1,720 research outputs found
alpha-Phenyl-n-tert-butyl-nitrone Attenuates Lipopolysaccharide-induced Brain Injury and Improves Neurological Reflexes and Early Sensorimotor Behavioral Performance in Juvenile Rats
No full textA new spectral representation of earthquake data: Hilbert spectral analysis of station TCU129, Chi-Chi, Taiwan, 21 September 1999
No full textDoes concurrent management of mutual and hedge funds create conflicts of interest?
No full text[[abstract]]This paper shows that conflicts of interest may exist in cases where a hedge fund manager starts a mutual fund but not in the opposite case. We compare performance, asset flows, and risk incentives to establish several key differences between these two scenarios: First, prior to concurrent management, hedge fund managers experience worse performance while mutual fund managers achieve better performance relative to their full-time peers. Second, hedge fund managers who choose concurrent management are disproportionately the ones with less experience. Their hedge funds tend to suffer a decline in performance after the event. By contrast, mutual fund managers who choose concurrent management tend to outperform their full-time peers, Based on our findings, we make important recommendations for policy makers and companies. The relevance of our recommendations extends beyond the small share of companies presently engaged in concurrent management. (c) 2009 Elsevier B.V. All rights reserved.[[note]]SSC
Metadata for the HiWASE instrumentation deployed on the OWS Polarfront between September 2006 and December 2009
No full textBetween 1978 and 2009 the Norwegian weather ship Polarfront made continuous meteorological and surface wave measurements at Station M (66oN 2oE). In September 2006, as part of the UK-SOLAS HiWASE project (Brooks et al., 2009) the ship’s existing systems were complemented by the AutoFlux system (Yelland et al., 2009) to measure the transfers of momentum, heat and CO2 between the atmosphere and the ocean. Similarly, the ship's existing ship-borne wave recorder (SBWR) was supplemented by installing a commercial directional wave radar "WAVEX" made by the Norwegian firm MIROS.This report describes the metadata for the HiWASE instrumentation deployed on the OWS Polarfront between September 2006 and December 2009. Sensor serial numbers, dates of sensor changes and problems with sensors are contained in the associated tables
Development of a General Prediction Model of Moisture Content in Maize Seeds Based on LW-NIR Hyperspectral Imaging
No full textMoisture content (MC) is one of the important indexes to evaluate maize seed quality. Its accurate prediction is very challenging. In this study, the long-wave near-infrared hyperspectral imaging (LW-NIR-HSI) system was used, and the embryo side (S1) and endosperm side (S2) spectra of each maize seed were extracted, as well as the average spectrum (S3) of both being calculated. The partial least square regression (PLSR) and least-squares support vector machine (LS-SVM) models were established. The uninformative variable elimination (UVE) and successive projections algorithm (SPA) were employed to reduce the complexity of the models. The results indicated that the S3-UVE-SPA-PLSR and S3-UVE-SPA-LS-SVM models achieved the best prediction accuracy with an RMSEP of 1.22% and 1.20%, respectively. Furthermore, the combination (S1+S2) of S1 and S2 was also used to establish the prediction models to obtain a general model. The results indicated that the S1+S2-UVE-SPA-LS-SVM model was more valuable with Rpre of 0.91 and RMSEP of 1.32% for MC prediction. This model can decrease the influence of different input spectra (i.e., S1 or S2) on prediction performance. The overall study indicated that LW-HSI technology combined with the general model could realize the non-destructive and stable prediction of MC in maize seeds
Correlates of Active Commuting Frequency: Investigating Associations between Student Characteristics and Walking and Biking to School in Seattle and Washington State
No full textThesis (Master's)--University of Washington, 2025This research examines the correlates of active commuting among students, comparing Seattle and statewide populations in Washington State. Utilizing descriptive statistics and correlation analyses, the study identifies critical factors associated with students' decisions to walk or bike to school. Key findings include obesity negatively predicting active commuting, notably reducing daily walking rates. Conversely, frequent physical activity significantly correlates with higher active commuting behaviors, suggesting mutually reinforcing health practices. Notably, commuting frequency peaks at Grade 8 and declines in later grades, emphasizing the need for age-specific interventions. Additionally, urban infrastructure significantly supports higher active commuting rates in Seattle compared to statewide averages.Recommendations emerging from these findings emphasize prioritizing infrastructure development in suburban and rural areas, enhancing Safe Routes to School programs, and implementing comprehensive health education curricula. Schools should introduce motivational initiatives like walking school buses or incentive programs, particularly targeting students in higher grades. These targeted interventions promise to enhance student health outcomes and foster sustainable commuting practices, addressing both local and broader community contexts
Contributions of large wood to the initial establishment and diversity of riparian vegetation in a bar-braided temperate river
Full text linkThe purpose of this study was to examine the effects of large wood (LW) on the physical environment and the initial establishment of vascular plant species in the Rekifune River, a large bar-braided monsoonal river in Japan. The physical environment and the diversity and composition of plant species were compared in relation to the orientation of LW pieces. We found that shading effects were more prevalent in the immediate vicinity of LW pieces than in quadrats distant from LW. The effect was especially strong at the center of LW jams (the "jam center"). Fine sand and silt were concentrated in the quadrats downstream from the LW pieces. In contrast, cobbles dominated the upstream quadrats. The highest diversity was found in the jam center, while intermediate values were observed in the quadrats surrounding LW. Indicator species analysis detected 21 indicator species only in the jam center. The LW jams favored the deposition of plant fragments and sediment and created shaded areas within and around the structures. Buried seeds may be transported with LW during a flood, and seeds dispersed by wind and stream flows may be trapped by the complex structure of LW jams. The specific environmental conditions and the trapping of seeds and plant fragments result in the early establishment of mid-successional tree species at LW jams. In conclusion, the LW pieces deposited on gravel bars altered the light and substrate conditions and thereby provided specific safe sites for various riparian plant species
An f/0.27 High-Gain Lens Antenna for Ultrasmall Platforms at THz Frequencies
No full textThe development of a low focal number and low-mass lens antenna is presented that enables terahertz spectroscopy applications on ultracompact platforms. The antenna operates efficiently over a 20% fractional bandwidth, from 450 to 550 GHz, with a gain of 50 dBi at 500 GHz. The antenna consists of a hyperbolic silicon lens that is placed in a record low focal number configuration (f#=0.27) with respect to an advanced waveguide feed. An incident field-matching analysis is applied to investigate the optimal feed radiation pattern that maximizes the lens aperture efficiency, which would result in a 20% increase in aperture efficiency (> 80%) with respect to a standard open-ended waveguide (< 60% aperture efficiency). A multilayer leaky-wave (LW) stratification is quasi-analytically optimized to approximate the optimal feeding pattern, resulting in a >70% lens aperture efficiency. An example LW stratification is synthesized using silicon micromachining technology and is fully characterized in combination with the dielectric lens. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Tera-Hertz Sensin
Precipitation patterns control the distribution and export of large wood at the catchment scale
Full text linkLarge wood (LW) plays an important role in river ecosystems, but LW-laden floods may cause serious damage to human lives and property. The relationship between precipitation patterns and variations in LW distribution and export at the watershed scale is poorly understood. To explore these linkages, we examined differences in LW distribution as a function of channel morphologies in six watersheds located in southern and northern Japan and analysed the impacts of different precipitation patterns on the fluvial export of LW from river catchments. In southern Japan, intense rainfalls caused by typhoons or localized torrential downpours initiate landslides and debris flows that introduce massive amounts of LW into channels. Gravel bars formed by frequent flood events are widely prevalent, and the LW temporarily stored on these bars is frequently moved and/or broken into smaller pieces by floods. In these systems fluvial export of LW is supply-limited, with smaller accumulations and shorter residence times than in northern Japan. Conversely, in northern Japan, where typhoons and torrential downpours rarely occur, LW is mostly recruited by bank erosion, tree mortality and windthrow into channels, rather than by landslides and debris flows. Recruited pieces accumulate in log jams on valley floors, particularly on floodplains supporting mature forests, resulting in larger accumulations and longer residence times. In these watersheds fluvial export of LW is transport-limited, and the pieces gradually decompose during long-term storage as log jams. Copyright (C) 2015 John Wiley & Sons, Ltd
Weight data lets you fine-tune
No full textThe article discusses a study on the possible benefits of daily liveweight (LW) monitoring in dairy herds. It cites that farmers can reduce the negative effects of LW change. It mentions that the study covers 450 mixed-age dairy cows, with data collected via a walk-over weighing system that measured the LW of each cow after leaving the milking platform. The author shares that LW change in postpartum and LW change after start of mating are indicators of the cow's reproductive performance
- …
