5,896 research outputs found
Production of the top-pions at the THERA collider based collisions
In the framework of the topcolor-assisted technicolor (TC2) models, we study
the production of the top-pions , via the
processes and
mediated by the anomalous top coupling . We find that the production
cross section of the process is very small. With
reasonable values of the parameters in TC2 models, the production cross section
of the process can reach . The charged
top-pions might be directly observed via this process at the
THERA collider based collisions.Comment: 10 pages, 3 figure
Detecting top-Higgs at high energy colliders
We calculate the contributions of the top-Higgs predicted by
topcolor assisted technicolor(TC2) models to and compare the results with the
contributions of to the processes and . We find that is very sensitive to
, which can be easy detected via this process at high-energy
collider(LC) experiments with , as long as
its mass below the threshold. The process also can be used to detect at
LC experiments.Comment: latex file, 10 pages, 4 eps figure, submitted to Phys. Lett.
Modeling the Resource Requirements of Convolutional Neural Networks on Mobile Devices
Convolutional Neural Networks (CNNs) have revolutionized the research in
computer vision, due to their ability to capture complex patterns, resulting in
high inference accuracies. However, the increasingly complex nature of these
neural networks means that they are particularly suited for server computers
with powerful GPUs. We envision that deep learning applications will be
eventually and widely deployed on mobile devices, e.g., smartphones,
self-driving cars, and drones. Therefore, in this paper, we aim to understand
the resource requirements (time, memory) of CNNs on mobile devices. First, by
deploying several popular CNNs on mobile CPUs and GPUs, we measure and analyze
the performance and resource usage for every layer of the CNNs. Our findings
point out the potential ways of optimizing the performance on mobile devices.
Second, we model the resource requirements of the different CNN computations.
Finally, based on the measurement, pro ling, and modeling, we build and
evaluate our modeling tool, Augur, which takes a CNN configuration (descriptor)
as the input and estimates the compute time and resource usage of the CNN, to
give insights about whether and how e ciently a CNN can be run on a given
mobile platform. In doing so Augur tackles several challenges: (i) how to
overcome pro ling and measurement overhead; (ii) how to capture the variance in
different mobile platforms with different processors, memory, and cache sizes;
and (iii) how to account for the variance in the number, type and size of
layers of the different CNN configurations
Neutral top-pion and top-charm production in high energy collisions
We calculate the contributions of the neutral top-pion, predicted by
topcolor-assisted technicolor (TC2) theory, to top-charm production via the
processes and at the high energy linear
collider (LC) experiments. The cross section is of order in most of
the parameter space of TC2 theory, which may be detected at the LC experiments.
So the process can be used to detect the
signature of TC2 theory.Comment: Latex file, 8 pages with 4 eps figures. to be published Phys.Lett.
Towards on Demand Road Condition Monitoring Using Mobile Phone Sensing as a Service
© 2016 The Authors. With the increased need for mobility and the overcrowding of cities, the area of Intelligent Transportation aims at improving the efficiency, safety, and productivity of transportation systems by relying on communication and sensing technologies. One of the main challenges faced in Intelligent Transportation Systems (ITS) pertains to the real time collection of traffic and road related data, in a cost effective, efficient, and scalable manner. The current approaches still suffer from problems related to the energy consumption of mobile devices and overhead in terms of communications and processing. We have previously proposed the concept of Mobile Sensing as a Service (MSaaS), in which mobile owners can offer the sensing capabilities of their phones as services to other users. This ability to offer sensory data to consumers on demand can bring significant benefits to ITS and can constitute an efficient and flexible solution to the problem of real-time traffic/road data collection. In this paper, we adapt the concept of MSaaS to the area of transportation, and present an on-demand vehicular sensing framework. This framework enables a data consumer to send a sensing trigger request to a vehicular sensing platform, which matches it with the most suitable set of data collectors that would perform the sensing task, and return the data to the platform for validation and processing. The collected data is then used to infer intelligence about the city and send the required traffic information to the data consumer, in a timely manner. The proposed model and architecture were validated using a combination of prototyping and traffic simulation traces, and the obtained results are very promising
The flavor-changing rare top decays in topcolor-assisted technicolor theory
In the framework of topcolor-assisted technicolor (TC2) theory, we calculate
the contributions of the scalars(the neutral top-pion and the
top-Higgs ) to the flavor-changing rare top decays (V=
W, g, or Z). Our results show that can enhance the
standard model by several orders of
magnitude for most of the parameter space. The peak of the branching ratio
resonance emerges when the top-Higgs mass is between and . The
branching ratio can reach in the narrow range.Comment: Latex file, 11pages, 2 eps figure
Probing neutral top-pion via a flavor-changing process
In the framework of topcolor-assisted-technicolor model(TC2), we study a
flavor-changing neutral top-pion production process . The study shows that there exists a resonance effect
which can enhance the cross section up to a few fb even tens fb. For a yearly
luminosity 100 at future linear colliders, there might be hundreds
even thousands events to be produced. On the other hand, the background of such
flavor-changing process is very clean due to the GIM mechanism in SM . With
such sufficient events and clean background, neutral toppion could be detected
at future linear colliders with high center of energy and luminosity. Our study
provides a possible way to test TC2 model.Comment: 10 pages, 4 figures,has been accepted by Phys.Rev.
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Semi-Automatic Query Expansion Approach to Web- Based Information Retrieval
The query used for Web searching is usually short and may not be able to reflect the intrinsic semantics of the user information need. The purpose of the paper is to take into account user information feedback, and to develop a semi-automatic query expansion approach to improve the effectiveness of Web searching. A search engine has been developed using the vector information retrieval model to validate the semi-automatic query expansion approach. The experiments show that this approach may improve the effectiveness of web searching
Muon anomalous magnetic moment confronts exotic fermions and gauge bosons
We investigate the status of models containing exotic fermions or extra
Z-like neutral gauge bosons in the light of the recent data on anomalous
magnetic moment of muon. We find that it is possible to extract interesting
bounds on the parameters characterizing such models. The bounds are
particularly strong if the new flavour-changing neutral currents are axial
vectorlike.Comment: Additional figures included, minor modifications made in the tex
The rare top quark decays in the topcolor-assisted technicolor model
We consider the rare top quark decays in the framework of topcolor-assisted
technicolor (TC2) model. We find that the contributions of top-pions and
top-Higgs predicted by the TC2 model can enhance the SM branching ratios by as
much as 6-9 orders of magnitude. i.e., in the most case, the orders of
magnitude of branching ratios are , , . With the reasonable values of the
parameters in TC2 model, such rare top quark decays may be testable in the
future experiments. So, rare top quark decays provide us a unique way to test
TC2 model.Comment: 14 pages, 4 figure
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