卷 7 ， 期 2 ， 2024
- 摘要：With the deteriorating space environment, space launch missions are facing an increasing risk of collision between space targets and spacecraft. A collision warning model between ballistic missiles and space targets is established to analyze the safety analysis of spacecraft launch windows in space launch missions. A safety analysis method for ballistic missile launch windows based on edge region detection is proposed, and the safety of space targets on ballistic missile launch windows is analyzed through simulation data. The simulation results show that this method can achieve safety analysis of ballistic missile launch windows, calculate space targets and rendezvous parameters that pose potential threats to ballistic missile space flight safety, and provide theoretical support for ballistic missile launch window selection and flight safety warning.关键词：ballistic missile;spatial target;collision warning;analysis of launch window;two line element11|3|0更新时间：2025-04-02
- 摘要：This study aimed to enhance the accuracy of risk prediction for intracranial aneurysm patients through the use of the Outlier-SMOTE algorithm and the FOA-SVM model. First, a data set integrating morphological and hemodynamic features is constructed using morphological and hemodynamic indicators. Subsequently, the original data set is resampled using the Outlier-SMOTE, SMOTE, and ADASYN algorithms to balance the minority class samples. Experimental results indicate that the FOA-SVM performed optimally in predicting both positive and negative cases on the data set constructed by the Outlier-SMOTE algorithm. The study successfully predicte the risk of intracranial aneurysm patients through the Outlier-SMOTE algorithm and the FOA-SVM model. The experimental results demonstrate that the Outlier-SMOTE algorithm excelled in balancing the data set and improving the classification performance of the FOA-SVM, providing robust support for clinical diagnosis and treatment.关键词：AdaBoost;SMOTE;intracranial aneurysm;Rupture Risk;predictive model13|3|0更新时间：2025-04-02
- 摘要：The information received by faculty, staff and students in colleges and universities often comes from different departments and different management systems. The sources of information and the channels of information transmission are diversified. In the era of data explosion, it has become more difficult for faculty, staff and students to obtain the information they need in time. Therefore, an information push system in colleges and universities based on cross-domain recommendation is proposed. It establishes a cross-domain recommendation model that integrates information from various departments and their management systems within colleges and universities. Utilizing historical interaction data between faculty, staff, students, and various information and resources, the system aims to discover their intra-domain and cross-domain needs, habits, and interest preferences. It actively provides comprehensive and personalized cross-domain information push services for them, effectively enhancing the recommendation effect.关键词：colleges and universities;big data;recommender system;cross-domain recommendation;information push system11|6|0更新时间：2025-04-02
- 摘要：To address the engineering requirements of radar data processing simulation and design, this paper introduces an airplane target trajectory simulation method based on state transition calculation. This method is primarily suitable for linear motion and uniform circular motion during constant altitude cruise. Special processing has been applied for constant altitude cruise scenarios, and the method only requires the initial geographic coordinates and control parameters for each flight stage to sequentially generate more complex comprehensive motion scenarios based on the combination of two basic movements. To validate the effectiveness of the proposed method, this paper constructs long-range scenarios and complex maneuvering scenarios. The simulation results demonstrate that the proposed method can easily generate relatively complex flight trajectories, laying a solid foundation for the debugging and analysis of trajectory tracking filtering methods in radar data processing.关键词：radar;trajectory simulation;data processing;airplane target14|12|0更新时间：2025-04-02
RESEARCH PAPER
- 摘要：With the continuous development of heavy haul railways, traditional ground-based monitoring systems and track inspection methods relying on dedicated inspection vehicles have gradually revealed their limitations. To meet modern operational maintenance requirements, deploying onboard monitoring systems in freight wagons and establishing real-time vehicle-to-ground (V2G) data transmission channels to ground monitoring centers has become a crucial direction for enhancing railway safety and operational efficiency. Against this background, this paper designs and implements a centralized V2G communication platform utilizing commercial mobile communication networks. Serving as the communication hub for onboard monitoring systems, the platform enables unified management and control of data transmission processes. To address frequent network interruptions along heavy haul railway lines, a breakpoint continuation transmission method based on packet segmentation is proposed to ensure data continuity and integrity. Furthermore, a service-prioritized data transmission strategy is developed to adapt to low-speed sections and manage sudden data surges, optimizing service quality for efficient and stable data transfer. Developed using the QT framework, the communication platform has been installed in onboard subsystems and functionally validated. Experimental results demonstrate that the implemented centralized communication platform fully satisfies all functional requirements of heavy haul freight wagon monitoring systems, significantly contributing to enhanced railway safety and operational efficiency.关键词：vehicle-to-ground communication platform;onboard monitoring system;network communication;heavy haul railway;chunked transfer;QT137|287|0更新时间：2025-04-02
- 摘要：In the digital signature process, the signature private key is usually stored in the user's terminal, which is easily attacked by malicious users, resulting in the leakage of the key and then forging the digital signature. In order to reduce the risk of signature key leakage, this paper proposes a distributed SM2 digital signature scheme. The scheme requires both parties to store their signature private keys in a distributed manner, and the complete signature public and private keys are generated through interaction between the two parties, and neither party has the ability to derive the whole signature key, compared with existing schemes, this scheme has high efficiency in collaborative signature and is suitable for lightweight application scenarios. At the same time, in terms of security, the signature process of this scheme requires the collaboration of both communication parties, and neither party has the ability to recover the complete private key and output the signature, effectively reducing the risk of key leakage. In terms of resource overhead, this scheme has obvious efficiency advantages in the key negotiation and collaborative signature stages. Compared with the original SM2 signature, it has similar performance when processing small data, and the time-consuming increases when processing large data, but the gap narrows as the data volume increases, and the resource overhead has advantages.关键词：SM2;key splitting;digital signature;two-party collaborative signature8|7|0更新时间：2025-04-02
- 摘要：Industrial big data is one of the core supports of Industry 4.0, which can bring significant upgrades and optimizations to modern industrial production and management processes. The aggregation and transmission of industry data provide a fundamental approach for the formation of industry big data, and are key to leveraging the value of industrial data and achieving innovative development in the industrial internet. Based on research on the industrial internet identifier resolution system and industrial data sharing technology, a system for industrial data aggregation and transmission based on the "Unique ID" identifier has been proposed. By using unified coding—"Unique ID" and data templates to form data assets of ship products, ship products are associated with the Unique ID identifier in the corresponding data assets, forming the aggregation of all relevant data assets throughout the entire lifecycle of ship products, realizing the transmission of value in the data chain.关键词：Unique ID;data share;lifecycle data of ship products;industrial internet;industrial internet identifier;product data model17|8|0更新时间：2025-04-02
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