3,250 research outputs found
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Leibniz and the Puzzle of Incompossibility: The Packing Strategy
Philosoph
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Berkeley, Human Agency and Divine Concurrentism
Berkeley ’s commentators have been highly critical of his account of human agency. In this essay I argue that there is a rather straightforward reading of his view that is historically sensitive, philosophically well-motivated, and fits squarely with his texts. The paper falls into four main sections. The first section briefly revisits three options concerning the relationship between human and divine agency available to theistically minded philosophers in the medieval and early modern eras. The second argues that of those three views only the position of concurrentism is consistent with Berkeley’s texts. The third section explores Berkeley’s reasons for adopting concurrentism, especially as opposed to occasionalism, by highlighting three motivating considerations drawn from his larger philosophical system. Finally the fourth section attempts to flesh out Berkeley’s understanding of human activity by looking at how we might understand his claim that we move our legs ourselves in light of his commitments to idealism and concurrentism.Philosoph
Developments in Stochastic Fuel Efficient Cruise Control and Constrained Control with Applications to Aircraft.
This dissertation presents contributions to fuel-efficient control of vehicle speed and constrained control with applications to aircraft.
In the first part of this dissertation a stochastic approach to fuel-efficient vehicle speed control is developed. This approach encompasses stochastic modeling of road grade and traffic speed and uses the application of stochastic dynamic programming to generate vehicle speed control policies that are optimized for the trade-off between fuel consumption and travel time. It is shown that the policies lead to the emergence of time-varying vehicle speed patterns, often referred to as pulse and glide (PnG). Through simulations and experiments it is confirmed that these time-varying vehicle speed profiles are more fuel-efficient than driving at a comparable constant speed. A practical implementation strategy of these patterns is then developed and demonstrated. Also, several additional contributions are made to approaches for stochastic modeling of road grade and vehicle speed that include the use of Kullback-Liebler divergence and divergence rate and a stochastic jump-like model for the behavior of the road grade.
In the second part of the dissertation, contributions to constrained control with applications to aircraft are described. Recoverable sets and integral safe sets of initial states of constrained closed-loop systems are introduced first and computational procedures of such sets based on linear discrete-time models are given. An approach to constrained flight planning based on chaining recoverable sets or integral safe sets is described and illustrated with a simulation example. Finally, two control schemes that exploit integral safe sets are proposed. The first scheme, referred to as the controller state governor (CSG), resets the controller state (typically an integrator) to enforce the constraints and enlarge the set of plant states that can be recovered without constraint violation. The second scheme, referred to as the controller state and reference governor (CSRG), combines the controller state governor with the reference governor control architecture and provides the capability of simultaneously modifying the reference command and the controller state to enforce the constraints. Theoretical results that characterize the response properties of both schemes are presented. Examples are reported that illustrate the operation of these schemes.PhDAerospace EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/111399/1/kevinmcd_1.pd
Op-Ed on Our Current Educational Inequalities
There is a lack of equal opportunities in education across levels of socioeconomic status. This Op-Ed discusses current research and potential ways to lessen the gap in opportunities for students
INTEGRATING MULTILITERACIES IN A THIRD GRADE CLASSROOM TO ENHANCE STUDENT ENGAGEMENT AND MOTIVATION
The purpose of the study is to investigate the growth in student motivation and engagement through a multiliteracy lens. The specific aim is to explore what happens when a traditional writing unit is replaced with a multiliteracy writing unit that utilizes multimodal components. The students demonstrated changes in how they perceived themselves as writers and how they viewed writing in general. The implications for teaching writing with a multiliteracy approach is also discussed
NASTRAN general purpose interface requirements document
This NASTRAN (NASA STRuctural ANalysis) General Purpose Interface Requirements Document (IRD) defines standards for deliverables required of New Capability Contractors (NCCs) and relates these deliverables to the software development cycle. It also defines standards to be followed by NCCs for adding to and modifying the code in the NASTRAN software system and for adding to and modifying the four official NASTRAN manuals: The NASTRAN Theoretical Manual, the NASTRAN User's Manual, The NASTRAN Programmer's Manual, and The NASTRAN Demonstration Problem Manual. It is intended that this General Purpose IRD shall be incorporated by reference in all contracts for a new NASTRAN capability
A Search for AGN sources of the IceCube Diffuse Neutrino Flux
The origin of the diffuse astrophysical neutrino flux measured by the IceCube
Observatory remains largely unknown. Although NGC 1068 and TXS 0506+056 have
been identified as potential neutrino sources, the diffuse flux of neutrinos
must have additional sources that have not yet been identified. Here we
investigate potential correlations between IceCube's neutrino events and the
Fermi and MOJAVE source catalogs, using the publicly-available IceCube data
set. We perform three separate spatially-dependent, energy-dependent, and
time-dependent searches, and find no statistically significant sources outside
of NGC 1068. We find that no more than 13% of IceCube's neutrino flux
originates from blazars over the whole sky. Then, using an energy-dependent
likelihood analysis, the limit on neutrinos originating from blazars reduces to
9% in the Northern hemisphere. Finally, we set limits on individual sources
from the MOJAVE radio catalog after finding no statistically significant
time-flaring sources.Comment: 18 pages, 7 figure
EurOcean 2014. Connecting Science, Policy and People. Conference report and Rome Declaration 7-9 October 2014, Rome, Italy
This publication presents the Conference Report from EurOCEAN 2014 – a major European marine science policy conference which took place on 7-9 October 2014 in Rome, Italy. The report provides the key messages from the Conference including the Rome Declaration, a consensus view of some 340 participants spanning science, policy and industry. The Declaration sets a vision for seas and ocean science to achieve an ecosystem approach to the management of Europe’s marine resources as a fundamental requirement for sustainable Blue Growth whilst driving European leadership in marine science and technology. EurOCEAN 2014 was an official event of the Italian Presidency of the Council of the European Union, co-organized by the European Marine Board (EMB), the European Commission (Directorate-General for Research and Innovation), the Italian National Research Council (CNR), National Inter-university Consortium for Ocean Science (CoNISMa), and the National Institute of Oceanography and Experimental Geophysics (OGS
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