Why it is not Unreasonable for the Police to Refuse to Provide a Copy of the Search Warrant at the Outset of the Search

This article presents numerous reasons why it would not be unreasonable for the police to refuse to provide an occupant of the premises a copy of the search warrant at the outset of the search when an occupant of the premises is present and poses no threat to the officers’ safe and effective performance of their mission. First, neither the plain text of the Fourth Amendment nor the plain text of Federal Rule 41 requires it. Second, there are numerous constitutional and statutory protections that ensure the executing official does not wrongfully execute the warrant. In essence, requiring the police to provide a copy of the search warrant prior to conducting the search would contradict many of the Fourth Amendment’s purposes. As the Supreme Court recognized, the Fourth Amendment does not give individuals “license to engage the police in a debate over the basis for the warrant.” Our nation has a judicial system and judicial actors – such as judges, prosecutors, and defense attorneys – that address the actions of an overreaching government. Allowing ordinary citizens to substitute themselves for these judicial actors is not only irresponsible but completely contradictory to the ideals and requirements of our Constitution

Investigating the accuracy of parallel analysis in underextraction conditions: A monte carlo study

One of the most important decisions to make when performing an exploratory factor analysis regards the number of factors to retain. Parallel analysis is considered to be the best course of action in these circumstances as it consistently outperforms other factor extraction methods (Zwick & Velicer, 1986). Even so, parallel analysis requires further research and refinement to improve its accuracy. Characteristics such as factor loadings, correlations between factors, and number of variables per factor all have been shown to adversely impact the effectiveness of parallel analysis as a means of identifying the number of factors. Critically, even the choice of criteria on which to evaluate factors such as the eigenvalue at the 50th or 95th percentile can have deleterious effects on the number of factors extracted. One area of parallel analysis yet to be researched is the magnitude of the difference between the actual eigenvalue and the random data-based eigenvalue. Currently, even if the margin between the actual eigenvalue and the random data-based eigenvalue is nominal, the factor is considered to be meaningful. As such, it may behoove researchers to enforce a higher standard, such as a greater margin between the two eigenvalues than just an absolute difference. Accordingly, the purpose of this study will be to evaluate the efficacy of a 10 percent margin criterion as compared to an absolute margin. These margins will specifically be evaluated in conjunction with the 50th, 90th, 95th, and 99th percentile eigenvalue criteria on a population correlation matrix which engenders underextraction. Previous research (Matsumoto & Brown, 2017) explored the same conditions on a population correlation matrix designed to cause overextraction. They found that the most stringent standard (99th percentile eigenvalue plus 10 percent margin) was the most accurate. For the present study however, we hypothesize that the most accurate results will be obtained from a standard less stringent than the 99th percentile eigenvalue plus 10 percent margin. This research has important implications for the scientific and practical application of psychometrics

Structure determination of PF3 adsorption on Cu(100) using X-ray standing waves

The local structure of the Cu(100)c(4x2)-PF3 adsorption phase has been investigated through the use of normal-incidence X-ray standing waves (NIXSW), monitored by P 1s and F 1s photoemission, together with P K-edge near-edge X-ray absorption fine structure (NEXAFS). NEXAFS shows the molecule to be oriented with its C3v symmetry axis essentially perpendicular to the surface, while the P NIXSW data show the molecule to be adsorbed in atop sites 2.37±0.04 Å above the surface, this distance corresponding to the Cu-P nearest-neighbour distance in the absence of any surface relaxation. F NIXSW indicates a surprisingly small height difference of the P and F atoms above the surface 0.44±0.06 Å, compared with the value expected for an undistorted gas-phase geometry of 0.77 Å, implying significant increases in the F-P-F bond angles. In addition, however, the F NIXSW data indicate that the molecules have a well-defined azimuthal orientation with a molecular mirror plane aligned in a substrate mirror plane, and with a small (5-10°) tilt of the molecule in this plane such that the two symmetrically-equivalent F atoms in each molecule are tilted down towards the surface

Consistency is key: Intercollegiate athlete perceptions of the justice of team disciplinary decisions

Discipline and, how it is perceived, is of great consequence to organizations. Importantly, how disciplinary decisions are determined and carried out can influence the attitudes, behavior, and emotions of organizational members both positively and negatively (Ball, Trevino, & Sims, 1992). Although there is a dearth of research investigating the perceptions of those receiving punishment, it is equally important to understand the perceptions of those observing the disciplinary process. The purpose of this study was to investigate perceptions of justice involving disciplinary decisions in an intercollegiate team sport setting. Male and female intercollegiate athletes (N = 204) provided open ended responses regarding a punishment scenario on their athletic team and their perceptions of distributive fairness to the punished athlete and teammates, perceptions of procedural fairness to the punished athlete and teammates, perceptions of justice to the fans, and whether the punishment was likely to deter future misconduct by the punished athlete and teammates. Results indicated that punishment that was in accordance with team rules was perceived as more fair to both the punished athlete and the team. The findings of this study are of importance to sports teams specifically and organizations generally in that they lay the groundwork for creating disciplinary processes which are perceived as fair in terms of their procedure and distribution

Fiber depolymerization

Depolymerization is, by definition, a crucial process in the reversible assembly of various biopolymers. It may also be an important factor in the pathology of sickle cell disease. If sickle hemoglobin fibers fail to depolymerize fully during passage through the lungs then they will reintroduce aggregates into the systemic circulation and eliminate or shorten the protective delay (nucleation) time for the subsequent growth of fibers. We study how depolymerization depends on the rates of end- and side-depolymerization, kend and kside, which are, respectively, the rates at which fiber length is lost at each end and the rate at which new breaks appear per unit fiber length. We present both an analytic mean field theory and supporting simulations showing that the characteristic fiber depolymerization time View the MathML source depends on both rates, but not on the fiber length L, in a large intermediate regime 1 much less-than ksideL2/kend much less-than (L/d)2, with d the fiber diameter. We present new experimental data which confirms that both mechanisms are important and shows how the rate of side depolymerization depends strongly on the concentration of CO, acting as a proxy for oxygen. Our theory remains rather general and could be applied to the depolymerization of an entire class of linear aggregates, not just sickle hemoglobin fibers

On the Potential of the Excluded Volume and Auto-Correlation as Neuromorphometric Descriptors

This work investigates at what degree two neuromorphometric measurements, namely the autocorrelation and the excluded volume of a neuronal cell can influence the characterization and classification of such a type of cells. While the autocorrelation function presents good potential for quantifying the dendrite-dendrite connectivity of cells in mosaic tilings, the excluded volume, i.e. the amount of the surround space which is geometrically not accessible to an axon or dendrite, provides a complementary characterization of the cell connectivity. The potential of such approaches is illustrated with respect to real neuronal cells.Comment: 15 pages, 6 figure

Nonmesonic weak decay spectra of Λ4^4_\LambdaHe

To comprehend the recent Brookhaven National Laboratory experiment E788 on $^4_\Lambda$He, we have outlined a simple theoretical framework, based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange-potential. In spite of the straightforwardness of the approach a good agreement with data is acheived. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the $\pi+K$ exchange potential with soft vertex-form-factor cutoffs $(\Lambda_\pi \approx 0.7$ GeV, $\Lambda_K \approx 0.9$ GeV), is able to account simultaneously for the available experimental data related to $\Gamma_p$ and $\Gamma_n$ for $^4_\Lambda$H, $^4_\Lambda$He, and $^5_\Lambda$He.Comment: 12 pages, 4 figures, 1 table, submitted for publication; v2: major revision, 18 pages, one author added, table, figures and bibliography change

Glioma Grading Using Structural Magnetic Resonance Imaging and Molecular Data

A glioma grading method using conventional structural magnetic resonance image (MRI) and molecular data from patients is proposed. The noninvasive grading of glioma tumors is obtained using multiple radiomic texture features including dynamic texture analysis, multifractal detrended fluctuation analysis, and multiresolution fractal Brownian motion in structural MRI. The proposed method is evaluated using two multicenter MRI datasets: (1) the brain tumor segmentation (BRATS-2017) challenge for high-grade versus low-grade (LG) and (2) the cancer imaging archive (TCIA) repository for glioblastoma (GBM) versus LG glioma grading. The grading performance using MRI is compared with that of digital pathology (DP) images in the cancer genome atlas (TCGA) data repository. The results show that the mean area under the receiver operating characteristic curve (AUC) is 0.88 for the BRATS dataset. The classification of tumor grades using MRI and DP images in TCIA/TCGA yields mean AUC of 0.90 and 0.93, respectively. This work further proposes and compares tumor grading performance using molecular alterations (IDH1/2 mutations) along with MRI and DP data, following the most recent World Health Organization grading criteria, respectively. The overall grading performance demonstrates the efficacy of the proposed noninvasive glioma grading approach using structural MRI

Geometric Phase: a Diagnostic Tool for Entanglement

Using a kinematic approach we show that the non-adiabatic, non-cyclic, geometric phase corresponding to the radiation emitted by a three level cascade system provides a sensitive diagnostic tool for determining the entanglement properties of the two modes of radiation. The nonunitary, noncyclic path in the state space may be realized through the same control parameters which control the purity/mixedness and entanglement. We show analytically that the geometric phase is related to concurrence in certain region of the parameter space. We further show that the rate of change of the geometric phase reveals its resilience to fluctuations only for pure Bell type states. Lastly, the derivative of the geometric phase carries information on both purity/mixedness and entanglement/separability.Comment: 13 pages 6 figure