14,048 research outputs found
Place making versus place marketing: Implications of the Main Street approach to neighborhood commercial revitalization
No full textRenewed attention to neighborhood commercial revitalization in the United States represents a holistic approach to neighborhood revitalization and the
recognition of small business in the local economy. As tourism and real estate development become central elements in the new urban economy, these
neighborhood shopping districts also carry potential utilitarian value as "sense of place" becomes an important amenity to attract visitors and potential residents. Using the Baltimore Main Streets program as a case study, this dissertation explores the increasing attention from the local government in organizing
commercial revitalization activities using the "Main Street Approach". Through a mixed-method approach, this study situates the popularity of the program in the
neoliberal context and examines the program implementation and potential impact. The popularity of this program in cities is built upon its four targeted areas of change—design, promotion, organization and economic restructuring— by engaging the third sector in economic development at the very local level,
primarily through historic preservation and event promotion. The program responds to the neoliberal market-oriented context where competition and self-help
are essential to achieve institutional and economic efficiency. As a city-wide program, Baltimore Main Streets provides opportunities to incorporate small
businesses into city’s economic development agenda. By developing a Main Street typology, my research reveals the capacity to achieve full program
implementation is highly shaped by the socio-economic conditions of the neighborhoods. Yet with an emphasis on historic preservation, special events, and volunteer participation, this particular approach to commercial revitalization has the potential to promote growth and “open up” neighborhoods to middle class residents and potential investors. By examining property appreciation, I found that program activities may signal that an area is ready to change and therefore boost the desirability of the neighborhood on the real estate market. To make Main Street a true place-making strategy beyond place promotion, it requires the recognition of neighborhood structural difference and allocates resource accordingly to revitalize the districts in all dimensions.Ph.D.Includes bibliographical referencesby Hsiu-Tzu Chan
白金微粒/Ru錯合物/高分子薄磨修飾電極之製備及其電催化應用
No full text[[abstract]]Membrane-metal modified cells are usually applied to the field of membrane cells, such as fuel cells, light cells… etc. Some hydrogen evolution catalysts, for example Pt metal, are used as the cathodes in these cells. Therefore, in this research, we try to dose a series of Ru complexes into the intervals between the cathode and the thin film electrode to improve the hydrogen evolution efficiency of the membrane-metal modified cells.
Ru complex (chosen from Ru(bpy)2phenNH2, Ru(dmb)2 phenNH2, Ru(tmb)2phenNH2, Ru(bpy)2Cl2, Ru(dmb)2Cl2, Ru(tmb)2Cl2) doped Nafion solution was drop-coated onto glassy carbon (GC) electrode and formed a thin film after drying. Then, the GC electrode was immersed into H2PtCl6 solution, and the Pt/Ru complex/polymer modified electrode was obtained by reducing Pt with a DPTB method. Different amount of Pt was electroplated on the GC electrode even at the same conditions (the same potential, the same time interval) when different consistency or kinds of Ru complexes were used, suggesting the influence of the ligands on the red-ox property of Ru complexes. The effective surface area (estimated by CV method) of Pt in the modified electrode is also varied with different species of Ru complexes, which in turn affect on the efficiency of hydrogen evolution.
Furthermore, from the information obtained by SEM and EDS, the alignment and the density of Pt particles growing on the GC electrode are figured out. From the fluorescence lifetime and luminescence spectra, a good electron-transfer is considered to have occurred between D series Ru complexes and Pt modified electrode that explained why a high hydrogen evolution efficiency has been obtained. The modified electrodes are still stable one month after fabricated and their hydrogen evolution efficiency was as good as a newly prepared one.
Diurnal variation of methane emission from paddy fields at different growth stages of rice cultivation in Taiwan
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