Volume 2 Issue 1
Authors: Hua Sun; Fengxiang Han; Yan Fang; Wei Zou; Jiajia Lin; Juan Li
Abstract: The objective of this paper was to establish a complete evaluation index system on brownfield redevelopment, a case study of the Former Huishan Pesticide Factory in Wuxi City, China. In this paper, we used the Extreme Condition Method, the Fuzzy Comprehensive Evaluation Method and the AHP. Land suitability evaluation index system was successfully developed based on concentrations of soil pollutants considering the human health. The index system may be reused for residential, entertaining, commercial and industrial sites from the perspective of ecological, social and economic conditions. Results showed that the Former Huishan Pesticide Factory Brownfield could turn into residential sites, commercial sites and entertaining sites, which was entirely consistent with the actual planning. To carry out a rational and efficient layout, we advised the Former Huishan Pesticide Factory Brownfield to be turned into residential sites and commercial sites first and then entertaining sites. Besides, remediation methods could be adjusted according to the planning of land use in order to achieve the maximum benefits. The conclusion was that the suitability evaluation of brownfield redevelopment throughcombining the Land Suitability Class with the Construction Land Suitability Class was viable and effective.
Keywords: Evaluation index system; abandoned chemical plant; Wuxi city
Authors: Reza Habibi
Abstract: The model stability is an important condition, when analyzing a financial time series. This assumption may be violated because of changes in economical and financial conditions. In a parametric model, the model stability assumption is reduced to constancy of parameters of model. Rolling analysis is useful tool to detect changes in the parameters of a statistical model. This paper considers the rolling analysis for diffusion processes. Theoretical aspects are proposed and some simulation examples are given. A real data set is considered. A conclusion section is also given.
Keywords: Diffusion process; Financial time series; Model stability; Rolling analysis
Authors: Wen Gong; Lynda M. Maddox; Rodney L. Stump
Abstract: As online shoppers become progressively global and multicultural, more cross-cultural research is called for to better understand online consumers’ purchase behaviour. Based on the diffusion of innovation theory, literature on perceived risk in e-tailing and theories of national culture, this research investigates the perceptions of online consumers in China and the U.S. toward online shopping. A total of 503 Chinese consumers participated in a nationwide Internet survey in China and the results were compared to the data revealed by Pew Internet & American Life Project. Findings indicate that Chinese and American consumers hold significantly different perceptions regarding the relative advantage, ease of use, and risk of shopping on the Internet.
Keywords: Chinese Online Consumers; American Online Consumers; Internet Shopping; B2C Electronic Commerce; Online Shopping Attitudes
Authors: David Paper; Eric Pedersen; Chang Ruey-Dang
Abstract: The purpose of this study is to explore the use of a strategic process model by successful electronic commerce (EC) entrepreneurs of small and medium sized enterprises (SME) and articulate the components and interrelationships of such a model to readers. Exploration adhered to the qualitative tradition of phenomenology is employed to document the particulars of the study. Results revealed that EC entrepreneurs guide their business efforts with a systematic and strategic process model. A rich description of the model is documented including emergent themes, theme interrelationships, and process flow. Original themes and their inter-relationships were identified and explored through an iterative data coding process. This process included deep and iterative perusal of data transcripts as well as additional data collection to validate themes, remove inconsistent or redundant themes, and deepen our understanding of theme relationships.
Keywords: electronic commerce (EC); small and medium sized enterprises (SME); strategic EC process model; rich description; emic perspective
Authors: Reza Habibi
Abstract: This paper is concerned with change point detection using recursive estimation in non-linear time series. Specially, we consider the Black and Scholes (1973) option pricing model under stochastic volatility assumption. The test statistic is given and we describe how its null distribution may be simulated.
Keywords: Black-Scholes Models; Brownian bridge; Change point; Cusum; RML; SDE; Simulation