Construction of Rural Grass-roots Water Conservancy Service System in the Context of Institutional Changes

At present,it is urgent to solve problems of reforming and improving grass-roots water conservancy management mode in rural areas and improving rural water conservancy public service ability. Through analyzing institutional changes of grass-roots water conservancy management in rural areas,this paper discussed current situations and outstanding problems in grass-roots water conservancy services in rural areas of Kunming City. On the basis of current situations and problems,it came up with policy recommendations from reform of management institutions,reform of personnel system,construction of human resources,development of rural water use cooperation organizations,and improvement of fund input mechanism,to build rural grass-roots water conservancy service system.

Research Status and Trends of Indoor Positioning and Navigation Technology in China

As an essential component of future comprehensive Positioning,Navigation,and Timing(PNT)system,indoor positioning technology has extensive application demands,making it a focal point of attention in both academia and industry.This article comprehensively reviews the research status of indoor positioning technology in China,with a focus on highlighting representative achievements and application validations from major research institutions in recent years.It addresses the challenges and issues faced in promotion and application of large-scale,high-precision indoor positioning.Furthermore,a universal and seamless indoor-outdoor positioning system architecture is proposed,along with a technical roadmap and key technologies to achieve this architecture.Finally,an analysis and outlook on future technological trends are presented.

Service Robot Localization Based on Global Vision and Stereo Vision

To satisfy different positioning accuracy demand in the movement of the service robot, a hierarchical localization method based on vision was proposed considering the positioning cost and computational efficiency. The hierarchical positioning method could be divided into two parts: the localization method based on global vision and the localization method based on binocular vision. The global vision-based localization method was applied to calculate the initial coordinates of the robot and realize real-time rough positioning with the dead-reckoning method in the first stage. In the last stage, the binocular vision-based localization method was adopted to obtain higher positioning accuracy to make sure that the service robot can successfully grab the object. Experiments indicate that the proposed algorithm can accurately evaluate the positioning performance, obtain up to ±2 cm positioning accuracy, and absolutely meet the positioning requirements of the indoor service robot.

Beliefs and practices of young women on utilization of prevention of mother to child transmission of HIV services in Malawi

This study explored beliefs and actual practices of young women on utilization of Prevention of Mother to Child Transmission (PMTCT) of HIV services in Balaka district of Southern Malawi. The study design wascross sectional which utilized qualitative data collection and analysis methods. In-depth interviews were conducted on 12 young mothers of 15 to 24 years old. The respondents were drawn from 6 health centres in the district during their visits to either the under-five clinic, HIV and AIDS support groups or HIV follow up clinics. Data were analyzed using thematic analysis approach. Overall the respondents had positive beliefs on utilization of PMTCT services. They believed that adherence to PMTCT guidelines such as condom use, taking of Nevirapine (NVP) and exclusive breastfeeding protected the baby from contracting the virus. Nevertheless, all respondents believed that HIV testing was mandatory and that early weaning caused malnutrition and death of babies. Actual practice was very low. Very few young mothers breastfed exclusively, weaned their babies abruptly and took NVP as recommended. Not all positive beliefs translated into positive behavior. Lack of male support, inability of the midwives to provide comprehensive care to HIV infected mothers and their infants, and fear of stigma and discrimination were other factors that hindered utilization of PMTCT services. Culture was also a major barrier because traditionally babies are expected to be breastfed and supplements are fed to babies too. Therefore, there is a need to mobilize communities on PMTCT of HIV. Education programmes in HIV should emphasize behavior change interventions and should focus on both men and women and significant others. There is also need to intensify monitoring and evaluation of health workers’ activities to ensure that beliefs translate into positive behavior.

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.

Remote positioning system based on GPS/GPRS

Considering the need of target positioning,a remote positioning system is designed based on global positioning system(GPS)and general packet radio service(GPRS);The data collection terminal is based on microcontroller unit(MCU)PIC24FV301.It uses GPRS network to create wireless link and transmits GPS source information which is collected by LEA-5H board to monitor center on the Internet.The monitor center obtains the target information through processing and analysis of the calculated data.Actual operation results indicate that the designed system has excellent performance and achieves the goal of the remote location.

An Analysis of Public Service Announcements from the Perspective of At⁃titude in Appraisal System—Take TV PSA of Environmental Protection for Examples

With the development of social media,the TV public service advertisements play an important role in environmental pro⁃tection.The essay will analyze PSA about environmental protection from the perspective of Attitude in Appraisal System,trying to find out how ads work by using different kinds of sub-systems in attitude.And the essay will also focus on the proportion of positive and negative meanings,researching the myth of PSA.

Combination of light-emitting diode positioning identification and time-division multiplexing scheme for indoor location-based service

A combination of light-emitting diode（LED） identification and a time-division multiplexing scheme is proposed in this Letter for indoor location-based service. With the scheme, the arrangement of white LED lamps and the structure of a data frame are designed to realize high-accuracy indoor positioning and location-based payload data transmission simultaneously. The results of the experiment demonstrate that the indoor positioning accuracy is 10 cm and 2 Mb/s data transmission with high signal quality is realized.

Relationship between intubation rate and continuous positive airway pressure therapy in the prehospital setting

BACKGROUND: To determine whether the prehospital use of continuous positive airway pressure(CPAP) therapy is associated with a reduced rate of endotracheal intubation in patients with an acute respiratory disorder brought to the emergency department(ED).METHODS: We reviewed medical records of patients with acute respiratory distress who had been treated with CPAP in the Mobile Intensive Care Unit(MICU) from January 2010 to December 2011. These records were compared with those of patients who received standardized care without CPAP in the MICU from January 2004 to December 2004. Categorical variables were summarized as frequencies and compared between groups using Fisher's exact test or the Chi-square test. Continuous variables were summarized as medians(interquartile range), and comparison between the groups was made using Wilcoxon's rank-sum test. The relationship between CPAP and intubation rate was determined using multivariable logistic regression analysis of propensity scores. The results were presented as odds ratio(OR), 95% confidence interval(CI), and P value for test effect. The adequacy of the model was calibrated using Hosmer and Lemeshow's goodness-of-fit test. P<0.05 was considered statistically significant.RESULTS: The records of 785 patients were reviewed. Of the 215 patients treated with CPAP in the MICU, 13% were intubated after admission. In contrast, of the 570 patients who did not receive CPAP, 28% were intubated after ED admission. Unadjusted logistic regression analysis showed that patients who had been treated with CPAP were less likely to be intubated than those without CPAP treatment(OR=0.37, 95% CI, 0.24–0.57, P<0.0001). With propensity scores adjusted, multivariate logistic regression analysis showed that CPAP treatment was associated with a 62% reduction of intubation(OR=0.384, 95%CI, 0.25–0.60, P≤0.0001).CONCLUSIONS: In patients with acute respiratory disorder, there was a relationship between CPAP therapy and the decreased intubation rate. CPAP therapy was feasible in prehospital management of patients with respiratory distress.

Impact of different sampling rates on precise point positioning performance using online processing service

In this study,the effect of different sampling rates(i.e.observation recording interval)on the Precise Point Positioning(PPP)solutions in terms of accuracy was investigated.For this purpose,a field test was carried out inÇorum province,Turkey,on 11 September 2019.Within this context,a Geodetic Point(GP)was established and precisely coordinated.A static GNSS measurement was occupied on the GP for about 4-hour time at 0.10 second(s)/10 Hz measurement intervals with the Trimble R10 geodetic grade GNSS receiver.The original observation file was converted to RINEX format and then decimated into the different data sampling rates as 0.2 s,0.5 s,1 s,5 s,10 s,30 s,60 s,and 120 s.All these RINEX observation files were submitted to the Canadian Spatial Reference System-Precise Point Positioning(CSRS-PPP)online processing service the day after the data collection date by choosing both static and kinematic processing options.In this way,PPP-derived static coordinates,and the kinematic coordinates of each measurement epoch were calculated.The PPP-derived coordinates obtained from each decimated sampling intervals were compared to known coordinates of the GP for northing,easting,2D position,and height components.According to the static and kinematic processing results,high data sampling rates did not change the PPP solutions in terms of accuracy when compared to the results obtained using lower sampling rates.The results of this study imply that it was not necessary to collect GNSS data with high-rate intervals for many surveying projects requiring cm-level accuracy.

The Study on the Market Position for China Post to Launch International Financial Service

The article studies the international financial service, which might be opened by China Post. Based on defining postal financial service, it analyses the face-to-face circumstances and challenges by using the method of normal market position and the method of General Electric Company （GEC）. Finally it defines the market position of Postal Financial International Service （PFIS）.

内蒙古自治区社区5类精神障碍患者精神卫生服务利用现状

目的:描述内蒙古自治区社区5类精神障碍终生患者精神卫生服务利用现况,为健康教育和制定相关政策提供参考。方法:采用分层多阶段不等概率抽样方法抽取内蒙古自治区18岁及以上常住居民共12 315名,采用复合性国际诊断交谈表调查心境障碍、焦虑障碍、物质使用障碍、间歇爆发性障碍、进食障碍等5类精神障碍及精神卫生服务利用现况,以单因素分析方法进行描述性统计。结果:5类精神障碍中,任何一种精神障碍终生患者咨询率为18.7%,治疗率为10.2%,患者接受非医务工作者治疗的比例最高(31.4%),其次是接受精神科或心理科医生治疗;患者中有1.1%的患者接受药物治疗,有2.5%的患者接受心理治疗。结论:内蒙古自治区精神障碍患者精神卫生服务利用率较低,要广泛开展正确求医的健康教育。

城市生态系统长期定位观测数据与服务评估的关系

城市生态系统为城市和市民提供的服务功能是城市生态系统国家定位观测研究站(以下简称城市站)观测和研究的重点内容。为强化城市站观测数据的统一性、系统性和可对比性,以及合理利用观测数据评估生态系统服务,文章首先通过梳理国内外城市站的管理和观测研究实践,针对目前城市站数据观测和管理上存在的问题提出对策建议;其次在梳理城市生态系统服务与观测指标关系的基础上,构建基于观测数据的生态系统服务评估框架,以提升观测数据的利用价值,提高城市站的社会服务能力和影响力;最后从提升城市站观测数据质量、丰富观测研究成果类型,以及服务评估框架的可行性提出思考。

湖南省卫星导航定位基准站网服务体系建设及思考

卫星导航定位基准站网是重要的国家空间基础设施,对国家安全和国民经济建设具有重要意义。湖南省卫星导航定位基准站网(HNCORS)经过多年发展,其网型结构不断优化,用户并发服务能力得到提升,服务领域不断拓展。随着数字中国建设和数字经济的蓬勃发展,高精度位置服务需求日益旺盛,HNCORS迎来了新的发展机遇,同时也面临新的挑战,如在监管机制、基础设施、自主创新和共享融合等方面存在不足。为了解决这些问题,湖南开展了卫星导航定位基准站网服务体系建设。本文首先描述了HNCORS服务体系建设背景;然后从管理机制、基础设施和核心技术三个方面阐述建设过程,总结出在服务模式、应用领域和共享融合方面取得的成效;最后对其未来发展进行展望,并从要素保障、自主创新、发展与安全三个方面提出针对性建议,可为卫星导航产业的发展和相关部门政策制定提供参考。

实时PPP离岸潮位遥测方法与试验

为降低离岸潮位实时遥测成本,提高适用性,提出了基于实时精密单点定位的离岸潮位数据获取与提取方法,利用小型浮标搭载具有实时PPP和远程通讯功能的GNSS接收机进行离岸潮位遥测,原始观测数据经粗差剔除、均值化处理、S-G滤波后,较好地剔除了风、浪、流等引起浮标姿态变化所带来的测量误差。研发了相应软硬件,并在天津港外海进行了试验,测试结果优于±8cm,整体中误差为±3.7cm,满足海洋观测规范要求。相较基于压力式传感器加声学通信的现行数据采集方式,该方法具有建设成本较低、观测方式简单、后期维护方便、产业化前景好等特点,可进一步在实际项目中推广使用。

新时代地方高等学校社会科学学报的功能定位与发展策略

新时代对出版工作提出了新的使命任务和要求。高等院校学报要坚守意识形态的阵地,发挥学术传播和育人功能。要从提升学术引领能力、编辑策划与把关能力以及出版服务能力入手。只有这样,才能完成时代赋予的使命和任务,全面提升学术期刊质量,做好学术期刊出版工作。

基于Galileo HAS服务的全球PWV反演验证分析

基于实时精密单点定位PPP的大气可降水量PWV反演技术近年来受到广泛研究,但目前该技术大多需利用网络通讯接收改正信息,这使其在通讯网络不能覆盖及因灾通讯受限地区的使用受到限制。2023年1月开通服务的Galileo系统高精度定位服务HAS(High Accuracy Service)为实现不依赖额外通讯手段的实时PWV反演提供了新手段。本文首先分析验证了Galileo系统HAS服务的卫星轨道和钟差改正信息精度,并将基于武汉大学IGS分析中心产品的PWV反演结果作为内部对比参考值、将基于ERA5数据及探空数据结果作为PWV结果对比的外部参考值,验证了基于HAS服务的PWV反演精度。结果表明HAS服务反演得到的PWV与两类参考值均具有较高的一致性。其中HAS服务计算得出的结果与IGS事后产品PWV解算结果的两序列差的RMS为2.91 mm,与探空数据的序列差的RMS为2.51 mm。初步验证了HAS可用于降雨的短时预报可行性。

社区卫生服务中心高血压人群国家慢性病管理服务治疗依从性现状及影响因素研究

背景高血压人群在我国基数较大,其防治措施主要依靠国家基本公共卫生服务内的慢性病管理服务项目。但目前研究显示其利用率并不高,因此针对参与者进行调查,确定影响其治疗依从性的因素,对提高高血压人群国家慢性病管理服务的参与度和患者健康水平具有重要意义。目的调查和分析国家基本公共卫生服务内高血压管理服务的治疗依从性现状及影响因素,为提高高血压患者治疗依从性提供参考依据。方法分多阶段抽取2022年6—9月广州市某社区卫生服务中心所服务社区的295名高血压管理服务参与者为研究对象,使用一般资料调查表、情绪平衡量表(正向情绪、负向情绪)调查研究对象的基本情况,使用高血压治疗依从性量表调查研究对象治疗依从性现状,采用多因素Logistic回归分析探讨高血压人群国家慢性病管理服务治疗依从性的影响因素,并探讨正负情绪合并状况对高血压人群国家慢性病管理服务治疗依从性的影响。结果发放问卷310份,回收有效问卷295份,有效率为95.2%;高血压治疗依从性量表总分为(94.24±8.67)分,其中遵医服药(21.06±2.45)分,不良服药(31.33±3.90)分,烟酒管理(8.44±1.88)分,日常生活管理(33.41±4.61)分,依从性较好率为52.2%(154/295);情绪平衡表中正向情绪得分为(3.76±1.02)分,负向情绪得分为(2.63±1.12)分;多因素Logistic回归分析结果显示,性别、年龄、BMI、受教育程度、血压控制情况、自我感觉身体状况、对就诊点满意度、正向情绪较多、负向情绪较少是高血压人群国家慢性病管理服务治疗依从性较好的影响因素(P<0.05);正负情绪合并状况为正多负少的高血压人群国家慢性病管理服务治疗依从性是正负情绪合并状况为正少负多者的15.867倍(P<0.05),正负情绪合并状况为正多负多的高血压人群国家慢性病管理服务治疗依从性是正负情绪合并状况为正少负多者的5.114倍(P<0.05)。结论高血压患者国家慢性病管理服务的治疗依从性尚存在提升空间,除了性别、年龄等客观因素外,还要注重患者的情绪管理、治疗的反馈效果和在社区医院的就医体验等方面内容。

Free-walking:Pedestrian inertial navigation based on dual foot-mounted IMU

The inertial navigation system(INS),which is frequently used in emergency rescue operations and other situations,has the benefits of not relying on infrastructure,high positioning frequency,and strong real-time performance.However,the intricate and unpredictable pedestrian motion patterns lead the INS localization error to significantly diverge with time.This paper aims to enhance the accuracy of zero-velocity interval(ZVI)detection and reduce the heading and altitude drift of foot-mounted INS via deep learning and equation constraint of dual feet.Aiming at the observational noise problem of low-cost inertial sensors,we utilize a denoising autoencoder to automatically eliminate the inherent noise.Aiming at the problem that inaccurate detection of the ZVI detection results in obvious displacement error,we propose a sample-level ZVI detection algorithm based on the U-Net neural network,which effectively solves the problem of mislabeling caused by sliding windows.Aiming at the problem that Zero-Velocity Update(ZUPT)cannot suppress heading and altitude error,we propose a bipedal INS method based on the equation constraint and ellipsoid constraint,which uses foot-to-foot distance as a new observation to correct heading and altitude error.We conduct extensive and well-designed experiments to evaluate the performance of the proposed method.The experimental results indicate that the position error of our proposed method did not exceed 0.83% of the total traveled distance.