Three-phase sudden short-circuit at the terminals of a synchronous machine under open circuit condition is simulated. The standard parameters are calculated by using the known parameters, and substituted into the anal...
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Three-phase sudden short-circuit at the terminals of a synchronous machine under open circuit condition is simulated. The standard parameters are calculated by using the known parameters, and substituted into the analytical expression for computing short-circuit current. The curve of the relationship between the maximal armature momentary current and the rotor angle is plot. It is concluded that the armature momentary current is maximal when short-circuit occurring at the time of the terminal voltage wave is going through zero. Furthermore, a simulation model in SIMULINK environment is constructed, thus the oscillograms of the armature short-circuit currents in the three phases and the field short-circuit current are plot.
The integration of Internet of Things (IoT) technology into transportation systems holds immense potential to transform the way we move people and goods, offering benefits such as increased efficiency, reduced emissio...
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ISBN:
(数字)9798350383997
ISBN:
(纸本)9798350384000
The integration of Internet of Things (IoT) technology into transportation systems holds immense potential to transform the way we move people and goods, offering benefits such as increased efficiency, reduced emissions, improved safety, and enhanced user experience. With the ubiquitous and high-speed connectivity, sixth-generation (6G) technology is envisaged to make unprecedented revolutions in several fields and applications including IoT applications and transportation systems. The convergence of 6G networks with these applications will provide seamless connectivity and help to integrate functionalities such as sensing, communication, and computing, resulting in superior service quality. However, the IoT network is highly vulnerable to cyber-attacks. With the recent developments in quantum computers and quantum algorithms, it is important to make them secure from quantum attacks as well. In this paper, we propose a quantum-safe authentication protocol using a Post-Quantum Key Encapsulation Mechanism (PQKEM) for IoT applications in transportation systems. The protocol is built using CRYSTALS-Kyber, a lattice-based PQKEM, selected by the National Institute of Standards and Technology (NIST) in round 3 of the post-quantum standardization process. We provide a formal security proof of the proposed authentication protocol using the Real-Or-Random (RoR) model. We also present a performance analysis of the proposed authentication protocol.
The network programming model of the Segment Routing (SRv6) architecture offers the possibility to define new functions aiming at improving the network performance. In this paper we introduce SRv6 Live-Live, a new beh...
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ISBN:
(数字)9798350327939
ISBN:
(纸本)9798350327946
The network programming model of the Segment Routing (SRv6) architecture offers the possibility to define new functions aiming at improving the network performance. In this paper we introduce SRv6 Live-Live, a new behavior for the SRv6 data plane. SRv6 Live-Live is based on two primitives: i) traffic duplication, performed at the ingress node, and ii) the traffic de-duplication, executed at the egress node. The proposed behavior is suitable for the service provisioning of traffic flows having stringent requirements in terms of reliability, low delay and high throughput. Our preliminary performance evaluation, conducted in an emulated environment and realized by using a prototype implementation based on P4, shows that SRv6 Live-Live enhances the performance of the selected traffic flows in challenging network scenarios, characterized by high level of packet corruption/loss and large values of bandwidth-delay products.
Sponges are the richest resources of marine natural *** the past decades, much attention has been paid on frnding novel sponge-derived compounds and examining their potential pharmacological activities[1].Although man...
Sponges are the richest resources of marine natural *** the past decades, much attention has been paid on frnding novel sponge-derived compounds and examining their potential pharmacological activities[1].Although many sponge-derived compounds are excellent drug candidates, wild harvest of sponges is insufficient to supply the bioactive compounds in quantity for clinical researches and commercial demands.
There is an increasing demand to develop higher performance P/M stainless steel parts. In this respect, one of the methods used to improve the performance of P/M stainless steel is to carry out sintering with admixed ...
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Increasing the rate of residential buildings is a global trend that will intensify the energy use growth substantially. This fact has spurred significant improvements in the efficiency of the buildings' mechanical...
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ISBN:
(纸本)9781955516068
Increasing the rate of residential buildings is a global trend that will intensify the energy use growth substantially. This fact has spurred significant improvements in the efficiency of the buildings' mechanical systems technologies. However, few studies have addressed single-family house designs in as much detail as commercial-scale projects. Another priority that is overdue for examination is to include detailed analyses of the local climate effects to which houses should be designed to adapt. This paper includes a detailed analysis of a vernacular architecture passive element that potentially can mitigate the heat load of very hot-dry climates. This analysis is part of a broader study that looks to evaluate how modern design can integrate such elements in modern architecture. Architectural elements that traditionally have been used in different regions in the world, such as a rowshan - a type of protruding window surrounded by carved wood latticework - can still be included in modern design to both reduce the cooling loads and improve the indoor environment. The passive element geometry analysis included six sized variations of the aperture elements with a rectangular shape. The CFD simulation analysis of the passive element geometry found that the miniature opening sizes with rowshans performed better to keep the air temperature and airflow acceptable. The results also revealed improved thermal comfort conditions regarding inside space airspeed and lowered indoor air temperatures. Lowering the house's temperature also is reflected in the cooling energy requirements, particularly in the daytime from November to March;the ranges of daily average indoor temperature and relative humidity were reduced significantly (similar to 15% to 30%). These results offer opportunities to establish housing criteria for improving thermal performance, leading to a path for sustainability and affordability while providing a high standard of living for limited-income people.
At present, over 90% of the medicinal materials in the Taiwan medicinal material market are imported from the mainland. So the topic of how to make sure the medicinal materials from different areas are harmless to peo...
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ISBN:
(纸本)9783642284656
At present, over 90% of the medicinal materials in the Taiwan medicinal material market are imported from the mainland. So the topic of how to make sure the medicinal materials from different areas are harmless to people's health is worthy of exploration and it is also a challenge in the safety evaluation of the medicinal materials in the future. This research proposes the planning concept of realizing the electrification of the medicinal value chain to make the information public. In this way, not only the needed time for customs clearance will be shortened, but also the domestic medicinal material buyers will know the testing results and the delivery conditions of the medicinal materials at any time. Only the safe raw materials can make people feel ease at using the imported medicinal materials. This research applies the production records to the medicinal value chain to effectively provide clear and traceable message mars. The consumers can buy the guaranteed medicinal materials and avoid buying the unsafe medicinal materials. How to construct a medicinal material security inspection information platform and to ensure its benefits is a very important topic. This research wants to plan a medicinal material security inspection information platform, by which the quality can be guaranteed and the delivery time will be reduced, to make the consumers buy and eat the medicines securely and further build the brand of Taiwan excellent medicinal materials.
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