Seasonal hydrologic trends in Iowa watersheds over the last half of the 20th century

Climate change is expected to cause significant changes in the global hydrologic cycle, yet the impact to regional hydrology is not well known for the Midwest U.S. As a first step in understanding the impact of climate change in Iowa watersheds, historical streamflow observations and model-derived time series of soil moisture, frozen ground and snow cover for ten Iowa watersheds were analyzed. The modeled data were generated using precipitation and temperature data spanning 1948 to 2003 as inputs to the conceptually-based hydrologic models of the National Weather Service river forecasting system. The models were calibrated for each watershed using observed discharge data. The time series were tested for trend significance using the Mann-Kendall test with the Trend-Free Pre-Whitening procedure at a p = 0.1 significance level. Results show an increasing trend in mean daily discharge, peak flow from rain, and low flows over the last 50 years. Monthly soil moisture content is also increasing, and is strongest during the warm seasons. Maximum daily flow from snow displays a decreasing trend and tendency to occur earlier in the year suggesting an earlier melt of the snowpack in the region. Results for frozen ground and snow cover show that the onset and conclusion has shifted to earlier in the year with more melt days occurring over the snow season. Although several of the hydrologic variables examined did not show statistical significance, trends in most hydrologic processes were observed. Different model calibration periods were tested and found to have minor influence on the average simulation accuracy, but did impact the simulated trends in streamflow. Model results from three calibrations indicate that the modeling system responds to changes in climate, but other factors that the model cannot account for (e.g. land-use change) may be reflected in the observed discharge from several basins

Neither Reform nor Rescue: "Woman's Work," Ordinary Culture, and the Articulation of Modern Swedish Femininities

This article examines the role of women in the construction of modern Swedish subjectivity through their participation in both quotidian activities and their networks of relations. Taking the work of Barbro Klein as a point of departure, I argue that Swedish women of the fin de siècle worked within overlapping and interconnected women’s networks through which they fashioned their own responses to the pressures of modernity within particular configurations of gender. Combining the social and political, formal and informal, labor and leisure, they created spaces for alternate cultural, commercial and social responses. These spaces from which femininity was lived as a positionality in discourse and social practice challenge the false dichotomies of past–future and tradition–modernity which have been central to the disciplinary narrative of folklore studies

This is my Body: the Uses and Effects of the Avatar in the Virtual World

Abstract The study focuse

MEMS-tunable dielectric metasurface lens using thin-film PZT for large displacements at low voltages

Tunable focusing is a desired property in a wide range of optical imaging and sensing technologies but has tended to require bulky components that cannot be integrated on-chip and have slow actuation speeds. Recently, integration of metasurfaces into electrostatic micro-electromechanical system (MEMS) architectures has shown potential to overcome these challenges but has offered limited out-of-plane displacement range while requiring large voltages. We demonstrate for the first time, to the best of our knowledge, a movable metasurface lens actuated by integrated thin-film PZT MEMS, which has the advantage of offering large displacements at low voltages. An out-of-plane displacement of a metasurface in the range of 7.2 µm is demonstrated under a voltage application of 23 V. This is roughly twice the displacement at a quarter of the voltage of state of the art electrostatic out-of-plane actuation of metasurfaces. Using this tunability, we demonstrate a varifocal lens doublet with a focal shift of the order of 250 µm at the wavelength 1.55 μm. The thin-film PZT MEMS-metasurface is a promising platform for miniaturized varifocal components.publishedVersio

Towards High Throughput Large Area Metalens Fabrication using UV-Nanoimprint lithography and Bosch Deep Reactive Ion Etching

We demonstrate the fabrication of diffraction-limited dielectric metasurface lenses for NIR by use of standard industrial high throughput silicon processing techniques: UV Nano Imprint Lithography (UV-NIL) combined with continuous Reactive Ion Etching (RIE) and pulsed Bosch Deep Reactive Ion Etching (DRIE). As the research field of metasurfaces moves towards applications these techniques are relevant as potential replacements of commonly used cost-intensive fabrication methods utilizing Electron Beam Lithography. We show that washboard-type sidewall surface roughness arising from the Bosch DRIE process can be compensated for in the design of the metasurface, without deteriorating lens quality. Particular attention is given to fabrication challenges that must be overcome towards high throughput production of relevance to commercial applications. Lens efficiencies are measured to be 30% and 17% at wavelengths {\lambda} = 1.55$\mu$m and {\lambda} = 1.31$\mu$m, respectively. A number of routes towards process optimization are proposed in relation to encountered challenges

Adverse Childhood Experiences and Mental Health Conditions Among Multiracial Adolescents

The relationships between adverse childhood experiences (ACEs) and mental health conditions have received much attention in the literature. A particularly well-documented type of ACE is household dysfunction. However, compared to monoracial youth, little is known about the relationship between this type of ACE and mental health outcomes among multiracial adolescents. Objective The objective of this study was to verify the factor structure of the household dysfunction type of ACE using data from the National Survey of Children’s Health (NSCH), and then examine whether household dysfunction (measured as a latent construct) was associated with mental health conditions among multiracial adolescents. Design We used cross-sectional data collected in 2016 from caregivers who completed the NSCH and analyzed data from a subpopulation of adolescents (12–17) who reported more than one race (n = 1,231). Mplus 8.4 was used to conduct confirmatory factor analysis and probit models from a structural equation modeling framework. Results Results from this study indicated that the household dysfunction type of ACE, as a latent construct, had good model fit and was significantly associated with depression [standardized coefficient [B] = .50, 95% confidence interval [CI] .36, .65], anxiety [B = .61, 95% CI .48, .73], behavior problems [B = .58, 95% CI .44, .72], and ADHD [B = .54, 95% CI .38, .69] for multiracial adolescents. Conclusions Household dysfunction may result in adolescents being separated (physically or emotionally) from their caregivers, which may hinder adolescents’ ability to establish or maintain one of the most important relationships needed to promote racial/ethnic identity development and mental health. Implications for advancements in theory and NSCH are presented

Freedom from disease in plaque psoriasis: Comparing the perceived importance of voting round 2 statements from a Delphi consensus of patients, physicians and nurses

© 2023 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology. This is an open access article under the terms of the Creative Commons Attribution-Non Commercial License. https://creativecommons.org/licenses/by-nc/4.0/Peer reviewe

Calibration of the charge and energy loss per unit length of the MicroBooNE liquid argon time projection chamber using muons and protons

We describe a method used to calibrate the position- and time-dependent response of the MicroBooNE liquid argon time projection chamber anode wires to ionization particle energy loss. The method makes use of crossing cosmic-ray muons to partially correct anode wire signals for multiple effects as a function of time and position, including cross-connected TPC wires, space charge effects, electron attachment to impurities, diffusion, and recombination. The overall energy scale is then determined using fully-contained beam-induced muons originating and stopping in the active region of the detector. Using this method, we obtain an absolute energy scale uncertainty of 2% in data. We use stopping protons to further refine the relation between the measured charge and the energy loss for highly-ionizing particles. This data-driven detector calibration improves both the measurement of total deposited energy and particle identification based on energy loss per unit length as a function of residual range. As an example, the proton selection efficiency is increased by 2% after detector calibration

Spontaneous neural synchrony links intrinsic spinal sensory and motor networks during unconsciousness

Non-random functional connectivity during unconsciousness is a defining feature of supraspinal networks. However, its generalizability to intrinsic spinal networks remains incompletely understood. Previously, Barry et al., 2014 used fMRI to reveal bilateral resting state functional connectivity within sensory-dominant and, separately, motor-dominant regions of the spinal cord. Here, we record spike trains from large populations of spinal interneurons in vivo in rats and demonstrate that spontaneous functional connectivity also links sensory- and motor-dominant regions during unconsciousness. The spatiotemporal patterns of connectivity could not be explained by latent afferent activity or by populations of interconnected neurons spiking randomly. We also document connection latencies compatible with mono- and disynaptic interactions and putative excitatory and inhibitory connections. The observed activity is consistent with the hypothesis that salient, experience-dependent patterns of neural transmission introduced during behavior or by injury/disease are reactivated during unconsciousness. Such a spinal replay mechanism could shape circuit-level connectivity and ultimately behavior