Electronic Research Archive最新文献_第10页

Probability of disease extinction and outbreak in a stochastic tuberculosis model with fast-slow progression and relapse 快速-缓慢进展和复发的随机结核模型中疾病消失和爆发的概率

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023360

Tao Zhang, Mengjuan Wu, Chunjie Gao, Yingdan Wang, Lei Wang

引用次数: 0

A multi-objective optimization model for green demand responsive airport shuttle scheduling with a stop location problem 考虑停站位置问题的绿色需求响应机场班车调度多目标优化模型

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023322

Ming Wei, Congxin Yang, Bo Sun, Binbin Jing

引用次数: 0

Second-order time integrators with the Fourier spectral method in application to multidimensional space-fractional FitzHugh-Nagumo model 二阶时间积分法在多维空间分数型FitzHugh-Nagumo模型中的应用

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023369

Harish Bhatt

引用次数: 0

Fourth power mean values of one kind special Kloosterman's sum 一类特殊的Kloosterman和的四次方均值

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023326

Li Rui, Nilanjan Bag

引用次数: 0

Dynamic analysis of a delayed differential equation for Tropidothorax elegans pests 长三角胸害虫

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023352

Tingru Yang, Yuting Ding

引用次数: 0

A survey of generative adversarial networks and their application in text-to-image synthesis 生成对抗网络及其在文本到图像合成中的应用综述

4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023362

Wu Zeng, Heng-liang Zhu, Chuan Lin, Zheng-ying Xiao

{"title":"A survey of generative adversarial networks and their application in text-to-image synthesis","authors":"Wu Zeng, Heng-liang Zhu, Chuan Lin, Zheng-ying Xiao","doi":"10.3934/era.2023362","DOIUrl":"https://doi.org/10.3934/era.2023362","url":null,"abstract":"<abstract>With the continuous development of science and technology (especially computational devices with powerful computing capabilities), the image generation technology based on deep learning has also made significant achievements. Most cross-modal technologies based on deep learning can generate information from text into images, which has become a hot topic of current research. Text-to-image (T2I) synthesis technology has applications in multiple fields of computer vision, such as image enhancement, artificial intelligence painting, games and virtual reality. The T2I generation technology using generative adversarial networks can generate more realistic and diverse images, but there are also some shortcomings and challenges, such as difficulty in generating complex backgrounds. This review will be introduced in the following order. First, we introduce the basic principles and architecture of basic and classic generative adversarial networks (GANs). Second, this review categorizes T2I synthesis methods into four main categories. There are methods based on semantic enhancement, methods based on progressive structure, methods based on attention and methods based on introducing additional signals. We have chosen some of the classic and latest T2I methods for introduction and explain their main advantages and shortcomings. Third, we explain the basic dataset and evaluation indicators in the T2I field. Finally, prospects for future research directions are discussed. This review provides a systematic introduction to the basic GAN method and the T2I method based on it, which can serve as a reference for researchers.</abstract>","PeriodicalId":48554,"journal":{"name":"Electronic Research Archive","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in public travel willingness in the post-COVID-19 era: Evidence from social network data 后新冠肺炎时代公众出行意愿的变化:来自社交网络数据的证据

IF 0.8 4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023187

Yazao Yang, Haodong Tang, Tangzheng Weng

{"title":"Changes in public travel willingness in the post-COVID-19 era: Evidence from social network data","authors":"Yazao Yang, Haodong Tang, Tangzheng Weng","doi":"10.3934/era.2023187","DOIUrl":"https://doi.org/10.3934/era.2023187","url":null,"abstract":"Amid the impact of COVID-19, the public's willingness to travel has changed, which has had a fundamental impact on the ridership of urban public transport. Usually, travel willingness is mainly analyzed by questionnaire survey, but it needs to reflect the accurate psychological perception of the public entirely. Based on Weibo text data, this paper used natural language processing technology to quantify the public's willingness to travel in the post-COVID-19 era. First, web crawler technology was used to collect microblog text data, which will discuss COVID-19 and travel at the same time. Then, based on the Naive Bayes classification algorithm, travel sentiment analysis was carried out on the data, and the relationship between public travel willingness and urban public transport ridership was analyzed by Spearman correlation analysis. Finally, the LDA topic model was used to conduct content topic research on microblog text data during and after COVID-19. The results showed that the mean values of compelling travel emotion were -0.8197 and -0.0640 during and after COVID-19, respectively. The willingness of the public to travel directly affects the ridership of urban public transport. Compared with the COVID-19 period, the public's fear of travel infection in the post-COVID-19 era has significantly improved, but it still exists. The public pays more attention to the level of COVID-19 prevention and control and the length of travel time on public transport.","PeriodicalId":48554,"journal":{"name":"Electronic Research Archive","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70245735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Positive solutions for fractional iterative functional differential equation with a convection term 带对流项的分数阶迭代泛函微分方程的正解

IF 0.8 4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023096

Qingcong Song, Xinan Hao

引用次数: 1

Spatiotemporal patterns and multiple bifurcations of a reaction- diffusion model for hair follicle spacing 毛囊间距反应扩散模型的时空模式和多重分岔

IF 0.8 4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023099

Zhili Zhang, A. Wan, Hongyan Lin

引用次数: 0

Investigation on dynamic response and compaction degree characterization of multi-layer asphalt pavement under vibration rolling 振动碾压下多层沥青路面动力响应及压实度特性研究

IF 0.8 4区数学

Electronic Research Archive Pub Date : 2023-01-01 DOI: 10.3934/era.2023114

Hongyu Shan, H. Dan, Shiping Wang, Zhi Zhang, Renkun Zhang

{"title":"Investigation on dynamic response and compaction degree characterization of multi-layer asphalt pavement under vibration rolling","authors":"Hongyu Shan, H. Dan, Shiping Wang, Zhi Zhang, Renkun Zhang","doi":"10.3934/era.2023114","DOIUrl":"https://doi.org/10.3934/era.2023114","url":null,"abstract":"Asphalt mixture is composed of asphalt binder with aggregates of different sizes and compacted under static or dynamic forces. In practical engineering, compaction is a critical step in asphalt pavement construction to determine the quality and service life of pavement. Since the dynamic response characteristics of asphalt pavement can reflect the compaction state of asphalt mixture in the process of compaction, the establishment of the relationship between dynamic response characteristics and compaction degree is definitely significant. In this paper, a series of vibration sensors were adopted to capture the dynamic response signal of the vibration drum and asphalt mixture in the process of vibrating compaction for different surface courses of pavement. Then, the change regulations of vibration acceleration of vibrating drum and asphalt mixture were analyzed, and the quantitative linear relationship was established between accelerations of vibrating drum and asphalt pavement compactness. Further, the concept of evaluation unit (i.e., within 2 meters along the driving direction of the roller) and prediction method of compaction degree were proposed as well. The results showed that under the same vibration compaction condition, the compaction degree values of the top, middle and bottom layers have obvious differences, which should be taken seriously into consideration in the compaction process. Meanwhile, there is little difference which respectively are 2.8, 1.3 and 0.82% for the top, middle and bottom layers between the compaction degrees obtained by the proposed method and measured test. Therefore, the average value of the acceleration peak value of vibration drum within the evaluation unit can be adopted as the characterization index of the compaction degree of asphalt pavement. The investigation of this study can provide the technical reference for compaction control of asphalt pavement to a large extent.","PeriodicalId":48554,"journal":{"name":"Electronic Research Archive","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70244854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1