ATTRACTION AND MOTIVATION IN POLICE RECRUITMENT: A COMPLEX SYSTEMS THEORY FRAMEWORK

Year after year, police agencies across the nation continue to see a drop in the number of applicants applying to work in the police profession. Recruitment practices that once worked are no longer attracting applicants to the profession charged with providing security to members of their communities. This research examines the police recruitment process regarding applicant attraction and generational motivation and how recruiters can update police recruitment models. This thesis synthesizes the predictors of applicant attraction and motivation factors, called recruitment predictors, as the foundation of any police recruitment practices. The research also indicates there are no recruitment process models available that provide police organizations with guidance on influence, evaluation, and correction during the recruitment process. This thesis provides this guidance by building a conceptual systems theory framework for the recruitment process. This framework synthesizes recruitment process research into an all-encompassing process model. With these factors changing over time, this framework, the recruitment predictors, and practices utilizing recruitment predictors can be reviewed, analyzed, and corrected by police organizations to allow the best opportunity to attract and maintain applicants throughout the recruitment process.Civilian, Amarillo Police DepartmentApproved for public release. Distribution is unlimited

Designed binary mixtures for subcritical organic Rankine cycles based on multiobjective optimization

The use of binary zeotropic mixtures as working fluids applied to Organic Rankine Cycles (ORCs) is investigated in this paper. In total, six (6) hydrocarbons and (2) hydrofluorocarbons are considered, leading to twenty-eight (28) possible binary combinations. The mixtures were tested with a basic Rankine cycle while using the heat source temperature as independent variable, which assumed six different values, ranging from 80 °C to 180 °C, in steps of 20 °C. The simulations aimed to identify the ideal mixtures that maximized the net power and exergetic efficiency, and minimized the heat exchanger’s global conductance for a given temperature of the heat source. The optimization process relied on a genetic algorithm and the selection of the best mixtures, on a non-dominated sorting method (NDS), which returned Pareto fronts gathering the best solutions. While no one specific ideal mixture was identified, the results showed that the range of the so-called ideal mixtures narrows as the heat source temperature increases, with mixtures including fluids like R245fa and pentane being good options, whereas at low temperature, a larger number of fluid mixtures perform well. Finally, a scale analysis is proposed and shows that the maximal net power varies linearly with a Number of Transfer Units (NTU) factor while its slope depends on the heat source temperature. The latter analysis is compared with the results obtained with the Pareto front and NDS, showing that both sets of results agree well while correlated by a single constant for the entire temperature range covered in the present study

Delineation of Gambel\u27s Quail Habitat in the Trans-Pecos, Texas

Gambel’s quail (Callipepla gambelii) are a common quail species in southwestern states of the United States and the northwestern states of Mexico. In Texas this species occurs in the Trans-Pecos region, are underutilized, and could become an important game bird and source of income for ranchers in the Chihuahuan Desert region of Texas. Salt cedar (Tamarisk spp.), introduced from Asia for ornamental and erosion purposes, is invasive in the western part of the Rio Grande corridor that generally creates monocultures that choke out the native vegetation of the region. Knowing this, the objectives of this study were to: (1) delineate salt cedar and native riparian habitats along the Rio Grande corridor in the Trans-Pecos; (2) evaluate those habitats based on the known distribution of Gambel’s quail in the Trans-Pecos; and (3) estimate the amount of suitable habitat for Gambel’s quail in Trans-Pecos, Texas. Although dominant along the Rio Grande, native riparian vegetation was more prevalent than salt cedar communities when combining primary creeks in all counties. Brewster County was the area with a higher percentage of salt cedar occurrence (21.2%) vs. native riparian vegetation (78.8%). The largest extension of salt cedar occurred in Presidio County with an extension of 6,656.3 ha but this only represented 12.7% of our analyzed area. Hudspeth County had an occurrence of salt cedar of 2,905.2 ha representing 6.8% of the estimated riparian area of the Rio Grande corridor in this county. El Paso County’s total urban area-agricultural fields area is a total of 90,682.9184 ha

Seroprevalencia de anticuerpos para SARS-COV2, cuantificado por el método de Quimioluminiscencia en pacientes atendidos en la Clínica Ssosma de Nuevo Chimbote, 2021

La presente investigación pretende determinar la seroprevalencia de anticuerpos SARS- CoV- 2; además este método de Quimioluminiscencia actualmente posee una sensibilidad del 98.11% y una especificidad del 99.22% lo que la convierte en una prueba eficaz, sin embargo, cabe recalcar que este método de quimioluminiscencia es una ayuda al diagnóstico del SARS-CoV-2, que de la misma forma tiene su tiempo de uso que es entre el séptimo día después de haber iniciado los síntomas. Por lo tanto, planteamos el objetivo de \"Determinar la seroprevalencia de anticuerpos SARS-CoV-2, cuantificado por el método de quimioluminiscencia en pacientes atendidos en la Clínica Ssosma de nuevo Chimbote, 2021\". La población estará constituida por todos los pacientes atendidos en la clínica Ssosma durante el 2021. Esta investigación es de tipo descriptivo, cuantitativo, transversal y retrospectivo. La técnica es documental porque se recolectarán los datos de la oficina de estadística. Se incluirán a los pacientes que tenga como resultado reactivo a anticuerpo IgM, IgG y IgM- IgG. Se utilizará como instrumento una ficha de recolección de datos. En conclusión la seroprevalencia de anticuerpos SARS-CoV-2 en los pacientes atendidos en la clínica SSOSMA fue del 87.6%.Tesi

A multiparameter panel method for outcome prediction following aneurysmal subarachnoid hemorrhage

Purpose: Accurate early anticipation of long-term irreversible brain damage during the acute phase of patients with aneurysmal subarachnoid hemorrhage (aSAH) remains difficult. Using a combination of clinical scores together with brain injury-related biomarkers (H-FABP, NDKA, UFD1 and S100β), this study aimed at developing a multiparameter prognostic panel to facilitate early outcome prediction following aSAH. Methods: Blood samples of 141 aSAH patients from two separated cohorts (sets of 28 and 113 patients) were prospectively enrolled and analyzed with 14months of delay. Patients were admitted within 48h following aSAH onset. A venous blood sample was withdrawn within 12h after admission. H-FABP, NDKA, UFD1, S100β and troponin I levels were determined using classical immunoassays. The World Federation of Neurological Surgeons (WFNS) at admission and the Glasgow Outcome Score (GOS) at 6months were evaluated. Results: In the two cohorts, blood concentration of H-FABP, S100β and troponin I at admission significantly predicted unfavorable outcome (GOS 1-2-3). A multivariate analysis identified a six-parameter panel, including WFNS, H-FABP, S100β, troponin I, NDKA and UFD-1; when at least three of these parameters were simultaneously above cutoff values, prediction of unfavorable outcome reached around 70% sensitivity in both cohorts for 100% specificity. Conclusion: The use of this panel, including four brain injury-related proteins, one cardiac marker and a clinical score, could be a valuable tool to identify aSAH patients at risk of poor outcom

Heat Conduction in the Vortex State of NbSe_2: Evidence for Multi-Band Superconductivity

The thermal conductivity kappa of the layered s-wave superconductor NbSe_2 was measured down to T_c/100 throughout the vortex state. With increasing field, we identify two regimes: one with localized states at fields very near H_c1 and one with highly delocalized quasiparticle excitations at higher fields. The two associated length scales are naturally explained as multi-band superconductivity, with distinct small and large superconducting gaps on different sheets of the Fermi surface. This behavior is compared to that of the multi-band superconductor MgB_2 and the conventional superconductor V_3Si.Comment: 5 pages, 4 figure

Quasiparticle transport in the vortex state of YBa_2Cu_3O_6.9

The effect of vortices on quasiparticle transport in cuprate superconductors was investigated by measuring the low temperature thermal conductivity of YBa_2Cu_3O_6.9 in magnetic fields up to 8 T. The residual linear term (as T \to 0) is found to increase with field, directly reflecting the occupation of extended quasiparticle states. A study for different Zn impurity concentrations reveals a good agreement with recent calculations for a d-wave superconductor, thereby shedding light on the nature of scattering by both impurities and vortices. It also provides a quantitative measure of the gap near the nodes.Comment: 4 pages, 2 included eps figures, significant new analysis wrt other experiments, to appear in Phys Rev Lett 29 March 199