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For the lack of command and control modeling principles and mechanisms in the current end-to-end campaign tactical level simulation for unmanned air combat, this paper systematically combs and studies the recent research in unmanned air campaign tactical simulation. Combined with the relevant research, this paper explored the principles and methods of different C2 modeling at different simulation levels and established a C2 simulation system suitable for the characteristics of CISE in unmanned air combat. Further, theoretical and practical guidance is provided for innovative demonstration and evaluation methods of CISE through the effectiveness evaluation support of unmanned air combat tasks.

Chitosan was used to change the surface charge of alum sludge into negative charge so as to realize the flocculation removal of algae. The effects of pH, ratio of chitosan and alum sludge, dosage of chitosan and algae density on algal removal performance of modified alum sludge were evaluated by response surface method, and a mathematical model was established. Using the optimization function of response surface software, the parameters of pH, the ratio of alum sludge to chitosan, chitosan dosage, algal density were 7.51, 53.28, 4.51 mg/L and 4.36 x 106 cells/mL, respectively. The removal rate of algae density measured under the optimal conditions was 100. 0%, which was consistent with the predicted results of the model. The flocculation mechanism was mainly that algae cells and modified alum sludge formed floes through electrostatic adsorption, revealed by Zeta potential and SEM. [ABSTRACT FROM AUTHOR]

Furfuryl alcohol as reactant, NaBr as electrolyte and methanol as solvent, 2,5-dimethoxy-2,5-dihydrofuranmethanol, the intermediate of pyromellic acid, was synthesized by electrochemical method. The influence of reaction time, NaBr addition and reaction temperature on the yield was investigated. The results showed that the reaction time and rection temperature had a significant impact on the yield, while the amount of NaBr added had no significant impact on the yield. When furfuryl alcohol 3 g(24 mmol) was added, constant pressure was 15 V, the optimal conditions were reaction time 2.4 h, NaBr addition 1.76 g, reaction temperature - 10 °C, the average current was 0.93 A, and the yield of 2,5-dimethoxy-2, 5-dihydrofuranmethanol is 67.9%. [ABSTRACT FROM AUTHOR]

In recent years, growth hormone and insulin-like growth factors have become key regulators of bone metabolism and remodeling, crucial for maintaining healthy bone mass throughout life. Studies have shown that adult growth hormone deficiency leads to alterations in bone remodeling, significantly affecting bone microarchitecture and increasing fracture risk. Although recombinant human growth hormone replacement therapy can mitigate these adverse effects, improving bone density, and reduce fracture risk, its effectiveness in treating osteoporosis, especially in adults with established growth hormone deficiency, seems limited. Bisphosphonates inhibit bone resorption by targeting farnesyl pyrophosphate synthase in osteoclasts, and clinical trials have confirmed their efficacy in improving osteoporosis. Therefore, for adult growth hormone deficiency patients with osteoporosis, the use of bisphosphonates alongside growth hormone replacement therapy is recommended.

The existing one-time identity authentication technology cannot continuously guarantee the legitimacy of user identity during the whole human-computer interaction session, and often requires active cooperation of users, which seriously limits the availability. This study proposes a new non-contact identity recognition technology based on cardiac micro-motion detection using ultra wideband (UWB) bio-radar. After the multi-point micro-motion echoes in the range dimension of the human heart surface area were continuously detected by ultra wideband bio-radar, the two-dimensional principal component analysis (2D-PCA) was exploited to extract the compressed features of the two-dimensional image matrix, namely the distance channel-heart beat sampling point (DC-HBP) matrix, in each accurate segmented heart beat cycle for identity recognition. In the practical measurement experiment, based on the proposed multi-range-bin & 2D-PCA feature scheme along with two conventional reference feature schemes, three typical classifiers were selected as representatives to conduct the heart beat identification under two states of normal breathing and breath holding. The results showed that the multi-range-bin & 2D-PCA feature scheme proposed in this paper showed the best recognition effect. Compared with the optimal range-bin & overall heart beat feature scheme, our proposed scheme held an overall average recognition accuracy of 6.16% higher (normal respiration: 6.84%; breath holding: 5.48%). Compared with the multi-distance unit & whole heart beat feature scheme, the overall average accuracy increase was 27.42% (normal respiration: 28.63%; breath holding: 26.21%) for our proposed scheme. This study is expected to provide a new method of undisturbed, all-weather, non-contact and continuous identification for authentication.