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First constraint on coherent elastic neutrino-nucleus scattering in argon
Akimov, D.,Albert, J. B.,An, P.,Awe, C.,Barbeau, P. S.,Becker, B.,Belov, V.,Blackston, M. A.,Bolozdynya, A.,Cabrera-Palmer, B.,Cervantes, M.,Collar, J. I.,Cooper, R. L.,Daughhetee, J.,del Valle Coello American Physical Society 2019 Physical review. D Vol.100 No.11
BAYESIAN VEHICLE CLASS RECOGNITION USING 3-D PROBE
한동진,D. B. COOPER,H.-S. HAHN 한국자동차공학회 2013 International journal of automotive technology Vol.14 No.5
A new approach is presented to vehicle-class recognition from video clips. Two new concepts introduced are:probes consisting of local 3-d curve-groups which when projected into video frames are features for recognizing vehicleclasses in video clips; and Bayesian recognition based on class probability densities for groups of 3-d distances between pairsof 3-d probes. A full Bayesian recognizer is realized via Monte Carlo simulation method. Also, a sub-optimal but robustcamera calibration method is employed and tested extensively.
Observation of coherent elastic neutrino-nucleus scattering
Akimov, D.,Albert, J. B.,An, P.,Awe, C.,Barbeau, P. S.,Becker, B.,Belov, V.,Brown, A.,Bolozdynya, A.,Cabrera-Palmer, B.,Cervantes, M.,Collar, J. I.,Cooper, R. J.,Cooper, R. L.,Cuesta, C.,Dean, D. J.,D American Association for the Advancement of Scienc 2017 Science Vol.357 No.6356
<P>The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross section is by far the largest of all low-energy neutrino couplings. This mode of interaction offers new opportunities to study neutrino properties and leads to a miniaturization of detector size, with potential technological applications. We observed this process at a 6.7s confidence level, using a low-background, 14.6-kilogram CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source at Oak Ridge National Laboratory. Characteristic signatures in energy and time, predicted by the standard model for this process, were observed in high signal-to-background conditions. Improved constraints on nonstandard neutrino interactions with quarks are derived from this initial data set.</P>
Robust three-dimensional vehicle reconstruction using cross-ratio invariance
Han, D.,Hwang, J.,Cooper, D. B.,Hahn, H. IET 2012 IET computer vision Vol.6 No.3
<P>A new method for structure-from-motion (SfM) is developed for moving vehicles on the street using a video camera Outdoor vehicle is one of the most difficult objects for tracking or three-dimensional (3D) reconstruction because most vehicle surfaces are specular and reflect background scenes. Therefore conventional point feature tracking method is not appropriate since spurious features are often tracked and the numbers of the correct features are too small. To overcome such difficulties, epipolar constraint, cross-ratio histogram and 3D curve reconstruction are employed in this method. The proposed method is also computationally efficient since it does not require expensive feature tracking process, which is used in most conventional SfM methods. Finally, to evaluate the error, experiments over 200 vehicles are performed under various viewing conditions and they show significant correlation among the number of frames, distance from the camera and accuracy of reconstruction.</P>
Stability of the Broad-line Region Geometry and Dynamics in Arp 151 Over Seven Years
Pancoast, A.,Barth, A. J.,Horne, K.,Treu, T.,Brewer, B. J.,Bennert, V. N.,Canalizo, G.,Gates, E. L.,Li, W.,Malkan, M. A.,Sand, D.,Schmidt, T.,Valenti, S.,Woo, J.-H.,Clubb, K. I.,Cooper, M. C.,Crawford American Astronomical Society 2018 The Astrophysical journal Vol.856 No.2
<P>The Seyfert 1 galaxy Arp 151 was monitored as part of three reverberation mapping campaigns spanning 2008-2015. We present modeling of these velocity-resolved reverberation mapping data sets using a geometric and dynamical model for the broad-line region (BLR). By modeling each of the three data sets independently, we infer the evolution of the BLR structure in Arp 151 over a total of 7 yr and constrain the systematic uncertainties in nonvarying parameters such as the black hole mass. We find that the BLR geometry of a thick disk viewed close to face-on is stable over this time, although the size of the BLR grows by a factor of similar to 2. The dynamics of the BLR are dominated by inflow, and the inferred black hole mass is consistent for the three data sets, despite the increase in BLR size. Combining the inference for the three data sets yields a black hole mass and statistical uncertainty of log(10)(M-BH/M-circle dot) = 6.82(-0.09)(+0.09) with a standard deviation in individual measurements of 0.13 dex.</P>
Silva, M.,Daheron, L.,Hurley, H.,Bure, K.,Barker, R.,Carr, Andrew J.,Williams, D.,Kim, H.W.,French, A.,Coffey, Pete J.,Cooper-White, Justin J.,Reeve, B.,Rao, M.,Snyder, Evan Y.,Ng, Kelvin S.,Mead, Ben Cell Press 2015 Cell stem cell Vol.16 No.1
Induced pluripotent stem cells (iPSCs) have the potential to transform drug discovery and healthcare in the 21<SUP>st</SUP> century. However, successful commercialization will require standardized manufacturing platforms. Here we highlight the need to define standardized practices for iPSC generation and processing and discuss current challenges to the robust manufacture of iPSC products.