21,885 research outputs found
China's Western Development Strategy: Policies, Effects and Prospects
China’s Western Development Strategy (WDS) has been carried out since 1999 with remarkable achievements, whereby Western China also experienced a rapid and stable development during the past decade. This paper analyzes policy actions and effects of WDS. The findings indicate that Western China’s economic development has experienced a dramatic reversion after implementation of WDS, which to a certain extent, proves that WDS has played a significant role in promoting western regions’ development. This paper also reveals some key constraints on Western China’s economic development and then offers a set of policy ideas for the next stage of Western development.Western Development Strategy; Regional Policy; Policy effects; Western China
Efficient rare event simulation for failure problems in random media
In this paper we study rare events associated to solutions of elliptic
partial differential equations with spatially varying random coefficients. The
random coefficients follow the lognormal distribution, which is determined by a
Gaussian process. This model is employed to study the failure problem of
elastic materials in random media in which the failure is characterized by that
the strain field exceeds a high threshold. We propose an efficient importance
sampling scheme to compute small failure probabilities in the high threshold
limit. The change of measure in our scheme is parametrized by two density
functions. The efficiency of the importance sampling scheme is validated by
numerical examples.Comment: 17 pages, 4 figures, 5 table
Urbanization Process and Land Use Policy
Within a framewaork of New Economic Geography (NEG) model, this paper intends to show that urbanization rate in an isolated region is determined as a synthetic rerult of rational behavior of each socio-economic agent. In particular, a model is constructed with bearing to explain the urbanization process in Chaina in mind such that the role of government in managing land use allocation is explicitly incorporated and its policy effects can be evaluated. Some results of theoretical analysis and numerical simulation analysis are contrasted with the ones in Fujita and Krugman (1995) incorporating land into an NEG model as well.
Hexapod Coloron at the LHC
Instead of the usual dijet decay, the coloron may mainly decay into its own
"Higgs bosons", which subsequently decay into many jets. This is a general
feature of the renormalizable coloron model, where the corresponding "Higgs
bosons" are a color-octet and a color-singlet . In this paper,
we perform a detailed collider study for the signature of with the
coloron as a six-jet resonance. For a light below around 0.5 TeV,
it may be boosted and behave as a four-prong fat jet. We also develop a
jet-substructure-based search strategy to cover this boosted case.
Independent of whether is boosted or not, the 13 TeV LHC with 100
fb has great discovery potential for a coloron with the mass sensitivity
up to 5 TeV.Comment: 18 pages, 10 figure
A 2D based Partition Strategy for Solving Ranking under Team Context (RTP)
In this paper, we propose a 2D based partition method for solving the problem
of Ranking under Team Context(RTC) on datasets without a priori. We first map
the data into 2D space using its minimum and maximum value among all
dimensions. Then we construct window queries with consideration of current team
context. Besides, during the query mapping procedure, we can pre-prune some
tuples which are not top ranked ones. This pre-classified step will defer
processing those tuples and can save cost while providing solutions for the
problem. Experiments show that our algorithm performs well especially on large
datasets with correctness
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