Battlefield information is generally incomplete, uncertain, or deceptive. To realize enemy intention recognition in an uncertain and incomplete air combat information environment, a novel intention recognition method is proposed. After repairing the missing state data of an enemy fighter, the gated recurrent unit (GRU) network, supplemented by the highest frequency method (HFM), is used to predict the future state of enemy fighter. An intention decision tree is constructed to extract the intention classification rules from the incomplete a priori knowledge, where the decision support degree of attributes is introduced to determine the node-splitting sequence according to the information entropy of partitioning (IEP). Subsequently, the enemy fighter intention is recognized based on the established intention decision tree and the predicted state data. Furthermore, a target maneuver tendency function is proposed to screen out the possible deceptive attack intention. The one-to-one air combat simulation shows that the proposed method has advantages in both accuracy and efficiency of state prediction and intention recognition, and is suitable for enemy fighter intention recognition in small air combat situations.

As the core process of case-based reasoning (CBR), case retrieval is the foundation for CBR success, and the quality of case retrieval depends on the case similarity measure. We improved the CBR system for aeroengine fault diagnosis by embedding the attitudinal Choquet integral (ACI) and 2-order additive measure to consider attribute interactions and decision makers’ attitudes. The enhanced case retrieval method can not only integrate the local similarity, attribute importance, and interaction between attributes, but also incorporate the attitude of the decision maker, thus producing more comprehensive and reasonable global similarity and high-quality recommendations. An experimental study of aeroengine fault diagnosis and comparisons with other similarity aggregation methods were performed to demonstrate the effectiveness of the proposed method.

Through an analysis of the wetland definition with legal effect, this paper gives an elaboration about a scientific conclusion that the scientific attribute of Baiyangdian Lake, Xiong'an is wetland rather than lake, and further defines the wetland's scientific attributes that are different from lake's. The scientific suggestions on wetland ecological restoration in Baiyangdian Lake are put forward. Finally, the specific measures in and suggestions on ecological governance in Baiyangdian are proposed.

In the history of Chinese art in the 20th century, Chinese and Western cultures have constantly collided with each other and been integrated. Integrating Chinese and Western art creation concepts was a natural choice for a generation of Chinese artists who have received the edification of Chinese and Western cultures and arts. They had an innate reverence for the Chinese traditional culture with profound artistic conceptions. However, they also had a keen appreciation and deep resonance of the Western art, especially the modern art that emphasizes expression of personalities. Zhu Ming is a representative of this group of artists. His talent, diligence and good inheritance from his teacher enable him to fully realize his potential on the basis of the predecessors. He has adhered to the perseverance spirit in art from his apprenticeship to artistic turning, from native land sentiment to Taiji feelings, and from colors of the world to the natural creation. He compares art to self-cultivation, thus showing the artistic realm of pursuing natural laws and finally returning to his heart. Zhu Ming's sculptures have drawn their materials from real life, expressed the philosophy of life, embodied natural charm, absorbed the spirit of nature, had chaotic and uniform expression forms, and shaped into large blocks as if being cut with swords and axes, which has shown the relaxed attitude of Zhu Ming in creating the sculptures. Zhu Ming has created a series of sculptures that contain both profound oriental cultural connotations and unique characteristics. And he is a model of heavyweight in the contemporary inheritance and development of Chinese sculpture art.

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