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智慧城市理念在城市景观设计中的应用探讨——以丽水市滨水慢行系统贺家溪段景观设计为例

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智能建筑与智慧城市 2024年第3期 165-167页

作者：范丽君丁伟中国城市发展规划设计咨询有限公司

文章以具体项目为例,分析运用智慧城市理念下的城市景观设计,以人为本、节约资源、生态可持续发展和一体化发展的设计原则,对丽水市滨水慢行系统贺家溪段的项目进行整合,分析了设计应用思路,介绍了具体的应用措施。

关键词：智慧城市景观设计以人为本

Large Sets of Pure Directed Triple Systems with Index λ

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Acta Mathematica Sinica,English Series 2010年第10期26卷 1899-1914页

作者： Bing li fan jun ling ZHOU Institute of Mathematics Beijing Jiaotong University Beijing 100044 P. R. China

A directed triple system of order v with index λ, briefly by DTS（v,λ）, is a pair （X, B） where X is a v-set and B is a collection of transitive triples （blocks） on X such that every ordered pair of X belongs to λ blocks of B. A simple DTS（v, λ） is a DTS（v, λ） without repeated blocks. A simple DTS（v, ）,） is called pure and denoted by PDTS（v, λ） if （x, y, z） ∈ B implies （z, y, x）, （z, x, y）, （y, x, z）, （y, z, x）, （x, z, y） B. A large set of disjoint PDTS（v, λ）, denoted by LPDTS（v, λ）, is a collection of 3（v - 2）/λ disjoint pure directed triple systems on X. In this paper, some results about the existence for LPDTS（v, λ） are presented. Especially, we determine the spectrum of LPDTS（v, 2）.

关键词： Large set directed triple system pure

Non-thermal emission from Vela X and PWN G0.9+0.1

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Chinese Journal of Astronomy and Astrophysics 2009年第4期9卷 449-456页

作者： Wei-fan Qiao li Zhang jun fang Department of Physics Yunnan University Kunming 650091 China

We study the multi-waveband non-thermal emission from the pulsar wind nebulae （PWNe） Vela X and G0.9＋0.1 in the frame of a time-dependent model describing non-thermal radiation from the PWNe. In such a model, the relativistic wind of particles driven by a central pulsar blows into the ambient medium and creates a termination shock that accelerates the particles to very high energy in a PWN. The non-thermal photons in the PWN are produced both by synchrotron radiation and the inverse Compton process, with electrons coming directly from the pulsar magnetosphere and electrons being accelerated at the termination shock. We apply this model to reproduce the observed multi-waveband photon spectra of Vela X and the G0.9＋0.1, both of which have been detected emitting very high energy photons. Our results indicate that TeV photons are produced by the inverse Compton scattering of the high-energy electrons in the infrared photon field in both Vela X and PWN G0.9＋0.1. The TeV photons from these two PWNe may have leptonic origins.

关键词： ISM individual objects Vela X, G0.9 + 0.1-gamma-rays theory

Quantile Trends in Temperature Extremes in China

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Atmospheric and Oceanic Science Letters 2014年第4期7卷 304-308页

作者： fan li-jun Key Laboratory of Regional Climate-Environment Research for Temperate East Asia (RCE-TEA) Institute of Atmospheric PhysicsChinese Academy of Science

A number of recent studies have examined trends in extreme temperature indices using a linear regression model based on ordinary least-squares. In this study, quantile regression was, for the first time, applied to examine the trends not only in the mean but also in all parts of the distribution of several extreme temperature indices in China for the period 1960–2008. For China as a whole, the slopes in almost all the quantiles of the distribution showed a notable increase in the numbers of warm days and warm nights, and a significant decrease in the number of cool nights. These changes became much faster as the quantile increased. However, although the number of cool days exhibited a significant decrease in the mean trend estimated by classical linear regression, there was no obvious trend in the upper and lower quantiles. This finding suggests that examining the trends in different parts of the distribution of the time-series is of great importance. The spatial distribution of the trend in the 90 th quantile indicated that there was a pronounced increase in the numbers of warm days and warm nights, and a decrease in the number of cool nights for most of China, but especially in the northern and western parts of China, while there was no significant change for the number of cool days at almost all the stations.

关键词： extreme temperature indices quantile trend quantile regression China

Statistically Downscaled Temperature Scenarios over China

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Atmospheric and Oceanic Science Letters 2009年第4期2卷 208-213页

作者： fan li-jun Key Laboratory of Regional Climate-Environment Research for Temperate East Asia （RCE-TEA） Institute of Atmospheric Physics Chinese Academy of Science Beo＇ing 100029 China College of Atmospheric Sciences Lanzhou University Lanzhou 730000 China

Monthly mean temperatures at 562 stations in China are estimated using a statistical downscaling technique. The technique used is multiple linear regressions （MLRs） of principal components （PCs）. A stepwise screening procedure is used for selecting the skilful PCs as predictors used in the regression equation. The predictors include temperature at 850 hPa （7）, the combination of sea-level pressure and temperature at 850 hPa （P＋T） and the combination of geo-potential height and temperature at 850 hPa （H＋T）. The downscaling procedure is tested with the three predictors over three predictor domains. The optimum statistical model is obtained for each station and month by finding the predictor and predictor domain corresponding to the highest correlation. Finally, the optimum statistical downscaling models are applied to the Hadley Centre Coupled Model, version 3 （HadCM3） outputs under the Special Report on Emission Scenarios （SRES） A2 and B2 scenarios to construct local future temperature change scenarios for each station and month, The results show that （1） statistical downscaling produces less warming than the HadCM3 output itself; （2） the downscaled annual cycles of temperature differ from the HadCM3 output, but are similar to the observation; （3） the downscaled temperature scenarios show more warming in the north than in the south; （4） the downscaled temperature scenarios vary with emission scenarios, and the A2 scenario produces more warming than the B2, especially in the north of China.

关键词： statistical downscaling temperature scenarios annual cycles China

Effect of Reduction in Iodine Content of Edible Salt on the Iodine Status of the Chinese Population

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Biomedical and Environmental Sciences 2018年第9期31卷 645-653页

作者： HE Qian SU Xiao Hui liU Peng fan li jun MENG fan Gang liU li Xiang li Ming liU Shou jun Institute for Iodine Deficiency Disorders Control Center for Endemic Disease Control Chinese Center for Disease Control and Prevention Harbin Medical University

Objective The aim of this study was to evaluate the impact of the revised Chinese National Standard GB26878-2011 ＇Iodine Content in Edible Salt＇ on the iodine status among the Chinese population. Methods In 2011 and 2014, the probability proportionate to size sampling（PPS） was used in each Chinese province to obtain the representative data. In each sampling unit, school children aged 8-10 years and pregnant women were selected. Key indicators included urinary iodine concentration（UIC）, thyroid volume（TV）, and the iodine content in edible household salt. Results The median urinary iodine concentration（MUIC） decreased between 2011 and 2014 from 238.6 to 197.9 μg/L in school-age children. The number of provinces with iodine excess decreased to zero. The proportion of children whose UIC was 〉 300 μg/L was 18.8% and decreased to 11% compared with 29.8% in 2011. There was no significant difference in UIC 〈 50 μg/L between 2014（4.3%） and 2011（3.7%）（P 〉 0.05）. The MUIC among pregnant women in 2014 was more concentrated between 110 and 230 μg/L. The goiter rate among children aged 8-10 years was unchanged, both the goiter rate of 2011 and 2014 remaining below 5%, in view of the sustainable elimination of iodine deficiency disorders. Conclusion The National Standard GB26878-2011 ＇Iodine Content in Edible Salt＇ that was introduced in March 2012 resulted in an overall improvement in iodine status, reducing the risk of excessive iodine intake in the Chinese population.

关键词： Urinary iodine concentration Thyroid volume PPS method

Serum Thyroglobulin——A Sensitive Biomarker of Iodine Nutrition Status and Affected by Thyroid Abnormalities and Disease in Adult Populations

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Biomedical and Environmental Sciences 2017年第7期30卷 508-516页

作者： DU Yang GAO Yan Hui FENG Zhuo Ying MENG fan Gang fan li jun SUN Dian jun Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityKey Lab of Etiology and EpidemiologyNational Health and Family Planning Commission(23618504) Heilongjiang Land Reclamation Bureau General Hospital

Objective To evaluate the usefulness of the thyroglobulin （Tg） level in adults as a nutritiona biomarker of iodine status and to identify the factors related to the serum Tg level. Methods A cross-sectional study was conducted in adult populations of areas differing in iodine nutrition from three provinces （Autonomous Region） in China. Serum levels of thyroid hormones and Tg as well as thyroid autoantibodies were measured. The thyroid volume and nodule were measured by ultrasound. A multivariate linear regression analysis was used to assess iodine intake and other indeterminate factors associated with the serum Tg level. Results A total of 573 adults were recruited for this study. The serum Tg levels differed significantly among the three groups （22.27 ~g/L, 9.73 pg/L and 15.77 pg/L in the excess, more-than-adequate, and deficient groups, respectively）. The results of multivariate linear regression analysis indicate that excess and deficient iodine intake, goiter, thyroid nodule, hypothyroidism are significantly related with higher Tg level, and TgAb positivity is significantly related with lower serum Tg. Conclusion The serum Tg level reflects abnormal thyroid function and is a sensitive functiona biomarker of iodine nutrition status.

关键词： High iodine Iodine deficiency Thyroglobulin

Effects of the Minimal Singular Value on the Performance of Echo State Networks

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Effects of the Minimal Singular Value on the Performance of ...

Time Series and Spatial Epidemiological Analysis of the Prevalence of Iodine Deficiency Disorders in China

第36届中国控制会议

作者： li fan-jun li Ying School of Mathematical Science University of Jinan School of Science Qilu University of Technology

ISBN: (纸本)9781538629185

Echo State Networks(ESNs) have attracted wide attention for their superior performance in time series *** performance of ESNs is heavily dependent on their reservoir parameters,which have to be tuned by hand for the best ***,it is important for successful design of ESNs to understand the inter-relationship between the performance and the *** paper investigates the effect of the minimal singular value on the performance of ESNs based on two computational *** reservoir weight matrix is constructed by using singular value decomposition,where the singular value spectrum is generated randomly from variable ***,using computational experiments with nonlinear ESNs,the relationship between the minimal singular value and the performance of ESNs is analysed.

关键词： Echo state network Singular value Reservoir Performance Singular value decomposition

来源： cnki会议评论

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cnki会议

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Biomedical and Environmental Sciences 2022年第8期35卷 735-745页

作者： fan li jun GAO Yun Yan MENG fan Gang liU Chang liU Lan Chun DU Yang liU li Xiang li Ming SU Xiao Hui liU Shou jun liU Peng Institute of lodine DeficiencyDisorders Center for Endemic Disease ControlChinese Center forDisease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina National Health Commission&Education Bureau of Heilongjiang Province Key laboratory of Etiology and EpidemiologyHarbin Medical UniversityHarbin 150081HeilongjiangChina

Objective To recognize the spatial and temporal characteristics of iodine deficiency disorders(IDD),China national IDD surveillance data for the years of 1995–2018 were *** Time series analysis was used to describe and predict the IDD related indicators,and spatial analysis was used to analyze the spatial distribution of salt iodine *** In China,the median urinary iodine concentration increased in 1995–1997,then decreased to adequate levels,and are expected to remain appropriate in 2019–*** goiter rate continually decreased and is expected to be maintained at a low *** 2002,the coverage rates of iodized salt and the consumption rates of qualified iodized salt(the percentage of qualified iodized salt in all tested salt) increased and began to decline in 2012;they are expected to continue to *** epidemiological analysis indicated a positive spatial correlation in 2016–2018 and revealed feature regarding the spatial distribution of salt related indicators in coastal areas and areas near iodine-excess *** Iodine nutrition in China showed gradual ***,a recent decline has been observed in some areas following changes in the iodized salt supply in *** the future,more regulations regarding salt management should be issued to strengthen IDD control and prevention measures,and avoid the recurrence of IDD.

关键词： Salt iodine lodine deficiency disorders Time series analysis Space epidemiology Reform for the salt industry system