917 research outputs found
Molecular recognition through divalent interactions with a self-assembled fibrillar network of a supramolecular organogel
The interaction of phenol derivatives with the self-assembled fibrillar network of two different
supramolecular gels has been studied. NMR relaxometry reveals the selective interaction of resorcinol
over other related molecules with a gel formed by the gelator 2 which contains terminal pyridine units.
No selectivity is observed for a related gelator that contains phenyl instead of pyridine moieties. The
selectivity observed by NMR experiments permits the selective suppression of the 1H NMR signals of
resorcinol. This behaviour is translated to macroscopic properties such as the thermal stability of the
gels. The observed selectivity together with X-ray diffraction data and molecular modelling suggest that
the gels formed by 2 present arrays of pyridine H-bond acceptor groups capable of selective multivalent
interaction with phenolic substrate
Estudio de los cambios en el diagnóstico y tratamiento de los melanomas primarios cutáneos durante la pandemia COVID-19
59 p.La pandemia COVID-19 ha supuesto un cese de la actividad presencial no urgente debido a la saturación del Sistema Nacional de Salud. La interrupción de la práctica clínica habitual, así como el temor de los pacientes a acudir a los centros sanitarios para evitar el contagio, son algunos de los factores que han podido influir en un retraso diagnóstico del melanoma, cuyo pronóstico depende de una detección y tratamiento precoz.
En este estudio observacional y longitudinal de cohortes retrospectivo, se estudian los cambios en el diagnóstico y tratamiento de los melanomas primarios cutáneos durante la pandemia y se evalúa su influencia en el pronóstico en términos del índice de Breslow (IB) y biopsia selectiva del ganglio centinela (BSGC).
Para ello, y tomando como punto de corte la fecha del inicio del confinamiento en España, se comparan los pacientes que han acudido a la consulta de Dermatología del HUPA con sospecha de melanoma durante dos periodos: el primero durante el año previo al confinamiento, y el segundo durante el año posterior.
La pandemia ha supuesto un empeoramiento en los factores pronósticos del melanoma, observándose una disminución del 31% en los melanomas in situ (p=0.002) y un aumento del IB (0.6 mm vs. 0.96 mm; p=>0.2). Se realizaron un mayor número de BSGC frente al primer período, sin hallar diferencias estadísticamente significativas.
Destaca el aumento del número de pacientes que acude por la urgencia y el inicio de la teledermatología. No ha habido aumento del tiempo de demora de los procedimientos quirúrgicos.The COVID-19 pandemic has meant a cessation of non-urgent face-to-face activity due to the saturation of the National Health System. The interruption of routine clinical practice, as well as the fear of patients to go to health centers to avoid contagion, are some of the factors that have been able to influence a delayed diagnosis of melanoma, whose prognosis depends on early detection and treatment.
This observational and longitudinal retrospective cohort study studies changes in the diagnosis and treatment of primary cutaneous melanomas during the pandemic and assesses their influence on prognosis in terms of Breslow index and sentinel node biopsy.
To do this, and taking as a cut-off point the date of the beginning of confinement in Spain, the patients who have come to the HUPA Dermatology consultation with suspected melanoma during two periods are compared: the first during the year prior to the confinement, and the second one during the following year.
The pandemic has led to a worsening of the prognostic factors of melanoma, with a 31% decrease in melanomas in situ (p=0.002) and an increase in Breslow index (0.6 mm vs. 0.96 mm; p=>0.2). A higher number of sentinel node biopsies were performed compared to the first period, without finding statistically significant differences.
The increase in the number of patients who come due to the urgency and the onset of teledermatology stands out. There has been no increase in the delay time of surgical procedures.Grado en Medicin
A Conceptual Framework to Manage Resilience and Increase Sustainability in the Supply Chain
[EN] The challenges of global economies foster supply chains to have to increase their processes of collaboration and dependence between their nodes, generating an increase in the level of vulnerability to possible impacts and interruptions in their operations that may affect their sustainability. This has developed an emerging area of interest in supply chain management, considering resilience management as a strategic capability of companies, and causing an increase in this area of research. Additionally, supply chains should deal with the three dimensions of sustainability (economic, environmental, and social dimensions) by incorporating the three types of objectives in their strategy. Thus, there is a need to integrate both resilience and sustainability in supply chain management to increase competitiveness. In this paper, a systematic literature review is undertaken to analyze resilience management and its connection to increase supply chain sustainability. In the review, 232 articles published from 2000 to February 2020 in peer-reviewed journals in the Scopus and ScienceDirect databases are analyzed, classified, and synthesized. With the results, this paper develops a conceptual framework that integrates the fundamental elements for analyzing, measuring, and managing resilience to increase sustainability in the supply chain. Finally, conclusions, limitations, and future research lines are exposed.This study was supported by the Valencian Government in Spain (Project AEST/2019/019).Zavala-Alcívar, A.; Verdecho Sáez, MJ.; Alfaro Saiz, JJ. (2020). A Conceptual Framework to Manage Resilience and Increase Sustainability in the Supply Chain. Sustainability. 12(16):1-38. https://doi.org/10.3390/su12166300S1381216Roberta Pereira, C., Christopher, M., & Lago Da Silva, A. (2014). Achieving supply chain resilience: the role of procurement. Supply Chain Management: An International Journal, 19(5/6), 626-642. doi:10.1108/scm-09-2013-0346Pettit, T. 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The impact of flexible environmental policy on maritime supply chain resilience. Transport Policy, 72, 116-128. doi:10.1016/j.tranpol.2018.09.020Mitra, K., Gudi, R. D., Patwardhan, S. C., & Sardar, G. (2009). Towards resilient supply chains: Uncertainty analysis using fuzzy mathematical programming. Chemical Engineering Research and Design, 87(7), 967-981. doi:10.1016/j.cherd.2008.12.025Lücker, F., Seifert, R. W., & Biçer, I. (2018). Roles of inventory and reserve capacity in mitigating supply chain disruption risk. International Journal of Production Research, 57(4), 1238-1249. doi:10.1080/00207543.2018.15041
How to achieve dynamic and flexible performance management systems for collaborative processes
[EN] One of the main characteristics of successful collaborative networks is their ability to continuously reformulating their processes. The, they can quickly get adapted to environment needs and therefore define more competitive processes. One of biggest weaknesses of Performance Management Systems (PMS) when dealing with collaborative processes associated to collaborative networks, is their low degree of both dynamicity and flexibility to get adapted to the changes that such collaborative processes experiment. The main changes that can take place are, among others, small or large modifications of the own processes, entrance and/or exit of new participants in the process, incorporation and/or elimination of processes, changes in objectives and/or strategies of processes of some participant, or even of the whole collaborative network, etc. All this brings continuous modifications over the components that conform the PMS. Then, it is necessary to structure certain mechanisms that will provide with both dynamicity and flexibility to the PMS. Otherwise, these PMS will become obsolete in the short-time and will be not useful anymore. Further, these PMS will not measure properly performance and then they will become ineffective, becoming the source of troubles. Scientific literature shows that most of the works that deal with PMS dynamicity and flexibility are focused on intra-organizational contexts, leaving almost apart the collaborative networks ambit. This work analyses those aspects that prevent to the PMS to be dynamic and flexible when applied to manage the performance of collaborative networks. In addition, we discuss and analyse several mechanisms that should be incorporated into the PMS, making them more dynamic and flexible.Alfaro Saiz, JJ.; Verdecho Sáez, MJ.; Rodríguez Rodríguez, R. (2013). How to achieve dynamic and flexible performance management systems for collaborative processes. IFIP Advances in Information and Communication Technology. 408:639-647. doi:10.1007/978-3-642-40543-3_67S639647408Matopoulos, A., Vlachopoulou, M., Manthou, V., Manos, B.: A conceptual framework for supply chain collaboration: empirical evidence from the agri-food industry. Supply Chain Management: An International Journal 12(3), 177–186 (2007)Barrat, M.: Understanding the meaning of collaboration in the supply chain. Supply Chain Management: An International Journal 9(1), 30–42 (2004)Alfaro, J.J., Rodriguez-Rodriguez, R., Verdecho, M., Ortiz, A.: Business process interoperability and collaborative performance measurement. International Journal of Computer Integrated Manufacturing 22(9), 877–889 (2009)Franco, R.D., Ortiz, A.: Soporte a la ejecución de procesos de negocio extendidos para la planificación de la producció. In: Proceedings of the X Congreso de Ingeniería de Organización, Valencia, vol. I, pp. 255–262 (2006)Ghalayini, A., Noble, J.S., Crowe, T.J.: An integrated dynamic performance measurement system for improving manufacturing competitiveness. International Journal of Production Economics 48, 207–225 (1997)Waggoner, D., Neely, A.D., Kennerley, M.P.: The forces that shape organisational performance measurement systems: An interdisciplinary review. International Journal of Production Economics 60(61), 53–60 (1999)Bititci, U.S., Turner, T., Begemann, C.: Dynamics of performance measurement systems. International Journal of Operations and Production Management 20(6), 692–704 (2000)Kennerley, M., Neely, A.: Measuring performance in a changing business environment. International Journal of Operations & Production Management 23(2), 213–229 (2003)Kennerley, M., Neely, A., Adams, C.: Survival of the fittest: measuring performance in a changing business environment. Measuring Business Excellence 7(4), 37–43 (2003)Najmi, M., Fan, I., Rigas, J.: A framework to review performance measurement systems. Business Process Management Journal 11(2), 109–122 (2005)Salloum, M.: Towards dynamic performance measurement system: a framework for manufacturing organizations. Thesis, Mälardalen University, Västeras, Sweden (2011
A review of factors influencing collaborative relationships
[EN] Collaboration is a term commonly used to refer to a type of inter-organizational relationship. However, in real business assessments, many collaborative relationships fail due to the lack of understanding of the factors influencing collaboration sustainability. For this reason, enterprises, prior to engage to a collaborative relationship, need to understand further which the main factors influencing collaboration relationships are, how they are structured and how they interact so that decision makers that desire to engage in a collaborative relationship/network focus not only on improving performance indicators but also on the factors that influence the results of those performance indicators. The purpose of this paper is to present a critical literature review of factors influencing collaborative relationships in order to perform a comparative study of the works for identifying main strengths and gaps for future research.Verdecho Sáez, MJ.; Alfaro Saiz, JJ.; Rodríguez Rodríguez, R. (2011). A review of factors influencing collaborative relationships. IFIP Advances in Information and Communication Technology. 362:535-542. doi:10.1007/978-3-642-23330-2_58S535542362Camarinha-Matos, L.M., Afsarmanesh, H., Galeano, N., Molina, A.: Collaborative networked organizations - Concepts and practice in manufacturing enterprises. Computers & Industrial Engineering 57, 46–60 (2009)Simatupang, T.M., Wright, A.C., Sridharan, R.: Applying the theory of constraints to supply chain collaboration. Supply Chain Management: An International Journal 9(1), 57–70 (2004)Sabath, R.E., Fontanella, J.: The Unfulfilled Promise of Supply Chain Collaboration. Supply Chain Management Review (July/August 2002)Kampstra, R.P., Ashayeri, J., Gattorna, J.L.: Realities of supply chain collaboration. The International Journal of Logistics Management 17(3), 312–330 (2006)Supply Chain Management Review (SCMR) and Computer Sciences Corporation, CSC (2004);The second annual global survey of supply chain progress, www.csc.com/Busi, M., Bititci, U.S.: Collaborative performance management: present gaps and future research. International Journal of Productivity and Performance Management 55(1), 7–25 (2006)Lockamy, A., McCormack, K.: The development of a supply chain management process maturity model using the concepts of business process orientation. Supply Chain Management: An International Journal 9(4), 272–278 (2004)Lejeune, M.A., Yakova, N.: On characterizing the 4 C’s in supply chain management. Journal of Operations Management 23(1), 81–100 (2005)Fiske, A.P.: Relativity within Moose (“Mossi”) culture: four incommensurable models for social relationships. Ethos 18, 180–204 (1990)Danese, P.: Collaboration forms, information and communication technologies, and coordination mechanisms in CPFR. International Journal of Production Research 44, 3207–3226 (2006)Birnbirg, J.C.: Control in interfirm co-operative relationships. Journal of Management Studies 25(4), 421–428 (1998)Boddy, D., Macbeth, D., Wagner, B.: Implementing collaboration between organizations: an empirical study of supply chain partnering. Journal of Management Studies 37(7), 1003–1018 (2000)Handfield, R.B., Bechtel, C.: Trust, power, dependence, and economics: can SCM research borrow paradigms? International Journal of Integrated Supply Chain Management 1(1), 3–32 (2004)Wilson, D.T.: An integrated model of buyer-seller relationships. In: Working Paper, Institute for the Study of Business Markets. The Pennsylvania State University, State College (1995)Bowersox, D.J., Closs, D.J., Stank, T.P.: How to Master cross-enterprise Collaboration. Supply Chain Management Review (July/August 2003)Barratt, M.: Understanding the meaning of collaboration in the supply chain. Supply Chain Management: An International Journal 9(1), 30–42 (2004)Min, S., Roath, A.S., Daugherty, P.J., Genchev, S.E., Chen, H., Arndt, A.D.: Supply chain collaboration: what’s happening? The International Journal of Logistics Management 16(2), 237–256 (2005)Simatupang, T.M., Sridharan, R.: An integrative framework for supply chain collaboration. The International Journal of Logistics Management 16(2), 257–274 (2005)Burgess, K., Singh, P.: A proposed integrated framework for analysing supply chains. Supply Chain Management: An International Journal 11(4), 337–344 (2006)Gruat La Forme, F., Botta Genoulaz, V., Campagne, J.: A Framework to analyse Collaborative Performance. Computers in Industry 58, 687–697 (2005)Giannakis, M.: Performance Measurement of Supplier Relationships. Supply Chain Management; An International Journal 12(6), 400–411 (2007)Morgan, R.M., Hunt, S.D.: The Commitment-Trust Theory of Relationship Marketing. Journal of Marketing 58, 20–38 (1994)Mohr, J., Spekman, R.: Characteristics of partnership success: Partnership attributes, communication behavior, and conflict resolution techniques. Strategic Management Journal 15(2), 135–152 (1994)Zineldin, M., Jonsson, P.: An examination of the main factors affecting trust/commitment in supplier-dealer relationships: an empirical study of the Swedish wood industry. The TQM Magazine 12(4), 245–256 (2000)Coote, L.V., Forrest, E.J., Tam, T.W.: An investigation into commitment in non-Western industrial marketing relationship. Industrial Marketing Management 32, 595–604 (2003)Wu, W.T., Chiag, C.Y., Wu, Y.J., Tu, H.J.: The influencing factors of commitment and business integration on supply chain management. Industrial Management & Data Systems 104(4), 322–333 (2004)Kwon, I.K., Suh, T.: Trust, commitment and relationships in supply chain management: path analysis. Supply Chain Management: An International Journal 10(1), 26–33 (2005)Geyskens, I., Steemkamp, J.B., Scheer, L.K., Kumar, N.: The effects of trust and interdependence on relationship commitment: A trans-Atlantic study. International Journal of Research in Marketing 13, 303–317 (1996)Pimentel Claro, D., Borin de Oliviera Claro, P., Hagelaar, G.: Coordinating collaborative joint efforts with suppliers: the effects of trust, transaction specific investment and information network in the Dutch flower industry. Supply Chain Management: An International Journal 11(3), 216–224 (2006)Cheng, J.H., Yeh, C.H., Tu, C.W.: Trust and knowledge sharing in green supply chains. Supply Chain Management: An International Journal 13(4), 283–295 (2008)Matopoulos, A., Vlachopoulou, M., Manthou, V., Manos, B.: A conceptual framework for supply chain collaboration: empirical evidence from the agri-food industry. Supply Chain Management: An International Journal 12(3), 177–186 (2007)Handfield, R.B., Bechtel, C.: The role of trust and relationship structure in improving supply chain responsiveness. Industrial Marketing Management 31, 367–382 (2002
A review on intellectual capital concepts as a base for measuring intangible assets of collaborative networks
[EN] This work presents a revision of the main definition and significances of the term Intellectual Capital, as it is an important issue of study. Once the main scientific works related to Intellectual Capital are presented and their main contributions highlighted, this work shows how it has been attempted to measure the Intellectual Capital at both individual enterprises and collaborative networks, as a source of meaningful information to make decisions. The paper evidences the lack of works that have successfully dealt with measuring Intellectual Capital at the collaborative networks level, highlighting the main barriers and what a proper measuring framework should address at this level.Rodríguez Rodríguez, R.; Alfaro Saiz, JJ.; Verdecho Sáez, MJ. (2011). A review on intellectual capital concepts as a base for measuring intangible assets of collaborative networks. IFIP Advances in Information and Communication Technology. 362:41-47. doi:10.1007/978-3-642-23330-2_5S4147362Penrose, E.T.: The theory of the growth of the firm. John Wiley, New York (1959)Edvinsson, L., Malone, M.S.: IC: the Proven Way to Establish Your Company’s Real Value by Measuring Its Hidden Values. Piatkus, London (1997)Sveiby, K.E.: The New Organizational Wealth: Managing & Measuring Knowledge-Based Assets. Berrett-Koehler Publishers, Inc., San Francisco (1997)MERITUM Guidelines. Guidelines for Managing and Reporting on Intangibles, Madrid (2002)International Accounting Standards Board (IASB). Intangible Assets, International Accounting Standards No. 38 revised. IASB, London (2004)Marr, B.: Perspectives on IC: Multidisciplinary Insights into Management, Measurement, and Reporting. Elsevier, Boston (2005)Hall, R.: The strategic analysis of intangible resources. Strategic Management Journal 2, 135–137 (1992)Edvinsson, L., Sullivan, P.H.: Developing a model for managing intellectual capital. European Management Journal 14, 356–365 (1996)Brooking, A.: IC: Core Assets for the Third Millennium Enterprise. Thompson Business Press, London (1996)Roos, J., Roos, G., Dragonetti, N.C., Edvinsson, L.: IC: Navigating the New Business Landscape. Macmillan, London (1997)Stewart, T.A.: IC: The New Wealth of Organisations. Doubleday/Currency, New York (1997)Bontis, N., Dragonetti, N.C., Jacobson, K., Roos, G.: The knowledge toolbox: a review of the tools available to measure and manage intangible resources. European Management Journal 17, 391–402 (1999)Kannan, G., Aulbur, W.G.: IC: Measurement effectiveness. Journal of IC 5, 389–413 (2004)Nordika Project. Measuring and Reporting IC: Experiences, Issues, and Prospects. OECD, Paris (2002)Kaplan, R.S., Norton, D.P.: The Balanced Scorecard – Measures that Drive Performance. Harvard Business Review, 71–79 (January/February 1992)Lynch, R.L., Cross, K.F.: Measure Up! The Essential Guide to Measuring Business Performance. Mandarin, London (1991)Kaplan, R.S., Norton, D.P.: Measuring the Strategic Readiness of Intangible Assets. Harvard Business Review 82, 167–176 (2004)Alfaro Saiz, J.J., Rodriguez-Rodriguez, R., Ortiz Bas, A., Verdecho, M.J.: An information architecture for a performance management framework by collaborating SMEs. Computers in Industry 61, 676–685 (2010)Busi, M., Bititci, U.S.: Collaborative performance management: present gaps and future research. International Journal of Productivity and Performance Management 55, 7–25 (2006)Angerhofer, B.J., Angelides, M.C.: A model and a performance measurement system for collaborative supply chains. Decision Support Systems 42, 283–301 (2006)Gaiardelli, P., Saccani, N., Songini, L.: Performance measurement of the after-sales service network – Evidence from the automotive industry. Computers in Industry 58, 698–708 (2007)Gruat, F.A., La Forme, V., Campagne, J.P.: A Framework to analyse Collaborative Performance. Computers in Industry 58, 687–697 (2007
Performance management in collaborative networks: difficulties and barriers
[EN] Global competitiveness obliges to enterprises to collaborate in many processes such as new product and services development in order to shorten the lifecycle, development and commercialization. Therefore, the competence has drifted from an individual focus to a supply chain management one and, from some years, to a collaborative enterprises network approach. It is common to find frameworks for measuring/managing the performance within extended enterprises, supply chains, virtual enterprises, etc. However, few authors deal with a higher level: the collaborative networks one. This concept of enterprises management set up bigger difficulties regarding not only from a conceptual and structural point of view but also considering both the design and posterior development of systems capable of managing the performance achieved in this type of organizations. This work describes both the main difficulties and barriers when trying to apply performance management concepts to collaborative networks. In this sense, it is highlighted the weaknesses of the existing intra-organizational frameworks that cannot be projected, as they are conceived, to manage performance within collaborative networks.Alfaro Saiz, JJ.; Rodríguez Rodríguez, R.; Verdecho Sáez, MJ. (2011). Performance management in collaborative networks: difficulties and barriers. IFIP Advances in Information and Communication Technology. 362:133-139. doi:10.1007/978-3-642-23330-2_15S133139362Hausman, W.H.: Supply chain performance metrics. The practice of supply chain management: Where theory and application converge. Kluwer Academic Publishers, Dordrecht (2003)Coughlan, P., Coughlan, D.: Action research: action research for operations management. International Journal of Operation and Productions Management 22(2), 220–240 (2002)Kaplan, R.S., Norton, D.P.: The balanced scorecard. Measures that drive performance. Harvard Business Review, 71–79 (January/February 1992)Bourne, M.: Designing and implementing a balanced performance measurement system. Control - Official Journal of the Institute of Operations Management, 21–24 (July/August 1999)Neely, A., Adams, C.: Perspectives on Performance. The Performance Prism’ Web Site of Neely A (2001), www.som.cranfield.ac.uk/som/cbp/adn.htmHronec, S.M.: Vital Signs. Amacom, New York (1993)Bititci, U.S., Mendibil, K., Martinez, V., Albores, P.: Measuring and managing performance in extended enterprises. International Journal of Operations & Production Management 25(4), 333–353 (2005)Folan, P., Browne, J.: Development of an extended enterprise performance measurement system”. Production Planning & Control 16(6), 531–544 (2005)Gaiardelli, P., Saccani, N., Songini, L.: Performance measurement systems in the after-sales service: an integrated framework. International Journal of Business Performance Management 9(2), 145–171 (2007)Alfaro, J.J., Ortiz, A., Rodríguez, R.: Performance measurement system for Enterprise Networks. International Journal of Productivity and Performance Management 56(4), 305–334 (2007)Romero, D., Galeano, N., Molina, A.: A conceptual Model for Virtual Breeding Environments Value System. In: Camarinha-Matos, L., Afsarmanesh, H., Novais, P., Analide, C. (eds.) Establishing the Foundation of Collaborative Networks. Springer, Heidelberg (2007)Msanjila, S.S., Afsarmanesh, H.: Trust analysis and assessment in virtual organization breeding environments. International Journal of Production Research 46(5), 1253–1295 (2008)Bititci, U., Turner, T., Mackay, D., Kearney, D., Parung, J., Walters, D.: Managing synergy in collaborative enterprises. Production Planning & Control 18(6), 454–465 (2007)Chalmeta, R., Grangel, R.: Performance Measurement Systems for Virtual Enterprise Integration. International Journal of Computer Integrated Manufacturing 18(1), 73–84 (2005)Francisco, R.D., Azevedo, A.: Dynamic Performance Management In Business Networks Environment. In: Digital Enterprise Technology. Springer, US (2007)Busi, M., Bititci, U.S.: Collaborative performance management: Present gaps and future research. International Journal of Productivity and Performance Management 55(1), 7–25 (2006)Rodriguez, R., Ortiz, A., Alfaro, J.: Fostering collaborative meta-value chain practices. International Journal of Computer Integrated Manufacturing 22(5), 385–394 (2009)Rodriguez, R.R., Gomez, P., Franco, D., Ortiz, A.: Establishing and keeping inter-organisational collaboration: Some lessons learned. International Federation for Information Processing 1, 214–222 (2007)Leseure, M., Shaw, N., Chapman, G.: Performance measurement in organisational networks: an exploratory case study. International Journal of Business Performance Management 3(1), 30–46 (2001
Armeria castrovalnerana sp. nov., un nuevo taxon de Armeria gr. alpina en el macizo del Castro Valnera (Cordillera Cantábrica, Burgos)
Se describe una nueva especie del género Armeria (Plumbaginaceae)
recolectada en el macizo del Castro Valnera (extremo oriental de la Cordillera Cantábrica).
Se ha detectado una única población con no más de 190 individuos, en condiciones
de extremo aislamiento geográfico y ecológico. La evolución reticular característica
del género, que con frecuencia llega a producir microespecies de área muy reducida,
aconseja que se tomen medidas de protección que aseguren su supervivencia
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