1,082 research outputs found
Population Density of Congressional Districts in the Mountain West
This fact sheet reports the population density of congressional districts in the Mountain West states, and the party representation in the House of Representatives for both the 2016 and 2018 general elections. This fact sheet utilizes a model from Bloomberg CityLab, the Congressional Density Index (CDI), originally published November 20, 2018
Electric Levitation Using ε-Near-Zero Metamaterials
[EN] The ability to manufacture metamaterials with exotic electromagnetic properties has potential for surprising new applications. Here we report how a specific type of metamaterial-one whose permittivity is near zero-exerts a repulsive force on an electric dipole source, resulting in levitation of the dipole. The phenomenon relies on the expulsion of the time-varying electric field from the metamaterial interior, resembling the perfect diamagnetic expulsion of magnetostatic fields. Leveraging this concept, we study some realistic requirements for the levitation or repulsion of a polarized particle radiating at any frequency, from microwave to optics.This work is supported in part by the US Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI) Grant No. N00014-10-1-0942. F. J. R.-F. acknowledges financial support from Grant FPI of GV and the Spanish MICINN under Contracts No. CONSOLIDER EMET CSD2008-00066 and No. TEC2011-28664-C02-02.RodrĂguez Fortuño, FJ.; Vakil, A.; Engheta, N. (2014). Electric Levitation Using ε-Near-Zero Metamaterials. Physical Review Letters. 112(3):33902-1-33902-5. https://doi.org/10.1103/PhysRevLett.112.033902S33902-133902-5112
Accountability, Strategy, and International Non-Governmental Organizations
Increased prominence and greater influence expose international non-governmental development and environmental organizations (INGOs) to increased demands for accountability from a wide variety of stakeholdersdonors, beneficiaries, staffs, and partners among others. This paper focuses on developing the concept of INGO accountability, first as an abstract concept and then as a strategic idea with very different implications for different INGO strategies. We examine those implications for INGOs that emphasize service delivery, capacity-building, and policy influence. We propose that INGOs committed to service delivery may owe more accountability to donors and service regulators; capacity-building INGOs may be particularly obligated to clients whose capacities are being enhanced; and policy influence INGOs may be especially accountable to political constituencies and to influence targets. INGOs that are expanding their activities to include new initiatives may need to reorganize their accountability systems to implement their strategies effectively. This publication is Hauser Center Working Paper No. 7. The Hauser Center Working Paper Series was launched during the summer of 2000. The Series enables the Hauser Center to share with a broad audience important works-in-progress written by Hauser Center scholars and researchers
Sex-specific risk factor profile in oesophageal adenocarcinoma
A nationwide Swedish case–control study of 388 men and 63 women with adenocarcinoma of the oesophagus and gastro-oesophageal function and 676 men controls and 140 women investigated whether sex differences in aetiology contribute to male predominance. Compared with men, women seemed more vulnerable to reflux (odds ratio (OR)=4.6, 95% confidence interval (CI)=2.0–10.5 vs OR=3.4, 95% CI=2.5–4.6), obesity (OR=10.3, 95% CI=2.6–42.3 vs OR=5.4, 95% CI=2.6–10.8) and smoking (OR=5.3, 95% CI=2.0–14.1 vs OR=2.8, 95% CI=1.9–4.2), less harmed by low intake of fruit and vegetables (OR=0.9, 95% CI 0.3–2.4 vs OR=1.6, 95% CI=1.1–2.2) and less protected by Helicobacter pylori infection (OR=0.5, 95% CI=0.3–0.8 vs OR=1.6, 95% CI=0.5–5.4)
Tunable hybrid surface waves supported by a graphene layer
We study surface waves localized near a surface of a semi-infinite dielectric
medium covered by a layer of graphene in the presence of a strong external
magnetic field. We demonstrate that both TE-TM hybrid surface plasmons can
propagate along the graphene surface. We analyze the effect of the Hall
conductivity on the disper- sion of hybrid surface waves and suggest a
possibility to tune the plasmon dispersion by the magnetic field.Comment: 3 pages, 3 figure
Geography of Debt in Nevada Counties
This Fact Sheet summarizes and expands on the Urban Institute’s Debt in America: An Interactive Map online interactive dataset. The original data source offers statistics on the share of individuals in both white communities and communities of color with debt in collections, as well as the median value of this debt. The dataset further itemizes this information by medical, student loan, and automobile debt organized within counties and states. Data are presented for white communities and communities of color in Nevada’s most populous counties: Clark and Washoe
Tegaserod Treatment for Dysmotility-Like Functional Dyspepsia: Results of Two Randomized, Controlled Trials
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/74639/1/j.1572-0241.2008.01953.x.pd
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