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In order to solve the problems of high handover delay, loss of interest packets and reduction of content hit rate caused by producer movement in naming data networks, a method of NDN Producer Regional Content Synchronization (NPRCS) based on ChronoSync protocol was proposed. In this method, the content of producers is synchronized to the cache of neighboring nodes in the process of producer movement to improve the availability of content after producer movement. Simulation results show that compared with the operating mechanism of NDN, the NPRCS method reduces the handover delay and retrieval time, and improves the consumer hit rate.

This paper proposes a fast detection method for mixed bad data in power systems based on long short-term memory networks to address the problems of low detection accuracy and poor detection efficiency. This method utilizes the powerful processing capability and memory characteristics of LSTM networks for time series data, effectively addressing issues such as data loss, data corruption, synchronization anomalies, and noise impact in complex environments of power systems. By constructing a dual-layer LSTM network architecture, mixed bad data in the power system can be filtered out. By further standardizing the processing and improving the specific detection process, the rapid and effective detection of mixed bad data in the power system has been achieved. Simulation and actual data verification show that this method can significantly improve the data quality of the power system, enhance the accuracy and efficiency of detecting mixed bad data in the power system, and provide solid data support for the safe and stable operation of the power system.

The ZPW-2000A track circuit’s limited low-frequency codes (18 types) constrain the train control system capacity. This study proposes code expansion via modulation coefficient optimization, adding four frequencies (8.1/9.2/30.1/31.2 Hz). Theoretical and simulation analyses confirm that the new codes maintain spectral consistency with existing standards, showing over 96% energy concentration for stable transmission. Hardware-software co-designed transceivers achieve secure detection of extended codes. Integrated with CTCS-3 systems, the technology reduces synchronization delay by 32%, shortens temporary speed restriction response time by 19%, and minimizes braking redundancy during communication failures. This advancement supports precision control in complex environments (e.g., Sichuan-Tibet Railway) and future ultra-high-speed systems.

OPC UA and MQTT are widely recognized key technologies for realizing the interconnection and intercommunication of industrial equipment as well as data transmission to the cloud. Based on OPC UA and MQTT, this paper presents a new method to solve the problem of multiple protocols coexistence and information islands in industry. Using the unified name ID to create mappings between OPC UA, MQTT and data acquisition drive, a shared database as data consistency communication medium to support concurrent data reading and writing of OPC UA and MQTT, a data acquisition drive as trigger to realize OPC UA and MQTT data synchronization update. Thus the difficulties of multi-protocol device integration and intercommunication and data uploading to the cloud can be tackled.

In a study published last month in The AstrophysicalJ ournal, scientists provide the most compelling evidence so far that a planet has this feature1, called tidal synchronization or 1:1 tidal locking. Compelling case \"This is the most compelling evidence one could possibly gather with currently existing information or instrumentation,\" says Emily Rauscher, a theoretical astrophysicist at the University of Michigan in Ann Arbor. Astronomer Emily Whittaker at the University of California, Los Angeles, notes that the paper assumes LHS 3844b has no atmosphere, but that a 2022 study they co-authored left room for a thin atmosphere3.

E-Czas Radio is a service for distributing official Polish time data using a long-wave AM broadcast transmitter operating at 225 kHz. Although the system is still being developed, it already offers the possibility of distributing time with accuracy exceeding the operator’s initial declarations. However, an independent assessment of the quality of time dissemination and the possible accuracy of end-user device synchronisation will be required to verify the system assumptions and estimate the system performance characteristics. Therefore, a set of measuring receivers for detecting time messages and measuring the message time of arrival has been built at the Gdansk University of Technology. This paper presents the proposed method for signal processing and message time detection, along with the results of preliminary tests on the quality of time and frequency sources used as references for the evaluation of e-Czas time data and the relative errors of message detection times between different receivers.

The transition in the dynamical behavior in the coupled system has several applications in science. The phase transitions of synchronization and oscillation suppression have both been thoroughly researched for a very long time. The second-order transition, which is continuous and reversible, is demonstrated by the standard results in the vast majority of cases in the coupled system. Recently, the first-order transitions reported in oscillation suppression have been reported in the complex network of the coupled oscillators through direct and indirect interaction. Explosive death is a transition that is not only abrupt but also irreversible in its parameters. We currently have a very good grasp of first order transition in oscillation death in networked systems and a variety of significant contributions and advancements have substantially improved it. Here, we aim to provide a review on the explosive death in various direct and indirect coupled oscillator scenarios while reviewing the previous findings.

Pulsed power technology plays a crucial role in the frontier fields. Its systems are evolving towards modularization and distribution, and high-precision synchronous triggering is required for the cooperation of multiple modules. Traditional centralized triggering systems can hardly meet the requirement of nanosecond-level global synchronization in complex scenarios. Moreover, the existing low-jitter triggering technologies also have many limitations, which have restricted the development of pulsed power systems towards higher energy levels. This article analyzes the mechanism of jitter generation in a distributed synchronous triggering system and constructs a mathematical model. The experiment conducted a significance test, with a normal distribution of 0.5 and an average distribution of 0.1457. So we verify the model through experimental analysis.

Higher-order networks have emerged as a powerful framework to model complex systems and their collective behavior. Going beyond pairwise interactions, they encode structured relations among arbitrary numbers of units through representations such as simplicial complexes and hypergraphs. So far, the choice between simplicial complexes and hypergraphs has often been motivated by technical convenience. Here, using synchronization as an example, we demonstrate that the effects of higher-order interactions are highly representation-dependent. In particular, higher-order interactions typically enhance synchronization in hypergraphs but have the opposite effect in simplicial complexes. We provide theoretical insight by linking the synchronizability of different hypergraph structures to (generalized) degree heterogeneity and cross-order degree correlation, which in turn influence a wide range of dynamical processes from contagion to diffusion. Our findings reveal the hidden impact of higher-order representations on collective dynamics, highlighting the importance of choosing appropriate representations when studying systems with nonpairwise interactions. Complex real-world networks with higher-order interactions can be described and analyzed using two types of representation, simplicial complexes and hypergraphs. The authors show that choice of representation is essential and demonstrate its impact on emerging collective dynamics in the network.