Detection of bearing failure in mechanical devices using neural networks

We present a novel time-domain method for the detection of faulty bearings that has direct applicability to monitoring the health of the turbo pumps on the Space Shuttle Main Engine. A feed-forward neural network was trained to detect modelled roller bearing faults on the basis of the periodicity of impact pulse trains. The network's performance was dependent upon the number of pulses in the network's input window and the signal-to-noise ratio of the input signal. To test the model's validity, we fit the model's parameters to an actual vibration signal generated by a faulty roller element bearing and applied the network trained on this model to detect faults in actual vibration data. When this network was tested on the actual vibration data, it correctly identified the vibration signal as a fault condition 76 percent of the time

Optimal Moments for the Analysis of Peculiar Velocity Surveys

We present a new method for the analysis of peculiar velocity surveys which removes contributions to velocities from small scale, nonlinear velocity modes while retaining information about large scale motions. Our method utilizes Karhunen--Lo\`eve methods of data compression to construct a set of moments out of the velocities which are minimally sensitive to small scale power. The set of moments are then used in a likelihood analysis. We develop criteria for the selection of moments, as well as a statistic to quantify the overall sensitivity of a set of moments to small scale power. Although we discuss our method in the context of peculiar velocity surveys, it may also prove useful in other situations where data filtering is required.Comment: 25 Pages, 3 figures. Submitted to Ap

A multiuniversity Internet course collaboration using case methodology : the University of Northern Iowa experience

One professor at the University of Northern Iowa decided to use a unique approach to teach her section of Elementary Curriculum. While five or six sections were taught in the traditional manner, one section, taught by Dr. Bonnie Johnson, and assisted by Dr. Dale Johnson, used an Internet-based, case methodology approach. In the Johnson class, students addressed issues that are facing teachers today; using technology, and communicating with students and faculty on other campuses. To accomplish this, students participated in an Internet course collaboration centered at the University of Virginia. In evaluating the Johnson course, three questions were addressed. They are: Should case methodology be used in teacher education courses?, Should Interdisciplinary teaching be used as a focus for a teacher education course?, Should the Internet be used in teacher education courses

Smelling therapeutic landscapes: embodied encounters within spaces of care farming

The conceptual framework of ‘therapeutic landscapes’ has been used as a means of considering the significance of specific environments, spaces, and places for aspects of health. Building on a growing attention to the sensory elements of spaces of health and wellbeing, this article mobilises empirical research on ‘care farming’ practices to discuss how smellscapes come to be crucial in fulfilling anticipations, imaginations, and expectations of a ‘therapeutic space’. This article highlights how embodied relationships with specific scents can constitute a therapeutic encounter with place, actively influencing practices and engagement with(in) place, and the ways by which place can have a meaningful affect on health

What might decapod sentience mean for policy, practice, and public?

Crump et al. provide eight criteria for evaluating sentience in decapods, with scope for application to other taxa. Their work has attracted the interest of policymakers. This commentary discusses the limitations of conceptual and legal acknowledgement of sentience in chainging practice and public attitudes. More work is needed. Social science may be able to help

Chapter 9 Which Patient Takes Centre Stage?

The growth of personalised medicine and patient partnerships in biomedical research are reshaping both the emotional and material intersections between human patients and animal research. Through tracing the creative work of patients, publics, scientists, clinicians, artists, film-makers, and campaigning groups this chapter explores how ‘patient voices’ are being rearticulated and represented around animal research. The figure of ‘the patient’ has been a powerful actor in arguments around animal research, mostly ‘spoken for’ by formal organisations, especially in publicity material making ethical justifications for the need and funding of medical research. Here, patient voices make corporeal needs legible, gather expectations and resources, and provide the horizon for embodying future hopes. However, the accessibility of digital media, alongside local institutional experiments in openness, is creating alternative spaces for voicing patient interfaces with animal research. On research establishment websites, and elsewhere, patients’ perspectives are emerging in short films, taking up positions as narrators, tour guides, and commentators, inviting the public to follow them into these previously inaccessible spaces. The embodied experience of patients, sometimes severely affected by the current absences in biomedical research, are used to authorise their presence in these places, and allow them to ask questions of animal researchers. The films are powerful and emotional vehicles for voicing patient experiences and opening up animal research. They also refigure the affective responsibilities around animal research, resituating a public debate around ethics within the body of the patient. The future expectations personified in the abstract figure of the patient, are rendered turbulent in the ambiguous corporeal encounter between human and animals undergoing similar experiences of suffering

Embedding Sustainability In The Engineering Curriculum: Meeting The Requirements Of Professional Accreditation

Professional accreditation agencies are increasing requirements on sustainability in engineering education as a response to ethical obligations, industry needs and emerging academic best practice. In 2021, Engineers Ireland increased sustainability requirements in new accreditation criteria. This paper reports on a thematic analysis carried out by Engineers Ireland on the self-assessment and achievement of these new accreditation criteria on sustainability. The analysis was conducted on the self-assessment reports from a large Irish University, referred to as University A hereafter. The results indicate that, for the purpose of meeting accreditation requirements, University A has interpreted sustainability in their programmes as either meeting the UN Sustainability Goals (SDG’s) by mapping modules to the SDG\u27s, or by aligning Programme Area (PA) 7 Sustainability of the Engineers Ireland accreditation criteria with the Engineers Ireland Programme Outcomes (PO\u27s). The paper outlines the main themes and approaches identified across 17 engineering programmes and presents 2 case studies of how sustainability is embedded in engineering curricula in Ireland

"If I Were Not Alexander..." An Examination of the Political Philosophy of Plutarch’s Alexander-Caesar

This thesis examines Plutarch’s Alexander-Caesar. Plutarch’s depiction of Alexander has been long recognised as encompassing many defects, including an overactive thumos and a decline in character as the narrative progresses. In this thesis I examine the way in which Plutarch depicts Alexander’s degeneration, and argue that the defects of Alexander form a discussion on the ethics of kingship. I then examine the implications of pairing the Alexander with the Caesar; I examine how some of the themes of the Alexander are reflected in the Caesar. I argue that the status of Caesar as both a figure from the Republican past and the man who established the Empire gave the pair a unique immediacy to Plutarch’s time. I then examine the argument, made by some, that it is possible to discern in the Parallel Lives a statement of cultural resistance to the Roman Empire. I argue that the affirmative Hellenism which pervades the Lives reflects not so much a cultural resistance to the Roman Empire, but a concern that the Hellenic values that Plutarch valorised should be dominant within the Roman Empire