查询词典 theoretical research

The academic significance and the applied value of research into Yi structural auxiliary words include the following: 1. The structural auxiliary words play an important role in Yi grammar. Many problems in Yi syntax could be solved if the special features of Yi structural auxiliary words were understood. 2. The study of Yi structural auxiliary words may provide a foundation for a theoretical framework of function words and clarify the rules for the development of Tibeto-Burman languages. 3. The study of Yi structural auxiliary words may help in the study of Chinese grammatical history. It can supply some useful clues in the study of Chinese structural auxiliary words and the historical evolution of Chinese grammar.

彝语结构助词研究的学术意义和应用价值在于：1、结构助词在彝语语法中占有重要的地位，认清了彝语的结构助词特点也就解决了彝语句法的大部分问题。2、彝语结构助词的研究有助于建立藏缅语族语言虚词理论框架，弄清藏缅语族语法手段的发展规律。3、彝语结构助词的研究有助于汉语史的研究，可以对汉语结构助词和汉语语法历史演变的研究提供许多有用的线索。4、彝语结构助词的研究还会对彝语文的规范和教学、双语教育、翻译出版等起到有益的作用，具有实际应用的价值。

On the basis of theoretical analysis, the city of Beijing is chosen to be observed to analyze demand-supply of taxicabs in large cities, and the research data turn out to support the theory.

在分时段出租车供需关系模型基础上，本文将理论研究与实地调研相结合分析了高峰时期出租车交通需求的特点、社会车辆需求对出租车交通需求的影响和管制变量对出租车交通需求的影响等问题。

Its precision is one of the key performance measure of the whole system, so the research work of laser gyroscope North-seeking system model building and parameter recognition is of much theoretical and engineering significance.

激光陀螺寻北系统的寻北精度是整个系统的核心性能指标之一，因此开展激光陀螺寻北系统建模与参数辨识工作具有重要的理论意义和工程价值。

This dissertation describes theoretical and experimental research on steady-state photorefractive spatial solitons.

表明在小的微扰下这类孤子是稳定的。

Cultural turn of scientific philosophy provides a theoretical basis for all scientific research. The cultural turn of literary study smoothens the way of cultural turn in the study of literary translation.

科学哲学研究的文化转向为一切科学研究的文化转向奠定了理论基础，文学研究的文化转向为文学翻译研究的文化转向提供了方向。

So, it is of greatly theoretical and practical significance to research the ore-forming fluid and summarize the role of mineralization in the region.

对该区成矿流体的系统研究，总结成矿规律不仅具有理论意义，而且对指导找矿具实际价值。

The Russian economy Transition has deeply influence to Russias economical growth and development, it has Important theoretical value and Practical Significance to research its Actual results and Dynamic Change.

俄罗斯经济的转轨对俄的经济增长和发展都有深远的影响，对其转轨的实际效果和动态变化进行研究具有重要的理论价值和现实意义，它的经验教训对同处于由计划经济向市场经济转轨时期的国家也具有重大的借鉴意义。

It is a meaningful research aspect to pay attention to the cognitive load of the students during the process of using technology to facilitate learning. As a theoretical construction, the Cognitive Load Theory will be used to guide instructional design. Even though, the animation design still has some drawbacks, and needs further improvement.

在运用技术促进学习的过程中关注学习者的认知负荷是一个有意义的研究方向，认知负荷理论作为一种理论建构可以用于教学设计的原则，本研究以三维教学动画设计为载体进行尝试，动画设计仍有不完善的地方，需要加以改进。

In the present studies, the laser flash photolysis and the pulse radiolysis techniques have been first introduced into occupational medicine field of free radical research, and the biophysical chemistry techniques have been used to supply the theoretical basis of oxidative-antioxidative defense system disorders caused by 〓 on molecule level.

本研究首次在自由基职业医学领域引进激光光解和脉冲幅解研究技术，应用生物物理化学研究手段为〓致机体抗氧化防御体系平衡紊乱机理提供了分子水平的理论依据。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。