Matching Items (2)
Filtering by

Clear all filters

156546-Thumbnail Image.png

The effects of urban density on the efficiency of dockless bike sharing system: a case study of Beijing, China

Description
Bicycle sharing systems (BSS) operate on five continents, and they change quickly with technological innovations. The newest “dockless” systems eliminate both docks and stations, and have become popular in China since their launch in 2016. The rapid increase in dockless system use has exposed its drawbacks. Without the order imposed…

Bicycle sharing systems (BSS) operate on five continents, and they change quickly with technological innovations. The newest “dockless” systems eliminate both docks and stations, and have become popular in China since their launch in 2016. The rapid increase in dockless system use has exposed its drawbacks. Without the order imposed by docks and stations, bike parking has become problematic. In the areas of densest use, the central business districts of large cities, dockless systems have resulted in chaotic piling of bikes and need for frequent rebalancing of bikes to other locations. In low-density zones, on the other hand, it may be difficult for customers to find a bike, and bikes may go unused for long periods. Using big data from the Mobike BSS in Beijing, I analyzed the relationship between building density and the efficiency of dockless BSS. Density is negatively correlated with bicycle idle time, and positively correlated with rebalancing. Understanding the effects of density on BSS efficiency can help BSS operators and municipalities improve the operating efficiency of BSS, increase regional cycling volume, and solve the bicycle rebalancing problem in dockless systems. It can also be useful to cities considering what kind of BSS to adopt.
ContributorsCui, Wencong (Author) / Kuby, Michael (Thesis advisor) / Salon, Deborah (Committee member) / Thigpen, Calvin (Committee member) / Arizona State University (Publisher)
Created2018
154166-Thumbnail Image.png

Notes from the underground: explorations of dissent in the music of Czech-born composers Marek Kopelent and Petr Kotík

Description
Since the collapse of the Soviet Union, musicologists have been delving into formerly inaccessible archives and publishing new research on Eastern Bloc composers. Much of the English-language scholarship, however, has focused on already well-known composers from Russia or Poland. In contrast, composers from smaller countries such as the Czech Republic…

Since the collapse of the Soviet Union, musicologists have been delving into formerly inaccessible archives and publishing new research on Eastern Bloc composers. Much of the English-language scholarship, however, has focused on already well-known composers from Russia or Poland. In contrast, composers from smaller countries such as the Czech Republic (formerly Czechoslovakia) have been neglected. In this thesis, I shed light on the new music scene in Czechoslovakia from 1948–1989, specifically during the period of “Normalization” (1969–1989).

The period of Normalization followed a cultural thaw, and beginning in 1969 the Czechoslovak government attempted to restore control. Many Czech and Slovak citizens kept their opinions private to avoid punishment, but some voiced their opinions and faced repression, while others chose to leave the country. In this thesis, I explore how two Czech composers, Marek Kopelent (b. 1932) and Petr Kotík (b. 1942) came to terms with writing music before and during the period of Normalization.
ContributorsJohnson, Victoria K (Author) / Feisst, Sabine (Thesis advisor) / Oldani, Robert (Committee member) / Rockmaker, Jody (Committee member) / Arizona State University (Publisher)
Created2015