5,115 research outputs found

    Self-Similarity Breeds Resilience

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    Self-similarity is the property of a system being similar to a part of itself. We posit that a special class of behaviourally self-similar systems exhibits a degree of resilience to adversarial behaviour. We formalise the notions of system, adversary and resilience in operational terms, based on transition systems and observations. While the general problem of proving systems to be behaviourally self-similar is undecidable, we show, by casting them in the framework of well-structured transition systems, that there is an interesting class of systems for which the problem is decidable. We illustrate our prescriptive framework for resilience with some small examples, e.g., systems robust to failures in a fail-stop model, and those avoiding side-channel attacks

    Reducing risk of poor diet quality through food biodiversity

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    Compatibility of Breeding Techniques in Organic Systems

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    Introduction The rapid development of genetic engineering techniques is leading to a level of genetic disruption never experienced before. In order to safeguard organic integrity and to ensure organic food will continue to meet the highest consumer expectations in this challenging situation, IFOAM - Organics International is proposing a number of measures to be put in place to further fortify and enhance the organic sector’s available genetic resources. This position paper provides clarity and transparency on the criteria used by the organic sector as to what breeding techniques are compatible with organic systems, which techniques to exclude, and definitions on what should be considered as genetic engineering and genetically modified organisms (GMOs). We further differentiate between the criteria relevant for organic breeding as defined in the IFOAM – Organics International norms, versus the criteria for cultivars and breeds derived from nonorganic breeding programs regarding their compatibility for the use in commercial organic production and processing. The following experts are members of the IFOAM Working Group on New Plant Breeding Techniques: Michael Glos, Monika Messmer, Gebhard Rossmanith, Gunter Backes, Michael Sligh, Adrian Rodriguez-Burruezo, Heli Matilainen, Andre Leu, Louise Luttikholt, Helen Jensen, Eric Gall, Chito Medina, Krishna Prasad, Kirsten Arp

    Behavioral resilience in the post-genomic era: emerging models linking genes with environment

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    One of the most important deliverables of the post-genomic era has been a new and nuanced appreciation of how the environment shapes—and holds potential to alter—the expression of susceptibility genes for behavioral dimensions and disorders. This paper will consider three themes that have emerged from cutting-edge research studies that utilize newer molecular genetic approaches as well as tried-and-true genetic epidemiological methodologies, with particular reference to evolving perspectives on resilience and plasticity. These themes are: (1) evidence for replicable and robust shared environmental effects on a number of clinically relevant behaviors in childhood and adolescence; (2) evolving research on gene-environment interaction; and (3) a newer focus on differential susceptibility and plasticity. The net sum of these themes is that consideration of genetic effects on behavioral dimensions and disorders needs to be connected to thinking about the role of environment as a potent source for promoting resilience and change

    Dairy development in the Philippines : Visions for the future: uniformity and/or diversity, community and/or commodity

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    Although milk has been produced and processed in the Philippines for a long time, the country does not have a strong dairy tradition. Climate and ecology are not very favourable for high yields. Moreover, policies have been erratic and the country has not used the momentum towards dairy development like some of its neighbours. This report reviews the current state of the dairy sector, with a view to developing visions for the future. Dairy sector fragmentation is partly due to the fact that the country is an archipelago with different ecological and demographic conditions - good markets and favourable ecology often do not come together. The report analyses selected aspects of production systems, value chains, and management, particularly focusing on roles of public and private sector. The country should a) consider its variation as strength and not as weakness and b) focus (use of its public) resources for development of a dairy sector that mainly produces local milk for local markets, rather than trying to become self-sufficient in milk products that can be imported much more cheaply. The country has much to gain from taking development of its dairy sector seriously. Government should become a facilitator, rather than being directly in charge of services like cattle imports, insemination services, and research & education

    Is Virtual Marriage Acceptable? A Psychological Study Investigating The Role of Ambiguity Tolerance and Intimacy Illusion in Online Dating among Adolescents and Early Adults

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    Marriage is one of the most important topics in the education field since life in this world is structured by interaction among families and between families and other social institutions. Dissatisfaction and unsustainability of marriage have led the urgency of premarital education in various countries. The problem is that the spread of virtual reality has made marriage itself to become more complex and experience reinterpretation and reconfiguration, moreover with the emergence of new kind of marriage in the digital era, i.e. virtual marriage. Everybody who has observed, known, or even tried, certainly asks the question, “Could (or: should) I accept virtual marriage?” . This study was aimed to investigate the role of tolerance of ambiguity and illusion of intimacy in online dating in predicting the acceptance of virtual marriage. There were 420 adolescents and young adults (212 males, 208 females; Mage=21.10 years old, SDage=1.459 years; 338 students, 82 employees or entrepreneurs) in the Greater Jakarta, Indonesia, participated in this study. It was found that the acceptance was not predicted by the ambiguity tolerance, but by the illusion of intimacy in online dating. The psychometric issues, substantive discussion, and recommendation are presented at the end of this article. The trend of virtual marriage should not be allowed to roll away, by autopilot, without loaded by strategies in designing an online game as one of the pivotal educational technologies that needs to shape appropriate character and attitude for it

    Role of self-sufficiency, productivity and diversification on the economic sustainability of farming systems with autochthonous sheep breeds in less favoured areas in Southern Europe

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    Traditional mixed livestock cereal- and pasture-based sheep farming systems in Europe are threatened by intensification and specialisation processes. However, the intensification process does not always yield improved economic results or efficiency. This study involved a group of farmers that raised an autochthonous sheep breed (Ojinegra de Teruel) in an unfavourable area of North-East Spain. This study aimed to typify the farms and elucidate the existing links between economic performance and certain sustainability indicators (i.e. productivity, self-sufficiency and diversification). Information was obtained through direct interviews with 30 farms (73% of the farmers belonging to the breeders association). Interviews were conducted in 2009 and involved 32 indicators regarding farm structure, management and economic performance. With a principal component analysis, three factors were obtained explaining 77.9% of the original variance. This factors were named as inputs/self-sufficiency, which included the use of on-farm feeds, the amount of variable costs per ewe and economic performance; productivity, which included lamb productivity and economic autonomy; and productive orientation, which included the degree of specialisation in production. A cluster analysis identified the following four groups of farms: high-input intensive system; low-input self-sufficient system; specialised livestock system; and diversified crops-livestock system. In conclusion, despite the large variability between and within groups, the following factors that explain the economic profitability of farms were identified: (i) high feed self-sufficiency and low variable costs enhance the economic performance (per labour unit) of the farms; (ii) animal productivity reduces subsidy dependence, but does not necessarily imply better economic performance; and (iii) diversity of production enhances farm flexibility, but is not related to economic performance.Publishe

    The climate-smart village approach: Framework of an integrative strategy for scaling up adaptation options in agriculture

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    Increasing weather risks threaten agricultural production systems and food security across the world. Maintaining agricultural growth while minimizing climate shocks is crucial to building a resilient food production system and meeting developmental goals in vulnerable countries. Experts have proposed several technological, institutional, and policy interventions to help farmers adapt to current and future weather variability and to mitigate greenhouse gas (GHG) emissions. This paper presents the climate-smart village (CSV) approach as a means of performing agricultural research for development that robustly tests technological and institutional options for dealing with climatic variability and climate change in agriculture using participatory methods. It aims to scale up and scale out the appropriate options and draw out lessons for policy makers from local to global levels. The approach incorporates evaluation of climate-smart technologies, practices, services, and processes relevant to local climatic risk management and identifies opportunities for maximizing adaptation gains from synergies across different interventions and recognizing potential maladaptation and trade-offs. It ensures that these are aligned with local knowledge and link into development plans. This paper describes early results in Asia, Africa, and Latin America to illustrate different examples of the CSV approach in diverse agroecological settings. Results from initial studies indicate that the CSV approach has a high potential for scaling out promising climate-smart agricultural technologies, practices, and services. Climate analog studies indicate that the lessons learned at the CSV sites would be relevant to adaptation planning in a large part of global agricultural land even under scenarios of climate change. Key barriers and opportunities for further work are also discussed

    Relationships, Layoffs, and Organizational Resilience: Airline Industry Responses to September 11

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    The terrorist attacks of September 11th, 2001 affected the U.S. airline industry more than almost any other industry. Certain of these companies emerged successful, however, and demonstrated remarkable resilience while others languished. This investigation identifies the reasons why some airline companies recovered successfully after the attacks while others struggled. Evidence is provided that layoffs after the crisis, while intended to foster recovery, instead inhibited recovery throughout the four years after the crisis. But layoffs after the crisis were strongly correlated with the lack of financial reserves and the lack of a viable business model prior to the crisis. Digging deeper, we find that having a viable business model itself depended on the extent to which positive employee relationships had been achieved and maintained over the long term. One implication of our findings is that layoffs, while reducing costs in the short term, may also undermine the positive relationships that are critical for achieving lasting recovery.Relationships, layoffs, organizational resilience, terrorist attacks, aviation.

    Assessing agrobiodiversity: A compendium of methods

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    A Compendium of Methods has been prepared by Dunja Mijatović and Toby Hodgkin with contributions from Lukáš Pawera, Stella Beghini, Gennifer Meldrum, Mattia Manica, Barbara Smith, Devra Jarvis, Sajal Sthapit, Roba Bulga Jilo, Stanley Zira, Yasuyuki Morimoto, Patrick Maundu and assistance from (in alphabetical order): Alberto Tarraza Rodríguez, Alejandro González Álvarez, Annelie Bernhart, Epsha Palikhey, Ghanimat Azhdari, Helga Gruberg Cazón, Lal Kumara Wakkumbure, Maede Salimi, Mehdi Esmaeili, Natalia Estrada-Carmona, Reuben Mendakor Shabong and Sonthana Maneerattanachaiyong.Drawing on experiences from projects around the world, PAR has developed a Compendium of methods for assessing agrobiodiversity. The Compendium provides guidelines for the collection and analysis of information about the diversity of crops, livestock, pollinators and harvested wild plants. The aim of the Compendium is to support the documentation, co-creation and sharing of knowledge about agrobiodiversity and its management. We thank our colleagues and friends who shared their methods, data examples, photos and comments. Their contributions made the Compendium a special guideline for exploring diversity in agricultural, forest and pastoral landscapes with local communities
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