34,625 research outputs found
Crime and Inflation in U. S. Cities
No full textObjectivesThe current study replicates prior national-level research on the relationship between crimes committed for monetary gain and inflation in a sample of 17 U. S. cities between 1960 and 2013. Methods A random coefficients model is used to estimate the effects of inflation on the change in acquisitive crime over time, controlling for other influences. Results The estimates yield significant effects of inflation on acquisitive crime rates in the 17 cities. City-specific coefficients reveal nontrivial variation across the cities in the significance, size, and impact of inflation on acquisitive crime.Conclusions Continued low inflation rates should restrain future crime increases in many US cities. U. S. monetary policy should be evaluated with respect to its effect on crime.Accepted Author ManuscriptOLD Urban Renewal and Housin
Energy dissipation and flux laws for unsteady turbulence
No full textDirect Numerical Simulations of spatially periodic unsteady turbulence show that the high Reynolds number scalings of the instantaneous energy dissipation rate and interscale energy flux at intermediate wavenumbers are qualitatively different from the well-known cornerstone scalings of equilibrium turbulence where and are time-dependent rms velocity and integral length-scales. Instead, they both scale as where and are length and velocity scales characterizing initial/overall unsteady turbulence conditions
Elliptic flow of identified hadrons in Pb-Pb collisions at root(NN)-N-s=2.76 Tev
No full textThe elliptic flow coefficient (v(2)) of identified particles in Pb-Pb collisions at root s(NN) = 2.76 TeV was measured with the ALICE detector at the Large Hadron Collider (LHC). The results were obtained with the Scalar Product method, a two-particle correlation technique, using a pseudo-rapidity gap of |Delta eta| > 0.9 between the identified hadron under study and the reference particles. The v (2) is reported for pi(+/-), K-+/-, K-S(0), p+(p) over bar, phi, Lambda+(Lambda) over bar, Xi+(Xi) over bar (+) and Omega(-)+(Omega) over bar (+) in several collision centralities. In the low transverse momentum (p(T)) region, p(T) < 3 GeV/c, v(2)(p(T)) exhibits a particle mass dependence consistent with elliptic flow accompanied by the transverse radial expansion of the system with a common velocity field. The experimental data for pi (+/-) and the combined K-+/- and K-S(0) results, are described fairly well by hydrodynamic calculations coupled to a hadronic cascade model (VISHNU) for central collisions. However, the same calculations fail to reproduce the v(2)(p(T)) for p+(p) over bar, phi, Lambda+(Lambda) over bar, Xi+(Xi) over bar (+). For transverse momentum values larger than about 3 GeV/c, particles tend to group according to their type, i.e. mesons and baryons. The present measurements exhibit deviations from the number of constituent quark (NCQ) scaling at the level of +/- 20% for p(T) > 3 GeV/
Effects of PbO on the repassivation kinetics of alloy 690
No full textEffects of PbO on the repassivation kinetics of alloy 690 were examined to elucidate the reason why the alloy, otherwise immune, is susceptible to stress corrosion cracking (SCC) in high temperature water contaminated with a small amount of Pb compounds. The repassivation kinetics of the alloy was analyzed in terms of the current density i(t) flowing from the scratch as a function of the charge density q(t) that has flowed from the scratch. During the repassivation on the scratched surface of the alloy, passive film initially nucleated and grew according to the place exchange model in which log i(t) is linearly proportional to q(t), and then grew according to the high-field ion conduction model in which log i(t) is linearly proportional to 1/q(t) with a slope of cBT; a parameter of repassivation rate. The higher the cBV, the slower is the repassivation rate of an alloy. The cBV of alloy 690 was increased significantly in water with PbO compared with that in water without PbO, suggesting that the PbO decreased the repassivation rate of the alloy, and hence reduced the resistance to SCC. The decrease in repassivation rate of the alloy resulted from both Pb-induced Cr dissolution and an incorporation of Pb compounds into the passive film during repassivation. (c) 2005 Elsevier Ltd. All rights reserved.The authors acknowledge the financial support of Korea Atomic Research Institute
(KAERI). This work was partly supported by the Brain Korea 21 project
U. S. Marines
No full textU. S. Marines date: 1916 illustrator/author: Sidney H. Riesenberg agency: U. S. Marine Corps size: 101.6 x 76.2 cmhttps://digicom.bpl.lib.me.us/wwII_posters_recruit/1003/thumbnail.jp
Spatially-localized time dependent solutions including turbulence and their interactions in 2D Kolmogorov flow
No full textIn 2D Kolmogorov flow in small aspect ratio domains, spatially-localized solutions such as kink, traveling or time-dependent kink-antikink pars coexist. However, the conservation of the flow rate in the y direction strongly restrict combination of localized solutions and their positioning. We find that by adding a homogeneous flow U y their positioning is controlled and each of localized solutions including a spatially-localized chaos is isolated. Numerical results suggest that these isolated solutions can be elements constructing a whole flow
Liogluta rufescens Lee & Ahn, sp. nov.
No full textLiogluta rufescens Lee & Ahn, sp. nov. (Figs. 1 G, 8) Description. Length 2.0– 2.3 mm. Body (Fig. 1 G) parallel-sided; surface fairly glossy and densely pubescent, with microsculpture. Body reddish brown; head reddish black; elytra and legs paler, yellowish brown; abdominal segments V–VIII darker than other segments. Head. Subquadrate, approximately 1.0–1.1 times as wide as long, widest across eyes, slightly narrower than pronotum; eyes moderate in size and slightly prominent, about 1.0–1.2 times as long as temples; gular sutures moderately separated, diverged basally; infraorbital carina complete; cervical carina complete. Antennae (Fig. 8 A) long and slender; antennomeres 1–3 elongate, 1 longest, 2 slightly longer than 3, 4–10 subquadrate to slightly transverse, 11 longer than wide, about as long as preceding two combined. Mouthparts. Labrum transverse, emarginate in anterior margin, with ε-sensillum and about 9 macrosetae on each side of midline; epipharynx with several sensilla, including 2 lateral sensory rows on each side of midline; α-sensillum long and setaceous, about 2.0 times as long as ε-sensillum, β- and γ-sensilla very short. Mandibles asymmetrical, subtriangular, decurved and pointed apically, about 1.5–1.6 times as long as basal width; minute denticles present in molar region; right one with small internal tooth, internal margin slightly serrulate; prostheca developed, composited three portions. Galea and lacinia of maxilla long and slender; lacinia composited seven spines in distal comb region, contiguous with two isolated spines; maxillary palpus elongate, with pubescence and long setae; palpomere 1 smallest, 2 about 2.5–2.7 times as long as wide, 3 slightly longer than 2, about 2.4–2.6 times as long as wide, 4 digitiform, filamentous sensilla not reaching to basal half. Labium with ligula elongate, divided into 2 lobes in basal half; prementum with two medial setae widely separated; two basal pores moderately separated, about 2.0 times width of basal pore; several medial pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpus with many setulae; palpomere 1 largest, about 1.5–1.7 times as long as wide, γ-setula contiguous with b-seta, 2 shortest, about 1.2–1.4 times as long as wide, 3 parallelsided and about as long as 1, about 3.0 times as long as wide. Mentum trapezoidal, anterior margin almost straight; v-seta relatively long, close to u-setae. Thorax. Pronotum slightly transverse, approximately 1.2–1.3 times as wide as long, widest in apical third; hypomera fully visible in lateral aspect. Metanotal scutum with 1 long seta and about 2 relatively short setae on each side of midline. Mesocoxal cavities moderately separated, mesoventral process pointed at apex, slightly longer than isthmus and metaventral process combined; isthmus about as long as metaventral process. Elytra longer and slightly wider than pronotum; elytron approximately 1.4–1.5 times as long as wide, pubescence directed posteriorly and postero-laterally; postero-lateral margin straight; hind wings fully developed, flabellum composed of about 6 long setose lobes. Legs. Slender and long, with pubescence and macrosetae; tibiae with different length of two spurs at apex; tarsal formula 4-5-5, meso- and metatarsomere 1–4 subequal in length; one empodial seta present, shorter than claw. Abdomen. Parallel-sided; surface fairly glossy and densely pubescent, with imbricate microsculpture; macrochaetal arrangement of tergites II–VI 01-13-13 -13-13; male tergite VIII (Fig. 8 B) with 4 macrosetae on each side of midline, broad process present in median region and posterior margin denticulate; male sternite VIII (Fig. 8 C) with 9 macrosetae on each side of midline, posterior margin slightly convex, with inconspicuous marginal setae; posterior margin of female tergite VIII subtruncate; posterior margin of female sternite VIII slightly emarginate, with conspicuous and long marginal setae, minute setae in median region. Aedeagus. Median lobe (Figs. 8 D–E) narrowly ovate and widest in basal fourth, apical process elongate and parallel-sided, convergent at apex in ventral aspect; internal sac developed. Apical lobe of paramerites (Fig. 8 F) with four setae; a-seta longest, c- and d-setae shorter than b-seta, close together and positioned apically. Type material. Holotype, ♂, labeled as follows: ‘ KOREA: Seoul, Dobong-gu, Mt. Bukhansan, 24 III 1988, Y. S. Kim, ex leaf litter; HOLOTYPE Liogluta rufescens Lee and Ahn 2016 ’. Desig. S.-G. Lee and K.-J. Ahn 2016. Paratypes, 3 exx. (one on slide), same data as Holotype. Distribution. Korea (South). Remarks. Adults are very similar to those of L. distans, but can be distinguished by the characters provided in the key and different shape and structure of aedeagus. Etymology. Named from the Latin rufescens meaning ‘‘red, reddish” which refers to the body color.Published as part of Lee, Seung-Gyu & Ahn, Kee-Jeong, 2016, A taxonomic review of Korean Liogluta Thomson (Coleoptera, Staphylinidae, Aleocharinae) with descriptions of three new species, pp. 285-303 in Zootaxa 4193 (2) on pages 299-301, DOI: 10.11646/zootaxa.4193.2.5, http://zenodo.org/record/16691
Measurements of small radius ratio turbulent Taylor-Couette flow
No full textIn Taylor-Couette flow, the radius ratio () is one of the key parameters of the system. For small , the asymmetry of the inner and outer boundary layer becomes more important, affecting the general flow structure and boundary layer characteristics. Using high-resolution particle image velocimetry we measure flow profiles for a radius ratio of 0.5 and Taylor number of up to . By measuring at varying heights, roll structures are characterized for two different rotation ratios of the inner and outer cylinder. In addition, we investigate how the turbulent bursts coming from the inner and outer cylinder affect the flow profiles. These results exemplify how curvature affects flow in strongly turbulent Taylor-Couette Flow
Measurement of Prompt D-Meson Production in p-Pb Collisions at root s(NN)=5.02 TeV
No full textThe p(T)-differential production cross sections of the prompt charmed mesons D-0, D+, D*(-), and D-s(+) and their charge conjugate in the rapidity interval -0.96 < y(cms) < 0.04 were measured in p-Pb collisions at a center-of-mass energy root s(NN) = 5.02 TeV with the ALICE detector at the LHC. The nuclear modification factor R-pPb, quantifying the D-meson yield in p-Pb collisions relative to the yield in pp collisions scaled by the number of binary nucleon-nucleon collisions, is compatible within the 15%-20% uncertainties with unity in the transverse momentum interval 1 < p(T) < 24 GeV/c. No significant difference among the R-pPb of the four D-meson species is observed. The results are described within uncertainties by theoretical calculations that include initial-state effects. The measurement adds experimental evidence that the modification of the momentum spectrum of D mesons observed in Pb-Pb collisions with respect to pp collisions is due to strong final-state effects induced by hot partonic matter
Enlist Today U. S. Marines
No full textEnlist Today U. S. Marines date: 1913-18 illustrator/author: Heyendeckei agency: U. S. Marine Corps size: 66 x 45.7 cmhttps://digicom.bpl.lib.me.us/wwII_posters_recruit/1006/thumbnail.jp
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