Minimum information loss fusion in distributed sensor networks

A key assumption of distributed data fusion is that individual nodes have no knowledge of the global network topology and use only information which is available locally. This paper considers the weighted exponential product (WEP) rule as a methodology for conservatively fusing estimates with an unknown degree of correlation between them. We provide a preliminary investigation into how the methodology for selecting the mixing parameter can be used to minimize the information loss in the fused covariance as opposed to reducing the Shannon entropy, and hence maximize the information of the fused covariance. Our results suggest that selecting a mixing parameter which minimizes the information loss ensures that information which is exclusive to the estimates from one source is not lost during the fusion process. These results indicate that minimizing the information loss provides a robust technique for selecting the mixing parameter in WEP fusion

The Mask Strikes Back: Blackness as Aporia in Moby-Dick and Benito Cereno

What is the American Gothic a reaction to? Whereas other thinkers such as Nathaniel Hawthorne locates the building blocks of the American Gothic in Puritan Christianity or Amerindian Genocide, I argue that Melville posits the genesis of chattel slavery and the construction of racial category as the repressed events that haunt the Americas and return uninvited. By using the Gothic motif of the living corpse, the famed writer of Moby-Dick addresses the social bereavement which Blackness comes to represent in the Americas. By looking for truth on the skin and flesh, the main characters of Moby-Dick and “Benito Cereno” represent the Enlightenment precept that truth can be arrested via observation and interpretation. Melville presents two Black characters as impasses in this project of interpretation: Moby-Dick’s drowned boy, Pip, and “Benito Cereno’s” undead leader, Babo

Black Praxis: The Trace of Jamesian Pragmatism in DuBoisian Scholar Activism

Philosophy and activism formed a mutualist relationship in regards to 20th-century Black American politics. Emancipatory theories undergirded the civil disobedience and reformist action of the entire century. W.E.B. DuBois, renowned African-American academic at the forefront of American and Pan-Africanist liberation movements, is often divorced from his originary philosophical roots. As he became the first Black PhD graduate of Harvard University, his mentor was philosopher and psychologist William James. James is the forefather of American Pragmatism, a school of thought still alive and dynamic in this day. DuBoisian scholars tend however to stress the German Idealist influences on DuBois’s thought. Informed by protracted and ongoing theoretical and journalistic research, my project aims to locate the trace of Jamesian Pragmatism in DuBois’s scholar activism. I argue that DuBois’s struggles with Pragmatism engendered a way of thinking that resembles Marxist thought before DuBois ever went to Berlin. Further, DuBois’s idealist revision of Jamesian logic informs his pre-NAACP activism with the Niagara Movement. All in all, my research shows how, despite his disagreements with his mentor, DuBois does not quite disavow pragmatism throughout this very political academic career. This research was funded by the Andrew W. Mellon Foundation and was guided by Dr. Scott Hancock of Gettysburg College\u27s History Department

Poetic Witness in a Networked Age

When online videos mobilize protestors to occupy public spaces, and those protestors incorporate hashtags in their chants and markered placards, deliberative democratic theory must no longer dismiss technology and peoples historically excluded from the arena of politics. Specifically, political models must account for the role of repetition in paving the way for unheard and unseen messages and people to appear in the political arena. Drawing on Judith Butler’s theory of the Performative and Hannah Arendt’s Space of Appearance, this paper assesses that critical and generative role of iteration. Repeating unheeded acts performs the capacity for those acts to be entered into discourse. The World Wide Web evidently augments such performativity with features such as accessibility, potential for ‘viral’ proliferation, and an endurance unlike non-networked acts. This paper eventually grapples with the hazards and risks of networked repetition (e.g. desensitization, trivialization, etc.) in order to propose a poetics of repetition to mitigate those dangers. Such poetics ultimately distinguishes the witness from the spectator

The use of composted woodchip as a substrate for growing varieties of edible mushrooms

The world market for edible mycorrhizal mushrooms has experienced considerable growth over the past two decades with annual production estimated to exceed 14 billion USD. The market continues to grow due to interest in the nutritional and health benefits of edible mushrooms. The size of the market for speciality mushrooms has also increased and the overall market trend has been towards fresh rather than canned product. There are a number of different cultural methods in commercial use, with a wide variety of species produced on different substrates. The aim of this project was to evaluate woodchip compost as a substrate to produce edible mushrooms. Woodchip compost appears to have potential as a growing medium but more development is necessary to make this a commercial proposition. This report sets out these findings in more detail

Effects in polarimetry of interference within wave plates

Multiple-beam interference within wave plates is investigated in terms of the detrimental effects it produces in the data of stellar spectropolarimetry. It is noted that spectral fringe structures occur in the phase delay, the polarizance and, for Pancharatnam designs, the reference axis of the wave plate. The natures of the problems are exposed by considering typical wave plates and experimental procedures used in linear and circular spectropolarimetry. It is demonstrated that the chief bane of accurate measurements is the presence of polarizance fringes, but which can be alleviated by the choice of experimental procedure. For spectral circular polarization studies, problems of cross-talk from any linear polarization present in the source are especially severe. In principle the effects of fringing can be removed in data reductions by calibration measurements of a set of linear polarization standard stars displaying different vibration azimuths and, for circular polarization measurements, knowledge of the linear polarization characteristics of the investigated star must also be known

A co-operating solver approach to building simulation

This paper describes the co-operating solver approach to building simulation as encapsulated within the ESP-r system. Possible adaptations are then considered to accommodate new functional requirements