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石油企业固定资产投资管理新模式
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作者 李奕 刘德平 耿彦军 《石油大学学报(社会科学版)》 2000年第3期9-11,共3页
针对石油企业投资管理领域尚存的粗放式计划控制、程序漏洞较多、管理效率低下等弊端 ,研究探索了一种全新的投资管理模式。本文全面详尽地推介了这种“贯穿项目建设过程始终、有效涵盖各个环节、计划控制在先、集中统一运作”的新模式... 针对石油企业投资管理领域尚存的粗放式计划控制、程序漏洞较多、管理效率低下等弊端 ,研究探索了一种全新的投资管理模式。本文全面详尽地推介了这种“贯穿项目建设过程始终、有效涵盖各个环节、计划控制在先、集中统一运作”的新模式。实际应用中辅以一套完备的软件系统 ,它对投资管理具有控制、汇总、查询、督导结算的强大功能。实际应用证明其具有较高的管理效率、良好的安全性和操作灵活性。该管理模式及软件系统具有广泛的适用性和推广借鉴价值。 展开更多
关键词 石油企业 投资管理 固定资产投资 投资管理信息系统 制单模块 台帐处理模块 工程结算模块
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Design of Remote Control Nuclear Radiation Detector 被引量:1
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作者 郭银景 李瑾 丁晓明 《Journal of Measurement Science and Instrumentation》 CAS 2011年第4期390-393,共4页
For the issue of nuclear radiation detection,this paper designs a remote control nuclear radiation detector which can trace a pre-determined route,avoid obstacles effectively,and can be controlled remotely by users wi... For the issue of nuclear radiation detection,this paper designs a remote control nuclear radiation detector which can trace a pre-determined route,avoid obstacles effectively,and can be controlled remotely by users wirelessly or through voice command.It can effectively replace manual probing due to convenience,flexibility and safety.The system mainly consists of a nuclear detection module,a voice control module,a route tracing module,an obstacle avoidance module,a data transmission module,storage and a display module,and a D.C.machine.An MSP430 microcontroller is used as a control chip to control the motor and the system uses infrared technology and ultrasonic sensors to achieve intelligent tracing and obstacle avoidance.Moreover,it applies a voice module and data transmission module to remotely controlling the device.The radiation data is shown on an LCD screen. 展开更多
关键词 nuclear detection voice remote control wirelessremote control tracing and obstacle avoidance
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Design of digital control DC voltage source based on AT89C52 MCU
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作者 Wang wei 《International Journal of Technology Management》 2013年第1期107-108,共2页
the system to DC voltage source as the core, AT89C52 MCU as the main controller, the output voltage to set the DC power supply through the keyboard, with a step function voltage to reality, the actual output value. Th... the system to DC voltage source as the core, AT89C52 MCU as the main controller, the output voltage to set the DC power supply through the keyboard, with a step function voltage to reality, the actual output value. This design is divided into four modules: SCM control and display module, digital to analog (D/A) conversion module, a constant voltage source module, output module. MCU control module as the core, the input signal is converted to digital quantity output; constant current source module voltage D/A conversion to analog conversion into constant pressure through a constant voltage circuit. The system has good reliability, high precision. 展开更多
关键词 digital voltage source AT89C52 DAC0832 constant current source
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