Discarded: Exploring material stories and movements through participatory, public art interventions

Drawing on DeCerteau’s (1984) philosophy of tactics, which subvert dominant ways of being through creative appropriations of space and behavior, and New Materialist philosophies that offer vitality and agency to non-human objects (Barad, 2007; Bennett, 2004; 2010), this paper explores a three-part series of participatory, public art interventions related to waste, consumption and material relationships. The three installations were distinct but connected, situated in public spaces and corridors as a means of disrupting daily moments while encouraging moments of pause to be with discarded, material objects in playful and creative ways (de Certeau, 1984; Debord, 1956). With these installations we challenged hierarchical perceptions of object matter by encouraging care and attentiveness to these discarded objects through imaginative story-building. This attentiveness to discard objects further invited compassionate ways of being with this matter that may extend to other forms of life matter, in pursuit of more sustainable and socially just practices of being (and becoming). Through a combination of photographs, participant accounts, and materials created during the installations, this article explores the stories of these events and the ways in which such work may open space for arts-based pedagogical encounters (O’Sullivan, 2006)

Super-Fast Distributed Algorithms for Metric Facility Location

This paper presents a distributed O(1)-approximation algorithm, with expected-$O(\log \log n)$ running time, in the $\mathcal{CONGEST}$ model for the metric facility location problem on a size-$n$ clique network. Though metric facility location has been considered by a number of researchers in low-diameter settings, this is the first sub-logarithmic-round algorithm for the problem that yields an O(1)-approximation in the setting of non-uniform facility opening costs. In order to obtain this result, our paper makes three main technical contributions. First, we show a new lower bound for metric facility location, extending the lower bound of B\u{a}doiu et al. (ICALP 2005) that applies only to the special case of uniform facility opening costs. Next, we demonstrate a reduction of the distributed metric facility location problem to the problem of computing an O(1)-ruling set of an appropriate spanning subgraph. Finally, we present a sub-logarithmic-round (in expectation) algorithm for computing a 2-ruling set in a spanning subgraph of a clique. Our algorithm accomplishes this by using a combination of randomized and deterministic sparsification.Comment: 15 pages, 2 figures. This is the full version of a paper that appeared in ICALP 201

Kinetic roughening of vicinal Si(001)

The kinetic roughening behavior of vicinal Si(001) surfaces is studied with scanning tunneling microscopy. By analyzing the height-height correlation function of the Si layers that have been grown we found, in the case of islands growth, an algebraic roughening behavior with a roughness exponent of 0.68 ± 0.05. In the step flow mode, however, we found non-algebraic roughening behavior

Ethanol-water separation by pervaporation

The separation of ethanol-water mixtures is of great importance for the production of ethanol from biomass. Both ultrafiltration and pervaporation processes can be used for the continuous processing of fermentation and separation, The removal of ethanol from the ultrafiltration permeate can be accomplished by pervaporation. Separation of ethanol-water mixtures by the pervaporation process has been investigated. Results are presented for membranes which are preferentially permeable for ethanol and for others which are preferentially water permeable. Details on the preparation of several membrane types (homogeneous, asymmetric and composite) are given. A schematic process diagram is given in which the fermentation of sugars to ethanol is membrane-controlled

Jet production in the D0 experiment: measurements and data-to-Monte Carlo comparisons

A preliminary measurement is presented of the inclusive jet production cross section in pp collisions with the D0 detector using an integrated luminosity of 800 pb-1 of Tevatron RunII data. The cross section is studied as a function of jet pT and rapidity and compared to perturbative QCD predictions in next-to-leading order including two-loop threshold corrections. Also presented is a preliminary measurement of Z/γ∗+jet production based on 950 pb-1. A comparison to the sherpa event generator shows excellent agreement for jet multiplicities and good agreement for the pT spectra of the jets and the Z boson and for the inter-jet angular correlations

Social Network Analysis as a Predictor of Communication Patterns in a Small Group

Few studies have examined interdisciplinary collaboration in primary care using social network analysis. The present study seeks to examine connections among leadership in the Interprofessional Primary Care Institute (IPCI) in order to measure the effect of changes in the network over time, effect of work group collaboration, and centralization on communication patterns within the group. This study involved a secondary analysis, using data from Gathercoal et al.’s (2019) social network analysis (SNA) of the IPCI, and follow-up data collection. Data were gathered via an online survey, meeting records, and collateral information about IPCI. Social connections within the network, specifically eigenvector centrality measures, were calculated using the Cytoscape program. Results showed that individuals in two or more workgroups had more incoming comments while individuals in fewer work groups were more likely to send outgoing comments. Individuals with higher centrality at the beginning of the network participated in fewer workgroups. Members’ eigenvector centrality did not differ significantly at Time 2 as a function of the number of work groups to which they belonged. The present study revealed the importance of influence centrality (e.g., eigenvector centrality) and work group involvement in the IPCI network as it relates to the value and communication patterns of its members. SNA is a valuable method to analyze the interworking of interdisciplinary networks to support and enhance collaboration among diverse professionals in the health sector

A kinematic analysis of the softball batting form of high and low average female batters

The purpose of this study was to conduct a kinematic analysis of selected phases in the softball batting form of eight high school female softball players. [This is an excerpt from the abstract. For the complete abstract, please see the document.