55,955 research outputs found
New insights on accretion in supergiant fast X-ray transients from XMM-Newton and INTEGRAL observations of IGR J17544-2619
No full textXMM–Newton observations of the supergiant fast X-ray transient IGR J17544?2619 are reported and placed in the context of an analysis of archival INTEGRAL/IBIS data that provide a refined estimate of the orbital period at 4.9272?±?0.0004?d. A complete outburst history across the INTEGRAL mission is reported. Although the new XMM–Newton observations (each lasting ?15 ks) targeted the peak flux in the phase-folded hard X-ray light curve of IGR J17544?2619, no bright outbursts were observed, the source spending the majority of the exposure at intermediate luminosities of the order of several 1033?erg?s?1 (0.5–10 keV) and displaying only low level flickering activity. For the final portion of the exposure, the luminosity of IGR J17544?2619 dropped to ?4?×?1032?erg?s?1 (0.5–10 keV), comparable with the lowest luminosities ever detected from this source, despite the observations being taken near to periastron. We consider the possible orbital geometry of IGR J17544?2619 and the implications for the nature of the mass transfer and accretion mechanisms for both IGR J17544?2619 and the supergiant fast X-ray transients (SFXTs) population. We conclude that accretion under the ‘quasi-spherical accretion’ model provides a good description of the behaviour of IGR J17544?2619 and suggests an additional mechanism for generating outbursts based upon the mass accumulation rate in the hot shell (atmosphere) that forms around the neutron star under the quasi-spherical formulation. Hence, we hope to aid in explaining the varied outburst behaviours observed across the SFXT population with a consistent underlying physical model
Poorer Survival with Insulin Therapy at Discharge in Diabetic Patients with Acute Myocardial Infarction: The FAST-MI Registry
No full textThe role of insulin therapy after AMI is debated. We assessed 3-year survival in survivors of AMI with diabetes, according to the prescription of insulin at discharge. All patients were included in the FAST-MI registry
Analytical study of contents of LANL physics and cross-listed e-print archives, 1994-2002
No full textThe frontiers of physics and cross-listed e-print archives posted during the years 1994-2002 at http://www.arxiv.org/archives/physics web service of Los Alamos National Laboratory (LANL) are explored from 7770 submissions. E-print archives posted to top most six physics-cross-listed research categories besides physics (5390) are: Condensed matter (754), Quantum physics (279), Astrophysics (222), Chemical physics (129), High energy physics - Phenomenology (118), and High energy physics-Theory (100). Prominent contributors are B.G. Sidharth (India), V.V. Flambaum (Australia), Antonina N. Fedorova (Russia), and Michael G. Zeitlin (Russia). Most preferred journals for rechannelising e-print archives are Physical Review Letters, Physical Review A, Physical Review E, Nuclear Instruments and Methods A, and Journal of Chemical Physics
Business advice to fast growth small firms
No full textA small proportion of small and medium sized enterprises (SMEs) create most new employment in the sector (Storey et al., 1987). Thus UK Business Link’s remit to provide advice to small firms with the potential to grow should maximise the employment impact of small firm advice. Yet, the risks involved in fast growth and the perceived need for visionary leadership constrains advisors from proffering that advice. This research uses data from 29 transcribed semi-structured research interviews and a group interview of 10 business advisors in the UK’s West Midlands region collected in Autumn 1996 to Spring 1997. The interviewees respond to a prompt for advice for a firm contemplating fast growth. This research suggests that in the implementation stage strategy toward small firms is subtly altered. The research suggests that advisors tend to offer general advice and support to all firms, and focus toward support for all, rather than targeting, and support to help companies survive, rather than grow. Given the importance of these fast growing firms to local employment the findings suggest that present business advice might reduce insolvency rather than increase the number of fast growth firms
Ultra-fast escape of a deformable jet-propelled body
No full textIn this work a cephalopod-like deformable body that fills an internal cavity with fluid and expels it to propel an escape manoeuvre, while undergoing a drastic external shape change through shrinking, is shown to employ viscous as well as mainly inviscid hydrodynamic mechanisms to power an impressively fast start. First, we show that recovery of added-mass energy enables a shrinking rocket in a dense inviscid flow to achieve greater escape speed than an identical rocket in a vacuum. Next, we extend the shrinking body results of Weymouth & Triantafyllou (J. Fluid Mech., vol. 702, 2012, pp. 470–487) to three-dimensional bodies and show that three hydrodynamic mechanisms must be combined to achieve rapid escape performance in a viscous fluid: added-mass energy recovery; flow separation elimination; and an optimized energy storage and recovery. In particular, we show that the mechanism of separation elimination achieved through rapid body shrinking, coordinated with the mechanism of recovering the initially imparted added-mass energy, is critical to achieving a high escape speed. Hence a flexible, collapsing body can be vastly superior to a rigid-shell jet-propelled body
Distribuição física de produtos em uma empresa de fast food
No full textTCC (graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Engenharia de Transportes e Logística.O ramo alimentício de fast food vem crescendo e exigindo maior competitividade das empresas neste setor, as quais frequentemente buscam medidas que reduzam seus custos sem alterar a qualidade de seus produtos. As medidas logísticas apresentam bons resultados para este cenário e tem despertado o interesse de empresários e pesquisadores. O processo de distribuição de produtos, em especial a roteirização, é uma das áreas logísticas que tem se destacado, devido, principalmente, a sua alta representatividade em relação aos custos logísticos. Desta forma, o presente trabalho de conclusão de curso apresenta um estudo de caso sobre a distribuição de produtos alimentícios de fast food da empresa Capitão Gourmet, responsável por produzir e entregar os calzones da rede Mini Kalzone. O estudo compreende o entendimento do procedimento atual da distribuição dos produtos da empresa, para então propor um método quanto à definição das rotas de distribuição a serem utilizadas de modo a reduzir as distâncias totais percorridas e por consequência o custo gasto em combustível. Portanto, é desenvolvido um programa computacional implementado na linguagem C++, para a roteirização de uma frota de veículos heterogêneos utilizando ferramentas heurísticas e metaheurísticas, com o uso dos métodos da varredura e Simulated Annealing, respectivamente. Por fim, com o método proposto obtém-se uma queda média do custo com combustível de aproximadamente 22%, bem como uma redução média de 21,17% das distâncias totais percorridas, sendo 12,17% das reduções resultado médio do método varredura e 10,74% a média de melhora com a utilização do SA. Palavras-chave: Roteirização. Fast food. Método da Varredura. Simulated Annealing.The fast food branch has been growing up and requiring a higher competitivety from the companies on this field, which frequently look for ways to reduce their expenses without changing the quality of their products. The logistic ways have presented good results for this scenario and they have called the interrest of bussinessmen and researchers. The process of products spreading, especially the scripting, is one of logistic fields, which has called attention, because of mainly its high representativeness dealing to logistic expenses. This way, the present course conclusion paper presents a case study about the Capitão Gourmet fast food distribuition, responsible for producing and handling the calzones from Mini Kalzone net. The study shows the understanding of the updated procedure of the distribuition of the company products, and so to suggest a method regard to the definition of the distribution ways to be used in order to reduce the total distance done and so the expense paid in gasoline. Then, it´s been developed a computer program done on the C++ language in order to have a route of a bunch of homogenous cars using heuristic and mataheuristic tools, with the use of the Sweeping and Simulated Annealing methods, respectively. Finally, there's an average falling of the gasoline expense around 22%, as well as an average falling around 21,17% from the total distances done, being 12,17% from the reduction, an avarage result of the Sweeping method and 10,74 % the improvement average with the use of SA. Key words: Routing, Fast food, Sweeping Method, Simulated Annealing
Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata
No full textThe priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes
Nuclear theory and nuclear experiment e-print archives : Science Citation Index - based analysis
No full textThe paper is based upon a study on the citations in the Science Citation Index (1992-2002) to the e-print archives of Los Alamos National Laboratory on the subject categories 'nucl-th' (nuclear theory) and 'nucl-ex' (nuclear experiment). The trend of growth of e-print archives and citing pattern of e-print archives are studied. The paper has also identified the highly cited e-print archives and the highly citing journals. The study shows the growing use of e-print archives as the knowledge-generating system for fast communication of results and ideas, and their quick use
Risk factor analysis for fast track protocol failure
No full textBackground: The introduction of fast-track treatment procedures following cardiac surgery has significantly shortened hospitalisation times in intensive care units (ICU). Readmission to intensive care units is generally considered a negative quality criterion. The aim of this retrospective study is to statistically analyse risk factors and predictors for re-admission to the ICU after a fast-track patient management program.
Methods: 229 operated patients (67 ± 11 years, 75% male, BMI 27 ± 3, 6/2010-5/2011) with use of extracorporeal circulation (70 ± 31 min aortic crossclamping, CABG 62%) were selected for a preoperative fast-track procedure (transfer on the day of surgery to an intermediate care (IMC) unit, stable circulatory conditions, extubated). A uni- and multivariate analysis were performed to identify independent predictors for re-admission to the ICU.
Results: Over the 11-month study period, 36% of all preoperatively declared fast-track patients could not be transferred to an IMC unit on the day of surgery (n = 77) or had to be readmitted to the ICU after the first postoperative day (n = 4). Readmission or ICU stay signifies a dramatic worsening of the patient outcome (mortality 0/10%, mean hospital stay 10.3 ± 2.5/16.5 ± 16.3, mean transfusion rate 1.4 ± 1,7/5.3 ± 9.1). Predicators for failure of the fast-track procedure are a preoperative ASA class > 3, NYHA class > III and an operation time >267 min ± 74. The significant risk factors for a major postoperative event (= low cardiac output and/or mortality and/or renal failure and/or re-thoracotomy and/or septic shock and/or wound healing disturbances and/or stroke) are a poor EF (OR 2.7 CI 95% 0.98-7.6) and the described ICU readmission (OR 0.14 CI95% 0.05-0.36).
Conclusion: Re-admission to the ICU or failure to transfer patients to the IMC is associated with a high loss of patient outcome. The ASA > 3, NYHA class > 3 and operation time >267 minutes are independent predictors of fast track protocol failure
Measurement of the branching ratios psi'->e(+)e(-), psi'->J/psi pi pi, and psi'->J/psi eta RID C-5223-2009
No full textWe have observed exclusive decays of the psi' in an experiment where the psi' is formed in antiproton-proton annihilations. We report the branching ratios B(psi' --> e(+)e(-)) = (8.3 +/- 0.5(stat) +/- 0.7(syst)) x 10(-3), B(psi' --> J/psi pi(+)pi(-)) = 0.283 +/- 0.021(stat) +/- 0.020(syst), B(psi' --> J/psi pi(0) pi(0)) = 0.184 +/- 0.019(stat) +/- 0.013(syst), B(pi' --> J/psi eta) = 0.032 +/- 0.010(stat) +/- 0.002(syst)
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