| 1. |
- Abelev, Betty, et al.
(författare)
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Long-range angular correlations on the near and away side in p-Pb collisions at root S-NN=5.02 TeV
- 2013
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Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 719:1-3, s. 29-41
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Tidskriftsartikel (refereegranskat)abstract
- Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5 < P-T,P-assoc < P-T,P-trig < 4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and p(T) bins, and the widths show no significant evolution with event multiplicity or p(T). These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
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| 2. |
- Abelev, Betty, et al.
(författare)
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Measurement of prompt J/psi and beauty hadron production cross sections at mid-rapidity in pp collisions at root s=7 TeV
- 2012
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Ingår i: Journal of High Energy Physics. - 1029-8479. ; :11
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Tidskriftsartikel (refereegranskat)abstract
- The ALICE experiment at the LHC has studied J/psi production at mid-rapidity in pp collisions at root s = 7 TeV through its electron pair decay on a data sample corresponding to an integrated luminosity L-int = 5.6 nb(-1). The fraction of J/psi from the decay of long-lived beauty hadrons was determined for J/psi candidates with transverse momentum p(t) > 1,3 GeV/c and rapidity vertical bar y vertical bar < 0.9. The cross section for prompt J/psi mesons, i.e. directly produced J/psi and prompt decays of heavier charmonium states such as the psi(2S) and chi(c) resonances, is sigma(prompt J/psi) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 8.3 +/- 0.8(stat.) +/- 1.1 (syst.)(-1.4)(+1.5) (syst. pol.) mu b. The cross section for the production of b-hadrons decaying to J/psi with p(t) > 1.3 GeV/c and vertical bar y vertical bar < 0.9 is a sigma(J/psi <- hB) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 1.46 +/- 0.38 (stat.)(-0.32)(+0.26) (syst.) mu b. The results are compared to QCD model predictions. The shape of the p(t) and y distributions of b-quarks predicted by perturbative QCD model calculations are used to extrapolate the measured cross section to derive the b (b) over bar pair total cross section and d sigma/dy at mid-rapidity.
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| 3. |
- Abelev, Betty, et al.
(författare)
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Underlying Event measurements in pp collisions at root s=0.9 and 7 TeV with the ALICE experiment at the LHC
- 2012
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Ingår i: Journal of High Energy Physics. - 1029-8479. ; :7
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Tidskriftsartikel (refereegranskat)abstract
- We present measurements of Underlying Event observables in pp collisions at root s = 0 : 9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p(T),L-T in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p(T) thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p(T) threshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed p(T) in the Transverse region by about 10-30%.
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| 4. |
- Ekström, Thomas, et al.
(författare)
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A framework for case study research - highlighting the reviewers' perspectives
- 2009
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Ingår i: Proceedings of The 21st Annual Nofoma Conference, 11-12 June 2009 Jönköping Sweden. - 9789186345013 ; , s. 159-174
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Konferensbidrag (refereegranskat)abstract
- Purpose of this paper The purpose is twofold: to map the reviewers’ perspective of evaluation of case based logistics and supply chain management research; and to develop a framework with all criteria needed to design, conduct, and present rigorous case study research. This framework can be used by both researchers and reviewers. Design/methodology/approach An interview study is performed to establish how reviews currently are being conducted in logistics and supply chain management journals. A literature review in combination with a both divisive and agglomerate cluster analysis is applied to develop the framework. The framework is compared to the evaluation criteria provided by reviewers. Findings There is an expressed need for a more structured and systematic review process for case based articles. An established framework for evaluation of case based research does not exist. There is a lack of standardized terminology in the field. A comprehensive framework for case based research is developed and presented. Research limitations/implications The research is focused on case studies only. What is original/value of paper? This paper present both the reviewers perspective on case study evaluation and it provides a comprehensive framework for all steps of a rigorous case based research process including what aspects that should be included and recommendations for how and why certain aspects should be included.
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| 5. |
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| 6. |
- Marcucci, G., et al.
(författare)
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Conceptual model for breaking ripple effect and cycles within supply chain resilience
- 2022
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Ingår i: Supply Chain Forum. - : Informa UK Limited. - 1625-8312 .- 1624-6039. ; 23:3, s. 252-271
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Tidskriftsartikel (refereegranskat)abstract
- Business world has reached a complexity tipping point, increasing the risk of disruption consequences not to remain localised in a single company but to reverberate on the entire Supply Chain. Literature now pays great attention to studying this ripple effect, which can critically undermine resilience of the entire Supply Chain. This work further investigates ripple effect by analysing the presence of cycles among these chain reactions using Fuzzy Cognitive Maps. This methodology allows to link multidimensional and multidisciplinary concepts: by unveiling this information, managers and policymakers are provided with more details about the system behaviour. The research method exemplified uncovers the causal relationships among factors influencing Supply Chain Resilience, providing necessary insight to break or reinforce such connections. A case study of an automotive industry Supply Chain is presented to show the application of the proposed methodology into an operating context: 15 different cycles have been enumerated, explaining how connections among these factors ultimately impact Supply Chain Resilience.
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| 7. |
- Muerza, Victoria, et al.
(författare)
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Enabling the circular economy of bio-supply chains employing integrated biomass logistics centers- A multi-stage approach integrating supply and production activities
- 2023
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Ingår i: Journal of Cleaner Production. - : Elsevier BV. - 0959-6526 .- 1879-1786. ; 384
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Tidskriftsartikel (refereegranskat)abstract
- Studies in the agro-industry sector have shown the importance to evaluate the feasibility of an IBLC (a multi-product transformation plant). This paper develops a model to simulate the performance of an IBLC in Spain, using a combined approach: AHP, TOPSIS, and a hybrid simulation model. Results show that profits can be incremented by about 55.7% and environmental emissions of KgCO2e per tonne of bio-commodity produced, reduced by 24.2%. The scientific contribution covers the development of a simulation model that dynamically select suppliers based on a combination of social, environmental, and economic criteria. In addition, the model can be used to evaluate the economic and environmental feasibility of the IBLC by integrating the suppliers selection with the operations of a multi-product transformation plant.
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| 8. |
- Muerza, Victoria, et al.
(författare)
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Managing Biomass Supply Chains : The Importance of Strategic Leadership
- 2020
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Ingår i: Leadership Strategies for Global Supply Chain Management in Emerging Markets. - : IGI Global. ; , s. 1-27
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Bokkapitel (refereegranskat)abstract
- This chapter explores the feasibility and advantages of integrated biomass logistics centres (IBLCs). These are centres aiming to collect residues from farming activities and transform these into new intermediate bio-products. Operations in these IBLCs aim to achieve economies of scale through integration of resources and business lines, while creating technical and environmental advantages for firms and societies. The experience from one agro-industry case study in Spain (fodder production) highlights the importance of leadership roles to manage the newly created supply chains, through the identification of strategic objectives and the coordination of operational activities. Hence, the scope of this chapter is to review the concept of IBLCs under the lens of supply chain management leadership. Thereafter, it will discuss the potential to transfer the IBLC concept to emerging markets, with examples for African agricultural crops.
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| 9. |
- Muerza, Victoria, et al.
(författare)
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Sustainable Business Model Innovation for the Agroindustry
- 2018
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Ingår i: Innovation, the name of the game. ; , s. 1-12
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Konferensbidrag (refereegranskat)abstract
- Research about business models, business model innovation and sustainability in business model innovation in the agroindustry in general has received little attention. Nevertheless, in other sectors, models like cradle-tocradle and product stewardship have proven to be successful for ensuring the economic and environmental sustainability of industries. This paper aims to fill this gap by addressing the following research question: what value can cradleto-cradle and product stewardship create to integrated biomass logistics centers? For this, a systematic literature review based on the archetype on sustainable business models “create value from waste” provided by Bocken et al. (2014) was carried out. After the analysis process a total of 14 papers were selected and the “value proposition”, “value creation and delivery” and “value capture” in each business model was identified. The extracted knowledge from the analysis was used as a basis for the definition of a business model innovation in the agroindustry.
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| 10. |
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