\u3ci\u3eRedistricting Reform in Wisconsin to Curtail Gerrymandering: The Wisconsin Impartial Citizens Redistricting Commission\u3c/i\u3e

After an extremely partisan gerrymander in 2011, Wisconsin needs redistricting reform in order to eliminate partisan politics from the process. Now more than ever, momentum for change has reached its peak: the Wisconsin legislative maps as drawn in 2011 were ruled unconstitutional in Whitford v. Gill; the Supreme Court has recently ruled in favor of states implementing independent redistricting commissions; and nearly half of the states in the United States are beginning to use independent commissions for redistricting. This Comment proposes a unique approach for Wisconsin to adopt in order to curtail gerrymandering: the Wisconsin Impartial Citizens Redistricting Commission (WICRC). Under this scheme, Wisconsin would go further than other states and employ a commission comprised of nonvoting or seldom voting citizens who are selected by the Wisconsin Elections Commission in a process that parallels jury selection. The WICRC would be provided with population data and partisanship scores in order to reduce partisan bias while maximizing competition. While this approach may seem counter-intuitive, at the very least this Comment serves as a thought experiment in an effort to inspire redistricting reform in Wisconsin, and perhaps elsewhere in the United States

Techniques for fire detection

An overview is given of the basis for an analysis of combustable materials and potential ignition sources in a spacecraft. First, the burning process is discussed in terms of the production of the fire signatures normally associated with detection devices. These include convected and radiated thermal energy, particulates, and gases. Second, the transport processes associated with the movement of these from the fire to the detector, along with the important phenomena which cause the level of these signatures to be reduced, are described. Third, the operating characteristics of the individual types of detectors which influence their response to signals, are presented. Finally, vulnerability analysis using predictive fire modeling techniques is discussed as a means to establish the necessary response of the detection system to provide the level of protection required in the application

The relationship between morality, popularity and acceptance among children

1245 children (mean age = 10.42) participated in the study (681 female). Data collection took place in Montréal, Canada (MO, n = 382) and Barranquilla, Colombia (BA, n = 863), from either high SES (n = 528) or low SES (n = 717). Subjects rated each other for levels of justice, care, popularity and acceptance. Care and justice were found to be strongly related to acceptance (r =0.43 and r = 0.40, respectively) and less strongly related to popularity (r = 0.32 and r = 0.31, respectively). Care and justice were highly positively correlated to each other (r = 0.61) as were acceptance and popularity (r = 0.45). Using multiple regression, care was most predictive of popularity in low SES BA boys and low SES MO girls. On the other hand, care was the least predictive of popularity in high SES MO girls and high SES BA boys. Justice was most predictive of popularity in low SES and high SES BA boys as well as low SES BA girls. Finally, justice was the least predictive of popularity in low SES MO boys and high SES BA girls. Both care and justice predicted popularity and acceptance, though more strongly for acceptance. Based on Piagetian thought, the relationship between morality and acceptance suggests “mutual respect.” On the other hand, the weaker relationship between morality and popularity may demonstrate a form of “unilateral respect” exemplifying authority (within the peer group)

Muon-spin rotation measurements of the penetration depth of the Mo_3Sb_7 superconductor

Measurements of the magnetic field penetration depth \lambda in superconductor Mo_3Sb_7 (T_c~2.1 K) were carried out by means of muon-spin-rotation. The absolute values of \lambda, the Ginzburg-Landau parameter \kappa, the first H_{c1} and the second H_{c2} critical fields at T=0 are \lambda(0)=720(100)nm, \kappa(0)=55(9), \mu_0H_{c1}(0)=1.8(3)mT, and \mu_0H_{c2}(0)=1.9(2)T. The zero temperature value of the superconducting energy gap \Delta(0) was found to be 0.35(1)meV corresponding to the ratio 2\Delta(0)/k_BT_c=3.83(10). At low temperatures \lambda^{-2}(T) saturates and becomes constant below T~0.3T_c, in agreement with what is expected for s-wave BCS superconductors. Our results suggest that Mo_3Sb_7 is a BCS superconductor with the isotropic energy gapComment: 5 pages, 4 figure

Magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 as revealed by single-crystal neutron diffraction

The magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 is unambiguously determined by single-crystal neutron diffraction. A long-range ferromagnetic order of the Eu2+ moments along the c-direction is revealed below the magnetic phase transition temperature Tc = 17 K. In addition, the antiferromagnetism of the Fe2+ moments still survives and the tetragonal-to-orthorhombic structural phase transition is also observed, although the transition temperatures of the Fe-spin density wave (SDW) order and the structural phase transition are significantly suppressed to Tn = 70 K and Ts = 90 K, respectively, compared to the parent compound EuFe2As2.We present the microscopic evidences for the coexistence of the Eu-ferromagnetism (FM) and the Fe-SDW in the superconducting crystal. The superconductivity (SC) competes with the Fe-SDW in Eu(Fe0.82Co0.18)2As2.Moreover, the comparison between Eu(Fe1-xCox)2As2 and Ba(Fe1-xCox)2As2 indicates a considerable influence of the rare-earth element Eu on the magnetism of the Fe sublattice.Comment: 7 pages, 7 figures, accepted for publication in Physical Review

Hydrostatic pressure effects on the static magnetism in Eu(Fe0.925_{0.925}Co0.075_{0.075})2_{2}As2_{2}

The effects of hydrostatic pressure on the static magnetism in Eu(Fe$_{0.925}$Co$_{0.075}$)$_{2}$As$_{2}$ are investigated by complementary electrical resistivity, ac magnetic susceptibility and single-crystal neutron diffraction measurements. A specific pressure-temperature phase diagram of Eu(Fe$_{0.925}$Co$_{0.075}$)$_{2}$As$_{2}$ is established. The structural phase transition, as well as the spin-density-wave order of Fe sublattice, is suppressed gradually with increasing pressure and disappears completely above 2.0 GPa. In contrast, the magnetic order of Eu sublattice persists over the whole investigated pressure range up to 14 GPa, yet displaying a non-monotonic variation with pressure. With the increase of the hydrostatic pressure, the magnetic state of Eu evolves from the canted antiferromagnetic structure in the ground state, via a pure ferromagnetic structure under the intermediate pressure, finally to a possible "novel" antiferromagnetic structure under the high pressure. The strong ferromagnetism of Eu coexists with the pressure-induced superconductivity around 2 GPa. The change of the magnetic state of Eu in Eu(Fe$_{0.925}$Co$_{0.075}$)$_{2}$As$_{2}$ upon the application of hydrostatic pressure probably arises from the modification of the indirect Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the Eu$^{2+}$ moments tuned by external pressure.Comment: 9 pages, 6 figure