6,349 research outputs found

    Corn Growing in Ohio

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    Exact date of bulletin unknown.PDF pages: 2

    Design Microprotests

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    This essay considers three design projects as microprotests. Reflecting on the ways design practice can generate spaces, sites and methods of protest, we use the concept of microprotest to consider how we, as designers ourselves, can protest by scaling down, focussing, slowing down and paying attention to the edges of our practice. Design microprotest is a form of design activism that is always collaborative, takes place within a community, and involves careful translation of a political conversation. While microprotest can manifest in any design discipline, in this essay we focus on visual communication design. In particular we consider the deep, reflexive practice of listening as the foundation of microprotests in visual communication design. While small in scale and fleeting in duration, these projects express rich and deep political engagements through conversations that create and maintain safe spaces. While many design theorists (Julier; Fuad-Luke; Clarke; Irwin et al.) have done important work to contextualise activist design as a broad movement with overlapping branches (social design, community design, eco-design, participatory design, critical design, and transition design etc.), the scope of our study takes ‘micro’ as a starting point. We focus on the kind of activism that takes shape in moments of careful design; these are moments when designers move politically, rather than necessarily within political movements. These microprotests respond to community needs through design more than they articulate a broad activist design movement. As such, the impacts of these microprotests often go unnoticed outside of the communities within which they take place. We propose, and test in this essay, a mode of analysis for design microprotests that takes design activism as a starting point but pays more attention to community and translation than designers and their global reach. In his analysis of design activism, Julier proposes “four possible conceptual tactics for the activist designer that are also to be found in particular qualities in the mainstream design culture and economy” (Julier, Introduction 149). We use two of these tactics to begin exploring a selection of attributes common to design microprotests: temporality – which describes the way that speed, slowness, progress and incompletion are dealt with; and territorialisation – which describes the scale at which responsibility and impact is conceived (227). In each of three projects to which we apply these tactics, one of us had a role as a visual communicator. As such, the research is framed by the knowledge creating paradigm described by Jonas as “research through design”. We also draw on other conceptualisations of design activism, and the rich design literature that has emerged in recent times to challenge the colonial legacies of design studies (Schultz; Tristan et al.; Escobar). Some analyses of design activism already focus on the micro or the minor. For example, in their design of social change within organisations as an experimental and iterative process, Lensjkold, Olander and Hasse refer to Deleuze and Guattari’s minoritarian: “minor design activism is ‘a position in co-design engagements that strives to continuously maintain experimentation” (67). Like minor activism, design microprotests are linked to the continuous mobilisation of actors and networks in processes of collective experimentation. However microprotests do not necessarily focus on organisational change. Rather, they create new (and often tiny) spaces of protest within which new voices can be heard and different kinds of listening can be done. In the first of our three cases, we discuss a representation of transdisciplinary listening. This piece of visual communication is a design microprotest in itself. This section helps to frame what we mean by a safe space by paying attention to the listening mode of communication. In the next sections we explore temporality and territorialisation through the design microprotests Just Spaces which documents the collective imagining of safe places for LBPQ (Lesbian, Bisexual, Pansexual, and Queer) women and non-binary identities through a series of graphic objects and Conversation Piece, a book written, designed and published over three days as a proposition for a collective future

    Remote sensing peat erosion in the southern Pennines

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    The severe erosion of upland peat bog in the southern Pennines is a major environmental problem that requires mapping and monitoring at regular intervals. This paper presents preliminary results from an investigation of the use of hyperspectral remotely sensed data to provide timely and accurate information on peat extent and type. Both image classification and correlation analysis between reflectance and peat characteristics were investigated, with promising images of both peat type and degree of humification produced. The results from this ongoing study suggest that hyperspectral remote sensing offers an efficient and valuable tool in mapping and monitoring upland habitats

    Detection of high energy X-rays from the galactic center region

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    Observations of the galactic center region made with the high energy X-ray detector on OSO-8 are discussed. A strong hard X-ray which was detected during these observations from the vicinity of the galactic center are examined. The counting rate spectrum and the photon number spectrum of the flux are determined. Comparisons with the high energy X-ray fluxes observed from sources in the region by others are discussed

    The high-energy pulsed X-ray spectrum of HER X-1 as observed with OSO-8

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    Her X-1 was observed from 1977 August 30 to September 10 using the High-Energy X-Ray Scintillation Spectrometer on board the OSO-8 satellite. The observation, during which the source was monitored continually for nearly an entire ON-state, covered the energy range from 16 to 280 keV. Pulsed flux measurements as a function of binary orbit and binary phase are presented for energies between 16 and 98 keV. The pulsed flux between 16 and 33 keV exhibited a sharp decrease following the fourth binary orbit and was consistent with zero pulsed flux thereafter. The pulsed spectrum was fitted with a power law, a thermal spectrum without features, and a thermal spectrum with a superposed gaussian centered at 55 keV. The latter fit has the smallest value of chi - squared per degree of freedom, and the resulting integrated line intensity is 1.5 superscript + 4.1 subscript - 1.4 x .001 photons s superscript-1 cm superscript-2 for a width of 3.1 superscript + 9.1 subscript -2.6 keV. This result, while of low statistical significance, agrees with the value observed by Trumper (1978) during the same On-state

    LISA Response Function and Parameter Estimation

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    We investigate the response function of LISA and consider the adequacy of its commonly used approximation in the high-frequency range of the observational band. We concentrate on monochromatic binary systems, such as white dwarf binaries. We find that above a few mHz the approxmation starts becoming increasingly inaccurate. The transfer function introduces additional amplitude and phase modulations in the measured signal that influence parameter estmation and, if not properly accounted for, lead to losses of signal-to-noise ratio.Comment: 4 pages, 2 figures, amaldi 5 conference proceeding

    The possible statistical relation of Pc1 pulsations to Earthquake occurrence at low latitudes

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    We examine the association between earthquakes and Pc1 pulsations observed at a low-latitude station in Parkfield, California. The period under examination is ~7.5 years in total, from February 1999 to July 2006, and we use an automatic identification algorithm to extract information on Pc1 pulsations from the magnetometer data. These pulsations are then statistically correlated to earthquakes from the USGS NEIC catalog within a radius of 200 km around the magnetometer, and <I>M</I>>3.0. Results indicate that there is an enhanced occurrence probability of Pc1 pulsations ~5–15 days in advance of the earthquakes, during the daytime. We quantify the statistical significance and show that such an enhancement is unlikely to have occurred due to chance alone. We then examine the effect of declustering our earthquake catalog, and show that even though significance decreases, there is still a statistically significant daytime enhancement prior to the earthquakes. Finally, we select only daytime Pc1 pulsations as the fiducial time of our analysis, and show that earthquakes are ~3–5 times more likely to occur in the week following these pulsations, than normal. Comparing these results to other events, it is preliminarily shown that the normal earthquake probability is unaffected by geomagnetic activity, or a random event sequence

    Assessment of climate change effects on vegetation and river hydrology in a semi-arid river basin

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    Climate change plays a key role in changing vegetation productivity dynamics, which ultimately affect the hydrological cycle of a watershed through evapotranspiration (ET). Trends and correlation analysis were conducted to investigate vegetation responses across the whole Upper Jhelum River Basin (UJRB) in the northeast of Pakistan using the normalized difference vegetation index (NDVI), climate variables, and river flow data at inter-annual/monthly scales between 1982 and 2015. The spatial variability in trends calculated with the Mann-Kendall (MK) trend test on NDVI and climate data was assessed considering five dominant land use/cover types. The inter-annual NDVI in four out of five vegetation types showed a consistent increase over the 34-year study period; the exception was for herbaceous vegetation (HV), which increased until the end of the 1990s and then decreased slightly in subsequent years. In spring, significant (p<0.05) increasing trends were found in the NDVI of all vegetation types. Minimum temperature (Tmin) showed a significant increase during spring, while maximum temperature (Tmax) decreased significantly during summer. Average annual increase in Tmin (1.54°C) was much higher than Tmax (0.37°C) over 34 years in the UJRB. Hence, Tmin appears to have an enhancing effect on vegetation productivity over the UJRB. A significant increase in NDVI, Tmin and Tmax during spring may have contributed to reductions in spring river flow by enhancing evapotranspiration observed in the watershed of UJRB. These findings provide valuable information to improve our knowledge and understanding about the interlinkages between vegetation, climate and river flow at a watershed scale

    A Bayesian approach to the follow-up of candidate gravitational wave signals

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    Ground-based gravitational wave laser interferometers (LIGO, GEO-600, Virgo and Tama-300) have now reached high sensitivity and duty cycle. We present a Bayesian evidence-based approach to the search for gravitational waves, in particular aimed at the followup of candidate events generated by the analysis pipeline. We introduce and demonstrate an efficient method to compute the evidence and odds ratio between different models, and illustrate this approach using the specific case of the gravitational wave signal generated during the inspiral phase of binary systems, modelled at the leading quadrupole Newtonian order, in synthetic noise. We show that the method is effective in detecting signals at the detection threshold and it is robust against (some types of) instrumental artefacts. The computational efficiency of this method makes it scalable to the analysis of all the triggers generated by the analysis pipelines to search for coalescing binaries in surveys with ground-based interferometers, and to a whole variety of signal waveforms, characterised by a larger number of parameters.Comment: 9 page
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