6,758 research outputs found
The Effects Of Rapport-Building Style on Children’s Reports of a Staged Event
Three- to 9-year-old children (N = 144) interacted with a photographer and were interviewed about the event either a week or a month later. The informativeness and accuracy of information provided following either open-ended or direct rapport building were compared. Children in the open-ended rapport-building condition provided more accurate reports than children in the direct rapport-building condition after both short and long delays. Open-ended rapport-building led the 3- to 4-year-olds to report more errors in response to the first recall question about the event, but they went on to provide more accurate reports in the rest of the interview than counterparts in the direct rapport-building condition. These results suggest that forensic interviewers should attempt to establish rapport with children using an open-ended style
Continuous monitoring of the lunar or Martian subsurface using on-board pattern recognition and neural processing of Rover geophysical data
The ultimate goal is to create an extraterrestrial unmanned system for subsurface mapping and exploration. Neural networks are to be used to recognize anomalies in the profiles that correspond to potentially exploitable subsurface features. The ground penetrating radar (GPR) techniques are likewise identical. Hence, the preliminary research focus on GPR systems will be directly applicable to seismic systems once such systems can be designed for continuous operation. The original GPR profile may be very complex due to electrical behavior of the background, targets, and antennas, much as the seismic record is made complex by multiple reflections, ghosting, and ringing. Because the format of the GPR data is similar to the format of seismic data, seismic processing software may be applied to GPR data to help enhance the data. A neural network may then be trained to more accurately identify anomalies from the processed record than from the original record
Origin of the anomalous long lifetime of 14C
We report the microscopic origins of the anomalously suppressed beta decay of
14C to 14N using the ab initio no-core shell model (NCSM) with the Hamiltonian
from chiral effective field theory (EFT) including three-nucleon force (3NF)
terms. The 3NF induces unexpectedly large cancellations within the p-shell
between contributions to beta decay, which reduce the traditionally large
contributions from the NN interactions by an order of magnitude, leading to the
long lifetime of 14C.Comment: 4 pages, 2 figures and 2 table
Recent progress in Hamiltonian light-front QCD
Hamiltonian light-front quantum field theory constitutes a framework for the
non-perturbative solution of invariant masses and correlated parton amplitudes
of self-bound systems. By choosing light-front gauge and adopting a basis
function representation, we obtain a large, sparse, Hamiltonian matrix for mass
eigenstates of gauge theories that is solvable by adapting the ab initio
no-core methods of nuclear many-body theory. Full covariance is recovered in
the continuum limit, the infinite matrix limit. We outline our approach and
discuss the computational challenges.Comment: Invited paper at Light Cone 2008, Mulhouse, Franc
Central Nervous System Parasitosis and Neuroinflammation Ameliorated by Systemic IL-10 Administration in Trypanosoma brucei-Infected Mice
Peer reviewedPublisher PD
«Prozessintelligenz» : Gegenstand und Ziele der Studie
«Intelligente Prozesse, «intelligentes Prozessmanagement», «iBPM» sind Schlagworte, die in erster Linie eingesetzt werden, um Technologien zu vermarkten. Die Begriffe lassen viel Raum für Interpretation und Assoziationen. Können Unternehmen den Hype ignorieren oder bietet «Prozessintelligenz» die Chance, das Prozessmanagement aus einem anderen Blickwinkel zu betrachten und weiterzuentwickeln? Doch was ist Prozessintelligenz? Welche Lösungsansätze, Erfahrungen und Erfolgsmuster gibt es bereits in Unternehmen? Welche Methoden und Werkzeuge kommen zum Einsatz, um Prozesse «intelligenter» zu machen? Diesen Fragen hat sich die Business-Process-Management-Studie 2015 gestellt, mit der das Institut für Wirtschaftsinformatik der Zürcher Hochschule für Angewandte Wissenschaften School of Management and Law seit 2011 regelmässig Status quo und Best Practices im deutschsprachigen Raum erhebt
Spectroscopic FIR mapping of the disk and galactic wind of M82 with Herschel-PACS
[Abridged] We present maps of the main cooling lines of the neutral atomic
gas ([OI] at 63 and 145 micron and [CII] at 158 micron) and in the [OIII] 88
micron line of the starburst galaxy M82, carried out with the PACS spectrometer
on board the Herschel satellite. By applying PDR modeling we derive maps of the
main ISM physical parameters, including the [CII] optical depth, at
unprecedented spatial resolution (~300 pc). We can clearly kinematically
separate the disk from the outflow in all lines. The [CII] and [OI]
distributions are consistent with PDR emission both in the disk and in the
outflow. Surprisingly, in the outflow, the atomic and the ionized gas traced by
the [OIII] line both have a deprojected velocity of ~75 km/s, very similar to
the average velocity of the outflowing cold molecular gas (~ 100 km/s) and
several times smaller than the outflowing material detected in Halpha (~ 600
km/s). This suggests that the cold molecular and neutral atomic gas and the
ionized gas traced by the [OIII] 88 micron line are dynamically coupled to each
other but decoupled from the Halpha emitting gas. We propose a scenario where
cold clouds from the disk are entrained into the outflow by the winds where
they likely evaporate, surviving as small, fairly dense cloudlets (n_H\sim
500-1000 cm^-3, G_0\sim 500- 1000, T_gas\sim300 K). We show that the UV photons
provided by the starburst are sufficient to excite the PDR shells around the
molecular cores. The mass of the neutral atomic gas in the outflow is \gtrsim
5-12x 10^7 M_sun to be compared with that of the molecular gas (3.3 x 10^8
M_sun) and of the Halpha emitting gas (5.8 x 10^6 M_sun). The mass loading
factor, (dM/dt)/SFR, of the molecular plus neutral atomic gas in the outflow is
~ 2. Energy and momentum driven outflow models can explain the data equally
well, if all the outflowing gas components are taken into account.Comment: 26 pages, 23 figures, 4 Tables, Accepted for publication in Astronomy
& Astrophysic
[The Impact of Nuclear Star Formation on Gas Inflow to AGN
Our adaptive optics observations of nearby AGN at spatial resolutions as
small as 0.085arcsec show strong evidence for recent, but no longer active,
nuclear star formation. We begin by describing observations that highlight two
contrasting methods by which gas can flow into the central tens of parsecs. Gas
accumulation in this region will inevitably lead to a starburst, and we discuss
the evidence for such events. We then turn to the impact of stellar evolution
on the further inflow of gas by combining a phenomenological approach with
analytical modelling and hydrodynamic simulations. These complementary
perspectives paint a picture in which all the processes are ultimately
regulated by the mass accretion rate into the central hundred parsecs, and the
ensuing starburst that occurs there. The resulting supernovae delay accretion
by generating a starburst wind, which leaves behind a clumpy interstellar
medium. This provides an ideal environment for slower stellar outflows to
accrete inwards and form a dense turbulent disk on scales of a few parsecs.
Such a scenario may resolve the discrepancy between the larger scale structure
seen with adaptive optics and the small scale structure seen with VLTI.Comment: to appear in: Co-Evolution of Central Black Holes and Galaxies; 7
page
High-J CO SLEDs in nearby infrared bright galaxies observed by Herschel-PACS
We report the detection of far-infrared (FIR) CO rotational emission from
nearby active galactic nuclei (AGN) and starburst galaxies, as well as several
merging systems and Ultra-Luminous Infrared Galaxies (ULIRGs). Using
Herschel-PACS, we have detected transitions in the J = 14 - 20 range
( 130 - 185 m, 1612 - 2300 GHz) with upper limits
on (and in two cases, detections of) CO line fluxes up to J = 30. The
PACS CO data obtained here provide the first well-sampled FIR extragalactic CO
SLEDs for this range, and will be an essential reference for future high
redshift studies. We find a large range in the overall SLED shape, even amongst
galaxies of similar type, demonstrating the uncertainties in relying solely on
high-J CO diagnostics to characterize the excitation source of a galaxy.
Combining our data with low-J line intensities taken from the literature, we
present a CO ratio-ratio diagram and discuss its potential diagnostic value in
distinguishing excitation sources and physical properties of the molecular gas.
The position of a galaxy on such a diagram is less a signature of its
excitation mechanism, than an indicator of the presence (or absence) of warm,
dense molecular gas. We then quantitatively analyze the CO emission from a
subset of the detected sources with Large Velocity Gradient (LVG) radiative
transfer models to fit the CO SLEDs. Using both single-component and
two-component LVG models to fit the kinetic temperature, velocity gradient,
number density and column density of the gas, we derive the molecular gas mass
and the corresponding CO-to-H conversion factor, , for each
respective source. For the ULIRGs we find values in the canonical
range 0.4 - 5 M/(K kmspc), while for the other objects,
varies between 0.2 and 14.} Finally, we compare our best-fit LVG model
..Comment: 39 pages, 3 figures; Accepted to Ap
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