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1.
传统的电子商务应用系统不适应企业业务不断扩展,流程不断变化,存付数据分布处理的要求,这里在应用系统多层架构的基础上,结合分布式组件技术,提出了基于组件的B2C分布式电子商务应用系统框架,给出了系统的逻辑架构,物理架构和设计方法,该系统框架具有较好的可扩展性,可重用性,开放性和兼容性。  相似文献   

2.
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   

3.
研究面向SOA技术在网络设备管理系统中的应用,并给出一个基于SSH的J2EE开发框架,探讨此框架的设计策略及其兼容性能,实现业务代码的分离以及程序逻辑组件间的解耦,提高了系统的可维护性、可移植性和可重用性.通过此框架设计开发了网络设备管理系统,系统具有权限控制、弱电间设备管理、IP管理、VLAN管理、网络接口用户管理等功能.实际应用表明,系统运行良好,大大提高了高校中网络设备的管理效率,并为类似应用系统的构建与开发提供了可以参考的解决方案.  相似文献   

4.
为进一步改善宁夏气象数据服务水平、规范CIMISS用户数据接口,提升CIMISS基础数据库检索效率,采用VC++和CIMISS API技术设计实现了宁夏气象数据查询系统;系统为授权用户提供从CIMISS基础库中的数据查询、图形展示、导出等功能;系统已经投入到业务使用中,应用结果表明系统对开展气候分析、天气预报、气象资料科研提供有力支撑。  相似文献   

5.
为进一步改善宁夏气象数据服务水平、规范CIMISS用户数据接口,提升CIMISS基础数据库检索效率,采用VC++和CIMISS API技术设计实现了宁夏气象数据查询系统;系统为授权用户提供从CIMISS基础库中的数据查询、图形展示、导出等功能;系统已经投入到业务使用中,应用结果表明系统对开展气候分析、天气预报、气象资料科研提供有力支撑。  相似文献   

6.
随着科学技术的不断发展,计算机软件技术在各个领域开始不断渗透,气象业务中也开始广泛利用计算机软件技术,以提高气象业务的现代化水平。不断更新气象业务计算机软件技术,可以为气象业务提供优质的服务,推动我国气象行业可持续发展。该文首先分析了计算机软件技术在气象业务中的重要性,并且提出气象业务中计算机软件技术的应用措施,可以对于实际工作起到参考作用,创新气象业务的工作形式,为人们提供精准性的气象信息,降低恶劣天气的负面影响。  相似文献   

7.
随着社会的不断进步,虚拟化技术的不断成熟,目前虚拟化已逐渐应用在各行各业中,同时随着民用航空业的突飞猛进,空管气象业务的持续增加,针对不同的业务、不同的系统、不同平台、不同硬件、不同配置对空管气象人员提出更高的要求。借助虚拟化技术可在业务系统保障、人员培训、运营成本等方面进行优化改进,从而提供空管气象的服务质量,增强空管气象业务的保障能力。该文阐述了虚拟化技术的特点,并详细说明了虚拟化技术在空管气象的应用及优点。  相似文献   

8.
海洋气象服务是推进海洋经济发展的重要技术保障,研发专业定制化海洋气象服务系统及产品,更有利于海洋经济持续发展。本文基于面向服务架构,设计“近海船舶交通气象服务系统”,对面向服务架构在多源异构业务数据集成应用方面进行深入研究。系统在青岛近海船舶交通气象服务中的应用,有效减少了气象灾害对近海船只通航造成的危害,为青岛近海船舶交通气象服务提供了有力保障。  相似文献   

9.
公共气象服务效益评估业务系统的设计   总被引:1,自引:0,他引:1  
王军  庄俨 《科技信息》2010,(24):240-240,242
随着经济的快速发展,气象服务的需求也变的多样化。为了使公众更好地及时获得准确且符合工作与生活需要的气象信息,提高气象服务水平和效益,本文对照我国气象部门的层次结构,设立了多级别的分组用户权限管理框架,通过理论分析和相应的数学模型推算,为用户设计了一个低成本,高效率,功能丰富,层次严谨,面向整个气象系统的公众气象服务调查效益评估业务系统。  相似文献   

10.
设备运行监控业务是气象观测站正常运行的有力保障,随着现代技术的发展,针对不同业务场景的设备监控系统不断涌现。围绕基层台站的气象观测站业务场景,从软件工程的角度出发,深入讨论了气象观测设备的监控方法,解决了监控数据同步、数据质量分析、逻辑检查等若干关键问题,并通过对系统的结构设计、核心流程的研究,列示了监控软件系统在气象设备运行监控业务中的应用实例,为气象设备运行监控业务的发展提供了有利的参考。  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.
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   

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 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   

15.
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   

16.
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.  相似文献   

17.
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   

18.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

19.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

20.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

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