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Radio frequency (RF) technology relies on the electromagnetic properties of the materials used, which includes their complex permittivities and loss tangents. To measure these properties, techniques for material characterization such as the transmission/reflection method are used in conjunction with conversion techniques to calculate these values from scattering parameters. Unfortunately, these techniques rely on relatively expensive rectangular waveguide adaptors and components, especially if testing over large frequency ranges. This paper aims to overcome this challenge by developing a more affordable test equipment solution based on additively manufactured waveguide sections.

To evaluate the effectiveness of using additively manufactured waveguides to perform electromagnetic characterization with the transmission/reflection method, samples of PLA Tough with varying infill percentages and samples made from several Formlabs photopolymer resins are fabricated and analyzed.

Results show that the method yielded permittivity and loss tangent values for the measured materials that generally agree with those found in the literature, supporting its credibility.

The accessibility of this measurement technique will ideally allow for more electromagnetic material characterization to occur and expand the possible use of additive manufacturing in future RF designs. This work also provides characterization of several Formlabs photopolymer resins, which have not been widely analyzed in the current literature.

Robert Franklin Hoxie was of the first generation of University of Chicago economists, a figure of significance in his own time. He is often heralded as the first of the Institutional economists and the impetus behind the field of labor economics. Yet today, his contributions appear as mere footnotes in the history of economic thought, when mentioned at all, despite the fact that in his professional and popular writings he tackled some of the most pressing problems of the day. The topics upon which he focused included bimetallism, price theory, methodology, the economics profession, socialism, syndicalism, scientific management, and trade unionism, the last being the field with which he is most closely associated. His work attracted the notice of some of the most famous economists of his time, including Frank Fetter, J. Laurence Laughlin, Thorstein Veblen, and John R. Commons. For all the promise, his suicide at the age of 48 ended what could have been a storied career. This paper is an attempt to resurrect Hoxie through a review of his life and work, placing him within the social and intellectual milieux of his time.

From the 1960s onwards, students and members of the academic community on growing numbers of college and university campuses in the United States chose to confront the issue of apartheid by advocating divestment from corporations or financial institutions with any sort of presence in or relationship with South Africa. Student divestment advocates faced serious opposition from university administrators as well as opponents of institutional divestiture both at home and abroad. Despite these challenges, the academic community in the United States was one of the first arenas where anti-apartheid activism coalesced. This chapter examines the campaigns of students and educators who participated in the debate over divestment – to engage with the South African government and apartheid through dialogue and communication or to disengage completely from the country through withdrawal of financial investments. The anti-apartheid efforts of the academic community at Michigan State University, one of the first large research universities in the United States to confront the issue of apartheid and divestment at the university level and beyond, serves as a window to view academic activism against apartheid. The Southern Africa Liberation Committee (SALC), a consortium of students, faculty, and community members dedicated to aiding the liberation struggle of Southern Africa, led the efforts at Michigan State and collaborated with allies across Michigan and the United States. SALC focused most of its efforts on South Africa, though the organization also confronted the issue of South Africa's controversial occupation of South West Africa and the ongoing civil war in Angola.

The use of artificial intelligence (AI) in management research is still nascent and has primarily focused on content analyses of text data. Some method scholars have begun to discuss the potential benefits of far broader applications; however, these discussions have not led yet to a wave of corresponding AI applications by management researchers. This chapter explores the feasibility and the potential value of using AI for a very specific methodological task: the reliable and efficient capturing of higher-level psychological constructs in management research. It introduces the capturing of basic emotions and emotional authenticity of entrepreneurs based on their macro- and microfacial expressions during pitch presentations as an illustrative example of related AI opportunities and challenges. Thus, this chapter provides both motivation and guidance to management scholars for future applications of AI to advance management research.

The classics will circulate wrote a public librarian several years ago. She found that new, attractive, prominently displayed editions of literary classics would indeed find a substantial audience among public library patrons.

Knowledge sharing has become an integral part of organizations’ business strategies, along with aiding organizations to grow and innovate in the market, and gain competitive advantage. This paper aims to concentrate on the role of tacit knowledge sharing in fostering innovation capability of an organization. Specifically, the study considers social capital (relational, cognitive and structural) as an important precursors to tacit knowledge sharing, which in turn, influences innovation capability of an organization. The study further discusses the role that knowledge reciprocation plays in successful tacit knowledge sharing. The relation between knowledge quality and innovation capability is also discussed in the paper.

The investigation started with a review of extant literature in the field of knowledge sharing and innovation to derive a set of constructs. A set of hypotheses was developed based on the identified constructs, which was subsequently validated through a primary survey based on a structured questionnaire on a sample size of 190 respondents from the Indian industrial domain. The survey responses were subsequently analysed using the statistical technique of structural equation modeling and conclusions were drawn from the findings. Additionally, careful attention was paid in eliminating the common method bias, which is often associated with a primary survey.

A set of six hypotheses were derived based on the identified constructs and were subsequently validated. While validating the hypotheses, it was observed that while knowledge reciprocity, relational social capital and cognitive social capital was positive associated with tacit knowledge sharing, structural social capital did not have a significant effect on the same. Additionally, it was also observed that both tacit knowledge sharing and the quality of knowledge were positively associated with innovation capability.

The present day business marked by intense competition requires firms to be more aware of their innovative capabilities. Effective sharing of knowledge or information can be deemed as a vital component in achieving this objective. Organizations that practice and nurture innovation activities can use the findings of the current study as a part of their knowledge management strategy. In addition to using the explicit knowledge, which are structured in nature, organizations can also start using tacit knowledge to harness their innovation potential – and the findings from the current study can act as a motivational tool for them to do so.

Although there is a growing body of literature concerning the role of knowledge management in innovation, there still a dearth in discussing the role of tacit knowledge sharing in exploiting the innovation capability of an organization. The main discussion of this paper brings together a set of important constructs that exhibits the significant role that tacit knowledge sharing plays in determining the innovation capability of an organization. Furthermore, it tries to marry the concepts of social capital and tacit knowledge sharing with innovation capability, therefore adding significantly to the body of literature in knowledge management as well as innovation.

There now appears to be a real prospect that the present chaos will give place to a well‐ordered set of enactments. In the House of Lords there has been introduced by the Lord Chancellor a Food and Drugs Bill, which is a purely consolidating measure of 137 clauses and twelve schedules, designed to replace virtually all existing Food and Drugs statutes dealing with England, Wales and Northern Ireland (without amending their substance), and in particular to repeal wholly the Food and Drugs Act, 1954. In the House of Commons the Food and Drugs (Scotland) Bill, which is both an amending and consolidating measure—has for the third time been launched on its Parliamentary career. Meanwhile, much progress as been made with the preparation of the promised Regulations, which, before this note appears in print, will have received some consideration from the Food Hygiene Advisory Council. And, simultaneously, the contemplated revision and enlargement of Codes of Practice appear to be near completion. We know of no reason why all these operations should not be completed before the end of the present year. One of the important matters to be settled is the way in which the Minister of Health will exercise his discretionary powers in relation to the local governing bodies which will be Food and Drugs Authorities.