13,060 research outputs found

    Standing on Unstable Grounds: A Reexamination of the WLBT-TV Case

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    In 1962, the Jackson Nonviolent Movement began to change business as usual in Mississippi. The upstart organization, comprised largely of local teens, targeted prominent Jackson businesses, demanding that basic employment and consumer rights be extended to African Americans. They insisted that the segregation, degradation, and physical abuse grimly familiar to black consumers in the white marketplace be confronted and addressed. In the spring, when a pregnant African-American mother was verbally and physically assaulted by a white grocer, the Movement called a church meeting, distributed leaflets, and led a successful boycott against the store. Months later, this strategy was reemployed with a massive boycott of downtown businesses and the demand that Negro consumers ... [be] treated as they ought to be-as first class citizens (Salter, 1987, pp. 36, 56)

    Lawyers Not in Love, The Defenders and Sixties TV

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    This essay offers a social history and examination of The Defenders as a popular, criti- cally acclaimed television text that negotiated anxieties regarding crime, law, justice, lib- eralism, and masculinity in the 1960s and 1990s. Both The Defenders television series (1961–1965) and the Showtime motion picture series (1997–1998) by the same name rearticulated enduring tensions between law’s formalism and just desires for compassion and mercy, depicting defense attorneys as men who work both inside and outside of “law” to ensure justice and confront the lack of humanism in “the rule of law.” Such discourses are understood and appreciated in different ways in different times, particularly as the cultural politics of nostalgia are engaged. The Defenders offers clear illustrations of the ways in which popular narratives not only depict juridical roles but also perform them, specifying when and where “law” begins and ends

    Television (From The Mississippi Encyclopedia)

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    Television came relatively late to Mississippi and several other southern states. Following a federal freeze on licensing new stations by the Federal Communications Commission (FCC), television stations came on air in 1953 in Mississippi, Arkansas, and South Carolina. Over the next three years Mississippians built six stations-first WJTV and WLBT in Jackson and WCOC in Meridian and later WCBI in Columbus, WDAM in Hattiesburg, and WTWV in Tupelo. Anticipating WJTV\u27s first broadcast, Pres. Dwight D. Eisenhower\u27s January 1953 inauguration, the station\u27s general manager, John Rossitor, told city leaders and educators that television would bring the world into your home and accent friendliness among neighbors in this city and state:\u2

    Introduction (Watching Jim Crow: The Struggles Over Mississippi Television, 1955-1969.)

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    The broadcast complex that houses WLBT-TV remains today where it has always been, a few blocks outside the modest cluster of skyscrapers that defines downtown Jackson, Mississippi. Built in the 1950s a short distance from prominent businesses and seats of government, the center\u27s managers have long enjoyed proximity to political and economic power. But as the years have passed, station planners have faced the problem of updating the center\u27s aging physical plant and technologies. The architectural results are an eclectic mix- a layering of the new upon the old- as a consequence of repeated remodeling projects. While the station\u27s original brick facade remains at the public entrance, behind it the furnishings have been dramatically changed to reflect contemporary needs and concerns. Familiar spaces remain but have been transformed: the cramped dressing rooms and viewing areas built to keep Negro performers apart from white audiences have been radically redesigned for contemporary uses. Traces of a past station remain, reconfigured for the present

    Inside Job: Diagnosing Bluetooth Lower Layers Using Off-the-Shelf Devices

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    Bluetooth is among the dominant standards for wireless short-range communication with multi-billion Bluetooth devices shipped each year. Basic Bluetooth analysis inside consumer hardware such as smartphones can be accomplished observing the Host Controller Interface (HCI) between the operating system's driver and the Bluetooth chip. However, the HCI does not provide insights to tasks running inside a Bluetooth chip or Link Layer (LL) packets exchanged over the air. As of today, consumer hardware internal behavior can only be observed with external, and often expensive tools, that need to be present during initial device pairing. In this paper, we leverage standard smartphones for on-device Bluetooth analysis and reverse engineer a diagnostic protocol that resides inside Broadcom chips. Diagnostic features include sniffing lower layers such as LL for Classic Bluetooth and Bluetooth Low Energy (BLE), transmission and reception statistics, test mode, and memory peek and poke

    Instabilities on graphene's honeycomb lattice with electron-phonon interactions

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    We study the impact of electron-phonon interactions on the many-body instabilities of electrons on the honeycomb lattice and their interplay with repulsive local and non-local Coulomb interactions at charge neutrality. To that end, we consider in-plane optical phonon modes with wavevectors close to the Γ\Gamma point as well as to the K,KK, -K points and calculate the effective phonon-mediated electron-electron interaction by integrating out the phonon modes. Ordering tendencies are studied by means of a momentum-resolved functional renormalization group approach allowing for an unbiased investigation of the appearing instabilities. In the case of an exclusive and supercritical phonon-mediated interaction, we find a Kekul\'e and a nematic bond ordering tendency being favored over the ss-wave superconducting state. The competition between the different phonon-induced orderings clearly shows a repulsive interaction between phonons at small and large wavevector transfers. We further discuss the influence of phonon-mediated interactions on electronically-driven instabilities induced by onsite, nearest neighbor and next-to-nearest neighbor density-density interactions. We find an extension of the parameter regime of the spin density wave order going along with an increase of the critical scales where ordering occurs, and a suppression of competing orders.Comment: 9 pages, 5 figure

    Ladder-like optical conductivity in the spin-fermion model

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    In the nested limit of the spin-fermion model for the cuprates, one-dimensional physics in the form of half-filled two-leg ladders emerges. We show that the renormalization group flow of the corresponding ladder is towards the d-Mott phase, a gapped spin-liquid with short-ranged d-wave pairing correlations, and reveals an intermediate SO(5)×\timesSO(3) symmetry. We use the results of the renormalization group in combination with a memory-function approach to calculate the optical conductivity of the spin-fermion model in the high-frequency regime, where processes within the hot spot region dominate the transport. We argue that umklapp processes play a major role. For finite temperatures, we determine the resistivity in the zero-frequency (dc) limit. Our results show an approximate linear temperature dependence of the resistivity and a conductivity that follows a non-universal power law. A comparison to experimental data supports our assumption that the conductivity is dominated by the antinodal contribution above the pseudogap.Comment: 11+2 pages, 8 figure

    Fermion-induced quantum criticality in two-dimensional Dirac semimetals: Non-perturbative flow equations, fixed points and critical exponents

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    We establish a scenario where fluctuations of new degrees of freedom at a quantum phase transition change the nature of a transition beyond the standard Landau-Ginzburg paradigm. To this end we study the quantum phase transition of gapless Dirac fermions coupled to a Z3\mathbb{Z}_3 symmetric order parameter within a Gross-Neveu-Yukawa model in 2+1 dimensions, appropriate for the Kekul\'e transition in honeycomb lattice materials. For this model the standard Landau-Ginzburg approach suggests a first order transition due to the symmetry-allowed cubic terms in the action. At zero temperature, however, quantum fluctuations of the massless Dirac fermions have to be included. We show that they reduce the putative first-order character of the transition and can even render it continuous, depending on the number of Dirac fermions NfN_f. A non-perturbative functional renormalization group approach is employed to investigate the phase transition for a wide range of fermion numbers. For the first time we obtain the critical NfN_f, where the nature of the transition changes. Furthermore, it is shown that for large NfN_f the change from the first to second order of the transition as a function of dimension occurs exactly in the physical 2+1 dimensions. We compute the critical exponents and predict sizable corrections to scaling for Nf=2N_f =2.Comment: 12+5 pages, 5 figure

    Disparate responses of above- and belowground properties to soil disturbance by an invasive mammal

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    Introduced mammalian herbivores can negatively affect ecosystem structure and function if they introduce a novel disturbance to an ecosystem. For example, belowground foraging herbivores that bioturbate the soil, may alter process rates and community composition in ecosystems that lack native belowground mammalian foragers. Wild boar (Sus scrofa) disturb the soil system and plant community via their rooting behavior in their native range. Given their size and the numbers in their populations, this disturbance can be significant in forested ecosystems. Recently, wild boar were introduced to Patagonian forests lacking native mammalian herbivores that forage belowground. To explore how introduced wild boar might alter forested ecosystems, we conducted a large-scale wild boar exclusion experiment in three different forest types (Austroducedrus chilensis forest, Nothofagus dombeyi forest, and shrublands). Wild boar presence altered plant composition and structure, reducing plant biomass 3.8-fold and decreasing both grass and herb cover relative to areas where wild boar were excluded. Decomposition rates and soil compaction also declined by 5% in areas where boar had access; however, rooting had no effect on soil nutrient stocks and cycling. Interestingly, there were no differences in wild boar impacts on different forest types. We found that after 3-years of exclusion, belowground foraging by wild boar had a larger impact on plant community structure and biomass than it did on soil nutrient processes.Fil: Barrios Garcia Moar, Maria Noelia. Administración de Parques Nacionales. Delegación Regional Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Classen, Aimee T.. University of Tennessee; Estados UnidosFil: Simberloff, Daniel. University of Tennessee; Estados Unido
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