AT&T Teleholdings, Inc.

About: AT&T Teleholdings, Inc. is a based out in . It is known for research contribution in the topics: Automatic number identification & Telephone line. The organization has 258 authors who have published 209 publications receiving 8098 citations.

Method of routing interLATA network traffic

Abstract: Methods of routing interLATA network traffic are disclosed. An example method of facilitating a local area communication feature includes providing a control device to store routing information and associating a first communication device in a first area associated with a first hub device with the control device, the first communication device including first routing information. The example method also includes associating a second communication device in a second area associated with a second hub device with the control device, the second communication device including second routing information, receiving a calling code from at least one of the first or second areas at the control device, and routing a call via the control device and the local area communication feature.

Depth-averaged simulation of supercritical flow in channel with wavy sidewall

Abstract: Supercritical flow in a channel with a wavy sidewall is numerically simulated by solving the two-dimensional (2D) depth-averaged equations using two different second-order accurate finite-difference schemes: ADI and MAC. ADI is an implicit model that uses an alternating-direction-implicit (ADI) scheme to solve the governing equations. MAC is an explicit model employing the MacCormack two-step predictor-corrector scheme. To accurately simulate the wavy sidewall, both models solve the governing equations in transformed computational coordinates. Bottom friction is computed using the Manning formula and the effective stresses are modeled with a constant eddy-viscosity turbulence model. As is customary, the stresses due to depth-averaging are neglected. The computed water depth in the channel is compared with experimental data obtained by Mizumura. The effect of bottom friction, effective stresses, artificial viscosity, grid geometry, boundary conditions, and the Courant-Friedrichs-Lewy (CFL) number are investigated. Similarities and differences in the behavior of the models are observed and discussed.

Galectin-3 and β-catenin are associated with a poor prognosis in serous epithelial ovarian cancer

Abstract: Purpose This study was designed to explore the expression levels of Galectin-3 (Gal-3) and β-catenin in serous epithelial ovarian cancer (SEOC), the linkage between their expressions, and the clinicopathological features of SEOC patients. Patients and methods Seventy-four SEOC patients' specimens were detected for Gal-3 and β-Catenin expressions using immunohistochemistry, and the association between β-catenin or Gal-3 protein expressions and clinicopathological features, treatment effects, and prognosis were analyzed using SPSS 19.0. Western blot was used to analyze protein expressions of Wnt/β-catenin pathway in ovarian cancer cell lines. Results There was a statistically significant positive correlation between Gal-3 and β-catenin expressions in SEOC (r=0.304 and P=0.001). Gal-3 expression was related to the grade (P=0.037), clinical stage (P=0.034), platinum resistance (P=0.030), and recurrence (P=0.001) in SEOC. There was a significant correlation between β-catenin with recurrence in SEOC (P=0.035). Platinum resistance (P=0.003) and Gal-3 expression (P<0.001) were independent risk factors for poorer overall survival (OS). OS of the strongly positive Gal-3 group was significantly lower than that of the negative and weakly positive groups (log-rank test, P=0.001). OS of the positive β-catenin group was lower than that of the negative β-catenin group (log-rank test, P=0.034). Downregulating Gal-3 expression attenuated the protein expressions of Wnt/β-catenin pathway in ovarian cancer cell lines. Conclusion Gal-3 might activate Wnt/β-catenin signaling pathway in SEOC. Hence, Gal-3 may serve as a prognostic factor for SEOC. Targeting Gal-3 may be a promising new treatment approach for SEOC.

An evaluation of the diagnostic rhyme test

Abstract: The intelligibility of a speech output device is an important predictor of user acceptability. The Diagnostic Rhyme Test (DRT) is an ANSI standard for measuring speech intelligibility (ANSI S3.2-1989). In the DRT, respondents hear a word and choose its equivalent from two visually presented words. The two words differ only in their initial (e.g., veal-feel), and the two consonants differ only in a single distinctive acousticphonetic feature (e.g., voicing). To define “distinctive feature”, the DRT uses a minimal distinctive feature system, loosely based on the work of Jakobson et al. (1963) and Miller and Nicely (1955). These studies carefully analyzed natural speech errors in various noise environments. Whether or not these studies can be freely applied to alternative forced-choice tests of coded or synthesized speech is an empirical issue. In the present study, the results of a Consonant Identification (CI) task were compared to a previously conducted DRT using the same coding algorithms. The CI data indicated that the low-bit-rate coded speech yielded significantly more multifeature confusions then the uncoded speech. Moreover, the multifeature confusions could not be easily predicted from the single-feature confusions. A fundamental assumption of the DRT is that speech errors are adequately diagnosed by testing single-feature confusions. The results of the present study contradict that assumption. In conclusion, we argue that the application of the DRT (and more generally, any closed-response choice procedure) to coded or synthesized speech is questionable.

Network arrangement for smart card applications

Abstract: A network for smart card applications using a smart card in combination with a smart card terminal. The network arrangement includes a communications network connected to at least one smart card terminal, and a central database server in operative communication with the network central office. The network central office is part of the public switched telephone network and transmits smart card data between the smart card terminal and central database server. The central database server includes many partitioned memory locations each containing information associated with a smart card application. The information contained in the partitioned memory locations is accessible by data pointers stored on the individual smart cards. In this manner, the amount of data stored on the smart cards using the system is reduced and all of the information relating to a smart card user is centralized in one location. The central database server includes means for distinguishing between public information and proprietary information stored in the partitioned memory locations.