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Objective: To explore the clinical intervention effect of applying Huoxue Jiangu Decoction in the treatment of patients with osteoarthritis. Methods: Research work was carried out in our hospital from December 2018 to December 2019. A total of 100 patients with osteoarthritis received treatment during this period were selected and divided into two groups using random number method. One group was given sodium hyaluronate injection for treatment, which was the control group, and the other group was given Huoxuejiangu Decoction combined with sodium hyaluronate injection, which was the experimental group. The clinical treatment of the two groups of patients was compared and analyzed. Results: The patients' pain levels were compared. There was no significant difference between the groups before the intervention treatment. After treatment, the experimental group score was (3.05±0.55), which was lower than the control group, the improvement effect was more significant, and the difference between the groups was significant (P< 0.05), the experimental group had a better effect. The clinical treatment of the two groups of patients was compared and analyzed. There was no significant difference in the WOMAS index between the two groups before treatment. After treatment, the score of the experimental group was (34.33±6.98), and the improvement rate was (37.45±13.22). After treatment, the score was lower and the improvement rate was higher, which was significantly higher than the control group (P

Objective: To study the effect of knee arthroscopy combined with Liuwei Gubi Pill on degenerative meniscus injury in middle-aged and elderly patients. Methods: A total of 92 middle-aged and elderly patients with degenerative meniscus injury who were treated in our hospital from August 2018 to February 2020 were collected. They were divided into two groups by envelope lottery. Knee arthroscopy was used for the reference group of 46 patients, and they were guided to perform joint function exercises after surgery; 46 patients in the experimental group took Liuwei Gubi Pill on the basis of the reference group, and compared the efficacy of the two groups. Results: The total effective rate of treatment in the experimental group was 97.83%, which was higher than the reference group’s 84.78%. The experimental group’s VAS score at 1st month, 2nd month, and 3rd month after surgery was lower than that in the reference group. The Lysholm score of the experimental group at 1st month, 2nd month, and 3rd month after operation was significantly higher than that of the reference group, and the data of the two groups was compared by P

Traditionally, if full ambiguity resolution is not successful, partial ambiguity resolution (PAR) will be tried. However, identifying which subset of ambiguities to fix is not easy and is still an open problem. Since the actual purpose of most applications is positioning, rather than fixing all or part of the ambiguities, in this research, we are trying to bypass the problem of identifying which subset of ambiguities to fix and provide a partial solution in the coordinate domain for the bias-free case. The basic idea is that with a user-defined failure rate, we can find a group of ambiguity candidates and each will provide one position. The partial solution is constructed based on these positions together with an indicator to show its maximum positioning error with user-defined reliability. In order to meet various user requirements, different kinds of partial solutions in coordinate domain are proposed. Different from the traditional PAR methods, the new method still works with all the ambiguities (i.e. the complete vector), but works with the different possible values that the complete ambiguity vector may take. The validness and applicability of the proposed partial solution are demonstrated-based practical BeiDou triple-frequency observations. Numerical results show that some partial solutions can be more accurate, while others can meet higher reliability or integrity requirement. [ABSTRACT FROM AUTHOR]

A conventional Differential GPS (DGPS) techniques-based velocity and acceleration method (named here as 'DVA') may be difficult to implement in the Antarctic as there is a sparse distribution of reference stations over Antarctica. Thus, in order to overcome the baseline limitations and to obtain highly accurate and reliable velocity and acceleration estimates for airborne gravimetry, a network-based velocity and acceleration determination approach (named here as 'NVA'), which introduces a wide network of stations and is independent of precise clock information, is applied. Here its performance for velocity and acceleration determination is fully exploited by using Global Positioning System (GPS), GLONASS, Galileo and BeiDou observations. Additionally, a standalone receiver-based method named 'SVA', which requires precise clock information, is also implemented for comparison. During static tests and a flight experiment over Antarctica, it was found that the NVA method yields more robust results than the SVA and DVA methods when applied to a wide area network. Moreover, the addition of GLONASS, Galileo and BeiDou systems can increase the accuracy of velocity and acceleration estimates by 39% and 43% with NVA compared to a GPS-only solution. [ABSTRACT FROM AUTHOR]

The network real-time kinematic (RTK) technique uses continuously operating reference stations (CORS) within a geographic area to model the distance dependent errors, allowing users in the area to solve ambiguities. A key step in network RTK is to fix ambiguities between multiple reference stations. When a new satellite rises or when maintenance happens, many unknown parameters are involved in the mathematical model, and traditional methods take some time to estimate the integer ambiguities reliably. The purpose of this study is the single-epoch ambiguity resolution on small-scale CORS network with inter-station distance of around 50 km. A new differencing scheme is developed to explore the full potential of multi-frequency Global Navigation Satellite System (GNSS). In this scheme, a differencing operation is formed between satellites with the closest mapping functions. With the new differencing scheme, tropospheric error can be mostly neglected after the correction, as well as the double-differencing operation. Numerical tests based on two baselines of 49 km and 35 km show that the success rate of ambiguity resolution can reach more than 90%. The single-epoch ambiguity resolution for reference stations brings many benefits to the network RTK service, for example, the instantaneous recovery after maintenance or when a new satellite rises. [ABSTRACT FROM AUTHOR]