S2-08 SESSION 2

S2-bundles over 2-orbifolds

Let M be a closed 4-manifold with π = π1(M) 6= 1 and π2(M) ∼= Z, and let u : π → Aut(π2(M)) be the natural action. If π ∼= Ker(u) × Z/2Z then M is homotopy equivalent to the total space of an RP -bundle over an aspherical surface. We show here that if π is not such a product then M is homotopy equivalent to the total space of an S-orbifold bundle over a 2orbifold B. There are at most two such o...

1999 ACC Session TM 08 - 2 Validation and Fusion of Longitudinal Positioning Sensors in AVCS

* Prepared in cooperation with the State of California, Business, Transportation and Housing Agency, Department of Transportation and the U.S. Department of Transportation Federal Highway Administration. ** The contents of this paper reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the offic...

Session 2

Abstracts—session 2

S — SESSION 2 Sunday 10 October 2004, 15.00–16.30 Prevalence and significance of neck node metastases from oesophageal and stomach cancer at presentation J F Griffith, A T Ahuja, A C W Chan, E Ng, S F Leung#, C N Ng, D K Leung, L T C Chow@ and S C S Chung Departments of Diagnostic Radiology and Organ Imaging, Surgery, #Clinical Oncology and @Anatomical and Cellular Pathology, Prince of Wales, C...

Session 2: Language Modeling

This session presented four interesting papers on statistical language modeling aimed for improved large-vocabulary speech recognition. The basic problem in language modeling is to derive accurate underlying representations from a large amount of training data, which shares the same fundamental problem as acoustic modeling. As demonstrated in this session, many techniques used for acoustic mode...