There is the higher fault probability under the bad work conditions of the rod pumping *** to the failure of the sucker rod pumping installation,a comprehensive survey is carried *** is many influence factors of deep ...
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There is the higher fault probability under the bad work conditions of the rod pumping *** to the failure of the sucker rod pumping installation,a comprehensive survey is carried *** is many influence factors of deep well pump working downhole,not only influenced by the machine,wells,pumping equipment,but also by sand,wax,gas,*** conditions can be diagnosed by surface dynamometer card,surface dynamometer card is the first-hand information collected in pumping well of *** analyze the Characteristics of the different fault dynamometer,Lay the foundation for the further fault diagnosis and *** different pattern of the different dynamometer is important.
in real life,random wireless sensor network is very common,such as network of monitoring nodes in rural anti-theft system and as well as in agriculture-forestry environmental monitoring,and so ***-scale network,intens...
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in real life,random wireless sensor network is very common,such as network of monitoring nodes in rural anti-theft system and as well as in agriculture-forestry environmental monitoring,and so ***-scale network,intensive nodes and disorganized distribution are the features of this *** we transmit data by point-to-point method on such a network,then there exist disadvantages of large transmitting power at the monitoring nodes and high energy consumption of the nodes,so networking between nodes is inevitable *** on the characteristics of random wireless sensor network proposed routing layer number generation algorithm and dynamic routing algorithm for random wireless sensor network,to achieve transmit reliable data stably between routing nodes.
Remote file systems provide the same interface to the application program as local file systemsIn this paper, we have studied the general architecture of remote file system, They were divided into a client part and a ...
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Remote file systems provide the same interface to the application program as local file systemsIn this paper, we have studied the general architecture of remote file system, They were divided into a client part and a server partSince both the client and the server may buffer disk blocks, we discussed most effective buffering strategy to incorporate into the systemIn the remote file, either the disk or the machine may be happen complex crash, and the information may be loss, so we have researched the incorporation of crash recovery, include Recovery-oriented File Servers and the Performance-oriented File Servers.
In order to achieve maximum efficiency in service discovery and integrate heterogeneous services effectively, we need better ways to discover needed services, according to the interface description. In this paper, we ...
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In order to achieve maximum efficiency in service discovery and integrate heterogeneous services effectively, we need better ways to discover needed services, according to the interface description. In this paper, we explore the view that Web service can be studied as a network with a number of nodes connected by edges from perceptive of complex network. We also propose an effective method to visualize them combined with services quality and analyze their macroscopic properties. Then we test the proposed method with public data sets. It is demonstrated that the derived Web service network can exhibit obvious characteristics of small-world, scale-free and high-cohesion, in accordance with other natural and artificial systems. The results have some practical values including an effective way of Web service discovery and classification.
Combined with the world trend of development of vocational education and the status of entrepreneurship education and the main problems, entrepreneurship education curriculum was designed for in line with China's ...
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Combined with the world trend of development of vocational education and the status of entrepreneurship education and the main problems, entrepreneurship education curriculum was designed for in line with China's national conditions of vocational educationIt provides a reference for entrepreneurship education occupation colleges in China.
The current status of technical development of annular shaft kiln for limestone calcination production is described in this *** on the existing technological accumulation,a new type annular shaft kiln with capacity of...
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The current status of technical development of annular shaft kiln for limestone calcination production is described in this *** on the existing technological accumulation,a new type annular shaft kiln with capacity of 600t/d has been developed independently by Beijing Shougang international Engineering Technology ***.A number of key technologies of the new type large annular shaft kiln are researched and integrated,include thermal process system determination,lining refractory structure optimization,heat-exchanger configuration *** major advanced characteristics of new type annular shaft kiln are energy saving,higher efficiency,lower environmental pollution,lower emission,lower engineering investment,and lower operation *** excellent performances and application results in production have been achieved at Shougang Qiangang steel plant.
As a new application pattern, knowledge service has been rapidly developed in recent years. How to integrate the existent knowledge services to form a newly complex service is a popular research area. This paper prese...
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As a new application pattern, knowledge service has been rapidly developed in recent years. How to integrate the existent knowledge services to form a newly complex service is a popular research area. This paper presents a framework to support dynamically service composition. And then we focus on the global optimal model of knowledge services composition. The essence of the model is that the problem of dynamic service selection with QoS global optimal is transformed into a liner integer programming with QoS constraints. At last, a set of optimal service composition is produced by means of optimizing objective function, which fulfills requires of users and improves the dynamical and flexible capability of service composition.
E-commerce industry in Indonesia has grown rapidly since 2012. This development is also in line with the number of transactions that uses credit cards. Unfortunately, this phenomenon is followed by credit card frauds ...
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E-commerce industry in Indonesia has grown rapidly since 2012. This development is also in line with the number of transactions that uses credit cards. Unfortunately, this phenomenon is followed by credit card frauds as well. Therefore, there is an urge for a standard to be used as a main reference in protecting the security of information. Visa and MasterCard have issued an international standard to ensure the security of credit card data, namely, PCI DSS. It emphasizes the importance of protecting cardholder information in one's daily business processes. On December 2013, the latest version of this standard was released, and brought about difficulties, even to those organizations that are already compliant to previous versions of the same standard. The aim of this research is to be able to identify the changes brought about by the latest PCI DSS, namely, version 3.0. Furthermore, this research is intended to implement that very standard to measure an organization's compliance level. This research uses a case study approach in Indonesia largest company in online payment services. The results of this research are the summation of 182 new controls that are simplified for use by organizations that have complied with PCI DSS 2.0 and are preparing for PCI DSS 3.0. Additionally, we found that Company X, the object of our case study, is compliant towards 77.43% of PCI DSS 3.0 requirements. Payment card industry data security standard is considered at its earlier stages. We believe that this research is one of the first in observing the changes brought about by PCI DSS 3.0 as well as in implementing it to measure an organization's compliance level.
In view of shortcomings of the traditional wireless video-surveillance system based on the mobile networks,we have designed and realized an embedded wireless video-surveillance system based on 3G and Hi3511 *** system...
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In view of shortcomings of the traditional wireless video-surveillance system based on the mobile networks,we have designed and realized an embedded wireless video-surveillance system based on 3G and Hi3511 *** system consists of three components:video server,transmission network and monitoring *** video server was achieved with Hisilicon Hi3511's *** transmission network was based on the 3G network and TCP/*** client was based on C/S and achieved with *** section is described ***,the practical operating results.
The hydration degree of fly ash and the calcium hydroxide(CH) content were *** with the equilibrium calculation of cement hydration,a new method for assessment of the hydration degree of cement in the fly ash-cement(F...
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The hydration degree of fly ash and the calcium hydroxide(CH) content were *** with the equilibrium calculation of cement hydration,a new method for assessment of the hydration degree of cement in the fly ash-cement(FC) pastes based on the CH content was *** results reveal that as the fly ash content increase,the hydration degree of fly ash and the CH content decrease gradually;at the same time,the hydration degree of cement *** hydration degree of cement in the FC pastes containing a high content of fly ash(more than 35%) at 360 days is as high as 80%,even some of which hydrates nearly *** effect of water-cement ratio to the hydration degree of cement in the FC pastes is far less distinct than that of the content of fly ash.
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