339 research outputs found
School Personnel and Leadership Collaboration Model for Ideal Work Contexts
This article describes the school personnel and leadership collaboration (SPLC) model, a shared-responsibility framework for faculty, staff, and administrators. Prior research consistently demonstrates the need for (a) administrative support for teachers and other school personnel and (b) collegial support among staff. The SPLC model represents an amalgamation of this research and, moreover, integrates personnel support for leadership. In the managerial sciences, leader–member exchange (LMX) is a well-known relationship-based leadership approach that focuses on a dyadic or two-way relationship between supervisors and their employees. Though managers are responsible for overseeing operations, personnel contribute ideas, participate in decision-making, and follow through with their responsibilities. LMX is associated with positive work experiences and job performance outcomes. In contrast, schools are often run with a top–down leadership approach that solicits little to no input from staff, leading to low morale, high attrition rates, and negative school climate. Thus, the SPLC model was inspired by LMX and emphasizes practices, such as shared decision-making, staff autonomy, and shared responsibilities. Detailed examples of ways schools may apply the SPLC model to their practices are included
Effect of oxygen surfactant on the magnetic and structural properties of Co films grown on Cu(110)
ABSTRACT It was found that atomically flat Co(110) films could be grown on Cu(110) using O as a surfactant. To obtain detailed knowledge on the effect of O on the growth, as well as on the magnetic properties of Co overlayer, we carried out an investigation on this system using Auger Electron Spectroscopy (AES), Low Energy Electron Diffraction (LEED), Surface Magneto-Optic Kerr Effect (SMOKE), and Scanning Tunneling Microscopy (STM). With O as a surfactant, the initial growth of Co (<1 ML) results in a flat monolayer structure. When the Co is thicker than 1 ML, three-dimensional clusters begin to form. These clusters become ordered islands at 3 ML Co and coalesce at ~5 ML Co. Above 5 ML Co, layer-by-layer growth resumes. No significant Cu segregation is observed. SMOKE studies at room temperature show that the Co film is magnetic above ~5 ML Co, with the magnetization easy axis along the [001] direction. On the other hand, without using oxygen as a surfactant, Co grows three-dimensionally on Cu(110). The Co overlayer has its easy magnetization axis along the [001] direction, but the onset of the magnetization was observed at 11 ML Co at room temperature
Comparison of Thrombin Active Site and Exosite Inhibitors and Heparin in Experimental Models of Arterial and Venous Thrombosis and Bleeding
ABSTRAC
Lateral stiffness: A new nanomechanical measurement for the determination of shear strengths with friction force microscopy
Fabrication of Nanostructured GaAs/AlGaAs Waveguide for Low-Density Polariton Condensation from a Bound State in the Continuum
Exciton-polaritons are hybrid light-matter states that arise from strong
coupling between an exciton resonance and a photonic cavity mode. As bosonic
excitations, they can undergo a phase transition to a condensed state that can
emit coherent light without a population inversion. This aspect makes them good
candidates for thresholdless lasers, yet short exciton-polariton lifetime has
made it difficult to achieve condensation at very low power densities. In this
sense, long-lived symmetry-protected states are excellent candidates to
overcome the limitations that arise from the finite mirror reflectivity of
monolithic microcavities. In this work we use a photonic symmetry protected
bound state in the continuum coupled to an excitonic resonance to achieve
state-of-the-art polariton condensation threshold in GaAs/AlGaAs waveguide.
Most important, we show the influence of fabrication control and how surface
passivation via atomic layer deposition provides a way to reduce exciton
quenching at the grating sidewalls
Atomic Force Microscopy Study of an Ideally Hard Contact: The Diamond(111)/Tungsten Carbide Interface
Strain engineering and one-dimensional organization of metal-insulator domains in single-crystal VO2 beams
Spatial phase inhomogeneity at the nano- to microscale is widely observed in
strongly-correlated electron materials. The underlying mechanism and
possibility of artificially controlling the phase inhomogeneity are still open
questions of critical importance for both the phase transition physics and
device applications. Lattice strain has been shown to cause the coexistence of
metallic and insulating phases in the Mott insulator VO2. By continuously
tuning strain over a wide range in single-crystal VO2 micro- and nanobeams,
here we demonstrate the nucleation and manipulation of one-dimensionally
ordered metal-insulator domain arrays along the beams. Mott transition is
achieved in these beams at room temperature by active control of strain. The
ability to engineer phase inhomogeneity with strain lends insight into
correlated electron materials in general, and opens opportunities for designing
and controlling the phase inhomogeneity of correlated electron materials for
micro- and nanoscale device applications.Comment: 14 pages, 4 figures, with supplementary informatio
Addressing Corporate Ties to Slavery: Corporate Apologia in a Discourse of Reconciliation
Pressured by activists to take responsibility, American corporations recently found themselves in the spotlight for their past ties to slavery. Responding to the issue, they stepped into a complex discourse of reconciliation. Taking a rhetorical approach, this article analyzes the response of Aetna Inc. It explores how corporate rhetoric functions within present discourses about historical injustices and illustrates that Aetna\u27s response informed by common strategies of corporate apologia inhibited meaningful reconciliation. The article thus furthers criticisms of (corporate) apologia in the context of historical injustice and raises questions about the potentialities and limitations of corporate rhetoric for reconciliation
H2S interaction with Cu(100)-(2 √2 × √2 )R45°-O: Formation of a metastable ‖05 52sulfur surface reconstruction
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