75,314 research outputs found
Supporting experimental data for "Z-average and Polydispersity Index of Dynamic Light Scattering" by Bazzoni et al.
No full textData (auto-correlation functions used for preparing Figure 5-8) accompanying manuscript "Z-average and Polydispersity Index of Dynamic Light Scattering" by Bazzoni et al.
1. “Figure 5_ACFs.zip” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate heteroscedastic and angle-dependent uncertainties. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 5 is based on the analyses of subsets of this data set.
2. “Figure 6 & 7_ACFs.zip” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate the impact of uncertainty on precision, and the impact of duration and photon counting rate on the signal-to noise ratio. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 6 and 7 are based on the analyses of subsets of this data set.
3. “Figure 8_ACFs.zip” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate the positive impact of data averaging on precisions. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 8 is based on the analyses of subsets of this data set
The evidence problem of late report of sexual abuse
No full textPreiskovalci spolnih zlorab se med samo preiskavo srečujejo s številnimi problemi. Najpogostejši problem je zbiranje dokazov, saj večina žrtev spolne zlorabe ne prijavi takoj po dejanju. Pri tem nastane problem, da se večina dokazov, ki bi jih preiskovalci dobili na telesu, predmetih žrtve ali storilca in na samem kraju dejanja, že uniči. Naslednji problem, s katerim se srečujejo preiskovalci, je ta, da osumljenec priznava spolni odnos, vendar trdi, da do njega ni prišlo proti volji žrtve.
V diplomskem delu se osredotočimo na posilstvo in spolno nasilje, ki ju opišemo v prvem delu naloge. Predstavimo predloge sprememb inkriminacije posilstva in spolnega nasilja po modelu soglasja ter nesoglasja. Srečamo se tudi z razlogi, zakaj spolnega nasilja žrtve ne prijavijo takoj po dejanju, z vplivom sekundarne viktimizacije in kakšni so tipi storilcev kaznivih dejanj spolnega nasilja ter posilstva. V osrednjem delu diplomske naloge se osredotočimo na preiskovanje posilstva in spolnega nasilja, kjer opisujemo prijavo spolne zlorabe, razgovor z žrtvijo ter zbiranje dokazov, katere še podrobneje opišemo. Opisujemo tudi informativni razgovor z osumljencem kaznivega dejanja spolnega nasilja in posilstva ter kakšne so metode za izsleditev domnevnega storilca, v kolikor ta ni znan. V nadaljevanju smo predstavili preiskovanje pozne prijave spolne zlorabe, kjer ni več možno pridobiti materialnih dokazov. Pri tem ima ključno vlogo razgovor z žrtvijo, ki ga podrobneje opišemo. Opišemo tudi razloge, zakaj do prijave prihaja pozno in ne takoj po spolni zlorabi in predstavimo tudi primere, kjer je bila kljub pozni prijavi podana pravnomočna obtožnica proti storilcem.Sexual abuse investigators face many problems during the investigation process. The most common problem is gathering of evidence, since many victims do not report sexual abuse immediately after the fact. This results in a problem – most of the evidence that the investigators could gather from the victim’s or perpetrator’s body or items and from the crime scene had already been destroyed. Another problem investigators face is that the suspect admits to having sexual intercourse, but claims that it had been mutually consensual.
The present diploma thesis focuses on rape and sexual violence. Both acts are described in the first part of the thesis. Presented are suggested amendments to criminalisation of rape and sexual violence based on consent or lack thereof. Also discussed are the reasons why sexual abuse victims do not report the crime immediately after the fact, the influence of secondary victimisation and the various types of perpetrators of sexual violence and rape. The central part of the thesis discusses rape and sexual violence investigationdetailed are the sexual abuse reporting process, victim interview, and gathering of evidence (in detail). Also described are the initial questioning of the suspect of the criminal offence of sexual violence and rape, as well as methods for tracking down the alleged perpetrator, if their identity is unknown. Furthermore, we present the process of investigating a late sexual abuse report, a situation in which material evidence can no longer be gathered. Described in detail is also the victim interview, a crucial step such cases. The thesis further details the reasons for late reports, as opposed to reports immediately after the act of sexual abuse and finally, the thesis presents cases in which the court’s final decision against the perpetrator has been made despite the late report
The Benefits of Being Economics Professor A (and not Z)
No full textAlphabetic name ordering on multi-authored academic papers, which is the convention in the economics discipline and various other disciplines, is to the advantage of people whose last name initials are placed early in the alphabet. As it turns out, Professor A, who has been a first author more often than Professor Z, will have published more articles and experienced afaster growth rate over the course of her career as a result of reputation and visibility. Moreover, authors know that name ordering matters and indeed take ordering seriously: Several characteristics of an author group composition determine the decision to deviate from the default alphabetic name order to a significant extent.performance measurement, incentives, economists, name ordering
Final word on Jersey Dutch
No full textIn this article, William Z. Shetter compares and contrasts the dialects that developed between different Dutch colonies in the New World. He explores in-depth the nuances of Jersey Dutch, and provides theories to explain how Dutch and colonial languages blended. The article is reprinted from American Speech, December 1958, Volum XXXIII, No. 4
Hourly forecast of solar radiation up to 48h with two runs of weather research forecast model over Italy
No full textGrowth and vast usage in renewable energy implies better hourly and daily planning for reliable and constant renewable energy distribution. In this sense, the forecast of renewable energy becomes more and more important. In this work, we used the Weather Research and Forecasting Model (WRF) to forecast solar radiation. We run two forecast simulations with WRF and WRF-Solar model. Models have been running on daily basis to forecast solar radiation up to 48h with hourly outputs. In this paper we elaborated one summer month of 2017 with both model forecasts compared with ground measured data for solar irradiance at one location in Italy (lat 42°02.5' North; lon 12°18.4' East). Both models represents in good manner global irradiance with RMSE for a selected maximum of a daily range of about 13% while direct (25%) and diffuse (40%) solar radiation obtained by models differ from measured values
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Statistics of the subgrid scales after the shock-turbulence interaction
No full textThe interaction of a normal shock with isotropic turbulence (IT) represents a basic problem for studying some of the phenomena associated with high speed flows, such as hypersonic flight, supersonic combustion and Inertial Confinement Fusion (ICF). In general, in practical applications, the shock width is much smaller than the turbulence scales and the upstream turbulent Mach number is modest. In this case, recent high resolution shock-resolved Direct Numerical Simulations (DNS) (Ryu and Livescu, J. Fluid Mech., 756, R1, 2014) show that the interaction can be described by the Linear Interaction Approximation (LIA). By using LIA to alleviate the need to solve the shock, DNS post-shock data can be generated at much higher Reynolds numbers than previously possible. Here, such results with Taylor Reynolds number around are used to investigate the properties of the subgrid scales (SGS). In particular, it is shown that the shock interaction decreases the asymmetry of the SGS dissipation PDF as the shock Mach number increases, with a significant enhancement in size of the regions and magnitude of backscatter
Transition to turbulence in a qblique shock-wave/boundary-layer interaction at M=15
No full textDirect numerical simulations are carried out for different forcing techniques to trigger transition during the interaction between an oblique shock-wave and a laminar boundary-layer at M = 1.5. Three forcing methods are used: a) forcing of oblique unstable modes, whose shape and behaviour are determined by the local linear stability theory, b) broadband free-stream acoustic disturbances, and c) a cold plasma flow control device. While the oblique-mode breakdown is dominant for low-amplitude forcing, long streaky structures drive the transition process in a high-amplitude disturbance environment. LES are also performed on the experimental setup by the Institute of Theoretical and Applied Mechanics (ITAM) from Novosibirsk State University with cold plasma actuation. As well as the disturbance type, the effect of Reynolds number and forcing amplitude will be investigated
Triangular Constellations in Flows
No full textParticles advected on the surface of a fluid can exhibit fractal clustering. The local structure of a fractal set is described by its dimension , which is the exponent of a power-law relating the mass in a ball to its radius : . It is desirable to characterise the {\em shapes} of constellations of points sampling a fractal measure, as well as their masses. The simplest example is the distribution of shapes of triangles formed by triplets of points, which we investigate for fractals generated by chaotic dynamical systems. The most significant parameter describing the triangle shape is the ratio of its area to the radius of gyration squared. We show that the probability density of has a phase transition: is independent of and approximately uniform below a critical flow compressibility , which we estimate. For the distribution appears to be described by two power laws: when , and when
Preferential concentration of particles in compressible turbulence
No full textThe behavior of particles in compressible turbulence has been seldom investigated to date despite its importance in many natural and industrial flows. Direct numerical simulations of particle-laden compressible isotropic turbulence are performed to study the preferential concentration of particles and the underling mechanisms. It turns out that heavy particles tend to concentrate in regions of low enstrophy and high fluid density (i.e, strain regions between vortex rings), especially the particles of Kolmogorov scale, which show the largest number density. Due to the compressibility, fluid particles do not distribute uniformly as in incompressible case, but show a tendency to bunch up in high density zones. The preliminary result might give some insights into compressible turbulent transport, dispersion and mixing as well as the subgrid-scale modeling for large-eddy simulation of particle-laden compressible flows
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