scholarly journals Rigid Bridges Health Dynamic Monitoring Using 100 Hz GPS Single-Frequency and Accelerometers

Positioning ◽  
2019 ◽  
Vol 10 (02) ◽  
pp. 17-33
Author(s):  
João Olympio de Araújo Neto ◽  
Jorge Luiz Alves Trabanco ◽  
Ana Paula C. Larocca ◽  
Andre Luiz Cunha ◽  
Marcelo Carvalho dos Santos
Keyword(s):  
Dynamic Monitoring ◽  
Single Frequency

scholarly journals Galileo Augmenting GPS Single-Frequency Single-Epoch Precise Positioning with Baseline Constrain for Bridge Dynamic Monitoring

2019 ◽  
Vol 11 (4) ◽  
pp. 438 ◽  
Author(s):  
Qiuzhao Zhang ◽  
Chun Ma ◽  
Xiaolin Meng ◽  
Yilin Xie ◽  
Panagiotis Psimoulis ◽  
...  
Keyword(s):  
Success Rate ◽  
Search Space ◽  
Dynamic Monitoring ◽  
Single Frequency ◽  
Baseline Length ◽  
Fast Fourier Transformation ◽  
Good Opportunity ◽  
Satellite Navigation System ◽  
Length Constraint ◽  
Single Epoch

The Single-frequency Single-epoch double-differenced baseline resolution technique of Global Positioning System (GPS) provides a good opportunity for monitoring the displacement or deflection behavior of bridges under different loading conditions in real-time. However, for single GPS, a high success rate baseline solution is difficult to achieve due to the lack of sufficient visible satellites and the low accuracy of float solutions. Galileo Satellite Navigation System (Galileo) has 14 medium earth orbit satellites (as of May 2018) that can be used to supplement GPS. The frequency bands of Galileo overlap with that of GPS on E1/L1 and E5a/L5, which is conducive to the combination of observations in integration positioning. Accordingly, Galileo augmenting GPS is an effective and necessary approach to improve the positioning availability and reliability. Moreover, using the baseline length constraint can improve the accuracy of float solutions, narrow the search space, and finally increase the success rate of ambiguity resolution and positioning. The single-frequency single-epoch double-differenced GPS/Galileo mathematical model with baseline length constraint is deduced in this paper. Two sets of GNSS real bridge data were used for further analysis on the improvement of GPS/Galileo with baseline length constraint when compared to single GPS. Finally, a Fast Fourier Transformation (FFT) algorithm was adopted for precisely detecting the local dominant frequencies of XB, YB, and ZB direction of the two stations.

The dynamic monitoring of benefit/risk balance in the system of pharmacological control

2018 ◽  
Vol 26 (6) ◽  
Author(s):  
Milchakov K. S. ◽  
◽  
Kosagovskaya I. I. ◽  
Kobiyatskaya E. E. ◽  
Rosalieva Yu. Yu. ◽  
...  
Keyword(s):  
Dynamic Monitoring ◽  
Risk Balance ◽  
Pharmacological Control

Innovative approaches to operational treatment of women of reproductive eligibility age with hyperplastic processes of the endometrium

2016 ◽  
pp. 41-45
Author(s):  
V.N. Goncharenko ◽  
Keyword(s):  
Endometrial Hyperplasia ◽  
Histopathological Examination ◽  
Intraoperative Complications ◽  
Transvaginal Ultrasound ◽  
Treatment Algorithm ◽  
Hormone Treatment ◽  
Endometrial Ablation ◽  
Reproductive Age ◽  
Dynamic Monitoring ◽  
Atypical Form

The aim of the study: was improvement of results of surgical treatment of patients of reproductive age eligibility with hyperplastic processes of endometrium (HPE) through the introduction of individualized treatment algorithm with the use of monopolar radio wave and hysteroscopic endometrial ablation. Materials and methods. The study included 62 women with non-atypical form of hyperplasia of the endometrium who were treated at the Center of General gynecology of the clinical hospital «Feofania», gynecological Department at the city maternity hospital № 3 of Kyiv. Depending on the age group, nature of the pathological process and method of treatment is randomized, the distribution of women according to groups: group 1 – 41 women's reproductive eligibility age netipichnaya forms of endometrial hyperplasia (PHEBA and KGEB), who were subjected to hysteroscopic monopolar endometrial ablation; group 2 – 21 female reproductive eligibility age netipichnaya forms of endometrial hyperplasia (PHEBA and KGEB), which was held radiowave ablation of the endometrium (RHAE). In the 1st group the age of patients ranged from 42 to 54 years, mean age was 49.9±4.7 years. In the 2nd group the age of patients ranged from 41 to 53 years, mean age of 51.6±4.3 years. Results. A comparative analysis of the techniques for hysteroscopic monopolar ablation and RHEE showed the fact that for RHEE used local anesthesia, while carrying out hysteroscopic monopolar ablation was necessary intravenous anesthesia. The duration of the hysteroscopic monopolar endometrial ablation was 28.6±5.5 min, RAE – according to the standard method – 44.3±0.3 min. When performing hysteroscopic monopolar endometrial ablation in 2 patients (3.7%) patients observed the signs of intravasation of fluid, increased blood pressure and tachycardia. This syndrome was successfully docked, but in the future, women have conducted a thorough examination. When you run RHAE intraoperative complications have been identified. Conclusion. 1. Women with netipichnaya forms of endometrial hyperplasia eligibility and late reproductive age who do not have reproductive plans as an alternative to hysterectomy, in the presence of contraindications or ineffectiveness of hormone treatment may be recommended or radiowave monopolar hysteroscopic ablation of the endometrium. 2. Monopolar hysteroscopic endometrial ablation is indicated for women with netipichnaya forms of endometrial hyperplasia, can be used in the presence of submucous form of uterine fibroids, postoperative scars on the uterus, but in the absence of adenomyosis II–III degree. The effectiveness of monopolar hysteroscopic endometrial ablation in women with non-atypical form of hyperplasia of the endometrium is 87.8%. 3. Women after endometrial ablation should be under observation for two years. The method of choice for dynamic monitoring of the condition of the uterus in women who underwent endometrial ablation is transvaginal ultrasound which should be performed after 1, 3, 6, 12 and 24 months of follow up. 4. In case of recurrence of hyperplastic process of the endometrium (bleeding, thickening of the M-mode echo according to the ultrasound) shows a hysteroscopy with a mandatory histopathological examination and verification of the diagnosis. Key words: endometrial hyperplasia, women eligibility age, women of reproductive age, ablation of the endometrium.

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