The Membership of the Communist Party of Great Britain, 1920-1945

The opening of archives in recent years makes it possible to reassess the membership of the Communist Party of Great Britain (CPGB) before 1945. The revised aggregate figures, while not startling, suggest that revisions to established views of the effects of the General Strike, the shift to the ‘new line’ and the popular front, are in order. The party's membership was very predominantly male, tended to be young, often included a high proportion of unemployed people, and was heavily working class, with miners especially significant. Geographically, its membership was dominated for most of the period by London, Scotland, Lancashire, and South Wales. There was also a very high turnover of membership for much of the period. The reasons for this turnover, and explanations for the circumstances in which the party was best able to recruit, are discussed. Over time the party's membership did become less unrepresentative of Britain as a whole, enabling it to become an organic, if minor, part of British political life. CPGB membership patterns have similarities with those of other Western Communist parties and its predecessor organizations in Britain, showing how the CPGB reflected features of both international Communism and the British left.British Academy; University of Exete

The industrial meaning of "gradualism": the Labour party and industry, 1918-1931

In the period from 1918 until 1931, the British Labour party adhered to the precepts of "gradualism": incrementally and by degrees, the party would gain support and pass legislation in an inexorable progress toward the socialist millennium. For a while, it seemed that this strategy would carry all before it. Emerging from the First World War with a "socialist" commitment, it became the largest opposition party at the 1918 general election. In 1922 it became the clear opposition to the Conservatives, and Ramsay MacDonald was reelected leader after an eight-year break. A short-lived minority Labour government in 1924 was followed by heavy electoral defeat, but the party was able to form its second minority government in 1929. However, its credibility was destroyed by soaring unemployment, and the ministry collapsed in the summer of 1931 after failing to agree on public expenditure cuts. MacDonald and the chancellor of the Exchequer, Philip Snowden, led a small Labour cohort into a "National" government, which went on to crush Labour at the polls that October. Detailed work on this complex period of Labour's history is hard to find, however. Little work has been done on policy: in particular, it is surprising that, given the party's symbiotic link with trade unionism and the central role of industry in Labour leaders' conception of the transformation to socialism, so little attention has been paid to the party's industrial policy in this period

Large Data and Zero Noise Limits of Graph-Based Semi-Supervised Learning Algorithms

Scalings in which the graph Laplacian approaches a differential operator in the large graph limit are used to develop understanding of a number of algorithms for semi-supervised learning; in particular the extension, to this graph setting, of the probit algorithm, level set and kriging methods, are studied. Both optimization and Bayesian approaches are considered, based around a regularizing quadratic form found from an affine transformation of the Laplacian, raised to a, possibly fractional, exponent. Conditions on the parameters defining this quadratic form are identified under which well-defined limiting continuum analogues of the optimization and Bayesian semi-supervised learning problems may be found, thereby shedding light on the design of algorithms in the large graph setting. The large graph limits of the optimization formulations are tackled through Γ−convergence, using the recently introduced TL^p metric. The small labelling noise limits of the Bayesian formulations are also identified, and contrasted with pre-existing harmonic function approaches to the problem

Comparison of SST diurnal variation models over the Tropical Warm Pool region

Four sea surface temperature (SST) diurnal variation (DV) models have been compared against Multi-functional Transport Satellite - 1R (MTSAT-1R) SST measurements over the Tropical Warm Pool region (TWP, 90°E-170°E, 25°S-15°N) for four months from January to April 2010. The four models include one empirical model formulated by Chelle Gentemann (hereafter CG03), one physical model proposed by Zeng and Beljaars in 2005 (ZB05) and its updated version (ZB+T), and one air-sea coupled model (the Met Office Unified Model Global Coupled configuration 2, GC2) with ZB05 warm layer scheme added on top of the standard configuration. The sensitivity of the v3 MTSAT-1R data to the “true” changes in SST is first investigated using drifting buoys and is estimated to be 0.60 ± 0.05. This being significantly different from 1, the models are validated against MTSAT-1R data and the same data scaled by the inverse of the sensitivity (representing an estimate of the true variability). Results indicate that all models are able to capture the general DV patterns but with differing accuracies and features. Specifically, CG03 and ZB+T underestimate strong (> 2 K) DV events’ amplitudes especially if we assume that sensitivity-scaled MTSAT-1R variability is most realistic. ZB05 can effectively capture the DV cycles under most DV and wind conditions, as well as the DV spatial distribution. GC2 tends to overestimate small-moderate (< 2 K) DV events but can reasonably predict large DV events. 1-3 hr lags in warming start and peak times are found in GC2

Ultralow phase noise microwave generation with an Er:fiber-based optical frequency divider

We present an optical frequency divider based on a 200 MHz repetition rate Er:fiber mode-locked laser that, when locked to a stable optical frequency reference, generates microwave signals with absolute phase noise that is equal to or better than cryogenic microwave oscillators. At 1 Hz offset from a 10 GHz carrier, the phase noise is below -100 dBc/Hz, limited by the optical reference. For offset frequencies > 10 kHz, the phase noise is shot noise limited at -145 dBc/Hz. An analysis of the contribution of the residual noise from the Er:fiber optical frequency divider is also presented.Comment: 4 pages, 3 figure

Weddell Sea Export Pathways from Surface Drifters

The complex export pathways that connect the surface waters of the Weddell Sea with the Antarctic Circumpolar Current influence water mass modification, nutrient fluxes, and ecosystem dynamics. To study this exchange, 40 surface drifters, equipped with temperature sensors, were released into the northwestern Weddell Sea’s continental shelf and slope frontal system in late January 2012. Comparison of the drifter trajectories with a similar deployment in early February 2007 provides insight into the interannual variability of the surface circulation in this region. Observed differences in the 2007 and 2012 drifter trajectories are related to a variable surface circulation responding to changes in wind stress curl over the Weddell Gyre. Differences between northwestern Weddell Sea properties in 2007 and 2012 include 1) an enhanced cyclonic wind stress forcing over the Weddell Gyre in 2012; 2) an acceleration of the Antarctic Slope Current (ASC) and an offshore shift of the primary drifter export pathway in 2012; and 3) a strengthening of the Coastal Current (CC) over the continental shelf in 2007. The relationship between wind stress forcing and surface circulation is reproduced over a longer time period in virtual drifter deployments advected by a remotely sensed surface velocity product. The mean offshore position and speed of the drifter trajectories are correlated with the wind stress curl over the Weddell Gyre, although with different temporal lags. The drifter observations are consistent with recent modeling studies suggesting that Weddell Sea boundary current variability can significantly impact the rate and source of exported surface waters to the Scotia Sea, a process that determines regional chlorophyll distributions

Sharing teachers\u27 stories of sport education : a summary of findings from the 1994 national SEPEP trials

Sport Education is an innovative curriculum model, increasingly used as a component of upper primary and secondary school physical education programs and exhibiting many parallels with community junior sport. Within normally scheduled physical education lessons, mixed ability teams are formed at the start of a 20 session (approximately) competitive season . In addition to the aim of helping students learn to become good players, Sport Education encourages students to fulfil other roles such as umpiring, acting as a team coach, manager or captain, serving on a sports management board or duty team and working as a publicity officer/journalist. As students assume greater responsibility for learn1hg, teachers relinquish traditional up-front direct teaching roles, often moving off-centre stage to facilitate social, knowledge and skill learning through a range of student-centred learning strategies. The Sport Education model is a process with a potential for educating children into good sporting behaviour and embodies a number of characteristics..