Academic literature on the topic 'Global news stream'
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Journal articles on the topic "Global news stream"
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Krstajić, Miloš, Mohammad Najm-Araghi, Florian Mansmann, and Daniel A. Keim. "Story Tracker: Incremental visual text analytics of news story development." Information Visualization 12, no. 3-4 (July 2013): 308–23. http://dx.doi.org/10.1177/1473871613493996.
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Online news sources produce thousands of news articles every day, reporting on local and global real-world events. New information quickly replaces the old, making it difficult for readers to put current events in the context of the past. The stories about these events have complex relationships and characteristics that are difficult to model: they can be weakly or strongly related or they can merge or split over time. In this article, we present a visual analytics system for temporal analysis of news stories in dynamic information streams, which combines interactive visualization and text mining techniques to facilitate the analysis of similar topics that split and merge over time. Text clustering algorithms extract stories from online news streams in consecutive time windows and identify similar stories from the past. The stories are displayed in a visualization, which (1) sorts the stories by minimizing clutter and overlap from edge crossings, (2) shows their temporal characteristics in different time frames with different levels of detail, and (3) allows incremental updates of the display without recalculating the past data. Stories can be interactively filtered by their duration and connectivity in order to be explored in full detail. To demonstrate the system’s capabilities for detailed dynamic text stream exploration, we present a use case with real news data about the Arabic Uprising in 2011.
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Rong, Qiangqiang, Meirong Su, Zhifeng Yang, Yanpeng Cai, Wencong Yue, and Zhi Dang. "Simulation of dissolved nutrient export from the Dongjiang river basin with a grid-based NEWS model." E3S Web of Conferences 38 (2018): 01051. http://dx.doi.org/10.1051/e3sconf/20183801051.
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In this research, a grid-based NEWS model was proposed through coupling the geographic information system (GIS) with the Global NEWS model framework. The model was then applied to the Dongjiang River basin to simulate the dissolved nutrient export from this area. The model results showed that the total amounts of the dissolved nitrogen and phosphorus exported from the Dongjiang River basin were approximately 27154.87 and 1389.33 t, respectively. 90 % of the two loads were inorganic forms (i.e. dissolved inorganic nitrogen and phosphorus, DIN and DIP). Also, the nutrient export loads did not evenly distributed in the basin. The main stream watershed of the Dongjiang River basin has the largest DIN and DIP export loads, while the largest dissolved organic nitrogen and phosphorus (DON and DOP) loads were observed in the middle and upper stream watersheds of the basin, respectively. As for the nutrient exported from each subbasin, different sources had different influences on the output of each nutrient form. For the DIN load in each subbasin, fertilization application, atmospheric deposition and biological fixation were the three main contributors, while eluviation was the most important source for DON. In terms of DIP load, fertilizer application and breeding wastewater were the main contributors, while eluviation and fertilizer application were the two main sources for DOP.
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Sergeyeva, O. V., and N. A. Zinovyeva. "The Public Arenas of Game Streaming (on the Example of the Coronavirus Topic Representation)." Sociology of Power 32, no. 3 (October 2020): 221–41. http://dx.doi.org/10.22394/2074-0492-2020-3-221-241.
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Video streaming has become very popular among game enthusiasts. Live streams of computer games, where there is the possibility of communication, are developing as community meeting places; a number of social scientists are calling this a trend towards new online “third places”. Today’s debate draws attention to the reproduction of a participation culture trough streaming, in the space of which everyone can express themselves creatively, share their opinion, experiences, and information. At the same time, there is a tendency towards the capitalist appropriation of streaming by media businesspersons who stimulate the monetization of participation. Investigating the “sociality of streaming”, the authors highlight the supplementation of the “Let’s Play” discourse with topics from the current agenda, understanding live streams as public media arenas. In the public arenas of computer game live streams, the dramatization and selection of global or local news information in a specific media format takes place. The article demonstrates this phenomenon using the example of the coronavirus, the most prominent topic of spring 2020. The pandemic vocabulary appears in different sections of Twitch game streams, such as titles, audio/ video content, and the chat. Banter and obscene vocabulary are characteristic of the game stream space, however, this is combined with charity fund-raising broadcasts in support of doctors.
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Tubaltseva, Svitlana. "Sport or politics? Critical discourse analysis of European media coverage of Sochi Olympic Games 2014." Networking Knowledge: Journal of the MeCCSA Postgraduate Network 12, no. 1 (August 31, 2019): 55–64. http://dx.doi.org/10.31165/nk.2019.121.551.
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This paper examines how media and news reports in particular contribute to the construction of images on a particular event. For the purpose of it, the Winter Olympic Games 2014 in Sochi were chosen as a global media event owning to its controversial nature and various issues connected with these Games. The data were gathered from two prominent English-speaking news bureaus in Europe and examined to establish how centers of traditional Olympic stream and Western ideology comment on the Games hosted by an ideologically, politically and culturally different country. In attempt to address the aim, the research explores the thematic organisation (topics coverage) and the resources of appraisal in the articles dedicated to Sochi 2014. Despite its manual nature, the research combines both qualitative and quantitative approaches to the analysis of data. The findings revealed that all news bureaus constructed a negative evaluation of Sochi 2014 by means of the use of emotive language and selective coverage of topics relating either to the Games or to the host country. The paper is aimed to contribute to the existing research of critical discourse analysis and systemic functional grammar and present a pioneering study on the Olympic discourse by means of these two theoretical models
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Fazal, Nadeem, Danielle Brehm, Gulgaz Alakbarova, Nihat Cebiyev, Satish Meher, and Laura De Herde. "“Heard immunity”-pandemic teaches immunology vocabulary through hearing from news and social media outlets." Journal of Immunology 208, no. 1_Supplement (May 1, 2022): 106.08. http://dx.doi.org/10.4049/jimmunol.208.supp.106.08.
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Abstract COVID-19 surprised the world and brought with it free immunology lessons. Ever since the pandemic news broke, the public were bombarded with immunological vocabulary. Immunology as a biomedical science had never attained student interest, let alone having an overwhelming global attention among the general public. The purpose of our study was to evaluate the extent to which immunology had become a common knowledge because of the main stream media and social outlets broadcasting news. We conducted a global survey of all people, regardless of gender identity, age, education, and geographical location to ask if they knew the meanings of specific immunological terms used in mainstream news outlets and social media. The words included, but were not limited to, antigen, antibody, T-cell, B-cell, mRNA, DNA, coronavirus, quarantine, lockdown, social distancing, PCR, rapid antigen tests, outbreak, herd immunity, vaccine, viral infections, infection rate, mortality rate, immunotherapy, and immune boosting drugs, etc. When we analyzed the data, we found the following trends. 139/179 (77.7%) said 'yes', they did learn about immunology in lockdown. 100/179 (55.9%) said they learnt about Pfizer, followed by Moderna (33.5%), BioNTech (31.8%), and AstraZeneca (29.6%). 86/179 (48%) learnt about the body's defense system, while 20.7% of people already knew about T cells, B cells, immune therapy, and immunity. 95/179 (53.1%) of people asked learned about airborne infections, making them the most common type of respiratory infections learnt about during COVID-19. The word ‘pandemic’ was learnt by 111/179 (62%) people. Overall, COVID-19 has propelled immunology into the general public’s vocabulary and knowledge in a way that has never been done before.
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Kim, Minkyoung, Lexing Xie, and Peter Christen. "Event Diffusion Patterns in Social Media." Proceedings of the International AAAI Conference on Web and Social Media 6, no. 1 (August 3, 2021): 178–85. http://dx.doi.org/10.1609/icwsm.v6i1.14248.
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This study focuses on real-world events and their reflections on the continuous stream of online discussions. Studying event diffusion on social media is important, as this will tell us how a significant event (such as a natural disaster) spreads and evolves interacting with other events, and who has helped spreading the event. Tracking an ever-changing list of often unanticipated events is difficult, and most prior work has focused on specific event derivatives such as quotes or user-generated tags. In this paper, we propose a method for identifying real-world events on social media, and present observations about event diffusion patterns across diverse media types such as news, blogs, and social networking sites. We first construct an event registry based on the Wikipedia portal of global news events, and we represent each real-world event with entities that embody the 5W1H (e.g., organization, person name, place) used in news coverage. We then label each web document with the list of identified events based on entity similarity between them. We analyze the ICWSM’11 Spinn3r dataset containing over 60 million English documents. We observe surprising connections among the 161 events it covers, and that over half (55%) of users only link to a small fraction of prolific users (4%), a notable departure from the balanced traditional bow-tie model of web content.
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Mitra, Tanushree, and Eric Gilbert. "CREDBANK: A Large-Scale Social Media Corpus With Associated Credibility Annotations." Proceedings of the International AAAI Conference on Web and Social Media 9, no. 1 (August 3, 2021): 258–67. http://dx.doi.org/10.1609/icwsm.v9i1.14625.
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Social media has quickly risen to prominence as a news source, yet lingering doubts remain about its ability to spread rumor and misinformation. Systematically studying this phenomenon, however, has been difficult due to the need to collect large-scale, unbiased data along with in-situ judgements of its accuracy. In this paper we present CREDBANK, a corpus designed to bridge this gap by systematically combining machine and human computation. Specifically, CREDBANK is a corpus of tweets, topics, events and associated human credibility judgements. It is based on the real-time tracking of more than 1 billion streaming tweets over a period of more than three months, computational summarizations of those tweets, and intelligent routings of the tweet streams to human annotators — within a few hours of those events unfolding on Twitter. In total CREDBANK comprises more than 60 million tweets grouped into 1049 real-world events, each annotated by 30 human annotators. As an example, with CREDBANK one can quickly calculate that roughly 24% of the events in the global tweet stream are not perceived as credible. We have made CREDBANK publicly available, and hope it will enable new research questions related to online information credibility in fields such as social science, data mining and health.
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Zamith, Rodrigo, and Mario Haim. "Algorithmic Actants in Practice, Theory, and Method." Media and Communication 8, no. 3 (July 10, 2020): 1–4. http://dx.doi.org/10.17645/mac.v8i3.3395.
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What changes as algorithms proliferate within journalism and become more sophisticated? In this essay, we synthesize the articles in this thematic issue, which offer empirical evidence for how algorithms—and especially those designed to automate news production—are being incorporated not only into journalistic activities but also into the logics of journalism itself. They underscore that journalists have neither feared nor rejected such algorithms, as might be expected given the recent history of technological adoption in journalism. Instead, journalists have sought to normalize the technology by negotiating them against existing values and practices, and perhaps even reified some normative ideological constructs by finding unique value in what they offer as humans. These articles also highlight the shortcomings of those algorithms, giving pause to postulations of algorithms as potential solutions to shortcomings of trust in news and market failures. Indeed, such algorithms may end up amplifying the very biases that seed distrust in news all the while appearing less valuable to readers than their human counterparts. We also point to new opportunities for research, including examinations of how algorithms shape other stages in the journalistic workflow, such as interviewing sources, organizing knowledge, and verifying claims. We further point to the need to investigate higher analytic levels and incorporate additional perspectives, both from more diverse contexts (e.g., Global South) and from our sister academic fields (e.g., human–computer interaction). We conclude with optimism about the continued contributions this stream of work is poised to make in the years to come.
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Nagar, Vidhi. "ROLE OF COMMUNICATION TOOLS IN THE PROMOTION OF MUSIC." International Journal of Research -GRANTHAALAYAH 3, no. 1SE (January 31, 2015): 1–2. http://dx.doi.org/10.29121/granthaalayah.v3.i1se.2015.3440.
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In the modern era, it would be like glorifying the media to include every media related to human life from fingernail to fire. It is the medium that has the ancient ideology and values of society as popular with globalization and modern thought stream The society, which is inhabited by the rajas, has also been plunged to the present day, seeing the reach and impact of media in particular, a frazzled Schmimiya state has been born, especially in order to achieve the concept of global global culture of Mishwa. It is from these media that we can see the news of events at the far end of the world, as far as music is concerned, it is possible that we can cope with many ages, ages and lives. When it is achieved in its present form, in the same continuous stream of time, it is infectious, sometimes Pallimat and Sushobhamat are the modern communication mediums in this stream are also pushing it deeper.Achayat Sharangadei has said in his famous book, Song Ratnakaresh
आधुमनक काल में मानि जीिन से संबंमधत हर क्षेत्र को नख से मशख तक प्रभामित करने िाले संचार माध्यमों को ममहमादृमंमित करनाए सूरज को मदया मदखाने जैसा होगा द्य यह िह माध्यम है मजसने िैश्वीकरण ि आधुमनक मिचार धारा से लबरेज समाज के सार्थ ही पुरातन मिचारधाराए मान्यताओं ि रीमत ररिाजों से सराबोर समाज को भी तह तक प्रभामित मकया है द्य िततमान समय में संचार माध्यमों कीए मिशेषकर मीमिया की पह ंच और प्रभाि को देखते ह ए ही एक फ्रेज़ श्मीमिया स्टेटश् का जन्म ह आ है द्य मिशेषकर मिश्व के श्ग्लोबल मिलेजश् की पररकल्पना को प्राप्त करने में सबसे महत्िपूणत हार्थए इन्हीं संचार माध्यमों का हैए इन्हीं की बदौलत हम कोसों दूर की क्याए मिश्व के दूरस्र्थ छोर की खबरोंए घटनाओं का उसी पल अिलोकन कर सकते है द्य जहां तक संगीत का सम्बन्ध हैए यह सित मिमदत है मक अनेकों युगोंए कालोंए ि पररमस्तमर्थयों का सामना करते ह ए यह अपने िततमान स्िरुप को प्राप्त ह आ है द्य समय की इसी सतत प्रिामहत धारा में कभी यह संक्रममत ह आए तो कभी पल्लमित ि सुशोमभत द्य इसी धारा क्रम में आधुमनक संचार माध्यम भी इसे गहरे तक प्रभामित कर रहे है द्यआचायत शारंगदेि ने अपने प्रमसद्ध ग्रन्र्थ श्संगीत रत्नाकरश् में कहा है
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Saleem, Adil, Judit Bárczi, and Judit Sági. "COVID-19 and Islamic Stock Index: Evidence of Market Behavior and Volatility Persistence." Journal of Risk and Financial Management 14, no. 8 (August 20, 2021): 389. http://dx.doi.org/10.3390/jrfm14080389.
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The aftermath of the COVID-19 pandemic is not limited to human lives and health sectors. It has also changed social and economic aspects of the world. This study investigated the Islamic stock market’s reaction and changes in volatility before and during this pandemic. The market model of event study methodology was employed to analyze Islamic stock market reactions in nine different markets around the globe. To examine changes in volatility and persistence of risk, the generalized autoregressive conditional heteroscedasticity (GARCH) method was used. Nine Islamic stock indices were selected for this study from the Thomson Reuters data stream. The results suggest that, in the short run, the Islamic Australian stock index and Islamic GCC stock index remained stable for the first 15 days following news of the pandemic. The Islamic stock indexes of Qatar, UAE, ASEAN, MENA, MENASA, and Bahrain were significantly affected by the outbreak in the short-term. On the other hand, the volatility of Islamic stock indices was substantially amplified after the global health crisis was declared by the WHO. Moreover, volatility shocks tended to persist for a longer period after COVID-19.
Dissertations / Theses on the topic "Global news stream"
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Volkov, Vladimir Vladimirovich. "Volatility transmission in global financial markets." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/87087/1/Vladimir_Volkov_Thesis.pdf.
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As financial markets have become increasingly integrated internationally, the topic of volatility transmission across these markets has become more important. This thesis investigates how the volatility patterns of the world's main financial centres differ across foreign exchange, equity, and bond markets.
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Snow, Alan Dee. "A New Global Forecasting Model to Produce High-Resolution Stream Forecasts." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5272.
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Warning systems with the ability to predict floods days in advance can benefit tens of millions of people. Because of these potential impacts there have been efforts to improve prediction systems such as the United States’ Advanced Hydrologic Prediction Service and European-developed Global Flood Awareness System. However, these projects are currently limited to relatively coarse resolutions. This thesis presents a method for downscaling and routing global runoff forecasts generated by the European Centre for Medium-Range Weather Forecasts using the Routing Application for Parallel computatIon of Discharge program that make possible orders of magnitude increases in the density of the resolution of stream forecasts. The processing method involves using the Amazon Web Services to distribute execution in a cloud-computing environment to make it possible to solve for large watersheds with high-density stream networks. Using the Amazon Web Services, the number of streams that can be used in the downscaling process in a twelve-hour period is approximated to be close to five million. In addition, an application for visualizing large high-density stream networks has been created using the Tethys Platform of water resources modeling developed as part of the CI-WATER NSF grant. The web application is tested with the HUC-2 Region 12 watershed network with over 67,000 reaches and is able to display analyzed results to the user for each reach.
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DePriest, Alexander. "Bus Shelters as Shared Public and Private Entities; and Bus Shelter Advertising Contracts (BSACs), a Product and Source of Global Change: an Overview, History, and Comparison." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1867.
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The transit shelter, the space where riders make the transition from open space to more controlled buses and trains, is in many cases the site of a public-private transaction. Here, government agencies contract private companies to build and maintain shelters in exchange for governmental allowance of advertising in these locations. This dual purpose—the shelter serves concurrently as protection for transit users and as a moneymaker—means the space is contested, with economic and social needs often at odds. Bus shelter advertising contracts (BSACs), increasingly operated by large corporations, have resulted in widespread networks of bus shelters; observing these renders processes of globalization—generally not visible at the street level—more legible. Drawing from case studies of Lyon, France, and Los Angeles and New Orleans, United States, this thesis describes successes and failures both in the implementation of bus shelter contracts and in the provision of public amenities via shelters.
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Nicol, Olivia. "Dynamics of Attribution of Responsibility for the Financial Crisis." Thesis, 2016. https://doi.org/10.7916/D8N016Q6.
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Many recent books and articles have aimed to account for the recent financial crisis. They have exposed the facts, identified the causes, and assigned responsibility. They have proposed solutions to prevent a similar crisis to happen in the future. The debate is still ongoing, revealing a process of History in the making. My dissertation builds on this debate, but it does not contribute to it. I do not try to understand who is responsible for this crisis. I instead try to grasp how responsibility for this crisis was constructed. I explore the production of - and response to - a discourse of accusation. To study accusation discourses, I conducted a media analysis of three main national newspapers: The New York Times, The Wall Street Journal, and USA Today. I show how a blame game dominated by Democrats participated in the crystallization on Wall Street’s responsibility. To study responses to accusation discourses, I conducted thirty-three interviews in three Wall Street banks from Fall 2008 to Summer 2010. I show that bankers became increasingly defensive over time, while never accepting any personal responsibility for the crisis. Similarly, they reject the label of the “greedy banker.” Overall I argue that the complexity of modern social arrangement loosens the intrinsic connection between responsibility and accountability.
Books on the topic "Global news stream"
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Confidence game: How a hedge fund manager called Wall Street's bluff. Hoboken, N.J: Wiley/John Wiley & Sons, Inc., 2010.
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Confidence game: How a hedge fund manager called Wall Street's bluff. New York: Bloomberg Press, 2010.
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Brinkmann, Svend. Global Influences on Qualitative Research. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190247249.003.0007.
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This chapter adds a global perspective to the European and American traditions and includes feminist, indigenous, and “new philosophies” from throughout the world. These philosophies are born in a globalized world and yet often stress the significance of local knowledges, and they typically cut across the philosophical traditions introduced previously in this book. First, this chapter discusses feminist philosophy, which has challenged the dominance of male-centered perspectives and has also led to many fruitful qualitative studies. Second, this chapter discusses some of the variety of indigenous philosophies and how these represent qualitative forms of inquiry that may also be inspiring for other (Western) qualitative researchers, not least because of the non-acceptance of the nature/culture divide in most indigenous cosmologies. Finally, the chapter discusses the post-qualitative movement, which also does not accept the nature/culture and matter/meaning divides but tries to approach practices of inquiry from other theoretical perspectives.
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The Sellout: How Three Decades of Wall Street Greed and Government Mismanagement Destroyed the Global Financial System. Harper Paperbacks, 2010.
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Kim, J. S. Confessions of a Wall Street Insider, A Zen approach to making a fortune from the coming global economic Crisis. Lulu Press, Inc., 2008.
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Öjendal, Joakim, and Gustav Aldén Rudd. “Something Has to Yield”. Edited by Ken Conca and Erika Weinthal. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199335084.013.29.
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As estimations and predictability of water supply in basins around the globe become difficult under a changing global climate, the need for new transboundary water management arises. To avoid international tensions related to water, traditional water agreements between states need to be transformed into more sophisticated and flexible arrangements of water governance. Designing and implementing such arrangements is a huge challenge since they must involve multiple stakeholders, must take into consideration the accelerating global water scarcity, and are dependent on the risks and unknowns of global climate change. Following an exploration of the core literature on the topic and the theoretical underpinnings of how to govern future risks, this chapter takes a closer look at the status of three important transboundary basins: the Meuse, the Mekong, and the Teesta basin. These basins all experience water stress with riparian states at different stages of agreeing on transboundary institutions and institutional cooperation.
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Smith, Tony. America's Mission. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691154923.001.0001.
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This book provides a comprehensive historical review of American liberal democratic internationalism. It argues that the global strength and prestige of democracy today are due in large part to America's impact on international affairs. The book documents the extraordinary history of how American foreign policy has been used to try to promote democracy worldwide, an effort that enjoyed its greatest triumphs in the occupations of Japan and Germany but suffered huge setbacks in Latin America, Vietnam, and elsewhere. With new chapters and a new introduction and epilogue, this expanded edition also traces U.S. attempts to spread democracy more recently, under presidents Bill Clinton, George W. Bush, and Barack Obama, and assesses America's role in the Arab Spring. The book argues that liberal internationalism is built on powerful global historical trends, and the liberal internationalist streak in American foreign policy has been responsible for shaping a liberal world order conducive to American security and economic interests.
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Chris, Trelawny. 5 The IMO: Maritime Security: An Essential Feature for Sustainable Maritime Development and Global Ocean Governance. Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780198823957.003.0005.
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This chapter provides a new perspective on the subject of maritime security. It argues that piracy and armed robbery at sea are in reality land-based problems, the root causes of which still remain to be addressed by the international community. However, this chapter also maintains that, instead of focussing on short-term security measures, the stress factors that lead to instability, insecurity, and uncontrolled mass migration should also be addressed. The aim should be to improve economic development, supported by maritime development and underpinned by maritime security. Furthermore, the chapter examines not only the issue of piracy and terrorism at sea but also International Maritime Organization (IMO) measures aimed at improving security of international movements of containers, which has a wider implication than just prevention of terrorism and the protection of customs revenues.
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Wiruchnipawan, Fon, and Roy Y. J. Chua. Intercultural Relationships and Creativity. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190455675.003.0009.
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In the global economy, individuals have to engage in cross-cultural interactions when tasked to develop creative new products or services. Research on the effects of cultural diversity on creativity, however, has been equivocal. One stream of research champions that cultural diversity in relationships broadens ideas and resources for creative thinking, whereas skeptics counter that intercultural tensions and conflicts hurt rather than help. This chapter discusses both sides of the argument. We examine the effects of intercultural relationships on creativity from three perspectives: (a) how a culturally diverse social environment (including social networks) influences individuals’ creativity; (b) how individuals can successfully engage in intercultural dyadic creative collaboration; and (c) how intercultural relationships influence creativity of multicultural teams. In addition, we investigate the underlying mechanisms and boundary conditions of how intercultural relationships impact creative performance. We conclude by integrating ideas from existing research and proposing new research directions.
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Minard, Pete. All Things Harmless, Useful, and Ornamental. University of North Carolina Press, 2019. http://dx.doi.org/10.5149/northcarolina/9781469651613.001.0001.
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Species acclimatization--the organized introduction of organisms to a new region--is much maligned in the present day. However, colonization depended on moving people, plants, and animals from place to place, and in centuries past, scientists, landowners, and philanthropists formed acclimatization societies to study local species and conditions, form networks of supporters, and exchange supposedly useful local and exotic organisms across the globe. Pete Minard tells the story of this movement, arguing that the colonies, not the imperial centers, led the movement for species acclimatization. Far from attempting to re-create London or Paris, settlers sought to combine plants and animals to correct earlier environmental damage and to populate forests, farms, and streams to make them healthier and more productive. By focusing particularly on the Australian colony of Victoria, Minard reveals a global network of would-be acclimatizers, from Britain and France to Russia and the United States. Although the movement was short-lived, the long reach of nineteenth-century acclimatization societies continues to be felt today, from choked waterways to the uncontrollable expansion of European pests in former colonies.
Book chapters on the topic "Global news stream"
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Shepherd, Nick. "Archaeology Dreaming: Postapartheid Urban Imaginaries and the Remains of the Prestwich Street Dead." In New Perspectives in Global Public Archaeology, 155–66. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0341-8_12.
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Masuki, Yui. "Ideas and Practices for Restoring the Humanity of Sanitation Workers in India." In Global Environmental Studies, 21–45. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7711-3_3.
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AbstractThis chapter briefly traces the struggle to restore sanitation workers’ humanity in India since the early twentieth century. Sanitation labor has generally been carried out by people from the Dalit community, a group of castes formerly referred to as “untouchables.” By paying attention to M. K. Gandhi, B. R. Ambedkar, government authorities, and nongovernmental organizations (NGOs), this chapter examines how humanitarian interventions were made via ideological and practical approaches to address the circumstances of sanitation workers and the limitations thereof. Gandhi’s emphasis on the moral aspect of scavenging and Ambedkar’s stress on the structural inequalities in the division of sanitation labor informed the mainstream ideas in preindependence India. However, efforts after independence were committed to abolishing the specific task of manual scavenging as a sine qua non for the emancipation of sanitation workers. These endeavors primarily entailed abolishing scavengers’ customary rights, the technological invention of low-cost flush toilets, and legal actions taken against the government. However, these attempts have led to dismissing the importance of providing “adequate sanitation” to the bulk of the population (Chaplin, The politics of sanitation in India. Orient Blackswan, New Delhi, 2011: 185, 267), enhancing nonscavenging sanitation workers’ conditions, and developing a more mechanized, holistic human waste disposal system. Further, having underlined the unsanitary, inhuman, or moral dimensions of sanitation labor, these interventions did not necessarily consider the complicated context of actual sanitation workers regarding how they perceive the labor on their own terms.
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Momodu, A. S., E. F. Aransiola, T. D. Adepoju, and I. D. Okunade. "Global Strategy, Local Action with Biogas Production for Rural Energy Climate Change Impact Reduction." In African Handbook of Climate Change Adaptation, 1381–99. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_198.
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AbstractGlobal climate change impact is predicted to affect various sectors including the energy demand and supply sectors respectively. Combating this impact will require adoption of both global strategy and localized actions. The use of low carbon strategy based on renewables is a global strategy, while waste management of biodegradable materials through the use anaerobic technology to meet energy demand is a local action. Nigeria is among the vulnerable countries to global climate change impact; this is even more aggravated by its dependence on fossil fuel usage as well as poor waste management, which two, contribute significantly to greenhouse gas emissions. This chapter presents analysis of purified compressed biogas production, a waste conversion option, as a local action to meet rural household energy demand and contribute to global strategy of reducing climate change impact. It discusses both technical and business model approaches to upscale a laboratory experimental procedure for biogas production through anaerobic digestion using vegetal wastes. It shows that using anaerobic technology can achieve efficient waste management and at the same time generate energy that can be used to achieve avoided emissions for climate change impact reduction. The study also concludes that upscaling the project will be sustainable for rural energy augmentation as it produces clean and renewable energy, reduces the use of fossil fuels, provides jobs for skilled and unskilled labor, and generates new return streams.
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Magiri, Royford, Kaampwe Muzandu, George Gitau, Kennedy Choongo, and Paul Iji. "Impact of Climate Change on Animal Health, Emerging and Re-emerging Diseases in Africa." In African Handbook of Climate Change Adaptation, 1835–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_19.
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AbstractThe threat of climate change and global warming is gaining worldwide recognition. The African continent, because of its size, diversity, and its new status as a “hub” of livestock production, need to gear up to mitigate the possible impacts of climate change on animal health. The aim of this review article is to summarize the current state of knowledge regarding the influence of climate and climate change on the health of food-producing animals. Depending on its intensity and duration, heat stress may directly affect livestock health by causing metabolic disruptions, oxidative stress, and immune suppression, causing increased disease susceptibility, and death. Animal health could also be affected by emergence and re-emergence of vector- and non-vector-borne pathogens that are highly dependent on climatic conditions. The response to these challenges requires community participation in the adaptation of animal production systems to new environments and strengthening the efficiency of veterinary services delivery combined with well-coordinated public health services, since many emerging human diseases are zoonotic.
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Woo, Alexander, and Shirley Ngai. "Evolution of Clinical Education under COVID-19 Pandemic: Blended Clinical Education." In Global Perspectives on Educational Innovations for Emergency Situations, 317–26. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99634-5_31.
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AbstractClinical education is traditionally face-to-face and includes hands-on experience with patients. Under the pandemic, all clinical practice in various settings were suspended because of the safety concern of students, patients and clinical educators. Under the pandemic, the demand of the healthcare professionals for acute management and post-pandemic rehabilitation was increased. The suspension of clinical training delayed students’ graduation which was especially undesirable because of the insufficient manpower in society and the healthcare system. With limited knowledge on the transmission, management and post-COVID health impact, strict rules of infectious control have been executed. When considering the resumption of clinical education to students, the issue of everyone’s safety, students’ learning experience, fulfilling the intended learning outcomes, and most importantly, meeting the criteria of professional licensure registration must be balanced. Given the urgency, the clinical education team had reviewed the key intended learning outcomes of clinical education in the existing curriculum and revamped the content by including concepts of effective learning and blended strategies. A new model—“Blended Clinical Education”—a combination of face-to-face and online modes was established. To ensure successful launch of the new model, numerous briefings with students, clinical educators, faculty members and licensure registration board were organized for easing their stress. With all colleagues’ efforts, students finally graduated in time and joined the healthcare system providing urgent supply of manpower.
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Dennen, Vanessa, and Jiyae Bong. "Open, Flexible, and Serving Others: Meeting Needs during a Pandemic and beyond." In Global Perspectives on Educational Innovations for Emergency Situations, 109–18. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99634-5_11.
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AbstractIn the early days of the COVID-19 pandemic when in-person courses were switching to emergency remote learning formats, even students online needed flexibility. This case study describes how a graduate-level online class on open learning and open educational resources (OER) was redesigned to both allow students to apply their course-related knowledge and skills in the service of others and accommodate students whose other life responsibilities had changed. Findings show that these online students experienced great stress during Spring 2020, and many had increased job duties related to the shift to remote learning. These students appreciated the flexible redesign and used it as an opportunity to help integrate OER in their own remote teaching and assist others to do the same. They provided their colleagues and the field at large with educational resources about finding, using, creating, and sharing OER, all while meeting course objectives. Even students who were not employed as educators or instructional designers embraced the opportunity to be helpers and deploy their new knowledge and skills. Student learning outcomes were assessed using reflective portfolios, and course objectives were met whether students followed the original course plan or took advantage of the course redesign.
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Akoka, Karen, Olivier Clochard, Iris Polyzou, and Camille Schmoll. "What’s in a Street? Exploring Suspended Cosmopolitanism in Trikoupi, Nicosia." In IMISCOE Research Series, 101–10. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67365-9_8.
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AbstractSituated at the eastern part of the Mediterranean Sea, the island of Cyprus has always been a bridge as well as a border between the Middle East and Europe. It has also been an important place of both emigration and immigration. The situation in Nicosia, the capital city, is marked by decline following the 1974 conflict and partition. At the same time, however, the city has become an important settling place for international migrants, whose presence has grown during the last 20 years. Today Nicosia’s situation lies between a typical south European city (in which migrants find room in the interstices) and a post-war city. Following the growing effort within migration studies to use the street as a laboratory of diversity and cosmopolitanism (Susan Hall), this paper focuses on a single street. Formerly an important business street, Trikoupi Street is now well known as one of the most cosmopolitan streets in Nicosia, in which south Asians, Arabs, Sub-Saharan Africans as well as Eastern Europeans converge. These different populations correspond to different migratory waves as well as different modes of incorporation into local society. In this chapter, we aim to see how the street level may help us to reflect upon important topics in Cyprus such as contested citizenship, urban change, local/global connections, as well as new forms of cohabitation and patterns of subaltern cosmopolitanism. We also aim to reflect upon the multiple temporalities of the neighborhood, in order to show how the history of the street (and the history of the neighborhood) impacts on current ways of life in Trikoupi. We define the current situation as “suspended cosmopolitanism.”
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Vasisht, Prateek, and Jairo A. Gutierrez. "An Investigation of Revenue Streams on New Zealand Online Content Providers." In Advanced Topics in Global Information Management, Volume 5, 226–39. IGI Global, 2006. http://dx.doi.org/10.4018/978-1-59140-923-6.ch010.
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This chapter describes an empirical investigation into the revenue streams of online content providers in New Zealand. It extends previous academic literature by taking a broader scope and a unique geographic focus (New Zealand). Framed according to a proposed integrated classification of revenue streams and supporting features, which identifies six revenue streams and four supporting features, the study investigates the satisfaction levels of content providers with the revenue stream(s) they use, the issues faced in generating revenue and whether the supporting features support the revenue generating capacity of content sites. After applying certain eligibility criteria, 36 sites comprised the target population of which 11 were represented. Web site examinations coupled with a mixture of face-to-face and e-mail interviews with senior managers comprised the data collection instruments. Respondents used all six revenue streams to monetize their online content. A profile of revenue stream usage, satisfaction levels with revenue stream performance, the issues surrounding revenue generation and the contributions of supporting features are presented.
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Gautney, Heather. "Wall Street." In The New Power Elite, 123–50. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/oso/9780190637446.003.0006.
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Abstract This chapter studies shifts in the capitalist economy’s center of gravity from production to finance over the last half century and the consolidation of elite wealth and power through techniques of financialization. It traces the integration and unfettering of financial institutions and markets worldwide that have multiplied opportunities for wealth making—through financial innovation, structural adjustment, predatory lending, and high-risk speculation—and the ability of “too big to fail” banks to increase profits while externalizing risk onto the public. The chapter recalls the wealth generated on Wall Street in the 1980s vis-à-vis leveraged buyouts and explains how private equity firms today are drawing from that playbook to extract value from corporate assets and workforces, largely through plunder. It also follows the more recent rise of asset management firms—with massive ownership stakes in nearly every major corporation—that wield systemic-level power over the U.S. government and global economy.
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Steinberg, Paul F. "Recycling Is Not Enough." In Who Rules the Earth? Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199896615.003.0005.
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Faced with an endless stream of alarming news about the environment—rising temperatures and declining water supplies, population growth and species extinction, oil spills and cancer clusters—people increasingly want to know what can actually be done to address these problems. Concerned parents comb through websites late at night in search of safer products for their children. Students pack lecture halls in hundreds of environmental studies programs that have popped up on college campuses across the globe. Our grocery aisles and magazine stands are filled with advertisements promising that sustainability is just one more purchase around the corner. The major current of environmental thinking today emphasizes the small changes we can make as individuals, which (we are told) will add up to something big. Michael Maniates, a political scientist at Allegheny College, observes that the responsibility for confronting these issues too often “falls to individuals, acting alone, usually as consumers.” Yet solutions that promote green consumerism and changes in personal lifestyles strike many of us as strangely out of proportion with enormous problems like climate change, urban air pollution, and the disappearance of tropical forests. We learn that glaciers are melting and sea levels are expected to rise due to global warming—and in response we are advised to ride a bicycle to work. Scientists tell us that one out of every five mammal species in the world is threatened with extinction, and we react by switching coffee brands. Is it any wonder that people despair that real solutions are not within their grasp? You may suspect that tackling these gargantuan problems will require something more—but what? The answer, it turns out, can be found in a mountain of books and research articles published by thousands of social scientists over the past quarter century. But their discoveries have remained largely hidden from public view.
Conference papers on the topic "Global news stream"
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Zimmermann, Max, Irene Ntoutsi, Zaigham Faraz Siddiqui, Myra Spiliopoulou, and Hans-Peter Kriegel. "Discovering global and local bursts in a stream of news." In the 27th Annual ACM Symposium. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2245276.2245433.
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Guo, Lichao, Hongye Su, and Yu Qu. "A New Algorithm for Mining Global Frequent Itemsets in a Stream." In 2009 Sixth International Conference on Fuzzy Systems and Knowledge Discovery. IEEE, 2009. http://dx.doi.org/10.1109/fskd.2009.265.
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Chakraborty, Sunandan, and Lakshminarayanan Subramanian. "Extracting signals from news streams for disease outbreak prediction." In 2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP). IEEE, 2016. http://dx.doi.org/10.1109/globalsip.2016.7906051.
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Wei, Dai, Gao Feng, and Yong Bai. "Global Analysis of Ultra-Deepwater Drilling Risers." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79912.
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In recent years, the exploration activity of oil and gas industry in ultra deepwater is numerous. Global offshore industry is building systems today for drilling in even deeper water, progressively using new technologies, and significantly extending existing technologies. This is the general trend in the offshore oil and gas industry. So the technology of Ultra-Deepwater Risers, which is the main tool in drilling of oil, is more and more standard. This paper manly focuses on the global analysis of the drilling risers. And it is divided into two parts, operability analysis and hang-off analysis that are used to check the design of the Riser. In the paper, the following is discussed: 1. Calculation of the rotation angle and stress of the Riser in the drilling mode, as well as the stroke of the telescopic joint; 2. Determination of the operability envelop; 3. Calculation of the rotation angle and stress of the Riser on the hang-off condition, and the telescopic joint’s stroke; 4. Determination of the number of the buoyancy module; 5. Check all the worked out values according to the API standard. From all the above, it is obtained that the operability envelop is relatively small on the harsh condition and the number of the buoyancy modules is a little large. And above all, the design of this Riser is successful.
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Moriwaki, Ichiro, Syunpei Ogaya, and Koji Watanabe. "Stress Analysis of Face Gear Tooth Subject to Distributed Load Using Global Local Finite Element Method (GLFEM)." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48037.
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The present paper describes a stress analysis of a face gear tooth subject to a distributed load. The distributed load was determined from an initial mismatch between meshing tooth flanks through geometrical analysis. A new global local finite element method was used for the analysis. In the global local finite element method, an analytical domain is divided into two parts; a global domain in which fields are defined by an analytical solution derived from a classical elastic theory, and a local domain in which fields defined by a finite element solution. Furthermore, tooth flank film elements, which enable boundary conditions on tooth flanks to be easily represented, are taken as the global domain. The calculations were performed for face gear pairs with various misalignments. Crowning modifications along lead were given to pinions, and the effect of the modifications on tooth stress distribution in a face gear tooth was discussed. As a result, both contact and bending stresses were not so large. When there are some misalignments, only contact stress increased. However, the crowning on a pinion tooth was effective for the reduction of the contact stress. Furthermore, face gear with linear profiles; i.e., approximated profiles, were also discussed. Then, it was confirmed that this profile is good approximation.
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Wang, Dexin, William Liss, and Ainan Bao. "Water Reclamation From High Moisture Content Waste Heat Streams." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63513.
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A new waste heat and water recovery technology based on a nanoporous ceramic membrane water vapor separation mechanism was developed, to extract the water vapor and its latent heat from low temperature high moisture content waste gas streams. For the water reclamation process, water vapor condenses inside the membrane pores and passes through to the permeate side which is in direct contact with a low-temperature water stream. Contaminants such as CO2, O2, NOx, and SO2 are inhibited from passing through the membrane by its high selectivity. The recovered water is of high quality and mineral free, therefore can be used as supplemental makeup water for almost all industrial processes. The membrane based technology has been first developed and demonstrated for industrial boiler flue gas heat and water recovery. Now it is being developed for wider applications, from residential humidification, commercial laundry, biomass production to utility boilers. The increased application areas will greatly enhance waste heat and water recovery potentials worldwide, to save both energy and water, and benefit the global environment. In this paper, the technology development process, and several demonstrations for different applications are discussed in details.
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Klementis, Jennifer D., Shenwei Zhang, Jonathan Law, Maria Pino, and Jason Yan. "Practical Improvements to Surface Loading Assessment: Building Accuracy, Efficiency and Transparency." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78633.
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This paper presents a tool for surface loading stress analysis that was developed in-house by TransCanada (TCPL). This tool utilizes fundamentals of the surface loading assessment method developed by Kiefner & Associates Inc. (KAI) for Canadian Energy Pipeline Association (CEPA), but incorporated many advanced functionalities to improve the accuracy, efficiency and transparency of the analysis. The new functions of the tool include the batch analysis, multiple angle analysis, generic/site-specific loading analysis, graphical display of stress distributions for refined assessment, user-defined impact factor and automated reporting for documentation of surface loading calculations. This tool also incorporated the improved numerical algorithm for longitudinal global bending stress considering the actual live load pressure distribution over a certain length of pipeline. The accuracy of the developed tool was validated by comparing it to the KAI tool. The improved algorithm for longitudinal global bending stress calculation reduces the conservatism of the longitudinal global bending stress compared to the original simplified method but does not sacrifice safety, which has been demonstrated by comparison with the experimental results. The new functionalities improved the business efficiency and maintains safety and regulatory compliance.
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Tabiei, Ala, and Romil R. Tanov. "A Local/Global Sandwich Homogenization Procedure for Finite Element Simulation." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0381.
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Abstract A new finite element approach to sandwich shells is proposed. It uses existing shell finite elements formulated for homogeneous shells. The “sandwich” nature of the problem is hidden from the main finite element program. Based on several assumptions the proposed homogenization procedure calculates stress increments in a homogeneous fictitious material, called “equivalent”, which correspond to the strain increments in the equivalent material points. The stresses in the equivalent material are calculated based on the stress and strain fields in the sandwich layers, which are determined from the incoming strain field for the equivalent material. This procedure is most suitable for including strain softening and other material nonlinear behavior. The approach can be combined with shell elements formulated for homogeneous materials, based on Reissner-Mindlin shell theory or with elements based on a higher order shell theory. It avoids the necessity of formulating special shell elements for sandwich constructions, which in most cases, due to their large number of degrees of freedom, significantly decrease the computational efficiency of the finite element analysis. The sandwich homogenization procedure is combined with a composite micromechanics-based model for woven composites to analyze sandwich shells with woven fabric faces.
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Zheng, Yu, David T. Miyamoto, Ben S. Wittner, James P. Sullivan, Nicola Aceto, Nicole Vincent Jordan, Min Yu, et al. "Abstract 2679: Induction of β-globin protects circulating tumor cells from oxidative stress during dissemination." In Proceedings: AACR 107th Annual Meeting 2016; April 16-20, 2016; New Orleans, LA. American Association for Cancer Research, 2016. http://dx.doi.org/10.1158/1538-7445.am2016-2679.
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Kala, Zdeněk. "Global sensitivity analysis of failure probability caused by fatigue crack propagation." In The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.054.
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The probability of failure of a load bearing steel member is investigated using a new type of global sensitivity analysis subordinated to contrasts. The main objective of the probability-oriented sensitivity analysis is structural reliability. The structural reliability methodology uses random variables as inputs. The subject of interest is the identification of those random variables that are most important when the limit state of a steel bridge member is reached. The limit state is defined by the occurrence of brittle fracture, which results from stress changes caused by multiple repeated loads. The propagation of a single-edge crack from initial to critical size is analysed using linear fracture mechanics. The failure probability and sensitivity indices are calculated using sampling-based methods. The sensitivity indices are estimated using double-nested-loop simulation of the Latin Hypercube Sampling method. New findings indicate that interaction effects among input variables strongly influence the probability of failure especially at the beginning of the operating period.
Reports on the topic "Global news stream"
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Letcher, Theodore, Justin Minder, and Patrick Naple. Understanding and improving snow processes in Noah-MP over the Northeast United States via the New York State Mesonet. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45060.
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Snow is a critical component of the global hydrologic cycle and is a key input to river and stream flow forecasts. In 2016, the National Oceanic and Atmospheric Administration launched the National Water Model (NWM) to provide a high-fidelity numerical forecast of streamflow integrated with the broader atmospheric prediction modeling framework. The NWM is coupled to the atmospheric model using the Noah-MP land surface modeling framework. While snow in Noah-MP has been consistently evaluated in the western United States, less attention has been paid to understanding and optimizing its performance in the Northeast US (NEUS). The newly installed New York State Mesonet (NYSM), a network of high-quality surface meteorological stations distributed across New York State, provides a unique opportunity to evaluate Noah-MP performance in the NEUS. In this report, we document the methodology used to perform single-column simulations using meteorological inputs from the NYSM and compare the point evaluations against baseline NWM performance. We further discuss how enhanced surface energy balance measurements at a selection of NYSM sites can be used to evaluate specific components of Noah-MP and present initial results.
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Ron, Eliora, and Eugene Eugene Nester. Global functional genomics of plant cell transformation by agrobacterium. United States Department of Agriculture, March 2009. http://dx.doi.org/10.32747/2009.7695860.bard.
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The aim of this study was to carry out a global functional genomics analysis of plant cell transformation by Agrobacterium in order to define and characterize the physiology of Agrobacterium in the acidic environment of a wounded plant. We planed to study the proteome and transcriptome of Agrobacterium in response to a change in pH, from 7.2 to 5.5 and identify genes and circuits directly involved in this change. Bacteria-plant interactions involve a large number of global regulatory systems, which are essential for protection against new stressful conditions. The interaction of bacteria with their hosts has been previously studied by genetic-physiological methods. We wanted to make use of the new capabilities to study these interactions on a global scale, using transcription analysis (transcriptomics, microarrays) and proteomics (2D gel electrophoresis and mass spectrometry). The results provided extensive data on the functional genomics under conditions that partially mimic plant infection and – in addition - revealed some surprising and significant data. Thus, we identified the genes whose expression is modulated when Agrobacterium is grown under the acidic conditions found in the rhizosphere (pH 5.5), an essential environmental factor in Agrobacterium – plant interactions essential for induction of the virulence program by plant signal molecules. Among the 45 genes whose expression was significantly elevated, of special interest is the two-component chromosomally encoded system, ChvG/I which is involved in regulating acid inducible genes. A second exciting system under acid and ChvG/Icontrol is a secretion system for proteins, T6SS, encoded by 14 genes which appears to be important for Rhizobium leguminosarum nodule formation and nitrogen fixation and for virulence of Agrobacterium. The proteome analysis revealed that gamma aminobutyric acid (GABA), a metabolite secreted by wounded plants, induces the synthesis of an Agrobacterium lactonase which degrades the quorum sensing signal, N-acyl homoserine lactone (AHL), resulting in attenuation of virulence. In addition, through a transcriptomic analysis of Agrobacterium growing at the pH of the rhizosphere (pH=5.5), we demonstrated that salicylic acid (SA) a well-studied plant signal molecule important in plant defense, attenuates Agrobacterium virulence in two distinct ways - by down regulating the synthesis of the virulence (vir) genes required for the processing and transfer of the T-DNA and by inducing the same lactonase, which in turn degrades the AHL. Thus, GABA and SA with different molecular structures, induce the expression of these same genes. The identification of genes whose expression is modulated by conditions that mimic plant infection, as well as the identification of regulatory molecules that help control the early stages of infection, advance our understanding of this complex bacterial-plant interaction and has immediate potential applications to modify it. We expect that the data generated by our research will be used to develop novel strategies for the control of crown gall disease. Moreover, these results will also provide the basis for future biotechnological approaches that will use genetic manipulations to improve bacterial-plant interactions, leading to more efficient DNA transfer to recalcitrant plants and robust symbiosis. These advances will, in turn, contribute to plant protection by introducing genes for resistance against other bacteria, pests and environmental stress.
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Pullammanappallil, Pratap, Haim Kalman, and Jennifer Curtis. Investigation of particulate flow behavior in a continuous, high solids, leach-bed biogasification system. United States Department of Agriculture, January 2015. http://dx.doi.org/10.32747/2015.7600038.bard.
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Recent concerns regarding global warming and energy security have accelerated research and developmental efforts to produce biofuels from agricultural and forestry residues, and energy crops. Anaerobic digestion is a promising process for producing biogas-biofuel from biomass feedstocks. However, there is a need for new reactor designs and operating considerations to process fibrous biomass feedstocks. In this research project, the multiphase flow behavior of biomass particles was investigated. The objective was accomplished through both simulation and experimentation. The simulations included both particle-level and bulk flow simulations. Successful computational fluid dynamics (CFD) simulation of multiphase flow in the digester is dependent on the accuracy of constitutive models which describe (1) the particle phase stress due to particle interactions, (2) the particle phase dissipation due to inelastic interactions between particles and (3) the drag force between the fibres and the digester fluid. Discrete Element Method (DEM) simulations of Homogeneous Cooling Systems (HCS) were used to develop a particle phase dissipation rate model for non-spherical particle systems that was incorporated in a two-fluid CFDmultiphase flow model framework. Two types of frictionless, elongated particle models were compared in the HCS simulations: glued-sphere and true cylinder. A new model for drag for elongated fibres was developed which depends on Reynolds number, solids fraction, and fibre aspect ratio. Schulze shear test results could be used to calibrate particle-particle friction for DEM simulations. Several experimental measurements were taken for biomass particles like olive pulp, orange peels, wheat straw, semolina, and wheat grains. Using a compression tester, the breakage force, breakage energy, yield force, elastic stiffness and Young’s modulus were measured. Measurements were made in a shear tester to determine unconfined yield stress, major principal stress, effective angle of internal friction and internal friction angle. A liquid fludized bed system was used to determine critical velocity of fluidization for these materials. Transport measurements for pneumatic conveying were also assessed. Anaerobic digestion experiments were conducted using orange peel waste, olive pulp and wheat straw. Orange peel waste and olive pulp could be anaerobically digested to produce high methane yields. Wheat straw was not digestible. In a packed bed reactor, anaerobic digestion was not initiated above bulk densities of 100 kg/m³ for peel waste and 75 kg/m³ for olive pulp. Interestingly, after the digestion has been initiated and balanced methanogenesis established, the decomposing biomass could be packed to higher densities and successfully digested. These observations provided useful insights for high throughput reactor designs. Another outcome from this project was the development of low cost devices to measure methane content of biogas for off-line (US$37), field (US$50), and online (US$107) applications.
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Cavallo, Eduardo A., Arturo Galindo, Victoria Nuguer, and Andrew Powell. Open configuration options 2022 Latin American and Caribbean Macroeconomic Report: From Recovery to Renaissance: Turning Crisis into Opportunity. Inter-American Development Bank, March 2022. http://dx.doi.org/10.18235/0004180.
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Economic growth in Latin America and the Caribbean was stronger than expected in 2021 but waned at the start of 2022. High commodity prices due to the war between Russia and Ukraine will provide a boost to exporters, while imposing significant costs on commodity importers and pushing up inflation across countries. The ongoing conflict, together with policy normalization in advanced economies, carries significant risks for the region. Volatility in financial markets could depress investment and bring down growth further. Policymakers need to take urgent measures to boost inclusive growth. As minor fixes are unlikely to result in notable benefits, governments should consider more fundamental resets of policy frameworks. This report analyzes growth prospects, monetary policy, and external and financial sectors. The recommendations stress the need for a new architecture for both fiscal and labor market policies. Policymakers should seize the window of opportunity provided by the COVID-19 crisis and global security concerns to improve the outlook for the region.
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Miller, Gad, and Jeffrey F. Harper. Pollen fertility and the role of ROS and Ca signaling in heat stress tolerance. United States Department of Agriculture, January 2013. http://dx.doi.org/10.32747/2013.7598150.bard.
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The long-term goal of this research is to understand how pollen cope with stress, and identify genes that can be manipulated in crop plants to improve reproductive success during heat stress. The specific aims were to: 1) Compare heat stress dependent changes in gene expression between wild type pollen, and mutants in which pollen are heat sensitive (cngc16) or heat tolerant (apx2-1). 2) Compare cngc16 and apx2 mutants for differences in heat-stress triggered changes in ROS, cNMP, and Ca²⁺ transients. 3) Expand a mutant screen for pollen with increased or decreased thermo-tolerance. These aims were designed to provide novel and fundamental advances to our understanding of stress tolerance in pollen reproductive development, and enable research aimed at improving crop plants to be more productive under conditions of heat stress. Background: Each year crop yields are severely impacted by a variety of stress conditions, including heat, cold, drought, hypoxia, and salt. Reproductive development in flowering plants is highly sensitive to hot or cold temperatures, with even a single hot day or cold night sometimes being fatal to reproductive success. In many plants, pollen tube development and fertilization is often the weakest link. Current speculation about global climate change is that most agricultural regions will experience more extreme environmental fluctuations. With the human food supply largely dependent on seeds, it is critical that we consider ways to improve stress tolerance during fertilization. The heat stress response (HSR) has been intensively studied in vegetative tissues, but is poorly understood during reproductive development. A general paradigm is that HS is accompanied by increased production of reactive oxygen species (ROS) and induction of ROS-scavenging enzymes to protect cells from excess oxidative damage. The activation of the HSR has been linked to cytosolic Ca²⁺ signals, and transcriptional and translational responses, including the increased expression of heat shock proteins (HSPs) and antioxidative pathways. The focus of the proposed research was on two mutations, which have been discovered in a collaboration between the Harper and Miller labs, that either increase or decrease reproductive stress tolerance in a model plant, Arabidopsis thaliana (i.e., cngc16--cyclic nucleotide gated channel 16, apx2-1--ascorbate peroxidase 2,). Major conclusions, solutions, achievements. Using RNA-seq technology, the expression profiles of cngc16 and apx2 pollen grains were independently compared to wild type under favourable conditions and following HS. In comparison to a wild type HSR, there were 2,776 differences in the transcriptome response in cngc16 pollen, consistent with a model in which this heat-sensitive mutant fails to enact or maintain a normal wild-type HSR. In a comparison with apx2 pollen, there were 900 differences in the HSR. Some portion of these 900 differences might contribute to an improved HSR in apx2 pollen. Twenty-seven and 42 transcription factor changes, in cngc16 and apx2-1, respectively, were identified that could provide unique contributions to a pollen HSR. While we found that the functional HS-dependent reprogramming of the pollen transcriptome requires specific activity of CNGC16, we identified in apx2 specific activation of flavonol-biosynthesis pathway and auxin signalling that support a role in pollen thermotolerance. Results from this study have identified metabolic pathways and candidate genes of potential use in improving HS tolerance in pollen. Additionally, we developed new FACS-based methodology that can quantify the stress response for individual pollen in a high-throughput fashion. This technology is being adapted for biological screening of crop plant’s pollen to identify novel thermotolerance traits. Implications, both scientific and agricultural. This study has provided a reference data on the pollen HSR from a model plant, and supports a model that the HSR in pollen has many differences compared to vegetative cells. This provides an important foundation for understanding and improving the pollen HSR, and therefor contributes to the long-term goal of improving productivity in crop plants subjected to temperature stress conditions. A specific hypothesis that has emerged from this study is that pollen thermotolerance can be improved by increasing flavonol accumulation before or during a stress response. Efforts to test this hypothesis have been initiated, and if successful have the potential for application with major seed crops such as maize and rice.
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Ahluwalia, Manvir, Katie Shillington, and Jennifer Irwin. The Relationship Between Resilience and Mental Health of Undergraduate Students: A Scoping Review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, July 2022. http://dx.doi.org/10.37766/inplasy2022.7.0075.
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Review question / Objective: The aim of this scoping review was to examine what is known about the relationship between the resilience and mental health of undergraduate students enrolled in university or college programs globally. Background: For many undergraduate students, higher education acts as a personal investment in preparation for the workforce, while ultimately allowing students to develop cultural capital (Kromydas, 2017). The transition to university or college is also accompanied by important life changes such as moving to a new campus, meeting new people, and increasing self-efficacy to maintain independent responsibilities (i.e., meeting deadlines, completing household chores, and managing expenses; Henri et al., 2018). As a result, navigating these life changes can contribute to feelings of isolation, as many undergraduate students are disconnected from their friends and families (Diehl et al., 2018). Saleh and colleagues (2017) found that young adults in university or college experience higher levels of stress compared to their non-student counterparts. These stressors are attributed to a more challenging workload compared to that of high school, living with new roommates, and financial concerns (Karyotaki et al., 2020). In the face of these stressors, many undergraduate students are likely to experience mental health challenges either for the first time or in an exacerbated manner, potentially depleting their resilience (Abiola, 2017).
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Lers, Amnon, Majid R. Foolad, and Haya Friedman. genetic basis for postharvest chilling tolerance in tomato fruit. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7600014.bard.
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ABSTRACT Postharvest losses of fresh produce are estimated globally to be around 30%. Reducing these losses is considered a major solution to ensure global food security. Storage at low temperatures is an efficient practice to prolong postharvest performance of crops with minimal negative impact on produce quality or human health and the environment. However, many fresh produce commodities are susceptible to chilling temperatures, and the application of cold storage is limited as it would cause physiological chilling injury (CI) leading to reduced produce quality. Further, the primary CI becomes a preferred site for pathogens leading to decay and massive produce losses. Thus, chilling sensitive crops should be stored at higher minimal temperatures, which curtails their marketing life and in some cases necessitates the use of other storage strategies. Development of new knowledge about the biological basis for chilling tolerance in fruits and vegetables should allow development of both new varieties more tolerant to cold, and more efficient postharvest storage treatments and storage conditions. In order to improve the agricultural performance of modern crop varieties, including tomato, there is great potential in introgression of marker-defined genomic regions from wild species onto the background of elite breeding lines. To exploit this potential for improving tomato fruit chilling tolerance during postharvest storage, we have used in this research a recombinant inbred line (RIL) population derived from a cross between the red-fruited tomato wild species SolanumpimpinellifoliumL. accession LA2093 and an advanced Solanum lycopersicumL. tomato breeding line NCEBR-1, developed in the laboratory of the US co-PI. The original specific objectives were: 1) Screening of RIL population resulting from the cross NCEBR1 X LA2093 for fruit chilling response during postharvest storage and estimation of its heritability; 2) Perform a transcriptopmic and bioinformatics analysis for the two parental lines following exposure to chilling storage. During the course of the project, we learned that we could measure greater differences in chilling responses among specific RILs compared to that observed between the two parental lines, and thus we decided not to perform transcriptomic analysis and instead invest our efforts more on characterization of the RILs. Performing the transcriptomic analysis for several RILs, which significantly differ in their chilling tolerance/sensitivity, at a later stage could result with more significant insights. The RIL population, (172 lines), was used in field experiment in which fruits were examined for chilling sensitivity by determining CI severity. Following the field experiments, including 4 harvest days and CI measurements, two extreme tails of the response distribution, each consisting of 11 RILs exhibiting either high sensitivity or tolerance to chilling stress, were identified and were further examined for chilling response in greenhouse experiments. Across the RILs, we found significant (P < 0.01) correlation between field and greenhouse grown plants in fruit CI. Two groups of 5 RILs, whose fruits exhibited reproducible chilling tolerant/sensitive phenotypes in both field and greenhouse experiments, were selected for further analyses. Numerous genetic, physiological, biochemical and molecular variations were investigated in response to postharvest chilling stress in the selected RILs. We confirmed the differential response of the parental lines of the RIL population to chilling stress, and examined the extent of variation in the RIL population in response to chilling treatment. We determined parameters which would be useful for further characterization of chilling response in the RIL population. These included chlorophyll fluorescence Fv/Fm, water loss, total non-enzymatic potential of antioxidant activity, ascorbate and proline content, and expression of LeCBF1 gene, known to be associated with cold acclimation. These parameters could be used in continuation studies for the identification and genetic mapping of loci contributing to chilling tolerance in this population, and identifying genetic markers associated with chilling tolerance in tomato. Once genetic markers associated with chilling tolerance are identified, the trait could be transferred to different genetic background via marker-assisted selection (MAS) and breeding. The collaborative research established in this program has resulted in new information and insights in this area of research and the collaboration will be continued to obtain further insights into the genetic, molecular biology and physiology of postharvest chilling tolerance in tomato fruit. The US Co-PI, developed the RIL population that was used for screening and measurement of the relevant chilling stress responses and conducted statistical analyses of the data. Because we were not able to grow the RIL population under field conditions in two successive generations, we could not estimate heritability of response to chilling temperatures. However, we plan to continue the research, grow the RIL progeny in the field again, and determine heritability of chilling tolerance in a near future. The IS and US investigators interacted regularly and plan to continue and expand on this study, since combing the expertise of the Co-PI in genetics and breeding with that of the PI in postharvest physiology and molecular biology will have great impact on this line of research, given the significant findings of this one-year feasibility project.
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Schuster, Gadi, and David Stern. Integration of phosphorus and chloroplast mRNA metabolism through regulated ribonucleases. United States Department of Agriculture, August 2008. http://dx.doi.org/10.32747/2008.7695859.bard.
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New potential for engineering chloroplasts to express novel traits has stimulated research into relevant techniques and genetic processes, including plastid transformation and gene regulation. This proposal continued our long time BARD-funded collaboration research into mechanisms that influence chloroplast RNA accumulation, and thus gene expression. Previous work on cpRNA catabolism has elucidated a pathway initiated by endonucleolytic cleavage, followed by polyadenylation and exonucleolytic degradation. A major player in this process is the nucleus-encoded exoribonuclease/polymerasepolynucleotidephoshorylase (PNPase). Biochemical characterization of PNPase has revealed a modular structure that controls its RNA synthesis and degradation activities, which in turn are responsive to the phosphate (P) concentration. However, the in vivo roles and regulation of these opposing activities are poorly understood. The objectives of this project were to define how PNPase is controlled by P and nucleotides, using in vitro assays; To make use of both null and site-directed mutations in the PNPgene to study why PNPase appears to be required for photosynthesis; and to analyze plants defective in P sensing for effects on chloroplast gene expression, to address one aspect of how adaptation is integrated throughout the organism. Our new data show that P deprivation reduces cpRNA decay rates in vivo in a PNPasedependent manner, suggesting that PNPase is part of an organismal P limitation response chain that includes the chloroplast. As an essential component of macromolecules, P availability often limits plant growth, and particularly impacts photosynthesis. Although plants have evolved sophisticated scavenging mechanisms these have yet to be exploited, hence P is the most important fertilizer input for crop plants. cpRNA metabolism was found to be regulated by P concentrations through a global sensing pathway in which PNPase is a central player. In addition several additional discoveries were revealed during the course of this research program. The human mitochondria PNPase was explored and a possible role in maintaining mitochondria homeostasis was outlined. As polyadenylation was found to be a common mechanism that is present in almost all organisms, the few examples of organisms that metabolize RNA with no polyadenylation were analyzed and described. Our experiment shaded new insights into how nutrient stress signals affect yield by influencing photosynthesis and other chloroplast processes, suggesting strategies for improving agriculturally-important plants or plants with novel introduced traits. Our studies illuminated the poorly understood linkage of chloroplast gene expression to environmental influences other than light quality and quantity. Finely, our finding significantly advanced the knowledge about polyadenylation of RNA, the evolution of this process and its function in different organisms including bacteria, archaea, chloroplasts, mitochondria and the eukaryotic cell. These new insights into chloroplast gene regulation will ultimately support plant improvement for agriculture
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Ullman, Diane, James Moyer, Benjamin Raccah, Abed Gera, Meir Klein, and Jacob Cohen. Tospoviruses Infecting Bulb Crops: Evolution, Diversity, Vector Specificity and Control. United States Department of Agriculture, September 2002. http://dx.doi.org/10.32747/2002.7695847.bard.
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Objectives. The overall goal of the proposed research was to develop a mechanistic understanding of tospovirus evolution, diversity and vector specificity that could be applied to development of novel methods for limiting virus establishment and spread. Our specific objectives were: 1) To characterize newly intercepted tospoviruses in onion, Hippeastrum and other bulb crops and compare them with the known tomato spotted wilt virus (TSWV) and its isolates; 2) To characterize intra- and interspecific variation in the virus transmission by thrips of the new and distinct tospoviruses. and, 3) To determine the basis of vector specificity using biological, cellular and molecular approaches. Background. New tospoviruses infecting bulb crops were detected in Israel and the US in the mid-90s. Their plant host ranges and relationships with thrips vectors showed they differed from the type member of the Tospovirus genus, tomato spotted wilt virus (TSWV). Outbreaks of these new viruses caused serious crop losses in both countries, and in agricultural and ornamental crops elsewhere. In the realm of plant infecting viruses, the tospoviruses (genus: Tospovirus , family: Bunyaviridae ) are among the most aggressive emerging viruses. Tospoviruses are transmitted by several species of thrips in a persistent, propagative fashion and the relationships between the viruses and their thrips vectors are often specific. With the emergence of new tospoviruses, new thrips vector/tospovirus relationships have also arisen and vector specificities have changed. There is known specificity between thrips vector species and particular tospoviruses, although the cellular and molecular bases for this specificity have been elusive. Major conclusions, solutions and achievements. We demonstrated that a new tospovirus, iris yellow spot virus (IYSV) caused "straw bleaching" in onion (Allium cepa) and lisianthus necrosis in lisianthus (Eustoma russellianum). Characterization of virus isolates revealed genetic diversity among US, Brazilian, Dutch and Israeli isolates. IYSV was not seed transmitted, and in Israel, was not located in bulbs of infected plants. In the US, infected plants were generated from infected bulbs. The relationship between IYSV and Thrips tabaci was shown to be specific. Frankliniella occidentalis, the primary vector of many other tospoviruses, did not transmit IYSV isolates in Israel or the US. Furthermore, 1': tabaci populations varied in their transmission ability. Transmission was correlated to IYSV presence in thrips salivary glands. In Israel, surveys in onion fields revealed that the onion thrips, Thrips tabaci Lindeman was the predominant species and that its incidence was strongly related to that of IYSV infection. In contrast, in the U.S., T. tabaci and F. occidentalis were present in high numbers during the times sampled. In Israel, insecticides reduced onion thrips population and caused a significant yield increase. In the US, a genetic marker system that differentiates non-thrips transmissible isolates from thrips transmissible isolate demonstrated the importance of the M RNA to thrips transmission of tospoviruses. In addition, a symbiotic Erwinia was discovered in thrips and was shown to cause significant artifacts in certain types of virus binding experiments. Implications, scientific and agricultural. Rapid emergence of distinct tospoviruses and new vector relationships is profoundly important to global agriculture. We advanced the understanding of IYSV in bulb crops and its relationships with thrips vector species. The knowledge gained provided growers with new strategies for control and new tools for studying the importance of particular viral proteins in thrips specificity and transmission efficiency.
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Johra, Hicham. Performance overview of caloric heat pumps: magnetocaloric, elastocaloric, electrocaloric and barocaloric systems. Department of the Built Environment, Aalborg University, January 2022. http://dx.doi.org/10.54337/aau467469997.
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Heat pumps are an excellent solution to supply heating and cooling for indoor space conditioning and domestic hot water production. Conventional heat pumps are typically electrically driven and operate with a vapour-compression thermodynamic cycle of refrigerant fluid to transfer heat from a cold source to a warmer sink. This mature technology is cost-effective and achieves appreciable coefficients of performance (COP). The heat pump market demand is driven up by the urge to improve the energy efficiency of building heating systems coupled with the increase of global cooling needs for air-conditioning. Unfortunately, the refrigerants used in current conventional heat pumps can have a large greenhouse or ozone-depletion effect. Alternative gaseous refrigerants have been identified but they present some issues regarding toxicity, flammability, explosivity, low energy efficiency or high cost. However, several non-vapour-compression heat pump technologies have been invented and could be promising alternatives to conventional systems, with potential for higher COP and without the aforementioned refrigerant drawbacks. Among those, the systems based on the so-called “caloric effects” of solid-state refrigerants are gaining large attention. These caloric effects are characterized by a phase transition varying entropy in the material, resulting in a large adiabatic temperature change. This phase transition is induced by a variation of a specific external field applied to the solid refrigerant. Therefore, the magnetocaloric, elastocaloric, electrocaloric and barocaloric effects are adiabatic temperature changes in specific materials when varying the magnetic field, uniaxial mechanical stress, electrical field or hydrostatic pressure, respectively. Heat pump cycle can be built from these caloric effects and several heating/cooling prototypes were developed and tested over the last few decades. Although not a mature technology yet, some of these caloric systems are well suited to become new efficient and sustainable solutions for indoor space conditioning and domestic hot water production. This technical report (and the paper to which this report is supplementary materials) aims to raise awareness in the building community about these innovative caloric systems. It sheds some light on the recent progress in that field and compares the performance of caloric systems with that of conventional vapour-compression heat pumps for building applications.