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J* E* C* N* U* N* S* 2012 Vol.2012 Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Phytoremediation of heavy metals and rhizosphere detection of bacteria in a drainage river sediment WANG Lei， QI Pei-shi， XIN Ming Journal of East China Normal University(Natural Sc    2012, 2012 (1): 1-10, 36.   Abstract （3141）      PDF（pc） （4068KB）（2466）       Knowledge map    Save Concentrations of heavy metals (Pb, Zn, Cr, As, Ni, Cu and Cd) in a drainage river sediment were determined from the industrial area of Harbin city in Heilongjiang Province. Pot experiment was conducted to evaluate the potential of four spontaneous plants, 〖WTBX〗Zea mays 〖WTBZ〗L., 〖WTBX〗Polygonum lapathifolium 〖WTBZ〗L., 〖WTBX〗Solanum nigrum〖WTBZ〗 L. and 〖WTBX〗Rumex patientia〖WTBZ〗 L. for heavy metals phytoremediation in the drainage river sediment contaminated with industrial effluent. The results revealed that the sediment was polluted by heavy metals. The contents of residual fractions of the 7 heavy metals decreased, while the Fe-Mn oxide fractions and exchangeable fractions consistently increased via two-season cultivations. Sequential extraction results confirmed the capability of the four plants to increase the bioavailability of these heavy metals. The concentrations of heavy metals in sediments and plants were in the same trend: Zn＞Pb ＞Ni＞Cr＞Cu＞As＞Cd, which reflected the biomonitoring potentialities of the tested plants. The heavy metals accumulations and translocations of the four plants were investigated. The results showed that the plants accumulated more Zn and Ni than the other metals; and the concentrations of Cu in shoots were low. Zinc and Ni levels in plant samples ranged from 108.4 mg/kg in shoots to 543.92 mg/kg in roots and 36.8 mg/kg in shoots to 246.91 mg/kg in roots of different species, respectively. Generally, the four species excluded multiple metals from the shoot tissues and accumulated in root zones, behaving as tolerant plants. However, polygonum lapathifolium L., Rumex patientia L. and Solanum nigrum L. showed high Pb, Zn and Cd shoot accumulation with high metal translocation factor (TF>1), respectively. It suggested the three species had phytoextraction potentialities. In addition, florescence in situ hybridization (FISH) was used to analyze the amount and distribution of bacteria in the rhizosphere sediment. It suggested the four plants have effect on bacterial activations. Reference | Related Articles | Metrics | Comments（0） Select Influence of nitrogen and phosphorus concentrations on the growth characteristics of Microcystis aeruginosa ZHENG Xiao-yu, JIN Yan, REN Xiang-yu, GU Yong-jie,ZHU Yong-qing, YANG yi-fan Journal of East China Normal University(Natural Sc    2012, 2012 (1): 11-18.   Abstract （3180）      PDF（pc） （1477KB）（2638）       Knowledge map    Save Microystis aeruginosa was cultured in solutions of different initial nitrogen and phosphorus concentrations. The semi-saturation constants (Ks) of Microystis aeruginosa to P and N were calculated respectively by using the Monod equation. The results show that the Microystis aeruginosa grew normally when the concentrations of N and P were greater than 4.0 mg·L-1 and mg·L-1 respectively. The optimum concentration ranges of N and P for Microystis aeruginosa growth were 32.0~64.0 mg·L-1 and 1.0~1.50 mg·L-1 respectively. KsN is higher than Ksp,  which indicates that the affinity of P to Microystis aeruginosa is higher than N. When the concentration ranges of N and P were 0.20~64.0 mg·L-1 and 0.02~1.50 mg·L-1 respectively，they had high liner correlation with the largest extent quantity of Microystis aeruginosa. The special growth rate increases continuously when the concentration ranges of N and P are 0.20~1.60 mg·L-1 and 0.02~0.50 mg·L-1 respectively. Reference | Related Articles | Metrics | Comments（0） Select Experimental study on the adaptability of juvenile Myxocyprinus asiaticus to the estuarine waters WANG Feng-yi, LU Jian-jian Journal of East China Normal University(Natural Sc    2012, 2012 (1): 19-26.   Abstract （2174）      PDF（pc） （2543KB）（2328）       Knowledge map    Save The adaptability of juvenile Myxocyprinus asiaticus to the estuarine waters was experimentally studied by investigating the survival ratios, the superoxide dismutase (SOD) activities in its' liver, the Na+/K+-ATPase activities response in its’ gill to different salinity stresses and joint stresses of nitrate and phosphate. The result showed that, the survival was 100% when the salinity was below 10.There were not significant differences of the SOD activities and the Na+/K+-ATPase activities between salinities 3 and 0 （p>0.05）, respectively. The survival was 100% when the water quality was better than Ⅳ. The SOD activities and the Na+/K+-ATPase activities in water quality Ⅳ was higher than that in Ⅱ and Ⅲ (p<0.05). In conclusion, juvenile Myxocyprinus asiaticus have strong adaptability when the salinity is below than 3 and water quality is superior to Ⅲ, and that means that the current environmental situation at the upper section of Yangtze Estuary can provide juvenile Myxocyprinus asiaticus with adaptive water quality to live. Reference | Related Articles | Metrics | Comments（0） Select Chlorinity distribution and water intake operation of the Chenhang Reservoir during saltwater intrusions in the Yangtze Estuary SHEN Yi-chen, LI Lu, ZHU Jian-rong Journal of East China Normal University(Natural Sc    2012, 2012 (1): 27-36.   Abstract （2278）      PDF（pc） （4209KB）（2745）       Knowledge map    Save In order to supply water during severe saltwater intrusions in the Yangtze Estuary, the Chenhang Reservoir sometimes took brackish water. The chlorinity in the reservoir was measured during November 27 in 2009 to March 12 in 2010. Combined with the river discharge, water level, wind stress, chlorinity at the upstream station and its inlet，the saltwater intrusion in the estuary, the way of water intake operation, and temporal/spatial variations of the chlorinity in the reservoir were analyzed. The simulated results showed that, the upstream was tended to be present around its eastern coastline under westward wind. Before the brackish water reached the reservoir, the amount of the water intake was increased to make it to high water level. At the beginning of a saltwater intrusion, the reservoir took the brackish water to keep its higher water level. In the later of the saltwater intrusion, some freshwater was taken from the Baogang Reservoir and the amount depended on the intensity of saltwater intrusion. Furthermore, the water intake from the Yangtze River must be paused when the chlorinity at the supply outlet in the reservoir was close to 250 mg/L. The measured data indicated that the chlorinity of the reservoir was increased when the brackish water in-taking was conducted and experienced a spatial variation under different wind stresses. The water intake operation of the Chenhang Reservoir was dependent on the chlorinity inside/outside it. In addition, its water level, the chlorinity in its upstream as well as the wind stress should also be taken into account. This study can bring experience to the reservoirs built in estuaries for better operation. Reference | Related Articles | Metrics | Comments（0） Select Modeling of seawater reflectance in the Yangtze Estuary and the adjacent sea HONG Guan-lin, SHEN Fang, SHEN Hong Journal of East China Normal University(Natural Sc    2012, 2012 (1): 37-46.   Abstract （2995）      PDF（pc） （3551KB）（2847）       Knowledge map    Save The optical properties of the Yangtze Estuarine waters were discussed based on two investigations conducted respectively in August and November of 2009. It was found that the water-leaving reflectance spectra in August and November presented four types caused by different chlorophyll-a concentrations, suspended sediment concentrations and colored dissolved organic matters (CDOM). The relationships between chlorophyll-a concentration and absorption coefficient of the pigment particles were built by two ways, and two models used to simulate the reflectance spectra were established by using the parameterized optical properties, the RMSE of these models being 0.004 4 and 0.004 5, respectively. The accuracy of the model can be improved by classifying the concentrations of chlorophyll-a and suspended sediment, the RMSE was improved to 0.003 5. Reference | Related Articles | Metrics | Comments（0） Select Long-term potentiation of prefrontal cortex in NR1 knockout mice YANG Li-guo, ZENG Qing-wen, ZHANG Xu-liang, CAO Xiao-hua Journal of East China Normal University(Natural Sc    2012, 2012 (1): 47-53.   Abstract （2883）      PDF（pc） （1731KB）（2670）       Knowledge map    Save This study investigated the prefrontal synaptic plasticity of forebrain-specific NR1 knockout mice by using the vitro field potential recording technique. The results from the input-output and paired pulse depression curves suggest that the basal synaptic transmission is normal in the prefrontal cortex of NR1 knockout mice. Prefrontal long-term potentiation (LTP) induced by high frequency stimulation (two trains of 100 Hz with 1 s duration and 30 s interval) was abolished in slices of NR1 knockout mice. These results indicate that NR1 is critical in the induction of long-term potentiation in prefrontal cortex. Reference | Related Articles | Metrics | Comments（0） Select βCaMKII overexpression impairs long-term depression in dentate gyrus of mice XU Hao, WANG Bo, DUAN Yan-hong, CAO Xiao-hua Journal of East China Normal University(Natural Sc    2012, 2012 (1): 54-62.   Abstract （2646）      PDF（pc） （1356KB）（2911）       Knowledge map    Save This experiment was designed to investigate the effects of the βCaMKII on the long-term depression (LTD) in dentate gyrus（DG）by using the transgenic mice in which the overexpression of βCaMKII is restricted to the DG area. Compared to the control group, the paired-pulse depression curve and voltage-current response in DG of transgenic mice didn’t change, but the LTD was significantly reduced. These results suggest that overexpression of the βCaMKII may impair the long-term depression without effect on the presynaptic function and passive properties of granule cells in DG area. Reference | Related Articles | Metrics | Comments（0） Select  $\lambda$ point and $\lambda$ property in generalized Orlicz spaces with Luxemburg norm SHI Zhong-rui, ZHAI Jia-yu Journal of East China Normal University(Natural Sc    2012, 2012 (1): 63-73.   Abstract （2254）      PDF（pc） （219KB）（2349）       Knowledge map    Save In this paper, we gave the sufficient and necessary conditions of $\lambda$ point in a generalized Orlicz function space equipped with the Luxemburg norm, by methods used in classical Orlicz spaces and new methods introduced especially for generalized ones. The results indicate the difference between points in the unit balls of classical and that of generalized Orlicz spaces: all of the classical spaces are $\lambda$ points, but some of the generalized spaces are not. Finally, we gave the criteria of the $\lambda$ property and the uniform $\lambda$ property of generalized spaces. Reference | Related Articles | Metrics | Comments（0） Select System of variational inclusions with ${(\emph{\textbf{H}},{\bm\phi})}$-$\bm\eta$-monotone operators in Banach spaces ZHANG Chao Journal of East China Normal University(Natural Sc    2012, 2012 (1): 74-83.   Abstract （2857）      PDF（pc） （202KB）（2307）       Knowledge map    Save This paper introduced a new system of variational inclusions with $(H,\phi)$-$\eta$-monotone operators in real uniformly smooth Banach spaces. By using the proximal mapping technique associated with $(H,\phi)$-$\eta$-monotone operators, we proved the existence and uniqueness of solution for this new system and construct a new iterative algorithm for approximating the solution of this system. The convergence of the iterative sequence generated by the iterative algorithm was also discussed. The results extend and improve some known results in the literature. Reference | Related Articles | Metrics | Comments（0） Select A graph \emph{G} is said to be \emph{determined by its spectrum} if any graph having the same spectrum as that of \emph{G} is isomorphic to \emph{G}. In this paper, it was proved that $K_{n}-E(lP_{2}) $ and $K_{n}-E(K_{1,l})$ are determined by their spectra, respectively. WU Ting-zeng, HU Sheng-biao Journal of East China Normal University(Natural Sc    2012, 2012 (1): 84-87.   Abstract （2370）      PDF（pc） （162KB）（2175）       Knowledge map    Save A graph \emph{G} is said to be \emph{determined by its spectrum} if any graph having the same spectrum as that of \emph{G} is isomorphic to \emph{G}. In this paper, it was proved that $K_{n}-E(lP_{2}) $ and $K_{n}-E(K_{1,l})$ are determined by their spectra, respectively. Reference | Related Articles | Metrics | Comments（0） Select Proofs and applications for a combinatorial identity SHI Jian-yi, WANG Wei Journal of East China Normal University(Natural Sc    2012, 2012 (1): 88-96.   Abstract （2465）      PDF（pc） （408KB）（2204）       Knowledge map    Save This paper considered a combinatorial identity related to some combinatorial enumeration problems involving the number $n^{n-2}$. The identity was proved in three different ways, which were in the theory of functions of complex variables, in graph theory, and in combinatorics, respectively. Finally, the identity was applied to enumerate certain kind of graphs and also the admissible sign types of type A. Reference | Related Articles | Metrics | Comments（0） Select Property of an orthogonal projection matrix DU Kun, GU Gui-ding Journal of East China Normal University(Natural Sc    2012, 2012 (1): 97-99.   Abstract （7990）      PDF（pc） （210KB）（2858）       Knowledge map    Save In this paper we showed that for an orthogonal projection matrix with rank $k$, there exists an principal submatrix with order $k$ of the matrix, such that its Rayleigh quotient has a positive lower bound. The proof was made by using the relation of the singular values, eigenvalues and norm of matrices, as well as the properties of unitary matrix and compound matrix. Reference | Related Articles | Metrics | Comments（0） Select Prolongation structure of the coupled nonlinear evolution equation JIA Yang-jie Journal of East China Normal University(Natural Sc    2012, 2012 (1): 100-105.   Abstract （2294）      PDF（pc） （238KB）（2297）       Knowledge map    Save The coupled KdV equation proposed by is investigated in the framework of prolongation structure theory. Its Lax representation of prolongation algebra is constructed. Reference | Related Articles | Metrics | Comments（0） Select Subspace-supercyclicity and common subspace-supercyclic vectors ZHAO Xian-feng, SHU Yong-lu, ZHOU Yun-hua Journal of East China Normal University(Natural Sc    2012, 2012 (1): 106-112, 120.   Abstract （2521）      PDF（pc） （247KB）（3081）       Knowledge map    Save A bounded linear operator $T$ on Banach space is subspace-supercyclic for a nonzero subspace $M$ if there exists a vector whose projective orbit intersects the subspace $M$ in a relatively dense set. We constructed examples to show that subspace-supercyclic is not a strictly infinite dimensional phenomenon, and that some subspace-supercyclic operators are not supercyclic. We provided a subspace-supercyclicity criterion and offered two necessary and sufficient conditions for a path of bounded linear operators to have a dense $G_\delta$ set of common subspace-hypercyclic vectors and common subspace-supercyclic vectors. Reference | Related Articles | Metrics | Comments（0） Select Oscillations of a class of third order nonlinear neutral functional differential HAN Zhong-yue Journal of East China Normal University(Natural Sc    2012, 2012 (1): 113-120.   Abstract （2017）      PDF（pc） （190KB）（2434）       Knowledge map    Save The oscillations of a class of third order nonlinear neutral functional differential equations was discussed, by using the generalized Riccati transformation and the integral averaging technique; and some new  sufficient conditions for oscillations or tends to zero of all solutions of the equations were obtained. The example  to illustrate the main results were given. The results extend and improve some known results. Reference | Related Articles | Metrics | Comments（0） Select Numerical solution of a non-arbitrage liquidity model based on uncertain volatility NIU Cheng-hu, ZHOU Sheng-wu Journal of East China Normal University(Natural Sc    2012, 2012 (1): 121-129, 137.   Abstract （2324）      PDF（pc） （546KB）（2348）       Knowledge map    Save The option pricing model in illiquidity markets was  expanded to general situations by introducing two kinds of uncertain volatility models. As it is difficulty to get analytical solutions for the model in complicated cases, a numerical solution was discussed by establishing corresponding differential equations; and the stability and consistency of the sdution were proved. Finally, the influence of some parameters to the solution was provided in numerical examples. The results show that the algorithm reduced the restriction on step-length requirements, and satisfactory approximation can be found with less computation. Reference | Related Articles | Metrics | Comments（0） Select One-dimensional BSDEs with monotonic, H\"{o}lder continuous and Integrable parameters XIAO Li-shun,LI Hui-ying,FAN Sheng-jun Journal of East China Normal University(Natural Sc    2012, 2012 (1): 130-137.   Abstract （2187）      PDF（pc） （228KB）（2457）       Knowledge map    Save This paper established a new existence and uniqueness result for solutions to one-dimensional backward stochastic differential equations (BSDEs) with only integrable parameters, where the generator $g$ is monotonic in $y$ and $\alpha$-H\"{o}lder ($0<\alpha<1$) continuous in $z$. By Tanaka's formula and Girsanov's theorem we established a comparison theorem for solutions in $L^1$ to BSDEs, from which the uniqueness follows. By convolution technique we obtained a uniform approximation sequence of the generator $g$ and then constructed a sequence of solutions in $L^1$ for BSDEs. Finally, we proved the limitation of this sequence of solutions is the desired solution. This proved the existence. Reference | Related Articles | Metrics | Comments（0） Select Singular perturbation of BVP for third-order nonlinear VDE LIN Su-rong, NI Ming-Kang Journal of East China Normal University(Natural Sc    2012, 2012 (1): 138-150.   Abstract （2599）      PDF（pc） （354KB）（2142）       Knowledge map    Save The singularly perturbations for the vector boundary value problem of nonlinear third-order ordinary differential equations were studied. Under certain conditions, the given differential equation was transformed into a diagonalized system, and then the equivalent integral equations was solved. By using the method of succesive approximation and the theorem of fixed point, the existence of the solution of singular perturbation problem was proved and the asymptotic estimation was obtained. Finally, several examples of application were given. Reference | Related Articles | Metrics | Comments（0） Select Innovative e-Learning: information technology and standards, a current and future perspective B. E. PEOPLES Journal of East China Normal University(Natural Sc    2012, 2012 (2): 1-12.   Abstract （2332）      PDF（pc） （360KB）（2400）       Knowledge map    Save We are living in extraordinary times. Emerging Information Communication Technology (ICT) is ushering in a new age of a “shared knowledge society” on a global scale. But what does a “shared knowledge society” mean? How does the incorporation of emerging ICT allow our global society to evolve and in what ways? How can we describe the unique blend of technologies allowing this dynamic transformation? What ICT emerging components are important in allowing us to effectively communicate and learn on a global scale?  What standards are needed to support the implementation of these ICTs in allowing our global civilization to evolve into a “shared knowledge society”?  In this paper, we’ll explore how our global society is evolving e-Learning through the use of ICT, look at a few key current and emerging technologies involved, and related emerging standards. Reference | Related Articles | Metrics | Comments（0） Select Using industrial digital assets to build learning environments: a new approach to serious gaming B. BLANDIN Journal of East China Normal University(Natural Sc    2012, 2012 (2): 13-24.   Abstract （2368）      PDF（pc） （2086KB）（2195）       Knowledge map    Save In this paper, I present a vision of a new approach to develop serious gaming applications. This approach is currently supported by some French Higher Education and Training Institutions and by a major provider of Product Lifecycle Management solutions, simulation and CAD systems for industries. This paper will introduce the proposed concept, and present the questions raised by the development of the concept and the responses the consortium can provide so far. The conclusion opens discussions about potential developments or extension of this project. Reference | Related Articles | Metrics | Comments（0） Select Problematizing the way we do standards: focussing more on scope and rationale T. HOEL, J. MASON Journal of East China Normal University(Natural Sc    2012, 2012 (2): 25-34,41.   Abstract （2205）      PDF（pc） （372KB）（2414）       Knowledge map    Save This paper brings together two perspectives on current developments in information and communications technology (ICT) utilized for the purposes of learning, education, and training (LET). One perspective is concerned with governance and legitimacy issues regarding the process and relevance of standards development; the other, is concerned with the role of discerning relevant questions in LET and the potential scope for innovation that might develop tools to support such discernment. Discussion of information systems architecture is introduced as a means to set the context and provide a framework for bringing together an overall narrative and coherence to these two perspectives. Questions initiated by “why” are of particular interest because they typically demand an explanation in natural language to satisfy the questioner. By focusing on “why” as a key “primitive” of enquiry the authors present an approach that might inform improved processes of ICT for LET (a.k.a ITLET) standardization. Reference | Related Articles | Metrics | Comments（0） Select Inclusive learning:OER and cloud services Jutta TREVIRANUS, Erlend VERBY Journal of East China Normal University(Natural Sc    2012, 2012 (2): 35-41.   Abstract （2439）      PDF（pc） （256KB）（2140）       Knowledge map    Save For many years the promise of technology-enabled education has been the potential to adapt the learning experience to each individual learner. If an IT-enabled learning environment is aware of each learner’s learning preferences, the learning environment can potentially supply each learner with an individually optimized learning experience. The aggregation capabilities of cloud services, intelligent systems that transform, augment and replace resources with more suitable equivalents, combined with federated repositories of sharable, appropriately designed and labelled resources make this possible. However to achieve this we need a new take on how we view, produce and deliver educational learning resources. Reference | Related Articles | Metrics | Comments（0） Select Research on the standards for the Internet of Things in education FENG Xiang， JIANG Xin， WU Yong-he Journal of East China Normal University(Natural Sc    2012, 2012 (2): 42-51.   Abstract （3535）      PDF（pc） （799KB）（3990）       Knowledge map    Save This paper introduced the concept and history of the Internet of Things and analyzed its application in education and proposed research ideas. Based on the perspective of a typical three-tier, collection of the standards and key technology were summarized . Finally, combining the features and application mode in education, we summarized the metedata of intelligent educational terminals and established uniform standards. The results will be useful to educational service industries. Reference | Related Articles | Metrics | Comments（0） Select Using ArchiMate to design learning environment architectures W.G.KRAAN Journal of East China Normal University(Natural Sc    2012, 2012 (2): 52-69.   Abstract （2290）      PDF（pc） （2682KB）（2099）       Knowledge map    Save A desire to customise and personalise learning experiences, combined with the rise of a number of new tool integration technologies has led to a move away from monolithic Virtual Learning Environments (VLEs; a.k.a. Learning Management Systems, ‘LMSs’) towards more open and Distributed Learning Environments (DLEs). The various DLE architectures can have very different properties, however, and choosing between them can be difficult.The Open Group’s ArchiMate standard may help in that regard. It was designed to facilitate communication about architectures between all stakeholders in an organisation. It is a visual language that aims to help conversations about IT systems, business processes, organisational structure and strategy. This paper will present a number of DLE patterns that illustrate the range of possible architectures. Both the potential of these patterns as well as the utility of the ArchiMate language in explicating them will be evaluated. Reference | Related Articles | Metrics | Comments（0） Select Research on the framework of specification for e-Textbook and e-Schoolbag WU Yong-he， ZHU Zhi-ting， HE Chao Journal of East China Normal University(Natural Sc    2012, 2012 (2): 70-80.   Abstract （5556）      PDF（pc） （2795KB）（5342）       Knowledge map    Save With the development of information technology, the e-Textbook and e-Schoolbag is received more concerns from the community, its promotion and popularization is becoming the trend. First, this paper analyzes the demand of e-Textbook and e-Schoolbag from perspective of research on framework of standards. Then it describes the framework of e-Textbook and e-Schoolbag, including conceptual model, system framework model, hierarchy diagram for e-Textbook and e-Schoolbag system and function model. At last, it gives architecture of standards for e-Textbook and e-Schoolbag and profiles of related standards for e-Textbook and e-schoolbag. Reference | Related Articles | Metrics | Comments（0） Select Connecting reading and learning: design of the information model of e-Textbook GU Xiao-qing, FU Wei, QI Gui-chao Journal of East China Normal University(Natural Sc    2012, 2012 (2): 81-90.   Abstract （3594）      PDF（pc） （1053KB）（3090）       Knowledge map    Save With the development of personal digital terminal and the popularity of e-reading, “e-Schoolbag” has once again become a hot topic in the field of e-Learning. In this paper, we firstly analyze the demands of e-Textbook in the instrunction context, and then proposed the design of e-Text book information model which aims at connecting reading and learning, and hopefully to guide the design and developmentof e-Learningtextbooks. Reference | Related Articles | Metrics | Comments（0） Select Design of the  technical specification for e-Schoolbag terminal QIAN Dong-ming, GUAN Jue-qi, GUO Wei Journal of East China Normal University(Natural Sc    2012, 2012 (2): 91-98.   Abstract （4100）      PDF（pc） （832KB）（3916）       Knowledge map    Save With the development of information technology, e-Schoolbag has become a popular research and application field in digital education. Through the evolution of concept, the change of attention and the development of education, the paper gives a new understanding of e-Schoolbag and focuses on the design of the technical specification for e-Schoolbag terminal. On the basis of the research situation in domestic and international, it concerns for the usage of users, security of applications, reliability of terminal, universal design and builds technical specification for e-Schoolbag terminal from the three aspects of terminal hardware, operating system and instructional function. Finally, from the perspectives of manufacturer, related industry with e-Schoolbag and the reform of education, it gives the forecast of the significance of technical specification for e-Schoolbag terminal. Reference | Related Articles | Metrics | Comments（0） Select Research on the workflow standards for virtual experiment systems XUE Yao-feng, WU Yong-he, WU Di, JIANG Wen-bin Journal of East China Normal University(Natural Sc    2012, 2012 (2): 99-105.   Abstract （2212）      PDF（pc） （1246KB）（2448）       Knowledge map    Save This paper researches on the structure description problem of workflow of a virtual experiment system (VER). It also defines the information model and the interface standard of workflow of VER. The detailed work procedures and operation cases of VER are presented. It will give the valuable references for researchers and developers of VER. Reference | Related Articles | Metrics | Comments（0） Select On the research and implementation of the multi-domain virtual experiment standard framework WU Di, XU Jian, ZHANG Cheng-wei Journal of East China Normal University(Natural Sc    2012, 2012 (2): 106-114.   Abstract （2905）            Knowledge map    Save In this paper, a new multi-domain virtual experiment standard framework is introduced, which provides a general framework to support the standardization of virtual experiment teaching, learning and management. To make it possible for multi-domain application, the standard framework’s structure is designed based on multi-domain modeling concepts and general e-Learning standards. Reference | Related Articles | Metrics | Comments（0） Select Competences and skills for learning-outcome orientation: competence development, modelling, and standards for human resources development, education and training Christian M. STRACKE Journal of East China Normal University(Natural Sc    2012, 2012 (2): 115-130.   Abstract （2698）      PDF（pc） （1449KB）（2250）       Knowledge map    Save This paper will summarize the potential use cases and impacts of competences and skills in the new area, often called “Digital Age”: It will highlight the roles and benefits of standards and metadata for HR development and points out the special support that competence models can provide for the quality development in learning, education, and training. In this regard, the main characteristics of this innovative approach called competence modelling and its relevance in vocational education and training (VET) can only be summarized. A general competence model with a standardized competence structure and taxonomy of levels is introduced and discussed for the general application scenarios and for the specific use cases in vocational education and training. It can be shown that competence modelling and the presented competence model lead to an improvement of the working places, of the organizational and individual development, to an increase of the mobility worldwide as well as to a higher transparency and recognition of competences and skills. Finally leading European initiatives on competence modelling are introduced and the current standardization activities are highlighted. Reference | Related Articles | Metrics | Comments（0） Select E-Learning technology standard promotion activities in Japan Kiyoshi NAKABAYASHI Journal of East China Normal University(Natural Sc    2012, 2012 (2): 131-136.   Abstract （2335）      PDF（pc） （537KB）（2086）       Knowledge map    Save Open technology and open standards play important roles in the progress of e-Learning. Japanese e-Learning industry, being aware of this importance, has paid a lot of attention and made various efforts to disseminate open technology and open standards in e-Learning. Among these efforts, e-Learning Consortium Japan, a group of Japanese e-Learning providers and user institutes, has implemented and operated several programs to facilitate e-Learning technology standards promotion in terms of technical resource development and engineers’ skill development. This paper describes such programs including development of software modules for SCORM implementation and SCORM engineer certification program. Reference | Related Articles | Metrics | Comments（0） Select Application of ISO/IEC 19796 Standard in the Project of Teacher Education’s Innovation Platform ZHANG Yi, SHAN Li-ming, YANG Zong-kai Journal of East China Normal University(Natural Sc    2012, 2012 (2): 137-145.   Abstract （2358）            Knowledge map    Save Firstly, this paper introduced the project and the Reference Framework for the Description of Quality Approaches (RFDQ) which was proposed by ISO/IEC 19796 Standard. Secondly, it described the application and guidance of need analysis and framework analysis in the project. Lastly, in order to provide tuition-free normal college students and primary and secondary school teachers with excellent learning and teaching resources, it ensured innovation project′s construction quality from the standpoint of products, services and solutions. Reference | Related Articles | Metrics | Comments（0） Select Comparitive research on distance education quality management systems based on ISO 9001 and ISO/IEC 19796 Standards SU Xiao-bing, HE Bin Journal of East China Normal University(Natural Sc    2012, 2012 (2): 146-152.   Abstract （2315）            Knowledge map    Save This paper studied the relationship & difference about the ISO 9001 and ISO/IEC 19796 Standards, and compare the Reference Framework for the Description of Quality Management with Descriptive Model of Quality Approach. From the analyzation the article believes that ISO 9000 Standard pay more attention to macro-level organization and operation management, and ISO/IEC 19796 to micro-level design, development, and implement of educational products. Reference | Related Articles | Metrics | Comments（0） Select Least Q-eigenvalue of a graph HE Chang-xiang, ZHOU Min Journal of East China Normal University(Natural Sc    2012, 2012 (3): 1-5.   Abstract （2213）      PDF（pc） （250KB）（2498）       Knowledge map    Save We showed that: If $G$ is a non-bipartite connected graph, then $q(G)\geqslant \frac{1}{n(D+1)}$, where $g(G)$ is the least $Q$-eigenvalue of $G$, and $D$ is the diameter of $G$. Some relations between the least $Q$-eigenvalue of $G$ and that of its subgraph were given. Reference | Related Articles | Metrics | Comments（0） Select Toroidal embeddings of K7 ZHAO Wen-zhou, SHI Li-hua, WU Hao, REN Han Journal of East China Normal University(Natural Sc    2012, 2012 (3): 6-12,40.   Abstract （2224）      PDF（pc） （2280KB）（2593）       Knowledge map    Save In this paper, we showed that there are exactly $2\times5!$ embeddings of $K_7$ in the torus. All of such embeddings are triangular permitting $Gr\ddot{u}nbaum$ coloring. Reference | Related Articles | Metrics | Comments（0） Select Star edge coloring of $d$-dimensional grids DENG Kai, LIU Xin-sheng, TIAN Shuang-liang Journal of East China Normal University(Natural Sc    2012, 2012 (3): 13-16.   Abstract （2442）      PDF（pc） （243KB）（2655）       Knowledge map    Save The star chromatic index of graph $G$ is denoted by $\chi_{s}^{\prime}(G)$. In this paper, we studied the relationship between  $\chi_{s}^{\prime}(G)$, $|V(G)|=\nu$, and $|E(G)|=\varepsilon$, and proved that $\lceil\frac{8\varepsilon}{3\nu}\rceil\leqslant\chi_{s}^{\prime}(G)$ for $\Delta(G)\geqslant2$. The star chromatic index of 2-dimensional grid was obtained. We also got the attainable bounds for the star chromatic index of hypercubes and $d$-dimensional grids. Reference | Related Articles | Metrics | Comments（0） Select Oscillation criteria of a class of second-order dynamic equations on time scales YANG Jia-shan Journal of East China Normal University(Natural Sc    2012, 2012 (3): 17-23.   Abstract （2732）      PDF（pc） （267KB）（2269）       Knowledge map    Save The oscillation for a class of second-order nonlinear variable delay dynamic equations on time scales with nonlinear neutral term was discussed. Using the time scales theory and some necessary analytic techniques, and by introducing parameter function and the generalized Riccati transformation, some sufficient conditions for the oscillation of the equations were obtained. Some existing results in the literature are improved and extended. Reference | Related Articles | Metrics | Comments（0） Select Right-passage probabilities of $\emph{\textbf{SLE}}_{\bm {\kappa}}$ and critical percolation Journal of East China Normal University(Natural Sc    2012, 2012 (3): 24-29.   Abstract （2890）      PDF（pc） （544KB）（2546）       Knowledge map    Save This paper derived the probability formula for a chordal $SLE_{\kappa}$ trace across a given point in upper half plane $\mathbb{H}$. And on the basis of the left-passage probability, established the probability formula for a critical percolation in a closed unit circle without a given point. Finally, according to the relationship of exploration process and $SLE_{6}$, got that with the same starting and ending point, the trace of $SLE_{6}$ has the same distribution of self-avoiding walk. Reference | Related Articles | Metrics | Comments（0） Select Pricing extendible option under jump-fraction process PENG Bin, PENG Fei Journal of East China Normal University(Natural Sc    2012, 2012 (3): 30-40.   Abstract （2392）      PDF（pc） （238KB）（2781）       Knowledge map    Save A valuation framework for extendible options is constructed when the underlying asset obeys a fractional process with jump. Under the risk neutral environment, an analytic formula for the call option with one extendible maturity is derived by solving the expected present value of cashflow and conditioning jumps for the underlying asset. Moreover, some special cases of the formula are discussed. These results are generalized to the option with$ M $extendible maturity. Its value will converge in the limit to the value of perpetual extendible option as the number of extendible maturity increases to infinite. Extrapolated technique with two points is presented to yield a simple and efficient computation procedure to calculate the limit. Numerical results are provided to illustrate provided that our pricing expressions are easy to implement. Reference | Related Articles | Metrics | Comments（0） Select Weighted finite difference methods for two-sided space-time fractional diffusion equations MA Wei-yuan, LIU Hua Journal of East China Normal University(Natural Sc    2012, 2012 (3): 41-48,70.   Abstract （3539）      PDF（pc） （315KB）（3344）       Knowledge map    Save A weighted finite difference scheme was proposed in order to solve initial-boundary value problems of space-time fractional diffusion equations. Their stability was analyzed by means of discrete energy method. Using mathematical induction, we proved that the scheme was convergent under the same condition. Illustrative example was included to demonstrate the validity and applicability of the scheme. 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