基于云的高校移动校园生态链的构建研究

移动校园是一种基于传统互联网和移动互联网技术,以智能手机、平板电脑等移动设备为信息载体,为学习者营造情景交互式的学习范围,实现在学习环境、学习资源和学习活动上均以学习者为中心的虚拟校园,并以此为平台,承载了办公、科研、生活服务等移动应用.本文结合黑龙江大学移动校园的建设案例,针对校园特征与互联网模式的移动校园进行分析,定位了移动校园的功能及用户需求,提出了"应用驱动,开放共赢"的建设理念,并描绘出移动校园的生态链模式.     

移动互联时代高校数字化校园的构建

随着互联网与移动通讯技术的迅速发展,高校数学化校园呈现出与移动终端结合的趋势.如何规划、构建移动互联时代的数字化校园便成了高校信息化发展不可缺的课题.论文从三个层面探讨移动数字化校园构建设计的方法.同时探讨了数字化校园移动终端应用的数据接入流程,在高校信息化发展方面有一定程度的创新,也会给各行各业在构建数字系统提供了启示.     

基于微信公众平台的校园信息化系统设计

近年来,随着移动互联网技术的迅速发展,智能移动终端在高校师生中迅速普及.使用智能移动终端访问校园信息化系统时遇到了一些新问题.如:页面乱码,页面格式混乱;无法访问现有的教务系统,数字化校园系统等问题.笔者提出了一套基于微信公众平台的校园信息系统建设方案,通过将微信公众平台与校园信息化系统进行对接,解决了移动互联网时代校园信息化系统遇到的新问题.     

基于AOC的校园无线低速移动模型

根据校园移动节点的行为方式拓展校园无线移动模型特点,提出一种基于AOC的校园无线低速移动模型.通过NS-2仿真平台进行仿真实验,结果表明,数据包传递率方面DSR协议表现相对稳定.     

智慧校园移动应用架构分析

介绍了"智慧校园"的相关背景及理论,通过对智慧校园在移动应用中实现的特点分析,提出了智慧校园移动应用架构,并对架构中的架构载体、信息热点等关键技术进行了具体的分析,给出了智慧校园移动应用架构方案。     

基于OSGi和RESTful技术的移动校园数据中间件的设计

在分析数字化校园应用的基础上,提出了基于OSGi和RESTful Web Services构建移动数字化校园数据中间件系统来获取现有的校园系统信息的方法,阐述了数据中间件的构架和设计.该系统采用Equinox服务框架和RESTful技术,智能采集校园系统信息并优化,同时考虑了后期的数据分析及应用扩展的问题.试验结果证明该数据中间件能很好地向移动应用提供数据支持,并且具有很好的用户体验感.     

高校新一代移动信息门户的建设

移动互联网渗透到人们生活、学习和工作的各个领域,高校的专属APP也受到了广大师生的热烈追捧.但是很多校园移动应用仅仅是实现了当前应用系统的移动化,满足信息获取的便捷性,却往往忽视了师生用户在信息交互和个性化信息获取等方面的需求.所以需要构建一个开放的移动公共服务平台体系为师生的信息服务提供可控的移动化支撑,并提供一个集中式的校园移动服务分发通道;为满足面向个性化移动信息建设需求,通过开放的接口降低开发门槛融入更多的平台应用开发者;利用移动互联的优势为广大师生提供统一、权威、快捷和易用的信息移动化服务.     

基于HTML5的移动校园资讯平台的应用研究

移动终端技术以及智能手机应用的飞速发展给各行各业的工作提供了便利。围绕高校师生生活和学习服务需求,基于HTML5的移动网站架构系统具有良好的跨平台性,适用于当前主流的各种手机操作系统。项目应用于枣庄学院校园内,为师生学习生活提供了一个集个性化新闻资讯、信息推送、应用无缝集成的移动校园资讯服务平台。     

基于Supermap技术的数字化校园APP设计研究——以吉林师范大学为例

伴随着地理信息系统和智能移动终端的发展,传统的数字化校园已经落后于发展潮流,在移动终端迅速发展的今天,数字化校园APP的必要性显而易见.基于Android平台的Super Map i Mobile for Android组件开发的"掌上吉师"数字化校园APP,改善了现有的数字化校园,使其适应当今的发展潮流,具有一定的实践价值.     

移动互联网环境下校园信息需求的现状和发展趋势研究——基于大学生手机用户校园信息需求的调查分析

随着移动网络技术的迅猛发展及普及,移动互联网已经成为获取校园信息的主要渠道之一,而手机网络逐渐成为一种新的移动互联网信息传播媒介和交互的端口,给高校大学生的专业学习、校园生活和社交活动等带来深刻的影响。以大学生手机用户为研究对象,通过以问卷调查为主、以访谈和小组座谈为辅的方式对校园信息需求的现状(获取渠道、需求内容等)进行了深度调研,在弄清当下大学生手机用户对校园信息需求主要目的的基础上,分析了适应移动互联网环境的校园信息获取渠道和校园信息网站内容,归纳出大学生手机用户对校园信息需求的便捷性、功能性、共享性和社交性等新特点,并提出校园信息需求必将走向校园"移动学习"的信息需求时代。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with