Since 2013, the state has introduced a number of policies to strictly control the number and scale of public hospitals and to control the rapid expansion of public hospitals. After the introduction of this series of policies, the number of public hospitals in China did not continue to grow, but the number of beds in public hospitals continued to grow. This paper uses difference-in-difference (DID) method to analyze the number of public hospitals with the corresponding data of the development of private hospitals after the introduction of the policy, and the results proves that the introduction of relevant policies has an impact on the number of public hospitals, but has a limited impact on the expansion of the scale of public hospitals. At the end of the article, positive policy suggestions are given to the development of hospitals in China, such as controlling the expansion of public hospitals, strictly controlling the number of beds in public hospitals, and vigorously developing private hospitals. Promoting the development of private hospitals is an important economic supplement to China's health care.

Judicial control in administrative law has become a necessity in administrations. Given the significant role it plays in confronting illegal activities and preserving property, money and the security of individuals in society. This research aims to introduce judicial in the United Arab Emirates and discuss the relationship between cause and causation.The descriptive analytical approach was used to study the research problem.the research conclude that cause and causation the most important element that enables the judiciary control the legality of the administration’s decisions. It is of great importance safeguards to protect individuals from abuse of administration by informing the person concerned of the reasons for making the decision, since the administration, in exercising its powers, must respect the set of legal rules established for it in the State.the research recommend that the competent authorities to make causation an essential part of the cause and a failure to render administrative decisions null and void in order to ensure transparency and to affirm the rule of law, with the exception of acts of supreme sovereignty, in order to preserve the supreme interest of the State.

Effective harvesting strategies are crucial for maximizing annual catch and ensuring the sustainability of lobster (Homarus americanus) farming. This paper presents a nonlinear objective programming model to optimize harvesting intensity based on lobster life cycle dynamics and harvesting characteristics. We model the population dynamics of 1-4 year-old lobsters using differential equations to account for natural mortality, spawning, and harvesting effects. Solving the model with LINGO 12.0, we determine that the optimal harvesting intensity coefficient is 17.36, which maximizes annual catch to 3.88 × 10¹⁰ grams. Results indicate that maintaining harvesting intensity around this optimal value balances economic benefits and population stability, ensuring sustainable farm operations.