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Search Results: 1 - 10 of 311333 matches for " 张徐 "
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深圳市岩溶塌陷监测区土体变形与光纤应变关系室内模拟试验
Indoor Simulation Experiment of Soil Deformation and Fiber Strain Relations in Sinkhole Collapse Monitoring Area, Shenzhen City
 [PDF]

桂香,
Hans Journal of Civil Engineering (HJCE) , 2013, DOI: 10.12677/HJCE.2013.23034
Abstract:
目前国内外在岩溶塌陷分布式监测及预测预报方面还没有成功的应用,在现场实施方面也没有成熟的经验,野外光纤监测仅反应的是光纤的应变量分布及变化,而我们实际需要的是土体的具体沉降量。因此,我们需要建立光纤应变与土体变形的关系,通过光纤应变能够直观反映土体变形量大小。本次试验的主要目的是通过物理模型试验,室内再现不同条件下岩溶塌陷发育的全过程,以此建立土体沉降变形与光纤应变的关系,进而研究岩溶塌陷发育的临界条件,以指导野外监测工作,达到预警预报效果。
Sinkhole collapse at home and abroad in the distributed monitoring and forecasting have not yet successful applications, implementation in the field and no mature experience, field optical fiber monitoring only reflects fiber strain distribution and change, and we really need is specific soil settlement. Therefore, we need to build the relationship in fiber-optic strain and soil deformation, through fiber-optic strain can intuitively reflect the size of soil deformation. The main purpose of this experiment is reproducing the whole process of development of sinkhole collapse under different conditions indoor through physical model experiment, in order to establish the relationship in the settlement of soil deformation and fiber strain, and then research the critical condition of sinkhole collapse development, to guide the field monitoring and achieve early warning and forecast results.
“农超对接”——应对土地抛荒的新机遇
Integrate with Agriculture Base & Supermarket——New Opportunities to Response Abandoned Rural Land
 [PDF]

高华, 邓耀
Modern Marketing (MOM) , 2011, DOI: 10.12677/mom.2011.12007
Abstract: 在中国,二十世纪90 年代农超对接模式和农村土地抛荒问题初见端倪,二十一世纪的今天,他们更成为热点话题。本文首次尝试把“农超对接”和农村土地抛荒两个貌似不相关的问题联系在一起 ,认为农超对接模式的良性发展及推广是应对农村土地抛荒的新机遇。
In China, Integrate with Agriculture Base & Supermarket and the problem of Abandoned Rural Land had begun to take shape in1990s. And they are more than the hot topic in 21st. This is the first attempt to link Integrate with Agriculture Base & Supermarket and the problem of Abandoned Rural Land, which looks like two seemingly unrelated issues. This paper argues that positive development and promotion of Integrate with Agriculture Base & Supermarket is new opportunities to the problem of Abandoned Rural Land.
基于Petri网的铁路大型客运站行车安全研究
Research on Train Operation Safety of Large-Scale Railway Passenger Station Based on Petri Net
 [PDF]

, , 陈晓红
Open Journal of Transportation Technologies (OJTT) , 2013, DOI: 10.12677/OJTT.2013.21010
Abstract:
鉴于铁路大型客运站行车安全的重要性和复杂性,从人因错误和设备故障的角度出发,应用Petri网对铁路大型客运站行车安全进行了系统分析。以某车站发生列车冒进信号事故为例,依据Petri网相关理论构建事故模型,并对模型进行定性和定量分析。研究结果表明,Petri网能够更加清晰和准确地描述客运站行车事故过程,计算得到的结果反映了客运站目前的行车安全状况。
Based on the importance and complexity of large-scale railway passenger station operation safety, large-scale railway passenger station operation safety was analyzed by using the Petri net from the perspective human error and equipment failure. Taking the overrunning of signal accident of a railway passenger station an example, the accident model was built based on Petri net theory, then qualitative and quantitative analysis was made. The results show that Petri net could more clearly and accurately describe the operation accident process of railway passenger station and the calculated results reflect the situation of railway passenger station operation safety.
面向输电线路监测的无线自组织网络多业务支持方案研究
Studies on Wireless Ad Hoc Networks Scheme to Support Multi-Services Oriented to Power Transmission Line Monitoring
 [PDF]

, 毕建军, 亚东, 孙毅
Smart Grid (SG) , 2012, DOI: 10.12677/sg.2012.22009
Abstract:
输电线路监测包含多种业务,由于不同业务对时延、带宽、时延抖动等服务质量有不同的要求,因此,需要一个能够支持多业务接入、并提供相应服务质量保证机制的网络来满足监测的需求。无线自组织网络具有组网方便灵活、可扩展性强、维护简单等优点,近些年来已在电力行业得到了广泛的应用。本文提出了一种基于无线自组织网络的输电线路监测多业务接入方案,能够在无线自组织技术的支持下,满足多种业务在同一个网络中传输的需求,同时针对不同级别的业务,尤其是实时性要求很高的业务,提出识别和分类模型,进行不同的QoS管理,保障相应业务的QoS.
The power transmission condition-base monitoring system includes a variety of services. As the different services have different requirements on QoS, such as delay, bandwidth and delay jitter, we need introduce a kind of effective multi-service access strategy and an appropriate quality of service. Mobile Ad Hoc Networks have advantages of convenient organization, flexible scalability, and easy maintenance. In recent years, it has been widely used in the power industry. This article proposed a power transmission line monitoring multi-service access strategy based on the Mobile Ad Hoc Network, which can meets the requirements of multi-services transmitting in the same network. To high real-time, especially, author proposes an identification and classified model, managing different sevices to assure the corresponding QoS.
极大子群的h-完备与群的可解性
On h-Completion for Maximal Subgroups and the Solvability of Finite Groups
 [PDF]

晓燕, 伟华
Pure Mathematics (PM) , 2011, DOI: 10.12677/pm.2011.12025
Abstract:
本文给出了有限群G极大子群M h-完备的定义,即称C为M的h-完备,若C是M的θ-完备,且有C = G或存在G的一个子群D使得D不是M的θ-完备,但有C < D成立. 从而,可以通过这个定义把θ-完备的极大性削弱,并得到了有关群可解性的重要结论,丰富了有限群理论。
In this paper, we propose new definition of an h-completion for a maximal subgroup M of a group G, that is a θ-completion C such that either C = G or there exist a subgroup D of G which is not a θ-completion for M and C < D holds. This method can weaken the imposed maximality on θ-completion. Moreover, we studied the solvability and of finite groups by means of h-completion and obtained some important properties, which are very useful to research deeply finite groups.
基于贝叶斯网络的城市轨道交通运营系统可靠性评价
The Reliability Evaluation for Urban Rail Transport Operation System Based on Bayesian Network
 [PDF]

陈晓红, ,
Open Journal of Transportation Technologies (OJTT) , 2013, DOI: 10.12677/OJTT.2013.22023
Abstract:
本文以城市轨道交通运营系统为研究对象,通过分析城市轨道交通运营系统可靠性评价指标体系结构,建立基于贝叶斯网络的城市轨道交通运营系统可靠性评价的模型。最后,以某地铁为例,集结专家意见,进行实例分析,并提出了对该地铁运营可靠性的几点改善措施。
The paper is aimed at studying urban rail transport operation system. By analyzing its reliability evaluation index architecture, a model on reliability evaluation for the urban rail transport operation system is established based on Bayesian network. Finally, it analyzes an urban rail by rallying expert advice, calculates the instance and proposes a few points to improve the reliability for urban rail transport operation system.
辽河和大辽河水质指标的空间变化
Space Variation of Water Quantity Parameters in Liao River and Daliao River
 [PDF]

利红, 成斌
Advances in Environmental Protection (AEP) , 2013, DOI: 10.12677/AEP.2013.31B003
Abstract:
本文对辽河12个断面和大辽河3个断面的水质参数:pH、溶解氧、COD、BOD5、氨氮和总磷的空间变化进行了研究。结果表明,辽河和大辽河流域15个监测断面水体的pH值都大于7;辽河上游到下游COD、BOD5呈上升的趋势,大辽河3个断面都达到劣Ⅴ类;监测断面中有接近70% 断面总磷,80%断面氨氮都达到劣Ⅴ类;辽河和大辽河的污染非常严重。

Space variation of water quantity parameters including pH、DO、COD、BOD5、ammonia nitrogen and total phosphorous were investigated in 12 sections of Liao River and 3 sections of Daliao River. The results showed that pH values in 15 sections were above 7. The trends of COD and BOD5 from upstream to downstream in LiaoRiverwere gradually increased. The values of COD and BOD5 in 3 sections of Daliao River reached interior V class. The values of ammonia nitrogen about 70% of all sections and total phosphorous about 80% reached interior V class.LiaoRiverandDaliaoRiverwere seriously polluted.
Markov逻辑网研究综述
Survey of Markov Logic Networks
 [PDF]

元子, 迎新, 刘登第
Software Engineering and Applications (SEA) , 2015, DOI: 10.12677/SEA.2015.43010
Abstract:
Markov逻辑网是将Markov网络与一阶谓词逻辑相结合的统计关系学习模型。Markov逻辑网在实体识别、数据融合、信息抽取等领域都有重要研究价值,具有广泛的应用。本文较为全面的介绍了Markov逻辑网的理论模型、推理、参数学习、与其他算法的比较,最后探讨Markov逻辑网未来的研究方向。
Markov logic networks (MLNs) is a kind of statistical relational learning model which combines Markov network and first-order logic together. MLNs has the significant research value and in many areas it has widely applications, such as entity recognition, data integration and information extrac-tion. In this paper, we introduced the theoretical model of Markov logic networks, inference and pa-rametric learning of it and compared it with other. In the end, we discussed future works of MLNs.
某原料药质量控制实验室设计简介
Introduction of Design of Quality Control Laboratory for an Active Pharmaceutical Ingredient
 [PDF]

媛媛, 孙仁弟, 向阳
Modern Management (MM) , 2016, DOI: 10.12677/MM.2016.64017
Abstract:
本文根据相关法规要求,对某原料药质量控制实验室的设计原则与布局进行了简要介绍,分区对理化控制室与微生物控制室进行了布局阐述,包括设计思路、排风系统、风险控制等因素,为现代化质量控制实验室的设计提供了参考依据。
According to relevant regulations, this paper briefly introduces the design and layout principles of quality control laboratory for an active pharmaceutical ingredient. In this paper, we describe the layout of the physics and chemistry laboratory and microbiology laboratory respectively, including design ideas, exhaust system, risk control and other factors, and provide reference for the design of modern quality control laboratory.
H在Pt/Si上的化学吸附对Pt/Si界面特性的影响
国定,
半导体学报 , 1992,
Abstract: 本文在一维紧束缚近似下,利用格林函数方法和复能积分技术,研究了H在 Pt/Si上的化学吸附对 Pt/Si界面特性的影响。分别以紧束缚的 d轨道模型和sp杂化轨道模型描述金属 Pt和衬底Si,计算了在H被吸附前、后 Pt/Si的界面能和吸附前、后 Pt的厚度对局域在Si一边的界面电子态密度的影响.
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