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Comparison of multinomial logistic regression and logistic regression： which is more efficient in allocating land use？

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Frontiers of Earth Science 2014年第4期8卷 512-523页

作者： yingzhi lin Xiangzheng DENG Xing LI Enjun MA School of Mathematics and Physics China University of Geosciences Wuhan 430074 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China

Spatially explicit simulation of land use change is the basis for estimating the effects of land use and cover change on energy fluxes, ecology and the environment. At the pixel level, logistic regression is one of the most common approaches used in spatially explicit land use allocation models to determine the relationship between land use and its causal factors in driving land use change, and thereby to evaluate land use suitability. However, these models have a drawback in that they do not determine/ allocate land use based on the direct relationship between land use change and its driving factors. Consequently, a multinomial logistic regression method was introduced to address this flaw, and thereby, judge the suitability of a type of land use in any given pixel in a case study area of the Jiangxi Province, China. A comparison of the two regression methods indicated that the proportion of correctly allocated pixels using multinomial logistic regression was 92.98%, which was 8.47% higher than that obtained using logistic regression. Paired t-test results also showed that pixels were more clearly distinguished by multinomial logistic regression than by logistic regression. In conclusion, multinomial logistic regression is a more efficient and accurate method for the spatial allocation of land use changes. The application of this method in future land use change studies may improve the accuracy of predicting the effects of land use and cover change on energy fluxes, ecology, and environment.

关键词： multinomial logistic regression land usechange logistic regression land use suitability land useallocation

An equilibrium analysis of the land use structure in the Yunnan Province, China

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Frontiers of Earth Science 2014年第3期8卷 393-404页

作者： Jiao LUO Jinyan ZHAN yingzhi lin Chunhong ZHAO State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China School of Mathematics and Physics China University of Geosciences Wuhan 430074 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

Global land use structure is changing rapidly due to unceasing population growth and accelerated urbanization, which leads to fierce competition between the rigid demand for built-up area and the protection of cultivated land, forest, and grassland. It has been a great challenge to realize the sustainable development of land resources. Based on a computable general equilibrium model of land use change with a social accounting matrix dataset, this study implemented an equilibrium analysis of the land use structure in the Yunnan Province during the period of 2008-2020 under three scenarios, the baseline scenario, low TFP （total factor productivity） scenario, and high TFP scenario. The results indicated that under all three scenarios, area of cultivated land declined signifi- cantly along with a remarkable expansion of built-up area, while areas of forest, grassland, and unused land increased slightly. The growth rate of TFP had first negative and then positive effects on the expansion of built-up area and decline of cultivated land as it increased. Moreover, the simulated changes of both cultivated land and built-up area were the biggest under the low TFP scenario, and far exceeded the limit in the Overall Plan for Land Utilization in the Yunnan Province in 2020. The scenario-based simulation results are of important reference value for policy-makers in making land use decisions, balancing the fierce competition between the protection of cultivated land and the increasing demand for built-up area, and guaranteeing food security, ecological security, and the sustainable development of land resources.

关键词： land use land use structure computable general equilibrium model of land use change socialaccounting matrix scenarios Yunnan Province

Determination of DNA single-strand breaks by low-energy heavy ion and analysis of dose-effect curves

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Chinese Science Bulletin 1999年第8期44卷 711-715页

作者： Yanhua Du Shenghai Huang Zheng Tan yingzhi lin Guanying Qiu Wuhan Univ Coll Life Sci Wuhan 430072 Peoples R China

Calf thymus DNA was exposed to low-energy heavy ions (N+) and 60Co-γ-rays, and the dose-effect on DNA single-strand breaks (SSB) has been investigated. The results indicate that the dose-effect curve by N+ irradiation is different from that of conventional ionizing radiation. While the curve from γ-irradiation follows exponential type, the effect curve produced by N+ ion is of 'saddle type'. The yield of DNASSB per dose unit per DNA unit remained at a certain level under different doses of γ-rays. In contrast, the DNASSB at low dosage region of N+ showed an obvious peak before it decreased rapidly to a lower level.

关键词： ion implantation γ-rays 'saddle types' curve DNA single-strand breaks curve fitting.

Structural Progressive Mode of Urban Renewal and Public Participation in Shenzhen International Low Carbon City

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China City Planning Review 2016年第3期25卷 42-49页

作者： Li Fen Ye Qing lin yingzhi Liu Jinxin Research and Innovation Center Shenzhen Institute of Building Research Co.Ltd. Shenzhen Institute of Building Research Co. Ltd Shenzhen Institute of Building Research Co. Ltd.

By means of a structural progressive mode of urban renewal, which operates through small and medium-scale projects on the basis of public participation, the Shenzhen International Low Carbon City has provided propagable and replicable experience for urban planning and construction in urban marginal areas. This article fi rstly introduces the improvement measures for willingness and capabilities of public participation in the process of structural progressive renewal in the Shenzhen International Low Carbon City, and expounds the construction methods of participation approach, feedback mechanism, and interest balance, followed by an introduction of the rolling development strategy, micro municipal construction strategy and spatial-industrial-ecological integrated development strategy and practice experience, hoping to serve as a reference for the planning and construction of other cities in China.

关键词： low carbon city green development structural progressive renewal public participation Shenzhen International Low Carbon City

Factors and mechanism driving the land-use conversion in Jiangxi Province

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Journal of Geographical Sciences 2010年第4期20卷 525-539页

作者： ZHAN Jinyan SHI Nana HE Shujin lin yingzhi State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China

This article explores the factors and mechanism driving the land-use conversion at regional level by developing and using an econometric approach which is called the simultaneous equations model （SEM）. A case study in Jiangxi Province of China is conducted by establishing the SEM, which consists of three equations including agricultural production, land conversion of cultivated land to built-up area and land conversion of cultivated land to forest cover/grassland from 1988 to 2005. And then this paper employs the method of piecewise estimation to represent the influences of the factors such as population, society, economy, location and geophysical conditions on the process of land-use conversion in Jiangxi Province. Estimation results show that population is a predominant factor driving the land-use conversion at counties, while social and economic factors are determinant factors in the short term for the entire Jiangxi Province. Specifically, the size of agricultural population and the magnitude of agricultural input determine the agricultural production to a large extent; population size, plain area proportion at counties and land management policies together affect the direction and magnitude of conversion between cultivated land and built-up area; agricultural population proportion, terrain slope, grain production and non-agricultural industry promote the conversion of cultivated land to forest cover/grassland. Furthermore, the explored mechanism also reveals the underlying causes of the land use changes driven by a series of factors in Jiangxi Province. Finally, this paper concludes that factors proven to play an important role in driving the land-use conversion need to be considered when the land management agencies make out the land use planning to optimize the land use, expand the agricultural production, and conserve the cultivated land.

关键词： land use land-use conversion mechanism econometric model simultaneous equations model Jiangxi Province

Effect of hepatocyte growth factor signaling pathway activation on Plasmodium berghei infection

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Asian Pacific Journal of Tropical Medicine 2010年第3期3卷 169-172页

作者： Nantian Zhong Fengying Huang Guanghong Tan Jiege Jiao yingzhi lin CaichunWang Hua Wang Songlin Zhou Yonghao Huang Fan Chen Yingying lin Hainan Provincial Key Laboratory of Tropical Medicine Hainan Medical University Department of Histology and Embryology Hainan Medical University

Objective:To explore the effect of hepatocyte growth factor signaling pathway activation on Plasmodium berghei ***:In this study,hepatocyte growth factor was detected by ELISA and Western blotting *** injury was detected by FITC-dextran absorption assay,and hepatocyte growth factor expression was shown to be expressed in the same injury cells by immunofluorescence against hepatocyte growth *** addition,Activation of hepatocyte growth factor and its receptor signaling pathway was detected with immunoprecipitation and detection of phosphorylation ***:It was found that injury of hepatocytes by sporozoite migration induced the secretion of hepatocyte growth factor and it was hepatocyte growth factor that rendered hepatocytes susceptible to Plasmodium sporozoite *** addition,hepatocyte infections depended on activation of the hepatocyte growth factor and its receptor signaling ***:Our results indicate that hepatocyte growth factor and its receptor may possibly be potential targets for new approaches to malaria treatment.

关键词： Hepatocyte growth factor Malaria Plasmodium sporozoite Signaling pathway

Simulation on the dynamics of forest area changes in Northeast China

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Journal of Geographical Sciences 2010年第4期20卷 495-509页

作者： DENG Xiangzheng JIANG Qun＇ou ZHAN Jinyan HE Shujin lin yingzhi Institute of Geographic and Natural Resources Research CAS Beijing 100101 China Center for Chinese Agricultural Policy CAS Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China

There is plenty of forests in Northeast China which contributes a lot to the conservation of water and land resources, produces timber products, and provides habitats for a huge number of wild animals and plants. With changes of socio-economic factors as well as the geophysical conditions, there are dramatic changes on the spatial patterns of forest area. In this sense, it is of great significance to shed light on the dynamics of forest area changes to find the underlining reasons for shaping the changing patterns of forest area in Northeast China. To explore the dynamics of forest area change in Northeast China, an econometric model is developed which is composed of three equations identifying forestry production, conversion from open forest to closed forest and conversion from other land uses to closed forest so as to explore the impacts on the forest area changes from demographic, social, economic, location and geophysical factors. On this basis, we employ the Dynamics of Land System （DLS） model to simulate land-use conversions between forest area and non-forest cover and the land-use conversions within the sub-classes of forest area for the period 2000-2020 under business as usual scenario, environmental protection scenario and economic growth scenario. The simulation results show that forest area will expand continuously and there exist various kinds of changing patterns for the sub-classes of forest area, for example, closed forest will expand continuously and open forest and shrub will decrease a little bit, while area of other forest will keep intact. The research results provide meaningful decision-making information for conserving and exploiting the forest resources and makJng out the planning for forestry production Jn the Northeast China region.

关键词： forest area forestry production econometric model dynamics of land system Northeast China

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侯孝贤生平与作品年表

当代电影 2006年第5期 78-79页

作者：林盈志

1947年生于广东梅县.1969年,考上台北国立艺术专科学校电影科.1973年,进入电影界,担任李行《心有千千结》的场记.1974年,担任邱刚健《双龙谷》的场记.

关键词：年表作品生平艺术专科学校电影界孝李行

Theoretical Discussion of Couple-Mode Using Chirped Fiber Grating for Dispersion Compensation

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The Journal of China Universities of Posts and Telecommunications 1998年第1期5卷 29-33页

作者： Sun yingzhi and lin Jintong (Institute of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China)

In the high rate optical communication system, the loss and dispersion are important factors which affect the distance and volume of optical communication seriously. With successful researching and applications of EDFA in the system, the loss has not been the most important factor affecting the quality of communication, but the dispersion is now still an important factor which will cause the optical pulse broad. Now the best way to compensate the dispersion of optical communication is using the linearly chirped fiber gratings. In this paper, the couple mode equation of chirped fiber grating to compensate the dispersion is offered and discussed, meanwhile, the problem of the transmitting and reflecting rate is a sitting function. The dispersive coefficient and coupled coefficient of compensator using chirped fiber gratings are also further studied.

关键词： dispersion compensation chirp fiber grating