8,222 research outputs found
Resummation of Boson-Jet Correlation at Hadron Colliders
We perform a precise calculation of the transverse momentum ()
distribution of the boson+jet system in boson production events. The boson can
be either a photon, , or Higgs boson with mass , and is
the sum of the transverse momenta of the boson and the leading jet with
magnitude . Using renormalization group techniques and
soft-collinear effective theory, we resum logarithms and
at next-to-leading logarithmic accuracy including the non-global logarithms,
where and are respectively the hard scattering energy and the radius of
the jet. Specifically, we investigate two scenarios of or
in +jet events, and we examine the distributions
with different jet radii and study the effect of non-global logarithms. In the
end we compare our theoretical calculations with Monte Carlo simulations and
data from the LHC.Comment: 35 pages, 7 figure
Music and National Identity: A Study of Cello Works by Taiwanese Composers
The purpose of this study is to explore the impact of folkloric elements in music by Taiwanese composers and to uncover the methods they treat regional materials under the influences of Western compositional techniques, hereby creating a new fusion within classical music. This study centers in the ethnic impact on modern Taiwanese music, and also provides an opportunity to probe the significance of the subject nation in the field of musical creativity.
In this dissertation, the discussion includes the development of traditional and Western music in Taiwan including the historical and cultural background, how music serves as an emblem of national identity; the ties that have developed in the twentieth century between concert music and traditional Taiwanese music, and the progress in Western contemporary music.
Musical forms and textures of five cello-related works of Taiwanese composers are analyzed and compared. These Taiwanese composers are representative of the last three generations; all have had traditional Western-style training in composition in Japan, Europe, or America. The works discussed are Trio: Nostalgia, Three Melodies by Tsang-Houei Hsu, Cello Concerto by Tyzen Hsiao, Idea and Image by Shui-Long Ma, Monologue of Sin by Gordon Chin, and Trio by Kwang-I Ying.
By focusing on the relationship between national materials and new music compositions, and how composers understand and interpret these elements in their own works, such a study may stimulate more research in Taiwanese art music and bring it to a broader stage and serve to draw attention to further possible directions for Taiwanese educators, performers, and composers allowing them to introduce their works to an international audience
Phenotype-based and Self-learning Inter-individual Sleep Apnea Screening with a Level IV Monitoring System
Purpose: We propose a phenotype-based artificial intelligence system that can
self-learn and is accurate for screening purposes, and test it on a Level IV
monitoring system. Methods: Based on the physiological knowledge, we
hypothesize that the phenotype information will allow us to find subjects from
a well-annotated database that share similar sleep apnea patterns. Therefore,
for a new-arriving subject, we can establish a prediction model from the
existing database that is adaptive to the subject. We test the proposed
algorithm on a database consisting of 62 subjects with the signals recorded
from a Level IV wearable device measuring the thoracic and abdominal movements
and the SpO2. Results: With the leave-one cross validation, the accuracy of the
proposed algorithm to screen subjects with an apnea-hypopnea index greater or
equal to 15 is 93.6%, the positive likelihood ratio is 6.8, and the negative
likelihood ratio is 0.03. Conclusion: The results confirm the hypothesis and
show that the proposed algorithm has great potential to screen patients with
SAS
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