Radio propagation study Semiannual progress report, 1 Jun. - 30 Nov. 1965

Ionospheric studies using radio signals received from SYNCOM 3, Polar Ionosphere Beacon, and 20 Mc/s satellite

Direct Manual Calculations of Ionospheric Parameters Using a Single-polynomial Analysis

Ionospheric parameter calculations using single polynomial analysis to determine variation of electron density with heigh

Investigations of the ionospheric using radio signals from artificial satellites

The occurrence and characteristics of ionospheric irregularities in medium latitudes and in polar regions were measured using radio signals from artificial satellites. Ionospheric changes during quiet and disturbed conditions were also measured. Electron density, elevation angle, and amplitude and frequency of these high frequency signals were determined as well as the direction of their arrival

Ionospheric origin of magnetospheric O+ ions

Flows of thermal atomic oxygen (O+) ions are deduced from topside ionospheric plasma density profiles. The mean flux within most of the polar cap is of the order of 10^12 m^{−2} s^{−1}, a figure which is consistent with both theoretical and experimental estimates of the light ion polar wind at greater altitudes. Larger flows (up to 6 × 10^12 m^{−2} s^{−1}) are observed near the poleward edge of the night-side statistical auroral oval, a feature not reproduced in the light ion flux. The implication is one of a low altitude acceleration mechanism, acting upon the O+ ions at these latitudes and at heights above that at which the fluxes are observed. Such a process would enable ions to escape from the ionosphere because they do not exchange charge with neutral hydrogen. The observations are in general agreement with energetic O+ ions as previously observed in various parts of the magnetosphere

Linking transport, health and sustainability: Better data sets for better policy-making

The impact transport has on our physical and mental health and on the environment is increasingly recognised by academics, practitioners and decision-makers. To inform policy-making and research, it is crucial to have access to sufficient comprehensive datasets linking these topics. Large scale surveys rarely combine questions on transport, health and sustainability, limiting their usefulness in research and policy-making. This project set out to identify the gaps in administrative and survey datasets to link health outcomes to travel behaviour and the quality of the environment; investigate the impact this has on research and policy-making; assess how these gaps might be addressed; and identify what the needs are for joined datasets. To achieve this, the project interviewed key decision-makers and stakeholders across England, including civil servants within national or local government and third sector organisations. The results highlight gaps within national datasets; the insufficient links between health, transport, and sustainability datasets; and the need for further joined data in various fields, in particular active travel, health and wellbeing. Participants suggested several solutions, including better harmonisation of surveys and data fusion

The role of teleworking in Britain: its implications for the transport system and economic evaluation

The probable impacts of teleworking in Britain were assessed through analysis of the National Travel Survey, and interviews with major organisations in the London area. These indicate relatively modest effects overall, but a growing element of part-week teleworking at home