The Chicxulub crater is the only wellpreserved peak-ring crater on Earth and linked, famously, to the K-T or K-Pg mass extinction event. For the first time, geologists have drilled into the peak ring of that crater in the International Ocean Discovery Program and International Continental Scientific Drilling Program (IODP-ICDP) Expedition 364. The Chicxulub impact event, the environmental calam...

Introduction Maintaining and developing a case-mix system can be a complicated matter requiring years of experience, as well as extensive knowledge of the framework behind it. Because it is a complex task to maintain and develop the system, unintended effects or mistakes may arise from time to time. In addition, it can be difficult to communicate to users of the system what is required before a...

Endogenous Monopsony and the Perverse Effect of the Minimum Wage in Small Firms The minimum wage rate has been introduced in many countries as a means of alleviating the poverty of the working poor. This paper shows, however, that an imperfectly enforced minimum wage rate causes small firms to face an upward-sloping labor supply schedule. Since this turns these firms into endogenous monopsonist...

There is growing scientific evidence that improving the sustainability of consumer products can lead to significant gains in global sustainability. Historically, environmental policy has been managed by bureaucracies and institutions in a mechanistic manner; this had led to many early successes. However, we believe that if policy concerning product sustainability is also managed in this way, ne...

Strong structuration theory is a recent development in social theory that, among other attributes, makes the gap between ontological concepts and empirical research easier to negotiate. Giddens’ structuration theory is a developed ontology-in-general explaining at an abstract level how structure and agency are interrelated, being a duality in which neither can exist without the other. Strong st...

Westudy embeddings of graphs in surfaces up toZ2-homology. We introduce a notion of genus mod 2 and show that some basic results, mostnoteworthyblock additivity, hold forZ2-genus.Thishas consequences for (potential) Hanani-Tutte theorems on arbitrary surfaces.

Four decades ago in Silent Spring, Rachel Carson (1962) wove together a fabric of evidence suggesting that parts of the modern chemical revolution were having unintended consequences, undermining human and wildlife health in unexpected ways. At the time that fabric was more Chantilly lace than Afghan rug, with the scientific pattern defined as much by the holes as by the threads of connecting e...

We explore how integrating into the world economy affects the incomes of manufacturers in less developed countries (LDCs). We show that cutting back trade barriers has asymmetric effects on the incomes of the two typical groups of entrepreneurs. Whereas access to foreign markets benefits those entrepreneurs who are able to run large-scale factories, credit-rationed entrepreneurs running a micro...

This paper describes the results of a formative analysis of a redesigned Augmented Reality (AR) curriculum. The curriculum, Gray Anatomy, was designed based on lessons learned from the design and implementation process of a previous AR curriculum, Alien Contact! The positive and negative impacts of these modifications were evaluated through a qualitative analysis of gameplay and interview video...