215 research outputs found
Effects of Expert Testimony and Interrogation Tactics on Perceptions of Confessions
Evidence obtained through the process of interrogation is frequently undermined by what can be perceived as overzealous interrogation tactics. Although the majority of psychologically oriented tactics are legally permissible, they nonetheless contribute to innocent suspects confessing to crimes they did not commit. The present study examined the effect of expert testimony and interrogation tactics on perceptions of a confession. 182 undergraduates read a transcript of a homicide trial that varied based on interrogation tactic: implicit threat of punishment (maximization) or leniency (minimization) and expert witness testimony (presence or absence of expert testimony). Analysis indicated that the type of interrogation tactic used in obtaining the confession affected participants\u27 perceptions of the coerciveness of the interrogation process
Reseñas
TOM MĂLLER / MATTHIAS VOLLET (eds), Die ModernitĂ€ten des Nikolaus von Kues. Debatten und Rezeptionen. NATALIA JAKUBECKI / MARCELA BORELLI. Cartas de Abelardo y EloĂsa. MICHAEL ECKHERT / HARALD SCHWAETZER (eds), Cusanus: Ăsthetik und Theologie. AELREDI RIEVALLENSIS, Sermones LXXXV-CLXXXII, ed. GAETANO RACITI. GREGORIO PIAIA, Huellas de los filĂłsofos. La comprensiĂłn medieval de la historia de la filosofĂa, trad. V. Cricco y J. M. Machetta. P. P. OâNĂILL (ed), Psalterium Suthantoniense. CATALINA MARĂA CUBILLOS MUĂOZ, Los mĂșltiples nombres del Dios innombrable. Una aproximaciĂłn a la metafĂsica de NicolĂĄs de Cusa desde la perspectiva de los nombres divinos. RAIMUNDUS LULLOS. Arbor philosophiae. De levitate et ponderositate elementorum. Desolatio Raimundi [Opera Latina XXXIV]. CCCM 246 // RAIMUNDUS LULLOS, Ha-Melacha hs. Ketzara. A Hebrew Translation of Ramon Lullâs Ars Brevis CCCM 247, ed. HARVEY J. JAMES. IOHANNIS ALPHONSI DE SEGOVIA, Liber de substancia ecclesie, ed. JOSĂ LUIS NARVAJA SJ. FRANCISCO SUĂREZ, De pace â De bello. Ăber den Frieden â Ăber den Krieg, ed. MARKUS KREMER. OLVIER BACH / NORBERT BRIESKORN / GIDEON STIENING (eds), âAuctoritas omnium legumâ: Francisco SuĂĄrezâ De legibuszwischen Theologie, Philosophie und Jurisprudenz. JOACHIM VON FIORE, Psalterium decem cordarum, ed. KURT VICTOR SELGE. KATHRIN UTZ TREM, Von der HĂ€resie zur Hexerei. âWirklicheâ und imaginĂ€re Sekten im SpĂ€tmittelalter
In-flight thermal experiments for LISA pathfinder: simulating temperature noise at the inertial sensors
Thermal Diagnostics experiments to be carried out on board LISA Pathfinder (LPF) will yield a detailed characterisation of how temperature fluctuations affect the LTP (LISA Technology Package) instrument performance, a crucial information for future space based gravitational wave detectors as the proposed eLISA. Amongst them, the study of temperature gradient fluctuations around the test masses of the Inertial Sensors will provide as well information regarding the contribution of the Brownian noise, which is expected to limit the LTP sensitivity at frequencies close to 1 mHz during some LTP experiments. In this paper we report on how these kind of Thermal Diagnostics experiments were simulated in the last LPF Simulation Campaign (November, 2013) involving all the LPF Data Analysis team and using an end-to-end simulator of the whole spacecraft. Such simulation campaign was conducted under the framework of the preparation for LPF operations
The LISA pathfinder mission
ISA Pathfinder (LPF), the second of the European Space Agency's Small Missions for Advanced Research in Technology (SMART), is a dedicated technology validation mission for future spaceborne gravitational wave detectors, such as the proposed eLISA mission. LISA Pathfinder, and its scientific payload - the LISA Technology Package - will test, in flight, the critical technologies required for low frequency gravitational wave detection: it will put two test masses in a near-perfect gravitational free-fall and control and measure their motion with unprecedented accuracy. This is achieved through technology comprising inertial sensors, high precision laser metrology, drag-free control and an ultra-precise micro-Newton propulsion system. LISA Pathfinder is due to be launched in mid-2015, with first results on the performance of the system being available 6 months thereafter.
The paper introduces the LISA Pathfinder mission, followed by an explanation of the physical principles of measurement concept and associated hardware. We then provide a detailed discussion of the LISA Technology Package, including both the inertial sensor and interferometric readout. As we approach the launch of the LISA Pathfinder, the focus of the development is shifting towards the science operations and data analysis - this is described in the final section of the paper
Free-flight experiments in LISA Pathfinder
The LISA Pathfinder mission will demonstrate the technology of drag-free test
masses for use as inertial references in future space-based gravitational wave
detectors. To accomplish this, the Pathfinder spacecraft will perform drag-free
flight about a test mass while measuring the acceleration of this primary test
mass relative to a second reference test mass. Because the reference test mass
is contained within the same spacecraft, it is necessary to apply forces on it
to maintain its position and attitude relative to the spacecraft. These forces
are a potential source of acceleration noise in the LISA Pathfinder system that
are not present in the full LISA configuration. While LISA Pathfinder has been
designed to meet it's primary mission requirements in the presence of this
noise, recent estimates suggest that the on-orbit performance may be limited by
this `suspension noise'. The drift-mode or free-flight experiments provide an
opportunity to mitigate this noise source and further characterize the
underlying disturbances that are of interest to the designers of LISA-like
instruments. This article provides a high-level overview of these experiments
and the methods under development to analyze the resulting data.Comment: 13 pages, 5 figures. Accepted to Journal Of Physics, Conference
Series. Presented at 10th International LISA Symposium, May 2014,
Gainesville, FL, US
A strategy to characterize the LISA-Pathfinder cold gas thruster system
The cold gas micro-propulsion system that will be used during the LISA-Pathfinder mission will be one of the most important component used to ensure the "free-fall" of the enclosed test masses. In this paper we present a possible strategy to characterize the effective direction and amplitude gain of each of the 6 thrusters of this system
Beyond the required LISA free-fall performance: new LISA pathfinder results down to 20ââÎŒHz
In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20ââÎŒHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.05)ââfmâs^{-2}/sqrt[Hz] above 2 mHz and (6±1)Ă10ââfmâs^{-2}/sqrt[Hz] at 20ââÎŒHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency
Disentangling the magnetic force noise contribution in LISA pathfinder
Magnetically-induced forces on the inertial masses on-board LISA Pathfinder are expected to be one of the dominant contributions to the mission noise budget, accounting for up to 40%. The origin of this disturbance is the coupling of the residual magnetization and susceptibility of the test masses with the environmental magnetic field. In order to fully understand this important part of the noise model, a set of coils and magnetometers are integrated as a part of the diagnostics subsystem. During operations a sequence of magnetic excitations will be applied to precisely determine the coupling of the magnetic environment to the test mass displacement using the on-board magnetometers. Since no direct measurement of the magnetic field in the test mass position will be available, an extrapolation of the magnetic measurements to the test mass position will be carried out as a part of the data analysis activities. In this paper we show the first results on the magnetic experiments during an end- to-end LISA Pathfinder simulation, and we describe the methods under development to map the magnetic field on-board
State space modelling and data analysis exercises in LISA Pathfinder
LISA Pathfinder is a mission planned by the European Space Agency to test the
key technologies that will allow the detection of gravitational waves in space.
The instrument on-board, the LISA Technology package, will undergo an
exhaustive campaign of calibrations and noise characterisation campaigns in
order to fully describe the noise model. Data analysis plays an important role
in the mission and for that reason the data analysis team has been developing a
toolbox which contains all the functionalities required during operations. In
this contribution we give an overview of recent activities, focusing on the
improvements in the modelling of the instrument and in the data analysis
campaigns performed both with real and simulated data.Comment: Plenary talk presented at the 9th International LISA Symposium, 21-25
May 2012, Pari
- âŠ