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Boosting China’s Economic Transformation by the Cultural and Creative Industry
LIU Xiaopeng 한국유통과학회 2013 한국유통과학회 학술대회 논문집 Vol.2013 No.-
With respect to problems in China's present economic development process, in order to transfer the economic structure, a suggestion of promoting the cultural and creative industry is proposed. First, a brief introduction of China’s current difficulties is presented. And there follows an explanation of the definition and traits of cultural and creative industry. Thus, the need for China to develop the cultural and creative industry is analyzed. Finally, how to boost the development of the industry is suggested.
Xiaopeng Liu,Guangli Guo,Huaizhan Li 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.11
Coal mining can lead to various forms of surface deformation, the damage caused by curvature deformation is the most extensive, which has become the key to restricting the development and utilization of coal resources under villages. Therefore, it is very important to master the deformation and destruction mechanism of buildings under surface curvature deformation for the rational exploitation of coal resources under villages. In this paper, the deformation and damage of buildings caused by curvature deformation are studied with theoretical analysis and numerical simulation, aiming at the shallow foundation building in rural China, and the following objectives are achieved: 1) Based on the theory of elastic foundation beam, the longitudinal and transverse walls are considered as a whole and analyzed, and a mathematical model of the cooperative deformation in building walls under surface curvature deformation is established. 2) The failure mechanism of masonry buildings is analyzed, including the distribution of internal stress and the form of wall cracks. 3) The influence of various factors on the internal stress changes of buildings is discussed. 4) The results of numerical simulation of wall stress distribution are similar to theoretical analysis, and the influence of doors and windows on the additional stress distribution is analyzed emphatically. This study can provide important guidance for the optimization of coal mining design under villages and the protection of village buildings.
Designing Rich-Secure Network Covert Timing Channels Based on Nested Lattices
( Weiwei Liu ),( Guangjie Liu ),( Xiaopeng Ji ),( Jiangtao Zhai ),( Yuewei Dai ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.4
As the youngest branch of information hiding, network covert timing channels conceal the existence of secret messages by manipulating the timing information of the overt traffic. The popular model-based framework for constructing covert timing channels always utilizes cumulative distribution function (CDF) of the inter-packet delays (IPDs) to modulate secret messages, whereas discards high-order statistics of the IPDs completely. The consequence is the vulnerability to high-order statistical tests, e.g., entropy test. In this study, a rich security model of covert timing channels is established based on IPD chains, which can be used to measure the distortion of multi-order timing statistics of a covert timing channel. To achieve rich security, we propose two types of covert timing channels based on nested lattices. The CDF of the IPDs is used to construct dot-lattice and interval-lattice for quantization, which can ensure the cell density of the lattice consistent with the joint distribution of the IPDs. Furthermore, compensative quantization and guard band strategy are employed to eliminate the regularity and enhance the robustness, respectively. Experimental results on real traffic show that the proposed schemes are rich-secure, and robust to channel interference, whereas some state-of-the-art covert timing channels cannot evade detection under the rich security model.
Global attractor for coupled two-compartment Gray-Scott equations
Xiaopeng Zhao,Bo Liu 대한수학회 2013 대한수학회보 Vol.50 No.1
This paper is concerned with the long time behavior for the solution semiflow of the coupled two-compartment Gray-Scott equations with the homogeneous Neumann boundary condition on a bounded do- main of space dimension n ≤ 3. Based on the regularity estimates for the semigroups and the classical existence theorem of global attractors, we prove that the equations possesses a global attractor in Hk(Ω)4 (k≥0) space.
Two-stage layout-size optimization method for prow stiffeners
Liu, Zhijun,Cho, Shingo,Takezawa, Akihiro,Zhang, Xiaopeng,Kitamura, Mitsuru The Society of Naval Architects of Korea 2019 International Journal of Naval Architecture and Oc Vol.11 No.1
Designing sophisticate ship structures that satisfy several design criteria simultaneously with minimum weight and cost is an important engineering issue. For a ship structure composed of a shell and stiffeners, this issue is more serious because their mutual effect has to be addressed. In this study, a two-stage optimization method is proposed for the conceptual design of stiffeners in a ship's prow. In the first stage, a topology optimization method is used to determine a potential stiffener distribution based on the optimal results, whereupon stiffeners are constructed according to stiffener generative theory and the material distribution. In the second stage, size optimization is conducted to optimize the plate and stiffener sections simultaneously based on a parametric model. A final analysis model of the ship-prow structure is presented to assess the validity of this method. The analysis results show that the two-stage optimization method is effective for stiffener conceptual design, which provides a reference for designing actual stiffeners for ship hulls.
The existence of global attractor for convective Cahn-Hilliard equation
Xiaopeng Zhao,Bo Liu 대한수학회 2012 대한수학회지 Vol.49 No.2
In this paper, we consider the convective Cahn-Hilliard equa-tion. Based on the regularity estimates for the semigroups, iteration tech-nique and the classical existence theorem of global attractors, we prove that the convective Cahn-Hilliard equation possesses a global attractor in Hk (k≥ 0) space, which attracts any bounded subset of Hk(Ω) in the Hk-norm.
GLOBAL ATTRACTOR FOR COUPLED TWO-COMPARTMENT GRAY-SCOTT EQUATIONS
Zhao, Xiaopeng,Liu, Bo Korean Mathematical Society 2013 대한수학회보 Vol.50 No.1
This paper is concerned with the long time behavior for the solution semiflow of the coupled two-compartment Gray-Scott equations with the homogeneous Neumann boundary condition on a bounded domain of space dimension $n{\leq}3$. Based on the regularity estimates for the semigroups and the classical existence theorem of global attractors, we prove that the equations possesses a global attractor in $H^k({\Omega})^4$ ($k{\geq}0$) space.
Multi-Way Windowed Streams θ -Joins Using Cluster
Xinchun Liu,Jing Li,Xiaopeng Fan,Jun Chen 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.2
Recent years have witnessed an increasing interesting in data stream processing, such as network monitoring, the e-business, advertising system and etc. Join is applied to explore the correlation among the tuples from multiple streams. In this paper, we present a general method named Distributed Streams Join (DSJ) to process multi-way windowed streams θ-joins using a shared-nothing cluster. DSJ contains a distribution method named Time-Slice Distribution Method (TDM) and a join method named Transfer Join Method (TJM). Different from previous work, DSJ can (1) process multi-way θ-joins under arbitrary predicates; (2) preserve the integrity of results and load balance while distributing tuples to different nodes for parallel joining; (3) carry out the join operation in a local optimum order according to the histograms maintained in a real-time way. We have built DSJ on our own stream processing cluster to deal with multi-way streams joins and the experiments demonstrate that our DSJ can not only guarantee the load balance among all the computing nodes but also improve the throughput effectively.