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In this paper we propose a local, completely autonomous protection system against voltage instability that can be readily integrated in the controller of each bulk power delivery LTC transformer. The protection system will identify an imminent voltage instability and will subsequently apply the necessary corrective measures to restore stable operation by properly adjusting the distribution voltage...
This paper discusses the 21st century substation design requirements, which should meet the following criteria: improved reliability, cost, interoperability, reconfigurability, security, controllability and flexibility. Such criteria require designs that use new methodologies quite different from the existing philosophy. The design strategies are focused on reducing cost while maintaining the performance,...
A fibre-optic biochemical gas sensor (bio-sniffer) for gaseous formaldehyde (FA) was developed and applied for on-site assessment of FA detoxification. The bio-sniffer measures FA as a fluorescence of reduced nicoti-namide adenine dinucleotide (NADH) which is the product of formaldehyde dehydrogenase reaction. The detection limit of the bio-sniffer for gaseous FA was 2.5 ppb, which is enough lower...
The progress of distributed interaction simulation is restricted by the traditional Basic Simulation Computing Resource (BSCR). It is difficult to speedily customize BSCR on demand. Aiming at this question, a BSCR management platform is proposed based on the virtualization technology. Upon the platform, users could apply for a Virtual Machine (VM) as BSCR to execute simulation application. B/S architecture...
Typical remote sensing image interpretation consists of large number of long-lived independent computation jobs such as calibration, correction, and transformation and computation. These time consuming jobs are suitable for execution in desktop grid with high performance commodity PCs for its lower cost and high management ability. In this paper, a framework of parallel remote sensing image interpretation...
Internet Protocol (IP) telephone, a new way of communication, is growing rapidly in the telecommunication industry. A number of major phone carriers are competing to gain customers in home and business markets. However, there are very few schools at the university level that offer IP Telephone courses. It is rare to find documentation on curriculum and laboratory development, even though some schools...
In this paper, UDP transfer scheme is presented to address data uploading of a measurement system. Based on principal analysis, functional block of UDP transfer module is discussed. Then network interface circuits, UDP protocol stack and usage of limited random accessed memory is detailed. Experiments showed that applied UDP module met requirement of data transfer. Finally, combining with specific...
The condition-based maintenance (CBM) technique has been widely used in the power plant in China. Feed water pump is one of the most important general requirements in the power plant. Its reliability plays an important part in the safety of the complete running. On the basis of practical situation in one power plant, a system for condition-based maintenance of the feed water pump in said power plant...
For the increasing demand on campus network, IPv6 (Internet protocol version 6) is going to replace the IPv4 protocol. IPv6 is playing an important role in many fields. Wireless sensor networks (WSNs) are undergoing rapid progress and attracted the attention of both the academic and the industrial research community in the last few years. This paper reports on the development of these protocols at...
According to the characteristics of GSM-R(Global System for Mobile Communications Railway), the Vehicular GSM-R Field Strength Testing System is required that the functions of receiving the data of GPS and displaying related geographic information that has processed and GSM-R field strength testing data situation on the electronic map. For these purposes, the implement program that geographic information...
In Service Oriented Architecture, Quality of Service (Qos) represents an important issue which is often considered when selecting and composing services. For receiving up-to-date information, non-functional properties can be continuously monitored using current methods. Because of the occurrence of monitoring at every time of service calling, the current methods imposes some overhead on the SOA. The...
For the sake of monitoring truck loading imbalance, a truck loading balance detection system based on TPMS (Tire Pressure Monitoring System) is developed. A judging module for loading balance is added in the TPMS processor, which can calculate the corresponding wheel load according to the change of tire pressure signals before and after loading, so that the balance of each wheel load sharing can be...
In order to reflect the actual deformation degree and trend of building structure and foundation pit, it was necessary to carry out the deformation measurement of subway construction and information management of construction monitoring. At the present moment, GIS had been applied in many fields but rare in analysis of deformation monitoring data. In this paper, GIS, with powerful capabilities of...
VoIP implementations are nowadays the preferred information technology alternative to public switched telephone networks. With dependence on this technology, VoIP quality and performance are critical. In this paper, we implement some commonly used VoIP CODECs on Windows desktop operating systems to evaluate their performance on two versions on IP, namely IPv4 and IPv6. Performance related metrics...
This paper discusses different aspects of performing monitoring in the context of software intensive systems. The focus is especially on cases where the observed system is distributed, and the monitoring system needs to be secure, dependable and capable to adapt to a number of dynamic scenarios during the system evolution. Based on analysis of monitoring needs in this type of a domain, a set of core...
Sensor node localization is a basic and key problem in sensor network work and management, and the self-localization of the sensor node is the basis for sensor network applications. This paper classifies and compares with several localization algorithms currently used, presents a node localization algorithm based on mobile anchor node, to reduce the communications and computing cost of the wireless...
This paper proposes a framework for consolidating laboratory data by adopting an Enterprise Service Bus as a backbone for interchanging laboratory data between: medical instruments, the Laboratory Information Management System and the Hospital Information System. A laboratory test result is one of the major components in medical diagnosis and procedures. It can be used to plan a patient's treatment...
Due to the fact that software systems cannot be tested exhaustively, software systems must cope with residual defects at run-time. Local recovery is an approach for recovering from errors, in which only the defective parts of the system are recovered while the other parts are kept operational. To be efficient, local recovery must be aware of which component is at fault. In this paper, we combine a...
Realizing integrated financial management in supply chain is an inevitable trend. The features which integrated financial system in supply chain should have are expounded. Conception reengineering, process reengineering and organizational reengineering is premise to realize integrated financial management in supply chain. A framework of integrated financial system in supply chain is presented, which...
On the basis of multiple costumer projects restricted each other in the requirements and resources for the software organizations with complex business workflows, presents an organizational lever requirement management process oriented to multi-projects and the information support system. In the process solutions are framed against the requirements from various customers by consultation and service...
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