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1.
研讨了J2ME和J2EE的技术特点与安全通信机制,分析了移动终端应用系统的体系结构、服务器端架构技术和优化设计.设计并实现了一个移动终端应用程序与Web服务端通信系统,该系统是一个典型的移动电子商务系统,具有良好的扩展性.  相似文献   

2.
设计了一套基于HL7 V3标准的双向转诊系统,系统结合了PHP、MySQL以及Web Service技术,实现了双向转诊系统的基本功能。通过运用一个标准的HL7引擎来进行HL7信息的构建及解析,系统的服务端和客户端之间的接口采用标准的Web Service接口,数据流采用HL7 V3标准的XML组织方式。因此,该系统的服务端可以提供给任何支持Web Service及HL7 V3标准的客户端调用,具有良好的可扩展性。  相似文献   

3.
为解决电动汽车充电难、充电桩分布不密集的问题,通过对第三方地图和LBS(Location Based Services)的充分利用,采用基于SOAP(Simple Object Access Protocol)协议的Web Service方法实现服务端与客户端的信息交互,开发了基于LBS的电动汽车充电服务系统Android客户端应用,实现实时定位、地址检索、充电桩信息显示、路径导航和预约充电等功能,方便用户对充电桩的查询和使用。  相似文献   

4.
介绍了一个自主开发的移动学习系统的设计和实现;该系统基于J2ME和Web senrices技术,其中J2ME用于手机端客户程序的开发,而Web Services技术则用于处理服务器端和客户端之间的交互;该系统能够配置在移动通信设备上,满足了随时随地的移动学习需要.  相似文献   

5.
在JavaScript语言重新受到重视的今天,其运行环境也正逐渐从传统的Web客户端向服务器端延伸。作为服务器端JavaScript引擎的典型代表,Rhino引擎具有广泛的平台支持和应用基础。通过将Rhino引擎置于一个标准的Java servlet中,便可构造出一个支持JavaScript的服务端脚本容器。借助Rhino引擎,Web开发者不仅能在脚本容器内部访问Java对象,而且还获得了整个Java平台的丰富类库及应用框架的支持。与此同时,服务器端JavaScript还统一了Web开发的前、后台语言,降低了开发难度并提高了开发效率。  相似文献   

6.
高建国 《科技信息》2011,(20):239-239,241
为了能让网络管理人员使用Web浏览器在网络节点上方便及时地观察网管系统所管理设备产生的告警信息,基于AJAX、J2EE技术设计了网管系统的告警实时显示Web模块。本文论述了告警Web模块的设计方案,给出了基于GWT框架的告警Web模块客户端和服务器端的实现结构。  相似文献   

7.
李侠 《科技信息》2010,(18):I0195-I0195
KJava开发平台和GPRS技术给无线通讯提出了新的解决方案,在支持KJava技术的Java手机上,开发移动设备数字图书馆系统。系统由两部分组成:手机客户端与服务器端,手机客户端完成无线传输和检索、图书与期刊资料浏览,服务端响应手机客户端完成相应功能,笔者基于KJava的手机软件浏览图书期刊资料,对现有数字图书馆信息化建设的补充和新的尝试。  相似文献   

8.
由于GIS中不但涉及属性数据,而且还涉及地理空间数据,因此数据量相对庞大,所以在设计和实现WebGIS时。必须考虑其性能问题.为了更高效地实现基于WebService的WebGIS的相关功能,有必要对其性能进行优化,这可通过增大Web Service颗粒度,不使用XML作为WebGIS系统内部的接口,压缩SOAP,通过异步访问服务器端Web Service中的Web方法,优化数据库,使用客户端和服务器端缓存等一系列优化措施来加快数据的访问速度,减轻网络传输负载,提高基于Web Service的WebGIS性能.  相似文献   

9.
孙继友  李会平  刘浩 《科技信息》2009,(24):I0208-I0209
文章以青岛开发区移动公交查询项目为背景,研究了基于J2ME移动公交查询系统开发平台架构及总体结构。分析了MIDP设备屏幕开发包,实现了客户端界面设计。研究了客户端网络连接方法,着重分析了客户端与服务器端基于HTTP协议通信的请求方法、头、正文的设置,使用线程实现网络连接,实现了客户端与服务器端的信息交互。研究了JDBC与数据库连接的方法。实现了基于公交拓扑的查询算法。本项目在实际应用中达到预期目标,实现了预期功能。  相似文献   

10.
该文为简化实验课人工排课和选课的繁杂性,基于移动Web技术设计和实现了实验课预约系统。移动浏览器端采用"触摸友好"的j Query Mobile框架,服务器端采用WAMP环境来开发,前端和Web服务端之间通过Ajax交互式地提交和响应数据。在移动智能终端普及的形势下,系统的构建使教师能够快捷地安排实验,学生可以随时随地预约实验,极大地提升了本科实验教学的管理水平。  相似文献   

11.
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.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
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.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
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。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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