510 research outputs found

    Growing Smarter: Achieving Sustainability in Emerging Community Foundations

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    It's a striking paradox: as community foundations grow their assets, their sustainability is often threatened. That's the conclusion of a new paper written by FSG Social Impact Advisors and sponsored by The James Irvine Foundation. "Growing Smarter: Achieving Sustainability in Emerging Community Foundations" is based on research with growing and small community foundations. The information and models presented have relevance to community foundations of virtually any size that are interested in better understanding and enhancing their economic models

    Budget Planning, Budget Control, Business Age, and Financial Performance in Small Businesses

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    Over 390,000 businesses failed in the United States in 2014. The primary cause for most business failures is poor planning, and budgets are a primary means of planning. The purpose of this correlational study was to examine to what extent, if any, budget planning, budget control, and the age of the business significantly predict financial performance in small businesses. The target population consisted of small business leaders in the Midwest. Churchill and Lewis\u27s theory on the relative importance of selected management factors of small businesses through 5 stages of development formed the theoretical framework for this study. Data were collected through a self-developed online survey using existing Likert-scale measures for each variable based on prior research about those variables. A convenience sample of 86 Midwest U.S. small business leaders identified through SurveyMonkey\u27s crowdsourcing pool resulted in 77 participants with useable responses. Standard multiple linear regression determined the extent to which budget planning, budget control, and age of the business predicted the value of financial performance. The model as a whole was able to significantly predict financial performance. The linear combination of predictor variables (budget planning, budget control, and business age) accounted for approximately 12% of the variation in financial performance. Budget planning significantly predicted financial performance, even when budget control and business age were held constant. Better planning using budgets may help leaders improve the financial health of their small businesses, potentially reducing business failures and job losses. Financially strong and healthy small businesses can create jobs and improve the economic health of local communities

    Searching for Evidence-Based Practice: A Survey of Empirical Studies on Curricular Interventions Measuring and Reporting Fidelity of Implementation Published During 2004-2013

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    In an environment of accountability, the development of evidence-based practices is expected. To demonstrate that a practice is evidence based, quality indicators of rigorous methodology should be present including indications that teachers implementing an intervention have done so with fidelity to its design. Because evidence-based practices assume fidelity of implementation (FOI), failure to establish FOI limits the conclusions that can be drawn from any outcome evaluation. This study surveys the gifted education literature to ascertain the degree to which FOI has been assessed, reported, and tied to measured outcomes in curriculum intervention efficacy studies and outcome evaluations. Of the 11 curriculum intervention studies included in this survey, each addressed FOI. The nature and quality of the methods used, however, to measure FOI, as well as the degree to which fidelity data were reported, varied widely among these studies, which suggests the need for increased methodological rigor in gifted curriculum research

    Inhomogeneous Energy Injection in the 21-cm Power Spectrum: Sensitivity to Dark Matter Decay

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    The 21-cm signal provides a novel avenue to measure the thermal state of the universe during cosmic dawn and reionization (redshifts z530z\sim 5-30), and thus to probe energy injection from decaying or annihilating dark matter (DM). These DM processes are inherently inhomogeneous: both decay and annihilation are density dependent, and furthermore the fraction of injected energy that is deposited at each point depends on the gas ionization and density, leading to further anisotropies in absorption and propagation. In this work, we develop a new framework for modeling the impact of spatially inhomogeneous energy injection and deposition during cosmic dawn, accounting for ionization and baryon density dependence, as well as the attenuation of propagating photons. We showcase how this first completely inhomogeneous treatment affects the predicted 21-cm power spectrum in the presence of exotic sources of energy injection, and forecast the constraints that upcoming HERA measurements of the 21-cm power spectrum will set on DM decays to photons and to electron/positron pairs. These projected constraints considerably surpass those derived from CMB and Lyman-α\alpha measurements, and for decays to electron/positron pairs they exceed all existing constraints in the sub-GeV mass range, reaching lifetimes of 1028s\sim 10^{28}\,\mathrm{s}. Our analysis demonstrates the unprecedented sensitivity of 21-cm cosmology to exotic sources of energy injection during the cosmic dark ages. Our code, DM21cm\mathtt{DM21cm}, includes all these effects and is publicly available in an accompanying release.Comment: 33 pages, 22 figures, public code at https://github.com/yitiansun/DM21c

    Adaptation to an Intracellular Lifestyle by a Nitrogen-Fixing, Heterocyst-Forming Cyanobacterial Endosymbiont of a Diatom

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    The symbiosis between the diatom Hemiaulus hauckii and the heterocyst-forming cyanobacterium Richelia intracellularis makes an important contribution to new production in the world’s oceans, but its study is limited by short-term survival in the laboratory. In this symbiosis, R. intracellularis fixes atmospheric dinitrogen in the heterocyst and provides H. hauckii with fixed nitrogen. Here, we conducted an electron microscopy study of H. hauckii and found that the filaments of the R. intracellularis symbiont, typically composed of one terminal heterocyst and three or four vegetative cells, are located in the diatom’s cytoplasm not enclosed by a host membrane. A second prokaryotic cell was also detected in the cytoplasm of H. hauckii, but observations were infrequent. The heterocysts of R. intracellularis differ from those of free-living heterocyst-forming cyanobacteria in that the specific components of the heterocyst envelope seem to be located in the periplasmic space instead of outside the outer membrane. This specialized arrangement of the heterocyst envelope and a possible association of the cyanobacterium with oxygen-respiring mitochondria may be important for protection of the nitrogen-fixing enzyme, nitrogenase, from photosynthetically produced oxygen. The cell envelope of the vegetative cells of R. intracellularis contained numerous membrane vesicles that resemble the outer-inner membrane vesicles of Gram-negative bacteria. These vesicles can export cytoplasmic material from the bacterial cell and, therefore, may represent a vehicle for transfer of fixed nitrogen from R. intracellularis to the diatom’s cytoplasm. The specific morphological features of R. intracellularis described here, together with its known streamlined genome, likely represent specific adaptations of this cyanobacterium to an intracellular lifestyle

    Exploring the Relationship Between Fidelity of Implementation and Academic Achievement in a Third-Grade Gifted Curriculum: A Mixed-Methods Study

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    This study used sequential mixed-methods analyses to investigate the effectiveness of a research-based language arts curriculum for gifted third graders. Using analytic induction, researchers found that teachers’ beliefs and expectations (time, sense of autonomy, expectations for students, professional expertise) influenced the degree to which they implemented the research intervention with fidelity to its design. Next, maximum variation sampling and quantitative analysis of student outcomes determined that postassessment achievement test scores are higher for students in classrooms with teachers who show high fidelity or adherence to the intervention

    Morinda citrifolia (Noni) Juice Augments Mammary Gland Differentiation and Reduces Mammary Tumor Growth in Mice Expressing the Unactivated c-erbB2 Transgene

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    Morinda citrifolia (noni) is reported to have many beneficial properties, including on immune, inflammatory, quality of life, and cancer endpoints, but little is known about its ability to prevent or treat breast cancer. To test its anticancer potential, the effects of Tahitian Noni Juice (TNJ) on mammary carcinogenesis were examined in MMTV-neu transgenic mice. Mammary tumor latency, incidence, multiplicity, and metastatic incidence were unaffected by TNJ treatment, which suggests that it would not increase or decrease breast cancer risk in women taking TNJ for its other benefits. However, noni may be useful to enhance treatment responses in women with existing HER2/neu breast cancer since TNJ resulted in significant reductions in tumor weight and volume and in longer tumor doubling times in mice. Remarkably, its ability to inhibit the growth of this aggressive form of cancer occurred with the mouse equivalent of a recommended dose for humans (<3 oz/day). A 30-day treatment with TNJ also induced significant changes in mammary secondary ductule branching and lobuloalveolar development, serum progesterone levels, and estrous cycling. Additional studies investigating TNJ-induced tumor growth suppression and modified reproductive responses are needed to characterize its potential as a CAM therapy for women with and without HER2+ breast cancer

    The medically managed patient with severe symptomatic aortic stenosis in the TAVR era: Patient characteristics, reasons for medical management, and quality of shared decision making at heart valve treatment centers

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    Background Little is known about patients with severe symptomatic aortic stenosis (AS) who receive medical management despite evaluation at a heart valve treatment center. Objective We identified patient characteristics associated with medical management, physician-reported reasons for selecting medical management, and patients’ perceptions of their involvement and satisfaction with treatment selection. Methods and results Of 454 patients evaluated for AS at 9 established heart valve treatment centers from December 12, 2013 to August 19, 2014, we included 407 with severe symptomatic AS. Information was collected using medical record review and survey of patients and treating physicians. Of 407 patients, 212 received transcatheter aortic valve replacement (TAVR), 124 received surgical aortic valve replacement (SAVR), and 71 received medical management (no SAVR/TAVR). Thirty-day predicted mortality was higher in patients receiving TAVR (8.7%) or medical management (9.8%) compared with SAVR (3.4%) (P<0.001). Physician-reported reasons for medical management included patient preference (31.0%), medical futility (19.7%), inoperability/anatomic infeasibility (11.3%), and inadequate vascular access (8.5%). Compared with patients receiving AVR, medically managed patients were less likely to report that they received enough information about the pros and cons of treatment options (P = 0.03), that their physicians involved them in treatment decisions (P<0.001), and that final decisions were the right ones (P<0.001). Conclusions Patient preference was the most common physician-reported reason for selecting non-invasive AS management, yet patients not undergoing AVR after valve center evaluation reported being less likely to receive sufficient education about treatment options and more likely to feel uncertain about final treatment decisions. Greater attention to shared decision making may improve the experience of care for this vulnerable group of patients

    Risk perception influences athletic pacing strategy.

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    PURPOSE: The objective of this study is to examine risk taking and risk perception associations with perceived exertion, pacing, and performance in athletes. METHODS: Two experiments were conducted in which risk perception was assessed using the domain-specific risk taking (DOSPERT) scale in 20 novice cyclists (experiment 1) and 32 experienced ultramarathon runners (experiment 2). In experiment 1, participants predicted their pace and then performed a 5-km maximum effort cycling time trial on a calibrated Kingcycle mounted bicycle. Split times and perceived exertion were recorded every kilometer. In experiment 2, each participant predicted their split times before running a 100-km ultramarathon. Split times and perceived exertion were recorded at seven checkpoints. In both experiments, higher and lower risk perception groups were created using median split of DOSPERT scores. RESULTS: In experiment 1, pace during the first kilometer was faster among lower risk perceivers compared with higher risk perceivers (t(18) = 2.0, P = 0.03) and faster among higher risk takers compared with lower risk takers (t(18) = 2.2, P = 0.02). Actual pace was slower than predicted pace during the first kilometer in both the higher risk perceivers (t(9) = -4.2, P = 0.001) and lower risk perceivers (t(9) = -1.8, P = 0.049). In experiment 2, pace during the first 36 km was faster among lower risk perceivers compared with higher risk perceivers (t(16) = 2.0, P = 0.03). Irrespective of risk perception group, actual pace was slower than predicted pace during the first 18 km (t(16) = 8.9, P < 0.001) and from 18 to 36 km (t(16) = 4.0, P < 0.001). In both experiments, there was no difference in performance between higher and lower risk perception groups. CONCLUSIONS: Initial pace is associated with an individual's perception of risk, with low perceptions of risk being associated with a faster starting pace. Large differences between predicted and actual pace suggest that the performance template lacks accuracy, perhaps indicating greater reliance on momentary pacing decisions rather than preplanned strategy.This is the author accepted manuscript. The final version is available from Wolters Kluwer via http://dx.doi.org/10.1249/MSS.000000000000050

    The Vehicle, Spring 2006

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    Table of Contents Inicio de TerminoJacob Fosterpage 1 Devoted FriendMaurice Tracypage 2 Bad Hair DaysGreg Coreypage 2 Shelf LifeJody Shootpage 3 AnointMaurice Tracypage 4 Understanding BlackAmanda Bushpage 5 My Uncle\u27s HouseCarissa Haydenpage 7 Try, And Save Your BreathGreg Coreypage 8 Solid AdviceAnthony Shootpage 8 Calligraphy / The Metamorphosis / Buttercup DragonflyGrey Harrellpage 9 Swinging FireMaurice Tracypage 11 Epitaph for a Man With No Name 1860-1892Dallas Schumacherpage 12 Untitled 71Ben Hartpage 13 Random Maunderings of a Ford Hall InsomniacJacob Fosterpage 14 Fat BangsLakisha Allenpage 15 I WantMaurice Tracypage 16 DiscoveryCarissa Haydenpage 17 Poverty SpongeChris Robinsonpage 18 Seedless GrapesAnthony Shootpage 19 Untitled 34Ben Hartpage 20 DiscoveryCarissa Haydenpage 21 drunk againAnthony Shootpage 22 SquareMaurice Tracypage 23 Let Me Just Say ThisJody Shootpage 24 passing a small cemetery after a stormAnthony Shootpage 25 Career DayMitch Jamespage 26 Art Submissions Beaded VaseBrandy Lee Bartercover The StrayBrandy Lee Barterpage 10 RapidsKristy Van Amerongenpage 10 UntitledKristy Van Amerongenpage 13 UntitledKristy Van Amerongenpage 15 A Quiet RoadBrandy Lee Barterpage 19 X Marks the SpotBrandy Lee Barterpage 20 An Old FriendBrandy Lee Barterpage 25 The Vehicle Staffpage 27 Contributorspage 28https://thekeep.eiu.edu/vehicle/1085/thumbnail.jp
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