420 research outputs found
Higher wages, but insufficient earnings? The missing role of take-home pay in UK job quality
The UK has had considerable success in improving gross hourly wages at the bottom of the distribution. However, Thomas Stephens shows that the sufficiency of workersâ overall net earnings â accounting for hours worked, and pay deductions â hasnât improved in the same way as hourly wages over this same period. He argues for a focus on Earnings Sufficiency, and its key drivers, to improve UK job quality
This time no mistakes: how to remake Britain - review
In This Time No Mistakes, Will Hutton examines the causes of Britainâs political and economic dysfunction and calls for a new public philosophy combining social democracy and progressive liberalism to redress current crises. Though in places Hutton misses opportunities to further develop his arguments, he nevertheless sets out a compelling vision for a better Britain and the steps that could be taken to achieve it, writes Tom Stephens. Will Hutton launched the book at LSE in April. Watch it back on YouTube. This Time No Mistakes: How to Remake Britain. Will Hutton. Apollo. 2024
Investigation of the Damping of Liquids in Right-Circular Cylindrical Tanks, Including the Effects of a Time-Variant Liquid Depth
An experimental investigation was conducted to determine the effects of several basic variables upon the damping of the fundamental antisymmetric mode of liquids in right-circular cylindrical tanks without baffles. The variables examined include liquid depth, efflux rate, liquid amplitude, kinematic viscosity, and tank size. The data are presented in dimensionless form and compared with available theory. For the range of variables examined, variations of efflux rate and liquid amplitude were found to have no significant effects on the liquid damping. The following theoretical relationship was found to be adequate for the prediction of the variation of damping with liquid depth, kinematic viscosity, and tank size: [for equation see full text] where v is the kinematic viscosity, R is the cylinder radius, g is the acceleration due to gravity, and h is the liquid depth. However, the constant K was experimentally found in this investigation to have the value 5.23, which is 50 percent higher than the theoretically predicted value
Bully, bullies and bullying: Pejorative terminology, alternative descriptors, and ethics-based interventions
This presentation will present historical perspectives on the use of person-first terminology as related to the impact of contemporary pejorative terminology, including the terms associated with bullying. Functional alternatives in assessing problematic behaviors will follow. Finally, ethics-based (least intrusive) social skills and behavioral interventions will be exemplified
Successive Ring Expansion Reactions
This thesis describes the development of a series of methods for performing ring expansion reactions consecutively, either using successive reactions (explored in Chapters 2â4) or cascade sequences (explored in Chapters 5 and 6).
In Chapter two, β-ketoester ring expansion methodology (that has been developed in the Unsworth group) has been extended by incorporating both amino acids and β-hydroxy acids into a range of previously inaccessible cyclic starting materials. The molecular properties of the compounds were then examined to assess their âlead-likelinessâ. In Chapter three, the simple lactam motif was utilised to incorporate Îą-/β-amino acids to produce macrocyclic peptidiomimetics directly, with a range of natural Îą-amino acids incorporated. In Chapter four, lactams were then ring enlarged with hydroxy acids forming a diverse array of functionalised macrocyclic lactones. In Chapter five, a cyclisation/expansion cascade was collaboratively explored forming medium-sized bi-aryl lactones/lactams with excellent atroposelectivity. Chapter six describes the preliminary results obtained, for a similar cyclisation/expansion cascade (towards the synthesis of polyamine macrocycles), whereby consecutive acyl transfer reactions must occur
Rapid divergence of the male reproductive proteins in the Drosophila dunni group and implications for postmating incompatibilities between species
Proteins involved in post-copulatory interactions between males and females are among the fastest evolving genes in many species, usually attributed to their involvement in reproductive conflict. As a result, these proteins are thought to often be involved in the formation of postmating-prezygotic incompatibilities between species. The Drosophila dunni subgroup consists of a dozen recently diverged species found across the Caribbean islands with varying levels of hybrid incompatibility. We performed experimental crosses between species in the dunni group and see some evidence of hybrid incompatibilities. We also find evidence of reduced survival following hybrid mating, likely due to postmating-prezygotic incompatibilities. We assessed rates of evolution between these species genomes and find evidence of rapid evolution and divergence of some reproductive proteins, specifically the seminal fluid proteins. This work suggests the rapid evolution of seminal fluid proteins may be associated with postmating-prezygotic isolation, which acts as a barrier for gene flow between even the most closely related species
Numerical simulation of transom-stern waves
The flow field generated by a transom-stern hullform is a complex,
broad-banded, three-dimensional phenomenon marked by a large breaking wave.
This unsteady multiphase turbulent flow feature is difficult to study
experimentally and simulate numerically. The results of a set of numerical
simulations, which use the Numerical Flow Analysis (NFA) code, of the flow
around the Model 5673 transom stern at speeds covering both wet- and
dry-transom operating conditions are shown in the accompanying fluid dynamics
video. The numerical predictions for wet-transom and dry-transom conditions are
presented to demonstrate the current state of the art in the simulation of ship
generated breaking waves. The interested reader is referred to Drazen et al.
(2010) for a detailed and comprehensive comparison with experiments conducted
at the Naval Surface Warfare Center Carderock Division (NSWCCD).Comment: Fluid Dynamics Video for 2010 APS Division of Fluid Dynamics Gallery
of Fluid Motion include
Identifying tensions in the development of northern Australia: implications for governance
Northern Australia has a population of 1.2 million people across nearly half the continental landmass. It is home to many diverse communities of people, including Aboriginal nations, descendants of European, Melanesian and Asian settlers and more recent arrivals. It is an area of globally significant natural beauty with unique ecologies. It also has strategic and economic importance to Australia. A contentious debate over the future of the region can be observed within three themes: Big development, big conservation and policies seeking Indigenous wellbeing. We argue that if the agendas associated with each of these themes and their associated agents are driven forward in isolation, the tensions between the three will compromise the health, wellbeing and economic coherence and vitality of the North. This paper presents an overview of the present governance landscape with a critique of the role of neoliberalism and neoliberal governmentality. It identifies some of the ways in which 'other' social values and ways of knowing are either marginalised or rendered invisible in these narratives of governance and development. In highlighting the tensions that result from these exclusions, we argue there is a need to both understand these dynamics, and move towards an explicit commitment to open, genuine dialogue, inclusive of the communities that reside in northern Australia
Supporting Student System Modelling Practice Through Curriculum and Technology Design
Developing and using models to make sense of phenomena or to design solutions to problems is a key science and engineering practice. Classroom use of technology-based tools can promote the development of studentsâ modelling practice, systems thinking, and causal reasoning by providing opportunities to develop and use models to explore phenomena. In previous work, we presented four aspects of system modelling that emerged during our development and initial testing of an online system modelling tool. In this study, we provide an in-depth examination and detailed evidence of 10th grade students engaging in those four aspects during a classroom enactment of a system modelling unit. We look at the choices students made when constructing their models, whether they described evidence and reasoning for those choices, and whether they described the behavior of their models in connection with model usefulness in explaining and making predictions about the phenomena of interest. We conclude with a set of recommendations for designing curricular materials that leverage digital tools to facilitate the iterative constructing, using, evaluating, and revising of models
Multiconfiguration Loads Analysis for Missions with an Uncertain Rideshare Manifest
Rideshare or âmulti-manifestâ missions â where several smaller ârideshareâ spacecraft are launched together, usually with a larger âforwardâ spacecraft â are becoming increasingly common. In many cases, the properties or configuration of the rideshare spacecraft are not well-defined during initial launch manifesting and may not be finalized until a few months before launch. In this paper, a multiconfiguration loads analysis (MLA) process is presented that can enable flexibility in the mission manifesting process by allowing for uncertainty in the final rideshare configuration, including late manifest changes or swaps, without requiring additional loads analyses to those specified in the Load Cycle Process. By applying the MLA process, a set of adequately conservative loads can be generated for the forward spacecraft, launch vehicle, and potential rideshare spacecraft that account for uncertainty in the rideshare manifest and minimize the potential for issues late in the process. The MLA process will also define a mission-specific dynamic properties envelope that would allow rideshare spacecraft that âfitâ within the envelope to be swapped. If all parts of the system are verified to match the models used in analysis and designed to survive the bounding loads, the launch manifest can be changed after analyses are completed, much closer to launch, without incurring increased risk
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