350 research outputs found
The telosome/shelterin complex and its functions
The telosome/shelterin protein complex bound to telomeres is essential for maintenance of telomere structure and telomere signaling functions
The Circular Velocity Curve of the Milky Way from 5 to 25 kpc using luminous red giant branch star
We present a sample of 254,882 luminous red giant branch (LRGB) stars
selected from the APOGEE and LAMOST surveys. By combining photometric and
astrometric information from the 2MASS and Gaia surveys, the precise distances
of the sample stars are determined by a supervised machine learning algorithm:
the gradient boosted decision trees. To test the accuracy of the derived
distances, member stars of globular clusters (GCs) and open clusters (OCs) are
used. The tests by cluster member stars show a precision of about 10 per cent
with negligible zero-point offsets, for the derived distances of our sample
stars. The final sample covers a large volume of the Galactic disk(s) and halo
of kpc and kpc. The rotation curve (RC) of the Milky
Way across radius of kpc have been accurately measured
with 54,000 stars of the thin disk population selected from the LRGB
sample. The derived RC shows a weak decline along with a gradient of
km s kpc,
in excellent agreement with the results measured by previous studies. The
circular velocity at the solar position, yielded by our RC, is
km s, again in great consistent
with other independent determinations. From the newly constructed RC, as well
as constraints from other data, we have constructed a mass model for our
Galaxy, yielding a mass of the dark matter halo of =
()10 with a corresponding radius of
= kpc and a local dark matter density of
GeV cm.Comment: 16 pages, 13 figures and 5 tables, accepted by Ap
Think Before You Speak: Cultivating Communication Skills of Large Language Models via Inner Monologue
The emergence of large language models (LLMs) further improves the
capabilities of open-domain dialogue systems and can generate fluent, coherent,
and diverse responses. However, LLMs still lack an important ability:
communication skills, which makes them more like information seeking tools than
anthropomorphic chatbots. To make LLMs more anthropomorphic and proactive
during the conversation, we add five communication skills to the response
generation process: topic transition, proactively asking questions, concept
guidance, empathy, and summarising often. The addition of communication skills
increases the interest of users in the conversation and attracts them to chat
for longer. To enable LLMs better understand and use communication skills, we
design and add the inner monologue to LLMs. The complete process is achieved
through prompt engineering and in-context learning. To evaluate communication
skills, we construct a benchmark named Cskills for evaluating various
communication skills, which can also more comprehensively evaluate the dialogue
generation ability of the model. Experimental results show that the proposed
CSIM strategy improves the backbone models and outperforms the baselines in
both automatic and human evaluations
Segmentation and Recent rupture history of the Xianshuihe Fault, Southwestern China
Tibetan Plateau in western Sichuan Province, China, is one of the
world's most active faults, having produced at least 8 earthquakes of M ≥ 7
since 1725 on a 350-km-long segment of the fault. In the more limited 150-km long
northern segment including Luhuo and Daofu, 5 earthquakes of M ≥ 6.9 have
occurred during the past 100 years alone, with well documented overlapping
surface ruptures. Some of these events were remarkably similar in magnitude
and location to earlier historic events, suggesting that the characteristic
earthquake model may apply here. No obvious geometric segmentation characterizes
the smoothly curving Luhuo-Daofu sector, although its ends are marked
by major left-stepping en echelon offsets that have also been the terminating
points of individual earthquake ruptures. Minor en echelon offsets and bends
within this segment are associated with local vertical relief, and one 9° bend
is located close to the epicenter of the 1973 Luhuo earthquake (M = 7.6).
In the southern sector of the Xianshuihe fault, south of Qianning, the
faults splits into several branches, one of which broke over its entire 27-km
length during the 1955 Kangding earthquake (M = 7.5). The main fault near
Kangding is characterized by a series of restraining and releasing bends,
associated with corresponding topography, and these bends may be related to
the fact that this southern segment of the fault seems to be characterized by
infrequent great earthquakes (e.g., M = 7-3/4 in 1786) rather than by more
frequent moderate earthquakes (M = ± 7) such as those that characterize the
straighter and more continuous Luhuo-Daofu sector to the north.
Continuing creep has been documented along some segments of the fault,
and this, together with its high degree of activity, superb high-altitude
exposures, and other unique attributes, make the Xianshuihe fault one of the
most promising sites in the world for earthquake-prediction, hazard-evaluation,
and segmentation studies
A modified VMAT adaptive radiotherapy for nasopharyngeal cancer patients based on CT-CT image fusion
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