A Column Generation Approach to the Capacitated Vehicle Routing Problem with Stochastic Demands

In this article we introduce a new exact solution approach to the Capacitated Vehicle Routing Problem with Stochastic Demands (CVRPSD). In particular, we consider the case where all customer demands are distributed independently and where each customer’s demand follows a Poisson distribution. The CVRPSD can be formulated as a Set Partitioning Problem. We show that, under the above assumptions on demands, the associated column generation subproblem can be solved using a dynamic programming scheme which is similar to that used in the case of deterministic demands. To evaluate the potential of our approach we have embedded this column generation scheme in a branch-and-price algorithm. Computational experiments on a large set of test instances show promising resultsRouting; Stochastic programming; Logistics; Branch and Bound; Dynamic programming

Studying English at Aarhus University: The Unknown Unknowns

This editorial offers some tips for first-year students in the Department of English at Aarhus University. It advices students to get organized, hack their habits, use the library, and write shitty first drafts

Narrative video game aesthetics and egocentric ethics: A Deweyan perspective

This article argues that video gaming allows for player-focused (egocentric) moral experience that can be distinguished from the other-focused (allocentric) moral experience that characterizes literature and film. Specifically, a Deweyan perspective reveals that video games aff ord fi rst-personal rehearsals of moral scenarios that parallel how, in real life, individuals mentally rehearse the diff erent courses of moral action available to them. This functional equivalence is made possible because the aesthetics of video games bear unique affinities to the human moral imagination. However, whereas the moral imagination may be limited in terms of the complexity and vividness of its analog imaginings, the ethically notable video game may draw on the medium’s digital capacities in order to stage elaborate and emotionally compelling ethical rehearsals. The article concludes by applying this perspective to the ethically notable video game Undertale

Obscurantism in Academic Writing: What It Is and Why It Is Bad

Obscure academic writing is vague, ambiguous, jargon-filled, or otherwise difficult to interpret. Obscurantists use such writing to hide the shallowness or incoherence of their ideas. There is value in being able to see through their attempts so that one does not waste one’s time on, for example, the psychoanalytic verbiage of Jacques Lacan. Therefore, this article identifies five recognizable characteristics of obscure—and especially of obscurantist—academic writing. Specifically, obscurantists tend to (1) fail to distinguish between truistic and radical versions of their claims, (2) employ paradoxical formulations, (3) avoid giving examples of their ideas (4), overuse abstract nouns, and (5) insist on their own lucidity. The article concludes by suggesting that the deepest problem with obscure academic writing is that it insulates arguments and theories from criticism

Gregory Currie: Imagining and Knowing: The Shape of Fiction. Oxford: Oxford University Press. 2020

Book revie

Why Publish, and Why Publish in Leviathan: Interdisciplinary Journal in English?

In this editorial, I discuss the reasons why students would want to publish their academic work, as well as the benefits of publishing in Leviathan: Interdisciplinary journal in English specifically. I then introduce the articles in the first issue

Glucagon-like peptide-1: effect on pro-atrial natriuretic peptide in healthy males

The antihypertensive actions of glucagon-like peptide-1 (GLP1) receptor agonists have been linked to the release of atrial natriuretic peptide (ANP) in mice. Whether a GLP1–ANP axis exists in humans is unknown. In this study, we examined 12 healthy young males in a randomized, controlled, double-blinded, single-day, cross-over study to evaluate the effects of a 2-h native GLP1 infusion. Plasma proANP concentrations were measured by an automated mid-region-directed proANP immunoassay and N-terminal pro B-type natriuretic peptide (BNP) on Roche Modular E170. Urine was collected for measurements of sodium excretion. Although GLP1 infusion increased the urinary sodium excretion markedly, there were no significant changes in either proANP or proBNP concentrations. When GLP1 infusion was stopped, sodium excretion declined rapidly. As proANP concentration reflects ANP secretion, our data could not confirm the existence of a GLP1–ANP axis in humans. Especially, the natriuretic effects of GLP1 seem unlikely to be mediated exclusively via ANP

STATISTIKKEN I DEN KOLONIALE FELT, ANTROPOLOGIEN I DET KOLONIALE ARKIV

Refleksionerne i denne position udspringer af feltarbejde foretaget i et arkiv med statistiske data fra de britiske kolonier efter 2. Verdenskrig. Nærmere bestemt var jeg flere gange i det britiske nationalarkiv i Kew i efteråret 2016 og foråret 2017, hvor jeg læste kilder fra og omkring statistikafdelingen i det britiske kolonikontor (Colonial Office) i London, der blev oprettet i 1947.1 Man kan i dette arkivmateriale finde talmateriale om for eksempel migration, befolkningsudvikling og fødevareproduktion, som det britiske imperium brugte til at regere sine kolonier med. Men ud over at afspejle det britiske imperiums begær efter at regere ved brug af statistiske data indeholder selv samme arkiv også kilder, der kan kaste lys over begrænsninger i – og modstanden imod – imperiets forsøg på at skabe data til at regere med

Fluctuation in Sea-Level and Associated Morphological Response: Examples from Denmark

Daten von Pegelbeobachtungen in Dänemark zeigen zwei verschiedenartige Tendenzen des jährlichen Mittelwasserstandes im Verlauf der letzten 90 Jahre. Stationen im nördlichen Teil des Landes zeigen eine fallende Tendenz (—0.39 mm pro Jahr in Hirtshals), während Stationen im südlichen Teil eine steigende Tendenz (+1.08 mm pro Jahr in Fredericia) zeigen. Dieser regionale Unterschied kann zum Teil durch isostatische Landhebung erklärt werden. Es gibt auch eine ausgeprägte saisonale Änderung im Wasserstand: niedriger Wasserstand im Frühjahr und hoher Wasserstand im Herbst. Beispiele von küstengeologischen Konsequenzen dieser Wasserstandvariationen werden besprochen. Die Diskussion befaßt sich auch mit postglazialen Küstenveränderungen in einem Gebiet, in dem die isostatische Hebung auch noch heute andauert.researc