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Considering the e-commerce platform with a self-built logistics system as the decision-making member of E-supply chain system, the research considers the influence on the decision-making of supply chain members under the participation of e-commerce debit rate, and finally realizes the coordination of supply chain through the design of commission coordination mechanism. The article firstly constructs a decentralized decision model and a centralized decision model of the E-supply chain, determines the optimal decision of each member of the supply chain for each model, and compares and analyzes the different decision results; secondly, based on the above, the commission coordination mechanism is designed. The results of the study show that: with the increase of e-commerce deduction rate, the price of logistics service will gradually decrease, the comprehensive service level will gradually increase, and the sales price of goods will gradually decrease; under different decision-making models, there are optimal decisions to make the profit of each member in the E-supply chain system reach the optimum; the commission coordination mechanism can realize the overall coordination of E-supply chain. Finally, numerical analysis is used to verify the conclusions.

Musculoskeletal pain (MSP) is one of the most severe complaints in women undergoing menopause. The prevalence of MSP varied when taking the menopausal state and age factor into consideration. This study investigated the prevalence of MSP in perimenopausal women and its association with menopausal state. The MEDLINE, Embase, Web of Science, and PubMed databases were searched from inception to July 2020, and 16 studies were retrieved for the current meta-analysis. The primary outcome measure was the MSP Odds Ratio (OR). The estimated overall prevalence of MSP among perimenopausal women was 71% (4144 out of 5836, 95% confidence interval (CI): 64%-78%). Perimenopausal women demonstrated a higher risk for MSP than premenopausal ones (OR: 1.63, 95% CI: 1.35-1.96, P=0.008, I2=59.7%), but similar to that in postmenopausal ones (OR: 1.07, 95% CI: 0.95–1.20, P=0.316, I2=13.4%). The postmenopausal women were at a higher risk of moderate/severe MSP than the premenopausal ones (OR: 1.45, 95% CI: 1.21-1.75, P=0.302, I2=16.5%) or the perimenopausal ones (OR: 1.40, 95% CI: 1.09–1.79, P=0.106, I2=55.4%). In conclusion, the perimenopause is a state during which women are particularly predisposed to develop MSP. As to moderate to severe degrees of MSP, the odds increase linearly with age, from premenopause to peri- and then to postmenopause.

In the rheological experiments for natural mafic samples, there will be semi-brittle deformation under lower temperature, and in contrast, there will appear melts between grain boundaries in the sample under higher temperature, and this could greatly affect rheological behaviors of samples. In the published works, the stress exponent n is mostly reliable, and with high recurrence rate, the activation energy Q is, in some extent, reiterative; however, the coefficient A is poor reiterative. We performed creep tests using 6 kinds of samples with different mineral component. The mechanical data shows that it is more complicated for the effect of mineral component to rheology of rocks than physical models based on flow laws of two phase and polyphase aggregates determined by end-member components. For the sample consisting of plagioclase, clinopyroxene, and hornblende, rheological behaviors are controlled by plagioclase and clinopyroxene when the content of hornblende is less than 10%; however, the role of hornblende could become significant for deformation of samples when the content of hornblende is higher than 10%. For the sample with major mineral of plagioclase, quartz, and hornblende, rheological behaviors are dependent on plagioclase and hornblende when content of quartz is less than 10%, but plagioclase with content near 70% will decide the deformation behaviors of samples. In contrast to that, quartz could completely control the creep of samples when its content is higher than 20%. The most effective method to study rheology of mafic granulite is to perform creep tests using natural gabbro (or diabase) as well as using hot-pressed samples prepared from the major mineral components extracted from mafic granulite.

Polarimetric SAR interferometry (Pol-InSAR) combines SAR interferometry (InSAR) and SAR polarimetry (PolSAR), and it helps to the generation of digital elevation models (DEMs) as well as the parameter estimation of natural volume scatters. Baseline is an important concept in conventional InSAR applications. With the introduction of polarization into InSAR, the baseline requirements of Pol-InSAR are different from those of InSAR. In this paper baseline decorrelation, which includes surface decorrelation and volume decorrelation, is firstly analyzed with the random volume over ground (RVoG) model. Then some different considerations in choosing baseline between Pol-InSAR and InSAR are presented. Finally methods of determining Pol-InSAR baseline are given and discussed.