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In this paper, we explore the price dynamics of 16 representative records of USA Education Group stocks, encompassing two non-overlapping periods (before, during, and after COVID-19). Based on information theory and cluster analysis techniques, our study provides insights into disorder, predictability, efficiency, similarity, and resilience/weakness, considering the most diverse financial stakeholders. Our findings contribute significantly to understanding price dynamics in the education sector, encompassing non-crisis and crisis periods, and provide valuable information for financial risk management, highlighting the importance of considering financial assets’ efficiency and resilience/weakness during economic turbulence, such as the COVID-19 crisis.

Forearm rotation is a key function in the upper extremity. Following distal radius fracture, residual disability may occur in tasks requiring forearm rotation. The objectives of this study are to define pronation and supination strength profiles tested through the range of forearm rotation in normal individuals, and to evaluate the rotational strength profiles and rotational strength deficits across the testing range in a cohort of patients treated for distal radius fracture associated with an ulnar styloid base fracture. In a normative cohort of 29 subjects the supination strength profile showed an increasing linear relationship from supination to pronation. Twelve subjects were evaluated 2-4 years after anatomical open reduction and volar plate fixation of a distal radius fracture. The injured wrist was consistently weaker (corrected for hand dominance) in both supination and pronation strength in all testing positions, with the greatest loss in 60 degrees supination. Mean supination strength loss across all testing positions was significantly correlated with worse PRWE scores, highlighting the importance of supination in wrist function.

In order to find the relationships between leaf elements contents and phenomenon of growing weakness of plant, the variation of thirteen mineral elements in pine needles were determined at the period from well growth to weak growth for six consecutive years. Twelve elements consisting toxic metals (Pb, Cr, and Cd) and essential mineral elements (P, K, Fe, Mn, Cu, Zn, Ca, Mg and Na) were analyzed using inductively coupled plasma atomic emission spectroscopy (ICP-AES), and the N content was analyzed using automatic azotometer (KDY-9820 type). The results showed that there were no significantly variatation in elements N, K, Ca, Mg and Fe between normal and abnormal growing trees. However, the sharply increase of Na and toxic heavy metal Cr, and the gradually decrease of trace elements such as Mn, Cu, Zn, and further the rising of P year by year in pine needles might had much more relationships with the weak growth of Pinus tabulaeformis. The correlations of each element could be used to improve the ratios of different element in order to make plant grow well.