Extending group actions on metric spaces

We address the following natural extension problem for group actions: Given a group $G$, a subgroup $H\le G$, and an action of $H$ on a metric space, when is it possible to extend it to an action of the whole group $G$ on a (possibly different) metric space? When does such an extension preserve interesting properties of the original action of $H$? We begin by formalizing this problem and present a construction of an induced action which behaves well when $H$ is hyperbolically embedded in $G$. Moreover, we show that induced actions can be used to characterize hyperbolically embedded subgroups. We also obtain some results for elementary amenable groups

Unthink pink : master narratives and counterstories of breast cancer.

This work examines the construction and impact of the master narrative breast cancer which is supported and reified by the contemporary breast cancer awareness movement. I contend that historical problematic constructions of the female body were interwoven with the beginning of the movement around the turn of the twentieth century. As a partial result, the female body with breast cancer is abject, and therefore subject to policing and discipline. The master narrative of breast cancer, through pinkwashing, enacts this policing and discipline. The master narrative expresses several distinct messages which may be exclusive of the experiences of many people, causing those dealing with breast cancer to struggle to reconstruct their identity in the wake of the illness, and potentially creating epistemic injustice in which the moral agency of those subject to the master narrative is reduced. Through counterstories of breast cancer which resist and replace the master narrative, those who are subject to the master narrative attempt to be included in public discourse, reconstruct their identities, and restore moral v agency. I argue that, for this reason, we, as a culture, must bear witness to these counterstories

M.A.R.S: the charge ratio of muons in the range 20-500 geV/c in the vertical direction

The sae level muon charge ratio in the near vertical direction has been measured using the Durham spectrograph M.A.R.S. in the religion 10 GeV/c to about 500 GeV/c. A detailed description of the apparatus used in the experiment is given. Based on approximately 1.3 x 10(^6) particles the mean ratio, over the whole energy range is found to be l.2850 + 0.0023. This is consistent with previous measurements made with the same instrument and also with results of other workers. No evidence for pronounced maxima or minims in the ratio as a function of momentum is seen. There is however, some indication of a broad maximum in the ratio in the region 20-50 GeV/c followed by a somewhat lower ratio to about 200 GeV/c. Using data from the intersecting storage rings experiment an attempt has been made to estimate the expected muon change ratio at sea level. This estimated ratio is found to be higher than the observed value. The reasons for the discrepancy are thought to be a combination of inadequate pion production data and the effects of intranuclear cascading. Other possible causes - a breakdown in scaling and changes in the primary spectrum are also discussed

Quantifying the Bull's Eye Effect

We have used N-body simulations to develop two independent methods to quantify redshift distortions known as the Bull's Eye effect (large scale infall plus small scale virial motion). This effect depends upon the mass density, $\Omega_0$, so measuring it can in principle give an estimate of this important cosmological parameter. We are able to measure the effect and distinguish between its strength for high and low values of $\Omega_0$. Unlike other techniques which utilize redshift distortions, one of our methods is relatively insensitive to bias. In one approach, we use path lengths between contour crossings of the density field. The other is based upon percolation. We have found both methods to be successful in quantifying the effect and distinguishing between values of $\Omega_0$. However, only the path lengths method exhibits low sensitivity to bias.Comment: 21 pages, 5 figures, 3 tables; Replaced version - minor corrections, replaced figure 2; To appear in ApJ, Jan. 20, 200

Intestinal Microbial Ecology of Broilers Vaccinated and Challenged With Mixed Eimeria Species, and Supplemented with Essential Oil Blends

Intestinal microbiota is an important component in the development of defense mechanisms in the gut mucosa. This project determined the dynamics of intestinal microbial communities (MC) of broilers vaccinated at first day of age with live oocysts of Eimeria species and fed diets supplemented with 2 specific essential oil (EO) blends, Crina Poultry (CP) and Crina Alternate (CA). Five treatments were analyzed: 1) unmedicated-uninfected (UU) control; 2) unmedicated-infected (UI) control; 3) vaccinated with Advent cocci-vaccine and without feed additive (COV) supplements; 4) vaccinated with Advent and supplemented with CP; and 5) vaccinated with Advent and supplemented with CA. The EO blends were added at 100 ppm to the same basal diets. Chicks were gavage-infected at 19 d of age with Eimeria acervulina, Eimeria maxima, and Eimeria tenella. Duodenal, ileal, and cecal samples were taken from 12 birds per treatment just before the infection and 7 d after the challenge, pooled in 6 samples, and frozen. Denaturing gradient gel electrophoresis was used to examine PCR-amplified fragments of the bacterial 16S ribosomal DNA variable region. Results are presented as percentages of similarity coefficients (SC). Dendrograms of amplicon patterns indicated MC differences due to intestinal location, feed additives, and cocci infection. The EO blends CP and CA did affect MC in all gut sections. The cocci-infection caused drastic MC population shifts in duodenal, ileal, and cecal sections (36.7, 55.4, and 36.2% SC, respectively). The CP-supplemented birds had higher SC between pre- and postchallenge MC in duodenal and ileal (73.3, 81.8%) than COV (66.4, 66.5%). However, COV broilers had the smallest changes in cecal MC after infection (79.5% SC). We concluded that cocci-vaccination causes small changes in intestinal MC, but challenge causes drastic shifts. The EO blend supplementation modulates MC in cocci-vaccinated broilers, avoiding drastic shifts after a mixed coccidia infection. Correlations between MC dynamics and host responses are discussed

House Directory, Kennebunk Village, 1933

A local directory of the individuals living at each street and house number in Kennebunk Village in 1933. A timeline of important dates in the history of the village are included as headers and footers on each page, 1603-1930. Also includes advertisements for area businesses

Preparation of Dicke States in an Ion Chain

We have investigated theoretically and experimentally a method for preparing Dicke states in trapped atomic ions. We consider a linear chain of $N$ ion qubits that is prepared in a particular Fock state of motion, $|m>$. The $m$ phonons are removed by applying a laser pulse globally to the $N$ qubits, and converting the motional excitation to $m$ flipped spins. The global nature of this pulse ensures that the $m$ flipped spins are shared by all the target ions in a state that is a close approximation to the Dicke state \D{N}{m}. We calculate numerically the fidelity limits of the protocol and find small deviations from the ideal state for $m = 1$ and $m = 2$. We have demonstrated the basic features of this protocol by preparing the state \D{2}{1} in two $^{25}$Mg$^+$ target ions trapped simultaneously with an $^{27}$Al$^+$ ancillary ion.Comment: 5 pages, 2 figure