38,453 research outputs found
Comment: Judicial Selection and Decisional Independence
To protect the decisional independence of judges without disturbing the proper balance of control on the exercise of judicial power, substantive reforms to the selection processes should include adjustments in judicial term length, responsible campaign finance reform and efforts to assure public understanding of the role of the judiciary in the government structure of the US
Constitutional Analogies in the International Legal System
This Article explores issues at the frontier of international law and constitutional law. It considers five key structural and systemic challenges that the international legal system now faces: (1) decentralization and disaggregation; (2) normative and institutional hierarchies; (3) compliance and enforcement; (4) exit and escape; and (5) democracy and legitimacy. Each of these issues raises questions of governance, institutional design, and allocation of authority paralleling the questions that domestic legal systems have answered in constitutional terms. For each of these issues, I survey the international legal landscape and consider the salience of potential analogies to domestic constitutions, drawing upon and extending the writings of international legal scholars and international relations theorists. I also offer some preliminary thoughts about why some treaties and institutions, but not others, more readily lend themselves to analysis in constitutional terms. And I distinguish those legal and political issues that may generate useful insights for scholars studying the growing intersections of international and constitutional law from other areas that may be more resistant to constitutional analogies
Growth and shear loss characteristics of an aerobic biofilm : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Technology in Biotechnology at Massey University
The application of biofilms in fermentation and waste treatment processes has been increasingly considered in recent years due to several inherent advantages over suspended growth systems. For example, they enable higher biomass hold-up providing larger quantity of cell per unit reactor volume which allows high loading rates. The biofilm systems, with fixed or immobilised cells, avoid washout conditions. The often difficult problems of sludge thickening, separation, recycle, and wasting associated with suspended growth systems are eliminated for biofilm systems. However, the major drawback lies in the control of film thickness in order to maintain high reactor productivities. The attached film thickness depends on both the biological parameters such as growth rate, and physical parameters such as hydrodynamic shear. The understanding of the growth and shear loss characteristics is a prerequisite for effective film thickness control. The main objective of this work therefore is to investigate the growth and shear loss characteristics of an aerobic biofilm utilizing phenol in a concentric cylindrical bioreactor. The growth and detachment of the biofilm was studied at different shear stresses, and their relationships were established. Detachment by shear was studied under two different conditions. One was examined simultaneously with growth under a constant shear stress where the biofilm detachment and growth occurred at the same time in the bioreactor. The other was examined via a separate shear test performed on the biofilm initially grown at a shear stress lower than that applied during the test. A method for measuring the torque exerted on the biofilm surface was first developed to enable computation of the related shear stress necessary for the study. The effect of film thickness on torque at film surface for a constant rotational speed was not significant. Shear stress can be conveniently determined from a quadratic relationship between torque and rotational speed for the range of film thickness studied. The substrate consumption is directly proportional to film thickness up to about 0.050 to 0.100 mm only, and beyond that it becomes independent of film thickness. The mass transfer resistance in the liquid phase appears to reach a minimum at shear stress greater than 3.44 N/m2
coinciding with the maximum steady-state substrate removal rate. The shear loss resistance of the biofilm increases with increasing shear stress during growth. The ultimate shear loss rate and shear stress relationship follows approximately: Rs
= (40.82 – 2.750+0.1502
– 31.83e-0.610
) × 10-2
The net growth rate varies with shear stress according to a parabolic function which predicts a shear stress of 19 N/m2
is required to achieve zero net growth. The biofilm-support adhesion must remain stronger than the film layer adhesion, otherwise, detachment will occur at the film-support interface rendering it impossible to control the film thickness
Electromagnetic Zero Point Field as Active Energy Source in the Intergalactic Medium
For over twenty years the possibility that the electromagnetic zero point
field (ZPF) may actively accelerate electromagnetically interacting particles
in regions of extremely low particle density (as those extant in intergalactic
space (IGS) with n < 1 particle/m^3 has been studied and analyzed. This
energizing phenomenon has been one of the few contenders for acceleration of
cosmic rays (CR), particularly at ultrahigh energies. The recent finding by the
AGASA collaboration (Phys. Rev. Lett., 81, 1163, 1998) that the CR energy
spectrum does not display any signs of the Greisen-Zatsepin-Kuzmin cut-off
(that should be present if these CR particles were indeed generated in
localized ultrahigh energies CR sources, as e.g., quasars and other highly
active galactic nuclei), may indicate the need for an acceleration mechanism
that is distributed throughout IGS as is the case with the ZPF. Other
unexplained phenomena that receive an explanation from this mechanism are the
generation of X-ray and gamma-ray backgrounds and the existence of Cosmic
Voids. However recently, a statistical mechanics kind of challenge to the
classical (not the quantum) version of the zero-point acceleration mechanism
has been posed (de la Pena and Cetto, The Quantum Dice, 1996). Here we briefly
examine the consequences of this challenge and a prospective resolution.Comment: 7 pages, no figure
Willful Blindness: Federal Agencies\u27 Failure to Comply with the Regulatory Flexibility Act\u27s Periodic Review Requirement-And Current Proposals to Invigorate the Act
The Article first explains the basic requirements of the Regulatory Flexibility Act, and in particular focuses on the periodic review requirement contained in Section 610. It traces the history of Presidential efforts through the promulgation of executive orders to delay the implementation of regulations and require agencies to consult with regulated industries. Reviewing agency action from 1997-2005 following Section 610 review, it found agencies are confused as to when review is necessary, and, though Section 610 is meant to decrease the regulatory burden on small business, agencies often increase the regulatory burden on small business. It concludes the key problem regarding Section 610 agency is the very low review rate, and provides several legislative resolutions meant to compel agency review and greater small business participation in regulatory decision-making
A Systematic Study of Neutrino Mixing and CP Violation from Lepton Mass Matrices with Six Texture Zeros
We present a systematic study of 400 combinations of the charged lepton and
neutrino mass matrices with six vanishing entries or texture zeros. Only 24 of
them, which can be classified into a few distinct categories, are found to be
compatible with current neutrino oscillation data at the level. A
peculiar feature of the lepton mass matrices in each category is that they have
the same phenomenological consequences. Taking account of a simple seesaw
scenario for six parallel patterns of the charged lepton and Dirac neutrino
mass matrices with six zeros, we show that it is possible to fit the
experimental data at or below the level. In particular, the maximal
atmospheric neutrino mixing can be reconciled with a strong neutrino mass
hierarchy in the seesaw case. Numerical predictions are also obtained for the
neutrino mass spectrum, flavor mixing angles, CP-violating phases and effective
masses of the tritium beta decay and the neutrinoless double beta decay.Comment: 35 pages, 15 figures, minor change
The Use and Abuse of Special-Purpose Entities in Public Finance
States increasingly are raising financing indirectly through special-purpose entities (SPEs), variously referred to as authorities, special authorities, or public authorities. Notwithstanding their long history and increasingly widespread use, relatively little is known or has been written about these entities. This article examines state SPEs and their functions, comparing them to SPEs used in corporate finance. States, even more than corporations, use these entities to reduce financial transparency and avoid public scrutiny, seriously threatening the integrity of public finance. The article analyzes how regulation could be designed in order to control that threat while maintaining the legitimate financing benefits provided by these state entities
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Differential amplitude scanning for retinal imaging: a theoretical study
A differential amplitude scanning system for ophthalmoscopy is described theoretically. The differential scanning ophthalmoscope (DSO) samples the retina with two laterally displaced spots. The signal measured is the difference between the irradiance from these two locations. The theoretical analysis of the DSO shows it offers increased contrast at high spatial frequencies and only weak contributions from the low frequencies. This enables high-gain, low-noise detection that maximizes contrast
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