基于ASP-SERes2Net的说话人识别算法

为提升说话人识别的特征提取能力,解决在噪声环境下识别率低的问题,提出一种基于残差网络的说话人识别算法——ASP-SERes2Net。首先,采用梅尔语谱图作为神经网络的输入;其次,改进Res2Net网络的残差块,并且在每个残差块后引入压缩激活(squeeze-and-excitation,SE)注意力模块;然后,用注意力统计池化(attention statistics pooling,ASP)代替原来的平均池化;最后,采用附加角裕度的Softmax(additive angular margin Softmax,AAM-Softmax)对说话人身份进行分类。通过实验,将ASP-SERes2Net算法与时延神经网络(time delay neural network,TDNN)、ResNet34和Res2Net进行对比,ASP-SERes2Net算法的最小检测代价函数(minimum detection cost function,MinDCF)值为0.0401,等误率(equal error rate,EER)为0.52%,明显优于其他3个模型。结果表明,ASP-SERes2Net算法性能更优,适合应用于噪声环境下的说话人识别。

Multi-aspect analysis of ureteral access sheath usage in retrograde intrarenal surgery: A RIRSearch group study

Objective:To evaluate the effect of ureteral access sheath(UAS)use and calibration change on stone-free rate and complications of retrograde intrarenal surgery(RIRS).Methods:Data from 568 patients undergoing RIRS for kidney or upper ureteral stones were retrospectively included.Firstly,patients were compared after 1:1 propensity score matching,according to UAS usage during RIRS(UAS used[+]87 and UAS non-used[−]87 patients).Then all UAS+patients(n=481)were subdivided according to UAS calibration:9.5-11.5 Fr,10-12 Fr,11-13 Fr,and 13-15 Fr.Primary outcomes of the study were the success and complications of RIRS.Results:Stone-free rate of UAS+patients(86.2%)was significantly higher than UAS−patients(70.1%)after propensity score matching(p=0.01).Stone-free rate increased with higher caliber UAS(9.5-11.5 Fr:66.7%;10-12 Fr:87.0%;11-13 Fr:90.6%;13-15 Fr:100%;p<0.001).Postoperative complications of UAS+patients(11.5%)were significantly lower than UAS−patients(27.6%)(p=0.01).Complications(8.7%)with 9.5-11.5 Fr UAS was lower than thicker UAS(17.2%)but was not statistically significant(p=0.09).UAS usage was an independent factor predicting stone-free status or peri-and post-operative complications(odds ratio[OR]3.654,95%confidence interval[CI]1.314-10.162;OR 4.443,95%CI 1.350-14.552;OR 4.107,95%CI 1.366-12.344,respectively).Conclusion:Use of UAS in RIRS may increase stone-free rates,which also increase with higher caliber UAS.UAS usage may reduce complications;however,complications seemingly increase with higher UAS calibration.

基于OBE背景的Access数据库课程实践教学探索

为强化大学生的计算机应用技能,并培养他们运用合理的方法和工具解决实际问题的能力,基于对OBE(Outcome-Based Education,即结果导向教育)理念的深刻认识,对通识教育中的必修课程——Access数据库应用进行创新性的教学改革。不仅对课程教学目标进行全新的设计,还制定学习成效的检测与评价标准,以确保教学改革的实施效果。以Access数据库应用这门课程为例,对其调研报告和课程综合作业的评价量规设计进行深入地探讨,并详细阐述这些评价量规在提升学生学习效果、检验教学成果方面所发挥的重要作用。这些评价量规不仅有助于指导学生学习,还能为教师提供有效的教学反馈。通过应用教学的实践,发现评价量规对优化课程教学和提升培养目标具有显著的指导和支持作用。简而言之,通过改革教学方式和引入评价量规,成功地提高大学生的计算机应用能力,并帮助他们更好地利用技术和工具解决实际问题。这些教学创新不仅显著提高课程的教学品质,同时也为学生的长期学术进步和职业生涯规划奠定牢固的基础。

Difficulty removing a totally implantable venous access port:A case report

BACKGROUND This case report examines the challenges associated with removing a totally implantable venous access port(TIVAP)used for long-term chemotherapy in a patient with breast cancer.Prolonged use of TIVAPs can result in complications such as catheter kinking,thrombosis,and adhesions between the catheter and surrounding tissues,potentially complicating their removal.CASE SUMMARY A breast cancer patient with bone metastasis presented with difficulty aspirating blood from a TIVAP that had been placed in the right internal jugular vein for 3 years.Initial removal attempts at the Department of Venous Access Center were unsuccessful,likely due to adhesions,necessitating a subsequent successful catheter extraction in a hybrid operating room.Imaging revealed no abnor-malities,and the catheter was removed using a mosquito clamp to detach it from surrounding tissues.CONCLUSION This case highlights the challenges of removing TIVAPs inserted via the internal jugular vein,particularly when the catheter traverses the sternocleidomastoid muscle.Repeated neck movements might lead to significant adhesions around the catheter,complicating its removal.Careful consideration should be given during catheter placement to avoid muscle-related adhesions and facilitate smoother extraction in long-term use.

Ultra-Dense LEO Satellite-Aircraft Access and Service Management in Civil Aviation

With the deployment of ultra-dense low earth orbit(LEO)satellite constellations,LEO satellite access network(LEO-SAN)is envisioned to achieve global Internet coverage.Meanwhile,the civil aviation communications have increased dramatically,especially for providing airborne Internet services.However,due to dynamic service demands and onboard LEO resources over time and space,it poses huge challenges in satellite-aircraft access and service management in ultra-dense LEO satellite networks(UDLSN).In this paper,we propose a deep reinforcement learning-based approach for ultra-dense LEO satellite-aircraft access and service management.Firstly,we develop an airborne Internet architecture based on UDLSN and design a management mechanism including medium earth orbit satellites to guarantee lightweight management.Secondly,considering latency-sensitive and latency-tolerant services,we formulate the problem of satellite-aircraft access and service management for civil aviation to ensure service continuity.Finally,we propose a proximal policy optimization-based access and service management algorithm to solve the formulated problem.Simulation results demonstrate the convergence and effectiveness of the proposed algorithm with satisfying the service continuity when applying to the UDLSN.

Correlation between psychological,family social support,and home nursing quality for an implanted venous access port

BACKGROUND Cancer patients with an implanted venous access port(IVAP)often manage their care at home during chemotherapy intervals,including maintaining the device,monitoring complications,and following medication instructions.Home care ensures continued support after discharge.However,due to factors such as age,gender,culture,psychological status,and family support,the quality of home care varies significantly.Understanding these factors can help provide targeted guidance to improve the care of cancer patients.AIM To explore IVAP chemotherapy on home care quality and its association with mental health and family support for cancer patients.METHODS This investigative study was based on a medical records system.It investigated the relationship between psychological status,family support,and home care quality in 180 patients with cancer undergoing IVAP chemotherapy.Psychological status was assessed using the State Anxiety Inventory(S-AI);family support was assessed using the Perceived Social Support Scale(PSSS),and home care quality was evaluated using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire(EORTC QLQ-C30).Pearson’s correlation and Structural Equation Modeling were used to analyze the interplay between these factors.RESULTS The average S-AI score was 47.52±14.47,PSSS was 52.48±12.64,and EORTC QLQ-C30 was 70.09±17.32.A substantial inverse relationship was observed between the EORTC QLQ-C30 and S-AI scores(r=-0.712).A significant positive correlation was found between the EORTC QLQ-C30 and the PSSS,with a correlation coefficient of(r=0.744).The multiple linear regression analysis indicated that family social support,psychological status,and average monthly family income were the main factors influencing the variation in the quality of home care,explaining 71.9%of the variation.The Structural Equation Modeling results indicated that psychological status acted as a partial mediator in the association between family social support and home care quality of life,explaining 32.78%of the mediation effect.CONCLUSION Psychological status and family social support positively impacted cancer patients’home care quality,with psychology partially mediating this effect.

ASP+ACCESS安全隐患及对策

ASP技术对Access数据库的访问,主要隐患来自Access数据库的安全性,其次在于ASP网页设计过程中的安全漏洞。笔者通过对Access存储隐患,Access解密隐患,源代码安全隐患,程序设计安全隐患的分析及非常规命名法,ODBS数据源法,对ASP页面加密法,加密机制的讨论,给出了解决安全隐患的对策,使ASP技术对数据库访问的安全性得到有效保证。

ASP技术与Access数据库构建动态网站安全性评析

利用服务器和单机环境下试验、分析、比较、总结的方法,以ASP技术为支撑,以VBScript为服务器端脚本语言,以桌面数据库Access为后台数据库框架的组合开发动态网站,解决ASP技术与Access数据库开发动态网站安全隐患。通过反复测试和修改,解决了网站存在的诸多安全隐患。

ASP对Access,Excel,Text数据库文件的访问

讨论了ASP访问Access,Excel,Text数据库文件的语句格式和参数设置方法 ,给出对Txt文件的查询实例。

基于ASP的Flash与Access数据库数据通讯的实现

介绍了Flash和ASP的结合原理和loadVariables方法,提出了一种Flash通过ASP与外部数据通讯的方法,分析了该方法中接收和发送数据的具体操作工程.实例的调试、运行结果表明,该方法具有良好的稳定性和可靠性.

基于IIS+ASP+Access网站的安全隐患及防范

怎样防黑、保护自己的成果不被别人窃取已经成为站点建设者必须考虑的首要问题。通过对网站的调查及开发经验,以常见的网站开发组合IIS+ASP+Access为例,分析了网站建设中的安全隐患。根据理论指导与分析,提出了解决安全隐患的具体措施。

关于ASP+ ACCESS数据库的安全问题

本文对用ASP和Access构造网站中存在的普遍性安全问题进行分析,并探讨了相应的解决方法.

利用ASP+Access构建检索网页深化标准文献服务

介绍了一种利用ASP+Access构建检索网页及馆藏标准文献数据库,深入揭示标准文献汇编本的方法,对此方法的优点及可行性进行了讨论,可将其结果扩大到论文集、会议录等汇编本文献,认为这是一种在目前深入揭示馆藏,深化图书馆为读者服务功能的切实可行的方法。

用ASP和ACCESS构建图片显示动态网页

结合为某小型商业公司构建产品宣传网站的过程中,涉及到的构建配有产品图片的产品介绍动态网页问题,探讨了用ASP和ACCESS构建图片显示动态网页的几种思路,以及在这些思路实现过程中所用到的关键技术的处理方法和理论依据。

基于ASP+Access开发的网站的安全隐患及对策

通过分析采用ASP技术中几个常见的安全问题和Access数据库的安全性 ,提出了增强ASP +Access网站安全性的若干对策。

Asp+access网站的安全问题及其防范

Asp作为一种广泛使用的动态网页制作技术,结合微软office中的access数据库,目前被大量运用于中小型网站的制作中。asp＋access网站相对脆弱的安全性使其成为黑客攻击的目标。从asp的常见安全问题出发,以Web服务器端、asp程序设计、数据库安全三个方面对asp的安全技术进行分析,并指出ASP环境下的安全问题应从系统的全局进行分析和考虑,asp的安全应以预防为主。

ASP+Access的安全隐患及对策

ASP +Access已被广泛地应用在电子商务、BBS论坛等各种互联网应用中。本文从ASP语言的特性和AC CESS数据库本身的特点出发 ,分析了ACCESS数据库应用在ASP中的四大安全隐患 。

ASP.NET中如何连接Sql Server2000和Access2000数据库

重点讨论ASP NET中如何连接SQLServer 2 0 0 0和Access2 0 0 0数据库的方法 针对VisualStudio NET开发工具 。

基于Microsoft ASP和Access数据库的MIS网上购物系统

本文主要包括网上销售系统前台界面的设计和后台数据库管理的设计。采用Microsoft ASP技术,后台数据库采用Access数据库。实现了用户注册/登录、商品搜索、购买、管理员对网站的管理等功能。并采用MD5加密算法增加了系统的安全性。

基于ASP+ACCESS的网络教学资源共享系统

在网络技术高速发展的今天,高校教育管理正逐步走向系统化、科学化、现代化,建立高校内各教研室,各学科、各高校,甚至高校之间的教学资源库,实现教学资源网上共享和协同管理是非常有必要并且可行的。学校计算机中心利用ASP+ACCESS实现了框架结构的教学资源库网络共享系统的建设,为教育部门大力发展网络教学资源库建设提供了一种方法和思路。