In humid regions with the monsoon climate, seasonal water shortages and water spills occur alternately because of uneven temporal and spatial distributions of water resources. An optimization model for the in-series reservoir (ISR) with replenishment pumping stations was developed to obtain the minimum annual sum of water shortage and systematically considered the reservoir operation rule of water spill and replenishment. This model features multiple dimensions; dynamic programming (DP) may cause a ‘curse of dimensions’, while the decomposition-coordination method has difficulty in judging logic conditions in the reservoir operation rules. So, an improved decomposition and DP aggregation (DDPA) method was proposed. The proposed model and the method were applied to a real case in the humid region of southern China. Compared to a conventional scheduling method, the water supply was increased by 0.8% and replenishment was reduced by 2.5%. Moreover, a comparison between DDPA and six heuristic algorithms was discussed. All heuristic algorithms' objective function values only obtained local optimal solutions, and the water shortage of the system was 0.12–20.5%. The obtained results demonstrated that DDPA was the better choice for highly complex multi-reservoir systems. The proposed optimization algorithm of this study enriched the optimization theory of multi-dimensional and multi-variable complex systems.

Abstract-As the extending course of musical history, piano art history course is focusing on the developing history of western piano art, of which it has made a detailed arrangement in a macro way. It has also strengthened the understanding of composing style by different composers in different time and regions. In this way, we can know the creating purpose of the composers exactly, which can also help us raise playing skills, express the artistic connotation of the composers' works and perform them much better. What's more, piano art history course is a required theoretical course, which is of great importance for the learning of piano majors.

Abstract-In the border of our motherland, the deep Greater Khingan Range of Heilongjiang, there was a minority. They were Oroqen people who lived on hunting. By the early 20th Century, they still retained their primitive living customs. With the process of modern civilization, they went out of the mountains and lived their life. They started to enjoy the feast of the material civilization. But the ethnic cultures created by their ancestors are lost and faded in the history. So is Oroqen music. It can be said that the traditional music culture of Oroqen is an important part of original music cultures in China. It is the heritage of national art, and has continued elements of anthropology of art, the science of culture and ethics. It is a precious cultural heritage. We should treat and study them seriously.

Abstract-The spread time of Western orchestra is short in China, but it has gradually become an integral part of our social life. We cannot only play one alone, but also play more together. It plays an important role in festival celebration, large party, school performance and other activities. However, it is not easy to set up and train a good orchestra. This paper analyzes the construction, management and training of the orchestras, and discusses the training of orchestra.

The characteristic curriculum is a school-based curriculum which can best embody its unique, stable and high-quality personality in the aspects of teaching ideas, curriculum setting, teaching methods and teaching effects. In local colleges and universities, the characteristic curriculum will have a significant impact on the school running ideology, the emergence of innovative teaching strengths and the shaping of the school image. The training goal of music specialty in local normal universities is to train music talents with modern educational thought, innovative spirit and certain personal professional characteristics. The construction of Olunchun original ecological music course is an important reflection of the characteristic education of music specialty in many local normal universities.