3,779 research outputs found
Due Process and the Putative Class: The Importance of Pre-Merits Certification Under Federal Rule 23, Class Actions
The Constitution and International Agreements or Unilateral Action Curbing “Peace-Imperiling’ Propoganda
Non-spherical particles are present all around us, in biological, industrial and environmental processes. Making predictions of their impact on us and systems in our vicinity can make life better for everyone here on earth. For example, the ash particles from a volcano eruption are non-spherical and their spreading in the atmosphere can hugely impact the air traffic, as was also proven in 2010. Furthermore, the orientation of the wood fibres in a paper sheet influences the final properties of the paper, and the cause of a specific fibre orientation can be traced back to the fluid flows during the manufacturing process of the paper. In this thesis, experimental and numerical work is presented with the goal to understand and utilize the behavior of elongated particles in fluid flows. Two different experimental setups are used. The first one, a turbulent half channel flow, aims at increasing the understanding of how particles with non-zero inertia behave in turbulence. The second setup is an attempt to design a flow field with the purpose to align nanofibrils and create high performance cellulose filaments. Experiments were performed in a turbulent half channel flow at different flow set- tings with dilute suspensions of cellulose acetate fibres having three different aspect ratios (length to width ratio). The two main results were firstly that the fibres agglom- erated in streamwise streaks, believed to be due to the turbulent velocity structures in the flow. Secondly, the orientation of the fibres was observed to be determined by the aspect ratio and the mean shear, not the turbulence. Short fibres were oriented in the spanwise direction while long fibres were oriented in the streamwise direction. In order to utilize the impressive properties (stiffness comparable to Kevlar) of the cellulose nanofibril in a macroscopic material, the alignment of the fibrils must be controlled. Here, a flow focusing device (resulting in an extensional flow), designed to align the fibrils, is used to create a cellulose filament with aligned fibrils. The principle is based on a separation of the alignment and the assembly of the fibrils, i.e. first align the fibrils and then lock the aligned structure. With this process, continuous filaments were created, with properties similar to that of the wood fibre at the same fibril alignment. However, the highest alignment (lowest angle) of the fibrils in a filament created was only 31o from the filament axis, and the next step is to increase the alignment. This thesis includes modeling of the alignment process with the Smoluchowski equation and a rotary diffusion. Finding a model that correctly describes the alignment process should in the end make it possible to create a filament with fully aligned fibrils.QC 20140908</p
The Constitution and International Agreements or Unilateral Action Curbing “Peace-Imperiling’ Propoganda
Simultaneous Continuation of Infinitely Many Sinks Near a Quadratic Homoclinic Tangency
We prove that the diffeomorphisms on surfaces, exhibiting infinitely
many sinksnear the generic unfolding of a quadratic homoclinic tangency of a
dissipative saddle, can be perturbed along an infinite dimensional manifold of
diffeomorphisms such that infinitely many sinks persist simultaneously.
On the other hand, if they are perturbed along one-parameter families that
unfold generically the quadratic tangencies, then at most a finite number of
those sinks have continuation
Examining the undergraduate student experience of transgender students at small, private, liberal arts institutions: a phenomenological analysis
2021 Fall.Includes bibliographical references.As the population of students who identify as transgender grows on college campuses, it is critical that higher education identify the ways in which institutions can more effectively serve the needs of this population, creating an environment that is supportive and inclusive. The literature demonstrates that campuses have fallen short of this goal. This study was designed to understand the lived experiences of seven transgender students who matriculated at small, private, liberal arts institutions in the south and southeast. By understanding their lived experiences, institutions that are truly committed to creating an environment that is diverse, equitable, and inclusive can understand common areas where institutions fall short and understand the ways in which participants experienced support and inclusion in meaningful ways during their time as undergraduates
Constitutional Uniformity and Equality in State Taxation
The method of approach and arrangement of materials are developed during the course of the monograph. Therefore, it is not necessary to repeat them here. The purpose of the study is twofold. First, it should provide background material for constitutional revision. Second, it should aid counsel and court in deciding cases arising under existing constitutional limitations and state legislatures in drafting tax measures in such a way that pitfalls in existing limitations are avoided. The greater part of this monograph was prepared during a two year period from June 1951 to 1953, while I was a Research Assistant with the Legislative Research Center, University of Michigan Law School. It was completed during succeeding summers, and I have attempted to reflect all cases decided through the summer of 1956.https://repository.law.umich.edu/michigan_legal_studies/1013/thumbnail.jp
Investigating the Effect of Stratospheric Radiation on Seed Germination and Growth
Three seed types: bean (Phaseolus vulgaris), corn (Zea mays) and radish (Raphanus sativus) were flown in a high altitude weather balloon into the mid-stratosphere to investigate the effects of high altitude radiation on germination success and seedling growth. After recovering and planting the seeds, the bean seeds showed lower germination success with exposure to high altitude radiation, and consequently stunted seedling growth. Cord and radish seeds experienced a statistically significant positive effect on germination success form radiation exposure compared to control seeds, but negative effect on seedling growth. Overall, the field experiments presented here support laboratory studies that show radiation exposure on vegetable seeds has a mixed effect on the germination success and negative effect on seedling growth on investigated seed types
Generic dynamics of 4-dimensional C2 Hamiltonian systems
We study the dynamical behaviour of Hamiltonian flows defined on
4-dimensional compact symplectic manifolds. We find the existence of a
C2-residual set of Hamiltonians for which every regular energy surface is
either Anosov or it is in the closure of energy surfaces with zero Lyapunov
exponents a.e. This is in the spirit of the Bochi-Mane dichotomy for
area-preserving diffeomorphisms on compact surfaces and its continuous-time
version for 3-dimensional volume-preserving flows
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