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1.
基于GMS的模拟结果绘制岩溶区地下水位等值线图 总被引：1，自引：1，他引：0
研究区内岩溶地下水的运动既受区域性水势场的控制,也受岩溶管道分布的影响,为了正确反映在上述2种因素共同作用下地下水的运动轨迹,使用耦合了达西流与非达西流于一体的GMS软件包进行数值模拟,并根据模拟结果分析等水位线图。结果表明,比较丰水期与枯水期的等水位线图后发现,研究区地下水在丰水期的运动明显受到岩溶管道分布的影响,而在枯水期的运动则不受岩溶管道的影响,分析认为这是由于在枯水期地下水位低于岩溶管道底板的原故。 相似文献
2.
The basic phase is selected according to the measured phase diagram, two isothermal sections and two vertical sections of the Al 2O 3-CaO-SiO 2 ternary system are calculated using FACT software. The sections in the same conditions are described through the measured phase diagram. Because of the complexity of this ternary system, there is a large difference between the measured and the calculated phase diagram. It is necessary for FACT to ameliorate the calculation model and perfect the database in calculating oxide system which the interaction is strong. For this kind system, the isothermal section and vertical section should be founded through the experiment result and referencing the calculated phase diagram at the same time. 相似文献
3.
In accordance with the shortage on the application of the traditional calibration Solution of environmental test equipment, this paper proposes a solution of flexible field calibration , which can be applicable to all sorts of environmental test equipments widely. The frame of system hardware and software is presented firstly through the system requirement analysis, then the key matter - - flexible calibration is analyzed and expatiated more deeply. Through actual test , it is shown that the solution put forward in this paper have notable applied values and spread significances. 相似文献
4.
In the base-knowledge economic age,as far as how to improve work efficiency of knowledge worker is concerned,this paper analyzes influential factors of work efficiency of knowledge worker on the whole,and classifies them into four sorts: individual factor,task factor,management factor,environment factor.The authors establish concept model in crucial influential factors according to interrelated theory of management and psychology.The interrelation and workable mechanism of influential factors are analyzed according to the characteristics of knowledge worker and individual behavior model on the bases of theory of achievement and motivation.The result shows individual factors affect work efficiency directly,task factor,management factor and environment factor which support and restrict individual factor indirectly affect work efficiency. 相似文献
5.
The required testing duration of software reliability demonstration testing (SRDT) for the continuous safety-critical software is generally too long to endure. To solve this problem, a new continuous Bayesian-based SRDT scheme (CBSDF) for the safety-critical software is proposed by using the decreasing function method with the prior information. The representative decreasing function of the continuous reliability index (such as the failure rate) is selected to construct the prior distribution density function (PDDF). Then, the estimation values of the hyper-parameters of PDDF are calculated according to the prior information (i.e. the failure data collected in reliability growth testing) to obtain the posterior distribution and the detailed form of CBSDF. By selecting two failure data-sets as the source of prior information, the proposed CBSDF is compared with two existing Bayesian-based schemes (i.e. CBS1 without prior information and CBS2 with prior information). The experimental results show that with the same given reliability index, the proposed CBSDF is more effective than CBS1 and CBS2 by significantly decreasing the required testing time of SRDT and more suitable for the safety-critical software with high reliability. 相似文献
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新时代教育背景下,加强高等院校思政教育已成为各方共识,然而目前高等院校“农产品加工工艺学”课程教学中未形成鲜明的思政教育体系。从高等院校“农产品加工工艺学”的教学现状出发,挖掘课程中的思政教育元素,结合课堂设计、微课授课模式及第二课堂,建立“思政教育”与“农产品加工工艺学”相结合的课程教学体系,有助于培养满足现代食品行业需求的高素质专业人才。 相似文献
8.
海参是一种重要海珍品,具有独特的营养和市场价值。通过对我国海参的养成和加工情况的分析和评价,特别是对海参的营养功能和加工方式的详细论述,更加确定了海参是典型的的营养保健食品。海参的独特性质与其特殊保健作用密切相关,通过海参的精深加工,可以制成多种保全海参活性营养、易于吸收利用的高科技产品。随着海参加工工艺的进一步研究,海参的产品种类将越来越丰富,可以使更多的人认识海参的药用价值和营养价值。 相似文献
9.
According to the low voltage power line channel features,combined with adaptive bit loading and power allocation algorithm,an optimal equivalent subchannel algorithm is proposed.Under the condition of fixed amount of transmitted bits and the minimum transmitted power model,impact of optimal equivalent subchannel on the system performance is studied.The optimization algorithm sorts subchannels with similar transmission features into groups,thus the signaling load can be reduced,and the spectrum can be better used.The simulation results show that system can get lower bit error rate(BER) by adopting optimal equivalent subchannel algorithm. 相似文献
10.
The establishment of the competition legal system is the response to the social and economical reality. The perfection of the competition legal system needs the support of economic theory. Therefore, analyzing the competition from the law and economic perspective is propitious to perfect the regulation of competition in the law system constantly, guarantee and promote competition, and thus to establish and maintain reasonable and efficient competition order, promote market-economy developing prosperously and harmoniously. The paper uses the study methods of economical and comparative analyze, explore the sorts of competition and their effectiveness, believe that the perfection of the competition legal system should firstly definite that its adjust object is the effective competition with monopoly factor; though the exemption of competition cant be avoid, it continuously appears shrinking trend. The competition legal system will play a more important role in the economical life. 相似文献
11.
Binary eutectic salt is fit for low temperature cool storage in industry based on the theory of thermodynamics. Two sorts of binary eutectic salt were found by the experiments of freezing and melting. The thermophysical properties including freezing point, melting point, super-cooling degree and thermal stability during phase change process were investigated. The results show that these two sorts of binary eutectic salt are hope to be suitable for low temperature cool storage. 相似文献
12.
The prediction of network traffic flow is a problem of great significance in the research work of resource allocation and congestion control. Based on this accurate prediction, the scheme of resource allocation and control can easily adapt to dynamic variations of incoming traffic flow. So the goal of optimal network performance is achieved. There are many sorts of traffic flow of self-similarity characteristics in high-speed network, and some research work has showed this self-similarity keeps in close contact with the attractor of chaos system. A rate prediction of self-similar traffic sources in high-speed network is proposed as well as the maximum of predictable time by applying the technology of phase space reconstruction about chaotic time series. This method has a simple prediction mode, and the result of simulations indicates it also has highly accurate results. 相似文献
13.
根钻和图像法测定棉麦套种及单种作物根长密度的精确性研究 总被引：1，自引：1，他引：0
【目的】研究田间根钻取样结合计算机图像软件分析方法测定棉麦套种及单种作物根长密度的精确性。【方法】结合田间根钻取样,分别用图像法(DT-SCAN图像软件分析法)和直尺法(常规人工直尺测量法)测量根长密度,通过2002―2013年试验获得的3423对根长密度数据分析图像法的精确性,使用根均方差描述图像法测定值(模拟值)与直尺法测定值(观测值)之间的一致性。【结果】2种方法测定根长密度的相关性较好,图像法的精确性较高。对可能影响图像法精确性的因素分析表明:(1)在不同种植模式下图像法的精确性表现为小麦单种模式棉花单种模式麦棉套种模式;(2)随着土壤深度增加,图像法的精确性增加;(3)在麦棉套种模式下图像法的精确性从麦幅到棉幅逐渐提高,在小麦单种模式下行上大于行间,在棉花单种模式下行上小于行间;(4)在棉花开花前图像法的精确性表现为棉花单种模式大于麦棉套种模式,在棉花开花后表现为棉花单种模式小于麦棉套种模式。【结论】田间根钻取样结合计算机图像软件分析方法测定棉麦套(单)种作物根长密度的精确性较高,该方法成本低、测定速度快,能更好地扫描并分析计算棉花的细小侧根,具有较强的先进性和较高的可靠性。 相似文献
14.
目的：研究以农作物秸秆作为主要原料栽培灵芝的效果。方法：采用二因素随机区组设计研究不同秸秆种类和玉米粉用量对灵芝生物转化率的影响。结果：秸秆种类和玉米粉用量对灵芝生物转化率均有显著影响。结论：用稻草、麦草和油菜杆做主要原料栽培灵芝是不可行的,而用大豆秸、豌豆秸、蚕豆秸、花生秸等豆科植物秸秆及玉米芯、玉米秆、棉籽壳栽培灵芝是可行的。用大豆秸等豆科植物秸秆及棉籽壳栽培灵芝,培养基中玉米粉的最佳用量为6%,生物转化率可达66%~80%;用玉米芯、玉米秆栽培灵芝,培养基中玉米粉的最佳用量为9%,生物转化率分别为74 相似文献
15.
非生产期内不同橡胶苗生长比较研究 总被引：1，自引：1，他引：0
为了研究非生产期内不同砧木类型橡胶苗对橡胶树茎围生长和可开割率的影响,利用从同一批次苗木中按砧木大小及其胶乳分级后选出的4种袋装苗和籽苗芽接苗（袋装苗）,进行大田非生产期内的生长比较研究。结果表明：在定植时5种袋装苗之间的接穗直径存在显著差异,至开割前各种苗木茎围差异不显著,小苗和随机苗具有相对较快的茎围增长速率;定植7年后随机苗的可开割率最低,但达到开割标准;所有苗木的茎围生长呈现出规律性的增长,均拟合同一线性方程。说明对橡胶苗木进行分级后定植,有利于提高橡胶树的可开割率,非生产期内橡胶幼树的茎围生长呈线性增长。 相似文献
16.
A digital detecting system of the dielectric loss in the capacitive equipment is introduced based on virtual instruments.This system can real-time collect,analyze,process and storage electrical signals with National Instruments' program LabVIEW and ADLINK,s DAQ board.Through the simulation test in lab and the real test in electric substation,it is shown that this system has high accuracy on testing the dielectric loss in the capacitive equipment,the real test data is stable and the relative error of real dielectric loss is less than 5%.It is to say that this system can meet the requirement of the real on-line monitoring. 相似文献
17.
The mountainous area construction in city and the traffic way of walk is unified into the common organism through the reasonable way. This arcticle elaborates this unique space culture of the mountainous area city emphatically, and summarized six sorts of paragenesis, and provides the basis for the walk space design of mountainous area. 相似文献
18.
In order to solve the problem of software system protection and recovery in large computer laboratory , this paper analyses the current state of software system protection & recovery technology and it's defects in safety and stability. The reason causing these problems are discussed. Some solution plans are suggested.The authors hold that there have two way to solve these problems completely , one is strengthening the support from hardware , particularly strengthening the support to recover card directly from BIOS, another is developing new Host/Terminal computer system , protecting software system by ARC. 相似文献
19.
The simulink of the power system can help people to analyze the actual power system's various state.As an important instrument,the Matlab software gains the recognition because of its all-sided and professional features.But when it is used in the field of dynamic process of the power system,there exist some disadvantages such as the difficulty of the modeling.The state-space module can be used to set up the three rank compact model of the generator and the electrical machine.It makes the modeling more convenient and more easily jointed to the system's primary parameter such as voltage and frequency.The typical model of the power system is built including the generator,electrical wire,load and SVC by using the function of the Simulink.In order to make the model's physical conception,some necessary predigestion is made to the typical model.At last,some conclusions about the voltage stabilization are gained by using the simulink of the system's malfunction,testifing the correctness and feasibility of this compact modeling. 相似文献
20.
目的:研究以农作物秸秆作为主要原料栽培灵芝的效果。方法:采用二因素随机区组设计研究不同秸秆种类和玉米粉用量对灵芝生物转化率的影响。结果:秸秆种类和玉米粉用量对灵芝生物转化率均有显著影响。结论:用稻草、麦草和油菜杆做主要原料栽培灵芝是不可行的,而用大豆秸、豌豆秸、蚕豆秸、花生秸等豆科植物秸秆及玉米芯、玉米秆、棉籽壳栽培灵芝是可行的。用大豆秸等豆科植物秸秆及棉籽壳栽培灵芝,培养基中玉米粉的最佳用量为6％。生物转化率可达66％-80％:用玉米芯、玉米秆栽培灵芝,培养基中玉米粉的最佳用量为9％,生物转化率分别为74．5％和50％。 相似文献