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基于Web应用的三层结构模式,采用JSP技术架构了系统应用软件。以系统开发为例,利用UML建模,通过用例驱动的方法设计和建立了机电产品电子商务平台的模型;同时分析了数据库访问中存在的问题,并实现了连接缓存和连接池对数据库的高效访问;最后对机电产品电子商务平台的原型系统进行了开发和实现。 相似文献
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As one of the basic narratives of culture, traditional residential architecture is an important value, indicating its relationship with its environment. Due to this, the continuity of culture in rural areas is closely related with the sustainability of traditional residential architecture. Cyprus is a Mediterranean island, which has managed to sustain her rich cultural heritage against the many economical, socio-cultural and political changes she has gone through. There is a need for new dwellings in rural areas and this demand is increasing rapidly. In these areas which are physical environments where sustainability can be maintained easily, the Social Housing Department of the North Cyprus Government has made several studies for the proposal of prototype house plans’ as a solution to the above mentioned problem of a need for housing and the prevention of migration to cities. However, upon analysing the architecture of traditional dwellings; and the life-styles of the people who live in these rural areas, it has been observed that these projects, with incomprehensible, strict and totalitarian design principles, are incompatible with local culture and conditions. It is suggested that there is a need for an appropriate environment for the continuation of the life-style that is natural to the people that live within them. On the contrary, these projects form the basis of a step towards a monotonous settlement development which does not respect either the values of traditional architecture or local identities. It is extremely important that the correct steps are taken for both the conservation of the existing physical environment and for handling the issues of new settlement developments in relation to production relationships and cultural sustainability. The main aim of this paper is to draw attention to the traditional design principles that can be re-interpreted in the proposed ‘prototyped dwellings’ in North Cyprus. In order to achieve this aim, a case study, based on observations, literature survey and site survey techniques has been carried out. 相似文献
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从文化心理行为模式的角度对黎族民居空间及造型形成过程进行了探讨。认为人类在塑造自己生存立足的场所时一直伴随着对意义的追求,人赋予建筑的表征意义在很大程度上决定了建筑空间及造型的可识别性特性,构成了场所感,成为特定地域、特定场所的一种文化“原型”识别性标志。 相似文献
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快速金属模具的陶瓷型铸造工艺 总被引:7,自引:3,他引:4
快速金属模具制造是一种新的模具制造技术。为获得高质量的陶瓷型精密铸造金属模具,着重从硅酸乙酯水解液的制取、耐火材料粒度级配、陶瓷浆料制作、催化剂选择、喷烧工艺和焙烧工艺等几方面进行系统研究,得出一整套将分层实体制造LOM原型应用于生产高质量的陶瓷型精密铸造金属模具的工艺,经实际生产验证,取得良好的效果。 相似文献
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“写仿”是清代皇家园林中常用的创作手法,明代赵宧光的寒山别业是乾隆帝在皇家园林中最为重要的写仿对象之一,在乾隆朝分为寒山别墅、千尺雪、法螺寺三景。其中寒山别墅是圆明园紫碧山房写仿原型。本文通过文献分析、现场踏勘、专家走访等方法对乾隆南巡期改建的寒山别墅进行深入探讨,通过历史文献梳理证实乾隆二十年改建的寒山别墅是紫碧山房写仿的原型;通过辨析现存四张《寒山别墅》图布局、景点情况,结合其他历史文献与现场踏勘 GPS 布点推断其整体布局并复原乾隆南巡时期寒山别墅平面布局图。研究成果有助于深入了解乾隆南巡时期寒山别墅情况,为进一步研究紫碧山房写仿情况提供了基础材料。 相似文献
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R. R. Stone R. A. Jong T. J. Orzechowski E. T. Scharlemann A. L. Throop B. Kulke K. I. Thomassen B. W. Stallard 《Journal of Fusion Energy》1990,9(1):77-101
This paper describes designs for 280-GHz and 560-GHz microwave sources based on free electron lasers (FELs). These 10-MW units are based on technology developed over the last 5 years. A first demonstration of high-average-power microwave production with an FEL system is expected in the Microwave Tokamak Experiment (MTX) facility. This paper gives details on the design and construction of that 250-GHz, 2-MW system and discusses specific applications for the Compact Ignition Tokamak (CIT). 相似文献
70.
Prototype testing and analysis of a novel internal combustion linear generator integrated power system 总被引:1,自引:0,他引:1
A novel four-stroke free-piston engine equipped with a linear electric generator (namely internal combustion linear generator integrated power system) is proposed in this paper to achieve efficient energy conversion from fuel to electricity. Unique features of the novel power system are presented and their effects on the continuous running are discussed, along with potential advantages and disadvantages compared to conventional engines. A single cylinder, gasoline and spark ignition prototype is fabricated with reference to the geometric and control parameters of an existing conventional four-stroke engine. Stable running of the prototype is realized, and a 2.2 kW average output power with the generating efficiency of 32% has been obtained up to now. The feasibility and performance of the proposed design are verified. Detailed testing results from the continuous running prototype are analyzed in this paper for giving insight into the performance and dynamic behaviors of the novel power system. 相似文献