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基于融合特征以及卷积神经网络的环境声音分类系统研究 被引量:21
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作者 张科 苏雨 +2 位作者 王靖宇 王霰宇 张彦华 《西北工业大学学报》 EI CAS CSCD 北大核心 2020年第1期162-169,共8页
环境声音识别系统主要基于深度神经网络以及种类繁多的听觉特征对环境声音进行分类识别。分析基于深度神经网络的环境分类任务中,哪种听觉特征更适合环境声音识别系统十分必要。选择了基于2个广泛使用的滤波器:梅尔和Gammatone滤波器组... 环境声音识别系统主要基于深度神经网络以及种类繁多的听觉特征对环境声音进行分类识别。分析基于深度神经网络的环境分类任务中,哪种听觉特征更适合环境声音识别系统十分必要。选择了基于2个广泛使用的滤波器:梅尔和Gammatone滤波器组提取的3种声音特征。随后,提出了一个MFCC和GFCC融合的特征MGCC。最后采用文中提出的深度卷积神经网络来验证哪种特征更适合于环境声音的分类识别。实验结果表明,在基于神经网络的环境声音分类系统中,信号处理特征比频谱图特征的效果好,其中,MGCC特征具有比其他特征更好的性能。最后,用文中提出的MCC-CNN模型与其他环境声音分类模型在UrbanSound 8K数据集上进行了对比。实验结果表明,所提模型分类精度最好。 展开更多
关键词 环境声音 特征融合 声音分类 卷积神经网络
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Complete response in anaplastic lymphoma kinase–rearranged oncocytic thyroid cancer:A case report and review of literature
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作者 Victoire de Salins Gokoulakrichenane Loganadane +6 位作者 Charlotte Joly Mukedaisi Abulizi Maya Nourieh Hélène Boussion Yazid Belkacemi Christophe Tournigand Emmanuelle Kempf 《World Journal of Clinical Oncology》 CAS 2020年第7期495-503,共9页
BACKGROUND Oncocytic carcinoma of the thyroid is a rare disease,characterized by a poor prognosis and low response rate to radioiodine therapy.Crizotinib is a specific anaplastic lymphoma kinase(ALK)inhibitor,which wa... BACKGROUND Oncocytic carcinoma of the thyroid is a rare disease,characterized by a poor prognosis and low response rate to radioiodine therapy.Crizotinib is a specific anaplastic lymphoma kinase(ALK)inhibitor,which was initially developed in non-small cell lung cancer.Other solid tumors harboring a translocation in ALK have been described,such as renal carcinoma,thyroid,colorectal,ovarian cancers,and spitzoid melanoma.The research of ALK rearrangements in thyroid tumor is a promising therapeutic track,and treatments need to be explored.CASE SUMMARY We report the case of a 76-year-old woman with a history of multinodular goiter,who was hospitalized for impairment of her general condition.She was diagnosed with metastatic oncocytic thyroid cancer.Synchrone metastases were found:Multiple mediastinal lymphadenopathies,lytic bone lesions and bilateral mammary lumps.Fluorescence in situ hybridization analysis revealed an ALK rearrangement in 61%of cells.No other mutation was found.A tumor board discussion based on molecular characteristics of the tumor suggested initiating a daily treatment by crizotinib,a specific ALK inhibitor.A positron emission tomography scan performed 4 mo after the initiation of crizotinib showed a complete metabolic response.CONCLUSION This case highlights an unexpected efficacy of crizotinib in an ALK-rearranged thyroid tumor,and the need of further assessments. 展开更多
关键词 Oncocytic tumors of the thyroid Hürthle cell tumors CRIZOTINIB Precision MEDICINE Case report
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Matrix regeneration therapy:a solution to enhance healing in fungal keratitis
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作者 Siti Raihan Ishak Ahmad Nurfahmi Akhtar Ali +3 位作者 Hayati Abdul Aziz Mohtar Ibrahim Denis Barritault Wan Hazabbah Wan Hitam 《Journal of Coastal Life Medicine》 2014年第1期49-52,共4页
Corneal ulcers,especially of fungal origin,are a relatively common clinical entity within the spectrum of keratitis in tropical countries.The persistence of a non-healing epithelial defect is a known complication of t... Corneal ulcers,especially of fungal origin,are a relatively common clinical entity within the spectrum of keratitis in tropical countries.The persistence of a non-healing epithelial defect is a known complication of these ulcers.Despite advances in medical therapy,the management of this condition is still challenging.CACICOL20^(®)is a new ophthalmic matrix therapy that has been proved efficient as a corneal healing agent.To the best of our knowledge there have been reports of the limited use of matrix therapy in ocular healing,specifically in fungal keratitis.We report 2 cases of the efficacy of it as an adjuvant to topical amphotericin B in treating non-healing epithelial defects secondary to fungal corneal ulcers. 展开更多
关键词 Fungal ulcer Non healing epithelial defect Matrix regeneration therapy
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