133,857 research outputs found
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
INDIRECT SAMPLING in the CONTEXT of DUAL FRAME SURVEYS
No full textUnder-coverage is one of the most common problems of sampling frames. To reduce the impact of coverage error on survey estimates several frames can be combined in order to achieve a complete (or nearly complete) coverage of the target population. Multiple frame estimators have been developed to be used in the context of multiple frame surveys. Sampling frames may overlap which is the case when a single unit of the sampling frame is related with more than one element of the target population. Indirect sampling (Lavallée, 1995) is an alternative approach to classical sampling theory in dealing with the overlapping problem of sampling frames on survey estimates. Not infrequently a survey may need more than one sampling frame in order to improve coverage and simultaneously the sampling frame overlap. In this paper a new class of estimators is presented which is the result from merging multiple frames estimators (only the particular case of dual frames will be presented) with indirect sampling estimators in order to bring together in a single estimator the effect of several frames on survey estimates.Indirect Sampling, Generalized Weight Share Method, Dual Frame Surveys
Data for Genetic manipulation of neuronal lactate dehydrogenase A expression results in sex- and age-dependent effects on mouse cognition
No full textRaw data and analyses for all figures
Steven Johnson Author Talk Poster
No full textK-State Book NetworkA poster advertising an author talk by Steven Johnson at Kansas State University on September 3, 2014. Steven Johnson's book "The Ghost Map" was the 2014-2015 common book
The role of Scene Type and Priming in the processing and selection of a spatial frame of reference
No full textJohannsen K, de Ruiter J. The role of Scene Type and Priming in the processing and selection of a spatial frame of reference. Frontiers in Psychology. 2013;4:182.The selection and processing of a spatial frame of reference (FOR) in interpreting verbal scene descriptions is of great interest to psycholinguistics. In this study, we focus on the choice between the relative and the intrinsic FOR, addressing two questions: (a) does the presence or absence of a background in the scene influence the selection of a FOR, and (b) what is the effect of a previously selected FOR on the subsequent processing of a different FOR. Our results show that if a scene includes a realistic background, this will make the selection of the relative FOR more likely. We attribute this effect to the facilitation of mental simulation, which enhances the relation between the viewer and the objects. With respect to the response accuracy, we found both a higher (with the same FOR) and a lower accuracy (with a different FOR), while for the response latencies, we only found a delay effect with a different FOR
Governing Low Profile Issues: A Frame Analysis of Drug Addiction in a Local Setting
No full textFrame analysis was developed by Erving Goffman as a sociological concept, used for understanding how individual actors relate themselves to the world, creating coherent frames out of individual social experiences. We apply frame analysis in the emergent field of sociology of governance, using the example of low profile public issue of drug addiction in a specific local social and political context of a municipality in Bosnia and Herzegovina, in order to understand the roles of governance actors and their social interactions in the attribution of meaning. We focus on mental organization of governance experiences related to drug addiction and the strategic involvement of different governance actors which use given frames. We discuss the importance of frame coherence and ways in which it can be achieved for the low profile issues.Frame Analysis, Sociology of Governance, Low Profile Issues, Frame Coherence
Experimental assessment and retrofit of full-scale models of existing RC frames
No full textPSD tests on two full-scale models of existing non-seismic resisting RC frame structures are
described. The testing program covered several aspects, namely assessment of seismic
performance of existing frames without and with infill panels, retrofitting of the bare frame
using Selective Retrofitting techniques, strengthening of the infill panels using shotcrete and
retrofitting of the frame using K-bracing with shear-link dissipators. The main results from
the tests are summarized and discussed and the conclusions are drawn. The tests on the bare
frame have shown how vulnerable are existing structures constructed in the 60’s and the
beneficial effects of infill panels were confirmed from the tests on the infilled frame.
Important improvements, in terms of seismic performance, were achieved by the retrofitting
of the frames. However, it was also confirmed that strengthening of the existing infill panels
in poorly detailed frames may lead to dangerous ‘local’ failures, such as the shear out of the
external columns
New Stationary Frame Control Scheme for Three Phase PWM Rectifiers Under Unbalanced Voltage Dips Conditions
No full textA new stationary frame control scheme for three-phase pulsewidth-modulation (PWM) rectifiers operating under unbalanced voltage dips conditions is proposed in this paper. The proposed control scheme regulates the instantaneous active power at the converter poles to minimize the harmonics of the input currents and the output voltage ripple. This paper's novelty is the development of a new current-reference generator implemented directly in stationary reference frame. This allows using proportional sinusoidal signal integrator (P-SSI) controllers for simultaneous compensation of both positive and negative current sequence components. No phase-locked loop (PLL) strategies and coordinate transformations are needed for the proposed current-reference generator. Experimental results are presented for a 20-kV A alternative current (ac)/direct current (dc) converter prototype to demonstrate the effectiveness of the proposed control scheme. A comparison with two other existing control techniques is also performed. Fast dynamic performance with small dc-link voltage ripple and input sinusoidal currents are obtained with this control scheme, even under severe voltage dips operating condition
Dynamic nonlinear analyses for the 4-storey infilled R/C frame: study of a retrofitting solution
No full textA research project on assessment and retrofitting of R/C frame structures is currently being developed under the research programme of the ICONS TMR-research network. This paper presents and discusses the preliminary experimental results from a 4-storey bare frame representative of the common practice of 40~50 years ago in most south European countries and devotes special attention to the study of a retrofitting solution based on bracing and rubber dissipaters, which intends to increase stiffness and damping reducing consequently the earthquake deformation demands.O estudo aqui apresentado concentra-se numa solução de reforço de um pórtico utilizando contraventamentos (k-bracing) com perfis de aço em conjunto com elementos elastoméricos de dissipação. Os resultados das análises não lineares da estrutura com e sem alvenaria e com reforço são apresentados e discutidos. Na segunda parte da comunicação apresentam-se os resultados experimentais já disponíveis e discute-se o problema da modelação recorrendo aos resultados experimentais e comparando os resultados obtidos com diferentes tipos de modelos
The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs
No full textWe present K -band (24 GHz) images of 731 compact extragalactic radio sources with submilliarcsecond resolution, based on radio interferometric observations made with the Very Long Baseline Array of 10 telescopes during 29 day long sessions spanning from 2015 to 2018 and recorded at 2048 Mbps. Many of these sources are imaged with submilliarcsecond resolution for the first time at frequencies above X band (8 GHz). From each of the K -band images, we derive the following source properties: peak brightness, core and total flux density, the ratio of peak and core to total flux (compactness measure), radial source extent, structure index, source size, and jet direction. The vast majority of sources are imaged at multiple epochs, providing insights into their temporal behavior. The use of K band was motivated by the fact that the sources are generally intrinsically more compact at higher frequencies, as well as by the factor of 3 improvement in interferometer resolution relative to the historically standard S / X band (2.3/8.4 GHz) used for a large amount of reference frame and calibrator work. Lastly, as most of the sources imaged here are in the K -band component of the third International Celestial Reference Frame, these images serve to characterize the objects used in that International Astronomical Union standard
- …
