Real-Time Object Detection and Face Recognition Application for the Visually Impaired

The advancement of navigation systems for the visually impaired has significantly enhanced their mobility by mitigating the risk of encountering obstacles and guiding them along safe,navigable routes.Traditional approaches primarily focus on broad applications such as wayfinding,obstacle detection,and fall prevention.However,there is a notable discrepancy in applying these technologies to more specific scenarios,like identifying distinct food crop types or recognizing faces.This study proposes a real-time application designed for visually impaired individuals,aiming to bridge this research-application gap.It introduces a system capable of detecting 20 different food crop types and recognizing faces with impressive accuracies of 83.27%and 95.64%,respectively.These results represent a significant contribution to the field of assistive technologies,providing visually impaired users with detailed and relevant information about their surroundings,thereby enhancing their mobility and ensuring their safety.Additionally,it addresses the vital aspects of social engagements,acknowledging the challenges faced by visually impaired individuals in recognizing acquaintances without auditory or tactile signals,and highlights recent developments in prototype systems aimed at assisting with face recognition tasks.This comprehensive approach not only promises enhanced navigational aids but also aims to enrich the social well-being and safety of visually impaired communities.

Transmission Considerations with QoS Support to Deliver Real-Time Distributed Speech Recognition Applications

Distributed speech recognition (DSR) applications have certain QoS (Quality of service) requirements in terms of latency, packet loss rate, etc. To deliver quality guaranteed DSR application over wirelined or wireless links, some QoS mechanisms should be provided. We put forward a RTP/RSVP transmission scheme with DSR-specific payload and QoS parameters by modifying the present WAP protocol stack. The simulation result shows that this scheme will provide adequate network bandwidth to keep the real-time transport of DSR data over either wirelined or wireless channels.

Real-Time Computer Analytical Application in Pressure Transient Analysis of Petroleum Reservoirs

Today with certainty, the petroleum industry is fostering sanguinely the fields’ development programs for the optimization of reservoir characterization through worth-full appliances of computer analysis techniques. The time element is of prime importance for optimistic petroleum development projects. Therefore, the frontline of “Real-time Analysis” is added into the applications of computer solving techniques for achieving and sketching up the real-time cost effectiveness in analyzing field development programs. It focuses on the phases of real-time well test data acquisition system, real-time secure access to the well test data either on field or in office and real-time data interpretation unit. This interface will yield the productive results for the field of reservoir’s pressure transient analysis and wells’ systems analysis by following the up-to-date preferred, accurate and effective well test analytical principles with modern real-time computer applications and techniques. It also lays emphasis for the comfort and reliability of data in creating best interpersonal working modes within a reputable and esteemed petroleum development organization.

Application of real-time 3d echocardiography in mitral valve repair for replacement of chordae tendineae

Objective To investigate the surgical technique and outcomes of replacement of chordae tendineae in mitral valve repair,and evaluate the value of real-time three-di-mensional transesophageal echocardiography in the perioperative period. Methods Thirty-one patients with mitral valve prolapse underwent mitral valve repair using chordae tendineae replacement concomitant with implantation

地基BDS/GNSS水汽监测在水利领域的研究进展与展望

地球上几乎所有的水汽都集中在对流层,水汽含量对全球气温、降水等气象要素都有很大的影响,在一定程度上可以影响地球气候变化,在全球范围内调节热量平衡.对对流层水汽监测、水资源管理、极端天气预警和气候变化研究等具有十分重要的作用.在北斗卫星导航系统(BeiDou Navigation Satellite System, BDS)/GNSS技术持续发展和完善的过程中,BDS/GNSS大气可降水量反演(precipitable water vapor,PWV)逐渐成为一种新型的水汽探测技术,相较于传统水汽探测技术可实现对水汽高精度、近实时的监测.本文对BDS/GNSS PWV反演的发展历程及研究现状进行了系统地综述,阐明其反演原理与方法,主要从高精度水汽监测、降水短临预报、气候变化及旱涝监测方面分析地基BDS/GNSS水汽监测在水利领域中的应用与发展方向.

Meteorological applications of precipitable water vapor measurements retrieved by the national GNSS network of China

In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sites, including 260 belonging to the Crustal Movement Observation Network of China （CMONOC） and 692 belonging to the China Meteorological Administration GNSS network （CMAGN）. Additionally, GNSS observation collecting and data processing procedures are presented and PWV data quality control methods are investigated. PWV levels as determined by GNSS and radiosonde are compared. The results show that GNSS estimates are generally in good agreement with measurements of radio- sondes and water vapor radiometers （WVR）. The PWV retrieved by the national GNSS network is used in weather forecasting, assimilation of data into numerical weather prediction models, the validation of PWV estimates by radiosonde, and plum rain monitoring. The network is also used to monitor the total ionospheric electron content.

“GNSS测量原理与应用”的STEM教学模式探索

在STEM教学模式下剖析了“GNSS测量原理与应用”课程的瓶颈,提出以STEM教育理念为向导的跨学科、跨专业融合测绘知识的课程体系教学新模式。面向“学、赛、研”三位一体教学框架,在协同创新中创建了立体化课程框架,搭建了互联网虚拟仿真实验STEM教学信息化平台,并对该模式进行教学应用,取得较好的教改成效,为测绘类课程的教学模式探索提供实践参考资料。

GNSS/MET Station Equipment Maintenance and Product Application

Based on the use of Global Navigation Satellite System (GNSS) for meteorological detection in the world, we used the GNSS/MET detection equipment in the meteorological departments of Liaoning Province of China and its data to study and summarize the maintenance methods of GNSS/MET (Global Navigation Satellite System Meteorology) detection equipment and the application of water vapor products in operational systems. The results show that: 1) For GNSS/MET failures, specific inspections and classifications can be performed according to different phenomena;2) The GNSS water vapor measurement station samples every 30 seconds, forming one set of GNSS data every hour, and can detonate the atmospheric precipitation by solving the original data;3) Using the “Navigation Satellite Remote Sensing Water Vapor Application Management System”, the GNSS/MET water vapor products can be directly displayed. We can get the conclusion that GNSS/MET has far-reaching significance for studying the law of atmospheric water vapor changes and enhancing the ability to monitor severe weather such as heavy rain and strong convection.

GNSS测量技术在工程测量中的应用

我国经济发展水平持续提升,城市化建设进程持续加快,出现了较多工程建设项目。而工程项目建设中,为保证项目施工的合理推进,需要重点做好工程测量工作。GNSS测量技术由于具有较高的优势,现已被广泛应用于工程测量中。本文对GNSS测量技术相关内容进行简要分析,阐述GNSS测量技术在工程测量中的应用价值,并以实际工程为例探究工程测量中GNSS测量技术的实际应用。希望通过本文研究,为相关人员提供参考借鉴,确保在工程测量中充分发挥出GNSS测量技术的实际作用。

GNSS技术在地质灾害安全监测预警系统中的应用

GNSS监测系统利用卫星实现全球定位,对地表任意空间进行定位,获取该地区的有效数据。人工监测受多重因素影响,无法保证监测数据的有效性。而GNSS监测系统以自身多样性优势诞生,不同于常规测量方法,GNSS操作更加简便,能够实现全天候作业。基于此,文章结合实际案例,对GNSS技术在地质灾害安全监测预警系统中的应用进行深入研究,以供参考。

REAL-TIME SOFTWARE SYSTEM FOR PRODUCTION PROCESS SUPERVISION

The real-time software system for production process supervision is a inte-gral system,including on-line function subsystem for supervision and off-line auxiliarysubsystem for development and diagnosis.This paper introduces a real-time software sys-tem which has been used in a power station for monitoring a large capacity thermal gener-ating unit.The subsystems,environment,performance and development of the system areexplained,and the common problems about real-time software system are described.

Performance analysis of real-time and post-mission kinematic precise point positioning in marine environments

This article focuses on the performance analysis of both real-time and post-mission kinematic precise point positioning(PPP)in challenging marine environments.For this purpose,a real dynamic experiment lasting 6 h was carried out on a lake dam in?orum City of Turkey.While the kinematic test was continuing,the real-time PPP coordinates were obtained for each measurement epoch with a commercial real-time PPP(RT-PPP)service,namely the Trimble Center Point RTX.Then the post-mission PPP(PM-PPP)coordinates were calculated by using Multi-GNSS data and the Multi-GNSS Experiment(MGEX)precise products.The kinematic RT-PPP and PM-PPP results showed that the PPP coordinates were consistent with the relative solution at centimetre and decimetre level in horizontal and height components,respectively.This study implies that PPP technique is a powerful tool for highly accurate positioning in both real-time and post-mission modes,even for dynamic applications in harsh environments.

Epoch-based Application Collaboration for Sensing Data Analysis

The application collaboration was addressed to provide energy-efficient data services for distributed sensing applications to collaboratively interacting to achieve a desired global objective not detectable by any single cluster. An epoch-based transaction model was proposed by using the concept of sphere of control （SoC）, and a collaborative sensing application can be dynamically formed as a nested architecture composed of time-synchronized applications. By loosening the rigid constraints of ACID to adapt the requirements of sensor networks, the submission, rollback and consistency rules ware educed and a two-phrase submission protocol was designed. Finally, it was illustrated that the model is capable of providing an adaptive formal template for sensing application collaboration. Our performance evaluations show that by applying the two-phrase submission protocol, we can significantly improve the number of reported answers and response time, raise resource utilization, and reduce the energy cansumption and data loss.

GNSS与GZCORS测量系统在六枝平桥粘土矿详查测量中的应用

随着我国科学技术的不断发展和社会的不断进步,北斗卫星导航系统得到不断完善,GNSS测量系统也得到快速发展。伴随GZCORS测量系统的建立和完善,GNSS与GZCORS测量系统在贵州省各行各业的测绘工作中日趋发挥重要作用,特别是在地质勘探、详查等地质测量中应用广泛。本文结合工作实际,对GNSS与GZCORS测量系统在六枝平桥粘土矿详查测量中的应用进行分析,以供参考。

专业认证背景下课程改革研究——以GNSS原理及应用课程为例

工程教育专业认证是实现工程教育和工程师资格国际互认的重要基础,课程建设是工程教育认证考核的重要部分。该文针对当前专业认证的新形势,分析GNSS原理及应用课程教学中存在的问题,并结合GNSS原理及应用课程的特点,以专业认证三大核心理念为指导,从课程教学大纲的完善与修订、课程教学内容的设计、课程教学方法和考核方法改革等方面进行探索,给出具体的改革措施,以期为测绘类专业课程的建设和发展提供借鉴和思路。

GNSS 测量技术在公路桥梁施工控制测量中的应用研究

随着社会的高速发展,越来越多的科学技术融入工程建设领域,为施工作业提供了极大的助益。公路桥梁工程中控制测量是一项重要工作,GNSS测量技术的应用解决了传统测量方法中存在的种种弊端,提高了测量的精准度和时效性。介绍了GNSS测量技术的概念和优势,分析了该技术在公路桥梁施工控制测量工作中的技术要点,并阐述了施工过程中的具体应用路径,希望能够给建设施工单位相关人员一定的参考。

测绘专业认证背景下的“GNSS测量原理与应用”课程教学研究

工程教育专业认证是一种合格评估,不同于院校本科评估和审核评估,通过意味着专业全体学生达到毕业要求。目前全国高校的许多专业正接受工程教育专业认证,测绘专业工程教育专业认证也不例外。在此背景下,本文首先回顾了当前全国专业认证的现状,然后阐述了工程教育认证下的测绘专业课程体系建设,着重分析了测绘专业教育成果导向教学设计流程,讨论了"GNSS测量原理与应用"课程教学大纲的修改与完善,最后研究了在课程课堂教学中如何体现工程教育专业认证的核心理念,且举例进行了论述。

全球导航定位系统GNSS的技术与应用

介绍了GNSS系统的发展过程及组成部分(GPS,GLONASS,GALILEO,BEID-OU),归纳了GNSS定位、GNSS-R、GNSS掩星、组合导航、嵌入式等技术,并对GNSS最新的应用领域进行全面研究分析,以及预测GNSS系统的发展前景。

GNSS对流层水汽监测研究进展与展望

对流层是近地空间环境中与人类活动联系最为密切的大气层,而水汽是低层大气圈中最重要的组成部分之一。尽管水汽在对流层中所占比例较小,但在一系列天气和多种气候变化中都扮演着重要角色。随着全球导航卫星系统(GNSS)的快速发展,GNSS对流层水汽监测成为重要的研究和应用方向。本文系统介绍了GNSS多维水汽监测及其在相关方面应用的研究现状和进展。GNSS水汽监测研究方面,当前主要集中在二维大气可降水量监测和三维湿折射率/水汽密度廓线反演两部分;GNSS水汽应用研究方面,当前主要包括定位、短临降雨及旱涝监测、数值同化预报等。

城市道路GNSS脆弱性评估技术

全球卫星导航系统(global navigation satellite system,GNSS)在交通领域应用广泛,其服务性能的可靠性受到交通用户日益增长的关注.但是,由于系统故障、电离层闪烁、多路径效应、电磁干扰等脆弱性因素的存在,GNSS存在固有脆弱性,它影响GNSS的服务性能,甚至给用户带来巨大风险.当GNSS服务性能受到脆弱性因素干扰时,评估GNSS脆弱性,并且为用户提供及时的脆弱性告警,可以有效降低脆弱性因素对用户服务性能的影响.为评估不同城市道路环境下的GNSS脆弱性,在现有GNSS脆弱性评估算法的基础上,针对城市道路环境的特点,提出了相应的GNSS交通应用脆弱性评估指标;并采用基于信息熵权的数据融合算法,计算导航场景距正负理想场景的距离,实现了多个导航场景的脆弱性评估.路测实验表明,隧道、城市峡谷、林荫道和开阔路段的脆弱性依次降低,该方法所选取的脆弱性评估指标和采用的脆弱性评估算法可满足城市道路GNSS脆弱性评估需求.