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Author: Travis D. Boyce Publisher: University of South Carolina Press ISBN: 9781643364445 Category : Education Languages : en Pages : 0
Book Description
Reassesses the career of Benner C. Turner, the polarizing African American president at South Carolina State College during the civil rights era Travis D. Boyce considers the full sweep of Benner C. Turner's life and career in the context of the contrary pressures of white and Black authority. Borrowing an expression from Michelle Obama's remarks to the 2016 Democratic National Convention, Boyce casts Turner, long-serving president of South Carolina State University, as a steady and measured leader who preserved the limited resources his historically Black institution possessed in the face of often hostile social, political, and economic power structures. Previous accounts of Turner and his SC State presidency portray him as unwilling to criticize the state's white power structure and unable to contend with their open resistance to civil rights. Boyce argues that the modern view of Turner flattens a complex terrain, often relying selectively on hostile sources, underplaying the political constraints on presidents of publicly funded HBCUs in the South. Considering Turner in a richer context, with a deep awareness of Turner's early life formative influences, Boyce provides a more complete critical examination of his leadership in trying times.
Author: Travis D. Boyce Publisher: University of South Carolina Press ISBN: 9781643364445 Category : Education Languages : en Pages : 0
Book Description
Reassesses the career of Benner C. Turner, the polarizing African American president at South Carolina State College during the civil rights era Travis D. Boyce considers the full sweep of Benner C. Turner's life and career in the context of the contrary pressures of white and Black authority. Borrowing an expression from Michelle Obama's remarks to the 2016 Democratic National Convention, Boyce casts Turner, long-serving president of South Carolina State University, as a steady and measured leader who preserved the limited resources his historically Black institution possessed in the face of often hostile social, political, and economic power structures. Previous accounts of Turner and his SC State presidency portray him as unwilling to criticize the state's white power structure and unable to contend with their open resistance to civil rights. Boyce argues that the modern view of Turner flattens a complex terrain, often relying selectively on hostile sources, underplaying the political constraints on presidents of publicly funded HBCUs in the South. Considering Turner in a richer context, with a deep awareness of Turner's early life formative influences, Boyce provides a more complete critical examination of his leadership in trying times.
Author: Friederike Kaiser Publisher: Cuvillier Verlag ISBN: 3736963416 Category : Technology & Engineering Languages : en Pages : 164
Book Description
Wind power and photovoltaic energy play a significant role in sustainable energy systems. However, these two renewable energy sources do not generate electrical energy on demand and are subject to natural fluctuations. Thus, the need for compensatory measures arises. Compressed air energy storage power plants (CAES) are a possible solution to providing negative and positive control energy in the electric grid. However, in contrast to other energy storage devices such as pumped hydro energy storage or batteries, the storage medium compressed air hardly contains any energy (or more precisely: enthalpy). Yet, compressed air storage allows the operation of highly efficient gas turbines, which are not only particularly fast available but also achieve better efficiency than combined cycle power plants used today, as illustrated by the example of the modern gas and steam power plant Irsching with ηtc = 60%from 2011 compared to the 20 years older McIntosh CAES with ηtc = 82.4 %. In this thesis, the calculation methods for the thermodynamics of the CAES process are presented and validated by measured data from the operations of the CAES power plant Huntorf. Both the steady state and the dynamic (time-dependent) analyses of the process take place. The characteristic value efficiency is discussed in detail, since numerous different interpretations for CAES exist in the literature. A new calculation method for the electric energy storage efficiency is presented, and a method for the calculation of an economically equivalent electricity storage efficiency is developed. Consideration is given to the transformation of the CAES process into a hydrogen-driven and, thus, greenhouse gas-free process. Finally, a model CAES system is tested in a 100 % renewable model environment. Consequently, it can be stated that in the steady-state thermodynamic calculation in particular, the consideration of realistic isentropic efficiencies of compressors and turbines is essential to correctly estimate the characteristic values of the process. Furthermore, a steadystate view should always be accompanied by dynamic considerations, since some process characteristics are always time-dependent. The simulation shows that by mapping transient operating conditions, the overall efficiency of the system must be corrected downwards. Nevertheless, in the model environment of a 100 % renewable energy system, it has been shown that a CAES is a useful addition that can provide long-term energy storage.
Author: N.W. Tschoegl Publisher: Elsevier ISBN: 9780080532110 Category : Science Languages : en Pages : 280
Book Description
This book summarizes the salient features of both equilibrium and steady-state thermodynamic theory under a uniform postulatory viewpoint. The emphasis is upon the formal aspects and logical structure of thermodynamic theory, allowing it to emerge as a coherent whole, unfettered by much of those details which - albeit indispensable in practical applications - tend to obscure this coherent structure. Largely because of this, statistical mechanics and reference to molecular structure are, barring an occasional allusion, avoided. The treatment is, therefore, 'classical', or - using a perhaps more appropriate word - 'phenomenological'. The volume almost exclusively deals with 'ideal' systems, given that the treatment of 'real' systems properly belongs in the realm of applied, rather than theoretical thermodynamics. For these reasons, only selected ideal systems are covered. Ideal gases are discussed extensively. The ideal solution is treated as an example of a liquid system. The amorphous ideal rubber serves as an example of a solid. The formalism developed in these sections is a model for the treatment of other, more complex systems. This short structural overview is written in the hope that a knowledge of steady-state theory will deepen readers' understanding of thermodynamics as a whole.
Author: Luigi Naselli-Flores Publisher: Springer Science & Business Media ISBN: 9401726663 Category : Science Languages : en Pages : 403
Book Description
This volume summarises the outcome of the 13th Workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP) on if, and if so under what conditions phytoplankton assemblages reach equilibrium in natural environments. Quite a number of ecological concepts use terms such as: ecological equilibrium, stability, steady-state, climax, stable state, etc. However, these ecological concepts often have been "translations" of scientific theories developed in physics or chemistry but they almost always lack scientific corroboration, the problem being that often these concepts remain vague and they are not formally defined. Here an attempt to formally recognize what "equilibrium" is in phytoplankton ecology is traced. The book also contains papers by leading scientists on the taxonomy of two selected key groups: cryptomonads and filamentous cyanoprokaryotes. This volume is addressed to all those involved in phytoplankton taxonomy and ecology and in ecology itself.
Author: Travis D. Boyce
Author: Travis D. Boyce
Author: Maynard C. Sandford
Author: Thomas J. Horn
Author: 
Author: Sherman F. Booth
Author: United States. National Bureau of Standards
Author: 
Author: Friederike Kaiser
Author: N.W. Tschoegl
Author: Luigi Naselli-Flores