Developing Sustainable Makers

This essay will discuss my developed professional and teaching knowledge of sustainable making processes and how I have used this to focus creative learners on how to explore personal values and strengthen their sustainable making practice

Journeys and Transmission

The Land/Water 2016 symposium, Journeys and Transmission, explores contemporary concerns about our relationship to the world, following the journeys we make as artists and researchers to acquire knowledge and to share an understanding of what it is to be human in the post-industrial era of an increasingly globalized and networked twenty first century. These journeys may be personal - understood as a changing consciousness or a sense of identity and selfhood, or an altered subjective space; conceptual - manifested as a paradigm shift within a philosophical framework or ‘thinking outside the box’; or geographic - driven by social, economic or political imperatives. Using an engaged, critical lens, we consider the ways in which creative practitioners respond to the land and the waters that flow through it, translating sensory or digital data into material forms. In addition, we are interested in the manner in which information is conveyed/transmitted across time and place - from one generation of people to another, questioning the appropriation of the past as evidence for the writing of history in relation to its use as the source of stories in the present. Also of relevance are the ways in which ideas are conveyed between practices, or are reshaped in the transmission from one medium to another, or through combination, creating new hybrid forms that extend aesthetic appreciation and cultural critique into new areas

Geometric isomers of chloro(6-methyl-1,4,8,11-tetraazacyclotetradecane-6-amine)cobalt(III) tetrachlorozincate(II)

The crystal structures of a pair of cis and trans isomers of the macrocyclic chloropentaamine title complex, as their tetrachlorozincate(II) salts, [CoCl(C11H27N5)][ZnCl4], are reported. The two distinct isomeric forms lead to significant variations in the Co-N bond lengths and, furthermore, hydrogen bonding between the complex ions is influenced by the folded (cis) or planar (trans) conformations of the coordinated ligand

trans-Cyano(6-methyl-1,4,8,11-tetraazacyclotetradecan-6-amine)cobalt(III) bis(perchlorate) hydrate and trans-hydroxo(6-methyl-1,4,8,11-tetraazacyclotetradecan-6-amine)cobalt(III) bis(perchlorate)

The crystal structures of a pair of closely related macrocyclic cyano- and hydroxopentaaminecobalt(III) complexes, as their perchlorate salts, are reported. Although the two complexes, [Co(CN)(C11H27N5)](ClO4)2.H2O and [Co(OH)(C11H27N5)](ClO4)(2), exhibit similar conformations, significant differences in the Co-N bond lengths arise from the influence of the sixth ligand (cyano as opposed to hydroxo). The ensuing hydrogen-bonding patterns are also distinctly different. Disorder in the perchlorate anions was clearly resolved and this was rationalized on the basis of distinct hydrogen-bonding motifs involving the anion O atoms and the N-H and O-H donors

Fatigue in Pilots of Remotely Piloted Aircraft Before and After Shift Work Adjustment

The article of record as published may be located at https://doi.org/10.3357/ASEM.2455.2009Remotely piloted aircraft (RPA) with long endurance allow near-continuous operations, necessitating the implementation of shift work for crewmembers to provide the necessary manning of ground control stations. Shift work has a well-known association with fatigue, degraded work performance, and an increased risk for errors and accidents. This study presents the results of a follow-up survey of a particular population of shift-working RPA crewmembers 1 yr after modification of their shift work schedule. Methods: A cross-sectional survey of 66 RPA crewmembers was conducted using a collection of validated fatigue scales. This data was compared to survey data collected a year prior from the same population and from a reference group of non-shift-working aircrew. Shift system features and individual and situational differences associated with fatigue were explored. Additionally, several alternative types of shift schedules were assessed through modeling and simulation. Results: The study found no significant reduction in reported fatigue despite prior modifications to the shift work schedule to increase opportunities for recovery. Months shift working, sleep quality, and disturbances in family and social activities were associated with overall fatigue scores. Approximately half of those surveyed met criteria for occupationally significant fatigue. Months shift working, use of on-duty napping, and fatigue scores were predictive of those with occupationally significant fatigue. Modeling of feasible variants of the current shift work schedule failed to reveal a significantly improved alternative schedule. Conclusions: Collectively, the results demonstrate a persistent problem with chronic fatigue in this study population, likely reflective of continued inadequate opportunities for recovery and restorative sleep

Abnormal peri-operative haemorrhage in asymptomatic patients is not predicted by laboratory testing

The pre-operative identification of individuals at high risk of bleeding during tnajor elective surgery is obviously itnportant. Extensive haemostatic screening is, however, expensive and tnay be inappropriate in low-risk groups. Accordingly, we undertook two studies to detertnine whether it could be justified in patients without a history of abnormal bleeding. In the first of these, 45 of 159 patients were excluded because of aspirin ingestion and a further 3 because of positive bleeding history so that prothrombin time, activated partial thromboplastin time, bleeding time and platelet count were tneasured in 111 asytnptotnatic patients about to undergomajor surgery. A single patient had tnild thrombocytopenia, and 8 had a prolonged partial thromboplastin time; none showed abnormal peri-operative haemorrhage. In the second study, over a 4-month period, 49 patients out of 1 872 required larger peri-operative blood transfusions than anticipated; on investigation, none of these patients was shown to have disturbances in haemostatic mechanism, the transfusion having been indicated for technical reasons. Patients undergoing elective surgery should be asked about medication and previous bleeding and if they have no history thereof and a physical examination is negative, pre-operative screening for coagulation defects would appear to be unnecessary

Plans for High Beta Optics in the LHC

ISBN 978-3-95450-115-1 - http://accelconf.web.cern.ch/AccelConf/IPAC2012/papers/moppc007.pdfInternational audienceBased on what has been learned with the first high β* = 90 m operation in 2011, we describe the potential and practical scenarios for reaching very high β* in the LHC in 2012 and beyond. Very high β* optics require dedicated running time and conditions in the LHC. We describe a plan which is optimized to maximize the physics potential in a minimum of dedicated running time