We us...

Successive Interference Cancellation is a promising technique for increasing the capacity of uplink CDMA channels. Fundamental research has shown that in an AWGN channel, the technique can approach the Shannon capacity[1]. However, a multipath channel presents a difficult challenge for interference cancellation, as each multipath component separated by more than a chip time appears to the recei...

It has been proved previously that in the field of microwave absorption, film and material are confused, impedance matching theory (IM) which is usually applied to metal-backed inadequate. By analysis experimental data from a novel theoretical perspective, it elaborated here problems with IM cannot be solved even if different criteria such as value |Zin - Z0| or phase difference between Zin (in...

We algebraically prove the cancellation of the β function at all order of perturbation theory of N = 2 supersymmetric gauge theories with a vanishing one-loop β function. The proof generalises that recently given for the N = 4 case. It uses the consistent Slavnov–Taylor identities of the shadow dependent formulation. We also demonstrate the cancellation at all orders of the anomalous dimensions...

Background Is G-CSF has any effects on cancelled ART cycle due to thin endometrium. This study showed the beneficial effects of G-CSF on thin endometrium. In two previous studies, some beneficial effects were reported and in another no effects were seen. MaterialsAndMethods In a nonrandomized clinical trial, fifteen cases were evaluated from June 2011 till September 2012. All cases had history ...