查询词典 sources

A new symbol-constrained joint source-channel decoding algorithm for VLCs is presented.By constructing double-tree VLCs sources,the propagation-error problem is evidently alleviated.Meanwhile,by applying symbol-constrained method to MAP algorithm,not only the a priori probability of VLCs sources is efficiently utilized,but also the Symbol Error Rate is reduced enormously.

提出了一种新的针对不等长编码信源的符号约束MAP联合译码算法，利用VLCs双树信源的构造方法，有效地抑制了VLCs的错误扩散；同时，通过将"符号约束"的思想应用于最大后验概率译码算法，不仅充分利用了信源先验信息，而且极大地降低了误符号率。

Error sources of velocity estimate have been changed since SA was off. Firstly influence quantities of all kinds of error sources of velocity determination were analyzed, the potential accuracy of GPS absolute velocity estimate was derived from both theory and field GPS data simulation.

首先从理论和实测数据模拟两方面分析了SA取消后各类误差源对GPS测速的影响，推导并计算了GPS单点测速可能达到的精度水平。

The author firstly combs the teachers sources of Shuyuan in Ming and Qing dynasties, points out that there are four main sources for it, and concludes that making full use of social resources is a valid path to solve the problem of teachers sources then.Secondly, the present research consults Shuyuan teachers employment way in Ming and Qing dynasties, combs its three ways and deeply inquires into the subjective and objective condition for them.Thirdly, the present research analyses Shuyuan teaching characteristics, management and promotion, sums up seven main teaching characteristics and analyses the advantage and disadvantage of them,Further more , the present research consults Shuyuan teachers management and promotion, makes an analysis on its historic courses why it"s informal.Finally, the present research analyses the Shuyuan teachers" economic treatment, social status and the influence and effect made to the politics, economy, military, social life and cultural education where they were situated in Ming and Qing dynasties, and concludes that the Shuyuan teachers in Ming and Qing dynasties actively participated in the local social activities in their peculiar upper class gentlemanship and greatly influenced and promoted the policy making and carrying out of the local public affairs, meanwhile, they promoted the communication and development of local learning and culture , and trained quite many men for profession for the locals.

作者首先对明清时期书院教师的来源进行了梳理，指出了明清书院教师的四种主要来源，认为充分利用社会资源是明清书院解决教师来源的有效途径；其次，对明清时期书院教师的聘用方式进行了历史考察，梳理出明清时期书院存在着三种教师聘用方式，深入探讨了这三种方式并存的主客观条件；再次，对明清时期书院教师的教学特点进行了分析，归纳出七个主要教学特点，并说明其利弊；此外，探讨了明清时期书院教师的管理及升迁问题，分析了其存在的不规范性的历史原因；最后，剖析了明清时期书院教师的经济待遇、社会地位及对书院所在地的政治、经济、军事及社会生活与文化教育所可能产生的作用与影响，得出明清书院教师以自己特有的上层绅士身份与地位积极地参与到当地社会生活之中，并在相当程度上影响与促进了地方公共事务的决策与实施；同时，他们促进了当地学术及文化的交流与发展，为当地培养出了大批的杰出人才。

Gas is the coal"s accompany sources, it belongs cannot regenerate lustration energy sources, so increasing gas"s take out effect, and increasing using rate of gas, that is important task to improve the produce safe status and empolder undefiled energy sources.

瓦斯是煤炭的伴生资源，同时又属于不可再生的洁净能源，因此，提高瓦斯抽集效果，增加瓦斯能源利用比率，是改善煤矿安全生产状况和开发绿色能源的重要课题。

The company owns 36 γ-ray sources (26 Ir192γ-ray sources and 10 Se75γ-ray sources), 27 300kV radiographic machines, 84 250kV radiographic machines, 43 200kV radiographic machines, 25 ultrasonic equipments, 4 NITON portable alloy analyzers for Positive Material Identification, 18 mobile dark rooms, 8 pipe crawlers and 29 units/sets of physical and chemical inspection equipments.

公司有γ源36枚（ Ir192源26枚， Se75源10枚），300KV 射线机27台，250KV 射线机84台，200KV 射线机43台，超声波探伤仪25台， NITON 光谱仪4台，活动暗室18个，管道爬行器8台，理化检验设备29台套。

Computer simulations validate the performance of these algorithms. And the model error of low order approximation distributed sources model, spatial frequency distributed sources model and Jocabi-Anger series expansion distributed sources model are discussed.

通过计算机仿真，验证了低阶近似分布源模型方位估计算法的性能，并且研究了分布源的低阶近似模型、空间频率模型和低阶Jacobi-Anger级数展开模型的模型误差。

Observing the extragalactic radio sources in both radio and optical wavebands is the important method to construct the relationship between radio and optical reference system. Since the precision of radio positions of radio sources is better than lmas, determination of optical positions of radio sources is the key step.

实现射电与光学参考系连接的一个重要手段是在两个波段观测河外射电源，由于射电源的射电定位精度已达亚毫角秒，因此河外射电源的精确光学定位是关键。

The influences of dioxins on human health and the situation of its emission in China are presented,and its pollutant sources are analyzed.It is pointed out that to resolve the dioxin pollution problems in China some work for instance the investigation of pollutant sources must be carried through;the inspective system made perfect;the pollutant sources treated through the circular economic method;the study of environmental iatrology s...

介绍了二噁英类物质对人体健康的影响以及我国二噁英类物质的排放情况，对二噁英的污染源进行了分析，指出要解决我国二噁英的污染问题应该立即开展对污染源的调查；完善监测系统；利用循环经济的原理从源头进行治理；加强对环境医学的研究；加强对二噁英类物质降解过程的基础研究。

Based on the pioneer research,various sources of writing errors have been classif into four kinds:interlingual sources,intralingual sources,limitation of basic language knowledge and writing skills and teachers ignorance of commenting on composition and correcting errors.

在借鉴前人研究的基础上，本论文作者将导致写作错误的原因归纳为：语际因素，语内因素，学习者语言知识、写作技巧的限制以及教师忽视对作文的评改。

It is according to this model that standard radiant sources, here called the blackbody sources of the first kind, are built up in practise. In this paper, the concept of blackbody sources of the second kind is presented for the first time.

在集总参数下建立了联系第一类和第二类黑体辐射源物理模型的理论公式，并在此基础上论证了第一类和第二类黑体辐射源之间一致的内在联系。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。