Browsing by Author "Shen, Xiwei"

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    Application of Comprehensive Evaluation in New-Product-Development Evaluation: The Case of Landscape-Architectural Outdoor Wooden Furnishing
    Cui, Xiaolei; Ge, Mengting; Shen, Xiwei (MDPI, 2022-09-23)
    Successful new product development (NPD) is critical for modern outdoor wooden furnishing (OWF) manufacturing companies to achieve competitive success, since current users have the serious requirements of aesthetics, materials and environmental quality. Identifying the competitive performance of a product in development is an effective means to minimize the risk of failure. However, the literature reviews of the comprehensive evaluation (CE) model for OWF NPD are very rare. In this study, the CE method that applies three steps, which include constructing evaluation criteria, establishing a trapezoidal fuzzy analytic hierarchy process (AHP) and proposing a CE model is applied to assess the performance of a product in development and to minimize the risk of product failure in the market. The study aims to propose a CE approach for OWF NDP, which utilizes multiple methods that incorporate a literature review, questionnaire, Delphi method and fuzzy trapezoidal AHP. Finally, an integrated CE model is proposed to measure the competitive performance of NPD. A case study of a series of OWF in Harbin Pingfang Park, China is presented to illustrate the feasibility of the model. The result demonstrates that the proposed method predicts the performance of a product in development objectively and comprehensively. This evaluation method, being an assessment tool, can help designers and decision makers make better decisions and will predict the competitive performance of a product so as to reduce the risk of economic losses, not merely depending on previous experience and personal expectation.
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    An Evaluation Model of Riparian Landscape: A Case in Rural Qingxi Area, Shanghai
    Wang, Ling; Ge, Mengting; Chen, Naiguang; Ding, Jiahui; Shen, Xiwei (MDPI, 2022-09-08)
    The suburbs around Shanghai have a complex river network and a unique Chinese water-town culture. The riparian landscape in the rural Qingxi area has important regional, ecological, and social significance; it serves as an important part of the local bioclimate, but the existing studies on river vegetation did not pay enough attention to the riparian landscape in the countryside around the metropolis. The goal of this study was to examine a comprehensive evaluation model for the river plant landscape in the countryside surrounding a high-density metropolis such as Shanghai in the face of the national policy of rural revitalization and the low-carbon development problem, and to propose optimization strategies accordingly. Therefore, in this study, we selected 91 rivers in the Qingxi area and investigated their plant communities. According to the characteristics of the riparian landscape and its relationship with the river environment and local bioclimate, we classified the 91 riparian landscapes into four types of quadrats: natural landscape, residential recreation, roadside linear landscape, and agricultural landscape. In addition, based on the 13 indicator layers under the categories of ecological carrying capacity, landscape beauty, and social service, we calculated the comprehensive evaluation value (CEV) and comprehensive evaluation index (CEI) of 91 river quadrants using specific formulas to scientifically evaluate the riparian landscape in the rural Qingxi area of Shanghai. Finally, based on the existing problems summarized through data analysis, the researchers proposed five optimization directions: (1) increasing vegetation diversity, (2) choosing native and culturally representative species, (3) improving waterfront planting design, (4) achieving ecological riverbank construction, and (5) building greenway systems and recreational spaces. This study proposed an innovative evaluation model for the riparian vegetation landscape and tested its feasibility by site survey, which provided new visions for future rural landscape research.
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    Examining the Conceptual Model of Potential Urban Development Patch (PUDP), VOCs, and Food Culture in Urban Ecology: A Case in Chengdu, China
    Shen, Xiwei; Chen, Mingze; Ge, Mengting; Padua, Mary G. (MDPI, 2022-08-26)
    In China, traditional food is a significant element of culture that affects human behaviors. The point of interest (POI) of traditional food restaurants’ location and their volatile organic compounds (VOCs) emissions affect the urban ecology. Rather than examine potential urban development patch (PUDP) based on land use data, the perspective of this paper is to examine the PUDP, air quality, and food culture in urban ecology in Chengdu, China. Methods: First, the research identifies three types of PUDP models (open PUDP, landscape PUDP, and conflict PUDP) with the weighted overlay of land use data, then uses machine learning to examine the relationship between PUDP, POI of traditional food restaurant, and VOCs. Results: The study generates three types of PUDP which are open PUDP, landscape PUDP, and conflict PUDP. VOCs and POI of traditional restaurant have a strong correlation, and both have a significant negative correlation with open PUDP. However, the landscape PUDP and conflict PUDP do not show an obvious relationship with food POI and VOCs. Conclusion: The results indicate that the future urban ecology should consider restaurant location, VOCs from restaurants, and their relationship to urban land use data as they have a strong relationship.