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T. Raghava Rao D. N. Rao B. Veerendra Kumar P. Aparanji K. Srinivas Rao R. Athota 《Indian journal of clinical biochemistry : IJCB》2003,18(1):29-34
Sensitization to ingested foods is a known fact and several food allergens have been characterized. It has been observed in
our survey that the people complained of allergic symptoms after consumption of the vegetableVigna sinensis. In this study, the experiments were carried to investigate the IgE antibody response against the green seed extract of vigna
sinensis in mice and found that the primary, secondary and tertiary immunization with or without adjuvant by different doses
induced a significant production of IgE antibodies. The presence of IgE antibodies in the mice sera were determined by passive
cutaneous anaphylaxis and enzyme linked immunosorbent assay. It was also confirmed that these allergens were found to be heat
resistant and shared a common epitope(s) with the other legume foods, as evidenced by the cross-reactive studies. 相似文献
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独立成分分析法（ICA）是近几年发展起来的一种新的信号分离方法。本文介绍了ICA的定义、基本原理及几种主要算法及其相互关系，并进一步讨论了ICA在各个领域的应用。 相似文献
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The authors present their analysis of the differential equation dX(t)/dt=AX(t)-XT(t)BX(t)X(t), where A is an unsymmetrical real matrix, B is a positive definite symmetric real matrix, X∈Rn; showing that the equation characterizes a class of continuous type full-feedback artificial neural network; We give the analytic expression of the solution; discuss its asymptotic behavior; and finally present the result showing that, in almost all cases, one and only one of following cases is true. 1. For any initial value X0∈Rn, the solution approximates asymptotically to zero vector. In this case, the real part of each eigenvalue of A is non-positive. 2. For any initial value X0 outside a proper subspace of Rn, the solution approximates asymptotically to a nontrivial constant vector (X0). In this case, the eigenvalue of A with maximal real part is the positive number λ=‖(X0)‖2B and (X0) is the corresponding eigenvector. 3. For any initial value X0 outside a proper subspace of Rn, the solution approximates asymptotically to a non-constant periodic function (X0,t). Then the eigenvalues of A with maximal real part is a pair of conjugate complex numbers which can be computed. 相似文献
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提出了一种利用控制器局域网(CAN)驱动器PCA82C250扩展通用异步收发器(UART)的方法,与原有RS232、RS422和RS485标准相比,在保持全双工通信模式的同时,具有传输距离远、通信速率高和组网节点多的优点,而且,无需CAN控制器即可使用,可以简化电路,降低成本。 相似文献
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近年来,生物特征识别技术得到了快速的发展,人脸检测技术也在不断进步.与其他人体生物特征识别系统相比,人脸识别更加直接和便利化,因而容易为用户所接受,并且其在身份验证、公安刑侦、智能视频监控、智能人机交互系统等方面都有着广泛的应用. 相似文献
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管理咨询公司信息化咨询服务能力的评价模型——基于上海市30家管理咨询公司实证研究 总被引：1，自引：0，他引：1
认为管理咨询公司的竞争力大小取决于其所能提供的服务质量。从从业经验、市场竞争力、信誉与服务能力4方面调查并获得上海市30家管理咨询公司的基础数据,运用主成分分析法对其进行评价,以便为信息化建设实施企业提供参考。 相似文献
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We aimed to evaluate the internal consistency and factor structure of the Functional Movement Screen (FMSTM) in youth athletes and quantify differences between individual task score at different stages of maturation. FMSTM and anthropometric variables were measured in 144 youth athletes (96 female, 48 male). Biological maturation was categorised as before- (<-0.5 years), at- (?0.49–0.50 years) and after- peak height velocity [PHV] (>0.51 years). Internal consistency was poor (Cronbach’s alpha; 0.53, ±90% confidence limit 0.10; ordinal alpha 0.6, ±0.09). Principle component analysis extracted two components, representing 47% of the total variance. Tasks loading highest on component 1 required stability, while those loading highest on component 2 favoured mobility. “Likely” decrements in component 1 tasks were observed before-PHV. In-line lunge (effect size ±90% confidence limit; ?0.47, ±0.49), hurdle step (?0.38, ±0.49), and trunk stability push-up (?0.51, ±0.45), were lower compared with athletes at-PHV and rotatory stability (?0.44, ±0.37) was lower than those after-PHV. Boys’ scored “most likely”, higher (0.73, ±0.28) in trunk stability push-up, and girls “likely” higher in shoulder mobility (0.46, ±0.29). In our population, the FMSTM is not uni-dimensional, thus total score should be avoided. Clear maturation affects were observed in stability tasks. 相似文献
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The eigenface method that uses principal component analysis （PCA） has been the standard and popular method used in face recognition. This paper presents a PCA - memetic algorithm （PCA-MA） approach for feature selection. PCA has been extended by MAs where the former was used for feature extraction/dimensionality reduction and the latter exploited for feature selection. Simulations were performed over ORL and YaleB face databases using Euclidean norm as the classifier. It was found that as far as the recognition rate is concerned, PCA-MA completely outperforms the eigenface method. We compared the performance of PCA extended with genetic algorithm （PCA-GA） with our proposed PCA-MA method. The results also clearly established the supremacy of the PCA-MA method over the PCA-GA method. We further extended linear discriminant analysis （LDA） and kernel principal component analysis （KPCA） approaches with the MA and observed significant improvement in recognition rate with fewer features. This paper also compares the performance of PCA-MA, LDA-MA and KPCA-MA approaches. 相似文献