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Search Results: 1 - 10 of 110996 matches for " ZHANG Dan "
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Review on the Research of Dynamic Competition Theory  [PDF]
Jianbin Zhang, Dan Gao
Journal of Human Resource and Sustainability Studies (JHRSS) , 2014, DOI: 10.4236/jhrss.2014.24026
Abstract: In the 1980s, dynamic competition theory originated in the field of strategic management abroad. It focused on the behaviors of attacks and counterattacks interaction among the enterprises. But Chinese researchers paid attention to the dynamic research a long time later. On the basis of the existing research, this article summarized the theoretical background research object and the research methods, and analyzed the limitations and future research direction of dynamic competition.
Robust Regression Analysis with LR-Type Fuzzy Input Variables and Fuzzy Output Variable  [PDF]
Dan Zhang, Qiujun Lu
Journal of Data Analysis and Information Processing (JDAIP) , 2016, DOI: 10.4236/jdaip.2016.42006
Abstract: In this paper, we propose a fuzzy linear regression model with LR-type fuzzy input variables and fuzzy output variable, the fuzzy extent of which may be different. Then we give the iterative solution of the proposed model based on the Weighted Least Squares estimation procedure. Some properties of the estimates are proved. We also define suitable goodness of fit index and its adjusted version useful to evaluate the performances of the proposed model. Based on the Least Median Squares-Weighted Least Squares (LMS-WLS) estimation procedure, we give robust estimation steps for the proposed model. Compared with the well-known fuzzy Least Squares method, the effectiveness of our model on reducing the outliers influence is shown by using two examples.
The Long-Term Impact of Household Wealth on Income Mobility  [PDF]
Kai Zhang, Dan Liu
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.83024
Abstract: By using the China Health and Nutrition Survey data, this paper targets the generation who enter the labor market at the age of 18 to 35 and tries to study the long-term impact of their family health on income mobility as well as keep track of the tendency. Three conclusions can be drown from the research. Firstly, the impact is more significant in the second poor group and the middle-income group than that in the high-income group, and that of the low-income group is the worst. Secondly, in the long run, the impact shows a weakening trend, but the changing process is not the same. Thirdly, the significance of impact varies in different age groups. Compared with the groups aged 20 to 35 and 25 to 30, the impact is relatively remarkable for those who just enter the labor market aged 18 to 25.
Research on Evaluation Indicator System for Distribution Channel of Tourism Destination  [PDF]
Dan Yao, Mu Zhang
American Journal of Industrial and Business Management (AJIBM) , 2017, DOI: 10.4236/ajibm.2017.79074
Abstract: With competition of tourism destination becoming fiercer, improving distribution channel is an important way to improve competitiveness of tourism destination. The Paper, by using Delphi, AHP and Yaahp, constructs evaluation indicator system on distribution channel of tourism destination, and takes Shenzhen OCT tourist resort as case study to make comparative analysis on indicator importance and actual performance score of OCT tourist resort. The research finds that internal controllable factors of distribution channel play the most important role in its evaluation, of which economic performance and product factor are far from expectation of tourism enterprise managers, and the Paper will provide advice for improving distribution channel of tourism destination from three aspects, including economic performance of distribution channel, product factor and external uncontrollable factors.
Case Study on Business Risk Management for Software Outsourcing Service Provider with ISM  [PDF]
Jiangping Wan, Dan Wan, Hui Zhang
Technology and Investment (TI) , 2010, DOI: 10.4236/ti.2010.14033
Abstract: This paper identifies the risks of CN Group which is working at software outsourcing projects between HongKong and Guangdong, discovers the causal relationships among the risk factors, and constructs corresponding risk structure model with Interpretive Structural Modeling. Five original risk factors are identified, including contracts risk, requirements definition and change, lack of communication, political and legal environment differences, and exchange rate fluctuations. Finally, a risk management model of CN Group is put forward and three advices are proposed for software outsourcing business operation: project planning, project requirements, and communication.
Evaluation on Information Technology Service Management Process with AHP  [PDF]
Jiangping Wan, Hui Zhang, Dan Wan
Technology and Investment (TI) , 2011, DOI: 10.4236/ti.2011.21005
Abstract: Though analyzing the IT service management framework and associated processes of KM company, this paper determines various indicators of IT service management process. The weights of each indicator are calculated with analytical hierarchy process (AHP), and the evaluation was executed in KM company. And the suggestions are proposed with consideration of both the evaluation results and the real situation of KM company’s IT service management. The case is deeply considered in the views of IT service management objectives and misunderstandings, customer satisfaction model of IT service management, knowledge supporting structure of IT service management. It is concluded that if the organization wishes to successfully implement IT service management’s customer satisfaction model, it should eliminate the misunderstandings of IT service objectives first, while the adoption of knowledge supporting structure of IT service management can play a multiplier effect.
Research on Low-Carbon City Construction and Development Strategy—A Case Study of Shenzhen  [PDF]
Dan Yao, Jing Luo, Mu Zhang
Low Carbon Economy (LCE) , 2013, DOI: 10.4236/lce.2013.42007
Abstract:

Low carbon economy is full of significance to realize sustainable development of a city. After making a review of global low carbon community construction by summarizing their features and routes, the authors set up a low-carbon economical evaluation system which consists of 3 layers, 3 systems and 14 indicators. What’s more, PCA (principal component analysis) and AHP (analytic hierarchy process) are adopted to evaluate the level of low-carbon economic development in Shenzhen. The facts prove that Shenzhens low-carbon economic development level has formed certain foundation with up tendency in various indicators. Finally, the authors propose suggestions and strategies for developing low-carbon economic development for city of Shenzhen.

Reusable Function Discovery by Call-Graph Analysis  [PDF]
Dan Zhao, Li Miao, Dafang Zhang
Journal of Software Engineering and Applications (JSEA) , 2015, DOI: 10.4236/jsea.2015.84019
Abstract: Nowadays, one of the IT challenges faced by many enterprises is the maintenance of their legacy system and migration of those systems to modern and flexible platform. In this paper, we study the network properties of software call graphs, and utilize the network theories to understand the business logic of legacy system. The call graphs turn out approximately scale-free and small world network properties. This finding provides new insight to understand the business logic of legacy system: the methods in a program can be naturedly partitioned into the business methods group and supportive methods group. Moreover, the result is also very helpful in reusing valuable functionality and identifying what services should be to expose in the migration from legacy to modern SOA context.
Workspace Representation and Optimization of a Novel Parallel Mechanism with Three-Degrees-of-Freedom
Zhen Gao,Dan Zhang
Sustainability , 2011, DOI: 10.3390/su3112217
Abstract: The development of a new parallel mechanism based on simulation driven design is a rapid approach to discover the unique features or advantages of a conceptual model. In this research, one novel parallel mechanism which can generate three degrees-of-freedom translations is proposed. The kinematic model and Jacobian matrix is derived. The workspace generation and mapping is investigated based on simplified boundary searching method. The particle swarm algorithm is applied to search for the optimal volume of workspace.
Ordered SBA-15 mesoporous silica with high amino-functionalization for adsorption of heavy metal ions
Dan Zhang,JunHua Li
Chinese Science Bulletin , 2013, DOI: 10.1007/s11434-012-5594-0
Abstract: Surface NH2-functionalized SBA-15 mesoporous silica was synthesized using toluene diisocyanate (TDI) as a bridge molecule. First, the surface Si-OH groups of SBA-15 were reacted with the -NCO groups of TDI. Then, the remaining unreacted -NCO groups of TDI were reacted with the -NH2 groups of ethylenediamine (EDA). Finally, the NH2-groups were successfully grafted onto the mesoporous SBA-15 surface by the above two-step method. XRD, N2 adsorption-desorption analysis, FT-IR, and 29Si MAS NMR were used to identify the well-ordered structure and the successful incorporation of the -NH2 groups onto the surface of the synthesized materials. Characterizations revealed that such -NH2 grafting is an effective method to obtain a high loading of -NH2 groups onto the SBA-15. When subjected to toxic heavy metal ions in aqueous solution, the obtained NH2-functionalized SBA-15 showed very high adsorption rates 99.9%, 99.7%, 99.8%, 99.5% and 99.9% for Pb2+, Cr3+, Cd2+, Ag+ and the Cu2+, respectively, which is attributed to the strong complexation reactions between the metal ions and the grafted -NH2 groups.
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