90,917 research outputs found
Transferring employment between the public and private sectors in the United Kingdom: acquired rights and revising TUPE
This paper analyses the reasons for the United Kingdom's long-delayed response to the European Union’s Acquired Rights Directive. It assesses the British government’s overdue updating of the domestic legislation in 2006 in line with the latest version of the Directive, attributing its dilatory response to a combination of technical legal difficulties and conflicting political objectives. The paper concentrates on the ‘privatisation’ of public services, explaining the most recent protection now available to workers whose jobs are out-sourced to the private or voluntary sector. Member States contemplating reform of their own regulatory regimes may find the British experience instructive.</p
Heat and electricity from the Sun using parabolic dish collector systems
Point focus distributed receiver solar thermal technology for the production of electric power and of industrial process heat is addressed. The thermal power systems project which emphasizes the development of cost effective systems which will accelerate the commercialization and industrialization of plants up to 10 MWe, using parabolic dish collectors is described. The projected size of the isolated load market in the 1990-2000 time period is 300 to 1000 MW/year. Although this market is small in comparison to the grid connected utility market, it is indicated that by assuming only a 20 percent market penetration, up to 10,000 power modules per year would be required to meet this need. At a production rate of 25,000 units/year and assuming no energy storage, levelized bus bar energy costs of 75 mills/kWeh are projected. These numbers are based on what is believed to be a conservative estimate regarding engine-generator conversion efficiency (40 percent) for the 1990 time period. With a more optimistic estimate of efficiency (i.e., 45 percent), the bus bar cost decreases to about 67 mills/kWeh. At very large production rates (400,000 modules/years), the costs decrease to 58 mills/kWeh. Finally, the present status of the technology development effort is discussed
Antiferromagnetic spin-coupling between MnII and amminium radical cation ligands: models for coordination polymer magnets
One and two electron oxidation of the manganese(II) complex [L2Mn(hfac)2] {L = 4'',4'''-di-tert-butyl-2',2'',2'''trimethoxy-{4-(4'-diphenylaminophenyl)pyridine} were studied by ultra violet/ visible/ near infra red spectroscopy, cyclic voltammetry and magnetometry. A one-electron oxidation converts the triarylamine ligand to its radical cation and gives a complex in which the antiferromagnetic coupling between the spin on the ligand and that on the metal J/kb is -1.5 K. In a dilute frozen matrix and at low temperature this behaves as an S = 2 system. A two electron oxidation gives [L2Mn(hfac)2]2.+ which at low enough temperatures behaves as an S = 3/2 system but the spin-coupling between the metal and the ligand is weaker (J/kb = -0.3 K). The weakness of these spin-couplings mean that MnII/amminium radical cation complexes are not promising systems on which to base coordination polymer magnets. The equivalent copper(II) complex [L2Cu(hfac)2] was also investigated but this decomposes when an attempt is made to oxidise the ligand to its amminium radical cation
Theory of Feshbach molecule formation in a dilute gas during a magnetic field ramp
Starting with coupled atom-molecule Boltzmann equations, we develop a
simplified model to understand molecule formation observed in recent
experiments. Our theory predicts several key features: (1) the effective
adiabatic rate constant is proportional to density; (2) in an adiabatic ramp,
the dependence of molecular fraction on magnetic field resembles an error
function whose width and centroid are related to the temperature; (3) the
molecular production efficiency is a universal function of the initial phase
space density, the specific form of which we derive for a classical gas. Our
predictions show qualitative agreement with the data from [Hodby et al, Phys.
Rev. Lett. {\bf{94}}, 120402 (2005)] without the use of adjustable parameters
Adaptive identification and control of structural dynamics systems using recursive lattice filters
A new approach for adaptive identification and control of structural dynamic systems by using least squares lattice filters thar are widely used in the signal processing area is presented. Testing procedures for interfacing the lattice filter identification methods and modal control method for stable closed loop adaptive control are presented. The methods are illustrated for a free-free beam and for a complex flexible grid, with the basic control objective being vibration suppression. The approach is validated by using both simulations and experimental facilities available at the Langley Research Center
Distinguishing step relaxation mechanisms via pair correlation functions
Theoretical predictions of coupled step motion are tested by direct STM
measurement of the fluctuations of near-neighbor pairs of steps on
Si(111)-root3 x root3 R30 - Al at 970K. The average magnitude of the
pair-correlation function is within one standard deviation of zero, consistent
with uncorrelated near-neighbor step fluctuations. The time dependence of the
pair-correlation function shows no statistically significant agreement with the
predicted t^1/2 growth of pair correlations via rate-limiting atomic diffusion
between adjacent steps. The physical considerations governing uncorrelated step
fluctuations occurring via random attachment/detachment events at the step edge
are discussed.Comment: 17 pages, 4 figure
ExoMol line lists XXVIII: The rovibronic spectrum of AlH
A new line list for AlH is produced. The WYLLoT line list spans two
electronic states and . A diabatic model is used
to model the shallow potential energy curve of the state, which
has a strong pre-dissociative character with only two bound vibrational states.
Both potential energy curves are empirical and were obtained by fitting to
experimentally derived energies of the and
electronic states using the diatomic nuclear motion codes Level and Duo. High
temperature line lists plus partition functions and lifetimes for three
isotopologues AlH, AlD and AlH were generated using ab
initio dipole moments. The line lists cover both the -- and --
systems and are made available in electronic form at the CDS and ExoMol
databases
Participation as a Framework for Analysing Consumers’ Experiences of Alternative Dispute Resolution (ADR)
This article argues that an analytic framework based on participation is useful for analyzing consumer experiences of alternative dispute resolution (ADR) and provides a complementary approach to analyses drawing on procedural justice theory. The argument is developed by applying McKeever’s “ladder of legal participation” (LLP) to a qualitative data set of 33 interviews with UK consumers. The article concludes that applying the LLP in the consumer ADR context results in novel empirical and theoretical insights. Empirically, it demonstrates that – despite low value and transactional disputes – consumers expect high levels of participation from ADR. Theoretically, the article argues that the LLP supplements existing approaches by: providing a unifying lens for studying consumer experiences, which goes beyond examining the relationships between process and outcome; emphasizing the importance of participation, not only as a process value, but also in shaping outcomes; and highlighting the distinction between genuine and tokenistic provision of consumer ADR
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