8,083 research outputs found
OSU Multimodal Machine Translation System Report
This paper describes Oregon State University's submissions to the shared
WMT'17 task "multimodal translation task I". In this task, all the sentence
pairs are image captions in different languages. The key difference between
this task and conventional machine translation is that we have corresponding
images as additional information for each sentence pair. In this paper, we
introduce a simple but effective system which takes an image shared between
different languages, feeding it into the both encoding and decoding side. We
report our system's performance for English-French and English-German with
Flickr30K (in-domain) and MSCOCO (out-of-domain) datasets. Our system achieves
the best performance in TER for English-German for MSCOCO dataset.Comment: 5, WMT 201
Search for a heavy dark photon at future colliders
A coupling of a dark photon from a with the standard model
(SM) particles can be generated through kinetic mixing represented by a
parameter . A non-zero also induces a mixing between
and if dark photon mass is not zero. This mixing can be large when
is close to even if the parameter is small. Many
efforts have been made to constrain the parameter for a low dark
photon mass compared with the boson mass . We study the
search for dark photon in for a
dark photon mass as large as kinematically allowed at future
colliders. For large , care should be taken to properly treat possible
large mixing between and . We obtain sensitivities to the parameter
for a wide range of dark photon mass at planed colliders,
such as Circular Electron Positron Collider (CEPC), International Linear
Collider (ILC) and Future Circular Collider (FCC-ee). For the dark photon mass
, the
exclusion limits on the mixing parameter are . The CEPC with and FCC-ee with
are more sensitive than the constraint from current
LHCb measurement once the dark photon mass . For , the sensitivity at
the FCC-ee with and is better
than that at the 13~TeV LHC with , while the sensitivity at
the CEPC with and can be even
better than that at 13~TeV LHC with for
.Comment: 21 pages, 5 figures, 2 table
The Effect of Honeycomb Cavity: Acoustic Performance of a Double-leaf Micro Perforated Panel
A micro perforated panel (MPP) is a device consisting of a thin plate and submillimeter perforations for reducing low frequency noise. MPPs have many advantages compared to traditional sound absorption materials, such as durability and designability, and they can be used in a variety of places such as room interior designs, passenger and crew compartments of aircrafts and combustion engines. The models in this study were designed and fabricated with the latest 3-D printing technology. The transmission loss and sound absorption coefficient of the 3-D printed double-leaf MPPs with honeycomb cavities were studied. According to the established theory, MPPs work well with the help of a backing and a cavity. Earlier experimental and theoretical developments have suggested that the acoustic performance of the MPPs can be improved by partitioning the backing cavity. A Brüel & Kjær type 4206 impedance tube was used for the experiments and the one-load method was implemented for calculating the absorption and transmission coefficients of the MPPs. A honeycomb structure was chosen to be placed in the cavity because it can provide the required partitions between perforated panels so that the overall transmission loss was expected to be higher than those without the cavity partitioning. Measured results indicated that use of the honeycomb structure in the cavity have improved the acoustic performance of the MPPs. The sound absorption coefficient of a double-leaf MPP was similar to that of a single-leaf MPP if the cavity was long enough. Future studies should involve an investigation of the acoustic performance of the MPPs at oblique angles of incidence because the current study only provides the pertinent information at normal incidence since the standing wave tubes were used in the experiments
Seismic pounding between adjacent buildings of unequal floor height
When the story heights of adjacent buildings are unequal, the inter-floor pounding maybe happen during earthquake. Employing substructures in pounding area, the analytical model of adjacent structures with unequal story height is developed, and the equations of motion considering pounding are derived. Based on analytical model, the inter-floor pounding responses of adjacent buildings with unequal story height are investigated. The corresponding parametrical studies are conducted and influence rules are concluded. The results show that the influences of inter-floor pounding in adjacent buildings on main structures are smaller than those of floor pounding. But the damages on pounding area are quite large. Moreover, the period ratio of structures, the initial gap and the pounding location have remarkable influence on responses of inter-floor pounding
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