94,819 research outputs found

    Disabled Autonomy

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    Disability law is still undertheorized. In 2007, Ruth Colker wrote that disability law was undertheorized because it conflated “separate” with “unequal,” and because disability was largely ignored or poorly understood within theories of justice. The solution for Colker was to attach the anti-subordination perspective, which was developed to apply to race and sex, directly to disability. This Article argues that this transportation from the race and sex contexts was a partial solution, but is not sufficient to give full substance to disability law theory. Concepts from critical race theory and feminist jurisprudence have long been simply transported into the disability context, acting as an imperfect facsimile. The primary purpose of those concepts was to describe, analyze, and remedy problems primarily related to race and gender, not disability. While disability law has benefitted to some extent from inclusion in these legal theories, many of the unique features and complexities of disability law have been left on the table. This Article explores those complexities. Autonomy, usually thought of as an uncomplicated social good for other groups, is challenged in disability theory by two competing values. The value of anti-subordination is critical because it seeks to address, and redress, discrimination, sigma, and stereotyping. An anti-subordination perspective gives a voice and supplies resources to people with disabilities, and will counsel against choices that support stigma and stereotyping. An anti-subordination perspective might seek to limit a right to physician-assisted suicide, for example, because of concerns about exploitation and the messaging that disabled lives are not worth living. This runs counter to an autonomy-focused perspective, which would support the choice to end one’s life in the end stages of a terminal disease. An anti-eliminationism perspective advocates for the preservation of, and resources for, disabled lives. This comes to mean that not only are people with disabilities valued, but their disability is valued too. Instead of seeking to end Autism, for example, an anti-elimination perspective seeks to support Autistics. However, an anti-eliminationism perspective might also support the restriction of choice, and therefore come into conflict with autonomy, where there is a choice that results in the end of a disability. An anti-elimination perspective could seek to restrict the ability to selectively terminate pregnancies when a disability is found, for example. Anti-eliminationism inherently challenges the notion that getting rid of disability is a good thing. Parts I, II, and III of this Article describe the values of autonomy, anti-subordination, and anti-eliminationism in the disability context, and argue that these values are each critical components of disability law and theory. Part IV of this article provides an overview of some real-world examples where these values come into immediate conflict

    Facilitative Leadership: One Approach to Empowering Staff and Other Stakeholders

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    This article defines facilitative leadership as advocated by Roger Schwarz and describes the use of this relatively new leadership approach in a public library system. It lists and defines the four core values followed in Schwarz???s approach: valid information, free and informed choice, internal commitment, and compassion. It further describes the use of left-hand column cases as developed by Chris Argyris to identify one???s own theory in use. Model one and model two theories in use as developed by Argyris are discussed. The article then briefly describes the experiences of using the Schwarz principles in a library organization.published or submitted for publicatio

    Latching overcurrent circuit breaker

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    Circuit breaker consists of a preset current amplitude sensor, and a lamp-photo-resistor combination in a feedback arrangement which energizes a power switching relay. The ac input power is removed from the load at predetermined current amplitudes

    Topological invariants of time-reversal-invariant band structures

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    The topological invariants of a time-reversal-invariant band structure in two dimensions are multiple copies of the Z2\mathbb{Z}_2 invariant found by Kane and Mele. Such invariants protect the topological insulator and give rise to a spin Hall effect carried by edge states. Each pair of bands related by time reversal is described by a single Z2\mathbb{Z}_2 invariant, up to one less than half the dimension of the Bloch Hamiltonians. In three dimensions, there are four such invariants per band. The Z2\mathbb{Z}_2 invariants of a crystal determine the transitions between ordinary and topological insulators as its bands are occupied by electrons. We derive these invariants using maps from the Brillouin zone to the space of Bloch Hamiltonians and clarify the connections between Z2\mathbb{Z}_2 invariants, the integer invariants that underlie the integer quantum Hall effect, and previous invariants of T{\cal T}-invariant Fermi systems.Comment: 4 page

    Active Cavity Radiometer (ACR)

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    The active cavity radiometer (ACR) measures the total solar irradiance to determine the magnitude and direction of variations in the total solar radiative output. The ACR is an electrically self calibrating cavity pyroheliometer capable of measuring the total solar irradiance with an absolute accuracy better than 0.2% and capable of detecting changes in the total irradiance smaller than 0.001%. The data will be used to study the physical behavior of the Sun and the Earth's climate

    Empirical studies of solar flares: Comparison of X-ray and H alpha filtergrams and analysis of the energy balance of the X-ray plasma

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    The physics of solar flares was investigated through a combined analysis of X-ray filtergrams of the high temperature coronal component of flares and H alpha filtergrams of the low temperature chromospheric component. The data were used to study the magnetic field configuration and its changes in solar flares, and to examine the chromospheric location and structure of X-ray bright points (XPB) and XPB flares. Each topic and the germane data are discussed. The energy balance of the thermal X-ray plasma in flares, while not studied, is addressed

    Soft X-Ray Telescope (SXRT)

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    The soft X-ray telescope (SXRT) will provide direct images of the solar corona with spatial resolution of about 1 arcsecond. These images will show the global structure of the corona, the location and area of coronal holes, and the presence of even the smallest active regions and flares. The good spatial resolution will show the fine scale magnetic structure and changes in these phenomena. These observations are essential for monitoring, predicting, and understanding the solar magnetic cycle, coronal heating, solar flares, coronal mass ejections, and the solar wind. These observations complement those of the White Light Coronagraph and Ultra-Violet Coronal Spectrometer; the SXRT will detect active regions and coronal holes near the east limb, thereby giving a week or more of advanced warning for disturbed geomagnetic conditions at Earth. The instrument consists of a grazing incidence collecting mirror with a full disk film camera at the primary focus, and a secondary relay optic that feeds a CCD camera with a field of view about the size of an average active region

    Solar Ultraviolet Spectral Irradiance Monitor (SUSIM)

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    The solar ultraviolet spectral irradiance monitor (SUSIM) measures the ultraviolet flux from the entire Sun with high absolute accuracy over the wavelength range 120 to 400 nm with a resolution of 0.1 nm. SUSIM consists of two identical double dispersion scanning spectrometers with 5 photodiodes, 2 photon counters, and a deuterium lamp calibration source, all sealed in a canister pressurized to 1.1 atmosphere of argon. One spectrometer is used almost continuously during sunlight, the other is used once per day as a calibration check. The observations will yield improved absolute measurements of the ultraviolet solar fluxes, provide an accurate reference for studies of variability of the solar fluxes on the time scales of the solar cycle and longer, and measure shorter term changes as well. These measurements complement the active cavity radiometer (ACR) measurements of the total solar irradiance. The data will be used to study the physical behavior of the Sun and the Earth's atmosphere, weather, and climate
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