Paula Kirton, Alan Richardson and Brian Agnew
The purpose of this paper is to investigate the effect of changes to fundamental components of concrete; cement type, water/cementitious (w/c) ratio, aggregate size and age, on…
Abstract
Purpose
The purpose of this paper is to investigate the effect of changes to fundamental components of concrete; cement type, water/cementitious (w/c) ratio, aggregate size and age, on thermo-mechanical properties. Understanding the heat transfer properties of construction materials will enable a reduction in energy expenditure and associated CO2 emissions, contributing to a more sustainable built environment.
Design/methodology/approach
Concrete specimens were subject to steady-state heat transfer test methods to determine thermal conductivity and specific heat values. Pore volume of specimens was determined using water displacement method.
Findings
Cement type CEM I produced the lowest thermal conductivity values by a maximum of 30 per cent, cement type group CEM I corresponded to higher pore volumes and lower densities than cement type group CEM II. Specific heat was higher in specimens containing CEM II compared to CEM I, with cement type being the dominant factor that determines the specific heat capacity. The w/c ratio 0.55 provided lowest thermal conductivity values of the w/c ratio specimens, however, w/c ratio had no impact on the specific heat of concrete. Cement type was the most dominant component of concrete of the properties tested.
Originality/value
The paper presents knowledge of the thermal performance of concrete with easily achieved changes to concrete mix design, which can be used alone or combined for maximum effect. Steady-state heat transfer techniques in a low moisture environment combined with pore volume testing, provides originality to the study of the behaviour of cement replacements as previous research has mainly been based on transient techniques. The use of steady-state heat transfer experimentation allows important thermal properties, thermal conductivity and specific heat to be calculated.
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Ralph A. Gigliotti, Brian D. Agnew, Christine Goldthwaite, Surabhi Sahay, Maria Dwyer and Brent D. Ruben
Standard doctoral preparation includes formal training in a specific academic discipline. In some instances, this training includes experience serving on departmental and…
Abstract
Standard doctoral preparation includes formal training in a specific academic discipline. In some instances, this training includes experience serving on departmental and university-wide committees. Structured leadership education, however, is most often a peripheral concern of the graduate school experience. For a significant number of doctoral students, formal leadership education is simply not considered to be of primary importance to the careers to which they aspire within higher education. Recognizing a need for increased leadership preparation in higher education, this chapter aims to highlight one systematic model for leadership education at the doctoral student level, the Rutgers University PreDoctoral Leadership Development Institute (PLDI).
Patrick Blessinger and Denise Stockley
This chapter provides an overview of the challenges, opportunities, and successes facing contemporary doctoral programs. The authors outline the changing dynamics of doctoral…
Abstract
This chapter provides an overview of the challenges, opportunities, and successes facing contemporary doctoral programs. The authors outline the changing dynamics of doctoral studies, including the various degrees that are associated with doctoral programs and the changing demographics of doctoral students. Drawing from aspects of situated learning theory, the authors position the chapters in this volume in relation to learning communities and communities of practice in the ways that reimagine and re-invigorate traditional models of doctoral education.
This chapter harnesses Western conceptions of justice, traditional justifications of social control, and existing social inequalities to frame and fully understand the racial and…
Abstract
Purpose
This chapter harnesses Western conceptions of justice, traditional justifications of social control, and existing social inequalities to frame and fully understand the racial and ethnic disparities which constitute the U.S. juvenile justice system.
Methodology/approach
Juvenile justice system disparities are framed within the theoretical contexts of Western conceptions of justice, traditional justifications of social control, and social inequality. The chapter’s perspective is based on these concepts of justice, social control justifications, and evidence from scholarly research on juvenile justice system disparities.
Findings
Overall, the U.S. juvenile justice system’s racial and ethnic disparities violate fundamental concepts of justice, traditional justifications of social control, and exacerbate existing social inequalities.
Originality/value
Through its utilization of Western conceptions of justice and social control justifications, this chapter offers a relatively unique framework for the examination of the U.S. juvenile justice system’s racial and ethnic disparities. While recognizing the overall quality and significance of disparities research, the chapter asks the reader to take a step back, and look at and think about the broader justice and inequality contexts.
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Education for equity in global development and cultural diversity calls for professional capacity building to perceive diverse perspectives on complex procedures of globalisation…
Abstract
Purpose
Education for equity in global development and cultural diversity calls for professional capacity building to perceive diverse perspectives on complex procedures of globalisation. The discipline of human geography is such a “provider of perspectives”. The purpose of this paper is to propose a historic series of how theories of geography and human development have emerged.
Design/methodology/approach
This paper contributes to education and training by proposing a historic series of how theories of geography and human development have emerged.
Findings
The outcomes of this analysis of geographic paradigms offer options for the management of multicultural education in development. A critical synopsis and a combination of various paradigms on global development seem most promising for a holistic and comprehensive understanding of globalisation.
Research limitations/implications
In particular, recent developments in human geography exhibit rapidly changing paradigms (ironically called “the Latin America of sciences”) and are hence difficult to systematise.
Practical implications
Spaces are understood to be communicational spaces, the substrate of which is enabling communication technologies. The theoretical contemplations of this paper permit to design learning environments, learning styles and related technologies.
Social implications
Perception and understanding of contradicting theories on global (economic and human) development facilitate education fostering multiple cultures of understanding. The author's own professional experience shows that only esteem for all paradigms can provide the full picture. Success means “collective production of meaning”.
Originality/value
Understanding history frees us to reach future consensus.
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Nicholas Kavish and Brian Boutwell
Criminology has produced more than a century of informative research on the social correlates of criminal behavior. Recently, a growing body of theoretical and empirical work has…
Abstract
Purpose
Criminology has produced more than a century of informative research on the social correlates of criminal behavior. Recently, a growing body of theoretical and empirical work has begun to apply evolutionary principles, particularly from life history theory (LHT), to the study of crime. As this body of research continues to grow, it is important that work in this area synthesizes evolutionary principles with the decades of sociological research on the correlates of crime. The paper aims to discuss these issues.
Design/methodology/approach
The current paper reviews the brief history of research applying life history concepts to criminology, providing an overview of the underlying framework, exploring examples of empirically testable and tested hypotheses that have been derived from the theory, discussing cautions and criticisms of life history research, and discussing how this area of research can be further integrated with existing theory.
Findings
A growing body of research has, with relative consistency, associated indicators of a faster life history strategy with aggression and violence in humans and across the animal kingdom. Research into these associations is still vulnerable to genetic confounding and more research with genetically sensitive designs is needed. The use of hypotheses informed by evolutionary insight and tested with genetically sensitive designs provides the best option for understanding how environmental factors can have an impact on violent and criminal behavior.
Originality/value
The current paper provides an updated review of the growing application of LHT to the study of human behavior and acknowledges criticisms and areas of concern that need to be considered when forming hypotheses for research.