Letteratura scientifica selezionata sul tema "Hemp lime concrete"
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Articoli di riviste sul tema "Hemp lime concrete":
1
Omeme Ada, A. M., A. D. Tran Le, H. Toifane, P. Tittelein, L. Zalewski, E. Antczak, O. Douzane e T. Langlet. "Hygrothermal performance of hemp lime concrete embedded with phase change materials for buildings". Journal of Physics: Conference Series 2069, n. 1 (1 novembre 2021): 012005. http://dx.doi.org/10.1088/1742-6596/2069/1/012005.
Abstract (sommario):
Abstract The use of biobased materials in building construction allows the reduction of fossil resource use and energy consumption. Among biobased materials, hemp lime concrete has been investigated in many studies highlighting its capacity to regulate interior relative humidity and its high insulation capacity. In order to design high-performance biobased concretes, a new hemp lime concrete combining the hygric regulation capacity of hemp lime concrete with the thermal regulation performance of phase change material was developed. This article focuses on the thermal and hygric performance of the new hemp lime concretes incorporating micro-capsulated phase change material (PCM) (named HL-PCM). Three hemp lime concretes that differ from formulation were developed and investigated. The thermal properties, moisture buffer values and its impact on interior relative humidity variation have been presented. Thanks to experimental works and numerical simulations, the results obtained showed that the thermal conductivity remain low, the heat capacity and thermal inertia increase considerably for hemp concrete with PCM, while the moisture buffering capacity remains excellent. Finally, numerical results showed that the used of hemp lime concrete (with and without PCM) reduce indoor relative humidity variation and improve indoor hygrothermal comfort.
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Horszczaruk, Elżbieta, Jarosław Strzałkowski, Anna Głowacka, Oliwia Paszkiewicz e Agata Markowska-Szczupak. "Investigation of Durability Properties for Lightweight Structural Concrete with Hemp Shives Instead of Aggregate". Applied Sciences 13, n. 14 (21 luglio 2023): 8447. http://dx.doi.org/10.3390/app13148447.
Abstract (sommario):
The paper presents the results of testing the performance of lightweight structural concrete containing hemp shives as an aggregate. It has been analysed how the higher binder content and use of the Portland cement affect the thermal and microbiological properties of the lightweight concrete. The aggregates of the plant origin and cement are incompatible because the plant chemical compounds, dissolved in water or an alkaline environment, inhibit cement hydration. To avoid this, mineralisation of the aggregates of plant origin is necessary. The most often used binder in hemp concrete is hydrated lime, a mineraliser. An addition of hydrated lime and sodium trisilicate was used for hemp shiv mineralisation in the tested materials with a cement binder. Concrete containing hemp shiv and cement binder, of which volume share in the concrete was at most 15%, was prepared as a reference concrete. In the remaining three concretes, the total content of the binder in relation to hemp shiv (by mass) was increased 2.5 times. It was shown that lime-binder hemp concrete offers a promising antimicrobial strategy, as it can inhibit bacterial and fungal growth on their surface with superior efficacy. The best results were obtained for tested concretes with the cement–lime binder regarding compressive strength; the average compressive strength was 9.56 MPa.
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Costantine, Georges, Chadi Maalouf, Tala Moussa e Guillaume Polidori. "Monitoring of a Hemp Lime External Building Insulation". E3S Web of Conferences 111 (2019): 03046. http://dx.doi.org/10.1051/e3sconf/201911103046.
Abstract (sommario):
In a context of promoting energy efficiency, building sector has undergone a notable evolution towards innovative construction insulation materials such as hemp concrete, in order to reduce buildings energy bills and environmental impact. Hemp-Concrete finds application as internal or external thermal insulator in wooden frame walls. In that context, a French building in Grand-Est region, employing Hemp-Concrete as an external insulator is selected and studied. An apartment is monitored for several months. Indoor temperatures, and relative humidities as well as external weather conditions are measured using sensors installed inside the apartment and a weather station placed at the building roof. Indoor comfort analysis shows satisfactory results according to ASHREA standards. Experimental approach is then coupled with a numerical validation at room scale using SPARK simulation tool. Investigations are conducted on indoor office air temperature and relative humidity. Results show a good agreement between numerical values and experimental measurements.
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Kore, Sudarshan D., e J. S. Sudarsan. "Hemp Concrete: A Sustainable Green Material for Conventional Concrete". Journal of Building Material Science 3, n. 2 (14 settembre 2021): 1. http://dx.doi.org/10.30564/jbms.v3i2.3189.
Abstract (sommario):
Concrete is one of the most important building material and day by day theutilization of concrete is increasing to meet the infrastructure developmentrequirement. On one hand it is unavoidable but some alternative to beexplored to reduce the global environmental impact caused by the concrete.To overcome this from the last decade the world is looking towards thefact of sustainability due to rapid industrialization. The growth in theconstruction industry increased the demand of concrete as constructionmaterial. This concrete produces significant amount of greenhouse emissionin the environment. There is a need to find an alternative solution tominimize the greenhouse emission emitted from the concrete manufacturingplant.Hempcrete is a building material prepared from hemp yarns, lime andwater. This composite material has several beneficial properties like lowin cost, easily available, thermal and acoustic insulation, low density andsustainable cause of no adverse impact of carbon footprint on production.In this study the properties and several benefits of the hempcrete werediscussed in detail.
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Wang, Lepeng, Hélène Lenormand, Hafida Zmamou e Nathalie Leblanc. "Effect of variability of hemp shiv on the setting of lime hemp concrete". Industrial Crops and Products 171 (novembre 2021): 113915. http://dx.doi.org/10.1016/j.indcrop.2021.113915.
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de Bruijn, Paulien, e Peter Johansson. "Moisture fixation and thermal properties of lime–hemp concrete". Construction and Building Materials 47 (ottobre 2013): 1235–42. http://dx.doi.org/10.1016/j.conbuildmat.2013.06.006.
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Faure, P., U. Peter, D. Lesueur e P. Coussot. "Water transfers within Hemp Lime Concrete followed by NMR". Cement and Concrete Research 42, n. 11 (novembre 2012): 1468–74. http://dx.doi.org/10.1016/j.cemconres.2012.07.007.
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Haik, R., G. Bar-Nes, A. Peled e I. A. Meir. "Alternative unfired binders as lime replacement in hemp concrete". Construction and Building Materials 241 (aprile 2020): 117981. http://dx.doi.org/10.1016/j.conbuildmat.2019.117981.
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de Bruijn, Paulien Brigitte, Knut-Håkan Jeppsson, Kenneth Sandin e Christer Nilsson. "Mechanical properties of lime–hemp concrete containing shives and fibres". Biosystems Engineering 103, n. 4 (agosto 2009): 474–79. http://dx.doi.org/10.1016/j.biosystemseng.2009.02.005.
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Chinh, Ngo Duc, e Nguyen Ngoc Tan. "Design of a new soil concrete as an eco-material: Effect of clay and hemp fibers proportions". Journal of Science and Technology in Civil Engineering (STCE) - NUCE 14, n. 1 (22 gennaio 2020): 77–88. http://dx.doi.org/10.31814/stce.nuce2020-14(1)-07.
Abstract (sommario):
This study presents a series of soil concrete mix that is made of excavated soils, cement, lime and hemp fibers. An experimental program was carried out on the testing samples of soil concrete with different proportions of clayey soil and hemp fibers. This program focus on several properties of soil concrete, such as compressive strength, autogenous shrinkage, drying shrinkage and water mass loss with time. The obtained results show that the compressive strength of soil concrete increases even after 28 days, and can be reduced significantly with increasing the proportion of clayey soil. The effect of clayey soil on the properties tested of soil concrete is more than that of hemp fibers. In addition, drying shrinkage associated with water mass loss allows to describe the drying process of soil concrete.
Keywords:
soil concrete; hemp fibers; compressive strength; autogenous shrinkage; drying shrinkage; water mass loss.
Tesi sul tema "Hemp lime concrete":
1
Fourmentin, Marine. "Impact de la répartition et des transferts d'eau sur les propriétés des matériaux de construction à base de chaux formulées". Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1100/document.
Abstract (sommario):
Le béton de chanvre est obtenu par le mélange d'un granulat végétal, constitué de bois de chanvre, et d'un liant. Il confère au mur de bonnes propriétés d'isolation thermique et acoustique, ainsi qu'une régulation de l'humidité. Cependant, des problèmes de non-prise, qui semblent fortement liés aux transferts d'eau dans le béton au cours des premières heures, peuvent parfois se produire. La RMN permet de quantifier l'eau dans le chanvre et dans le liant et donc de décrire et comprendre les transferts au cours de la prise. Nous montrons d'abord que, dans le liant constitué d'un mélange de chaux hydraté et de ciment, la chaux accélère la prise du ciment. Cette prise est d'autant plus inhibée que la quantité de chanvre au contact du ciment est importante. Nous montrons également que l'absorption d'eau par le granulat de chanvre s'étale sur trois jours, et qu'elle se produit en deux phases successives correspondant à l'imprégnation de deux zones du chanvre. L'étude des transferts dans le béton pendant la prise révèle une absorption d'eau rapide par le chanvre initialement, puis un transfert vers le liant. L'étude d'un béton de chanvre "modèle" nous permet d'associer ce transfert au retrait chimique du ciment au cours de la priseHemp concrete results from the mix of a vegetal aggregate (hemp shives) and a binder. It provides thermal and acoustic insulation to the wall, as well as a good moisture regulation. However, problems sometimes occur during setting, that seem strongly linked to transfers of water in the concrete in the first hours. NMR allows to quantify water in hemp and in the binder and thus to describe and understand the transfers during setting. We first show that, in the binder consisting of a mixture of hydrated lime and cement, lime accelerates cement hydration. This hydration is inhibited as the amount of hemp in contact with the cement increases. We also show that the absorption of water by hemp shives is takes place during three days, and it occurs in two successive phases corresponding to two areas of hemp that imbibe. The study of transfers in the concrete during the setting shows a rapid water absorption by the hemp initially, followed by a transfer to the binder. The study of a "model" hemp concrete allows us to associate this transfer to the chemical shrinkage of cement during hydration
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Omeme, Ada Arielle Mélissa. "Optimisation des performances hygrothermiques des matériaux biosourcés pour application dans le bâtiment". Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0074.
Abstract (sommario):
La préoccupation environnementale a donné naissance à diverses réflexions dans le but de répondre à deux exigences primordiales: diminuer la consommation d'énergie et les impacts sur l'environnement extérieur, et assurer la qualité et le confort des bâtiments. Il est évident que les solutions utilisées actuelles ne sont pas universelles et leur efficacité dépend de nombreux facteurs comme le climat environnant, le type d'utilisation, etc. Le choix de matériaux utilisés et la compréhension des phénomènes physiques de base liés au climat sont des facteurs essentiels à la réussite de la conception d'un bâtiment à hautes qualités environnementale et énergétique. Le recours à l'utilisation de matériaux bio-sourcés dans la construction (de type co-produits agricoles) est une démarche en plein développement dans le monde qui doit permettre de limiter l'utilisation des ressources fossiles et réduire la facture énergétique. Parmi les nouveaux matériaux, ceux développés à base d'agro-ressources ont fait l'objet depuis plusieurs années d'un regain d'intérêt et de reprise d'études, mettant en valeur leur capacité à réguler les variations hygrométriques ambiantes. Cependant, l'étude bibliographique montre que ces matériaux bio-sourcés possèdent une inertie thermique faible qui pourrait être améliorée en utilisant le matériau à changement de phase (MCP) qui est un matériau capable de transiter entre les différentes phases de façon réversible en échangeant de l'énergie avec son environnement en fonction des conditions de températures imposées. L'objectif de la thèse est d'étudier les performances hygrothermiques de bétons et enduits de chanvre intégrant différents ratios d'un matériau à changement de phase pour application dans le bâtimentThe environmental concern has given rise to various reflections in order to meet two essential requirements: reduce energy consumption and impact on the external environment, and ensure the quality and comfort of buildings. It is obvious that the solutions used today are not universal and their effectiveness depends on many factors such as the surrounding climate, the type of use, etc. The choice of materials used and the understanding of the basic physical phenomena related to the climate are essential factors for the success of the design of a building with high environmental and energy qualities. The use of bio-based materials in construction (agricultural co-products) is a rapidly developing approach worldwide that aims to limit the use of fossil fuels and reduce the energy bill. Among the new materials, those developed based on agro-resources have been the subject for several years of renewed interest and resumption of studies, highlighting their ability to regulate ambient hygric variations. However, the literature review shows that these materials have a low thermal inertia that could be improved by using the phase change material (PCM) that can absorb and release heat energy when phase change occurs depending on the imposed temperature conditions. The aim of the thesis is to study the hygrothermal performance of hemp concrete and hemp coating incorporating phase change materials for application in the building
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Flašková, Veronika. "Komunitní centrum Petrovice". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409993.
Abstract (sommario):
The subject of diploma project is the design of complex of buildings using hemp lime composite, in English known as Hempcerete. Four detached houses are completed by building of facilities. Buildings have one to three floors. The composite fiercly reduces carbon footprint in building industry. The design is focused on different construction systems using hemp lime composite as a wall filling. Detached houses are made of load bearing timber frame with cast-in-situ hempcrete, building of facilities is made of reinforced concrete with precasted blocks. All buildings are cellarless. Detached houses are shed roofed, building of facilities is gable roofed.
Libri sul tema "Hemp lime concrete":
1
Chabannes, Morgan, Eric Garcia-Diaz, Laurent Clerc, Jean-Charles Bénézet e Frédéric Becquart. Lime Hemp and Rice Husk-Based Concretes for Building Envelopes. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-67660-9.
2
Mingé, Jeanine. Concrete and dust: Mapping the sexual terrains of Los Angeles. New York: Routledge, 2013.
3
Šerý, Ondřej, Pavel Doboš, Ladislava Suchá, Jan Martinek, Stanislav Škop, Daniel Kaplan, Simona Surmařová et al. Geografie bariér. A cura di Robert Osman. Brno: Masaryk University Press, 2021. http://dx.doi.org/10.5817/cz.muni.m210-9910-2021.
Abstract (sommario):
The book Geography of Barriers: Examples of Good Barrier-free Practice offers a collection of texts that are interested in making space, services, and information accessible. Thus, the collection is primarily about barriers, their nature, localization, and possible effects. Under barriers, most people imagine material barriers for wheelchair users in the form of steps or sidewalk curbs. Only a few would think that barriers can be represented by loosely placed rugs, unfit lighting, large glass surface, a doorbell without visual output, unwanted attention, frequent asking and offering help, lack of language knowledge, pity, etc. Thus, the book broadens awareness of what can be considered a barrier. The texts are divided into three parts – theoretical, methodic, and empirical – and their arrangement follows the logic of thematic focusing from the most general to the most concrete types of barriers. While the theoretical part places the policies of accessibility into the wider context of scientific disciplines and their development – such as disability studies, disability geography or service design, the methodic part discusses the introduction of accessibility policies in the city of Brno, describing how it tried to make its space, services, and information more accessible. Finally, the empirical part offers 18 examples of relatively good barrier-free implementations that have been recently realized in Brno. This division reflects an effort to target several groups of readers. The first part thus addresses mainly students interested in accessibility issues, the second, methodic part is intended for politicians and municipalities searching for inspiration to implement their own accessibility measures and policies. The last part stating concrete examples of good barrier-free implementations is aimed at general public, at people who like to think about a whole range of topics related to accessibility of space, services, and information.
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Clerc, Laurent, Morgan Chabannes, Eric Garcia-Diaz, Jean-Charles Bénézet e Frédéric Becquart. Lime Hemp and Rice Husk-Based Concretes for Building Envelopes. Springer, 2017.
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Hernes, Tor. Alfred North Whitehead (1861–1947). A cura di Jenny Helin, Tor Hernes, Daniel Hjorth e Robin Holt. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199669356.013.0016.
Abstract (sommario):
Born in England in 1861, Alfred North Whitehead turned to philosophy after a brilliant career in mathematics, where he developed a philosophical scheme based on experience as the ultimate unit of analysis, rejecting what he called the bifurcation between mind and nature that had dominated philosophical thought. He also invoked the idea of concrete experience to connect to American pragmatism, and especially to William James’s work. This chapter first provides an overview of Whitehead’s life and times before turning to his philosophical views. It examines Whitehead’s notion of atomism and his influence on organization studies. Finally, it discusses three aspects of events that may help lay foundations for an event-based organization theory inspired by Whitehead’s philosophy: events as spatio-temporal durations, the forming of events through mirroring, and the open structures of events.
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Nerby, Jill Ann, e Jessca Otis, a cura di. Aniridia and WAGR Syndrome. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195389302.001.0001.
Abstract (sommario):
Our hope is to enlighten and encourage those affected by aniridia and WAGR Syndrome by providing patient support and medical information. There is information to inform parents, teachers, doctors, employers, and the public about aniridia and what it is like to live with it. Several renowned doctors contribute medical chapters. Personal experiences from individuals with aniridia and parents with children with aniridia provide encouragement. Contact information for Aniridia Foundation International (AFI) is included. When a child is born without a complete iris, it is usually a symptom of a broader condition. Known as aniridia, this condition can also be a sign other parts of the eye are underdeveloped as well. Moreover, recent research shows that the gene involved can also affect the kidneys, pancreas and forebrain, so aniridia can coincide with a range of symptoms known as WAGR syndrome. Until recently, however, there was very little information available on aniridia and WAGR Syndrome. Even now, not all of the available information is current or correct, so that when a child is diagnosed with aniridia, the parents often find or are given information that is confusing and even frightening. We created this book to help those families see that they are not alone, and there are a lot of answers and a great deal of hope. It contains information about aniridia and WAGR Syndrome for parents, other family members, friends, teachers, doctors, and employers. We have been very fortunate to have several renowned doctors contribute current and comprehensive medical information that will help to provide concrete answers to basic questions and demystify these conditions. The book has many personal stories from individuals and parents that will help to give a more complete picture of what it is like to live with aniridia and WAGR Syndrome and provide encouragement and comfort. It also contains information about where to go for more answers and support, including the Aniridia Foundation International (AFI), http://www.aniridia.net, a non-profit organization created by one of the authors, Jill Nerby. We hope that you will read this book and join us in creating a better future for those with aniridia and WAGR Syndrome.
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Rush, Elizabeth Barrera. Bringing Genius Hour to Your Library. ABC-CLIO, LLC, 2017. http://dx.doi.org/10.5040/9798400621437.
Abstract (sommario):
This unique book presents a practical and realistic approach to implementing a school-wide, K–12 Genius Hour program–one that can succeed regardless of budgetary and infrastructure constraints. Genius Hour is a movement in which students are allowed to spend a portion of their in-school time learning about a topic of their choosing–even subjects outside of the curriculum. When properly implemented, a Genius Hour program can create true passion for learning among unmotivated students, ignite interest in STEM as well as the arts, encourage collaboration, improve the relationship between educator and students, and help prepare students for real life outside of the educational system. But revamping a school library program to offer a Genius Hour program may seem like an insurmountable task–especially when working with a limited staff or budget. This book provides specific direction and concrete advice that enables school librarians to lead a school-wide program for all grade levels, from kindergarten to 12th grade. It explains why Genius Hour is the perfect program complement to the learning commons environment; presents research and support that will empower librarians to make a convincing case to administration; explains how to enlist the participation of faculty; and provides step-by-step guidance to begin, successfully manage, and grow a campus-wide Genius Hour. Librarians will see why investing in "creative teaching" is worth the effort, despite their limited time and resources; understand how to help underperforming students make their distractions "count" in school; and look forward to playing a part in creating imaginative and independent thinkers, not test takers.
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Oklopcic, Zoran. A New Hope. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198799092.003.0010.
Abstract (sommario):
As the final chapter of the book, Chapter 10 confronts the limits of an imagination that is constitutional and constituent, as well as (e)utopian—oriented towards concrete visions of a better life. In doing so, the chapter confronts the role of Square, Triangle, and Circle—which subtly affect the way we think about legal hierarchy, popular sovereignty, and collective self-government. Building on that discussion, the chapter confronts the relationship between circularity, transparency, and iconography of ‘paradoxical’ origins of democratic constitutions. These representations are part of a broader morphology of imaginative obstacles that stand in the way of a more expansive constituent imagination. The second part of the chapter focuses on the most important five—Anathema, Nebula, Utopia, Aporia, and Tabula—and closes with the discussion of Ernst Bloch’s ‘wishful images’ and the ways in which manifold ‘diagrams of hope and purpose’ beyond the people may help make them attractive again.
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Building Health Throughout the Life Course. Concepts, Implications, and Application in Public Health. Pan American Health Organization, 2021. http://dx.doi.org/10.37774/9789275123027.
Abstract (sommario):
Building Health Throughout the Life Course elucidates how health develops and changes throughout the life course, and how the use of the life course approach among public health practitioners can ensure that health as a human right is achieved for all individuals. It describes the life course vision of health that focuses not only on diseases and their consequences, but rather on achieving long, healthy, active, and productive lives. The book consists of three stand-alone parts. Part 1, “Concepts”, aims to illuminate the complexity of health through the understanding of the life course approach. It can be used to familiarize oneself with the evolution and meaning of the life course, which serves as a basis for effective public health practice. Part 2, “Implications”, identifies the implications for the operationalization of the life course approach in public health. It translates the technical language of the life course literature to understand how the application of the life course approach requires changes in health systems, policies, research, and practice. Part 3, “Application in Public Health”, identifies key opportunities to strengthen the adoption of the life course approach in public health practice. It describes concrete, evidence-based actions to improve health and well-being through the promotion and generation of skills throughout the life course. This book aims to help decision-makers and public health professionals to understand the life course meaning and concepts, which is essential to comprehend how health develops and changes throughout the life course. The book also describes how the life course model allows us to address health disparities by generating mechanisms to improve health and well-being by promoting the vision of health as the product of a series of experiences that contribute to or detract from health in the near and long term.
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Jay, Joelle K. The Inner Edge. ABC-CLIO, LLC, 2009. http://dx.doi.org/10.5040/9798400670350.
Abstract (sommario):
An esteemed executive coach shows managers and leaders how they can achieve personal and professional success—and leave a mark on the world. Dr. Joelle Jay’s The Inner Edge: The 10 Practices of Personal Leadership draws on timeless principles and Jay’s experiences with hundreds of leaders from America’s most successful and admired companies, setting out ten essential components of leading well and living well. In The Inner Edge, Dr. Jay offers customized coaching to help leaders overcome challenges, leverage opportunities, and maximize their talents, teams, and time. Through vivid examples, conversations with accomplished leaders, insightful perspectives on leadership, and thought-provoking questions and exercises, Jay shows readers that leadership is not just a label, but a way of life. Finding your edge, gaining clarity, focusing and taking action, expanding your knowledge—under Jay’s training these and other principles become concrete achievable assets for living and leading. The result is an essential resource for helping leaders get results for their organizations in a way that capitalizes on—and enriches—their own unique identity.
Capitoli di libri sul tema "Hemp lime concrete":
1
Walker, R., e S. Pavia. "Influence of the Type of Binder on the Properties of Lime-Hemp Concrete". In Construction and Building Research, 505–14. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-7790-3_61.
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Moissette, S., M. Bart, Y. Aït Oumeziane, C. Lanos, F. Collet e S. Prétot. "Numerical Tool for the Evaluation of the Hygrothermal Performance of a Hemp-Lime Concrete". In Lecture Notes in Civil Engineering, 533–43. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6713-6_52.
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Wang, Zifeng, e Sara Pavia. "Hot-Lime-Mixed Hemp Concretes". In RILEM Bookseries, 185–96. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33465-8_15.
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Chabannes, Morgan, Eric Garcia-Diaz, Laurent Clerc, Jean-Charles Bénézet e Frédéric Becquart. "Lime and Hemp or Rice Husk Concretes for the Building Envelope: Applications and General Properties". In SpringerBriefs in Molecular Science, 45–98. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67660-9_4.
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Brümmer, Monika, Mª Paz Sáez-Pérez e Jorge Durán Suárez. "Hemp-Clay Concretes for Environmental Building—Features that Attribute to Drying, Stabilization with Lime, Water Uptake and Mechanical Strength". In Advances in Natural Fibre Composites, 249–65. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64641-1_21.
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Schweitzer, Reinhard. "Introduction". In IMISCOE Research Series, 1–7. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-91731-9_1.
Abstract (sommario):
AbstractWhat happens in institutions like schools or hospitals when local service provision overlaps with the control of national borders? Such overlap is unavoidable if unlawful residents are to be excluded from mainstream public services. With this explicit aim, governments not only modify the rules and established practices of welfare provision, but also encourage the people who administer and deliver these services to incorporate the logic of immigration control into their everyday work. To identify and better understand the concrete mechanisms that either help or hinder such internalisation of immigration control, this study systematically compares three spheres of service provision – healthcare, education and social assistance – across two distinctive legal-political environments: Barcelona/Spain and London/UK. Looking at official policies as well as their implementation, it primarily draws on a total of almost 90 semi-structured interviews with irregular residents, providers and administrators of local services, and representatives of NGOs and local government. Its innovative analytical framework helps to map and explain the significant variation in how immigration control works within different institutions and how individual actors occupying key positions in these can reproduce, contest, or readjust formal structures of inclusion and exclusion.
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Bartholomé, Jérôme, Parthiban Thathapalli Prakash e Joshua N. Cobb. "Genomic Prediction: Progress and Perspectives for Rice Improvement". In Methods in Molecular Biology, 569–617. New York, NY: Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2205-6_21.
Abstract (sommario):
AbstractGenomic prediction can be a powerful tool to achieve greater rates of genetic gain for quantitative traits if thoroughly integrated into a breeding strategy. In rice as in other crops, the interest in genomic prediction is very strong with a number of studies addressing multiple aspects of its use, ranging from the more conceptual to the more practical. In this chapter, we review the literature on rice (Oryza sativa) and summarize important considerations for the integration of genomic prediction in breeding programs. The irrigated breeding program at the International Rice Research Institute is used as a concrete example on which we provide data and R scripts to reproduce the analysis but also to highlight practical challenges regarding the use of predictions. The adage “To someone with a hammer, everything looks like a nail” describes a common psychological pitfall that sometimes plagues the integration and application of new technologies to a discipline. We have designed this chapter to help rice breeders avoid that pitfall and appreciate the benefits and limitations of applying genomic prediction, as it is not always the best approach nor the first step to increasing the rate of genetic gain in every context.
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Heim, S. Mark. "How Do Buddhas Help?" In Crucified Wisdom, 209–60. Fordham University Press, 2018. http://dx.doi.org/10.5422/fordham/9780823281244.003.0007.
Abstract (sommario):
This chapter directly addresses the soteriological question: how do bodhisattvas help other beings and how might this affect how Christians understand the work of Christ and the life of the disciple? Attention is given particularly to the variety of concrete bodhisattva figures in Buddhist tradition and to specific forms of practice. Discussion is focused on a class of Tibetan Buddhist meditation practices related to innate compassion—“benefactor practices”—and their significance for Christian understanding and learning.
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McFarland, Ben. "Seven Chemical Clues to First Life". In A World From Dust. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190275013.003.0009.
Abstract (sommario):
I was struck by two colorful examples of the hidden chemical structure of the world while I was supposed to be on vacation on Whidbey Island in Washington State, at a place called Camp Casey. Camp Casey is one of three forts the US Army built at the mouth of the Puget Sound. Each sat on an island and looked toward the others, forming a “Triangle of Fire” across the water route toward Seattle. Now, a century after obsolescence, you can visit the eastern apex of the Triangle, which stands as Fort Casey State Park. Children play in the industrial labyrinth of dark rooms, concrete steps, and watch towers, as parents worry about the lack of railings and abrupt drops. (It helped me learn as a parent to “let go a little.”) The beach breeze and wide- open grounds are perfect for flying kites, a campground sits on the beach, and a ferry across the Sound leaves every hour from next door. It’s a nice place. My fondness for the area comes because I’ve spent a lot of time there. My university owns the old parade grounds and barracks just north of the fort. Faculty can stay in the old officers’ quarters a short walk away. Last time I was there, I was trying not to work but couldn’t help myself from doing a little geology. I saw two strikingly different rocks made of chemicals that may have bridged the gap between the two worlds of the flowing and the fixed—that is, the quick and the dead. The first rock grows out of the concrete fort. It is a white, rippled rock that appears to drip from the walls and flow from the ceilings as teardrop stalactites. It is shaped by water. This water flows through the concrete, dissolving calcium and moving it to the surface. When the calcium in the water meets carbon dioxide in the air, calcium carbonate forms and freezes in a slick white mass. This is the same chemistry that formed the dolomite mountains and absorbed the CO2 blanket, except here it is seeded by an abandoned concrete maze.
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Waghmode, Meghmala S., Aparna B. Gunjal, Namdeo N. Bhujbal, Neha N. Patil e Neelu N. Nawani. "Eco-Friendly Construction". In Reusable and Sustainable Building Materials in Modern Architecture, 80–92. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6995-4.ch004.
Abstract (sommario):
Increase in urbanization leads to more construction of houses, dams, and streets. Reduction of the global warming effects can be carried out by recycling of construction material and searching for eco-friendly construction material. Greenhouse gas emissions can be reduced with the help of construction material which requires less energy for their production. The concept of eco-friendly construction is based on biomimetic (i.e., finding natural material with potential of endurance and self-cleaning properties). Construction materials like Portland cement and concrete can be replaced by eco-friendly biocement and bioconcrete. Production of biocement and bioconcrete can be done by using plants, algae, and bacteria. Use of less cement in concrete leads to less pollution. Concrete is the mixture of cement, sand, gravel, and water. By addition of pozzolan in concrete, the requirement of cement will be reduced. In the current review, major emphasis is given to eco-friendly construction material.
Atti di convegni sul tema "Hemp lime concrete":
1
"Study of Green FRCM Systems Made of Lime-Based Matrix and Hemp Fibers". In SP-326: Durability and Sustainability of Concrete Structures (DSCS-2018). American Concrete Institute, 2018. http://dx.doi.org/10.14359/51711096.
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Zorica, Jelizaveta, Maris Sinka, Genadijs Sahmenko e Diana Bajare. "Improved Magnesium Cement for Durable Hemp Composite Boards". In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.413.
Abstract (sommario):
Hemp concrete is a well-known bio-based building material, but due to its relatively low compressive strength is mainly used as an insulation material with a load-bearing wooden frame. There are possibilities to expand hemp concrete application in construction by substituting traditional lime with magnesium cement. Magnesium oxychloride cement is a material already known for some time and nowadays used in building board production. Strength, lightweight, ease of use are advantages that highlight relatively new magnesium oxychloride type boards compared to traditional sheeting materials such as plywood, gypsum plasterboard and fibre-cement board. Therefore, similar parameters are thought to be reached by producing magnesium oxychloride hemp board. In this work, magnesium cement water resistance was studied and possibilities to improve it was examined by adding fly ash and nanosilica. Among the nanomaterials used in building materials, nanosilica has gained significant interest by performing a beneficial effect in improving the mechanical properties of concretes. In addition, due to its ultrafine size and high chemical reactivity, the performance of nanosilica is much better with a lower amount of admixture required. Results show that applied nanosilica slightly reduced the compressive strength of magnesium cement in a dry state, but at the same time significantly increased its water resistance. Hemp magnesium oxychloride cement board prototype samples were produced and demonstrate promising results for further manufacturing of hemp composite boards.
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"Manufacturing of Hempcrete building block". In The International Conference on scientific innovations in Science, Technology, and Management. International Journal of Advanced Trends in Engineering and Management, 2023. http://dx.doi.org/10.59544/zkuy9763/ngcesi23p18.
Abstract (sommario):
Hemp (Cannabis sativa) is an agricultural crop that can be used as a building material in combination with lime and cement. A composite building material that combines a cementitious binder (building limes and cement) with hemp shives, the woody core of the hemp stalk is generally referred to as hemp concrete (HC). However, industrial facilities to separate hemp shives and fibres are currently not available in India. HC has many advantages as a building material but it is not load-bearing and must be used in combination with a load-bearing RCC frame. The aim of this research was to evaluate the feasibility of using both hemp shives and fibres in a HC to determine an optimal mix of the different binding agents and to investigate if adding cement binder would improve the mechanical strength of the material. The effects on compressive strength of pre-mixing the binder or creating perforations in the test specimens were also investigated.
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KOURTAA, Salim, Morgan Chabannes, Frederic Becquart e Nor Edine Abriak. "Evaluation of a Marine Dredged Sediment as Raw Material Compared to Volcanic Scoria for the Development of Lime-Pozzolan Eco-Binders". In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.263.
Abstract (sommario):
In the context of global warming, the built environment offers relevant opportunities to reduce GHG emissions that underlie climate change. In particular, this can be achieved with the development of low-embodied energy building materials such as bio-based concretes. Hemp concrete has been the subject of many investigations in the field of non-load bearing infill walls in France since the early 1990s. In addition to hygrothermal performances, the use of crop by-products definitely helps to limit the carbon footprint. Hemp concretes are often produced by mixing the plant aggregates with lime-based binders. The latter have many benefits among which the water vapor permeability. However, CO2 emissions due to the decarbonation of limestone for the production of lime largely contribute to the overall environmental balance of these materials. The use of natural pozzolans (volcanic scoria) combined with hydrated lime goes back to the Greco-Roman period and reduces carbon emissions. Nonetheless, it does not necessarily meet the issue related to the depletion of granular natural resources. Hence, this study deals with the design of a new low-carbon binder based on marine dredged sediment seen as an alternative strategic granular resource that can be considered renewable. The sediment comes from the Port of Dunkirk in the North of France and is mainly composed of silt and quartz sand. It was finely ground and compared to a lowly reactive basaltic pozzolan. Lime-pozzolan pastes were prepared and stored in a moist environment under room (20°C) and high temperature (50°C). The hardening kinetics of pastes was followed through mineralogical studies (TGA, XRD) and compressive strength development. The results showed that the hardening of pastes including the marine sediment was suitable in the case of samples stored at 50°C and make it possible to use such a binder for precast bio-based concretes.
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Abdellatef, Yaser, Miroslava Kavgic e Reza Foruzanmehr. "Thermal and Moisture Buffering Properties of Novel Hemp-Lime Composites Integrated with Microencapsulated Phase Change Materials". In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.186.
Abstract (sommario):
Higher requirements for buildings' energy performance and indoor environmental quality have prompted new technologies such as latent heat storage with phase change materials capable of storing and releasing significant quantities of heat per unit mass near room temperature. Conventional building materials (e.g., gypsum, concrete) used for mixing with microencapsulated phase change materials (MPCM) often contain high embodied energy. Hempcrete is a sustainable biocomposite material that can significantly reduce a building's embodied energy and energy consumption while enhancing indoor environmental quality. This research aims to develop a new low-carbon latent heat storage material composed of hempcrete and MPCMs with improved hygrothermal properties for sustainable buildings. Eight hempcrete composites were created using different design mixes using hydrated lime, metakaolin, hydraulic lime, and recycled crushed brick. Furthermore, eight hempcrete-MPCM composites were made using two MPCM types, four MPCM melting temperatures, and two MPCM concentrations. The characterization of composites' thermal and moisture properties includes measuring thermal conductivity, volumetric heat capacity, and moisture buffer capacities. The findings suggest that the developed hempcrete-MPCM samples have a higher heat storage capacity than the hempcrete due to their higher volumetric heat capacity. Moreover, hempcrete-MPCM samples have lower thermal conductivity than hempcrete samples in the same density range and testing orientation. The average moisture buffering value for the hempcrete and HPCM samples of 2.78 and 2.76 (gm/m2 RH%), respectively, indicates excellent moisture buffering performance. The results suggest that the optimal integration of MPCMs requires a thorough consideration of the operating temperature and percentage of MPCMs within the hempcrete concerning the specific application and performance objectives.
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Honoré, Mathilde, Thibaut Lecompte e Sylvie Pimbert. "Properties of <i>Phragmites australis</i> for Insulating Concrete Application". In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.332.
Abstract (sommario):
The common reed, Phragmites australis, is a plant species quite similar to the currently used bio-based aggregates and available on most continents. The purpose of this work is to characterise this common reed and compare its properties to other plants already studied for building use. This study presents the different properties focussing on Phragmites australis chemical composition, hydrophobicity nature and how this character could be explained. To that end, wettability and also water adsorption measurements were carried out on plant flour and aggregates in comparison to miscanthus, wood and hemp shiv properties. Formulations based on reeds of different origins and using different binders (lime and earth) were tested in compression and with thermal conductivity measurements in order to evaluate the behaviour of the reed as a material for building use.
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Chandrasiri, Janith, e Janaka Perera. "The Properties of Lime/Soil Concrete". In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/bjwt7503.
Abstract (sommario):
The investigation of materials for replacing cement in concrete manufacturing has garnered steady interest from experts in recent years. However, the majority of past researches have only focused on the use of lime as a cement substitute in producing Lime Concrete. The reason for this is that lime concrete can be made easily and cheaply while still providing a durable material that can minimize negative environmental impacts. Even though lime is used as an alternative material the integration of a new material as a replacement for conventional aggregates has been limited. As a result, this study will attempt to examine the various compositions of hydraulic lime as a partial replacement of cement while completely replacing the coarse and fine aggregate with a soil to find the influence on the physical characteristics of Lime/Soil concrete. This will also help in decreasing the ecological imbalance caused due to the excess use of conventional aggregates. Locally available reddish-brown laterite soil was used in this study without any modifications. C30 concrete mixes containing 0%, 10%, 15% of hydraulic lime replaced with OPC and complete replacement of aggregate with laterite soil were casted before subjected to water curing. Workability, compressive strength, splitting tensile strength and water absorption test were conducted in accordance with the existing standard. Based on the results obtained from the study it has shown that even with complete replacement of aggregate with laterite soil it was able to produce workable concrete with satisfactory strength that can be employed for ground improvements in pavement design and to manufacture economical non-load bearing concrete blocks. The targeted strength still can be achieved with replacement of 15% hydraulic lime for a lower cost. With the accomplishment from the composition, future studies will be able to better assess the long-term effects of construction operations on the environment. KEYWORDS: Compressive strength, lime concrete, physical properties, hydraulic lime, laterite soil.
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Taddeo, Chiara, Marco Di Giovanni, Alberto Viskovic e Piero D'Asdia. "Great open spaces for emergency covered with Hemp cables nets". In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0221.
Abstract (sommario):
<p>Emergencies like post hurricane or earthquake need of buildings quick and easy to build. These buildings have to be great open spaces in order to host as many people as possible. These buildings can be non-temporary because they are useful for one, two years or more. For this reason, they have to be designed like permanent buildings. This exclude a great number of typologies as for example inflatable structures. The typology suggested is cables net and membrane roofs with hyperbolic paraboloid shape. These typology permits to cover very large span and it is built easily and quickly. In order to encourage a sustainability approach to build, the paper promotes recent developments in the field of material engineering that have allowed for the use of natural materials for common structural elements instead of traditional materials such as steel or concrete. In this context, hemp is a very interesting material for structural building design. This paper proposes the use of hemp cables for roofs with hyperbolic paraboloid cables nets, which sees the use of a sustainability material for structure thus having a very low environmental impact in terms of structural weight. The paper discusses five different plan sizes and two different hyperbolic paraboloid surface radius of curvatures. The cable traction, which gives the cable net stiffness, was varied in order to give a parametric database of structural response. Three-dimensional geometrically nonlinear element analyses were carried out on different geometries and a parametrization of the borders structures of anchorage is given.</p>
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Shurpali, Amogh Arvind, Emily Van Dam, J. Riley Edwards, David A. Lange e Christopher P. L. Barkan. "Laboratory Investigation of the Abrasive Wear Mechanism of Concrete Crosstie Rail Seat Deterioration (RSD)". In 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74107.
Abstract (sommario):
Currently, there are divergent design and performance demands on railway infrastructure components due to increasing freight axle loads and cumulative gross tonnages, as well as increased investment in high-speed passenger rail development in North America. The divergence in loading and performance demands on shared infrastructure arises from the fact that while high-speed passenger trains exert lower loads at relatively high speeds, freight trains exert high loads at relatively low speeds. Improvements in infrastructure component designs are needed to achieve increased durability and tighter geometric tolerances. According to a rail industry survey administered by University of Illinois at Urbana-Champaign (UIUC) in 2008, Rail Seat Deterioration (RSD) is the principal performance problem limiting the service life of concrete crossties in North America. Rail infrastructure researchers and industry experts agree that abrasive wear may occur due to relative motion between the rail pad and concrete crosstie rail seat, potentially resulting in RSD. The complex tribological process of abrasion is further complicated and expected to be accelerated by the presence of abrasive fines and moisture, creating 3-body wear condition. Lack of understanding of the abrasion mechanism has resulted in a sub-optimal and iterative design of ties, causing reduced service life. This paper summarizes our efforts in understanding the effect of changing the mix design of concrete on the abrasion resistance of the rail seat which will eventually help us in modeling abrasive wear in RSD by constructing a mathematical relationship between the rail seat wear rate and input parameters including concrete mix design, mechanical/tribological properties of materials involved, normal load applied, presence of moisture, and abrasive fines. To simulate abrasive wear in RSD, a simple experiment is being carried out using a rotating wheel (lapping machine) capable of abrading concrete samples as a part of UIUC’s Small-Scale Abrasion Resistance Test (SSART). The objective of this research is to develop wear performance curves (e.g. wear depth versus load/time/cycles) for lab specimens developed from concrete crosstie mix designs that are currently being used in the industry, as well as for the evaluation of new mix designs. These data will help the rail industry in mechanistically designing concrete crossties by improving the understanding of materials used for concrete crosstie mix designs, with the objective of decreasing life cycle costs for the crosstie and fastening system. Preliminary SSART results are in agreement with relevant literature documenting the relationships between concrete mix designs and curing conditions and the resulting rate of abrasion.
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Snyder, Mark, Thomas Van Dam, Prashant Ram, Kurth Smith e H. Thomas Yu. "Future Directions and Implementation Strategies for Concrete Pavement Design and Construction". In 12th International Conference on Concrete Pavements. International Society for Concrete Pavements, 2021. http://dx.doi.org/10.33593/m369lz1c.
Abstract (sommario):
The U.S. Federal Highway Administration (FHWA) hosted a ``Concrete Pavement Strategic Planning Meeting'' in August 2019 for the purposes of 1) identifying future needs and directions in concrete pavement design, and 2) the development of strategies to increase the implementation of long-life concrete pavement (LLCP) design and construction. The meeting was attended by an Expert Task Group (ETG) of knowledgeable concrete pavement experts and practitioners representing highway agencies, academia, industry partners and the Federal Highway Administration (FHWA). Many of the strengths and limitations of current concrete pavement design procedures were identified and discussed. It was recognized that AASHTOWare PavementME Design and other similarly sophisticated procedures represent a significant technological leap over empirical design procedures with which they compete (and often replace). However, there are concerns about performance model limitations, the cost-effectiveness of local calibration efforts, the emphasis on surface thickness design (often assuming, rather than designing, support conditions), and other issues. The potential service and economic benefits of LLCP were also discussed. The impetus for implementation (and benefits documented) by some agencies were described, as were the impediments to implementation for other agencies. Strategies were developed to help overcome the impediments identified and to facilitate broader use of LLCP. This paper summarizes key points raised on each of these issues and includes recommendations for future directions in concrete pavement design and increased implementation of LLCP.
Rapporti di organizzazioni sul tema "Hemp lime concrete":
1
Vincent-Lancrin, Stéphan. Skills for Life: Fostering Critical Thinking. Inter-American Development Bank, novembre 2021. http://dx.doi.org/10.18235/0003743.
Abstract (sommario):
AUTHORVincent-Lancrin, StéphanDATEOct 2021DOWNLOAD:English (63 downloads)DOIhttp://dx.doi.org/10.18235/0003743Critical thinking has become key to the skill set that people should develop not only to have better prospects in the labor market, but also a better personal and civic life. This brief shows how policymakers and teachers can help students develop their critical thinking skills. First, this brief defines critical thinking skills. Then, the brief shows how the concept can be translated into teacher-friendly rubrics to support them to design or redesign better lessons but also to assess their students. Lastly, the brief highlights 10 concrete steps for policymakers, school principals, and teachers to better prepare students for the future with critical thinking skills and improve the quality of their education. While applied to the fostering and assessing of students critical thinking skills, those 10 steps can be generalized to the implementation of other forms of educational innovation, notably competency-based curricula.
2
Bell, Matthew, Rob Ament, Damon Fick e Marcel Huijser. Improving Connectivity: Innovative Fiber-Reinforced Polymer Structures for Wildlife, Bicyclists, and/or Pedestrians. Nevada Department of Transportation, settembre 2022. http://dx.doi.org/10.15788/ndot2022.09.
Abstract (sommario):
Engineers and ecologists continue to explore new methods and adapt existing techniques to improve highway mitigation measures that increase motorist safety and conserve wildlife species. Crossing structures, overpasses and underpasses, combined with fences, are some of the most highly effective mitigation measures employed around the world to reduce wildlife-vehicle collisions (WVCs) with large animals, increase motorist safety, and maintain habitat connectivity across transportation networks for many other types and sizes of wildlife. Published research on structural designs and materials for wildlife crossings is limited and suggests relatively little innovation has occurred. Wildlife crossing structures for large mammals are crucial for many highway mitigation strategies, so there is a need for new, resourceful, and innovative techniques to construct these structures. This report explored the promising application of fiber-reinforced polymers (FRPs) to a wildlife crossing using an overpass. The use of FRP composites has increased due to their high strength and light weight characteristics, long service life, and low maintenance costs. They are highly customizable in shape and geometry and the materials used (e.g., resins and fibers) in their manufacture. This project explored what is known about FRP bridge structures and what commercial materials are available in North America that can be adapted for use in a wildlife crossing using an overpass structure. A 12-mile section of US Highway 97 (US-97) in Siskiyou County, California was selected as the design location. Working with the California Department of Transportation (Caltrans) and California Department of Fish and Wildlife (CDFW), a site was selected for the FRP overpass design where it would help reduce WVCs and provide habitat connectivity. The benefits of a variety of FRP materials have been incorporated into the US-97 crossing design, including in the superstructure, concrete reinforcement, fencing, and light/sound barriers on the overpass. Working with Caltrans helped identify the challenges and limitations of using FRP materials for bridge construction in California. The design was used to evaluate the life cycle costs (LCCs) of using FRP materials for wildlife infrastructure compared to traditional materials (e.g., concrete, steel, and wood). The preliminary design of an FRP wildlife overpass at the US-97 site provides an example of a feasible, efficient, and constructible alternative to the use of conventional steel and concrete materials. The LCC analysis indicated the preliminary design using FRP materials could be more cost effective over a 100-year service life than ones using traditional materials.
3
Bergsen, Pepijn, Carolina Caeiro, Harriet Moynihan, Marianne Schneider-Petsinger e Isabella Wilkinson. Digital trade and digital technical standards. Royal Institute of International Affairs, gennaio 2022. http://dx.doi.org/10.55317/9781784135133.
Abstract (sommario):
There is increasing impetus for stronger cooperation between the US, EU and UK on digital technology governance. Drivers of this trend include the economic incentives arising from opportunities for digital trade; the ambition for digital technology governance to be underpinned by shared values, including support for a democratic, open and global internet; and the need to respond to geopolitical competition, especially from China. Two specific areas of governance in which there is concrete potential to collaborate, and in which policymakers have indicated significant ambitions to do so, are digital trade and digital technical standards. - To leverage strategic opportunities for digital trade, the US, EU and UK need to continue identifying and promoting principles based on shared values and agendas, and demonstrate joint leadership at the global level, including in the World Trade Organization (WTO) on e-commerce. - Policy actors in the US, EU and UK should work individually and collectively to build on the latest generation of digital trade agreements. This will help to promote closer alignment on digital rules and standards, and support the establishment of more up-to-date models for innovation and governance. - Collaborating on digital technical standards, particularly those underlying internet governance and emerging technologies, offers the US, EU and UK strategic opportunities to build a vision of digital technology governance rooted in multi-stakeholder participation and democratic values. This can provide a strong alternative to standards proposals such as China’s ‘New IP’ system. - Policy actors should seek to expand strategic cooperation on standards development among the US, EU and UK, among like-minded countries, and among states that are undecided on the direction of their technology governance, including in the Global South. They should also take practical steps to incorporate the views and expertise of the technology industry, the broader private sector, academia and civil society. By promoting best-practice governance models that are anticipatory, dynamic and flexible, transatlantic efforts for cooperation on digital regulation can better account for the rapid pace of technological change. Early evidence of this more forward-looking approach is emerging through the EU’s proposed regulation of digital services and artificial intelligence (AI), and in the UK’s proposed legislation to tackle online harms. The recently launched EU-US Trade and Technology Council is a particularly valuable platform for strengthening cooperation in this arena. But transatlantic efforts to promote a model of digital governance predicated on democratic values would stand an even greater chance of success if the council’s work were more connected to efforts by the UK and other leading democracies
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Aging Well in Asia: Asian Development Policy Report. Asian Development Bank, maggio 2024. http://dx.doi.org/10.22617/sgp240253-3.
Abstract (sommario):
This report provides new data and analysis on well-being among older people in Asia and the Pacific and suggests how policymakers in the region can help people age well. The report explores four linked dimensions of well-being: health, productive work, economic security, and social engagement. It highlights the need for lifelong investment in human capital, a life-cycle approach to intervention for age-specific needs, and population-wide outreach to people of all ages. It provides concrete recommendations in the policy domains of health, employment and retirement, pensions, long-term care and community-level support.
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The Experience of Latin America and the Caribbean in Urbanization: Knowledge Sharing Forum on Development Experiences: Comparative Experiences of Korea and Latin America and the Caribbean. Inter-American Development Bank, marzo 2015. http://dx.doi.org/10.18235/0007004.
Abstract (sommario):
The developing region that has experienced one of the greatest urban growth in the world is Latin America and the Caribbean (LAC). More than 80% of its population currently lives in cities and this figure is projected to reach 90% in 25 years. As part of this process, we can identify different urbanization trends across the region: slow growth rates of megacities due to lower levels of rural-urban migration and greater intra-city migration; high growth rates of mid-size cities; and urban footprints growing faster than populations. Therefore, this more contained growth in larger cities, the existence of a 'demographic bonus'in the next 30 years, and new poles of development in secondary cities offer new opportunities to grow in a more sustainable and equitable way while addressing existing challenges in cities. Rapid urban growth in the countries of LAC has posed a series of challenges that cities, especially intermediate cities, must address to ensure their sustainability in the coming years. Those challenges include limited mobility, poor urban planning, pollution, increased vulnerability to natural hazards, inequity, lack of compliance with labor and building regulations, unemployment, crime, and weak institutional and fiscal capacity, among others. These conditions undermine cities' sustainability and reduce the quality of life of their inhabitants. Given this context, the Bank has developed the Emerging and Sustainable Cities Initiative (ESCI) as a particular approach to help mid-size cities understand their challenges and address them in a more integrated way based upon a model of efficiency in planning and the use of resources that prioritizes sustainability and a higher quality of life for all citizens. The ESCI's action-oriented methodology prioritizes projects in critical areas for sustainability, promoting a better quality of life by strengthening planning, incorporating climate change features, and ensuring citizenship engagement. From the ESCI's experience in more than 20 cities in LAC, important lessons have been learned: introducing adaptation and mitigation measures is an opportunity to address environmental issues and limit the impact of climate change; urban economic development should be based on dense, compact, efficient cities, with mixed land use, and concrete actions to generate productive employment; planning should be considered a basic tool for sustainable urban development and growth; and finally, fiscal capacity should be strengthened with greater access to financial resources and connectivity. Cities that cannot provide an adequate quality of live and preserve physical and environmental assets for future generations will not be competitive. These cities will have a tough time attracting investments and generating productive jobs. As a result of ESCI's learning process, we have realized that it is necessary to examine in a more direct and detailed manner the competitiveness of a city proposing concrete actions to increase investments and to generate productive employment. Involving civil society in city planning and engaging the private sector in urban infrastructure services are also key ingredients of a competitive and successful city. As part of the Bank's knowledge dissemination series, this document exhibits the Latin American and Caribbean experience in terms of urbanization, the identification of the challenges posed by this trend, the IDB's approach to promote the sustainability of LAC mid-size urban centers, the lessons learned from how those challenges are being solved, and their impact on medium-term sustainability of cities and their quality of life.