检索结果-南通市图书馆

Multi-Distributed Speech Emotion Recognition Based on Mel Frequency Cepstogram and Parameter Transfer

Chinese Journal of Electronics 2022年第1期31卷 155-167页

作者： lin long TAN Liang School of Computer Science Sichuan Normal University Institute of Computing Technology Chinese Academy of Sciences

Speech emotion recognition(SER) is the use of speech signals to estimate the state of emotion. At present, machine learning is one of the main research methods of SER, the test and training data S of traditional machine learning all have the same distribution and feature space, but the data of speech is accessed from different environments and devices, with different distribution characteristics in real life. Thus, the traditional machine learning method is applied to the poor performance of SER. This paper proposes a multi-distributed SER method based on Mel frequency cepstogram(MFCC) and parameter transfer. The method is based on single-layer long short-term memory(LSTM), pre-trained inceptionv3 network and multi-distribution corpus. The speech pre-processed MFCC is taken as the input of single-layer LSTM, and input to the pre-trained inception-v3 *** features are extracted through the pre-trained inception-v3 model. Then the features are sent to the newly defined the fully connected layer and classification layer,let the parameters of the fully connected layer be finetuned, finally get the classification result. The experiment proves that the method can effectively complete the classification of multi-distribution speech emotions and is more effective than the traditional machine learning framework of SER.

关键词： multidistribution corpus fully connected layer feature extraction speech signals machine learning method pre-trained inception-v3 model multidistributed speech emotion recognition pre-trained inception-v3 network feature space recurrent neural nets Mel frequency cepstogram parameter transfer single-layer LSTM speech pre-processed MFCC learning (artificial intelligence) speech recognition emotion recognition multidistributed SER method multidistribution speech emotions

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Estimation of Oceanic Heat Flux Under Sea Ice in the Arctic Ocean

引用

Journal of Ocean University of China 2019年第3期18卷 605-614页

作者： lin long ZHAO Jinping College of Oceanic and Atmospheric Ocean University of China Qingdao 266100 China Key Laboratory of Physical Oceanography Ocean University of China Qingdao 266100 China

Oceanic heat flux(Fw) is the vertical heat flux that is transmitted to the base of sea ice. It is the main source of sea ice bottom melting. The residual method was adopted to study oceanic heat flux under sea ice. The data acquired by 28 ice mass balance buoys(IMBs) deployed over the period of 2004 to 2013 in the Arctic Ocean were used. Fw values presented striking seasonal and spatial variations. The average summer Fw values for the Canada Basin, Transpolar Drift, and Multiyear Ice area were 16.8, 7.7, and 5.9 W m^-2, respectively. The mean summer F-w for the whole Arctic was 10.1 W m^-2, which was equivalent to a bottom melt of 0.4 m. Fw showed an autumn peak in November in the presence of the near-surface temperature maximum(NSTM). The average Fw for October to December was 3.7 W m^-2. And the average Fw for January to March was 1.0 W m^-2, which was approximately one third of the average Fw in the presence of NSTM. The summer Fw was almost wholly attributed to the incident solar radiation that enters the upper ocean through leads and the open water. Fw calculated through the residual method using IMB data was compared with that calculated through the parameterization method using Autonomous Ocean Flux Buoy data. The results revealed that the Fw provided by the two methods were consistent when the sea ice concentration exceeded 70% and mixing layer temperature departure from freezing point was less than 0.15℃. Otherwise, the Fw yielded by the residual method was approximately one third smaller than that provided by the parameterization method.

关键词： Arctic Ocean oceanic heat flux residual method NSTM heat release

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanistic basis and clinical relevance of the role of transforming growth factor-β in cancer

引用

Cancer Biology & Medicine 2015年第4期12卷 385-393页

作者： Run-long lin Lu-Jun Zhao Department of Radiation Oncology Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy

Transforming growth factor-β(TGF-β) is a key factor in cancer development and progression. TGF-β can suppress tumorigenesis by inhibiting cell cycle progression and stimulating apoptosis in early stages of cancer progression. However, TGF-β can modulate cancer-related processes, such as cell invasion, distant metastasis, and microenvironment modification that may be used by cancer cells to their advantage in late stages. Corresponding mechanisms include angiogenesis promotion, anti-tumor immunity suppression, and epithelial-to-mesenchymal transition(EMT) induction. The correlation between TGF-β expression and cancer prognosis has also been extensively investigated. Results suggest that TGF-β pathway can be targeted to treat cancer; as such, the feasibility of this treatment is investigated in clinical trials.

关键词： Transforming growth factor-β(TGF-β) neoplasms prognosis therapeutics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of intraoperative radiotherapy for gastric carcinoma with D2 and D3 surgical resection

引用

World Journal of Gastroenterology 2006年第43期12卷 7033-7037页

作者： Huan-long Qin Chao-Hong lin Xiu-long Zhang Departmentof Surgery Shanghai Sixth People's Hospital Affiliated toShanghai Jiaotong University Shanghai 200233 China

AIM： TO study the proper sites and doses of intraoperative radiotherapy （IORT） for gastric carcinoma and the effects of this treatment. METHODS： A total of 106 patients with stage Ⅰ -Ⅳ gastric carcinoma who received D2 or D3 radical operation combined with IORT were analyzed. Sixty-seven patients with gastric cancer of the antrum and body underwent distal gastrectomy. The sites of irradiation were at the celiac artery and hepatoduodenal ligment area. Another 39 patients with carcinoma of the cardia and upper part of the gastric body and whole stomach underwent proximal gastrectomy or total gastrectomy. The sites of irradiation for this group were the upper margin of the pancreas and the regional para-aorta. The therapeutic effects （including survival and complications） of these 106 cases received operation combined with IORT （IORT group） were compared with 441 cases treated during the same time period by a radical operation alone （operation group）. RESULTS： The radiation dose below 30 Gy was safe. The therapeutic method of the operation combined with IORT did not prolong the survival of patients with stage Ⅰ and Ⅳ gastric cancer, but the 5-year survival rates of patients with stage Ⅱ and Ⅲ gastric cancers were significantly improved. The 5-year survival rates of the stages Ⅲ cancer patients receiving D2 resection combined with IORT were markedly improved, while for those receiving D3 radical resection, only the postoperative 3- or 4-year survival rates were improved （P 〈 0.005-0.001）. The 5-year survival rate for those patients was raised only by 4.7% （P 〉 0.05）. CONCLUSION： The 5-year survival rates of patients with stages Ⅱ and Ⅲ gastric carcinoma who received D2 lymphadenectomy combined with IORT were improved, and there was no influence on the postoperative complications and mortality.

关键词： Gastric carcinoma Intraoperative radiotherapy Surgical resection

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Modeling Method for Flexible Energy Behaviors in CNC Machining Systems

引用

Chinese Journal of Mechanical Engineering 2018年第1期31卷 156-166页

作者： Yu-Feng Li Yu-lin Wang Yan He Yan Wang Shen-long lin Economics and Business Administration Chongqing University State Key Laboratory of Mechanical Transmission Chongqing University School of Mechanical Engineering Nanjing University of Science and Technology Department of Computing Mathematics and Engineering University of Brighton

CNC machining systems are inevitably confronted with frequent changes in energy behaviors because they are widely used to perform various machining tasks. It is a challenge to understand and analyze the flexible energy behaviors in CNC machining systems. A method to model flexible energy behaviors in CNC machining systems based on hierarchical objected-oriented Petri net(HOONet) is proposed. The structure of the HOONet is constructed of a high-level model and detail models. The former is used to model operational states for CNC machining systems, and the latter is used to analyze the component models for operational states. The machining parameters having great impacts on energy behaviors in CNC machining systems are declared with the data dictionary in HOONet models. A case study based on a CNC lathe is presented to demonstrate the proposed modeling method. The results show that it is effective for modeling flexible energy behaviors and providing a fine-grained description to quantitatively analyze the energy consumption of CNC machining systems.

关键词： Energy behaviors CNC machining systems Modeling method HOONet

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanism of ferromagnetism in(Fe,Co)-codoped 4H-SiC from density functional theory

引用

Communications in Theoretical Physics 2020年第5期72卷 78-84页

作者： Bing Zhang Jing-Tao Huang long lin Yong-Hao Xu Hua-long Tao Yellow River Conservancy Technical Institute Kaifeng 475001China Cultivating Base for Key Laboratory of Environment-Friendly Inorganic Materials in Henan Province School of Materials Science and EngineeringHenan Polytechnic UniversityJiaozuo 454000China School of Physics and Electronic Information Engineering Henan Polytechnic UniversityJiaozuo 454000China Liaoning Key Materials Laboratory for Railway School of Materials Science and EngineeringDalian Jiaotong UniversityDalian 116028Liaoning ProvinceChina

First-principles calculations are performed to investigate the electronic structures and magnetic properties of(Fe,Co)-codoped 4H-SiC using the generalized gradient approximation plus Hubbard U *** find that 4H-SiC doped with an isolated Fe atom and an isolated Co atom produces a total magnetic moment of 5.98μB and 6.00μB *** estimate TC of about 263.1 K for the(Fe,Co)-codoped 4H-SiC *** study ferromagnetic and antiferromagnetic coupling in(Fe,Co)-codoped *** behavior is *** strong ferromagnetic couplings between local magnetic moments can be attributed to p–d hybridization between Fe,Co and neighboring ***,the(Fe,Co,V(Si))-codoped 4H-SiC system shows antiferromagnetic coupling when an Si vacancy is introduced in the same 4H-SiC *** results may be helpful for further study on transition metal-codoped systems.

关键词： rst principles dilute magnetic semiconductors electronic structures magnetic properties 4H-SiC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Discovering Cohesive Temporal Subgraphs with Temporal Density Aware Exploration

引用

Journal of Computer Science & Technology 2022年第5期37卷 1068-1085页

作者： Chun-Xue Zhu long-long lin Ping-Peng Yuan Hai Jin National Engineering Research Center for Big Data Technology and System Huazhong University of Science and TechnologyWuhan 430074China Service Computing Technology and System Laboratory Huazhong University of Science and TechnologyWuhan 430074China Cluster and Grid Computing Laboratory Huazhong University of Science and TechnologyWuhan 430074China School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China

Real-world networks,such as social networks,cryptocurrency networks,and e-commerce networks,always have occurrence time of interactions between *** networks are typically modeled as temporal *** cohesive subgraphs from temporal graphs is practical and essential in numerous data mining applications,since mining cohesive subgraphs gets insights into the time-varying nature of temporal ***,existing studies on mining cohesive subgraphs,such as Densest-Exact and k-truss,are mainly tailored for static graphs(whose edges have no temporal information).Therefore,those cohesive subgraph models cannot indicate both the temporal and the structural characteristics of *** this end,we explore the model of cohesive temporal subgraphs by incorporating both the evolving and the structural characteristics of temporal ***,the volume of time intervals in a temporal network is *** a result,the time complexity of mining temporal cohesive subgraphs is *** efficiently address the problem,we first mine the temporal density distribution of temporal *** by the distribution,we can safely prune many unqualified time intervals with the linear time ***,the remaining time intervals where cohesive temporal subgraphs fall in are examined using the greedy *** results of the experiments on nine real-world temporal graphs indicate that our model outperforms state-of-the-art solutions in efficiency and ***,our model only takes less than two minutes on a million-vertex DBLP and has the highest overall average ranking in EDB and TC metrics.

关键词： temporal network temporal feature distribution cohesive subgraph convex property

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An efficient and surface-benign purification scheme for colloidal nanocrystals based on quantitative assessment

引用

Nano Research 2015年第10期8卷 3353-3364页

作者： Yu Yang Jiongzhao Li long lin Xiaogang Peng CenterforChemistryofNovel&High-PerformanceMaterials DepartmentofChemistryZhejiangUniversityHangzhou310027China

General application of ＂greener methods＂ to the synthesis of monodisperse colloidal nanocrystals introduces impurities, including metal carboxylate precursors, non-volatile solvents, free ligands, and non-nanocrystalline side products. These impurities seriously diminish the solution processability and potential applications of colloidal nanocrystals. A protocol was established for evaluating purification schemes. The results revealed that commonly applied purification schemes and their variants do not exhibit a high level of performance and may degrade the ligand surface coverage. A new scheme involving chloroformacetonitrile precipitation quantitatively removed all impurities from colloidal solutions of CdSe and CdS nanocrystals coated with a variety of carboxylate ligands. The new scheme was benign to the surface structure of nanocrystaMigands complexes and resulted in each nanocrystal bearing a close-packed monolayer of carboxylate ligands.

关键词： colloidal nanocrystals purification metal carboxylates ligands chloroform-acetonitrile

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Relationship between dietary niacin intake and erectile dysfunction:a population-based study

引用

Asian Journal of Andrology 2024年第4期26卷 382-388页

作者： Wei-long lin Cheng Zheng Hao-Xu Wang Wei Zhang Ming-En lin Department of Urology The First Affiliated Hospital of Shantou University Medical CollegeMedical College of Shantou UniversityShantou 515041China The Second School of Clinical Medicine Southern Medical UniversityGuangzhou 510260China.

Existing research on the precise link between dietary niacin intake and erectile dysfunction(ED)is ***,this study aimed to investigate the potential association between dietary niacin intake and the risk of *** logistic regression and restricted cubic splines(RCSs)were used to examine the relationship between dietary niacin intake and *** interaction analysis was performed to assess the impact of different subgroups on the study *** addition,1:1 propensity score matching(PSM)was employed to adjust for potential confounding factors,ensuring the reliability of the *** analyzed data were collected from the 2001–2004 National Health and Nutrition Examination Survey(NHANES)in the *** study encompassed 3184 adults,among whom 863 participants were identified as having *** adjustments for potential confounders,the findings revealed that higher niacin intake,specifically in the highest tertile,was associated with a decreased risk of ED compared to that in the lowest tertile,showing an odds ratio(OR)of 0.56(95%confidence interval[CI]:0.37–0.85).Analysis of dose–response curves illustrated a negative correlation between dietary niacin intake and the risk of *** and interaction analyses fortified the consistency of these ***,PSM corroborated the validity of the *** study suggests an inverse association between dietary niacin intake and the risk of ***,establishing a cause-and-effect relationship remains elusive,and defining the safe threshold of niacin intake to prevent ED requires further investigation.

关键词： dietary niacin erectile dysfunction National Health and Nutrition Examination Survey propensity score matching

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

城市非正规性空间视角下的老旧社区更新策略研究——以南昌市省府社区为例

引用

城市建筑 2025年第1期22卷 85-87页

作者：郑芷奇宋靖华林龙南昌工学院建筑与环境工程学院武汉大学城市设计学院江西省建筑设计研究总院创作中心

快速的城镇化发展导致土地利用的矛盾进一步加深,引发了大量居民自下而上、自发性的行为活动,并随之形成诸多非正规性空间,成为目前社区更新工作中的难点。因此,文章从非正规性空间的视角出发,总结城市社区中非正规性空间的基本特征、... 详细信息

快速的城镇化发展导致土地利用的矛盾进一步加深,引发了大量居民自下而上、自发性的行为活动,并随之形成诸多非正规性空间,成为目前社区更新工作中的难点。因此,文章从非正规性空间的视角出发,总结城市社区中非正规性空间的基本特征、使用模式、空间特性及内在逻辑等,结合南昌市省府社区实例,提出原址保留、功能复合、公众参与、分时控制等改造策略,以期为后续的社区营造与更新工作提供参考。

关键词：非正规性空间老旧社区社区改造城市更新

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：