2,746 research outputs found
Results of time evolution analyses of B-decays at Belle
We report results of proper-time evolution analyses of B decays at Belle,
based on a 29.1/fb data sample recorded at the Upsilon (4S) resonance. These
results include measurements of sin2phi_1, the lifetime of B-mesons, and the
mass-difference between two mass eigenstates of the B^0-B^0-bar system
(Delta-m_d). Delta-m_d is measured using three different methods: fully
reconstructed hadronic modes, a fully reconstructed semi-leptonic mode, and a
partially reconstructed D*+ pi- mode.Comment: 13 pages, contributed to the proceedings of the Fifth KEK Topical
Conference, 20-22, Nov. 2001, Tsukuba, Japa
Surgery groups of the fundamental groups of hyperplane arrangement complements
Using a recent result of Bartels and Lueck (arXiv:0901.0442) we deduce that
the Farrell-Jones Fibered Isomorphism conjecture in L-theory is true for any
group which contains a finite index strongly poly-free normal subgroup, in
particular, for the Artin full braid groups. As a consequence we explicitly
compute the surgery groups of the Artin pure braid groups. This is obtained as
a corollary to a computation of the surgery groups of a more general class of
groups, namely for the fundamental group of the complement of any fiber-type
hyperplane arrangement in the complex n-space.Comment: 11 pages, AMSLATEX file, revised following referee's comments and
suggestions, to appear in Archiv der Mathemati
Updated Corpora and Benchmarks for Long-Form Speech Recognition
The vast majority of ASR research uses corpora in which both the training and
test data have been pre-segmented into utterances. In most real-word ASR
use-cases, however, test audio is not segmented, leading to a mismatch between
inference-time conditions and models trained on segmented utterances. In this
paper, we re-release three standard ASR corpora - TED-LIUM 3, Gigapeech, and
VoxPopuli-en - with updated transcription and alignments to enable their use
for long-form ASR research. We use these reconstituted corpora to study the
train-test mismatch problem for transducers and attention-based
encoder-decoders (AEDs), confirming that AEDs are more susceptible to this
issue. Finally, we benchmark a simple long-form training for these models,
showing its efficacy for model robustness under this domain shift.Comment: Submitted to ICASSP 202
Viral Load Monitoring of Antiretroviral Therapy, cohort viral load and HIV transmission in Southern Africa: A Mathematical Modelling Analysis
In low-income settings, treatment failure is often identified using CD4 cell count monitoring. Consequently, patients remain on a failing regimen, resulting in a higher risk of transmission. We investigated the benefit of routine viral load monitoring for reducing HIV transmission
Putting Quality Functional Assessment into Practice in Schools: A Research Agenda on Behalf of E/BD Students
The discipline provisions of the IDEA place emphasis on gaining an understanding of why the student is motivated to engage in problem behavior and to consider, when appropriate, positive behavioral interventions, strategies, and supports to address the behavior. These legislative mandates bring center stage a range of new duties and responsibilities for the IEP team. This article discusses the problems that school divisions across the country are encountering when implementing these requirements and recommends a course of research to address these issues
On manifolds with nonhomogeneous factors
We present simple examples of finite-dimensional connected homogeneous spaces
(they are actually topological manifolds) with nonhomogeneous and nonrigid
factors. In particular, we give an elementary solution of an old problem in
general topology concerning homogeneous spaces
The Grizzly, April 26, 2001
Watson Foundation Considers Ursinus for Membership • Dining Committee Addresses Rising Number of Student Complaints • Senior Student Young Named Ursinus Valedictorian • CAB, RHA, USGA, and Class Officer Elections Being Held • Opinions: Berg on Bush: First 100 Days of W a Comedy of Errors; Wismer: Taking a Turn for the Worse?; Awards Assembly Hot, Boring, Uninspired • Annual Student Art Exhibition now in Berman • Track: Men and Women Accelerate Toward Penn Relays • Baseball: Close to the .500 Mark, Third in Conference • Women\u27s LAX #1 Seed in Conference • Softball Squad Holding Steady in Third Place • Men\u27s and Women\u27s Tennis Look to end Season at CCC • Complications Lead to Delay in Field House Openinghttps://digitalcommons.ursinus.edu/grizzlynews/1489/thumbnail.jp
Recommended from our members
Session B8- Evaluating Diadromous Fish Passage at Lower Shannock Falls Dam Removal and Nature-like Weir Installation, Pawcatuck River, Rhode Island
The Lower Shannock Falls dam, a defunct, run-of-the river timber-crib dam situated on bedrock ledge, and located on the Pawcatuck River in southwestern Rhode Island, was removed in summer 2010. The target species for this fish passage restoration include river herring, American shad, American eel, and Atlantic salmon, as well as resident trout. Besides dam removal, additional construction work activities were completed for purposes of improving target species passage efficiency: three nature-like stone weirs were constructed for purposes of providing backwatering effects downstream of the dam removal; and bedrock ledge was modified to eliminate significant hydraulic drops. During construction, test flows were released through the weirs and restored river reach to evaluate hydraulics of the passage site. Based on test flows, several large boulders were installed as adaptive measures to improve upon site hydraulics. Post-construction velocity and depth measurements were completed in fall 2010 and spring 2011 to evaluate passage performance. This presentation will compare the results of the field monitoring with the as-built features and HEC-RAS and Fish Flow modeled hydraulic conditions for the site. Discussion will also include upstream passage conditions that resulted from impoundment drawdown and channel restoration. This project exemplifies Northeastern U.S. dam removals where underlying bedrock may have an effect on passage efficiency, and in-channel work activities may be beneficial to improving upon historic passage conditions. The project is being evaluated as a case study site for a web-based fish passage manual being developed jointly by NOAA-USGS-USFWS, scheduled for release in 2012
The possibility of absolute calibration of analog detectors by using parametric down-conversion: a systematical study
Accurate calibration of photodetectors both in analog and in photon-counting
regime is fundamental for various scientific applications, which range from
"traditional" quantum optics to the studies on foundations of quantum
mechanics, quantum cryptography, quantum computation, etc. In this paper we
systematically study the possibility of the absolute calibration of analog
photo-detectors based on the properties of parametric amplifiers. Our results
show that such a method can be effectively developed with interesting possible
metrological applications
Helicobacter cinaedi Induced Typhlocolitis in Rag-2-Deficient Mice
Background
Helicobacter cinaedi, an enterohepatic helicobacter species (EHS), is an important human pathogen and is associated with a wide range of diseases, especially in immunocompromised patients. It has been convincingly demonstrated that innate immune response to certain pathogenic enteric bacteria is sufficient to initiate colitis and colon carcinogenesis in recombinase-activating gene (Rag)-2-deficient mice model. To better understand the mechanisms of human IBD and its association with development of colon cancer, we investigated whether H. cinaedi could induce pathological changes noted with murine enterohepatic helicobacter infections in the Rag2[superscript −/−] mouse model.
Materials and Methods
Sixty 129SvEv Rag2[superscript −/−] mice mouse were experimentally or sham infected orally with H. cinaedi strain CCUG 18818. Gastrointestinal pathology and immune responses in infected and control mice were analyzed at 3, 6 and 9 months postinfection (MPI). H. cinaedi colonized the cecum, colon, and stomach in infected mice.
Results
H. cinaedi induced typhlocolitis in Rag2[superscript −/−] mice by 3 MPI and intestinal lesions became more severe by 9 MPI. H. cinaedi was also associated with the elevation of proinflammatory cytokines, interferon-γ, tumor-necrosis factor-α, IL-1β, IL-10; iNOS mRNA levels were also upregulated in the cecum of infected mice. However, changes in IL-4, IL-6, Cox-2, and c-myc mRNA expressions were not detected.
Conclusions
Our results indicated that the Rag2[superscript −/−] mouse model will be useful to continue investigating the pathogenicity of H. cinaedi, and to study the association of host immune responses in IBD caused by EHS.United States. National Institutes of Health (R01-0D011141)United States. National Institutes of Health (R01-CA067529)United States. National Institutes of Health (P30-ES002109)United States. National Institutes of Health (P01-CA026731
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