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Quantification of energetic electron precipitation caused by wave-particle interactions is fundamentally important to understand the cycle of particle energization and loss of the radiation belts. One important way to determine how well the wave-particle interaction models predict losses through pitch-angle scattering into the atmospheric loss cone is the direct comparison between the ionization altitude profiles expected in the atmosphere due to the precipitating fluxes and the ionization profiles actually measured with incoherent scatter radars. This paper reports such a comparison using a forward propagation of loss-cone electron fluxes, calculated with the electron pitch angle diffusion model applied to Van Allen Probes measurements, coupled with the Boulder Electron Radiation to Ionization model, which propagates the fluxes into the atmosphere. The density profiles measured with the Poker Flat Incoherent Scatter Radar operating in modes especially designed to optimize measurements in the D-region, show multiple instances of close quantitative agreement with predicted density profiles from precipitation of electrons caused by wave-particle interactions in the inner magnetosphere, alternated with intervals with large differences between observations and predictions. Several-minute long intervals of close prediction-observation approximation in the 65-93 km altitude range indicate that the whistler wave-electron interactions models are realistic and produce precipitation fluxes of electrons with energies between 10 keV and >100 keV that are consistent with observations. The alternation of close model-data agreement and poor agreement intervals indicates that the regions causing energetic electron precipitation are highly spatially localized.

The DESI Legacy Imaging Surveys (http://legacysurvey.org/) are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing-Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image ≈14,000 deg2 of the extragalactic sky visible from the northern hemisphere in three optical bands (g, r, and z) using telescopes at the Kitt Peak National Observatory and the Cerro Tololo Inter-American Observatory. The combined survey footprint is split into two contiguous areas by the Galactic plane. The optical imaging is conducted using a unique strategy of dynamically adjusting the exposure times and pointing selection during observing that results in a survey of nearly uniform depth. In addition to calibrated images, the project is delivering a catalog, constructed by using a probabilistic inference-based approach to estimate source shapes and brightnesses. The catalog includes photometry from the grz optical bands and from four mid-infrared bands (at 3.4, 4.6, 12, and 22 μm) observed by the Wide-field Infrared Survey Explorer satellite during its full operational lifetime. The project plans two public data releases each year. All the software used to generate the catalogs is also released with the data. This paper provides an overview of the Legacy Surveys project.

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the universe using the baryon acoustic oscillations technique. The spectra of 35 million galaxies and quasars over 14,000 square degrees will be measured during a 5-year survey. A new prime focus corrector for the Mayall telescope at Kitt Peak National Observatory will deliver light to 5,000 individually targeted fiber-fed robotic positioners. The fibers in turn feed ten broadband multi-object spectrographs. We describe the ProtoDESI experiment, that was installed and commissioned on the 4-m Mayall telescope from 2016 August 14 to September 30. ProtoDESI was an on-sky technology demonstration with the goal to reduce technical risks associated with aligning optical fibers with targets using robotic fiber positioners and maintaining the stability required to operate DESI. The ProtoDESI prime focus instrument, consisting of three fiber positioners, illuminated fiducials, and a guide camera, was installed behind the existing Mosaic corrector on the Mayall telescope. A fiber view camera was mounted in the Cassegrain cage of the telescope and provided feedback metrology for positioning the fibers. ProtoDESI also provided a platform for early integration of hardware with the DESI Instrument Control System that controls the subsystems, provides communication with the Telescope Control System, and collects instrument telemetry data. Lacking a spectrograph, ProtoDESI monitored the output of the fibers using a fiber photometry camera mounted on the prime focus instrument. ProtoDESI was successful in acquiring targets with the robotically positioned fibers and demonstrated that the DESI guiding requirements can be met.

The aim of this study was to compare Canadian community colleges with post-secondary vocational schools in Poland. The comparison concentrated upon programs in nursing, tourism and information technology delivered by the following three Polish schools Krakowska Szkola Medyczna, (Cracow, Poland), Policealne Studium Zawodowe, (Cracow, Poland), Cracow School of Information Technology and four Canadian community colleges Red Deer, (Red Deer, Alberta) Centennial (Scarborough, Ontario), Durham (Oshawa, Ontario) and Confederation (Thunder Bay, Ontario). Two research approaches were used in this study: qualitative and quantitative mixed research methodologies. Moreover, the theoretical framework was supplied by the general notion of the school as an organization and social institution. The investigators tried to answer the following research questions. (1) Are post-secondary vocational institutions meeting the requirements of the labor market as well as Canadian community colleges? The predicted answer was "no" because it is easier for colleges to form articulation agreements with schools of higher education than it is for their Polish counterparts. Community colleges in Canada are part of the same post- secondary system of schooling as schools of higher education whereas post-secondary vocational institutions are not--they are part of a secondary school scheme. Articulation agreements allow learners to begin their vocational or academic training in one institution and continue it in another. Labor market requirements are better addressed with comprehensive course transfer agreements. (2) Do Canadian college students have a higher perception of their programs than their Polish post-secondary vocational school counterparts? The predicted answer was "yes" because colleges are higher up in the school structure "pecking order" than post-secondary vocational schools in Poland: post-secondary as opposed to secondary. It was hypothesized that college learners ought to place more value on their programs than their Polish counterparts. The results of our investigation partially supported the predicted answer "no" for question 1--Centennial College's program in tourism has more articulation agreements than their Polish counterpart (Policealne Studium Zawodowe). The predicted answer "yes" was fully confirmed, with regard to question 2. (Contains 12 figures and 8 notes.)

The goal of this investigation was to assess the accuracy of 18F-fluorodihydrorotenone (18F-FDHR) as a new deposited myocardial flow tracer and compare the results to those for 201Tl. Methods. The kinetics of these flow tracers were evaluated in 22 isolated, erythrocyte- and albumin-perfused rabbit hearts over a flow range encountered in patients. The two flow tracers plus a vascular reference tracer (131I-albumin) were introduced as a bolus through a port just above the aortic cannula. Myocardial extraction, retention, washout, and uptake parameters were computed from the venous outflow curves using the multiple indicator dilution technique and spectral analysis. Results. The mean initial extraction fractions of 18F-FDHR (0.85 +- 0.07) and 201Tl (0.87 +- 0.05) were not significantly different, although the initial extraction fraction for 18F-FDHR declined with flow (P < 0.0001), whereas the initial extraction fraction of 201Tl did not. Washout of 201Tl was faster (P < 0.001) and more affected by flow (P < 0.05) than 18F-FDHR washout. Except for initial extraction fraction, 18F-FDHR retention was greater (P < 0.001) and less affected by flow (P < 0.05) than 201Tl retention. Reflecting its superior retention, net uptake of 18F-FDHR was better correlated with flow than 201Tl uptake at both one and fifteen minutes after tracer introduction (P < 0.0001 for both comparisons). Conclusion. The superior correlation of 18F-FDHR uptake with flow indicates that it is a better flow tracer than 201Tl in the isolated rabbit heart. Compared to the other currently available positron-emitting flow tracers (82Rb, 13N-ammonia, and 15O-water), 18F-FDHR has the potential of providing excellent image resolution without the need for an on-site cyclotron.

Kinetic analysis of dynamic tracer data is performed with the goal of evaluating myocardial radiotracers for cardiac nuclear medicine imaging. Data from experiments utilizing the isolated rabbit heart model are acquired by sampling the venous blood after introduction of a tracer of interest and a reference tracer. We have taken the approach that the kinetics are properly characterized by an impulse response function which describes the difference between the reference molecule (which does not leave the vasculature) and the molecule of interest which is transported across the capillary boundary and is made available to the cell. Using this formalism we can model the appearance of the tracer of interest in the venous output of the heart as a convolution of the appearance of the reference tracer with the impulse response. In this work we parameterize the impulse response function as the sum of a large number of exponential functions whose predetermined decay constants form a spectrum, and each is required only to have a nonnegative coefficient. This approach, called spectral analysis, has the advantage that it allows conventional compartmental analysis without prior knowledge of the number of compartments which the physiology may require or which the data will support.

Purpose: The Rapid Assessment of Problem Solving test (RAPS) is a clinical measure of problem solving based on the 20 Questions Test. This article updates clinicians on the RAPS, addresses questions raised about the test in an earlier article (R. C. Marshall, C. M. Karow, C. Morelli, K. Iden, & J. Dixon, 2003a), and discusses the clinical utility of the RAPS. Method: The RAPS was administered to 373 normal adults. Tests were analyzed to assess the impact of demographic, psychometric, and other factors on performance on the RAPS. To determine the effects of strategy selection on test scores, participants were assigned to novel, category-focused, or mixed strategy groups based on the types of first questions asked. Results: Normal participants exhibited a range of performance levels on the RAPS. Participants in the novel strategy group performed significantly better than the participants in 2 other strategy groups. Conclusions: The RAPS is a clinically useful tool to examine problem solving that is easy to administer and to score. Findings suggest clinicians can use the RAPS with greater confidence than was the case 4 years ago. The RAPS is now part of the public domain and may be used by clinicians to assess clients' problem-solving deficits. (Contains 7 tables, 2 figures and 1 footnote.)

Purpose: Semantic feature analysis (SFA) was used to determine whether training contextually related words would improve the discourse of individuals with nonfluent aphasia in preselected contexts. Method: A modified multiple-probes-across-behaviors design was used to train target words using SFA in 3 adults with nonfluent aphasia. Pretreatment, posttreatment, and follow-up sessions obtained language samples for the preselected contexts. Contexts included 4 story retellings and 4 procedure explanations. Results: All participants improved naming ability for treated words. No generalization to untrained items was found. Within discourse samples, participants increased number of target words produced from pretreatment to posttreatment sessions but did not increase lexical diversity across samples. Participants maintained performance on standardized measures from the beginning to the end of the study. Conclusions: Results support and extend previous research by indicating that SFA improves confrontational naming ability and may benefit word retrieval in discourse production of closed-set contexts. (Contains 5 tables and 3 figures.)

Purpose: The Kentucky Aphasia Test (KAT) is an objective measure of language functioning for persons with aphasia. This article describes materials, administration, and scoring of the KAT; presents the rationale for development of test items; reports information from a pilot study; and discusses the role of the KAT in aphasia assessment. Method: The KAT has 3 parallel test batteries, KAT-1, KAT-2, and KAT-3. Each battery contains the same orientation test and 6 subtests, each with 10 items, assessing expressive and receptive language functions. Subtests for KAT-1, KAT-2, and KAT-3 systematically increase in difficulty so that it is possible to assess individuals with severe, moderate, and mild aphasia, respectively. The KAT was administered to 38 participants with aphasia and 31 non-brain-damaged (NBD) participants. Results: Results with the KAT clearly differentiated the language performance of individuals with and without aphasia. NBD participants made few errors, and overall scores on the test for individuals with aphasia were rarely within 1 "SD" of the NBD group. Performance of the participants with aphasia administered KAT-1, KAT-2, and KAT-3 suggested that the 3 versions of the test represent a hierarchy of difficulty. Conclusions: The KAT remains in its early stages of development. However, it does appear to meet the requirements for a "clinician-friendly" aphasia test and, as such, offers a rapid, convenient means of obtaining an objective score to determine changes in language functioning during the early postonset period. (Contains 4 tables, 1 figure and 1 footnote.)

Purpose: The personalized cueing method is a novel procedure for treating naming deficits of persons with aphasia that is relatively unfamiliar to most speech-language pathologists. The goal of this article is to introduce the personalized cueing method to clinicians so that it might be expanded and improved upon. It is also hoped that this article will promote further research in the treatment of naming deficits of clients with aphasia. Method: This clinical focus article (a) describes the origins of the personalized cueing method, the steps involved in creating personalized cues, and training and assessment procedures used with the personalized cueing method; (b) summarizes the published research supporting the use of the personalized cueing method; and (c) highlights some of the clinical advantages of this novel naming treatment for clients and clinicians. Results: Research with the personalized cueing method indicates that durability (long-term naming accuracy) for items trained with the personalized cueing method exceeds that for items trained with phonological cueing and other methods. It further shows that as the stimuli used to train naming in the personalized cueing experiments have become more realistic, durability of personalized cueing has increased. Conclusions: Personalized cueing is a parsimonious approach for treatment of naming deficits of persons with aphasia that has shown positive treatment effects in 8-12 training sessions.

Describes a program whereby Illinois Valley Community College faculty offered courses for honors students at Marquette High School that were guaranteed to transfer to four-year colleges in Illinois. Considers the curriculum, course content, grading, student comments and impressions of the college, program institutionalization, and transfer outcomes. (DMM)