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1 – 10 of 536Daniel A. Porter, Nicholas Davis, Paul S. Krueger, Adam L. Cohen and David Son
Techniques of extrude and cure additive manufacturing for thermally cured, high viscosity and medical-grade silicone are investigated by using a small ram extruder and a…
Abstract
Purpose
Techniques of extrude and cure additive manufacturing for thermally cured, high viscosity and medical-grade silicone are investigated by using a small ram extruder and a near-infrared (IR) laser. The purpose of this study is to evaluate the process parameter effects on the stiffness of the final products.
Design/methodology/approach
Process parameter effects on axial stiffness values and durometer are explored. Parameters such as extrusion layer height, laser speed, laser current, laser raster spacing and multiple laser passes were investigated and compared to traditional cast and cure methods. Dimensional changes were also recorded and compared.
Findings
Tensile and durometer tests show that certain curing parameters give tensile stress and durometers within 10 per cent of bulk material specifications at 200 per cent strain. Parameters that had the highest impact on tensile stress at 200 per cent strain were layer height (0.73 per cent) followed by laser power (0.69 per cent), and then laser raster spacing (0.45 per cent). Parameters that had the highest impact on durometer were laser power (1.00 per cent), followed by layer height, (0.34 per cent) and then laser raster speed (0.32 per cent). Three-dimensional printed samples had about 11.2 per cent more shrinkage than the bulk cast samples in the longest dimension.
Originality/value
This paper is one of the first that demonstrates near IR laser curing parameter effects on three-dimensional printed, commercial off-the-shelf, medical-grade and viscous silicone. The ability to cure very viscous thermosets locally enables interesting technologies such as wire encapsulation, high voltage actuators and drug delivery devices.
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Dwayne Devonish, Philmore Alleyne, Wayne Charles‐Soverall, Ayanna Young Marshall and Paul Pounder
The purpose of the paper is to highlight the need for Caribbean scholarship to advance and test social psychological models that speak to current entrepreneurial realities on the…
Abstract
Purpose
The purpose of the paper is to highlight the need for Caribbean scholarship to advance and test social psychological models that speak to current entrepreneurial realities on the ground which have implications for theory, education, practice and public policy. It tests a revised entrepreneurial intentions‐based model by examining the impact of several socio‐cognitive predictors.
Design/methodology/approach
Using a structural equation modelling approach, a revised model of entrepreneurial intentions is tested based on a survey of 376 university students from a Caribbean university.
Findings
The chi square difference results reveal that when compared with the proposed (revised) model, a previous model advanced by Krueger is found to be the most suitable model in explaining entrepreneurial intentions.
Research limitations/implications
The cross‐sectional design of the study does not permit causal statements to be made regarding the variables examined. There is a call for longitudinal research to further examine the causal links between relevant variables in entrepreneurial models.
Practical implications
This paper has strong practical value in that the results can assist students, educators, and present entrepreneurs in understanding the dynamics and processes involved in entrepreneurial decision‐making. This understanding can promote the development and maintenance of further entrepreneurial ventures in the Caribbean.
Originality/value
The paper also has a strong theoretical value as it relies on several socio‐cognitive explanations of human behaviour, and seeks to advance the theoretical field by using more rigorous analyses.
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Kari Bosma, Audrey C. Rule and Karla S. Krueger
Graphic novels can contribute to effective content area reading on social studies topics such as the American Revolution. This action research study’s purpose was to examine…
Abstract
Graphic novels can contribute to effective content area reading on social studies topics such as the American Revolution. This action research study’s purpose was to examine student recall of facts, enjoyment of reading, and interest in the topic when using graphic novels as compared to illustrated nonfiction prose in social studies content area reading. Twenty-two fifth grade students (13 females, 9 males) in a public school in a Midwestern state participated in the study. Half of the students read about the Boston Massacre and Patrick Henry through graphic novels and read about Paul Revere and the Boston Tea Party with illustrated nonfiction texts, with the other half doing the opposite. The mean number of correct ideas recalled by students two weeks after reading two books in the graphic novel condition was 8.6 compared to 7.1 for the nonfiction prose condition with a medium effect size. Students rated their reading enjoyment significantly higher in the graphic novel condition indicating that graphic novels should be employed more often into the school curriculum. Suggestions for integrating graphic novels into the curriculum are provided along with other ways to take action.
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This paper reconstructs the clash between William Baumol’s and Paul Samuelson’s different approaches to the history of economic thought, disguised as a debate on the Marxian…
Abstract
This paper reconstructs the clash between William Baumol’s and Paul Samuelson’s different approaches to the history of economic thought, disguised as a debate on the Marxian transformation problem on the pages of the Journal of Economic Literature in 1974. The published papers were the result of an intense exchange of letters that shows how the debate on the transformation problem is just the surface: the debate originated from the authors’ different approaches to the history of economic thought. Samuelson applied his famous “Whig” history of economics to suggest that Marx had little to nothing to offer to modern theorists, while Baumol was interested in the past authors’ theoretical and moral intentions. Baumol and Samuelson’s Methodenstreit resulted in two different visions of Marx, and there is evidence that they kept their different approaches for their entire career.
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Gabi Kaffka and Norris Krueger
This chapter sets forth how and why diary data analysis can help significantly advance inquiry into the intersubjective aspects of entrepreneurial opportunities. We start the…
Abstract
This chapter sets forth how and why diary data analysis can help significantly advance inquiry into the intersubjective aspects of entrepreneurial opportunities. We start the chapter with a presentation of the sensemaking perspective for the study of intersubjectivity in entrepreneurship. Next, we address epistemological limitations of retrospective data collection methods and examine the relevance of real-time, prospective data, specifically diary data, for the study of intersubjective phenomena associated with entrepreneurial activity. Furthermore, we describe our experiences with application of this method to the study of entrepreneurial cognitive development in the context of longitudinal, diary data-based research on this topic. We also address limitations of the diary data collection method and propose future research avenues for studies on intersubjective dimensions of entrepreneurial agency, before concluding this chapter.
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Intellectual humility and religious conviction are often posed as antagonistic binaries; the former associated with science, reason, inclusive universality, and liberal…
Abstract
Intellectual humility and religious conviction are often posed as antagonistic binaries; the former associated with science, reason, inclusive universality, and liberal secularism, the latter with superstition, dogma, exclusive particularity, and rigid traditionalism. Despite popular images of white American evangelicals as the embodied antithesis of intellectual humility, responsiveness to facts, and openness to the other, this article demonstrates how evangelicals can and do practice intellectual humility in public life while simultaneously holding fast to particularistic religious convictions. Drawing on textual analysis and multi-site ethnographic data, it demonstrates how observed evangelical practices of transposable and segmented reflexivity map onto pluralist, domain-specific conceptualizations of intellectual humility in the philosophical and psychological literature. It further argues that the effective practice of intellectual humility in the interests of ethical democracy does not require religious actors to abandon particularistic religious reasons for universal secular ones. Rather, particularistic religious convictions can motivate effective practices of intellectual humility and thereby support democratic pluralism, inclusivity, and solidarity across difference. More broadly, it aims to challenge, or at least complicate, the widespread notion that increasing strength of religious conviction always moves in lockstep with increasing dogmatism, tribalism, and intellectual unreasonableness.
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Hina Munir, Cai Jianfeng and Sidra Ramzan
The purpose of this paper is to extend the existing literature on entrepreneurial intentions (EIs) by employing the integrated model of personality traits and the theory of…
Abstract
Purpose
The purpose of this paper is to extend the existing literature on entrepreneurial intentions (EIs) by employing the integrated model of personality traits and the theory of planned behavior (TPB). It further examines the mediating role of TPB’s dimensions between personality traits and EIs of final-year university students in two diverse economies: China and Pakistan.
Design/methodology/approach
The paper uses a survey method for data collection, administered both in electronic and paper form. The authors use structural equation modeling and the partial least square (PLS) method on a sample of 1,016 students and present PLS path modeling, mediation analysis and multigroup analysis.
Findings
Results reveal several differences regarding personality traits and TPB on EIs across the two countries. The impact of TPB was positive and significant in both countries; however, TPB demonstrated more explaining power in China’s student sample. Using three personality traits (risk-taking propensity, proactive personality and internal locus of control) as antecedents to TPB, the results reveal a stronger influence of personality traits among Chinese students. The mediation of three dimensions of TPB also revealed differences between country samples.
Originality/value
This is the first study of its kind to compare and contrast the differences between EIs in terms of personality and the determinants of planned behavior among university students in two diverse economies. The integrated model is original, supports both TPB and personality factors and provides a valuable perspective through its findings on two culturally diverse Asian countries. By applying the model in two different cultures, this study distinguishes the results for the two economies from those conducted in other economies.
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Recently, the public and academic discussion on elite education and the selection of top performers in Germany has led to a renewed controversy about social exclusion and…
Abstract
Recently, the public and academic discussion on elite education and the selection of top performers in Germany has led to a renewed controversy about social exclusion and inequality. Consequently, the use of terms such as ‘elite’, ‘excellence’ and ‘intellectual giftedness’ have provoked a debate about the necessity, opportunities, and rejection of educational distinctions. This chapter takes a comparative perspective to examine a private boarding school with a rich tradition, and a relatively new state-run public boarding school, examining their status as exclusive educational institutions, including their selection processes, elite aspirations and educational philosophies. The analysis focusses on how the schools construe themselves as elite and how exclusive membership is created and negotiated within the boarding school context. Using a multilevel qualitative approach and empirical data, this chapter offers findings on mechanisms of elite formation in boarding schools between two poles: the reproduction of an existing elite status and the production of elites from scratch. The analyses show the establishment of a distinct composition of students – either selected by milieu affiliation or by cognitive abilities – resulting in specific processes of coherence and distinction within the school communities. Thus, this chapter makes a contribution to a differentiated observation of new educational hierarchies in Germany.
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With the evolution of the WLN‐based Illinois Conspectus over the last decade, it is not unusual for some of us Illinois librarians to consider that earlier Illinois product, The…
Abstract
With the evolution of the WLN‐based Illinois Conspectus over the last decade, it is not unusual for some of us Illinois librarians to consider that earlier Illinois product, The Krueger Manual, to be an antique relic of a long outmoded, once‐exciting, cutting‐edge Illinois experiment. However, there are libraries and library consortia in Illinois and around the country who are quite oblivious to the demise of the Krueger Method. They not only use it, but have evolved it and updated its processes and analysis software. Perhaps more significant is the encouraging frequency with which the client‐centered analyses tools included in the Krueger Manuals are beginning to show up in new assessment projects of all kinds.
Looks at the 2000 Employment Research Unit Annual Conference held at the University of Cardiff in Wales on 6/7 September 2000. Spotlights the 76 or so presentations within and…
Abstract
Looks at the 2000 Employment Research Unit Annual Conference held at the University of Cardiff in Wales on 6/7 September 2000. Spotlights the 76 or so presentations within and shows that these are in many, differing, areas across management research from: retail finance; precarious jobs and decisions; methodological lessons from feminism; call centre experience and disability discrimination. These and all points east and west are covered and laid out in a simple, abstract style, including, where applicable, references, endnotes and bibliography in an easy‐to‐follow manner. Summarizes each paper and also gives conclusions where needed, in a comfortable modern format.
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