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针对XML 数据半结构化的特点及概率查询的理论,结合蚁群算法,提出添加杂交
算子,更新信息素的方法,不仅能动态选择数据查询方向。...
针对XML 数据半结构化的特点及概率查询的理论,结合蚁群算法,提出添加杂交
算子,更新信息素的方法,不仅能动态选择数据查询方向。
- 2023-05-19 01:10:03下载
- 积分:1
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这是一个xilinx相关的ug012 文档
这是一个xilinx相关的ug012 文档-This is a Xilinx ug012 related documents
- 2023-02-02 15:00:05下载
- 积分:1
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GSM
利用通讯模块进行数据通信,就是将数据体作为短消息的内容,从发送方的通讯模块发送出去,通过短消息中心进行转发,接收方通讯模块收到此短消息后即存储在SIM卡上,模块外接的控制器(如单片机、计算机等)从模块中读取短消息后,根据需要将无用的信息去除,取出有效信息,然后将SIM卡中的短消息删除,这样就完成一次单向数据的传输。利用通讯模块的短消息方式实现数据的发送和接收具有通信成本低、系统容量大、抗干扰能力强等优点,而且短消息经过服务中心再到达目的地的特点使通讯模块无需24小时开机,降低了系统功耗,特别适合遥控、遥测、远程信息处理和通信等领域。-GSM
- 2023-06-10 04:50:03下载
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摘 要:建立了几个军事短波通信系统仿真模型,并简要叙述了军事短波通信系统中跳频、扩频的干扰方程。文章给出了仿真物理结构图以及功能模块图,也给出了军事短波通信抗干...
摘 要:建立了几个军事短波通信系统仿真模型,并简要叙述了军事短波通信系统中跳频、扩频的干扰方程。文章给出了仿真物理结构图以及功能模块图,也给出了军事短波通信抗干扰性能仿真评估的指标,提出了利用云模型及云不确定性推理对仿真结果进行评估,并给出了干扰和无干扰条件下军事短波通信的抗干扰性能评估结果。-Abstract: A number of military HF communications system simulation model, and a brief description of the military short-wave frequency-hopping communication systems, spread spectrum interference equation. In this paper, simulation of the physical structure and function module map also gives the military a short-wave communications simulation to assess anti-interference performance indicators, the use of cloud model and the cloud of uncertainty reasoning to assess the simulation results are also given interference and non-interference under the conditions of military HF communication the results of the assessment of anti-interference performance.
- 2022-04-19 21:53:06下载
- 积分:1
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程序员对代码所做的为了满足短期利益代码改动,或再没有完全清楚增个架构下的改动,都很容易是代码失去它的清晰结构,偏离需求或设计。而这些改动的积累很容易使代码偏离它...
程序员对代码所做的为了满足短期利益代码改动,或再没有完全清楚增个架构下的改动,都很容易是代码失去它的清晰结构,偏离需求或设计。而这些改动的积累很容易使代码偏离它原先设计的初衷而变得不可立即和无法维护。
Refactoring则帮助重新组织代码,重新清晰的体现结构和进一步改进设计。
-programmers to code done in order to meet short-term interest code changes or not entirely clear by a framework of the changes, it is easy to lose its code is a clear structure, depart from the demand or design. And the accumulation of these changes are easier to make code from its original intention of the original design has become an immediate and unable to preserve. Refactoring is helping to reorganize code, re- clearly reflected structure and further improve the design.
- 2022-07-24 14:25:19下载
- 积分:1
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本文的内容是从概念上介绍USB软驱固件设计的各个步骤,这些步骤中的重点在于USB设备的枚举,Mass Storage CBI协议/UFI命令的处理以及本设计中所...
本文的内容是从概念上介绍USB软驱固件设计的各个步骤,这些步骤中的重点在于USB设备的枚举,Mass Storage CBI协议/UFI命令的处理以及本设计中所采用的DataFlash AT45DB161B的读写。-the content of the paper is to introduce the concept of USB floppy drive firmware design of the various steps These steps will focus on the USB device enumeration. Mass Storage CBI agreements/UFI order processing and the design used by the DataF lash AT45DB161B literacy.
- 2023-07-08 22:45:04下载
- 积分:1
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MAXIM 504 DAC 数模转换器说明书
MAXIM 504 DAC 数模转换器说明书-User manual for Maxim 504 DAC
- 2022-01-26 03:37:58下载
- 积分:1
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DVB Document A053 Extensions to the Common Interface Specification
DVB Document A053 Extensions to the Common Interface Specification
- 2022-11-04 20:05:03下载
- 积分:1
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G.726.pdf――ADPCM的标准协议。
G.726.pdf――ADPCM的标准协议。-G.726.pdf--ADPCM standard protocol.
- 2022-05-08 21:43:29下载
- 积分:1
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S3C2440 development board
s3c2440开发板的pcb库可以方便大多数人画pcb封装的烦恼-S3C2440 development board
- 2022-02-14 12:33:40下载
- 积分:1