Periodic Solution and Permanence for a Non-autonomous Predator-Prey Diffusive System and the Periodic Solution on Time Scales 一类非自治的捕食者&食饵扩散系统的持久性和周期解以及时标上周期解的存在性
A weighted role for activating task and periodic time authorization is an unsolved major problem for the access control of a workflow management system ( WfMS). 带权角色激活任务和周期时间授权是工作流系统访问控制研究尚未解决的核心问题。
Show that design condition of switching periodic under dwell time of all subsystems are equalization. 同时当各子系统的驻留时间均等时,得到了切换周期的设计条件。
Enterprise's Life Periodic Time and the Recompense System in Encouragement 企业生命周期与激励性报酬制度
Development of Periodic Eight-channel Time Controller 八通道循环时间控制器的研制
Periodic Time Dependent Predator Prey Systems With Chaotic Solutions 具有浑沌解的周期时间制约捕食者&食饵系统
Introducing CAE technology in the process of the structure design of shotcrete can improve the quality of production, shorten periodic time of development, improve the capability of automatic development of shotcrete, and have great practical value. 在喷浆机器人的结构设计中引入CAE技术,可以提高产品设计质量,缩短开发周期,提高喷浆机器人的自主开发能力,对喷浆机器人的发展具有重大实用价值。
In order to shorten periodic time of mould designing and manufacturing, ensure reliable quality of mould designing and manufacturing, and suit to networked manufacturing trend, researched and developed networked manufacturing platform for mould manufacturing. 为缩短模具设计、制造周期,保证可靠的模具设计、制造品质,适应制造业网络化发展趋势,研究开发面向模具制造业网络化制造平台。
In the task specification, this paper added periodic time constraint which means that the task can only be executed in the periodic time, thus ensure that the authorization valid time is synchronized with the execution time as soon as possible. 在模型的工作流任务规范中加入了时态约束,表示只能在某个时间段内执行该任务,这样可以保证授权有效时间与任务执行时间尽可能同步。
Of the nutrient cycling rates in the soil pool N was the highest ( 3.1%) and Mg was the lowest ( 0 6%), and N periodic cycling time was 32 3 years and that of Mg was 166 7 years. 而土壤库中养分循环速率最高是N(3.1%),最低是Mg(0.6%),相应的周转期分别为32.3年和166.7年。
In the moving vortex lattice phase the time dependent voltage is periodic with time, and the frequency of voltage is proportional to the current density. 在运动涡旋相,电压的轨迹相对时间是周期性的,其振动频率与电流密度成正比。
Principle and performance of SF6 gas density monitor and items, periodic time, standard in field inspection are introduced. 介绍了SF6气体密度继电器的工作原理、主要作用及其现场检验的内容、周期和标准。
Subharmonic Bifurcations and Chaotic Behaviour in the Periodic Time dependent Predator prey System with Constant Harvesting Rates 一类具收获的捕食者&食饵系统的周期解分枝与浑沌现象
The liquid-phase operation shortened the periodic time to 2~ 3 hours. 操作周期缩短到2~3h。
The method of discrete spectral line identification presented in this paper applies to the precise spectral analysis of all kinds of periodic time domain signals. 本文提出的分立谱线辨识方法普遍适用于各种周期性时域信号的精密谱分析工作。
This paper describes the sequence time constraint and periodic time constraint. 该文就连续时间约束和周期时间约束进行了描述。
Skid bank fatigue life test of automobile transmission assembly has a long periodic time. There are many kinds of fault happening during test and the occurence of fault is highly random. 汽车变速箱总成台架疲劳寿命试验周期长,试验过程中故障种类多,而且故障的发生具有很大的随机性,这些给试验人员带来极大困难。
A Weighted Role and Periodic Time Access Control Model of WorkFlow System 工作流系统带权角色与周期时间访问控制模型
The skid bank fatigue life test of automobile transmission assembly has a long periodic time, which should go on under certain temperature and load. 变速器总成台架疲劳寿命试验周期长,并且要求其在一定温度、载荷下进行。
The second part is to establish the LaSalle invariant principle for the periodic time-varying systems. 第二部分为周期时变系统的LaSalle不变原理。
After hot metal preprocessing and secondary refining technology achieved, long life combined blown converter had been developed in order to ensure high quality and low cost molten steel. It can reduce refining periodic time and improve rhythmic production. 重钢在铁水预处理、LF炉外精炼配套技术完善以后,为保证优质、低耗的连铸钢水,进一步缩短冶炼周期和提高生产节奏,开发了长寿复吹转炉冶炼技术。
It is all known that molecular marker-assisted selection ( MAS) technology provided a new method for rice breeding. Integrated with traditional breeding technology, breeding efficiency was enhanced and breeding periodic time was shortened markedly. 分子标记辅助选择技术给水稻育种提供了新的途径,与传统育种技术相结合,可大大提高育种效率,缩短育种周期。
Fourier Series Model in Forecasting the Non-seasonal Periodic Time Series Data 利用Fourier级数模型预测具有非季节性周期的时间序列
After irrigation, with varying of the temporal hour soil matric potential follows periodic increase and decrease regularity, Its charging periodic time is 24-hours. 灌水之后土壤基质势随时间的变化遵循周期性增减的规律,其变化周期为24h。
Thus, in this paper we introduce a new problem: mining association rules of abnormal patterns on correlative periodic time series. 因此,本文研究了一个新的问题:挖掘相关时间序列上异常模式之间的关联规则,具体分析了具有周期性质的时间序列数据。
In the third subsection, we introduce a good approach ( Floquet theory) to study of quantum systems with their Hamiltonian being a periodic function in time. 第3节我们系统的介绍了用于研究周期含时哈密顿量的一个好的数值方法:Floquet理论方法。
As a bridge between the linear time invariant systems and time varying systems, linear periodic time varying systems are a class of systems of great importance. 作为连接线性时不变系统和时变系统的桥梁,线性周期时变系统是一类非常重要的系统。
The spot initiates to detect temperature according to predefined periodic time. If the temperature measured is higher than the stated threshold, the spot opens receiving module to wait for the enquiring message from host so as to send temperature data. 测温节点根据设定周期启动测温,如果温度超过设定阈值,则打开收发模块,等待主机的轮询信号以便发送温度数据。
The algorithm is based on post-facto. The synchronization operation is drived by target tracking process, which can reduce the energy consumption in network due to periodic time and the synchronization error over time. 算法基于后同步思想,时间同步操作由目标跟踪过程驱动,在节省了周期性时间同步操作引起的网络能耗同时,有效降低了随时间推移递增的同步误差。
By constructing network, periodic time series lead to regular network, random time series are changed into network with exponential degree distribution, and fractional Brownian time series give network with power-law degree distribution. 通过构造网络,周期时间序列转化成了规则网络,随机时间序列转化成了度分布为指数形式的网络,分形时间序列被转化成了度分布为幂律形式的无标度网。