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Search Results: 1 - 10 of 3857 matches for " Dongdong Qu "
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The Evolutionary Road: The Common Goal of Human as a Species  [PDF]
Dongdong Du
Open Journal of Philosophy (OJPP) , 2018, DOI: 10.4236/ojpp.2018.85033
Abstract: This paper puts forward the idea of the right, evolution road of all mankind, and emphasizes that it should be regarded as the common purpose of human beings from the view of human evolution. Also from the point of philosophical, it is clarifying the concept of human path, emphasizing the individual and its existence, openness and humanity based on human nature (human emotion, love, care); the rational (thinking, reason) based on reason, experience, learning and research; and two goals: utilitarian and efficiency, the evolutionary of human beings. In the end, from the view of the question they focused on, attribution, solution and attitude towards human nature, it distinguishes the concept between “the evolutionary road of human beings” and “Noble Eightfold Path” to alert people that development, progress, evolutionary path of human is unparalleled and it is the right way for mankind. Purpose: The combination of reason and human nature, so as to enhancing human efficiency, meeting human needs, and ultimately promoting people into the correct, evolutionary path. Method: Descriptive thinking can be used.
A novel mutation in NF1 gene in a Chinese patient with Legius syndrome like café au lait spots  [PDF]
Dongdong Zheng, Xiaohong Duan
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.22038

Neurofibromatosis type I (NF1) (OMIM, 162200) and Legius syndrome (OMIM, 611431) both have multiple café au lait spots. It is a challenge to differentiate the two diseases. Here we report a Legius syndrome-like patient who finally was identified as NF1 with a novel mutation in NF1 exon1 (c.55G > T). The mutation caused a substitution of a glutamic acid (GAG) with a terminator codon (TAG). For those patients with only multiple café au lait macules, axillary and inguinal freckling, but without any other clinical signs in NF1 and Legius syndrome, a gene testing is necessary to give a final diagnose. We suggested to use “Neurofibromatosis type 1like syndrome” to describe those patients just like our patient reported here.

3D Braided Material Based on Space Group R3 Symmetry  [PDF]
Wensuo Ma, Dongdong Yin
Materials Sciences and Applications (MSA) , 2013, DOI: 10.4236/msa.2013.412098

A unit cell geometrical structure was found with the use of symmetry operations corresponding to the point group C3. Based on the symmetry of space group R3, a 3D braided geometrical structure was obtained by transforming the unit-cell. The features corresponding to this braided structure were studied. The fiber volume percentage and variational tendencies of the material were predicted by establishing a geometric model.

Analysis on Total Factor Productivity Changes and Efficiency in Construction Industry from the year 1997~2009
Dongdong Huang
Economic Management Journal , 2012,
Abstract: The paper evaluates the total factor productivity of China's construction industry from 1997 to 2009 based on DEA models, and analyzes the causes and process of TFP changes. The results show that technological progress is the main source of growth for TFP. The growth mode of construction industry is changing from an extensive one to an intensive one. By comparing efficiency indicators of the construction industry from different provinces, we found that the efficiency indicators of Shanghai, Beijing, and Zhejiang are in the leading level in our country, whose construction industries are with reasonable scale and advanced technology.
Architecture of Embedded System Software
Dongdong Wang
Computer and Information Science , 2009, DOI: 10.5539/cis.v1n4p155
Abstract: The verification of real-life C/C++ code is inherently hard. Not only are there numerous challenging language constructs, but the precise semantics is often elusive or at best vague. This is even more true for systems software where non-ANSI compliant constructs are used, hardware is addressed directly and assembly code is embedded. In this work we present a lightweight solution to detect software bugs in C/C++ code. Our approach performs static checking on C/C++ code by means of model checking. While it cannot guarantee full functional correctness, it can be a valuable tool to increase the reliability and trustworthiness of real-life system code. This paper explains the general concepts of our approach, discusses its implementation in our C/C++ checking tool Goanna, and presents some performance results on large software packages.
Status Quo, Problems and Counter Measures for the Sports Public Service System of Suzhou  [PDF]
Dongdong Bao, Duanyang Ren, Zhangzhi Ge
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.410064
Abstract: We analyze the status quo of Suzhou sports public service system by the method of literature, questionnaire, interview etc. Such countermeasures are proposed as the target of perfecting the supporting and guaranteeing system, involving improve the sports facilities, increase public investment, expand the supply of sports public services channels, construct the performance evaluation system for sports public service and so on, as the development of countermeasures.
Positive Darwinian selection in human population: A review
DongDong Wu,YaPing Zhang
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0202-z
Abstract: This paper reviews a large number of genes under positive Darwinian selection in modern human populations, such as brain development genes, immunity genes, reproductive related genes, perception receptors. The research on the evolutionary property of these genes will provide important insight into human evolution and disease mechanisms. With the increase of population genetics and comparative genomics data, more and more evidences indicate that positive Darwinian selection plays an indispensable role in the origin and evolution of human beings. This paper will also summarize the methods to detect positive selection, analyze the interference factors faced and make suggestions for further research on positive selection.
A linearly implicit conservative difference scheme for the generalized Rosenau-Kawahara-RLW equation
Dongdong He,Kejia Pan
Mathematics , 2015,
Abstract: This paper concerns the numerical study for the generalized Rosenau-Kawahara-RLW equation obtained by coupling the generalized Rosenau-RLW equation and the generalized Rosenau-Kawahara equation. We first derive the energy conservation law of the equation, and then develop a three-level linearly implicit difference scheme for solving the equation. We prove that the proposed scheme is energy-conserved, unconditionally stable and second-order accurate both in time and space variables. Finally, numerical experiments are carried out to confirm the energy conservation, the convergence rates of the scheme and effectiveness for long-time simulation.
An energy preserving finite difference scheme for the Poisson-Nernst-Planck system
Dongdong He,Kejia Pan
Mathematics , 2015,
Abstract: In this paper, we construct a semi-implicit finite difference method for the time dependent Poisson-Nernst-Planck system. Although the Poisson-Nernst-Planck system is a nonlinear system, the numerical method presented in this paper only needs to solve a linear system at each time step, which can be done very efficiently. The rigorous proof for the mass conservation and electric potential energy decay are shown. Moreover, mesh refinement analysis shows that the method is second order convergent in space and first order convergent in time. Finally we point out that our method can be easily extended to the case of multi-ions.
The Innovation and Perfection of Chinese Enterprise Form  [PDF]
Nannan Qu
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.38007
Abstract: China’s enterprise form adopts legal principle, lack of flexibility and innovation, which restricts the development of China’s economy. The latest revision of the company law has abolished the restriction of registered capital and loosened of market access, and has brought the opportunity and challenge to the innovation and perfection of enterprise form. This paper mainly discusses the value of the guarantee of Limited Liability Company based on the foreign experience to innovate and perfect our country’s enterprise form, and to better promote the development of the socialist market economy.
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