308,429 research outputs found

    Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′

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    First evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)

    A Tripartite Post-Recession Rebalancing

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    In this latest Advance & Rutgers Report, entitled “A Tripartite Post-Recession Rebalancing,” Dean James W. Hughes and Professor Joseph J. Seneca deliver an incisive assessment of the current market conditions and obstacles in the path of our economic recovery. They offer a statistical cautionary tale that the private and public sector need to hear and acknowledge in order for the economy to make continued progress.This report was published as Issue Paper Number 7, November 2011, in Advance & Rutgers Report

    [Report to Chief J. E. Curry, by an unknown author #1]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney

    [Report to Chief J. E. Curry, by an unknown author #2]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney

    A fuzzy approach for sequencing interrelated activities in a DSM

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    Production and manufacturing systems often involve a myriad of interrelated activities. How these activities are organised and scheduled has a significant effect on the success of a system. Recently, the Design Structure Matrix (DSM) has been regarded as an effective tool for modelling and scheduling interrelated activities. Based on fuzzy set theory, this study explicitly addresses the uncertain activity dependencies in our formulation and develops a mathematical model for sequencing interrelated activities in a DSM. Because of the complexity of the model, a new approach, which embeds an exact algorithm within a framework of a local search heuristic, is presented for solving large problem instances. Testing results demonstrate that relatively good solutions can be easily obtained by our approach, thereby providing managers with an effective tool for scheduling a large number of interrelated activities with uncertain dependencies. © 2012 Copyright Taylor and Francis Group, LLC.Abdelsalam HME, 2006, IEEE T ENG MANAGE, V53, P69, DOI 10.1109-TEM.2005.861805; Ahmadi R, 2001, EUR J OPER RES, V130, P539, DOI 10.1016-S0377-2217(99)00412-9; Banerjee A, 2007, IIE TRANS, V39, P453, DOI 10.1080-07408170601180510; Browning TR, 2001, IEEE T ENG MANAGE, V48, P292, DOI 10.1109-17.946528; Chen CH, 2004, INT J PROD RES, V42, P4623, DOI 10.1080-00207540410001721727; Chen SJ, 2003, COMPUT IND ENG, V44, P435, DOI 10.1016-S0360-8352(02)00230-9; Debels D, 2007, OPER RES, V55, P457, DOI 10.1287-opre.1060.0358; Dubois D., 2000, FUNDAMENTALS FUZZY S; Dubois D, 2003, EUR J OPER RES, V147, P231, DOI 10.1016-S0377-2217(02)00558-1; EPPINGER SD, 1994, RES ENG DES, V6, P1, DOI 10.1007-BF01588087; Eppinger SD, 2001, HARVARD BUS REV, V79, P149; Fortemps P, 1996, FUZZY SET SYST, V82, P319, DOI 10.1016-0165-0114(95)00273-1; Guschinskaya O, 2008, EUR J OPER RES, V189, P902, DOI 10.1016-j.ejor.2006.03.072; Karniel A, 2009, IEEE T ENG MANAGE, V56, P636, DOI 10.1109-TEM.2009.2032032; Karniel A, 2005, COMPUT AIDED DESIGN, V37, P399, DOI 10.1016-j.cad.2004.06.015; KUSIAK A, 1993, INT J PROD RES, V31, P753, DOI 10.1080-00207549308956755; Lancaster J, 2008, INT J PROD RES, V46, P5043, DOI 10.1080-00207540701324176; Li D., 2006, NONLINEAR INTEGER PR; Lin J, 2009, EUR J OPER RES, V196, P1158, DOI 10.1016-j.ejor.2008.05.030; Lin J, 2010, EUR J OPER RES, V201, P737, DOI 10.1016-j.ejor.2009.03.040; Lin J, 2008, EUR J OPER RES, V185, P378, DOI 10.1016-j.ejor.2006.12.022; Luh DB, 2009, CONCURRENT ENG-RES A, V17, P43, DOI 10.1177-1063293X09102249; McCulley C, 1996, STRUCT OPTIMIZATION, V12, P186, DOI 10.1007-BF01196956; Meier C, 2007, J MECH DESIGN, V129, P566, DOI 10.1115-1.2717224; Palpant M, 2004, ANN OPER RES, V131, P237, DOI 10.1023-B:ANOR.0000039521.26237.62; Qian YJ, 2011, IEEE T ENG MANAGE, V58, P688, DOI 10.1109-TEM.2011.2107558; Rowles C. M., 1999, THESIS MIT; Shaja AS, 2010, RES ENG DES, V21, P173, DOI 10.1007-s00163-009-0082-5; Smith RP, 1997, MANAGE SCI, V43, P1104, DOI 10.1287-mnsc.43.8.1104; Smith RP, 1998, CONCURRENT ENG-RES A, V6, P15, DOI 10.1177-1063293X9800600103; Steward D. V., 1981, IEEE T ENG MANAGE, V49, P428; Tang DB, 2010, ADV ENG INFORM, V24, P159, DOI 10.1016-j.aei.2009.08.005; Tang DB, 2000, COMPUT IND ENG, V38, P479, DOI 10.1016-S0360-8352(00)00059-0; Tang DB, 2009, CONCURRENT ENG-RES A, V17, P129, DOI 10.1177-1063293X09105348; YAGER RR, 1981, INFORM SCIENCES, V24, P143, DOI 10.1016-0020-0255(81)90017-7; Yassine A, 2003, CONCURRENT ENG-RES A, V11, P165, DOI 10.1177-106329303034503; Zimmermann H.-J., 1996, FUZZY SET THEORY ITS32

    Murder on the mountain: author talk with Peter J. Wosh

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    Author talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.

    Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV

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    The prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
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