981 research outputs found
Soft spin correlations in final-state parton showers
We introduce a simple procedure that resolves the long-standing question of
how to account for single-logarithmic spin-correlation effects in parton
showers not just in the collinear limit, but also in the soft wide-angle limit,
at leading colour. We discuss its implementation in the context of the
PanScales family of parton showers, where it complements our earlier treatment
of the purely collinear spin correlations. Comparisons to fixed-order matrix
elements help validate our approach up to third order in the strong coupling,
and an appendix demonstrates the small size of residual subleading-colour
effects. To help probe wide-angle soft spin correlation effects, we introduce a
new declustering-based non-global spin-sensitive observable, the first of its
kind. Our showers provide a reference for its single-logarithmic resummation.
The work in this paper represents the last step required for final-state
massless showers to satisfy the broad PanScales next-to-leading logarithmic
accuracy goals.Comment: 26 pages, 12 figure
A parton shower with higher-logarithmic accuracy for soft emissions
The accuracy of parton-shower simulations is often a limiting factor in the
interpretation of data from high-energy colliders. We present the first
formulation of parton showers with accuracy one order beyond state-of-the-art
next-to-leading logarithms, for classes of observable that are dominantly
sensitive to low-energy (soft) emissions, specifically non-global observables
and subjet multiplicities. This represents a major step towards general
next-to-next-to-leading logarithmic accuracy for parton showers.Comment: 6 pages, 4 figures + supplemental material (+ 5 pages, 3 figures
Accuracy of self-reported height measurements in parents and its effect on mid-parental target height calculation
BACKGROUND: Clinical determination of mid-parental height is an important part of the assessment of a child's growth, however our clinical impression has been that parents cannot be relied upon to accurately report their own heights. Therefore, we conducted this study to assess the accuracy of parental height self-reporting and its effect on calculated mid-parental target height for children presenting to a pediatric endocrinology office. METHODS: All parents bringing their children for an initial evaluation to a pediatric endocrinology clinic over a period of nine months were questioned and then measured by a pediatric endocrinologist. Parents were blinded to the study. Mid-parental target heights, based on reported and actual height were compared. RESULTS: There were 241 families: 98 fathers and 217 mothers in our study. Mean measured paternal height was 173.2 cm, self reported 174.9 cm (p < 0.0001), partner reported 177 cm (p = 0.0004). Only 50% of fathers and 58% of mothers reported their height within ± 2 cm of their measured height, while 15% of fathers and 12% of mothers were inaccurate by more than 4 cm. Mean measured maternal height was 160.6 cm, self-reported 161.1 cm (NS), partner reported 161.7 cm (NS). Inaccuracy of height self-report had a small but significant effect on the mean MPTH (0.4 cm, p = 0.045). Analysis showed that only 70% of MPTH calculated by reported heights fell within ± 2 cm of MPTH calculated using measured heights, 24% being in ± 2–4 cm range, and 6% were inaccurate by more than 4 cm. CONCLUSION: There is a significant difference in paternal measured versus reported heights with an overall trend for fathers to overestimate their own height. A large subset of parents makes a substantial error in their height self-report, which leads to erroneous MPTH. Inaccuracy is even greater when one parent reports the other parent's height. When a child's growth is in question, measured rather than reported parental heights should be obtained
Assessing impacts of agricultural water interventions in the Kothapally watershed, Southern India
The paper describes a hydrological model for agricultural water intervention in a community watershed at Kothapally in India,
developed through integrated management and a consortium approach. The impacts of various soil and water management
interventions in the watershed are compared to no-intervention during a 30-year simulation period by application of the
calibrated and validated ARCSWAT 2005 (Version 2.1.4a) modelling tool. Kothapally receives, on average, 800 mm rainfall
in the monsoon period. 72% of total rainfall is converted as evaporation and transpiration (ET), 20% is stored by groundwater
aquifer, and 8% exported as outflow from the watershed boundary in current water interventions. ET, groundwater recharge
and outflow under no-intervention conditions are found to be 64, 9, and 19%, respectively. Check dams helped in storing water
for groundwater recharge, which can be used for irrigation, as well minimising soil loss. In situ water management practices
improved the infiltration capacity and water holding capacity of the soil, which resulted in increased water availability by
10–30% and better crop yields compared to no-intervention. Water outflows from the developed watershed were more than
halved compared to no-intervention, indicating potentially large negative downstream impacts if these systems were to be
implemented on a larger scale. On the other hand, in the watershed development program, sediment loads to the streams
were less than one-tenth. It can be concluded that the hydrological impacts of large-scale implementation of agricultural water
interventions are significant. They result in improved rain-fed agriculture and improved productivity and livelihood of farmers
in upland areas while also addressing the issues of poverty, equity, and gender in watersheds. There is a need for case-specific
studies of such hydrological impacts along with other impacts in terms of equity, gender, sustainability, and development at
the mesoscale
Prospectus, March 22, 1984
BARKSTALL TALKS ABOUT DISCRIMINATION; News Digest; This is Karyn\u27s chance: and nothing will stop her!!; Scream and run--best self defense; PC Happenings: Workshop for radiologic technologists, SIU counselor at Parkland, Parkland play to open; Fear, anger, guilt and confusion: Common feelings after rape; StuGo conducting survey; 1984 motorcycle courses; Fall Registration; Did You Know...; The changing face of Women\u27s Lib: Working with and through the system; \u27Harry and Son\u27 warm and touching......; Run--\u27Just for the health of it\u27; Parkland student helps disaster effort; School prayer debate continues; \u27Yes\u27 appears at Assembly Hall; Creative Corner...Especially for you!!: Rain, Window Watching, We begin our lives as tiny..., The sun\u27s golden rays..., Climbing the Mountain, We are alone in this world..., He was only joking..., Used Too, You can\u27t stop rock-\u27n-roll..., The prison of my mind..., I am too younf to feel so worn and tired..., Living hard and fast..., Don\u27t get me wrong..., I can never forget...; Champaign County in the middle of a tornado belt; Tornado prevention; Classifieds; YES concert proves to be big disappointment; Skating projects emotion; \u27Splash\u27 wildly funny entertainment; WILL hosts telecourse; Orioles to repeat; Class A results; Lady Cobras finish third; Cobras eliminated; 1984 Parkland College Baseball Roster; Wet grounds hamper softball; Chargers ready for the Hall; I.M. Newshttps://spark.parkland.edu/prospectus_1984/1028/thumbnail.jp
Prospectus, October 3, 1984
FEMINIST MIND SEEN AS ANSWER FOR WORLD PROBLEMS; PC Digest; Blood Drive successful; \u27Wager opens to rave reviews\u27; 7 senators elected; Staff Profile-Kathy Hubbard Entertainment editor; Reaching mountain top not always goal; Degree still important asset; PC Happenings; Small Business Workshop planned; EMT Workshop scheduled; Parenting programs at Parkland; Health Programs focus on smoking, fitness and skin; Circle K exists to help; Gold struck in Arthur; Responsibility for self is common difficulty; Parkland enrollment follows trend; Woods hosts sports show; Creative Corner...Especially for you!!; The Meaning of I; The Last Goodbye; Advice from the Dueodenum; Almost There; Freedom; Doom-but whose?; Too Big for Me; Lady; The Ballad of Sue and Joe; Love Lost; Climbing the Mountain; Photographer wins in national competition; Student Profile-Carol DeVoss-newly elected senator \u27I\u27d like to see more student participation.\u27 Approximately 200 out of about 8,500 voted; Classifieds; Why are women obsessed?; New shows begin; Campbell\u27s a singin\u27 country boy; September love; Lady Cobras concentrate, win two; Bowlers Pin; IM Volleyball; IM Basketball; IM Football; Cross Country action; Wisdom, age to determine \u2785 Cobras baseball success; Golf actionhttps://spark.parkland.edu/prospectus_1984/1010/thumbnail.jp
The first-year growth response to growth hormone treatment predicts the long-term prepubertal growth response in children
<p>Abstract</p> <p>Background</p> <p>Pretreatment auxological variables, such as birth size and parental heights, are important predictors of the growth response to GH treatment. For children with missing pretreatment data, published prediction models cannot be used.</p> <p>The objective was to construct and validate a prediction model for children with missing background data based on the observed first-year growth response to GH. The accuracy and reliability of the model should be comparable with our previously published prediction model relying on pretreatment data. The design used was mathematical curve fitting on observed growth response data from children treated with a GH dose of 33 μg/kg/d.</p> <p>Methods</p> <p>Growth response data from 162 prepubertal children born at term were used to construct the model; the group comprised of 19% girls, 80% GH-deficient and 23% born SGA. For validation, data from 205 other children fulfilling the same inclusion and treatment criteria as the model group were used. The model was also tested on data from children born prematurely, children from other continents and children receiving a GH dose of 67 μg/kg/d.</p> <p>Results</p> <p>The GH response curve was similar for all children, but with an individual amplitude. The curve SD score depends on an individual factor combining the effect of dose and growth, the 'Response Score', and time on treatment, making prediction possible when the first-year growth response is known. The prediction interval (± 2 SD<sub>res</sub>) was ± 0.34 SDS for the second treatment year growth response, corresponding to ± 1.2 cm for a 3-year-old child and ± 1.8 cm for a 7-year-old child. For the 1–4-year prediction, the SD<sub>res </sub>was 0.13 SDS/year and for the 1–7-year prediction it was 0.57 SDS (i.e. < 0.1 SDS/year).</p> <p>Conclusion</p> <p>The model based on the observed first-year growth response on GH is valid worldwide for the prediction of up to 7 years of prepubertal growth in children with GHD/ISS, born AGA/SGA and born preterm/term, and can be used as an aid in medical decision making.</p
Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies
This report summarises the physics opportunities for the study of Higgs
bosons and the dynamics of electroweak symmetry breaking at the 100 TeV pp
collider.Comment: 187 pages, 94 figures. Chapter 2 of the "Physics at the FCC-hh"
Repor
Opportunities to Increase Water Productivity in Agriculture with Special Reference to Africa and South Asia. Stockholm Environment Institute, Project Report - 2009
Our primary goal in this paper is to describe how improvements in water and land management can increase the productivity of water in agriculture, which, broadly defined, means getting more value or benefit from the volume of water used to produce crops, fish, forests and livestock (Kijne et al., 2003). We begin by reviewing water scarcity and water productivity at the global level. We then describe ten Key Messages regarding efforts to improve water productivity in agriculture, with emphasis on Africa and South Asia
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