查询词典 initial data

There are two well-known shortcomings within K-Means algorithm prevailingly used in data clustering and other center-based clustering algorithms-the number of clusters must be known beforehand and the dependence of the algorithm performance on the initialization of the initial centers.

在聚类中广泛应用的K-Means算法及其它基于中心的聚类算法有两个共同的缺陷－需要预先确定类数目且随机初始化中心引起性能不稳定。

Upon initial signal assignment, about 20 chemical constituents in tea were identified, including amino acids, theanine, catechins (EGC, EC, EGCG, ECG and unknown catechins), sucrose, unknown sugars, fatty acids, caffeine, quinic acid and so on. The NMR data were then analyzed by the principal component analysis technique.

检测出约20种物质，包括多种氨基酸、茶氨酸、多种儿茶素表没食子儿茶素(EGC、表儿茶素、表没食子儿茶素没食子酸酯、表儿茶素没食子酸酯和一些未知的儿茶素、蔗糖、未知糖类、脂肪酸、咖啡因等。

The initial stress field of surrounding rocks of shaft is regressively analyzed by 3D finite element method according to in-situ measured data by hydro-fracturing and distribution properties of in-situ stress.

根据竖井围岩地应力场和Kirsch解得到的围岩二次应力场，结合Russenes和陶振宇岩爆判据，进行了竖井岩爆综合预测和分析，得出竖井有轻微和中等岩爆发生的结论，并提出岩爆防治措施。

By regression of experimental data, therules of the linkage between these factors, which will provide a theoretical basis for designing BBP with different scales.3 Using thermal analysis technology and dynamic thermogravimetry, the paper studies combustion kinetic characteristics of 3 types of agricultural crops at different rate of temperature rise, and thus, achieved dynamic parameters of these fuels at different rate of temperature, established dynamic model of straw combustion, which reflects the dynamic process in the fast combustion area.4 Characteristics of straw briquette combustion was experimented, focusing on the impact of straw type, temperature, air supply, and density, diameter, and weight of briquette on the combustion speed, and the following conclusions were drawn:(1) combustion of straw briquette fuel is static permeation diffusion combustion;(2) temperature has a larger impact on the speed of straw briquette combustion than air supply; the higher the combustion temperature is, the faster volatilizable component separates out, and the less steady the combustion is;(3) density of briquette fuel has impact on the speed of volatilizable component separation and therefore the combustion speed;(4) increase of diameter and weight of briquette fuel increases the average combustion speed in the initial stage, and that in the later stages is comparatively steady;(5) the proportion of volatilizable component in straw briquette fuel is high, therefore, the temperature control during combustion under the rational ventilation condition is essential to ensure its safe combustion.5 Using the above-mentioned results of experiments and theoretical analysis, and based on thought of hydraulic driven and bi-direction compression, the hydraulic system and compression parts of the HBP BBP are re-designed in terms of industrialization.

利用热分析技术，采用动态热重实验法，对我国的三大农作物秸秆在不同升温速率下的燃烧动力学特性进行了较系统的研究。得到了各原料在不同升温速率下的动力学参数；建立了秸秆燃烧的动力学模型，该模型反映了秸秆迅速燃烧区的动力学过程。 4 对秸秆成型燃料的燃烧特性进行了试验研究。着重研究了秸秆河南农业大学博士学位论文巫的种类、温度、空气供给量、成型燃料密度、直径、质量对成型燃料燃烧速度的影响并得出如下主要结论：①秸秆成型燃料的燃烧方式属于静态渗透式扩散燃烧。②秸秆成型燃料燃烧速度受温度的影响大于通风量燃烧速度的影响：燃烧温度越高，挥发分析出速度越快，燃烧平稳性愈差。③成型燃料密度影响成型燃料挥发分的析出速度，影响燃烧速度。④成型燃料直径和质量的增加，使得燃烧初期的平均燃烧速度增大，中后期的平均燃烧速度相对平稳。⑤秸秆成型燃料含挥发分比例高，因此合理配风下的控温燃烧是保证其完全燃烧的关键。 5运用已取得的试验和理论分析结果，以液压驱动、双向成型为基础，从产业化的角度对HBP型成型机进行了液压系统和成型部件的改进设计；同时采用了二级预压机构，使该成型机的生产率达到 500kg.hd；单位能耗 60kwh。上'左右，磨损件修复周期 300小时左右，基本解决了影响生物质固化技术在国内推广的技术难题。

Zaman said once initial reports from the collected data have been published, the project will receive more attention and have the potential to include hundreds of thousands of contributors.

Zaman说，一旦有一份从收集到的数据得出的草签报告出版，研究项目将得到更多的关注并且得到数以千百记的潜在贡献者。

Hochman, MD, from the New York University School of Medicine in New York City, and colleagues for the Should We Emergently Revascularize Occluded Coronaries for Cardiogenic Shock Investigators."Although survival in patients with cardiogenic shock complicating acute MI has been shown to be significantly higher at 1 year in those receiving early revascularization vs initial medical stabilization, data demonstrating long-term survival are lacking."

Hochman 医师和其同僚进行「阻塞之冠状动脉应否紧急执行血管再形成术以免发生心因性休克」研究，他指出，心因性休克依旧是急性心肌梗塞住院病患的主要致死原因，虽然心因性休克并发急性心肌梗塞之病患接受血管再形成术之一年存活率高於其他使用药物者，但是缺乏长期存活率之数据。

can be drawn by analyzing the experiment data:(1) With modeling indoor garbage column leaching test, the results indicated that the dynamic change of the pollution components of leachate display complex fluctuate attenuation; During the course of initial stages and middle stages, the garbage was decompounded quickly and gave out the quality concentration of pollutant maximally to the environments and the harm was also the most serious.

通过对试验数据进行整理分析，得出了如下结论：(1)通过室内垃圾柱淋滤模拟试验，结果表明淋滤液中污染组分的动态变化呈复杂的波动衰减；垃圾在填埋过程中，初期和中期降解速度很快，向环境中释放的污染物质量浓度最大，对环境造成的危害也最为严重。

By regressing the experimental data, the particle size and initial concentration are both involved in the kinetics model. Results of prediction of the experiments indicated that it has a good prediction power.

首次将反应物的始浓度和催化剂粒径同时引入了动力学模型方程式，利用该模型进行预测的结果表明，该模型具有良好的预测能力。

All other devices in between simply repeat data being sent between the two controlling devices.Once the initial device relinquishes control of the loop, other devices can gain access.

这两个设备之间的其它所有设备只是中继正在传送的数据，一旦第一个设备放弃对环的控制，其它设备就能进行访问。

In order to solve initial alignment of antenna for laser communication system between an aircraft and a ground station,the composition and algorithm theory of an antenna alignment system were demonstrated in detail,and the experimental data were analyzed.

提出了对飞机-地面间激光通信系统天线视轴进行初始对准的方法。论证了系统的硬件组成和算法原理，对实验数据进行了分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。