A Study of Aviation Weapon Equipment Maintenance Based on the Semi-Markov Model

Based on the Semi-Markov mathematical description, the multiple states of maintenance processes for aviation weapon equipment are studied. Six kinds of maintenance states are determined and the Semi-Markov model of the maintenance process is given. According to maintenance characteristic, the multiple states maintenance processes are divided into the wait, use and alternate stages. Through using the mathematical model for the different stages, the probability in different states and effective index on different stages are obtained. These results are available to the maintenance practice.

Research on Fault Prediction of Modern Aviation Electronic Equipment Based on Improved Grey Model

The basic principle and method of Grey Model prediction are presented. In view of the defects of general GM(1,1) model, an improved method is proposed. That is using the particle swarm optimization algorithm to obtain the best forecast dimension and using metabolism to make the model parameters adaptively change. Finally, the improved Grey Model is used to predict the fault of high voltage power supply circuit of a certain type of modern air-borne radar. The results which are computed and simulated by Matlab software show that the forecast precision of improved Grey Model is higher than that of original Grey Model.

China Aviation Equipment Corporation

Founded in 1980, the China Aviation Equipment Corporation is a national industry and trade import and export company under the jurisdiction of the Civil Aviation Administration of China. Its main business includes the import and export of civil aircraft, engines, air-borne equipment and various craft parts and components, all kinds of aviation-related non-ferrous and ferrous metals, chemicals and light industry products.

基于C/S架构和物联网技术的可移动医疗设备共享调配系统的设计与应用

目的 设计一个可移动医疗设备高效管理与临床科室共享调配相结合的医疗设备共享管理平台,实现可移动医疗设备使用的全过程管理。方法 基于C/S架构,利用物联网技术优化整合现有医疗设备大数据资源,结合医院需求,构建可移动医疗设备共享调配系统,实现医疗设备共享管理、预约借用、统计分析等核心功能。通过比较系统上线前后呼吸机调配次数、平均调配时间、呼吸机使用率、单台呼吸机日均收入4个指标,分析系统应用效果。结果 系统上线后,呼吸机调配次数明显增加、平均调配时间明显降低,呼吸机使用率、单台呼吸机日均收入明显升高,且差异均有统计学意义(P﹤0.05),表明系统对提高呼吸机调配效率与使用效率有促进作用。结论 可移动医疗设备共享调配系统优化了医院设备管理流程,实现了医疗资源的统一调配,有效满足临床紧急抢救时医疗设备调配使用的相关需求,提高了医疗设备周转率以及设备管理人员的工作效率,有助于医院节约人员成本、降低采购费用,为医院管理者制定相关决策提供数据支撑。

China's Aviation Market

In the excellent situation of reform, opening to the outside world, development and stability, the China civil aviation transport industry, which plays a leading role in the development of the national economy, is developing steadily. Its speed of development ranks first in the world and is the focus of world attention. In 1994, China’s total air freight turnover reached 5.84 billion tons/km, an increase of 14 times compared with that of 1980,

ZTE Named“World's Best CDMA Equipment Manufacturer 2009”

ZTE Corporation announced on November 6, 2009 that the company has received the prestigious "World’s Best CDMA Equipment Manufacturer 2009" award from research and consulting firm Frost & Sullivan.

CHINA'S INTERNATIONAL AVIATION CORP.

Long ago,a group of Beijing opera artistsperformed the Red Phoenix mythicaldancing,conquering audiences in theUnited States.Now the Red Phoenix designis used by the China International AviationCorporation(CIAC) as its registered mark,indicating that all its airplanes fly in safety,bringing happiness and success for all thepassengers everywhere in the world. In the world today,the airplane hasbecome indispensable.Safety,reliability,comfort and convenience are the major pointsthat concern passengers,and also a key

Development Strategy of China's Civil Aviation Industry

The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech industries in the industrialized world, and civil aircraft are the industry’s basic products, which are value-added, andpromote the production of their

ZTE Launches World's First Symmetrical 10G EPON Equipment Prototype

ZTE Corporation, a leading global provider of telecommunications equipment and network solutions, launched a prototype of the world’s first symmetrical 10G EPON equipment at the China FTTH Summit 2009, as well as

China's Medical Equipment and Instruments Industry

Great changes have taken place in China’s medical equipment and instruments industry since the launch of the reform. The industry has evolved a new structure consisting of various economic sectors.

基于cSVB算法的DME脉冲干扰抑制方法

针对测距仪(distance measure equipment,DME)信号严重干扰L频段数字航空通信系统(L-band digital aviation communication system,L-DACS)前向链路接收机的问题,提出基于相关稀疏变分贝叶斯(correlated sparse variational Bayesian,cSVB)算法的DME脉冲干扰抑制方法。所提方法利用L-DACS系统正交频分复用(orthogonal frequency division multiplexing,OFDM)接收机的空子载波信息构建接收信号的压缩感知方程;然后,根据cSVB算法进行三层次贝叶斯信号建模,最后选择了两种变体算法重构DME干扰信号,并将其从时域接收信号中去除。理论分析与仿真结果表明,所提出的干扰抑制方法可以充分利用信号先验信息,进一步降低DME干扰信号估计的归一化均方误差,有效改善L-DACS系统的误码性能,提高传输可靠性。

ZTE Recognized for Industry Best Practices as Frost & Sullivan's SDR Equipment Vendor of the Year

ZTE Corporation announced on February 9 that it had received the Best Practice Award for being Frost ＆ Sullivan＇s ＂2010 SDR Equipment Vendor of the Year.＂ This award recognizes ZTE＇s outstanding contribution to the development of Software Defined Radio （SDR） technology and the wireless communications industry.

CAAC Deputy Director-General Bao Peide On Development of China's Civil Aviation Industry

Not long ago, Bao Peide, DeputyDirector-General of the Civil AviationAdminstration of China (CAAC),briefed Chinese and foreign reporters on thegeneral development trend of China’s civilaviation industry.