The progenitor of the 'born-again' core V605 Aql and the relation to its younger twin V4334 Sgr

We derived the properties of V605 Aql before the final helium flash pulse by studying its surrounding PN A58. Photoionizing models of our spectral data together with a new distance estimate and a closer look at the recombination timescales lead to a consistent model. Comparing our findings with the only hydrogen-poor twin, namely Sakurai's Object, we conclude that these born-again objects have normal PNe core masses. We are able to prove V605 Aql indeed to be, similar to V4332 Sgr, a very late thermal pulse object and to put constraints for the evolutionary time scales for the transition back to the AGB.Comment: LaTeX, 5 pages, 3 figures, Accepted in Astron. & Astrophy

The cancellation of worldsheet anomalies in the D=10 Green--Schwarz heterotic string sigma--model

We determine the two--dimensional Weyl, Lorentz and $\kappa$--anomalies in the $D=10$ Green--Schwarz heterotic string sigma--model, in an $SO(1,9)$-Lorentz covariant background gauge, and prove their cancellation.Comment: 12 pages, Plain TeX, no figure

The Three-User Finite-Field Multi-Way Relay Channel with Correlated Sources

This paper studies the three-user finite-field multi-way relay channel, where the users exchange messages via a relay. The messages are arbitrarily correlated, and the finite-field channel is linear and is subject to additive noise of arbitrary distribution. The problem is to determine the minimum achievable source-channel rate, defined as channel uses per source symbol needed for reliable communication. We combine Slepian-Wolf source coding and functional-decode-forward channel coding to obtain the solution for two classes of source and channel combinations. Furthermore, for correlated sources that have their common information equal their mutual information, we propose a new coding scheme to achieve the minimum source-channel rate.Comment: Author's final version (accepted and to appear in IEEE Transactions on Communications

Analysis and Evaluation of Fall Incidence and Registered Nurse Documentation of a Teach-Back Intervention at an Acute Care Hospital

PURPOSE: The purpose of this descriptive study was to examine the impact of a fall prevention quality improvement initiative on one unit of an acute care hospital (Hospital A). This multimedia initiative consisted of a video led fall prevention presentation with nurse-led scripted teach-back education on all newly admitted patients of one medical surgical oncology unit of Hospital A. Two objectives guided this study and included: Analyze adherence of a fall prevention education video and registered nurse led scripted teach-back intervention on newly admitted patients in the electronic health record; and Evaluate the impact of video education and registered nurse led scripted teach-back on the incidence of inpatient falls per 1000 bed days. METHODS: This study was conducted using a non-experimental, cross-sectional, descriptive design. SAMPLE: There were 76 patients that were admitted during the study. A total of 56 patients (73.7%) met criteria for study inclusion with a total of 20 patients (26.3%) excluded from the study. Patients aged 19 through 90, who were cognitively intact (alert, oriented to self, place, and time), admitted over 24 hours and able to read, speak, and comprehend English were included. Exclusion criteria comprised patients who were not cognitively intact, or patients who were discharged, deceased, declined to participate or transferred to another unit within 24 hours of admission. RESULTS: Out of 56 patients eligible for intervention, 26 patients (46.4%) received the video viewing and teach back intervention within the 24-hour time frame. Another 7 patients (12.5%) received the intervention in 48 hours, bringing the total to 33 patients (58.9%). There was no statistical difference (p = .087) found between the age of the patient (M= 65.7) and the video viewing and teach back intervention within 24 hours. There was no statistical difference (p = .223) found between the age of the patient (M = 65.9) and whether the video viewing and teach back intervention was completed after 48 hours. No statistical difference was found (p =. 373) in the fall risk score (M = 8.9) and the intervention being completed within 48 hours nor no statistical difference (p = .964) found in the fall risk score (M = 8.5) and the intervention completion in 24 hours. CONCLUSION: Evaluation of this fall prevention quality initiative resulted in expected but positive results in the limited two-week survey even though no statistical differences were found between cofounding variables. This initiative may provide needed interventions to facilitate the organization’s fall risk assessment tool and decrease fall rates throughout the hospital setting