Boise State University

About: Boise State University is a education organization based out in Boise, Idaho, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 3698 authors who have published 8664 publications receiving 210163 citations. The organization is also known as: BSU & Boise State.

Reorganizing Organizational Politics Research: A Review of the Literature and Identification of Future Research Directions

Abstract: Organizational politics has been an oft-studied phenomenon for nearly four decades. Prior reviews have described research in this stream as aligning with one of three categories: perceptions of org...

Research Priorities in Educational Technology: A Delphi Study

Abstract: This article reports on the findings of a Delphi study conducted to determine research needs in educational technology over the next five years. The Delphi panel consisted of 30 educational technology experts from throughout the United States who participated in a three-round consensus building process via the Internet. The results of this e-research study provide a framework of eight research priority areas and specific research topics for those engaged in educational technology. (Keywords: research priorities, learning, teachers, models, strategies.)

Magnetic properties of ferrihydrite nanoparticles doped with Ni, Mo, and Ir

Abstract: In this work, changes in the magnetic properties of ferrihydrite (FHYD) nanoparticles (formula $\mathrm{FeOOH}\ensuremath{\cdot}n{\mathrm{H}}_{2}\mathrm{O};$ $\mathrm{size}\ensuremath{\simeq}5\mathrm{nm})$ on doping with 5 at. % each of Ni, Mo, and Ir by coprecipitation are reported. The variations of magnetization M as a function of magnetic field H (up to \ifmmode\pm\else\textpm\fi{}50 kOe) and temperature T (5--375 K) were investigated for the four samples, viz., FHYD, Ni/FHYD, Mo/FHYD, and Ir/FHYD, both for the zero-field-cooled (ZFC) and field-cooled (FC) conditions. The T variation of the low-field $(H=100\mathrm{Oe})$ magnetic susceptibility \ensuremath{\chi} (ZFC) peaks at temperature ${T}_{p}\ensuremath{\simeq}70,$ 47, 43, and 34 K for FHYD, Ni/FHYD, Mo/FHYD, and Ir/FHYD, respectively. For $Tl{T}_{p},$ \ensuremath{\chi} $(\mathrm{ZFC})l\ensuremath{\chi}$ (FC), and \ensuremath{\chi} (FC) shows broad minima at ${T}_{s}=30,$ 27, 22, and 16 K for FHYD, Ni/FHYD, Mo/FHYD, and Ir/FHYD, respectively. The data are analyzed in terms of the modified Langevin function ${M=M}_{0}\mathcal{L}({\ensuremath{\mu}}_{p}H/kT)+{\ensuremath{\chi}}_{a}H,$ where ${\ensuremath{\mu}}_{p}$ is the magnetic moment/particle and k is the Boltzmann constant. From the analysis of the data, temperature-independent ${\ensuremath{\mu}}_{p}=369,$ 375, 237, and $239{\ensuremath{\mu}}_{B}$ are determined for FHYD, Ni/FHYD, Mo/FHYD, and Ir/FHYD, respectively. It is argued that the decrease in ${T}_{p}$ and ${T}_{s}$ noted above with doping results from shape anisotropy due to demagnetization fields. For $Tl~{T}_{s},$ the presence of exchange anisotropy may indicate spin-glass-like ordering of the surface spins. In this temperature regime, a steplike magnetization reversal behavior is observed in the low-field region of the hysteresis loops, in qualitative agreement with the theoretical predictions by Fraerman et al. [Phys. Rev. B 65, 184433 (2002)] for magnetic nanoparticles with interparticle interaction. Finally, from the observed magnitude of ${\ensuremath{\mu}}_{p},$ it is inferred that Ni substitutes for Fe throughout the nanoparticle, whereas doping with Mo and Ir occurs primarily at the surface.

Detection, localization, and tracking of unauthorized UAS and Jammers

Abstract: Small unmanned aircraft systems (UASs) are expected to take major roles in future smart cities, for example, by delivering goods and merchandise, potentially serving as mobile hot spots for broadband wireless access, and maintaining surveillance and security. Although they can be used for the betterment of the society, they can also be used by malicious entities to conduct physical and cyber attacks to infrastructure, private/public property, and people. Even for legitimate use-cases of small UASs, air traffic management (ATM) for UASs becomes of critical importance for maintaining safe and collusion-free operation. Therefore, various ways to detect, track, and interdict potentially unauthorized drones carries critical importance for surveillance and ATM applications. In this paper, we will review techniques that rely on ambient radio frequency signals (emitted from UASs), radars, acoustic sensors, and computer vision techniques for detection of malicious UASs. We will present some early experimental and simulation results on radar-based range estimation of UASs, and receding horizon tracking of UASs. Subsequently, we will overview common techniques that are considered for interdiction of UASs.

An Evaluation of the Ecohydrological Separation Hypothesis in a Semiarid Catchment

Abstract: The ecohydrological separation hypothesis states that transpiration through plants and drainage to streams and groundwater are sourced from separate soil water pools, which possess distinct isotopic signatures Evidence for ecohydrological separation has relied on the globally ubiquitous observation that plant water and draining water are isotopically distinct We evaluated the ecohydrological separation hypothesis in the Dry Creek Experimental Watershed in the semiarid, snow-dominated landscape of southwest Idaho, USA We found that plant water is indeed isotopically distinct from streams and groundwater However, we were unable to track those waters to subsurface soil waters, nor were we able to relate soil water mobility to isotopic composition Soil waters of different mobility can be isotopically similar, and isotopic distinction in soil water can occur for reasons not related to mobility We suggest that isotopic distinction between root-absorbed and draining waters may not be an appropriate indicator of ecohydrological separation of soil waters, and that hydrologic explanations for such isotopic distinction may not be sufficient