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The Adjustment on Service Structure and Strategic Orientation of Postal Service

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The Journal of china Universities of Posts and Telecommunications 2004年第z1期11卷 88-93页

作者： WANG Wei-min~1, SUN Hao~2. XU Ru-wei~1 1.shijiazhuang Post and Telecommunication Technical College, shijiazhuang 05002., P.R. {2. 2.Hebei Normal University, shijiazhuang 050016, P.R. {2. shijiazhuang Post and Telecommunication Technical College Shijiazhuang 050021 P.R. China

The service structure of china post is not match the postal resources structure, Core service is not stressed. Therefore, the postal service must be reorganized and Adjusted according to the market needs. This article classify post service into five catalogues, proposes the strategic orientation of each catalogues and analyses the interior structure of different postal service.

关键词： core power postal core service postal service structure strategic orientation

Non-isothermal decomposition kinetics and lifetime of Tb2.0-MBA)6(PHEN)2

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Rare Metals 2003年第3期22卷 155-159页

作者： ZHANGJianjun BAIJihai WANGRuifen WANGShuping LIJibiao ExperimentalCenter NormalUniversityShijiazhuang050016China DepartmentofComputer HebeiNormalCollegeofScienceandTechnologyChangli066600China DepartmentofChemistry HebeiNormalUniversityShijiazhuang050091China

The thermal decomposition of Tb_2.O-MBA)_6(PHEN)_2.(O-MBA: o-methylbenzoate;PHEN: 1,10-phenanthroline) and its kinetics were studied under the non-isothermal condition bythermogravimetry-derivative thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtainedfrom analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) *** most probable mechanism function was suggested by comparing the kinetic parameters. The kineticequation for the first stage can be expressed as dα/dt = Aexp(-E/RT)·3(1 - α)^(2.3). Thelifetime equation at mass loss of 10% was deduced as lnτ= -2..742. + 19797.795/T by isothermalthermogravimetric analysis.

关键词： thermochimica non-isothermal kinetics TG-DTG terbium complex O-methylbenzoate 1,10-phenanthroline

Iron metabolism in the mononuclear phagocyte system

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Progress in Natural Science:Materials International 2008年第10期18卷 1197-1202页

作者： Weina Kong Xianglin Duan Zhenhua Shi Yanzhong Chang The Key Laboratory of Animal Physiology,Biochemistry and Molecular Biology of Hebei Province,Hebei Normal University,shijiazhuang 050016,china The Key Laboratory of Animal Physiology Biochemistry and Molecular Biology of Hebei Province Hebei Normal University Shijiazhuang 050016 China

The maintenance of body iron homeostasis requires the coordination of multiple regulatory mechanisms of iron *** mononuclear phagocyte system (MPS,composed of monocytes,macrophages,and their precursor cells) is crucial in the maintenance of iron *** of iron is carried out by specialized macrophages via engulfment of aged *** iron stores of macrophages depend on the levels of recovered and exported ***,the molecular mechanisms underlying iron homeostasis in macrophages are poorly *** studies characterizing the function and regulation of natural resistance-associated mac- rophage protein I (Nrampl),divalent metal transporter 1 (DMTI),HLA-linked hemechromatosis gene (HFE),ferroportin 1 (FPNI), and hepcidin are rapidly expanding our knowledge on the molecular level of MPS iron *** studies are deepening our under- standing about the molecular mechanism of iron homeostasis and iron-related diseases.

关键词： Mononuclear phagocyte system CD 163 Natural resistance-associated macrophage protein 1 Divalent metal transporter 1 HFE Ferroportin 1 Hepcidin

Re-Os age for molybdenite from the Gangdese porphyry copper belt on Tibetan plateau: Implication for geody- namic setting and duration of the Cu mineralization

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Science china Earth Sciences 2004年第3期47卷 221-231页

作者： HOU Zengqian1, QU Xiaoming1, WANG Shuxian2. DU Andao2. GAO Yongfeng3 & HUANG Wei4 1. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, {2. 2. National Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, {2. 3. {2. College of Economy, {2. 056000, {2. 4. Xizang Bureau of Geology and Mineral Resources, Lhasa 850000, {2. Chinese Acad Geol Sci Inst Mineral Resources Beijing 100037 Peoples R China Chinese Acad Geol Sci Natl Ctr Geoanal Beijing 100037 Peoples R China shijiazhuang Coll Econ Shijiazhuang 056000 Peoples R China Xizang Bur Geol & Mineral Resources Lhasa 850000 Peoples R China

The Gangdese porphyry copper belt consists of one large and five middle-small deposits in addition to dozens of ore-bearing porphyry bodies. The belt trends 350 km long along the EW-striking Gangdese batholith, and locally occurs as a string of beads extending about 50 km within the SN-trending rifting zones (grabens) on the Tibetan plateau. Monzonitic granite- porphyry and quartz monzonitic porphyry, as dominant host rocks, are shoshonitic and potassic calc-alkaline. Available dating data indicate that the ages of the shallow-level emplacement for these porphyries vary from 10 Ma to 18 Ma, which are identical to that of associated potassic calc-alkaline volcanic rocks (10—15 Ma) and mafic dykes (13—18 Ma). The timing and duration of Cu mineralization events are constrained by Re-Os ages for molybdenites from three porphyry copper deposits in the Gangdese porphyry copper belt. Five molybdenite samples from the Nanmu deposit yielded an 187Re-187Os isochron with a highly pre-cise age of (14.76?.2.) Ma; six molybdenites from the Chongjiang deposit gave an isochron age of (14.04?.16) Ma. Re-Os model ages for two molybdenite samples from Lakang抏 deposit vary from 13.5 Ma to 13.6 Ma, which are basically identical to isochron ages mentioned above. All the thirteen samples from these three deposits yielded a linear array in the isochron diagram with a higher correlation coefficient of 0.99719 and an isochron age of (14.39?.2.) Ma (1s error), suggesting an coeval event of the Cu mineralization and a shared source of ore materials for the Gangdese porphyry copper belt. Compared with the longer-lived felsic magmatic-hydrothermal system, the Cu mineralization is a relatively short event with duration of about 0.5 Ma, and usu-ally occurs in the later-stage of the complicate magmatic system. The emplacement age of the Gangdese porphyries indicates that they intruded after the rapid rising of the Gangdese Mountains at 2.—2. Ma, and formed in a post-collision crustal ex-tension env

关键词： porphyry copper deposit, Re-Os age, Gangdese, Tibetan plateau.

Cluster based node scheduling method for wireless sensor networks

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Science china(Information Sciences) 2012年第4期55卷 755-764页

作者： WANG Lei 1,2.WEI RuiZhong 2.& TIAN ZiHong 2.3 1 College of Software,Hunan University,Changsha 410082.china 2.Department of Computer Science,Lakehead University,Thunder Bay P7B 5E1,Canada 3 Mathematics and Information Science College,Hebei Normal University,shijiazhuang 050016,china 1. College of Software Hunan University Changsha 410082 China2. Department of Computer Science Lakehead University Thunder Bay P7B 5E1 Canada3. Mathematics and Information Science College Hebei Normal University Shijiazhuang 050016 China

By researching on the node scheduling problem of m-covered and connected sensor networks,a new concept of two-hops-cluster is proposed in this paper,and based on it,a new distributed node scheduling algorithm THCNS for allocating all nodes in the sensor network into k(k≤m) different groups {0,1,...,k 1} is designed,without requiring location *** algorithm guarantees that each group to be connected and maintains the coverage ratio with high *** analysis and simulation results show that it has better performance than previous randomized scheduling scheme,and can prolong the lifetime of the sensor network effectively.

关键词： node scheduling lifetime wireless sensor network two-hops-cluster

Identification of Forest Vegetation Using Vegetation Indices

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Chinese Journal of Population,Resources and Environment 2004年第4期2卷 12-16页

作者： Yuan Jinguo & Wang Wei College of Resource and Environmental Sciences, Hebei Normal University, shijiazhuang 050016, china College of Resource and Environmental Sciences Hebei Normal University Shijiazhuang 050016 China

Spectral feature of forest vegetation with remote sensing techniques is the research topic all over the world, because forest plays an important role in human beings' living environment. Research on vegetation classification with vegetation index is still very little recently. This paper proposes a method of identifying forest types based on vegetation indices, because the contrast of absorbing red waveband with reflecting near-infrared waveband strongly for different vegetation types is recognized as the theoretic basis of vegetation analysis with remote sensing. Vegetation index is highly related to leaf area index, absorbed photosynthetically active radiation and vegetation cover. Vegetation index reflects photosynthesis intensity of plants and manifests different forest types. According to reflectance data of forest canopy and soil line equation NIR=1.506R+0.0076 in Jingyuetan, Changchun of china, many vegetation indices are calculated and analyzed. The result shows that the relationships between

关键词： forest vegetation identification vegetation index remote sensing

About the convergence rates of a class of gene expression programming

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Science china(Information Sciences) 2010年第4期53卷 715-728页

作者： DU Xin1,2. & DING LiXin1 1State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072. {2. 2.epartment of Information Engineering, shijiazhuang University of Economics, shijiazhuang 050031, {2. 1. State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 China2. Department of Information Engineering Shijiazhuang University of Economics Shijiazhuang 050031 China

This paper studies the convergence rates of gene expression programming based on maintaining elitist (ME-GEP) by means of Markov chain and spectrum analysis. We obtain the following results: (1) ME-GEP algorithm converges to the global optimum in probability. (2. The convergence rates of ME-GEP algorithm depend on the revised spectral radius of transition matrix of Markov chain corresponding to the algorithm. (3) The upper bounds of revised spectral radius are estimated, which are determined by the parameters of ME-GEP algorithm. (4) As an application of the theoretical results acquired in the paper, the convergence rates of ME-GEP for the polynomial function modeling problem are also analyzed, which verifies the relations between the convergence rates and the algorithm parameters.

关键词： GEP ME-GEP convergence rates Markov chain revised spectral radius

Commuting Involutions with Fixed Point Set of Variable Codimension

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Acta Mathematica Sinica,English Series 2001年第3期17卷 425-430页

作者： Yan Ying WANG Zhen De WU Zhao Jing MENG Department of Mathematics,Hebei Normal University,shijiazhuang 050016.P.R.china E-mail:Wang Yangying@*** Department of Mathematics Hebei Normal University Shijiazhuang 050016 P. R. China

Special generators of the unoriented cobordism ring MO* are constructed to determine some groups Jn,kl1,l2.…,lm of cobordism classes in MOn containing a representative Mn admitting a （Z2.k-action with the fixed poi... 详细信息

Special generators of the unoriented cobordism ring MO* are constructed to determine some groups Jn,kl1,l2./sub>,…,lm of cobordism classes in MOn containing a representative Mn admitting a （Z2./sub>）k-action with the fixed point set of（n-li）-dimensional submanifolds of Mn.

关键词： Indecomposable class Fixed point set Projective space bundle (Z2.k-action

Pollen assemblage characteristics of lakes in the monsoon fringe area of china

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Chinese Science Bulletin 2008年第4期53卷 3354-3363页

作者： TIAN Fang1,2.XU QingHai1,2.3,LI YueCong1,2.CAO XianYong1,2.WANG XueLi1,2.& ZHANG LiYan1,2.1 College of Resources and Environmental Sciences,Hebei Normal University,shijiazhuang 050016,china 2.Hebei Key Laboratory of Environmental Change and Ecological Construction,shijiazhuang 050016,china 3 Key Laboratory of Western china’s Environmental System(Ministry of Education),Lanzhou University,Lanzhou 730000,china College of Resources and Environmental Sciences Hebei Normal University Shijiazhuang 050016 China Hebei Key Laboratory of Environmental Change and Ecological Construction Shijiazhuang 050016 China Key Laboratory of Western china’s Environmental System (Ministry of Education) Lanzhou University Lanzhou 730000 China

This paper presents the pollen assemblages from 108 surface sediment samples from 4 lakes(the Lake Daihai,Lake Hongjiannao,Lake Hulunnao and Lake Duikounao) in the monsoon fringe area of *** herb pollen taxa Artemisia,Chenopodiaceae,Poaceae and Compositae are the major components of pollen assemblages of the 4 lakes and Pinus,Betula,Quercus,Ulmus,Populus,Ostryopsis and Elaeagnaceae are frequently presented,which reflect regional and local vegetation *** mean similarity coefficients for samples from the Lake Daihai,Lake Hongjiannao,Lake Hulunnao and Lake Duikounao are 0.66 ± 0.17,0.71 ± 0.11,0.73 ± 0.12.and 0.67 ± 0.12.respectively,so pollen assemblages are relatively consistent in each lake,which shows that focusing and mixing effects have occurred before and after pollen ***,pollen assemblages do differ between sampling sites in each *** largest difference is seen in the Lake Daihai,followed by the Lake Duikounao,Lake Hulunnao and Lake Hongjiannao(The mean Euclidean distance is 2..09 ± 11.11,11.2. ± 3.64,10.67 ± 4.03 and 8.44 ± 4.51 respectively).These differences are possibly caused by the differences of focusing and mixing effects,pollen source areas,drainage areas and regional vegetation *** Lake Daihai and Lake Hongjiannao have water deeper than 5 m and strong re-suspension,focusing and mixing effects occur in the lakeshore and shallow water areas,where pollen concentrations are lower than in deeper lake *** the Lake Hulunnao and Lake Duikounao,with depths less than 5 m,re-suspension and mixing effects are obvious across the whole lake area,so pollen assemblages and pollen concentra-tions are more consistent among sampling sites in each *** between the lake samples and samples from the inflowing river reveals that wind is primary pollen transportation force in the Lake Hongjiannao,where the consistency of pollen assemblage is conspicuous,while there is greater variation in lakes where pollen input is

关键词：湖泊花粉相似系数欧几里得季风

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