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Search Results: 1 - 10 of 2830 matches for " Fuhai Geng "
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Plant Nutrient Solution Detection System Based on ZigBee Wireless Technology  [PDF]
Binyue Chen, Fuhai Zhang
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.66006
Abstract: Based on the limitations of traditional plant nutrient solution detection, a ZigBee plant nutrient solution detection system based on CC2530 was developed. This system uses CC2530 as the main control chip, DS18B20 as the temperature sensor for temperature acquisition, PH electrode sensor for PH value acquisition. The experiment shows that this wireless control system equipped with temperature and pH detection sensor collects and samples the main nutrient solution parameters through the main controller, performs wireless communication transmission and terminal communication, and realizes the intelligent detection of plant nutrient solution parameters. This technique of applying wireless sensor network technology to plant factories greatly improves the reliability and stability of the nutrient monitoring system.
The Association between Cold Spells and Pediatric Outpatient Visits for Asthma in Shanghai, China
Yuming Guo, Fan Jiang, Li Peng, Jun Zhang, Fuhai Geng, Jianming Xu, Canming Zhen, Xiaoming Shen, Shilu Tong
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0042232
Abstract: Background Asthma is a serious global health problem. However, few studies have investigated the relationship between cold spells and pediatric outpatient visits for asthma. Objective To examine the association between cold spells and pediatric outpatient visits for asthma in Shanghai, China. Methods We collected daily data on pediatric outpatient visits for asthma, mean temperature, relative humidity, and ozone from Shanghai between 1 January 2007 and 31 December 2009. We defined cold spells as four or more consecutive days with temperature below the 5th percentile of temperature during 2007–2009. We used a Poisson regression model to examine the impact of temperature on pediatric outpatient visits for asthma in cold seasons during 2007 and 2009. We examined the effect of cold spells on asthma compared with non-cold spell days. Results There was a significant relationship between cold temperatures and pediatric outpatient visits for asthma. The cold effects on children's asthma were observed at different lags. The lower the temperatures, the higher the risk for asthma attacks among children. Conclusion Cold temperatures, particularly cold spells, significantly increase the risk of pediatric outpatient visits for asthma. The findings suggest that asthma children need to be better protected from cold effects in winter.
Aerosol scattering coefficients and the factors affecting them in Shanghai Pudong

XU Jianming,GENG Fuhai,ZHEN Canming,GAO Wei,

环境科学学报 , 2010,
Abstract: Aerosol scattering coefficients (ASC) were investigated based upon the nephelometer measurement data at Shanghai Pudong station during 2008. The major factors which have an important influence on the ASC were also studied. The results show that anthropogenic aerosol emissions had significant influence on the variability of the ASC. During weekends (when there are less anthropogenic aerosol emissions),the ASC was much lower than on weekdays. A strong diurnal variation of ASC was observed,with two maxima and ...
Source apportionment of VOCs at city centre of Shanghai in summer

CAI Changjie,GENG Fuhai,YU Qiong,AN Junlin,HAN Jingjing,

环境科学学报 , 2010,
Abstract: VOCs were sampled from 6:00~9:00 am nearly every day from 2006~2008 in Xujiahui-the city centre of Shanghai. A receptor model based on principal component analysis/absolute principal component scores (PCA/APCS) was used to identify the major sources of VOCs and evaluate their contributions. In summer, 34% of the total VOC concentrations were attributed to vehicle related emissions, 24% to fuel evaporation (including LPG/NG leakage and gasoline evaporation), 16% to solvent usage, 14% to industrial production, and 12% to biomass/biofuel burning and ocean sources. For aromatics, 35% was attributed to solvent usage, 26% to vehicle related emissions, 22% to industrial production and 17% to fuel evaporation. For alkenes, vehicle related emissions and fuel evaporation are the main sources, accounting for 49% and 40%, respectively. For alkanes, vehicle related emissions accounted for 45%, fuel evaporation for 32% and solvent usage for 12%. Finally, the simulated values fit the known VOC source profiles, thus the PCA/APCS receptor model is verified.
Halpern-type Iterations for Strong Relatively Nonexpansive Multi-valued Mappings in Banach Spaces
Studies in Mathematical Sciences , 2012, DOI: 10.3968/j.sms.1923845220120402.1994
Abstract: In this paper, an iterative sequence for strong relatively nonexpansive multi-valued mapping by modifying Halpern’s iterations is introduced, and then some strong convergence theorems are proved. At the end of the paper some applications are given also. Key words Multi-valued mapping; Strong relatively nonexpansive; Fixed point; Iterative sequence; Normalized duality mapping
On pseudo-Riemannian Lie algebras: a class of new Lie-admissible algebras
Zhiqi Chen,Fuhai Zhu
Mathematics , 2008,
Abstract: M. Boucetta introduced the notion of pseudo-Riemannian Lie algebra in [2] when he studied the line Poisson structure on the dual of a Lie algebra. In this paper, we redefine pseudo-Riemannian Lie algebra, which, in essence, is a class of new Lie admissible algebras and prove that all pseudo-Riemannian Lie algebras are solvable. Using our main result and method, we prove some of M. Boucetta's results in [2, 3] in a simple and new way, then we give an explicit construction of Riemann-Lie algebras and a classification of pseudo-Riemannian Lie algebras of dimension 2 and 3.
Analysis of a haze event by micro-pulse light laser detection and ranging measurements in Shanghai

PAN Hu,GENG Fuhai,CHEN Yonghang,HE Qianshan,ZHANG Hu,KANG Yanming,MAO Xiaoqin,WANG Hongqiang,

环境科学学报 , 2010,
Abstract: 通过分析2008年6月至2009年5月期间浦东新区灰霾天气出现的特征,并以2008年12月19日至2008年12月21日一次典型的灰霾天气过程为例,利用激光雷达(Light laser detection and ranging,简称Lidar)数据资料反演得到气溶胶消光系数及其强度图和廓线图,结合地面气象数据和气溶胶观测资料,分析了此次灰霾天气形成的原因.一年的观测资料表明,上海地区冬季和春季易产生灰霾天气,冬季出现重度霾最多,秋季和夏季灰霾天气较少.较弱的太阳辐射以及静风、小风是导致灰霾天气发生的重要原因,且高湿度的霾天气对能见度影响更大.大气边界层(以下简称边界层)高度变化决定着灰霾天气发生的强度,当边界层高度在1km左右时,易发生轻微霾天气,当边界层高度降至600m左右时,易发生中度、重度霾天气,而太阳辐射强度变化决定着边界层高度的变化.轻微霾天气下,大气气溶胶垂直分布最强消光值约为015km-1,而重霾天气下可达0.30km-1以上.本次霾过程还受地面颗粒物排放的影响,主要是PM1和PM2.5,且在消光作用中散射性气溶胶的贡献大于吸收性气溶胶.轻微霾天气下PM2.5 浓度为50μg·m-3,黑碳浓度为5000ng·m-3,浊度为200Mm-1,而重度霾时则分别达到200μg·m-3、24000 ng·m-3和1400Mm-1.随着此次霾的出现,整层大气气溶胶光学厚度(AOD,550nm)不断增加,在重度霾时达到0.6左右,Angstrom指数在重度霾时显著降低,表明有大颗粒物导入,说明此次重度霾天气的发生还与气溶胶的输送有关.
Research on How to Deal with the Dilemma of Global Cooperative Governance of Cross-Border Telecom Network Fraud in China  [PDF]
Yingchao Geng
Chinese Studies (ChnStd) , 2017, DOI: 10.4236/chnstd.2017.64023
Abstract: The rapid growth of cross-border telecom network fraud in the globalized information ocean and the economic tide has posed a threat to China and the global security and stability, and its governance is imminent. Under the analysis framework of global collaborative governance, this paper analyzes the external environmental factors and related internal governance factors, such as the background of cross-border telecom network fraud governance, which needs our attention. From the level of synergetic governance and the autonomy of the subject, the analysis of this paper draws a conclusion that cross-border telecom network fraud improvement is confronted with many dilemmas, for instance, the difficulty in reaching a consensus of values, the malconformation of legal norms, the high pressure of public opinion and the weakness of human nature. The paper puts forward the countermeasures based on Chinese perspective, from four aspects of value guidance, legal soundness, system regulation and technical complementation to work with all parties to manage the main forces, to combat and prevent cross-border telecommunications network fraud, achieving a good prospect of shared governance.
Fixed point theorems for generalized multivalued mappings in cone metric spaces
Fuhai Wang,Shin Min Kang,Shenghua Wang
International Journal of Mathematical Analysis , 2013,
Abstract: In this paper, we prove some fixed point theorems for generalizedmultivalued mappings by using the c-distance recently introduced byCho, Saadati and Wang [Y.J. Cho, R. Saadati and S.H. Wang, Commonfixed point theorems on generalized distance in ordered cone metricspaces, Comput. Math. Appl. 61 (2011), 1254-1260].Our results improve and generalize the correspond ones of ′Ciri′c [6],Feng and Liu [7], Kim and Wardowshi [13], Latif and Abdou [14], Mizoguchiand Takahashi [16].
Strong Convergence Theorems for a Generalized Equilibrium Problem with a Relaxed Monotone Mapping and a Countable Family of Nonexpansive Mappings in a Hilbert Space
Shenghua Wang,Giuseppe Marino,Fuhai Wang
Fixed Point Theory and Applications , 2010, DOI: 10.1155/2010/230304
Abstract: We introduce a new iterative method for finding a common element of the set of solutions of a generalized equilibrium problem with a relaxed monotone mapping and the set of common fixed points of a countable family of nonexpansive mappings in a Hilbert space and then prove that the sequence converges strongly to a common element of the two sets. Using this result, we prove several new strong convergence theorems in fixed point problems, variational inequalities, and equilibrium problems.
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