Analysis of the imaging and clinical features of subsolid pulmonary nodules in stage IA non-small cell lung cancer

The subsolid pulmonary nodules (SSPNs) in the imaging diagnosis of stage IA non-small cell lung cancer (NSCLC) is very important since they are closely related to early lung cancer. The CT imaging and pathology data of 230 patients with solitary pulmonary nodules (SPNs) who underwent thoracoscopic treatment at Guizhou Provincial People’s Hospital between July 2021 and June 2022 were collected. Based on postoperative pathology, the patients were divided into a benign group and a stage IA NSCLC group. The imaging and clinical features of SPNs in stage IA NSCLC were analysed. A total of 230 patients with SPNs were enrolled. There were 146 cases of SSPNs (including 34 cases of pure ground-glass opacities (pGGOs) and 112 cases of mixed GGOs (mGGOs)), and the incidence rate was significantly higher in the stage IA NSCLC group than in the benign group [96.7% (146/151) vs. 74.7% (59/79), P<0.05]. The overall malignancy rate of subsolid nodules was 71.2% (146/205); the malignancy rate of mGGO lesions was higher (75.2%) than that of pGGO lesions (60.7%) and solid nodules (20%). Malignant subsolid nodules mostly occurred in middle-aged women, mostly in the upper lobe of the lungs, with unclear edges and lobular signs, and accompanied by spur signs and pleural indentation signs (P<0.05). SSPNs are an important sign of lung cancer, and mGGO lesions have the highest malignant tendency. CT imaging findings such as unclear lesion edges, lobular signs, and pleural indentation signs are important for determining benign and malignant SSPNs. CT imaging manifestations are helpful for correctly assessing the nature of early SSPNs so that patients can receive timely and effective treatment

Design and Electromagnetic Analysis of a HTS Linear Synchronous Motor

High temperature superconducting (HTS) linear synchronous motor (LSM) integrated with HTS magnetic levitation system, can realize self-levitation and self-guidance without any sliding friction, which will have important applications in many fields such as electromagnetic aircraft launch system, maglev transportation. This paper presents the design and electromagnetic analysis of a HTS LSM, which is levitated by a magnetic levitation system consisting of HTS bulkspermanent magnet (PM) guideways. Numerical analysis and magnetic field finite element analysis (FEA) methods are applied to analyze the thrust, levitation and guidance force characteristics, and the electromagnetic performance of HTS LSM under no-load and load situations are studied with the analysis results are given. Finally, the primary motor running testing results are provided

Mobilizing Personalized Federated Learning in Infrastructure-Less and Heterogeneous Environments via Random Walk Stochastic ADMM

This paper explores the challenges of implementing Federated Learning (FL) in practical scenarios featuring isolated nodes with data heterogeneity, which can only be connected to the server through wireless links in an infrastructure-less environment. To overcome these challenges, we propose a novel mobilizing personalized FL approach, which aims to facilitate mobility and resilience. Specifically, we develop a novel optimization algorithm called Random Walk Stochastic Alternating Direction Method of Multipliers (RWSADMM). RWSADMM capitalizes on the server's random movement toward clients and formulates local proximity among their adjacent clients based on hard inequality constraints rather than requiring consensus updates or introducing bias via regularization methods. To mitigate the computational burden on the clients, an efficient stochastic solver of the approximated optimization problem is designed in RWSADMM, which provably converges to the stationary point almost surely in expectation. Our theoretical and empirical results demonstrate the provable fast convergence and substantial accuracy improvements achieved by RWSADMM compared to baseline methods, along with its benefits of reduced communication costs and enhanced scalability.Comment: 28 pages, 7 figures, 3 tables, 1 algorithm. Proof details are provided in the main body of the pape

Characteristics and Optimization of a PMLSM for HTS Magnetic Suspension Propulsion System

¾Permanent magnet (PM) linear synchronous motors (PMLSMs) can be integrated with a high temperature superconducting (HTS) magnetic suspension system to be used in such as electromagnetic aircraft launcher and maglev transportation which have a levitated object moving on a long linear track. This paper presents the design and electromagnetic characteristic analysis of a long-primary single-sided PMLSM for a HTS bulk-PM guideway repulsion magnetic suspension propulsion system. Based on the characteristics and performance analysis of the PMLSM, a new type of HTS suspension propulsion system driven by a double-sided PMLSM with an optimal PM structure is then proposed. The running characteristics of the linear propulsion systems are studied through finite element analysis (FEA) with comprehensive performance results obtained for practical development

Investigation on Combination of Airflow Disturbance and Sprinkler Irrigation for Horticultural Crop Frost Protection

Frost tends to be detrimental to the growth and development of horticultural crops, leading to yield or quality reduction with sizable economic losses. Therefore, it is very important to develop frost protection technology for horticultural crops. In this study, the development of frost protection technology is reviewed, and the research of mechanized frost protection technology in recent years is analyzed. In view of the poor frost protection effect of some single mechanized frost protection technology, the combination frost protection technology is put forward. The combination frost protection technology with airflow disturbance and sprinkler irrigation is discussed and analyzed