Participatory budgeting has become an important element of empowerment of the residents in the process of spatial planning in Polish cities. The citizens gained the right and a concrete tool to implement their ideas on how to change the city spaces. Many of the projects of participatory budgeting are the results of serious negligence in basic infrastructure in the cities. On the other hand, some of them are an expression of great ingenuity and innovative approach of the citizens to the modernization and arrangements in urban spaces. The civic projects improve quality of life and increase the utility value of public spaces. The main aim of the paper is to review and classify tasks changing public spaces under the formula of participatory budgeting. The research in a form of diagnosis enables to present the directions of participatory budgeting. It helps to monitor and evaluate the social impacts in the process of city space transformations. The subject of analysis are participatory budgets in Łódź and Katowice based on editions in 2015/2016 and 2016/2017.

Iterative learning control is a technique especially developed for application to processes which are required to repeat the same operation over a finite duration. The exact sequence of operation is that the task is completed, the process is reset and then the operation is repeated. Applications are widespread among many industries, e.g. a gantry robot which is required to place items on a conveyor under synchronization as part of a food manufacturing process. In effect, iterative learning control exploits the fact that once a single execution of the task is complete then the input control action and output response produced are available to update the control input for the next trial and thereby sequentially improve performance. Moreover, it may be possible to undertake the required computations during the time between completing one trial and the start of the next. This paper gives an overview of some very significant recent progress in this general area, including results from experimental benchmarking, and also some areas for on-going/future research are outlined.