Collaborative governance: refers to the working model of government departments to carry out social management activities in cooperation with non-governmental, non-profit social organizations and the general public in order to achieve the goals of public interest. Which of the following are collaborative management? ['There are multiple sub-district offices in a city, each sub-district has jurisdiction over an area, and some street service centers have specially set up green channels to provide public welfare services for the elderly and the disabled.', 'The student union of a university has repeatedly organized college students to go into the community, conducted psychological consultations, fire safety lectures, and helped public welfare activities such as the elderly.', "To create a hygienic city, a city's health bureau, environmental protection bureau, and urban management bureau work together, and health and epidemic prevention personnel, environmental monitoring personnel, sanitation workers and urban management personnel perform their duties and work actively.", 'In order to ensure the smooth and safe transportation of urban buses in a certain city, each bus station is equipped with public security inspectors. This personnel includes members of various functional departments, members of volunteer associations, and retirees.']