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排序方式: 共有75条查询结果,搜索用时 15 毫秒
1.
本文从注锁振荡器(IO)工作的物理过程入手,分析了其锁定过程中所完成的各种功能。并把这些功能模型化,建立等效模型框图。推导出闭环传递函数,揭示了其零阶环的实质,讨论了其独具的许多优异应用特性。 相似文献
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Bayesian MCMC Mapping of Quantitative Trait Loci in a Half-sib Design: a Graphical Model Perspective
N.A. Sheehan B. Gulbrandtsen M.S. Lund D.A. Sorensen 《Revue internationale de statistique》2002,70(2):241-267
Graphical models provide a powerful and flexible approach to the analysis of complex problems in genetics. While task-specific software may be extremely efficient for any particular analysis, it is often difficult to adapt to new computational challenges. By viewing these genetic applications in a more general framework, many problems can be handled by essentially the same software. This is advantageous in an area where fast methodological development is essential. Once a method has been fully developed and tested, problem-specific software may then be required. The aim of this paper is to illustrate the potential use of a graphical model approach to genetic analyses by taking a very simple and well-understood problem by way of example. 相似文献
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P. Riethmuller J. Chai D. Smith B. Hutabarat B. Sayaka Y. Yusdja 《Agricultural Economics》1999,20(1):51-56
The Indonesian dairy industry has been viewed by the Indonesian government as an industry that has the potential to improve the welfare of low income and landless farmers through providing them with an additional source of farm income. As well, the government sees the industry as a vehicle for providing opportunities for employment in rural areas. From an economy wide viewpoint, its development is viewed as a way Indonesia might save foreign exchange since a large share of its dairy requirements have to be imported. A variety of measures have been used to assist the industry. This paper investigates one of the measures, the BUSEP scheme or mixing ratio regulation which requires domestic processors to use Indonesian produced milk before imported milk. 相似文献
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<正> 社会王义市场经济的确立,使我国改革开放步入新的发展阶段。作为国家经济支柱的国有大中型企业,正从传统的管理体制中解放出来,以崭新的姿态融入国内经济大潮,迎接国际挑战。但大中型 相似文献
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本文提出了一种快速提取位同步的全数字锁相环方案。该方案通过对同步区、反相区以及快慢区的切换,有效地克服了同步时间与量化相位误差的矛盾。具有同步建立时间短、保持时间长、且同步精度高、抗干扰能力强等优点。 相似文献
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N. A. Sheehan 《Revue internationale de statistique》2000,68(1):83-110
Markov chain Monte Carlo methods are frequently used in the analyses of genetic data on pedigrees for the estimation of probabilities and likelihoods which cannot be calculated by existing exact methods. In the case of discrete data, the underlying Markov chain may be reducible and care must be taken to ensure that reliable estimates are obtained. Potential reducibility thus has implications for the analysis of the mixed inheritance model, for example, where genetic variation is assumed to be due to one single locus of large effect and many loci each with a small effect. Similarly, reducibility arises in the detection of quantitative trait loci from incomplete discrete marker data. This paper aims to describe the estimation problem in terms of simple discrete genetic models and the single-site Gibbs sampler. Reducibility of the Gibbs sampler is discussed and some current methods for circumventing the problem outlined. 相似文献
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本文阐述了用数字锁相的方法完成S波段频率源,分析了锁相环的频谱特性;并对输出信号进行了测试,其相位噪声指标£(10kHz)〈-93dBc/Hz,杂散抑制〈-65dBc,输出功率大于10mW。 相似文献