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LBS provide users with highly personalised information accessible by means of a variety of mobile devices that are able to locate themselves. Nevertheless, the wide deployment of LBS can jeopardise the privacy of their users, so ensuring user privacy is paramount to the success of those services. This article focuses on finding a new safe and efficient scheme to prevent LBS server or other users in...
This paper reviews the research conducted in the Design Technology Research Centre in the School of Design of the Hong Kong Polytechnic University. Several major approaches to computational design are reviewed and analyzed. Based on the review and critical analysis of the results achieved so far, a more design oriented approach is proposed for the continuation of the research in this direction and...
Engineering training is an important part of engineering education in university. This paper introduces the functions and the construction of engineering training center, studies the relation between engineering training and high-qualified talents of petroleum machinery, presents some important ways to engineering training and comprehensive engineering practice as well as conducting teaching reform...
A hydraulic data center is an important infrastructure for in-depth development and utilization of hydraulic information and information share. Hydraulic database access middleware is capable of integrating various heterogeneous hydraulic data sources and providing efficient, transparent data access for users. Nowadays it has become a hot research topic to study data access middleware technology,...
Using ultra-high frequency (UHF) method, partial discharge (PD) signals are detected based on four typical physical models of defects in gas insulated substation (GIS). Unified and normalized Lorenz plots are created from three dimensional n-u- t maps of the sampled data. Corresponding mathematical models are established using a five-rank Gaussian functions, and the principles and methods of establishment...
There have been some researches of testing CLBs in SRAM-based FPGA in recently years. While no research in existing papers has focused on testing and locating multiple stuck-at faults in CLBs. We propose a testing approach for this multiple faults model and try to reduce the number of test configurations (TCs) and test vectors (TVs). It is certificated that in the proposed testing, the number of TCs...
Design tools that aim not only to analyse and evaluate, but also to generate and explore alternative design proposals are now under development. An evolutionary paradigm is presented as a basis for creating such tools. First, the evolutionary paradigm is shown to be the only successful design system on which this new phase of design tool could be based. Secondly, any characterisation of design as...
AbstractThe effects of arbuscular mycorrhizal fungi alkaline phosphatase (ALP) activities on the drought-resistance of Hippophaerhamnoides under water stress have been studied using histochemical techniques. The result shows in the mycorrhizae that total hyphae and functional hyphae form the base for the active hyphae, and amounts follow the order total hyphaefunctional hyphaeactive hyphae. Active...
Attempts were made to elucidate whether thyroid hormone upregulates renal proepidermal growth factor (pro-EGF) gene expression, biosynthesis and release in adult rats which were rendered hypothyroid. Predominantly pro-EGF was detected in renal cortex, whereas pro-EGF and its degraded species were found in urine. We demonstrated that T 3 increased pro-EGF levels in renal cortex to 2.2 ± 0...
Summary Using whole-cell patch-clamp technique, the effect of radiofrequency catheter ablation (RFCA) on calcium current (Ica) of guinea pig ventricular myocytes was examined. The radiofrequency energy delivered was 20 W× 10 s. RFCA decreased Ica apparently with the affected area reaching up to 1.2 cm from the ablation focus. In the meanwhile, the pathological lesion size resulted from RFCA was merely...
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