Search

Your search keyword '"Tao, Li-Jun"' showing total 12 results
Start Over Author "Tao, Li-Jun" Publication Year Range Last 50 years
12 results on '"Tao, Li-Jun"'

2. Recognition of Radar Active Jamming Signal Based on Attention Mechanism

Author

Chen Tao, Li Jun, Wang Xiangyang, Huang Xiangsong

Subjects
attention mechanism, feature extraction, recognition of jamming, active jamming, rpn, radar signal, Motor vehicles. Aeronautics. Astronautics, TL1-4050
Abstract

Aiming at the problem that radar active jamming signal cannot be recognized effectively in complex background, a recognition algorithm of radar active jamming signal based on attention mechanism is proposed. Firstly, the time-frequency map of the interference signal is input into the feature extraction network to obtain the depth feature. Then, the attention mechanism is introduced to locate the location of interference signal through RPN network to get the region of interest. Finally, the type of interference signal is identified for the region of interest. The simulation results show that the algorithm can locate, recognize and separate jamming signals in complex background. Compared with convolution neural network, the training sample is reduced by half, and the training efficiency is improved. At the same time, the overall recognition accuracy is improved by 10%, which can reach 95%.

Published
2021
Full Text
View/download PDF

7. Predicting pressure ulcer risk with the modified Braden, Braden, and Norton scales in acute care hospitals in Mainland China

Author

Samantha M.C. Pang, Jacqueline S C Ho, Xue Shao-ling, Tao Li-jun, Enid Wai-yung Kwong, and Thomas K.S. Wong

Subjects
Adult, Male, Mainland China, Predictive validity, China, medicine.medical_specialty, Activities of daily living, Adolescent, Risk Assessment, Severity of Illness Index, Predictive Value of Tests, Risk Factors, Acute care, Activities of Daily Living, Severity of illness, medicine, Humans, Prospective Studies, Child, Prospective cohort study, Nursing Assessment, General Nursing, Aged, Aged, 80 and over, Observer Variation, Pressure Ulcer, Inpatients, Evidence-Based Medicine, business.industry, Incidence, Incidence (epidemiology), Middle Aged, Nursing Evaluation Research, Child, Preschool, Predictive value of tests, Acute Disease, Physical therapy, Female, Clinical Competence, business
Abstract

The aim of this study was to develop a modified Braden scale, to evaluate its predictive validity, and to identify a more valid pressure ulcer risk calculator for application in acute care hospitals in Mainland China among the modified Braden, Braden, and Norton scales. The initial modified Braden scale, with the addition of skin type and body build for height, was proposed in this study. Four hundred twenty-nine subjects who were admitted to two acute care hospitals in Mainland China within 24 hr and free of pressure ulcers upon admission were assessed with the initial modified Braden, Braden, and Norton scales by three nurse assessors. This was followed by a daily skin assessment to note any pressure ulcer by a nurse assessor. Nine subjects had pressure ulcers detected at Stages I (89%) and II (11%) after an average stay of 11 days. The descriptive analysis of each subscale scoring item in the initial modified Braden scale indicated that skin type and body build for height were the most distinct predictive factors whereas nutrition was the least distinct factor for predicting pressure ulcer development. Based on these findings, the modified Braden scale was further developed with the addition of skin type and body build for height and by exclusion of nutrition. The predictive validity test reported that the modified Braden scale demonstrated a better balance of sensitivity (89%) and specificity (75%) at a cutoff score of 16, with a higher positive predictive value (7%), than the Braden and Norton scales. This finding revealed that for this sample, the modified Braden scale is more effective in pressure ulcer risk prediction than the other two scales. Because the modified Braden scale is not 100% sensitive and specific, to increase clinical efficacy in the prevention of pressure ulcer, it is recommended that it be adopted combined with nursing judgment to predict pressure ulcer development in acute care settings in Mainland China.

Published
2005

10. Study on ramie/PP knitted composite interfacial.

Author

Tao Li-jun and Liu Xiao-hong

Subjects
RAMIE, KNITTING machines, LAMINATED materials, TEMPERATURE effect, TENSILE strength, MECHANICAL behavior of materials
Abstract

Samples of half-milano rib stitch were produced with ramie/PP on handed flat knitting machine, the guage was 12. Different pretreatment was used and composite was got by laminate molding process with the temperature 185 °C, molding pressure 10 MPa, holding time 10 min. Tensile and impact tests were carried out in the course and wale directions. The results showed that the concentration of 8% was the best when using NaOH solution, and the concentration of 2% also best while using CTAB-alcohol solution. [ABSTRACT FROM AUTHOR]

Published
2012

12. [Studies on analgesic effects and sites of oxymatrine-carbenoxolone sodium complex].

Author

Zhou JJ, Jiang YX, Jin SJ, Tao LJ, and Liu LJ

Subjects
Analgesics administration & dosage, Analgesics therapeutic use, Animals, Carbenoxolone administration & dosage, Carbenoxolone therapeutic use, Dose-Response Relationship, Drug, Female, Male, Mice, Mice, Inbred ICR, Pain drug therapy, Alkaloids chemistry, Analgesics chemistry, Analgesics pharmacology, Carbenoxolone chemistry, Carbenoxolone pharmacology, Quinolizines chemistry
Abstract

Objective: To study the analgesic effects and sites of oxymatrine-carbenoxolone sodium complex (OCSC)., Method: Adopting formalin test, warm water tail-flick test and intracerebroventricularly (icv) injection to observe the analgesic effects of OCSC in mice., Result: Intraperitoneally injecting (ip) OCSC (75, 150 mg x kg(-1)) remarkedly inhibited the pain of mice in the formalin test and prolonged latent phases of tail-shrinking of mice, icy OCSC (1.875, 3.75, 7.5 mg x kg(-1)) significantly prolonged latent phases of tail-shrinking of mice, it had dose-dependent effect with concentration., Conclusion: The result indicated that OCSC has obvious analgesic effects and its mechanism may be involved in central nervous system (CNS).

Published
2008

Catalog

Books, media, physical & digital resources
See catalog results