作业

Aiming at some problems of safety assessment and influence factor of oil﹠gas drilling hoisting system process. The thesis analyses oil﹠gas drilling hoisting system hazard and accident style. From human-machine- environment viewpoint and according to the establishing principle of safety assessment index system, set up oil﹠gas drilling hoisting safety assessment system.

针对油气钻井起升系统作业安全影响因素和安全评价中的问题，分析了油气钻井起升系统作业的危险源及风险事故类型；从人-机-环境系统的观念出发，根据安全评价指标体系建立的原则，构建了包括起升系统设备设施因素、作业人员安全管理因素、安全管理制度因素、事故应急响应因素、作业环境因素的油气钻井起升系统作业的安全评价指标体系。

Aiming at some problems of oil﹠gas drilling safety assessment methods, such as bad cooperation, not scientific of general judgment, not comprehensive or exact of the index contents and so on, considering the wide meaning, complex, high chiasma and faintness of oil﹠gas drilling process safety assessment index and the complexity of the assessment system itself and the particularity of hoisting system, this paper mainly studies on safety assessment indexes system and safety assessment method of oil﹠gas drilling hoisting system process .

针对目前油气钻井作业安全评价分析方法的配合性差、综合评判的科学性不强、评价指标反映的内容不全面和不准确等问题，并考虑到油气钻井作业安全评价指标体系中评价指标含义面广、交叉性和模糊性强，以及评价指标体系结构自身的复杂性和油气钻井作业八大系统中起升系统作业的特殊性，本论文重点对油气钻井起升系统作业安全评价指标体系及安全评价分析方法进行了研究。

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

Do one's homework 做作业 She is going to do her homework.do the housework 做家务 She is going to do the housework.

前者这个名词是作"家庭作业"或"课外作业"讲，后者这个名词是作"家务"讲，不容混淆。

Client supplies complete Graphic User Interface, accomplishing the management of JobFlow and system. Communication agent accomplishes complete communication between client and server by TCP/IP network communication protocol and platform independent data communication protocol. Server supplies full support of JobFlow. The superstratums are the JobFlow Definition Subsystem and JnwEngine, which are responsible for the definition and execution of JobFlow. The understratum is the Network Queue System , which realizes the schedule and execution of job, thus all kinds of resources in computer network system can be utilized in order to improve execution efficiency and reduce job cost.

客户端提供完全的GUI用户界面，完成用户对作业流的管理及对系统的管理功能；通讯代理采用TCP／IP网络通信协议以及与平台无关的数据通讯协议来实现客户与服务器之间的完全通讯；服务器端提供对作业流的全面支持，上层由作业流定义子系统和作业流引擎负责完成对作业流的定义与执行，底层使用网络队列系统来实现对作业的调度与执行，使用户能够最大限度地利用计算机网络系统中的各种资源，以提高执行效率、降低作业成本。

Communication agent accomplishes complete communication between client and server by TCP/IP network communication protocol and platform independent data communication protocol. Server supplies full support of JobFlow. Its superstratum is the JobFlow Definition Subsystem and JnwEngine, which is responsible for the definition and execution of JobFlow. And its understratum is the Network Queue System, which realizes the schedule and execution of job. Through the NQS, all kinds of sources in computer network system can be farthest utilized in order to improve execution efficiency and reduce job cost.

客户端提供完全的GUI用户界面，完成用户对作业流的管理及对系统的管理功能；通讯代理采用TCP／IP网络通信协议以及与平台无关的数据通讯协议来实现客户与服务器之间的完全通讯；服务器端提供对作业流的全面支持，上层由作业流定义子系统和作业流引擎负责完成对作业流的定义与执行，底层使用网络队列系统来实现对作业的调度与执行，使用户能够最大限度地利用计算机网络系统中的各种资源，以提高执行效率、降低作业成本。

ABSTRACT According to the point of view of enterprise strategy management, Activity-Based Management of Whole Business Process combines supply, production and distribution of enterprise tightly and appropriately. In strategic, from the high point when all comes to all of enterprise, ABMWBP attaches importance to effect of every activity to targets of management and strategy, and advocates that every activity must be for whole benefits. In tactics, by going into the most elementary part of enterprise business---activities, and by controlling resources consumed by it, costs of activities are reduced and the process efficiency is improved greatly.

企业生产经营全过程作业管理的理论和方法是从企业全过程的战略高度出发，把企业供、产、销有机地结合在一起；在战略上，全过程作业管理站在企业全局的高度，重视每一项作业对企业经营目标和战略目标的作用，提倡每一项作业的安排必须服从企业的整体利益；在战术上，它通过深入到企业生产经营最细微的作业层次，从构成企业基本活动的作业着手，通过控制作业的资源消耗，达到控制企业成本、提高过程效率的目的。

Geography homework design should also the body living this principle now, this text front place homework and postposed homework design to do study:Front place homework proper and plain, have a direction type, personal with group cooperation combine together, have to open sex;The classroom homework want to with meticulous care choose while and then placing homework design, innovation design fill diagram homework and expand extension homework outside the lesson, homework outside the lesson also should recreation.

地理作业设计也应体现生本理念，本文就前置作业和后置作业设计做了探讨：前置作业宜浅显、具有导向型、个人与小组合作相结合、具有开放性；而后置作业设计时课堂作业要精心选题、创新设计填图作业、拓展延伸课外作业、课外作业也应休闲。

Geography homework design should also the body living this principle now, this text front place homework and postposed homework design to do study:Front place homework proper and plain, have a direction type, personal with group cooperation combine together, have to open sex;The classroom homework want to with meticulous care choose while and then placing homework design, innovation design fill diagram homework and expand extension homework outside the lesson, homework outside the lesson also should recreation.

郭思乐教授提出的&一切为了学生，高度尊重学生，全面依靠学生&的生本理念，注重培养学生学习的主动性和自主性。地理作业设计也应体现生本理念，本文就前置作业和后置作业设计做了探讨：前置作业宜浅显、具有导向型、个人与小组合作相结合、具有开放性；而后置作业设计时课堂作业要精心选题、创新设计填图作业、拓展延伸课外作业、课外作业也应休闲。

In order to make the process of rain increasing by roct more precise and more efficient by means of determining the objective according to data,it is advisab e to link TWR01 radar,714CD radar truck-mounted type WR-1B rocket launch work spot and the work control center by applying synthetically computer network optical fiber GPS wireless communication techology,and to form a rain increasing work direction system,which can enhance scientific levels of the direction and the spot work in rain increasing.

为了细化火箭增雨作业过程，依据数据确定目标有效实施增雨作业，通过综合运用计算机网络光纤GPS无线通信技术链接TWR01雷达、714CD雷达车载式WR—1B火箭发射作业点、作业指挥中心，形成增雨指挥作业系统，提高了人工增雨科学指挥、科学作业水平。TWR01雷达计算机系统自动解算出火箭发射装置的作业参数，GPS确定火箭作业地点，增强了火箭发射地点、方位、仰角、高度、行程等作业数据的准确性和科学性。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。