13 research outputs found
Controversial curves of the economy: an up-to-date investigation of long-waves
No full textThe question of the validity of the “so called” Kondratieff’s theory of long waves has been a well-known controversial issue among historians, economic, social and political science scholars. In this work, the author analyses its consistency and cycles general framework investigating both original Kondratieff’s data (never processed by harmonic analysis in their whole dataset) and the latest and longest available economic time-series. Fixing the boundaries of statistical analysis, hence, the main purpose is to furnish an up-to-date empirical contribution in exploring the conceptual cycles hypothesis by recur¬ring to dedicated quantitative techniques applied to strictly economic datasets
Empirical analysis of the environmental and energy policies in some developing countries. The cases of Brazil, China and India
No full textThis paper proposes an empirical analysis concerning the environmental and energy policies of some important developing countries
(Brazil, China and India) today present in the international scenario with very different features than in the past. The research is
carried out using two of the most important macroeconomic indicators several times proposed in the field of policy analysis: emissionintensity
ratio and energy-intensity ratio. Moreover, the emission-intensity ratio is used in order to verify the empirical existence of the
so-called ‘‘Environmental Kuznets Curve’’ for the three countries. For what concerns this last point, final results do not correspond
closely to the theoretical strict formulations hypothesised in the classical Environmental Kuznets Curve model.
This paper follows (completing and concluding) the previous one carried out by the same author for some industrialised countries.
After a brief, but ineluctable, premise considering the theoretical basic assumptions to define the question and regarding general
statements, the specific cases are analysed. Main findings show that resulting trends in these developing countries are different and,
furthermore, they differ from those already observed in industrialised ones
PROJECT REVERSIBILITY MEASUREMENT TO MANAGE “ADOPTION-WAITING” DECISIONS
No full textRapid technological change is ever more characterizing today’s markets and business decisions. Such a situation is to afford with complex tools not always available to all firms. This holds true, especially as far as Small and Medium Enterprises (SMEs) are concerned. Traditional and consolidated techniques are based on financial methods and tend to consider projects and investments as “objects” distinct from the organizations undertaking them. Furthermore, on the practical side, such formal and elegant tools encounter many difficulties in the various implementation steps due to natural en¬vironments where their methodological origin is rooted. Considering these constraints, we propose a simple algorithm to analyze, model and quantify “adoption-waiting” decisions to integrate and support traditional methods. The model -very recently published in project management literature as a general tool by the author also with an application real case- is substantially based on widespread and well-known accounting measures. This aspect allows an easy adoption and implementation by any kind of organization in order to tailor investment decisions to its own situation. The aim is pursued by the calculation of a firm’s specific reversibility rate able to improve effectiveness of planning proces¬ses within project cost management knowledge area
Production, Activation and CO2 Uptake Capacity of a Carbonaceous Microporous Material from Palm Oil Residues
No full textWhile Malaysia produces about half of the world’s palm oil and is the largest producer and exporter worldwide, oil palm industries generate large amounts of lignocellulosic biomass waste as a sub-product with no economic market value other than feedstock for energy valorisation. With the aim to increase the sustainability of the sector, in this work we prepare new materials for CO2 capture from palm oil residues (empty fruit bunches and kernels). The biochar is obtained through the carbonisation of the residues and is physically and chemically activated to produce porous materials. The resulting microporous samples have similar properties to other commercial activated carbons, with BET surfaces in the 320–880 m2/g range and pore volumes of 0.1–0.3 cm3·g−1. The CO2 uptake at room temperature for physically activated biochar (AC) was 2.4–3.6 mmolCO2/gAC, whereas the average CO2 uptake for chemically activated biochar was 3.36–3.80 mmolCO2/gAC. The amount of CO2 adsorbed decreased at the highest temperature, as expected due to the exothermic nature of adsorption. These findings confirm the high potential of palm oil tree residues as sustainable materials for CO2 capture
Molecular Dynamics Simulation of the Interactions between Carbon Dioxide and a Natural-Based Carbonaceous Microporous Material
No full textPeer reviewe
Effectiveness of Textile Reinforced Mortar (TRM) materials for the repair of full-scale timbrel masonry cross vaults
No full text[EN] This paper presents the experimental results obtained from tests on two masonry vaults reinforced by Textile Reinforced Mortar (TRM) materials subjected to monotonic and cyclic vertical settlements in one of their sup-ports. Two full-scale square masonry timbrel vaults were built in one of ICITECH's laboratories at the Universitat Politecnica de Valencia (Valencia, Spain) using the traditional Catalan layered-construction technique, with various layers of clay tiles arranged in two perpendicular masonry textures joined by lime and cement mortar joints. Due to their peculiar geometric and mechanical features, i.e. their high slenderness ratio, low tensile strength and high material heterogeneity, these structures are especially prone to damage from high-risk events such as soil settlement or seismic excitation. To evaluate their response to vertical support displacements, both vaults were pre-damaged by either vertical monotonic or cyclic settlements. They were then strengthened by a radial TRM strengthening configuration and re-tested until failure. A complex network of traditional and optical sensors was used to monitor displacements, deformation and the development of the cracking mechanism under both settlement conditions. The results obtained show that TRM materials can be used to effectively repair severely damaged masonry timbrel vaults, helping to partially restore the initial elastic stiffness, as well as doubling the vaults' elastic phase and ultimate displacements. In addition, TRM materials did not alter the stiffness degradation trend, although they had a strong effect on peak reaction degradation and failure modes. This investigation represents a valuable and unique source of information about the efficacy of TRM materials to repair full-scale pre-damaged masonry timbrel vaults.The authors wish to express their gratitude to the Spanish Ministry of Economy, Industry and Competitiveness for the funding provided through Project BIA 2014-59036-R, and also to LIC-Levantina Ingenieria y Construccion and the Grupo Mapei for their invaluable assistance. The first author (Elisa Bertolesi) would like to thank the Universitat Politecnica de Valencia for funding received for her postdoctoral grant (PAID-10-17).Bertolesi, E.; Torres Górriz, B.; Adam, JM.; Calderón García, PA.; Moragues, JJ. (2020). Effectiveness of Textile Reinforced Mortar (TRM) materials for the repair of full-scale timbrel masonry cross vaults. Engineering Structures. 220:1-15. https://doi.org/10.1016/j.engstruct.2020.110978S115220Torres, B., Bertolesi, E., Moragues, J. J., Calderón, P. A., & Adam, J. M. (2019). Experimental investigation of a full-scale timbrel masonry cross vault subjected to vertical settlement. Construction and Building Materials, 221, 421-432. doi:10.1016/j.conbuildmat.2019.06.015Torres, B., Bertolesi, E., Calderón, P. A., Moragues, J. J., & Adam, J. M. (2019). A full-scale timbrel cross vault subjected to vertical cyclical displacements in one of its supports. Engineering Structures, 183, 791-804. doi:10.1016/j.engstruct.2019.01.054Kouris, L. A. S., & Triantafillou, T. C. (2018). State-of-the-art on strengthening of masonry structures with textile reinforced mortar (TRM). Construction and Building Materials, 188, 1221-1233. doi:10.1016/j.conbuildmat.2018.08.039Del Zoppo, M., Di Ludovico, M., Balsamo, A., & Prota, A. (2019). In-plane shear capacity of tuff masonry walls with traditional and innovative Composite Reinforced Mortars (CRM). Construction and Building Materials, 210, 289-300. doi:10.1016/j.conbuildmat.2019.03.133Carozzi, F. G., Bellini, A., D’Antino, T., de Felice, G., Focacci, F., Hojdys, Ł., … Poggi, C. (2017). Experimental investigation of tensile and bond properties of Carbon-FRCM composites for strengthening masonry elements. Composites Part B: Engineering, 128, 100-119. doi:10.1016/j.compositesb.2017.06.018Leone, M., Aiello, M. A., Balsamo, A., Carozzi, F. G., Ceroni, F., Corradi, M., … Saenger, D. (2017). Glass fabric reinforced cementitious matrix: Tensile properties and bond performance on masonry substrate. Composites Part B: Engineering, 127, 196-214. doi:10.1016/j.compositesb.2017.06.028Caggegi, C., Carozzi, F. G., De Santis, S., Fabbrocino, F., Focacci, F., Hojdys, Ł., … Zuccarino, L. (2017). Experimental analysis on tensile and bond properties of PBO and aramid fabric reinforced cementitious matrix for strengthening masonry structures. Composites Part B: Engineering, 127, 175-195. doi:10.1016/j.compositesb.2017.05.048Caggegi, C., Lanoye, E., Djama, K., Bassil, A., & Gabor, A. (2017). Tensile behaviour of a basalt TRM strengthening system: Influence of mortar and reinforcing textile ratios. Composites Part B: Engineering, 130, 90-102. doi:10.1016/j.compositesb.2017.07.027Ascione, L., de Felice, G., & De Santis, S. (2015). A qualification method for externally bonded Fibre Reinforced Cementitious Matrix (FRCM) strengthening systems. Composites Part B: Engineering, 78, 497-506. doi:10.1016/j.compositesb.2015.03.079Bertolesi, E., Carozzi, F. G., Milani, G., & Poggi, C. (2014). Numerical modeling of Fabric Reinforce Cementitious Matrix composites (FRCM) in tension. Construction and Building Materials, 70, 531-548. doi:10.1016/j.conbuildmat.2014.08.006Sneed, L. H., D’Antino, T., Carloni, C., & Pellegrino, C. (2015). A comparison of the bond behavior of PBO-FRCM composites determined by double-lap and single-lap shear tests. Cement and Concrete Composites, 64, 37-48. doi:10.1016/j.cemconcomp.2015.07.007Wang, X., Lam, C. C., & Iu, V. P. (2019). Comparison of different types of TRM composites for strengthening masonry panels. Construction and Building Materials, 219, 184-194. doi:10.1016/j.conbuildmat.2019.05.179Parisi, F., Iovinella, I., Balsamo, A., Augenti, N., & Prota, A. (2013). In-plane behaviour of tuff masonry strengthened with inorganic matrix–grid composites. Composites Part B: Engineering, 45(1), 1657-1666. doi:10.1016/j.compositesb.2012.09.068Faella, C., Martinelli, E., Nigro, E., & Paciello, S. (2010). Shear capacity of masonry walls externally strengthened by a cement-based composite material: An experimental campaign. Construction and Building Materials, 24(1), 84-93. doi:10.1016/j.conbuildmat.2009.08.019Augenti, N., Parisi, F., Prota, A., & Manfredi, G. (2011). In-Plane Lateral Response of a Full-Scale Masonry Subassemblage with and without an Inorganic Matrix-Grid Strengthening System. Journal of Composites for Construction, 15(4), 578-590. doi:10.1061/(asce)cc.1943-5614.0000193Garmendia, L., Larrinaga, P., San-Mateos, R., & San-José, J. T. (2015). Strengthening masonry vaults with organic and inorganic composites: An experimental approach. Materials & Design, 85, 102-114. doi:10.1016/j.matdes.2015.06.150Ismail, N., & Ingham, J. M. (2016). In-plane and out-of-plane testing of unreinforced masonry walls strengthened using polymer textile reinforced mortar. Engineering Structures, 118, 167-177. doi:10.1016/j.engstruct.2016.03.041Kariou, F. A., Triantafyllou, S. P., Bournas, D. A., & Koutas, L. N. (2018). Out-of-plane response of masonry walls strengthened using textile-mortar system. Construction and Building Materials, 165, 769-781. doi:10.1016/j.conbuildmat.2018.01.026D’Ambra, C., Lignola, G. P., Prota, A., Sacco, E., & Fabbrocino, F. (2018). Experimental performance of FRCM retrofit on out-of-plane behaviour of clay brick walls. Composites Part B: Engineering, 148, 198-206. doi:10.1016/j.compositesb.2018.04.062Kariou, F. A., Triantafyllou, S. P., & Bournas, D. A. (2019). TRM strengthening of masonry arches: An experimental investigation on the effect of strengthening layout and textile fibre material. Composites Part B: Engineering, 173, 106765. doi:10.1016/j.compositesb.2019.04.026Giamundo, V., Lignola, G. P., Maddaloni, G., Balsamo, A., Prota, A., & Manfredi, G. (2015). Experimental investigation of the seismic performances of IMG reinforcement on curved masonry elements. Composites Part B: Engineering, 70, 53-63. doi:10.1016/j.compositesb.2014.10.039Garmendia, L., San-José, J. T., García, D., & Larrinaga, P. (2011). Rehabilitation of masonry arches with compatible advanced composite material. Construction and Building Materials, 25(12), 4374-4385. doi:10.1016/j.conbuildmat.2011.03.065Alecci, V., Misseri, G., Rovero, L., Stipo, G., De Stefano, M., Feo, L., & Luciano, R. (2016). Experimental investigation on masonry arches strengthened with PBO-FRCM composite. Composites Part B: Engineering, 100, 228-239. doi:10.1016/j.compositesb.2016.05.063Bertolesi, E., Adam, J. M., Rinaudo, P., & Calderón, P. A. (2019). Research and practice on masonry cross vaults – A review. Engineering Structures, 180, 67-88. doi:10.1016/j.engstruct.2018.10.085Angelillo, M. (2015). Static analysis of a Guastavino helical stair as a layered masonry shell. Composite Structures, 119, 298-304. doi:10.1016/j.compstruct.2014.09.007Maddaloni, G., Di Ludovico, M., Balsamo, A., Maddaloni, G., & Prota, A. (2018). Dynamic assessment of innovative retrofit techniques for masonry buildings. Composites Part B: Engineering, 147, 147-161. doi:10.1016/j.compositesb.2018.04.038Parisi, F., & Augenti, N. (2013). Earthquake damages to cultural heritage constructions and simplified assessment of artworks. Engineering Failure Analysis, 34, 735-760. doi:10.1016/j.engfailanal.2013.01.005Augenti, N., & Parisi, F. (2010). Learning from Construction Failures due to the 2009 L’Aquila, Italy, Earthquake. Journal of Performance of Constructed Facilities, 24(6), 536-555. doi:10.1061/(asce)cf.1943-5509.0000122D’Altri, A. M., Castellazzi, G., de Miranda, S., & Tralli, A. (2017). Seismic-induced damage in historical masonry vaults: A case-study in the 2012 Emilia earthquake-stricken area. Journal of Building Engineering, 13, 224-243. doi:10.1016/j.jobe.2017.08.005Croci, G. (1998). The Basilica of St. Francis of Assisi after the September 1997 Earthquake. Structural Engineering International, 8(1), 56-58. doi:10.2749/101686698780489667Sáez Riquelme B, Iglesias Salón Valencianas S XVIII. Levantamiento gráfico, análisis geométrico y constructivo, patología común. (Ph.D thesis). Departamento de Sistemas Industriales y Diseño. Universitat Jaume I, Castellón (Spain), 2013. n.d.https://www.mapei.com/it/en/products-and-solutions/products/detail/mapegrid-g-220.https://www.mapei.com/it/en/products-and-solutions/products/detail/planitop-hdm-restauro.Rotunno, T., Fagone, M., Bertolesi, E., Grande, E., & Milani, G. (2019). Curved masonry pillars reinforced with anchored CFRP sheets: An experimental analysis. Composites Part B: Engineering, 174, 107008. doi:10.1016/j.compositesb.2019.10700
Measurement of energetic single-photon production at LEP
No full textGeneral rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. PHYSICS LETTERS 6 Physics Letters B 346 ( 1995) 190-198 Measurement of energetic single-photon production at LEP Abstract We describe the sample of energetic single-photon events (E, > 15 GeV) collected by L3 in the 1991-1993 LEP runs. The event distributions agree with expectations from the Standard Model. The data are used to constrain the ZZy coupling and to set an upper limit of 4.1 x 10-6p~ (90% CL.) on the the magnetic moment of the T neutrino
UvA-DARE (Digital Academic Repository) Link to publication Citation for published version (APA): Inclusive search for the charmless radiative decay of the b-quark (b L3 Collaboration
No full textGeneral rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Download date: 29 Jun 2019 Physics Letters B 317 ( 1993 ) We report on the search for the electromagnetic penguin decay b --* s7 at v~ ~ mz. We find no evidence for a signal and place an upper limit on the decay rate Br(b ~ s~,) < 1.2 × 10 -3 at 90% C.L
UvA-DARE (Digital Academic Repository) Determination of the effective electroweak mixing angle from Z decays L3 Collaboration
No full textGeneral rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. The effective electroweak mixing angle sin 20w is measured from the production and decay of the Z boson in e+e -interactions. The data sample corresponds to an integrated luminosity of 18 pb-l with about 420 000 hadronic and 40 000 leptonic Z decays. The mixing angle sin 20w is determined from several independent measurements: the leptonic and hadronic cross sections, the forward-backward asymmetries of charged leptons and b-quarks, and the z-polarization. The results are found to be in good agreement with each other. The value of sin 20w from a fit to the asymmetries in a model independent method is 0.2321-4-0.0021 and from a global fit to the data in the Standard Model framework is 0.2328+0.0013
Measurement of inclusive eta production in hadronic decays of the Z0
No full textGeneral rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Download date: 29 Jun 2019 Physics Letters B 286 (1992) We present a study of the inclusive ~/ production based on 300000 hadronic Z ° decays. The measured inclusive momentum distribution can be reproduced by parton shower Monte Carlo programs and also by an analytical QCD calculation. Comparing our results with low energy e+e -data, we find that QCD describes both the shape and the energy evolution of the r/ spectrum. The comparison of q production rates in quark-and gluon-enriched jet samples does not show statistically significant evidence for more abundant production of q mesons in gluon fragmentation. l Deceased. 2 Supported by the German Forschung und Technologie. Bundesministerium f'ti
