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Sample records for curie actions people

  1. The Marie Curie Actions at CERN – reaching out beyond particle physics and Europe

    CERN Multimedia

    EU Projects Office

    2014-01-01

    The European Commission’s Marie Curie Actions have been a pillar of the EU Framework Programmes for several decades as a means of promoting career development and enhancing mobility of researchers in Europe. This corresponds nicely to one of CERN’s main missions: to train the next generation of scientists and engineers.   The European Commissioner for Education, Culture, Multilingualism, Sport, Media and Youth, Androulla Vassiliou (centre) met the Marie Curie Fellows on her visit to CERN in April 2013. CERN has been pleased to be a major player in the Marie Curie Actions under the Sixth and Seventh Framework Programmes (FP6 from 2002 to 2006 and FP7 from 2007 to 2013), being one of the most successful participants in Europe. Under FP7, CERN was ranked first in Switzerland and fifth in Europe against stiff competition in terms of overall funding. Participation was in all of the Marie Curie Actions: Initial Training Networks, Industry-Academia Partnership Pathways, IRSES, CO...

  2. Madame Curie

    CERN Document Server

    Eve, Curie

    1942-01-01

    Marie Curie is a women who changed the face of science for all time, not just because of her discovery of the radioactive element Radium and her work with it, but because of her incredible strides forward in a such a male dominated world as laboratory science at the turn of the 19th century. This is the Madame Curie many people know but here is a biography written by her daughter Eve that shows her human side, in a way that can only be viewed and admired from a family member describing her as a caring mother, devoted and passionate wife. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive.

  3. Developing translational medicine professionals: the Marie Skłodowska-Curie action model.

    Science.gov (United States)

    Petrelli, Alessandra; Prakken, Berent J; Rosenblum, Norman D

    2016-11-29

    End goal of translational medicine is to combine disciplines and expertise to eventually promote improvement of the global healthcare system by delivering effective therapies to individuals and society. Well-trained experts of the translational medicine process endowed with profound knowledge of biomedical technology, ethical and clinical issues, as well as leadership and teamwork abilities are essential for the effective development of tangible therapeutic products for patients. In this article we focus on education and, in particular, we discuss how programs providing training on the broad spectrum of the translational medicine continuum have still a limited degree of diffusion and do not provide professional support and mentorship in the long-term, resulting in the lack of well established professionals of translational medicine (TMPs) in the scientific community. Here, we describe the Marie Skłodowska-Curie Actions program ITN-EUtrain (EUropean Translational tRaining for Autoimmunity & Immune manipulation Network) where training on the Translational Medicine machinery was integrated with education on professional and personal skills, mentoring, and a long-lasting network of TMPs.

  4. Marie Curie; Marie Curie

    Energy Technology Data Exchange (ETDEWEB)

    Trotereau, J.

    2011-07-01

    The legend has only retained from Marie Curie (1867-1934) the image of a hard and brilliant worker, pioneer in the radioactivity domain, and who awarded twice the Nobel Price. Behind the scientist, there is a women, Marya Salomea Sklodowska, the 'Polish', who was considered during some time as an 'alien', an 'atheistic intellectual', an 'emancipated women'. When she died alone in July 1934, after an exhausting life of labour, her funeral led to no official ceremony or speech. This small book summarizes the biography of the most famous female scientist in the world

  5. Peer Review Evaluation Process of Marie Curie Actions under EU's Seventh Framework Programme for Research.

    Directory of Open Access Journals (Sweden)

    David G Pina

    Full Text Available We analysed the peer review of grant proposals under Marie Curie Actions, a major EU research funding instrument, which involves two steps: an independent assessment (Individual Evaluation Report, IER performed remotely by 3 raters, and a consensus opinion reached during a meeting by the same raters (Consensus Report, CR. For 24,897 proposals evaluated from 2007 to 2013, the association between average IER and CR scores was very high across different panels, grant calls and years. Median average deviation (AD index, used as a measure of inter-rater agreement, was 5.4 points on a 0-100 scale (interquartile range 3.4-8.3, overall, demonstrating a good general agreement among raters. For proposals where one rater disagreed with the other two raters (n=1424; 5.7%, or where all 3 raters disagreed (n=2075; 8.3%, the average IER and CR scores were still highly associated. Disagreement was more frequent for proposals from Economics/Social Sciences and Humanities panels. Greater disagreement was observed for proposals with lower average IER scores. CR scores for proposals with initial disagreement were also significantly lower. Proposals with a large absolute difference between the average IER and CR scores (≥10 points; n=368, 1.5% generally had lower CR scores. An inter-correlation matrix of individual raters' scores of evaluation criteria of proposals indicated that these scores were, in general, a reflection of raters' overall scores. Our analysis demonstrated a good internal consistency and general high agreement among raters. Consensus meetings appear to be relevant for particular panels and subsets of proposals with large differences among raters' scores.

  6. Peer Review Evaluation Process of Marie Curie Actions under EU's Seventh Framework Programme for Research.

    Science.gov (United States)

    Pina, David G; Hren, Darko; Marušić, Ana

    2015-01-01

    We analysed the peer review of grant proposals under Marie Curie Actions, a major EU research funding instrument, which involves two steps: an independent assessment (Individual Evaluation Report, IER) performed remotely by 3 raters, and a consensus opinion reached during a meeting by the same raters (Consensus Report, CR). For 24,897 proposals evaluated from 2007 to 2013, the association between average IER and CR scores was very high across different panels, grant calls and years. Median average deviation (AD) index, used as a measure of inter-rater agreement, was 5.4 points on a 0-100 scale (interquartile range 3.4-8.3), overall, demonstrating a good general agreement among raters. For proposals where one rater disagreed with the other two raters (n=1424; 5.7%), or where all 3 raters disagreed (n=2075; 8.3%), the average IER and CR scores were still highly associated. Disagreement was more frequent for proposals from Economics/Social Sciences and Humanities panels. Greater disagreement was observed for proposals with lower average IER scores. CR scores for proposals with initial disagreement were also significantly lower. Proposals with a large absolute difference between the average IER and CR scores (≥10 points; n=368, 1.5%) generally had lower CR scores. An inter-correlation matrix of individual raters' scores of evaluation criteria of proposals indicated that these scores were, in general, a reflection of raters' overall scores. Our analysis demonstrated a good internal consistency and general high agreement among raters. Consensus meetings appear to be relevant for particular panels and subsets of proposals with large differences among raters' scores.

  7. Marie Curie

    National Research Council Canada - National Science Library

    Serna M., Edgar

    2011-01-01

    Maria Sklodowska--Marie Curie--fue pionera en la ciencia de la radiactividad; es mejor conocida como la descubridora de los elementos radiactivos polonio y radio, y como el primer cientifico en ganar dos premios Nobel: Fisica y Quimica...

  8. The leadership shift-"From directing people to action to inspiring people to action".

    Science.gov (United States)

    Swan, Bruce Harry

    2017-09-01

    The leadership shift from directing people to action to inspiring people to action will focus on the coach approach to leadership and will clearly demonstrate how taking this approach not only gives lasting cultural change but also builds leadership capacity. Current examples of healthcare organizations that have implemented this approach will be shared along with the use of best practices coaching skills that embrace the International Coach Federation core competencies and code of ethics.

  9. Nickel Curie Point Engine

    Science.gov (United States)

    Chiaverina, Chris; Lisensky, George

    2014-01-01

    Ferromagnetic materials such as nickel, iron, or cobalt lose the electron alignment that makes them attracted to a magnet when sufficient thermal energy is added. The temperature at which this change occurs is called the "Curie temperature," or "Curie point." Nickel has a Curie point of 627 K, so a candle flame is a sufficient…

  10. Pierre y Marie Curie

    OpenAIRE

    Guevara, Juan de Dios; Facultad de Farmacia y Bioquímica de la Universidad Nacional Mayor de San Marcos, Lima, Perú.

    2014-01-01

    Pocas veces se encuentran dos vidas tan profundamente identificadas como las de Pierre Curie y María Sklodowska.Pierre Curie, nació en París el 15 de mayo de 1859; realiza sus estudios preparatorios privadamente, hasta que a los 16 años aprueba su bachillerato, para seguir luego sus estudios en la Facultad de Ciencias donde obtiene su licenciatura en Física en 1877. Su amor a las ciencias naturales parece haberlo adquirido de su padre, Eugenio, con quien realiza sus primeras experiencias. Con...

  11. ACE Action Fellowship Bridges Climate Education into Action for Young People

    Science.gov (United States)

    Anderson, R. K.

    2016-12-01

    Alliance for Climate Education educates young people on the science of climate change and empowers them to take action. Since 2009, ACE has educated over two million students and trained more than 4,000 young leaders. The ACE Action Fellowship is a yearlong training program that gives young people the knowledge, skills and confidence to be strong climate leaders. Here, we present the results of the first year of evaluation of the Fellowship program in the 2014-15 school year. Sixty high school students completed matched surveys before and after completing the program. Students were evaluated on skills learned, actions taken, confidence gained, civic engagement, and plans to continue action on climate in the future. Results show that the Fellowship increases young people's confidence: 52% of Fellows report an increase in confidence in leading a group of peers on a climate-related campaign. Fellows also gained leadership skills. More than half of Fellows say they improved in the areas of recruitment, interpersonal communication skills, campaign planning, and public speaking. 50% of Fellows reported an increase in their likelihood of seeking elected office when of age. The Fellowship positively influences young people's intent to study a climate, energy or sustainability-related field. 63% of Fellows identify as people of color. Notably, despite entering the Fellowship with significantly lower self-ratings than white students in experience and skill sets, young people of color reported greater improvement in the areas of public speaking (25% improvement vs. 6% improvement) and petitioning (27% improvement vs. 1% improvement). These results show that the ACE Fellowship gives young people tangible skills and confidence that puts them on a path of climate leadership. Further evaluation will be done to expand the dataset, but early indications show that these young people are poised to make valuable contributions and bring a much needed diverse youth perspective to the

  12. Pierre curie, 1859-1906.

    Science.gov (United States)

    Mould, R F

    2007-04-01

    The year 2006 marked 100 years since the death of Pierre Curie. It is therefore appropriate that we remember his life and his work, which was cut short by his untimely death from an accident on the Pont Neuf, Paris, on April 19, 1906. He had already accomplished much during his life, both before the discovery of radium with Marie Curie, in work co-authored with his brother Jacques on piezoelectricity, and afterwards, when he published the results of several experimental studies with radium and radon. He came from a medical family, and his grandfather Pierre Curie was a famous homeopathic physician. He has, in print, unfairly been relegated to the background-his own scientific contributions having been overtaken by the fame of Marie Curie, probably because she outlived him by 28 years.

  13. CURIE: Cubesat Radio Interferometry Experiment

    Science.gov (United States)

    Sundkvist, D. J.; Saint-Hilaire, P.; Bain, H. M.; Bale, S. D.; Bonnell, J. W.; Hurford, G. J.; Maruca, B.; Martinez Oliveros, J. C.; Pulupa, M.

    2016-12-01

    The CUbesat Radio Interferometry Experiment (CURIE) is a proposed two-element radio interferometer, based on proven and developed digital radio receivers and designed to fit within a Cubesat platform. CURIE will launch as a 6U Cubesat and then separate into two 3U Cubesats once in orbit. CURIE measures radio waves from 0.1-19MHz, which must be measured from space, as those frequencies fall below the cutoff imposed by Earth's ionosphere. The principal science objective for CURIE is to use radio interferometry to study radio burst emissions from solar eruptive events such as flares and coronal mass ejections (CMEs) in the inner heliosphere, providing observations important for our understanding of the heliospheric space weather environment. The influence of space weather can be felt at Earth and other planets, as radiation levels increase and lead to auroral activity and geomagnetic effects. CURIE will be able to determine the location and size of radio burst source regions and then to track their movement outward from the Sun. In addition to the primary objective CURIE will measure the gradients of the local ionospheric density and electron temperature on the spatial scale of a few kilometers, as well as create an improved map of the radio sky at these unexplored frequencies. A space based radio interferometry observatory has long been envisioned, in orbit around the Earth or the Moon, or on the far side of the Moon. Beyond its important science objectives, CURIE will prove that the concept of a dedicated space-based interferometer can be realized by using relatively cheap Cubesats. CURIE will therefore not only provide new important science results but also serve as a pathfinder in the development of new space-based radio observation techniques for helio- and astro-physics.

  14. A jolly good call for Marie Curie Fellows

    CERN Multimedia

    2009-01-01

    A new funding opportunity to train young researchers has just been announced by the European Commission. One of the calls within FP7 Marie Curie Actions requests proposals for Initial Training Network (ITN) projects, with a deadline of 22 December 2009. Project proposals are strongly encouraged at CERN and authors can receive support and guidance from the Marie Curie Steering Group. Winnie Wong: "I wouldn’t have considered a PhD if I hadn’t been a Marie Curie fellow" Dan Savu: "It’s the best of both worlds: training plus working in an international organisation" ITN projects have one key aim: training. Academic and industrial partners work together to form a network to recruit and train Marie Curie Fellows. Fellows are young researchers (typically PhD-level) from any country who combine project-based research with tailor-made training programmes, ...

  15. Primary health care to elderly people: Occupational Therapy actions perspectives

    Directory of Open Access Journals (Sweden)

    Cassio Batista Alves

    2015-09-01

    Full Text Available In Brazil, Occupational Therapy (OT was legislated in 1969, and was introduced into the Primary Health Care (PHC in the 90s. At this level of care, the OT serves various stages of human development, including aging, in a perspective of care and active aging line, seeks to optimize opportunities for health, participation and safety, using clinical reasoning in order to plan, guide, conduct and reflect their actions in producing the line of care. This career considers human activities as part of the construction of the man himself as an expertise area and seeks to understand the relationships that the active human establishes in its life and health. This study aimed to verify the actions and identify the occupational therapy line of care with the elderly in APS. This is a qualitative study that used a semi-structured interview applied during April to May 2013 with six occupational therapists that cared for older people in the APS at Uberaba-MG. The data was analyzed using the Collective Subject Discourse (CSD technique. We observed that the OT actions to produce line of care for the elderly happen according to the general public care, whether individual or group, with the team during case discussions, referrals or work management and the territory during the territorial diagnosis and networks formation, all permeated by the principles of fairness, integrity, intersectoriality and clinical reasoning in OT.

  16. European Industrial Doctorates: Marie Curie Actions

    Science.gov (United States)

    European Commission, 2012

    2012-01-01

    European industrial doctorates are joint doctoral training projects funded by the European Union (EU) and open to all research fields. The project brings together an academic participant (university, research institution, etc.) and a company. They have to be established in two different EU Member States or associated countries. Associated partners…

  17. Aspectos históricos da visita de Marie Sklodowska Curie a Belo Horizonte

    Directory of Open Access Journals (Sweden)

    Cássius Klay Nascimento

    2011-01-01

    Full Text Available In the year 2011 it is celebrated the Marie Sklodowska Curie Nobel Prize centenary and the International Year of Chemistry. However, it is not generally known that Marie Sklodowska Curie, one of the greatest scientists of all time, visited Belo Horizonte, state of Minas Gerais, Brazil. She arrived by train at Belo Horizonte city on 16 August 1926, coming from Rio de Janeiro and accompanied by her daughter Irène Joliot-Curie. The scientists visited the Institute of Radium of Belo Horizonte. The approach in this work emphasizes the presence of Marie Sklodowska Curie in Belo Horizonte, exploring the admiration and respect that people had for her.

  18. From Ambivalence to Activism: Young People's Environmental Views and Actions

    Science.gov (United States)

    Partridge, Emma

    2008-01-01

    Do young people really take a particular interest in environmental issues, or are they apathetic? This paper considers what young people really think about the environment by drawing together and reviewing attitudinal polling and other research into young people's views. It seeks to challenge simplistic assumptions, and instead acknowledges the…

  19. Health actions prompted by health assessments for people with intellectual disability exceed actions recorded in general practitioners' records.

    Science.gov (United States)

    Byrne, Jacqueline H; Ware, Robert S; Lennox, Nicholas G

    2015-01-01

    People with intellectual disability experience inadequate health care and have unmet health needs that can go unidentified or be poorly managed. Health assessments have been shown to significantly increase short-term clinical activity for people with intellectual disability. The aim of this study was to more accurately quantify the effect of health assessments for people with intellectual disability by comparing health actions recorded in health assessment booklets to actions recorded in general practitioners' (GPs) records in the 12-month period following the health assessment. Participants were people with intellectual disability who had received a Comprehensive Health Assessment Program (CHAP), living in the community. The CHAP is a health assessment that is demonstrated to significantly increase health actions, compared with usual care, for people with intellectual disability. Data collected from three randomised controlled trials conducted in South-East Queensland, Australia, from 2000 to 2010 were pooled and analysed. The health assessment booklet contained significantly more information on health actions than GPs' records. Notably, hearing tests (risk ratio (RR) = 5.9; 95% confidence interval (CI) = 4.7-7.4), breast checks (RR = 3.9; 95% CI = 2.7-5.7), and skin examinations (RR = 7.9; 95% CI = 5.9-10.7) were more likely to be recorded in the CHAP booklet. Health assessments increase health actions for people with intellectual disability to a significantly greater extent than previously demonstrated.

  20. Speaking for the Common People and Taking Action for Women

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    WU QING has become a well-known figure among an increasing number of people in recent years. Those in the literary world know her as the daughter of Bing Xin, the most celebrated contemporary writer in the country. Wu has often participated in important events in literary circles on her mother’s behalf. People in academia know her as an excellent English professor at the Beijing University of Foreign Languages Studies. Her educational philosophy of teaching and cultivating morals simultaneously makes many of her

  1. Marie Curie during ORT4

    Science.gov (United States)

    2003-01-01

    Marie Curie rover drives down the rear ramp during Operational Readiness Test (ORT) 4.Pathfinder, a low-cost Discovery mission, is the first of a new fleet of spacecraft that are planned to explore Mars over thenext ten years. Mars Global Surveyor, already en route, arrives at Mars on September 11 to begin a two year orbital reconnaissance of the planet's composition, topography, and climate. Additional orbiters and landers will follow every 26 months.The Jet Propulsion Laboratory, Pasadena, CA, developed and manages the Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. JPL is an operating division of the California Institute of Technology (Caltech). The Imager for Mars Pathfinder (IMP) was developed by the University of Arizona Lunar and Planetary Laboratory under contract to JPL. Peter Smith is the Principal Investigator.

  2. Marie Curie during ORT6

    Science.gov (United States)

    2003-01-01

    Marie Curie sits on the lander petal prior to deployment during the pre launch Operations Readiness Test (ORT) 6.Pathfinder, a low-cost Discovery mission, is the first of a new fleet of spacecraft that are planned to explore Mars over thenext ten years. Mars Global Surveyor, already en route, arrives at Mars on September 11 to begin a two year orbital reconnaissance of the planet's composition, topography, and climate. Additional orbiters and landers will follow every 26 months.The Jet Propulsion Laboratory, Pasadena, CA, developed and manages the Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. JPL is an operating division of the California Institute of Technology (Caltech). The Imager for Mars Pathfinder (IMP) was developed by the University of Arizona Lunar and Planetary Laboratory under contract to JPL. Peter Smith is the Principal Investigator.

  3. Health inequity in people with intellectual disabilities: from evidence to action applying an appreciative inquiry approach

    NARCIS (Netherlands)

    Naaldenberg, J.; Banks, R.; Lennox, N.; Ouellette-Kunz, H.; Meijer, M.; Schrojenstein Lantman, H.M. van

    2015-01-01

    BACKGROUND: The current understanding of health inequities in people with intellectual disabilities does not readily translate into improvements in health status or health care. To identify opportunities for action, the 2013 IASSIDD health SIRG conference organized ten intensive workshops. MATERIALS

  4. CURIE-TEMPERATURE "SLATER-PAULING CURVE"

    OpenAIRE

    Kakehashi, Y.; Hosohata, O.

    1988-01-01

    The systematic variation of the Curie-temperature "Slater-Pauling curve" has been explained for the first time on the basis of the finite-temperature theory of the local environment effect. The peculiarity of the Curie temperatures in Fe-V, Fe-Ni, and Ni-Mn alloys is elucidated by using the effective exchange couplings.

  5. Radium, Marie Curie and modern science.

    Science.gov (United States)

    Langevin-Joliot, H

    1998-11-01

    In 1898, the discovery of two new elements, polonium and radium, reawakened interest in the topic of uranic rays discovered 2 years before by H. Becquerel. Radioactivity, a name coined by Marie Curie, became a major research field for decades. The contrasting personalities of Pierre Curie, already a first-rank physicist, and of the young Marie Curie-Sklodowska as they undertook their common work are described. It is shown how a well-chosen quantitative method and a systematic approach combining physics and chemistry led to the discovery within less than 1 year. The special role of radium and the determination of its atomic weight by Marie Curie followed by her long-term program for accumulating pure radium salts are emphasized. The first woman with a full professorship at a French University, Marie Curie created and managed the Radium Institute.

  6. Examining the Conflict and Interconnectedness of Young People's Ideas about Environmental Issues, Responsibility and Action

    Science.gov (United States)

    Wilks, Leigh; Harris, Neil

    2016-01-01

    Objective: Young people's environmental views are typically conflicted, with little recognition of the links between environmental issues or between environmental responsibility and action. The purpose of this study was to clarify whether young people's understanding of the environment is in conflict or whether they are forming interconnections…

  7. Examining the Conflict and Interconnectedness of Young People's Ideas about Environmental Issues, Responsibility and Action

    Science.gov (United States)

    Wilks, Leigh; Harris, Neil

    2016-01-01

    Objective: Young people's environmental views are typically conflicted, with little recognition of the links between environmental issues or between environmental responsibility and action. The purpose of this study was to clarify whether young people's understanding of the environment is in conflict or whether they are forming interconnections…

  8. Your own actions influence how you perceive other people: A misattribution of action appraisals

    Science.gov (United States)

    Tipper, Steven P.; Bach, Patric

    2008-01-01

    The attribution of personal traits to other persons depends on the actions the observer performs at the same time (Bach & Tipper, 2007). Here, we show that the effect reflects a misattribution of appraisals of the observers’ own actions to the actions of others. We exploited spatial compatibility effects to manipulate how fluently—how fast and how accurately—participants identified two individuals performing sporty or academic actions. The traits attributed to each person in a subsequent rating task depended on the fluency of participants’ responses in a specific manner. An individual more fluently identified while performing the academic action appeared more academic and less sporty. An individual more fluently identified while performing the sporty action appeared sportier. Thus, social perception is—at least partially—embodied. The ease of our own responses can be misattributed to the actions of others, affecting which personal traits are attributed to them. PMID:21633518

  9. Maria Sklodowska-Curie - scientist, friend, manager

    Science.gov (United States)

    Slavchev, A.

    2009-01-01

    Great names in science represent an inexhaustible source and richness of inspiration, satisfaction and consolation, a moving and victorious force. Throughout her exemplifying life, Maria Sklodowska remained modest but with a keen sense of humor, of an outstanding style, a mine of knowledge and experience, of innovative ideas and a rich inner life. Full of love, of passion to give and to share, of natural optimism, mixed with a light melancholy, so typical for sages. She vehemently defended the love of scientific research, of the spirit of adventure and entrepreneurship and fought for international culture, for the protection of personality and talent. Maria Sklodowska left her passion to science, her dedication to work including education and training of young people, her passionate adherence to her family, her belief in her friends, her pure and profound humanity and warmth! The paper should be a homage to her, an appreciation of her work over the years, but not less a correspondence, a conversation with her! On the other hand, the present solemn occasion resuscitates the personalities of Maria and Pierre Curie and their work, in particular of Maria Sklodowska in her own native land! In this manner, it truly contributes to her immortality!

  10. Action plan for healthy agriculture, healthy nutrition, healthy people

    Directory of Open Access Journals (Sweden)

    Artemis P. Simopoulos

    2013-04-01

    Full Text Available In October 2010, the World Council on Genetics, Nutrition and Fitness for Health promoted a scientific meeting in Ancient Olympia, Greece, on the theme Healthy Agriculture, Healthy Nutrition, Healthy People. The meeting focused on evolutionary aspects of human diet through the life cycle in terms of genetic predisposition, overall health, prevention of disease and of unhealthy behaviors, such as poor physical activity, and dietary changes caused by the introduction of modern agriculture, from the Agribusiness to systems of food production, from climate changes to the needs imposed by urban agriculture and architecture. Nutritional medical (mostly cardiological and political aspects of disease prevention through healthy dietary habits and physical activity have always been seen in isolation. The meeting, the first of its kind, treated such aspects together, recognizing the importance of integrating and initiating a dialogue between these disciplines. The meeting gathered together experts in cardiovascular prevention, nutrition, as well as politicians, for a global discussion of these themes. A summary statement was then compiled, focusing on the main themes on which a consensus had been reached. I strongly believe that such themes have great relevance for public health, raising the need for disseminating them as widely as possible. I am thankful to the Editor of the Italian Journal of Medicine for allowing this summary document to be made available for the first time in Italy.Raffaele De Caterina

  11. Pierre Curie: the anonymous neurosurgical contributor.

    Science.gov (United States)

    Man, Karen; Sabourin, Victor M; Gandhi, Chirag D; Carmel, Peter W; Prestigiacomo, Charles J

    2015-07-01

    Pierre Curie, best known as a Nobel Laureate in Physics for his co-contributions to the field of radioactivity alongside research partner and wife Marie Curie, died suddenly in 1906 from a street accident in Paris. Tragically, his skull was crushed under the wheel of a horse-drawn carriage. This article attempts to honor the life and achievements of Pierre Curie, whose trailblazing work in radioactivity and piezoelectricity set into motion a wide range of technological developments that have culminated in the advent of numerous techniques used in neurological surgery today. These innovations include brachytherapy, Gamma Knife radiosurgery, focused ultrasound, and haptic feedback in robotic surgery.

  12. Curie surface of Borborema Province, Brazil

    Science.gov (United States)

    Correa, Raphael T.; Vidotti, Roberta M.; Oksum, Erdinc

    2016-06-01

    The Curie surface interpreted from magnetic data through spatial frequency domain techniques is used to provide information on the thermal structure of Borborema Province. The Borborema Province is part of the neoproterozoic collision of an orogenic system situated between the São Francisco-Congo and São Luís-West Africa cratons, which formed the Gondwana Supercontinent. The Curie surface of Borborema Province varies from 18 to 59 km, which reveals the complexity in the crustal composition of the study area. The thermal structure shows different crustal blocks separated by the main shear zones, which corroborates the evolution model of allochthonous terranes. The Curie surface signature for the west portion of Pernambuco Shear Zone may indicate processes of mantle serpentinization, once the Curie isotherm is deeper than Mohorovic discontinuity. In this region, the amplitude of Bouguer anomaly decreases, which corroborates long wavelength anomaly observed in the magnetic anomaly. We interpreted this pattern as evidence of the Brasiliano-Pan-Africano's subduction/collision event. Earthquakes in the region are concentrated mainly in shallow Curie surface regions (less resistant crust) and in transition zones between warm and cold blocks. We calculated the horizontal gradient of the Curie depth to emphasize the signature of contact between the thermal blocks. These regions mark possible crustal discontinuities, and have high correlation with orogenic gold occurrence in the study area.

  13. Can We Find Solutions with People? Participatory Action Research with Small Organic Producers in Andalusia

    Science.gov (United States)

    Cuellar-Padilla, Mamen; Calle-Collado, Angel

    2011-01-01

    This paper reports on an experiment linking science with people. Taking as a paradigm the holistic scientific approach fostered by agroecology, we present a methodological proposal for the implementation of participatory action research in rural areas. Our aims were various: to solve a specific problem, i.e. the exclusion of small- and…

  14. Nationalism and Media Coverage of Indigenous People's Collective Action in Canada

    Science.gov (United States)

    Wilkes, Rima; Corrigall-Brown, Catherine; Ricard, Danielle

    2010-01-01

    Over the past several decades indigenous people in Canada have mounted hundreds of collective action events such as marches, demonstrations, road blockades, and land occupations. What the general public knows about these events and their causes overwhelmingly comes from the mainstream mass media. For this reason, media coverage of these events…

  15. Pioneers of nuclear medicine, Madame Curie.

    Science.gov (United States)

    Grammaticos, Philip C

    2004-01-01

    Among those who have made important discoveries in the field of radioactivity and thus helped in the development of nuclear medicine as an identical entity are: Heinrich Hertz who in 1886 demonstrated the existence of radiowaves. In 1895 Wilhelm Röntgen discovered the X-rays. In 1896 H. Becquerel described the phenomenon of radioactivity. He showed that a radioactive uranium salt was emitting radioactivity which passing through a metal foil darkened a photographic plate. An analogous experiment performed by S.Thomson in London was announced to the president of the Royal Society of London before the time H.Becquerel announced his discovery but Thomson never claimed priority for his discovery. Muarie Sklodowska Curie (1867-1934) was undoubtedly the most important person to attribute to the discovery of radioactivity. In 1898 she discovered radium as a natural radioactive element. This is how she describes the hard time she had, working with her husband Pierre Curie (1859-1906) for the discovery of radium and polonium: "During the first year we did not go to the theater or to a concert or visited friends. I miss my relatives, my father and my daughter that I see every morning and only for a little while. But I do not complain...". In presenting her discovery of radium, Madame Curie said: " ...in the hands of a criminal, radium is very dangerous. So we must often ask ourselves: will humanity earn or lose from this discovery? I, myself belong to those who believe the former...". The notebooks that Madame Curie had when she was working with radium and other radioactive elements like polonium, thorium and uranium are now kept in Paris. They are contaminated with radioactive materials having very long half-lives and for this reason anyone who wishes to have access to these notes should sign that he takes full responsibility. There are some more interesting points in Madame Curie's life which may not be widely known like: Although her full name is Maria Sklodowska-Curie

  16. [Guidelines for employment policies in Europe and national action plans: opportunities for people with disabilities].

    Science.gov (United States)

    Niehaus, M

    2000-06-01

    The scourge of unemployment has been roundly identified throughout Europe as the most pressing social and economic problem on the current political agenda. At Luxembourg in November 1997, the European Jobs Summit brought Europe's leaders together in an historic occasion that mapped out employment guidelines for Europe. The Luxembourg Jobs Summit agreed a set of guidelines for the Member States employment policy under four pillars, employability, entrepreneurship, adaptability, and equal opportunities. One guideline referred to promoting integration of people with disabilities into working life. The Member States subsequently agreed to incorporate the Guidelines into national employment action plans. The question of this paper is, to what extent do employment guidelines and National Action Plans improve the opportunities of disabled persons? This paper seeks to establish a set of fundamental issues concerning employment and disability. Included in this analysis are recommendations in order to achieve a better presence of disabled people in National Action Plans in future.

  17. Increasing Critical Health Literacy of Roma People trough Participatory Action Research

    DEFF Research Database (Denmark)

    Eklund Karlsson, Leena; Crondahl, Kristine

    Evidence shows that the Roma people engage less in democratic processes than the majority population. Rather than being involved in the planning of measurements and proposals, the Roma people have been treated as a helpless group in need of expert support from the authorities. To enable Roma people...... to take a leading role in their integration process a 2-year action research was implemented in 2010-2012. The idea was to strengthen the Roma Peoples’ critical health literacy which allows them to analyze and apply health information to oppose the forces that are holding them oppressed and to take better...... control over their life situation. The objective of this paper is to discuss methodological issues based on experiences of the use of participatory research approach in increasing health literacy. Methods: The core of the intervention was ‘training of trainers’ of a group of Roma people from western...

  18. Increasing Critical Health Literacy of Roma People trough Participatory Action Research

    DEFF Research Database (Denmark)

    Eklund Karlsson, Leena; Crondahl, Kristine

    Evidence shows that the Roma people engage less in democratic processes than the majority population. Rather than being involved in the planning of measurements and proposals, the Roma people have been treated as a helpless group in need of expert support from the authorities. To enable Roma people...... to take a leading role in their integration process a 2-year action research was implemented in 2010-2012. The idea was to strengthen the Roma Peoples’ critical health literacy which allows them to analyze and apply health information to oppose the forces that are holding them oppressed and to take better...... control over their life situation. The objective of this paper is to discuss methodological issues based on experiences of the use of participatory research approach in increasing health literacy. Methods: The core of the intervention was ‘training of trainers’ of a group of Roma people from western...

  19. Curie-point Depths Estimated from Fractal Magnetization Models in the Indian-Himalayan Region

    Science.gov (United States)

    Wang, J.; Li, C. F.; Lei, J., Sr.; Zhang, G.; Sun, C., Sr.

    2016-12-01

    The convergence between the Indian and Eurasian plates has developed the world's extreme topography and has also resulted in the occurrence of large earthquakes in the region. The April 25, 2015 (Mw 7.8) earthquake in central Nepal is the largest earthquake that has been recorded in the Nepal Himalaya since 1934. The earthquake caused thousands of people to die and massive destruction of famous heritage-structures in and around kathmandu and was attributed to the interations between the Indian and Eurasian plates. The crustal thermal structure which can be inferred from the Curie-point depths is critial to understand the seismotectonics and subduction in the Indian-Himalayan region. We present our inversion of Curie-point depths of the Indian-Himalayan region based on fractal spectral analyses both from aeromagnetic and satellite data. The first magnetic anomaly model used for estimatiion of Curie-point depths is the EMAG2 model, which has a resolution of 2-arc minute and an altitude of 4 km above the geoid. The second magnetic anomaly model is the CHAMP lithospheric model MF6. The third and the last magnetic anomaly model is the NGDC-720 lithospheric model, which is based on both the EMAG2 and MF6 models, has the smallest wavelength of 56 km. We first test variable windows sizes of 100.8×100.8 km2, 201.6×201.6 km2 and 302.4×302.4 km2 to estimate the Curie-point depths and then take the average of the results from these three different window sizes as the final Curie depths for the EMAG2 and MF6 models, respectively. The differences between the two Curie depths estimations from the EMAG2 and MF6 models mostly range within about ±4 km except for that in the Central Tibetan Plateau and Northeast India. This result shows that the NGDC-720 lithospheric model which contains both the EMAG2 and MF6 models is valid for the Curie-point estimation in the Indian-Himalayan region. The average Curie depths estimated from the NGDC-720 lithospheric model show small values in

  20. A Collaborative Action Research about Making Self-Advocacy Videos with People with Intellectual Disabilities

    Directory of Open Access Journals (Sweden)

    Ann-Louise Davidson

    2015-12-01

    Full Text Available This article presents the results of a collaborative action research conducted with people living with intellectual disabilities (ID who were going through a community integration process. To be successfully integrated into a community, they need to develop basic life skills as much as they need to learn to use mobile technologies for authentic interactions (Davidson, 2012 and to be self-advocates online (Davidson, 2009a. This study used the Capability Approach pioneered by Sen (1992 and Nussbaum (2000, which focusses on what people can do rather than on their deficiencies. I recruited a group of eight people with ID who wished to set goals, engage in developing new capabilities, share their goals and act as models for others with ID who want to learn to live on their own. In this article, I examine the process of developing self-advocacy videos with mobile technologies using the Capability Approach and I analyze the inventory of capabilities collected through this study. I provide recommendations for intervention through mobile technologies with the long term-goal of helping people with ID to become contributing citizens. I discuss the innovative action research methodology I used to help people with ID become self-advocates and take control of the messages they give through producing their own digital resources.

  1. Women who Worked with Marie Curie.

    Science.gov (United States)

    Pigeard-Micault, Natalie

    2015-06-01

    Marie Curie directed a research laboratory for 28 years. Between 1906 and 1934, forty five women worked under her guidance. Some were, and are, well-known in their own countries as their first woman full professor such as Ellen Gleditsch or Margaret von Wrangel, but for twenty eight of them, who were often French, nothing has ever been written. The strong presence of women in Marie Curie's laboratory has often been highlighted and has been considered as an exception, and the result of deliberate choice. Of course, these women did not choose this workplace by accident. They knew its director was a woman, a laureate of one, and after 1911, two Nobel Prizes, who was leading a well-equipped laboratory with an important radioactive source. But how did Marie Curie selected her collaborators among the many applications she received? Was her choice influenced by gender? A prosopographical research based on genealogical researches and new sources explains this presence contextually and sheds light on several questions : where did these women come from, what were their social and geographic origins, did they occupy any specific cultural or technical area inside Curie's lab, what future did they have after the laboratory? Through their lives, we can question the existence, or not, of a one profile of the female researcher in scientific areas in France.

  2. Research Ethics Committees and Participatory Action Research With Young People: The Politics of Voice.

    Science.gov (United States)

    Yanar, Zeynep M; Fazli, Mehria; Rahman, Jahanara; Farthing, Rys

    2016-04-01

    Participatory action research (PAR) is a methodological approach that seeks to maximize the participation of people whose lives it researches. It is underpinned by an ethical concern to research "with" people, rather than "on" people. However, this ethical approach to research is often, paradoxically, problematized by universities' research ethics committees (RECs). This article explores one site of tension between PAR and RECs-the requirement for anonymity for below 18-year-olds. It explores this tension by exploring a case study of a peer-to-peer research project undertaken by young women in East London, and using our own experiences and perspectives, it argues that anonymity can be unjust, disempowering, and unnecessary, and can reduce "pride." Without wanting to develop specific recommendations, given the limited scope of our case study, this article uses firsthand experiences to add weight to the broader discussions calling for a critical rethink of REC guidelines.

  3. How Verb Tense Affects the Construal of Action: The Simple Past Tense Leads People into an Abstract Mindset

    Science.gov (United States)

    Carrera, Pilar; Muñoz, Dolores; Caballero, Amparo; Fernández, Itziar; Aguilar, Pilar; Albarracín, Dolores

    2014-01-01

    Two experiments examined the influence of verb tense on how abstractly people construe action representations. Experiment 1 revealed that written descriptions of several daily events using the simple past tense (vs. simple present tense) resulted in actions and the action's target being seen as less likely and less familiar, respectively. In…

  4. Marie Curie: In the Laboratory and on the Battlefield

    Science.gov (United States)

    Badash, Lawrence

    2003-07-01

    This year is the centennial of the Nobel Prize in Physics shared by Henri Becquerel and the Curies for their pioneering work on radioactivity. But Marie Curie's contribution to the medical use of x rays is not widely known.

  5. Call to action: A new path for improving diabetes care for Indigenous peoples, a global review.

    Science.gov (United States)

    Harris, Stewart B; Tompkins, Jordan W; TeHiwi, Braden

    2017-01-01

    Diabetes has reached epidemic proportions in Indigenous populations around the globe, and there is an urgent need to improve the health and health equity of Indigenous peoples with diabetes through timely and appropriate diabetes prevention and management strategies. This review describes the evolution of the diabetes epidemic in Indigenous populations and associated risk factors, highlighting gestational diabetes and intergenerational risk, lifestyle risk factors and social determinants as having particular importance and impact on Indigenous peoples. This review further describes the impact of chronic disease and diabetes on Indigenous peoples and communities, specifically diabetes-related comorbidities and complications. This review provides continued evidence that dramatic changes are necessary to reduce diabetes-related inequities in Indigenous populations, with a call to action to support programmatic primary healthcare transformation capable of empowering Indigenous peoples and communities and improving chronic disease prevention and management. Promising strategies for transforming health services and care for Indigenous peoples include quality improvement initiatives, facilitating diabetes and chronic disease registry and surveillance systems to identify care gaps, and prioritizing evaluation to build the evidence-base necessary to guide future health policy and planning locally and on a global scale.

  6. Story telling and social action: engaging young people to act on climate change

    Science.gov (United States)

    Cordero, E.

    2014-12-01

    The realization that well designed graphs and clearly worded summaries were not enough to spur the public and policy makers towards an appropriate understanding of our planet encouraged me to search for other ways to share climate stories with the general public. After co-authoring a popular book on food and climate change and giving many talks to the general public, it struck me that young people were largely missing from the dialogue, and little meaningful progress was being made to design effective solutions. I then started working with faculty and students from the Film and Animation Departments at San Jose State University to develop stories about climate change that would be engaging to younger audiences. The result was the Green Ninja Project, based around the Green Ninja, a superhero who focuses on solutions to climate change using humor and silliness to soften what can be a somewhat challenging topic. The Project includes a) The Green Ninja Show - a series of YouTube videos (over 1,000,000 views) highlighting actions young people can take to reduce climate change, b) The Green Ninja Film Festival where students tell their own climate solutions stories, and c) a collection of educational resources that help teachers bring climate science topics into their classroom using hands-on activities. A key component to this work is promoting social action experiences, so that young people can understand how their actions can make a difference. Based on these experiences, I will provide my own reflections on the challenges and opportunities of communicating climate change with young people.

  7. [Marie Curie, née Maria Sklodowska (1867-1934)--contribution to the development of radiology].

    Science.gov (United States)

    Babić, Rade R; Babić, Gordana Stanković

    2011-01-01

    Marie Curie, née Maria Sklodowska, was born on November 7, 1867 in Warsaw (Poland). She suffered from leukaemia and died on June 4, 1934. She was buried with full honours at Pantheon. Marie Curie and her husband Pierre Curie discovered the radioactive elements Polonium (84Po210), Thorium (90Th232) and Radium (88Ra226). Marie Curie introduced the term radioactivity into science. She was the first woman who got Ph.D. in France, the first woman professor at Sorbonne, Paris and Medical Academy. Of all the women who have ever won the Nobel Prize, Marie Curie was the only who received it twice. During World War I Marie Curie designed a mobile x-ray room "radiologic car". Marie Curie had an x-ray machine installed into a car and demonstrated how to use its dynamo for electric power production necessary for the x-ray machine to work. She had 20 cars with moving radiological lab made and trained 150 people to work on them. She brought something radically new into military medicine--mobile x-ray diagnostics. With the discovery of radioactive elements a new medical branch, radiotherapy, was developed.

  8. Human‐Centered Design: Integrating Services & Systems Around People By Providing A Common Ground for Action

    DEFF Research Database (Denmark)

    Junginger, Sabine

    2014-01-01

    argue that human-centered design challenges the systems view of service engineers and service designers and requires them to reach out to each other. For this reason, I conclude that for these two disciplines, human-centered design provides a common ground for purposeful action: to arrive at the best......Service engineering and service design, though distinct in their origins, theories, concepts, methods and practices, share that they are both consequential productive arts for people who depend on their outcomes. The ideas, methods and practices of human‐centred design are therefore relevant...

  9. Marie and Pierre Curie. Life in extremes; Marie and Pierre Curie. Leben in Extremen

    Energy Technology Data Exchange (ETDEWEB)

    Roethlein, Brigitte

    2008-07-01

    In Paris in 1894, two young physicists fall in love: Marie Sklodowska and Pierre Curie. They get married and make great contributions to science, research radioactivity and discover new chemical elements. The marriage of Marie and Pierre Curie is quite modern: They work together as equals, share their thoughts and pursue their plans together as partners. They share an absolute interest in science, a love of nature, and a sceptic attitude towards the sophisticated society of the Belle Epoque. They are together 24 hours a day with hardly ever any disagreement. Whenever one of them is ill - which is quite often because of the high level of radioactivity in their laboratory -, the other will nurse him or her. After only twelve years of mutual love, Pierre Curie dies. Marie raises their two daughters on her own and continues her research. In 1911, she will be the first scientist that ever gets a second Nobel Prize. (orig.) [German] Im Paris des Jahres 1894 verlieben sich zwei junge Physiker: Marie Sklodowska und Pierre Curie. Sie heiraten und leisten gemeinsam Grosses fuer die Wissenschaft, erforschen die Radioaktivitaet und entdecken neue chemische Elemente. Zusammen erhalten sie den Nobelpreis. Marie und Pierre Curie fuehren eine Ehe, die ihrer Zeit weit voraus ist: Sie arbeiten gleichberechtigt miteinander, teilen ihre Gedanken und verfolgen ihre Plaene gemeinsam. Beiden eigen ist die absolute wissenschaftliche Neugier, die Liebe zur Natur und die Skepsis gegenueber der mondaenen Gesellschaft der Belle Epoque. Fast jeden Tag sind sie rund um die Uhr zusammen, dabei gibt es selten Spannungen. Wenn einer von beiden gesundheitliche Probleme hat - und das haben sie wegen der radioaktiven Belastung im Labor oft - ist der andere fuer ihn da und pflegt ihn. Nach nur zwoelf gemeinsamen Jahren der Liebe und Arbeit stirbt Pierre Curie. Marie zieht ihre beiden Toechter alleine gross und fuehrt die Forschungen weiter. 1911 erhaelt sie als erster Mensch zum zweiten Mal den

  10. Marie Curie's contribution to Medical Physics.

    Science.gov (United States)

    Jean-Claude, Rosenwald; Nüsslin, Fridtjof

    2013-09-01

    On occasion of its 50th anniversary, the International Organization for Medical Physics (IOMP) from now on is going to celebrate annually an International Day of Medical Physics for which the 7th November, the birthday of Marie Sklodowska Curie, a most exceptional character in science at all and a pioneer of medical physics, has been chosen. This article briefly outlines her outstanding personality, sketches her fundamental discovery of radioactivity and emphasizes the impact of her various achievements on the development of medical physics at large.

  11. SenseCam reminiscence and action recall in memory-unimpaired people.

    Science.gov (United States)

    Seamon, John G; Moskowitz, Tacie N; Swan, Ashley E; Zhong, Boyuan; Golembeski, Amy; Liong, Christopher; Narzikul, Alexa C; Sosan, Olumide A

    2014-01-01

    Case studies of memory-impaired individuals consistently show that reminiscing with SenseCam images enhances event recall. This exploratory study examined whether a similar benefit would occur for the consolidation of memories in memory-unimpaired people. We tested delayed recall for atypical actions observed on a lengthy walk. Participants used SenseCam, a diary, or no external memory aid while walking, followed by reminiscence with SenseCam images, diary entries, or no aid, either alone (self-reminiscence) or with the experimenter (social reminiscence). One week later, when tested without SenseCam images or diary entries, prior social reminiscence produced greater recall than self-reminiscence, but there were no differences between memory aid conditions for action free recall or action order recall. When methodological variables were controlled, there was no recall advantage for SenseCam reminiscence with memory-unimpaired participants. The case studies and present study differ in multiple ways, making direct comparisons problematic. SenseCam is a valuable aid to the memory impaired, but its mnemonic value for non-clinical populations remains to be determined.

  12. [Study of Appropriate Risk Management for People Receiving Care at Home - Actions of the High-Risk People Receiving Care at Home in Times of Disasters].

    Science.gov (United States)

    Hata, Kiyomi; Hata, Masao

    2016-12-01

    Although preparation for frequently occurring disasters is required in the context of preparing a home care environment wherein people reside and receive care, existing preparations cannot be described as sufficient. Therefore, effective preparation has become a research focus. This study aimed to identify the risks faced by people receiving home care in disaster situations and to clarify the risk-related actions taken by various stakeholders in order to study appropriate risk management for people receiving care. We interviewed 8 individuals, including people receiving care and their family members, who were victims in the large-scale disasters associated with the Great Hanshin-Awaji Earthquake(1995)or later, conducted the factorsearch qualitative analysis, and mapped the actions taken by stakeholders. As a result, identified risks were classified into 5 categories and 13 subcategories. Risk actions taken by professionals and others could be elucidated from the stakeholder map. Our findings indicate the necessity of establishing risk management protocols for people receiving home care and preparing in ordinary times.

  13. Nurse training in primary care: educational actions with people living with Diabetes mellitus

    Directory of Open Access Journals (Sweden)

    Camila Aparecida Pinheiro Landim Almeida

    2017-08-01

    Full Text Available Educational actionswith people living with chronic conditions, especially Diabetes mellitus, are a challenge and a necessary strategy in Primary Care, in view of the glycemic balance, the prevention of complications and the improvement of the quality of life. This study aimed to analyze nurse training in educational actions developed in Primary Care with people living with Diabetes mellitus. A qualitative research was conducted with 28 nurses of Primary Care, in Teresina, state of Piauí, Brazil. Data were collected from April to June 2015 through interviews and analyzed by the collective subject discourse technique. The construction of the results was based on four sequential questions made in the interviews, from which emerged 15 central ideas: lectures, group orientation, nursing consultation and home care; theoretical knowledge, practical knowledge, technical knowledge and expertise knowledge; few materials and infrastructure in the basic unit, lack of professional teamwork, reduced workload and little awareness of teachers; and promotion of care and and self-care, family support and prevention of complications. In the analysis of the discourses, it was possible to conclude about the need for Permanent Health Education in Primary Care.

  14. Meeting the commitments of the ICPD Programme of Action to young people.

    Science.gov (United States)

    Jejeebhoy, Shireen J; Zavier, A J Francis; Santhya, K G

    2013-05-01

    Some of the commitments nations have made in international agreements, notably in the ICPD Programme of Action (1994) and the resolution of the UN Committee on Population & Development (2012), to young people include: realisation of the right to education and attainment of a secondary school education; delaying marriage beyond childhood and ensuring free and full choice in marriage-related decisions; exercise of the right to health, including access to friendly health services and counselling; access to health-promoting information, including on sexual and reproductive matters; acquisition of protective assets and agency, particularly among girls and young women, and promotion of gender equitable roles and attitudes; protection from gender-based violence; and socialisation in a supportive environment. These are crucial for a successful transition to adulthood with reference to sexual and reproductive health outcomes. This paper assesses the extent to which these commitments have been realised, drawing from available studies conducted in the 2000s in developing countries. It concludes that while some progress has been made in most of these aspects, developing countries have a long way to go before they can be said to be helping their young people achieve a successful sexual and reproductive health-related transition to adulthood.

  15. Selective attention and control of action: comparative psychology of an artificial, evolved agent and people.

    Science.gov (United States)

    Ward, Robert; Ward, Ronnie

    2008-10-01

    This study examined the selective attention abilities of a simple, artificial, evolved agent and considered implications of the agent's performance for theories of selective attention and action. The agent processed two targets in continuous time, catching one and then the other. This task required many cognitive operations, including prioritizing the first target (T1) over the second (T2); selectively focusing responses on T1, while preventing T2 from interfering with responses; creating a memory for the unselected T2 item, so that it could be efficiently processed later; and reallocating processing towards T2 after catching T1. The evolved agent demonstrated all these abilities. Analysis shows that the agent used reactive inhibition to selectively focus behavior. That is, the more salient T2, the more strongly responses towards T2 were inhibited and the slower the agent was to subsequently reallocate processing towards T2. Reactive inhibition was also suggested in two experiments with people, performing a virtually identical catch task. The presence of reactive inhibition in the simple agent and in people suggests that it is an important mechanism for selective processing.

  16. The life and legacy of Marie Curie.

    Science.gov (United States)

    Rockwell, Sara

    2003-01-01

    Marie Curie was a remarkable woman whose discoveries broke new ground in physics and chemistry and also opened the door for advances in engineering, biology, and medicine. She broke new ground for women in science: she was, for example, the first woman to receive a doctor of science degree in France, the first woman to win Nobel Prize, the first woman to lecture at the Sorbonne, the first person to win two Nobel Prizes, and the first Nobel Laureate whose child also won a Nobel Prize. Her life offers insights into the changing role of women in science and academia over the past century. It also offers examples of many ways in which scientists can, and should, work to improve the educational programs and career opportunities available to those who follow in their footsteps.

  17. [Maria Skłodowska-Curie and Piotr Curie an epoch-makingin year 1898].

    Science.gov (United States)

    Wielogórski, Zbigniew

    2012-01-01

    For many reasons the year 1898 was unusual for Maria Skłodowska-Curie and her husband. After defining the subject of the doctoral thesis and choosing Henri Becqerel as thesis supervisor, Maria started intensive experimental work. In the allotted room called storeroom, in conditions that were far too inadequate, they managed to put up a unique measuring equipment composed of instruments whose originator was Pierre Curie. In the ionization chamber and in the piezoelectric quartz charges formed, whose mutual neutralization was shown by the quadrant electrometer. Ionization current, which was measured quantitatively, was proportional to the radiation of the sample. Studying many elements, their compounds and minerals enabled Maria to state that uranium is not the only element endowed with the power of radiation; the second one turned out to be thorium. Anomaly detected in the radiation of uranium minerals made it possible for Maria to draw an extremely important conclusion: radioactive uranium and thorium are not the only elements endowed with such an attribute. Pitchblende, which was studied by the Curie couple, had to contain also other radioactive substances. Gustave Bémont also participated in the chemical analysis of the uranium ore and it is worth reminding that he was involved in the discovery of polonium and uranium. The phenomenon of radioactivity couldn't have been explained if it was not for the sources of strong radioactivity. Those sources undoubtedly could have been the discovered elements but their scanty content in the uranium ore made their isolation very difficult and laborious. Access to industrial remains after procession of pitchblende from Jachymov (Sankt Joachimstahl), obtained owing to the mediation of Eduard Suess, provided the source of this raw material. From it, in a shack also called le hangar, the Curie couple isolated the first samples of the radium salt. This element, later extracted by discoverers on a grand scale and handed over in a

  18. Marie and Pierre Curie and radium: history, mystery, and discovery.

    Science.gov (United States)

    Mould, R F

    1999-09-01

    Commencing with Marie Curie's early life in Poland and the discovery of radium in the rue l'Homond "shed" in Paris in 1898, this paper includes some little known facts. It ends with some unusual uses of and claims for radium, and finally, because Medical Physics is an American journal, details are included of Marie Curie's two visits to the USA.

  19. Spin dynamics in a Curie-switch.

    Science.gov (United States)

    Kravets, A F; Tovstolytkin, A I; Dzhezherya, Yu I; Polishchuk, D M; Kozak, I M; Korenivski, V

    2015-11-11

    Ferromagnetic resonance properties of F1/f/F2/AF multilayers, where weakly ferromagnetic spacer f is sandwiched between strongly ferromagnetic layers F1 and F2, with F1 being magnetically soft and F2-magnetically hard due to exchange pinning to antiferromagnetic layer AF, are investigated. Spacer-mediated exchange coupling is shown to strongly affect the resonance fields of both F1 and F2 layers. Our theoretical calculations as well as measurements show that the key magnetic parameters of the spacer, which govern the ferromagnetic resonance in F1/f/F2/AF, are the magnetic exchange length (Λ), effective saturation magnetization at T  =  0 (m0) and effective Curie temperature (T(C)(eff)). The values of these key parameters are deduced from the experimental data for multilayers with f  =  Ni(x)Cu(100-x), for the key ranges in the Ni-concentration (x = 54 ÷ 70 at. %) and spacer thickness (d = 3 ÷ 6 nm). The results obtained provide a deeper insight into thermally-controlled spin precession and switching in magnetic nanostructures, with potential applications in spin-based oscillators and memory devices.

  20. A bust of Marie Sklodowska Curie at CERN

    CERN Multimedia

    CERN PhotoLab

    1979-01-01

    The Polish Deputy Minister of Energy and Nuclear Power, J. Felicki, presented the Directors General with a bust of Mme Marie Sklodowska Curie on behalf of physicists of Poland (CERN Courier 19 (1979) 164).

  1. Marie Curie's Doctoral Thesis: Prelude to a Nobel Prize.

    Science.gov (United States)

    Wolke, Robert L.

    1988-01-01

    Traces the life and research techniques of Marie Curie's doctoral dissertation leading to the discovery and purification of radium from ore. Reexamines the discoveries of other scientists that helped lead to this separation. (ML)

  2. The Pasteurization of Marie Curie: A (meta)biographical experiment.

    Science.gov (United States)

    Wirtén, Eva Hemmungs

    2015-08-01

    Biographies of scientists occupy a liminal space, highly popular with general readers but questioned in academia. Nonetheless, in recent years, historians of science have not only embraced the genre with more enthusiasm and less guilt, they have also turned to the metabiography in order to renew the study and story of scientists' roles. This essay focuses on Marie Curie, the world's most famous female scientist, in order to unpack some of the theoretical and methodological claims of the science biography, and especially to address the sexing mechanisms at play in the construction of the biographical subject. Pierre Curie (1923), Marie's biography of her husband Pierre, paid tribute to her dead husband and collaborator, but also allowed Curie a legitimate outlet to construct her own persona and legacy. Categories such as personhood, person, and persona are not only central to the biography genre but also are essential to the sense of self and self-fashioning of scientists. Looking at how Marie Curie negotiated these categories in Pierre Curie not only gives new insight into Curie's self-fashioning strategies but may also shed some light on the more general analytical lacunae of the science biography.

  3. Referrals to the Marie Curie nursing service in North Yorkshire.

    Science.gov (United States)

    Hanratty, B; Feather, J; Ward, C

    2000-01-01

    District and Marie Curie nurses participated in a small-scale study to describe referrals to a Marie Curie service in one English health district over a 3-month period. The number of new patients referred was small; they were geographically clustered and had widely differing life expectancies. Anecdotal reports of difficulties with the 'Nurselink' referral system were not confirmed, and in situations where the system was in operation, Marie Curie nurses were more likely to speak directly to the referring nurse. The most frequently cited reason for referral was general nursing needs; however, Marie Curie nurses felt that they were most often involved to provide family support. These findings suggest that there may not be a shared understanding of the Marie Curie nurse's role, and that equity in community palliative nursing care merits examination. Defining and publicizing the role of the Marie Curie nurse, providing guidance for referrals and prioritizing communication between professionals are proposed not only to enhance the service locally but to ensure that the service is available to all. This article illustrates the value of research to identify ways to improve service delivery.

  4. [Evaluation of the action plan for Roma people in health area].

    Science.gov (United States)

    Rodin, Urelija

    2010-12-01

    By virtue of the national program for Romanies and participation in the Decade of Roma Inclusion 2005-2015, Croatia has chosen its strategic standpoint toward programs of social inclusion of Romanies in four priority areas: housing, education, employment and health. The objectives of the Roma Action Plan (AP) for 2005-2015 in the health area focus on: * ensuring equal availability of health services through information about personal rights and health insurance options; * child health improvement and care, as well as mortality reduction; * raising health awareness and care in terms of safe motherhood, family planning and reproductive health; * financial support to schooling of Roma people in health professions In order to monitor the implementation of AP and measure the availability of health care and condition, certain indicators of the number and coverage of Romanies are crucial for each of the above objectives: indicators for the Roma informed about personal rights resulting from the mandatory health insurance; for Romanies who have health insurance; for vaccinated Romani children, for Romani newborns born in maternity hospitals, for prenatal and pregnancy health care in Romani women, for Romanies included in family planning, for the mortality rate and causes of death in Romanies, and for the Roma receiving scholarships for education in health professions. Most of these indicators are only obtainable through special studies, while routinely monitored indicators simply do not satisfy quantitative needs. Another problem is Romanies not stating their ethnic denomination. Consequently, routine Roma mortality and cause of death statistics are unreliable. At the state level, no specific indicators of implementation could be obtained for any of the above health objectives, while some were obtainable for specific units of local and self-government (Baranja, Medimurje and Primorje-Goranska County). According to the research, more than 50% of Romanies in Croatia are

  5. Marie and Irene Curie. The first female Nobel Prize winners; Marie en IreneCurie. De eerste vrouwelijke Nobelprijswinnaars

    Energy Technology Data Exchange (ETDEWEB)

    Noordenbos, G. [Joke Smit Instituut voor Vrouwenstudies, Universiteit Leiden, Leiden (Netherlands)

    2003-07-01

    Marie Curie was awarded the Nobel Prize in 1903 and in 1911. Also her daughter, Irene Joliot-Curie, received a Nobel Prize for science in 1935. In this book an overview is given of the academic world at that time: limited access to universities for women, the carriers of both women in physics and their pioneering research and discoveries, the refusal of Marie Curie by the French Academy of Sciences, the awarding of the Nobel Prize and the assignment of Irene Joliot-Curie as the first female minister in France, the impact of the two World Wars, their married and private lives and the constant smear campaign of the press against both women. The lives and works of both women are hold against the light of the present position of women in physical sciences. [Dutch] In 1903, precies honderd jaar geleden, ontving Marie Curie als eerste vrouw de Nobelprijs voor de Wetenschap, gevolgd door een tweede Nobelprijs in 1911. Ook haar dochter Irene Joliot-Curie kreeg de Nobelprijs voor de wetenschap in 1935. Marie and Irene Curie schetst een breed beeld van de academische wereld waarin beide vrouwen zich bewogen: de beperkte toegang van vrouwen tot de universiteit, hun carrisres in de natuurkunde en baanbrekende ontdekkingen, de afwijzing van Marie door de Franse Academie des Sciences, de toekenning van de Nobelprijs en de benoeming van Irene als eerste vrouwelijke minister in Frankrijk, de invloed van de twee Wereldoorlogen, hun huwelijks- en priveleven en de niet aflatende hetze van de pers tegen beiden. In de door mannen gedomineerde wereld van de natuurwetenschappen liep de uitzonderingspositie van beide vrouwen als rode draad door hun curieuze levens. Het leven en werk van de Curies wordt geactualiseerd door deze tegen het licht te houden van de huidige positie van vrouwen in de natuurwetenschappen. Het bereiken van de top van de wetenschap door vrouwen blijkt nog steeds uitzonderlijk.

  6. Global oral health of older people--call for public health action

    DEFF Research Database (Denmark)

    Petersen, P E; Kandelman, D; Arpin, S

    2010-01-01

    The aim of this report is (1) to provide a global overview of oral health conditions in older people, use of oral health services, and self care practices; (2) to explore what types of oral health services are available to older people, and (3) to identify some major barriers to and opportunities...... for the establishment of oral health services and health promotion programmes....

  7. Joliot-Curie School of Nuclear Physics, 1997; Ecole Joliot-Curie de Physique Nucleaire, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Abgrall, Y. [L`Institut National de Physique Nucleaire et de Physique des Particules du CNRS (India2P3), 75 - Paris (France); Collaboration: La Direction des Sciences de la Matiere du CEA (FR); Le Fonds National de la Recherche Scientifique de Belgique (BE)

    1998-12-31

    This document contains the lectures of the Joliot-Curie International School of Nuclear Physics held at Maubuisson, France on 8-13 September 1997. The following lectures of nuclear interest were given: The N-body problem (relativistic and non-relativistic approaches); The shell model (towards a unified of the nuclear structure); Pairing correlations in extreme conditions; Collective excitations in nuclei; Exotic nuclei (production, properties and specificities); Exotic nuclei (halos); Super and hyper deformation (from discrete to continuum, from EUROGAM to EUROBALL); and The spectroscopy of fission fragments. Important new facts are reported and discussed theoretically, concerning the nuclei in high excitation and high states and of the nuclei far off stability. Important technical achievements are reported among which the production of radioactive beams, sophisticated multi-detectors as well as significant advances in the nuclear theoretical methods. The double goal of training of young researchers and of permanent formation and information of the older ones seems to have been reached

  8. The People vs. Pollution: understanding citizen action against pollution in China

    NARCIS (Netherlands)

    van Rooij, B.

    2010-01-01

    Chinese pollution victims have increasingly started to resort to political and legal action to protect their interests. This paper analyzes such activism by studying how citizens identify the necessity to initiate action against pollution and by investigating the obstacles they meet when attempting

  9. Human‐Centered Design: Integrating Services & Systems Around People By Providing A Common Ground for Action

    DEFF Research Database (Denmark)

    Junginger, Sabine

    2014-01-01

    Service engineering and service design, though distinct in their origins, theories, concepts, methods and practices, share that they are both consequential productive arts for people who depend on their outcomes. The ideas, methods and practices of human‐centred design are therefore relevant to b...... solutions that work for people inside and outside of organizations and to conceive of, plan and deliver services that embrace the full human being, not merely a person’s purchasing power or cognitive abilities....

  10. Music therapy and cognitive capacity in people with Alzheimer’s disease: A call for action

    OpenAIRE

    Cabedo Mas, Alberto; Moliner Urdiales, Diego

    2014-01-01

    The aim of this essay is to encourage researchers to investigate the impact of music therapy on cognitive function in people with Alzheimer’s disease (AD). Despite the use of music as non-pharmacological treatment in people with dementia is well established, we identified a lack of research about the cognitive effects of music therapy in AD patients. Due to the actual high prevalence of AD, cognitive intervention programmes based on music therapy could constitute a fascinating line of researc...

  11. Music therapy and cognitive capacity in people with Alzheimer’s disease: A call for action

    OpenAIRE

    Cabedo Mas, Alberto; Moliner Urdiales, Diego

    2014-01-01

    The aim of this essay is to encourage researchers to investigate the impact of music therapy on cognitive function in people with Alzheimer’s disease (AD). Despite the use of music as non-pharmacological treatment in people with dementia is well established, we identified a lack of research about the cognitive effects of music therapy in AD patients. Due to the actual high prevalence of AD, cognitive intervention programmes based on music therapy could constitute a fascinating line of researc...

  12. On the Fulfillment of Curie's Law in Magnetic Fluids

    Science.gov (United States)

    Zhernovoi, A. I.; Dyachenko, S. V.

    2015-05-01

    A fulfillment of Curie's law in magnetic fluids provides an option of their thermometric applications to measure thermodynamic temperature. On the other hand, it was shown elsewhere that the initial magnetic susceptibility χ of magnetic fluids follows Curie-Weiss's law rather than Curie's law. To obtain its values, use was made of the formula χ = M/N0, where M is magnetization, and N0 is the external magnetic field strength without any specimen. This work deals with investigations of the dependence of magnetic susceptibility of magnetic fluid on temperature for the cases where its values are found via the following formulas: 1) χ = M/N0, and 2) χ = Mμ0/M, where M is the magnetic field induction inside the specimen. It is found that in the first case the temperature dependence of χ obeys Curie-Weiss's law while in the second case - Curie's law. The reason for this results from the fact that induction M acting on the particles of magnetic fluid is noticeably higher than that of the external field, M0.

  13. People

    Science.gov (United States)

    2001-01-01

    Thrilled at @Bristol Kathy Sykes in conversation with Liz Whitelegg. Kathy Sykes is Senior Science Consultant at @Bristol - a new area on Bristol's Harbourside with a Science Centre Explore, a Wildlife Centre Wildscreen, with sculptures and fountains. Kathy was one of five people in 1999 to be awarded an IOP Public Awareness of Physics award. Dr Kathy Sykes What attracted you to Physics in the first place? It was really when I discovered that Physics was all about making models of the world, because then suddenly the ability to be creative became important. I liked the idea that you could have a picture of the world that might work quite well but you could always replace that with a better one. That was what made science come alive and make it seem like something that I'd really love to be involved in, rather than science as a stale body of facts that I needed to learn. I was much more interested in ideas than in facts. I think that finding out about 'models' happened around the time I was discovering quantum mechanics and how the act of observing something can actually affect the outcome. I found it incredibly exciting - especially how that changed the whole philosophy of science. I also had a fantastic teacher in physics and I owe an awful lot to him. He just swooped in at the last moment when I was considering giving it up so that made an enormous difference. After my degree I went to teach maths and physics A-level in Zimbabwe with the VSO, and it was partly wanting to share my excitement with other people about physics that made me want to go and teach abroad. When I came back and began my PhD in Physics at Bristol University, I missed teaching and thought it was important to get the public more involved in science and debates about science. My supervisor, Pete Barham, was doing lots of this himself, and he helped and encouraged me enormously. I can't thank him enough. Did you consider teaching as a career? Well I like having the carpet whipped away from

  14. Global activism: new paths for Black people movement collective action in Colombia

    Directory of Open Access Journals (Sweden)

    Adriana Espinosa Bonilla

    2011-07-01

    Full Text Available This paper examines the transformations in actor-network collective action in the Process of Black Communities —pcn—, which were developed as a consequence of the armed conflict worsening in the Pacific region —specifically on the collective lands in the municipalities of Buenaventura and Suárez (Southwestern Colombia— in the last ten years. Information was gathered through semi-structured interviews, observation records, analysis of audio/text documents on the organizations’ claims and communiqués, and the drafting of aggregated data on displacement and conflictual facts in the region. Findings show a significant up surging of conflict within the period, in the face of which PCN’s coalitions with local and global actors have come both to neutralize and make visible armed actors’ actions against populations, and to reorient collective action, introducing innovations in the repertoires of action and setting new goals for this actor-network in the region.

  15. [How deaf people cope in routine and emergency situations - suggested paths for thought and action].

    Science.gov (United States)

    Tannenbaum-Baruchi, Carolina; Feder-Bubis, Paula; Adini-Weisel, Bruria; Aharonson-Daniel, Limor

    2014-09-01

    Deaf people have unique characteristics and needs. There is a limited amount of research regarding the needs of deaf people, and no studies were found concerning deaf people in emergency situations. The absence of the sense of hearing in deaf people is only one component of the complexity of their world. Many factors contribute to this complexity, but the most striking is the means of communication between the deaf and the hearing person and vice versa. Changes during emergency situations present a challenge for hearing individuals, and even more so, for deaf people. Deaf individuals experience difficulty in obtaining and transmitting information, accessing care and more. These difficulties often result in the dependency of the deaf person on others. The State of Israel enacted laws targeted to facilitate the access of individuals with disabilities in general, and deaf people in particular, to public services. In emergencies, the Home Front Command and the Ministry of Social Welfare distribute pagers to the deaf population, as a device to communicate warning alerts. However, these devices do not fulfil the need for accessible care, bi-directional flow of information, and additional needs that arise during times of emergency. The deaf population is a cultural minority, whose needs in emergency situations are unknown. Familiarity with the deaf population is the first step towards improving treatment and communication that are apt for this population. This paper reviews what is known in the literature about this topic and presents an attempt to bridge the gap of knowledge and barriers to communication between the deaf population and

  16. Maria Sklodowska Curie - the precursor of radiation sterilization methods

    Energy Technology Data Exchange (ETDEWEB)

    Gluszewski, Wojciech; Zagorski, Zbigniew P. [Institute of Nuclear Chemistry and Technology, Warsaw (Poland); Tran, Quoc Khoi; Cortella, Laurent [CEA Grenoble, ARC-Nucleart, Atelier Regional de Conservation, Grenoble (France)

    2011-06-15

    A resolution of the 63rd Assembly of the United Nations proclaimed the year 2011 as the International Year of Chemistry. The coordinators of the event are UNESCO and the International Union of Pure and Applied Chemistry (IUPAC). The patroness of this event is Marie Curie, nee Sklodowska. Among women scientists, she was the first recipient of the Novel Prize, and among all scientists, she is the only one who has received this award in different scientific fields (in 1903 in the field of physics with Pierre Curie and Henri Becquerel, in 1911 in the field of chemistry). Considering the former Polish nationality of Marie Curie, the year 2011 has been proposed by the Polish Parliament as her year, using the name Maria Sklodowska Curie, under which she is known in Poland. Celebrating the International Year of Chemistry is a good opportunity to remember the importance of the work of Maria Sklodowska Curie for the emergence and development of many fields of science. This article is an attempt to present a view of science, as taught through modern applications of the radiation chemistry of polymetric materials and radiation sterilization. Although the real development of both ''cold'' sterilization and polymer technology occurred in the 1950's long after the death of Marie Curie Sklodowska, the original ideas go back to ther work performed in the 1920s. Sometimes, and that is the present case, a single scientist creates a new field, in spite of the fact that at the time of discovery there are no applications. The parallel development of other branches of science and technology helps the application of the original idea. (orig.)

  17. Taking Action toward Inclusion: Organizational Change and the Inclusion of People with Disabilities in Museum Learning

    Science.gov (United States)

    Reich, Christine A.

    2014-01-01

    This study examined organizational change in science museums toward practices that are inclusive of people with disabilities. Guided by two overarching frameworks, organizational learning and the social model of disability, this study sought to answer the following: What are the contexts and processes that facilitate, sustain, or impede a science…

  18. Taking Action toward Inclusion: Organizational Change and the Inclusion of People with Disabilities in Museum Learning

    Science.gov (United States)

    Reich, Christine A.

    2014-01-01

    This study examined organizational change in science museums toward practices that are inclusive of people with disabilities. Guided by two overarching frameworks, organizational learning and the social model of disability, this study sought to answer the following: What are the contexts and processes that facilitate, sustain, or impede a science…

  19. Size and shape effects on Curie temperature of ferromagnetic nanoparticles

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A simplified model was developed to describe the Curie temperature suppression of ferromagnetic nanoparticles. Based on a size and shape dependent model of cohesive energy, the critical temperature variations of ferromagnetic nanoparticles were deduced. It is predicted that the Curie temperature of nanoparticles depends on both size and shape conditions, among which the temperature suppression is strongly influenced by the particle size and the shape effect is comparably minor. The calculation values for freestanding nanoparticles are in good agreement with other theoretical model and the experimental results. The model is also potential for predictions for the nanoparticles embedded in different substrates.

  20. Selective Attention and Control of Action: Comparative Psychology of an Artificial, Evolved Agent and People

    Science.gov (United States)

    Ward, Robert; Ward, Ronnie

    2008-01-01

    This study examined the selective attention abilities of a simple, artificial, evolved agent and considered implications of the agent's performance for theories of selective attention and action. The agent processed two targets in continuous time, catching one and then the other. This task required many cognitive operations, including prioritizing…

  1. Meeting the Information Needs of the American People: Past Actions and Future Initiatives

    Science.gov (United States)

    Davenport, Nancy; Russell, Judith

    2008-01-01

    In the FY2007 and FY2008 Budgets, the President recommended that the National Commission on Libraries and Information Sciences (NCLIS) be consolidated with the Institute of Museum and Library Services (IMLS). In FY2007, while waiting for Congressional action on the proposal in the President's FY2008 Budget, the Commission recognized the need to…

  2. People

    Science.gov (United States)

    2001-05-01

    microscopes, chemical analyses etc. The NHM has big labs—like a university—in the basement. I write papers, give talks... For the public galleries of the NHM my group provides expert input to exhibitions-when the meteorite pavilion was recently refurbished we suggested a layout, wrote text and selected samples, but this was then 'edited' by the exhibition designers. I'm also working on a new website with virtual meteorite specimens. As an expert on Martian meteorites I often get interviewed by the media: for example, I am on a new Channel 4 programme called Destination Mars. I have also just finished a general interest book—it's called Search for Life; the NHM have just published it (in March). And do you get to go to exciting places? As a researcher I go to conferences I am just off to the States this week. I went to Antarctica ten years ago meteorite collecting and I am hoping to go to Australia this year. It is good fun but they really do need an expert who can recognise a meteorite. I'll be going to the Nullarbor region of Australia for 2 3 weeks depending on the weather if it's too green there is too much grass, so you can't see the meteorites. How do you find people respond to meteorites? People love touching rocks from outer space, especially primary school children. You can see how they are burnt on the outside. When you feel the weight of them it really brings it home: iron meteorites are heavy! They'll often say 'Wow, it fell from the sky' as they glance upwards, half expecting another one to come crashing through the ceiling. Everyone finds it amazing that a solid object has come as if from nowhere. And they are so old. They can't believe how old they are. We want to know where we come from. There is always lots of media coverage about what is happening in the sky (eclipses and the like). It's there and it's a bit of a mystery. If we can get to grips with how our planets and how our own Sun formed it can put us in the picture as to where we have come from and

  3. The use of photography as emancipatory action: an experience report with people in street situation

    Directory of Open Access Journals (Sweden)

    Juliana de Oliveira Perez

    2014-08-01

    Full Text Available This study aims to present a reflection on the experience of the use of photography by the occupational therapist with the people living in the streets of a Specialized Reference Center for Social Assistance to People in Street Situation - CREAS-POP of a municipality in Sao Paulo state, Brazil. The Photography Workshop aimed to provide an insertion and a different relationship with the urban space and population to the person living in the streets. Participants were asked to photograph something that arouses their interest in urban spaces. The photograph gave them a different view of themselves, allowing them to perceive themselves as subjects with rights and social actors, and not as an object of societal observation. Perceiving themselves as citizens, they came out of invisibility, and an improvement in self-esteem and greater engagement in the activities proposed was observed. The workshop also resulted in a photo exhibit open to the public that aimed to interfere with pre-conceptions and prejudices that society has built about people in street situation and give visibility to the creative potential of this population.

  4. Priming status-legitimizing beliefs: Examining the impact on perceived anti-White bias, zero-sum beliefs, and support for Affirmative Action among White people.

    Science.gov (United States)

    Wellman, Joseph D; Liu, Xi; Wilkins, Clara L

    2016-09-01

    The current research examines how status-legitimizing beliefs (SLBs) influence White people's perceptions of anti-White bias, endorsement of zero-sum beliefs, and support for Affirmative Action. We suggest that SLBs perpetuate inequality by increasing White people's perceptions of zero-sum beliefs and anti-White bias, which in turn lead to decreased support for Affirmative Action. White individuals primed with SLBs perceived greater anti-White bias, endorsed greater zero-sum beliefs, and indicated less support for Affirmative Action than individuals primed with neutral content. Mediation analysis revealed that the SLB prime decreased support for Affirmative Action by increasing perceptions of anti-White bias. This research offers experimental evidence that SLBs contribute to White people's perceptions of anti-White bias and to decreased support for Affirmative Action.

  5. IsoNose - Isotopic Tools as Novel Sensors of Earth Surfaces Resources - A new Marie Curie Initial Training Network

    Science.gov (United States)

    von Blanckenburg, Friedhelm; Bouchez, Julien; Bouman, Caludia; Kamber, Balz; Gaillardet, Jérôme; Gorbushina, Anna; James, Rachael; Oelkers, Eric; Tesmer, Maja; Ashton, John

    2015-04-01

    . Making soil from rock 2. Dissolved metals in the global water cycle 3. Human influence on metal cycling 4. Innovations in metal ore exploration 5. New analytical tools Acknowledgement: The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/2007-2013/ under REA grant agreement n° [608069].

  6. PARTNER: A Marie Curie Initial Training Network for hadron therapy

    CERN Document Server

    CERN BULLETIN; Nathalie Hospital; Manuela Cirilli

    2011-01-01

    PARTNER is a 4-year Marie Curie Training project funded by the European Commission with 5.6 million Euros aimed at the creation of the next generation of experts. Ten academic institutes and research centres and two leading companies are participating in PARTNER, that is coordinated by CERN, forming a unique multidisciplinary and multinational European network.

  7. People

    Science.gov (United States)

    2001-11-01

    the war Hoyle returned to Cambridge, but kept in close contact with his collaborators. Fred Hoyle was a canny and media-savvy scientist, 40 years before such things were recognized. Martin Rees said after his death '[He] also had other dimensions to his career, his inventiveness and skill as a communicator'. It is hard to realize now the impact that Hoyle's broadcasts had in post-war Britain. His programmes for the BBC on The Nature of the Universe won greater audiences than such unlikely rivals as Bertrand Russell and Tommy Handley. Even today many people recall how they were affected by listening to these broadcasts. Hoyle used one of his broadcasts to ridicule the hot explosion theory. He referred to the idea of a 'big bang as fanciful'. Unfortunately the name stuck, much to Hoyle's chagrin. In the 1950s Hoyle began a fruitful collaboration with Willy Fowler of the California Institute of Technology in Pasadena. Hoyle was interested in the origin of the chemical elements. Hans Bethe, Charles Critchfield and Karl-Frederich von Weizsäcker had calculated in 1939 how stars could turn protons into helium nuclei by nuclear fusion. Part of the Vela supernova remmant, the debris left after the type of massive explosion in which Hoyle predicted that heavy nuclei were formed. (© Royal Observatory, Edinburgh, Anglo-Australian Observatory.) Building on earlier collaboration with Ed Saltpeter, Hoyle used data supplied by Geoffrey and Margaret Burbidge and, working with Fowler, began to piece together how the elements were formed. By looking at very large stars near the end of their lives and examining their chemical composition, they noticed that the abundances of elements almost exactly corresponded to those with a low nuclear capture cross section. Hoyle argued that all of the elements in our bodies had been formed in stars that had been and gone before our solar system had even formed. In their classic paper the elements are produced by three basic methods. The

  8. Health behaviours & problems among young people in India: Cause for concern & call for action

    Directory of Open Access Journals (Sweden)

    Singh Sunitha

    2014-01-01

    Full Text Available The young people in the age group of 10-24 yr in India constitutes one of the precious resources of India characterized by growth and development and is a phase of vulnerability often influenced by several intrinsic and extrinsic factors that affect their health and safety. Nearly 10-30 per cent of young people suffer from health impacting behaviours and conditions that need urgent attention of policy makers and public health professionals. Nutritional disorders (both malnutrition and over-nutrition, tobacco use, harmful alcohol use, other substance use, high risk sexual behaviours, stress, common mental disorders, and injuries (road traffic injuries, suicides, violence of different types specifically affect this population and have long lasting impact. Multiple behaviours and conditions often coexist in the same individual adding a cumulative risk for their poor health. Many of these being precursors and determinants of non communicable diseases (NCDs including mental and neurological disorders and injuries place a heavy burden on Indian society in terms of mortality, morbidity, disability and socio-economic losses. Many health policies and programmes have focused on prioritized individual health problems and integrated (both vertical and horizontal coordinated approaches are found lacking. Healthy life-style and health promotion policies and programmes that are central for health of youth, driven by robust population-based studies are required in India which will also address the growing tide of NCDs and injuries.

  9. Health behaviours & problems among young people in India: cause for concern & call for action.

    Science.gov (United States)

    Sunitha, Singh; Gururaj, Gopalkrishna

    2014-08-01

    The young people in the age group of 10-24 yr in India constitutes one of the precious resources of India characterized by growth and development and is a phase of vulnerability often influenced by several intrinsic and extrinsic factors that affect their health and safety. Nearly 10-30 per cent of young people suffer from health impacting behaviours and conditions that need urgent attention of policy makers and public health professionals. Nutritional disorders (both malnutrition and over-nutrition), tobacco use, harmful alcohol use, other substance use, high risk sexual behaviours, stress, common mental disorders, and injuries (road traffic injuries, suicides, violence of different types) specifically affect this population and have long lasting impact. Multiple behaviours and conditions often coexist in the same individual adding a cumulative risk for their poor health. Many of these being precursors and determinants of non communicable diseases (NCDs) including mental and neurological disorders and injuries place a heavy burden on Indian society in terms of mortality, morbidity, disability and socio-economic losses. Many health policies and programmes have focused on prioritized individual health problems and integrated (both vertical and horizontal) coordinated approaches are found lacking. Healthy life-style and health promotion policies and programmes that are central for health of youth, driven by robust population-based studies are required in India which will also address the growing tide of NCDs and injuries.

  10. Defining the culture and attitude towards dietary management actions in people undergoing haemodialysis.

    Science.gov (United States)

    Onbe, Hiromi; Oka, Michiyo; Shimada, Mikiko; Motegi, Emiko; Motoi, Yuji; Okabe, Ayako

    2013-06-01

    The present study was designed to clarify the structure of culture and the three components of attitude in a desirable attitude toward dietary management actions in outpatient haemodialysis patients who are in the maintenance phase of treatment. The participants in the study included nine patients undergoing chronic maintenance haemodialysis who have received guidance related to diet and had good test results. Ethnography, by means of participant observation and semi-structured interviews, was chosen as the research method. Desirable attitude of haemodialysis patients in dietary management actions was found to have a chronological progression in one of the components of attitude: propensity of behaviour. Change in behaviour was influenced by affect and cognition. At the base of the structure of attitude lay three factors: valuing cooking with seasonal ingredients and creating special meals for seasonal occasions; family draws near, shows care and gives support; and belief in information perceived to be good for the health, which was influenced by three components of attitude: affect, cognition, and propensity of behaviour, as well as culture. Participants continue to value the food culture that they grew up with, which involves their affect towards, and cognition of, dietary management. © 2013 European Dialysis and Transplant Nurses Association/European Renal Care Association.

  11. Beyond awareness of 'difference' and towards social action: 'Solidarity practice' alongside young people.

    Science.gov (United States)

    Afuape, Taiwo

    2016-07-01

    Who I am as a working-class black African woman cannot be disconnected from how I work. It shapes my lens with regard to power, difference and liberation. It is not surprising that I have been drawn to social justice approaches to psychological intervention, such as Narrative Therapy, Coordinated Management of Meaning (CMM), social constructionist systemic therapy and liberation psychology. These practices involve taking up the cause of the oppressed in ways that respect them as agents of their own liberation. In this article, I describe what I term 'solidarity practice' with young people and their families as a counter force resisting the increasingly blaming and individualising discourse of mainstream psychology, psychiatry and social policy.

  12. An Exploration of Canoeing Action as Therapy for Spinally Injured People

    Directory of Open Access Journals (Sweden)

    Catherine Halpin

    2004-01-01

    Full Text Available This paper outlines the design and building of a kayak machine, for use by person with spinal injury. We designed an eddy current brake to apply varying known torques on the system, which determine the power required by the user to run the machine. The output of an optocoupler circuit, applied to a computer con be calibrated to become a speedometer. The machine is computer controllable, and replicates well the action of kayaking on water. Use of the machine, in the Physiotherapy Departmen at the Nationale Rehabilitation Hospital, is, among other advantages, proving beneficial to a person´s sense of balance. This aspect will become the basis of further research.

  13. Schizophrenia as social discourse: how do people use their diagnosis for social action?

    Science.gov (United States)

    Haghighat, Rahman

    2008-12-01

    'Schizophrenia' can do things other than diagnose or stigmatize those so defined in that it can serve various forms of social action. Two hundred and fifty-eight randomly selected patients with an experience of schizophrenia and their relatives participated in the study of schizophrenia as social discourse. They used the diagnosis for political struggle and social leverage in such diverse forms as demonstration of the meaning of 'a schizophrenic', discursive intervention for ideological invitation, reclaiming personal worth (revalorization), solidarity with fellow patients and economic compensation. Despite the inherent value of the diagnosis in helping them get the right treatment, participants saw devaluing meaning in various designations for schizophrenia and, given choice, preferred certain formulations of the diagnosis over others in relation to their social discourse. To be effective, treatment models, service delivery and communication with patients must allow, interpret and incorporate their first person accounts (discourse) as a feature of their individuality and uniqueness in the therapeutic process. This is likely to increase their sense of wellbeing, empowerment and cooperation with the treatment.

  14. The legacy of Maria Curie Skłodowska

    Science.gov (United States)

    Sosnowski, Ryszard

    2011-01-01

    Maria Skłodowska Curie left us a great legacy. Her discovery of polonium and radium was incomparably greater than the mere discovery of new elements. Its significance lay in the discovery of a new form of matter, namely radioactive one, but also in her unveiling of the internal property of its atoms. Subsequently emitted radiation went on to play the role of a "natural accelerator" for both scientific research and in medical radiotherapy. It was thanks to these discoveries that the field of nuclear physics arose just a few decades later. As importantly the work of Maria Curie Skłodowska during the Great War demonstrated how important pure scientific discovery can be for society and its welfare.

  15. Special Workshop of Marie Curie Fellows on Research and Training in Physics and Technology

    CERN Document Server

    Patrice Loiez

    2002-01-01

    Photo 0210004_1: Prof. Ugo Amaldi, University of Milano Bicocca and Tera Foundation, Italy. Addressing the Marie Curie Workshop held at CERN 3-4 October 2002. Title of this talk:"Research Developments on Medical Physics". Photo 0210004_2: Marie Curie Fellows at CERN. Participating in Marie Curie Workshop held at CERN 3-4 October 2002.

  16. Curie and Pauli Spins in Lithium Intercalated MCMB

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The ESR signal of lithium intercalated MCMB can be well simulated by combination of a Lorentz curve and a Gauss curve. The ESR intensity of the Lorentz component is essentially independent of temperature while the Gauss component shows a linear change with the reciprocal of temperature, indicative of Pauli spin and Curie spin, respectively. The former is probably associated with the ordered (graphitized) structures while the latter with the disordered structures in the sample.

  17. Exhibition: Life and Achievements of Maria Sklodowska-Curie

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    The exhibition "Life and Achievements of Maria Sklodowska-Curie” will be held at CERN (Pas Perdus Corridor, 1st floor, building 61) from the 8 to 24 March.   It is organised under the auspices of the Ambassador R. Henczel, Permanent Representative of the Republic of Poland to the UN Office at Geneva to celebrate the 100th anniversary of the Nobel Prize in Chemistry given to Maria Sklodowska-Curie. The exhibition is also one of the events celebrating the 20th anniversary of Poland joining CERN as a Member State. Maria Sklodowska-Curie, Nobel Prize winner both in physics and chemistry, is one of the greatest scientists of Polish origin. The exhibition, consisting of 20 posters, presents her not only as a brilliant scientist, but also an exceptional woman of great heart, character and organizational talents, sensitive to contemporary problems. The authors are Mrs M. Sobieszczak-Marciniak, the director of the Maria Sklodowska-Curie Museum in Warsaw and Mrs H. Krajewska, the direct...

  18. The contribution of women to radiobiology: Marie Curie and beyond.

    Science.gov (United States)

    Gasinska, Anna

    2016-01-01

    Marie Sklodowska-Curie, an extraordinary woman, a Polish scientist who lived and worked in France, led to the development of nuclear energy and the treatment of cancer. She was the laureate of two Nobel Prizes, the first woman in Europe who obtained the degree of Doctor of Science and opened the way for women to enter fields which had been previously reserved for men only. As a result of her determination and her love of freedom, she has become an icon for many female scientists active in radiation sciences. They are successors of Maria Curie and without the results of their work, improvement in radiation oncology will not be possible. Many of them shared some elements of Maria Curie's biography, like high ethical and moral standards, passionate dedication to work, strong family values, and scientific collaboration with their husbands. The significance of Tikvah Alper, Alma Howard, Shirley Hornsey, Juliana Denekamp, Helen Evans, Eleanor Blakely, Elizabeth L. Travis, Fiona Stewart, Andree Dutreix, Catharine West, Peggy Olive, Ingela Turesson, Penny Jeggo, Irena Szumiel, Eleonor Blakely, Sara Rockwell and Carmel Mothersill contribution to radiation oncology is presented. All the above mentioned ladies made significant contribution to the development of radiotherapy (RT) and more efficient cancer treatment. Due to their studies, new schedules of RT and new types of ionizing radiation have been applied, lowering the incidence of normal tissue toxicity. Their achievements herald a future of personalized medicine.

  19. An exploration of the ecological validity of the Virtual Action Planning-Supermarket (VAP-S) with people with schizophrenia.

    Science.gov (United States)

    Aubin, Ginette; Béliveau, Marie-France; Klinger, Evelyne

    2015-08-28

    People with schizophrenia often have functional limitations that affect their daily activities due to executive function deficits. One way to assess these deficits is through the use of virtual reality programmes that reproduce real-life instrumental activities of daily living (IADLs). One such programme is the Virtual Action Planning-Supermarket (VAP-S). This exploratory study aimed to examine the ecological validity of this programme, specifically, how task performance in both virtual and natural environments compares. Case studies were used and involved five participants with schizophrenia, who were familiar with grocery shopping. They were assessed during both the VAP-S shopping task and a real-life grocery shopping task using an observational assessment tool, the Perceive, Recall, Plan and Perform (PRPP) System of Task Analysis. The results show that when difficulties were present in the virtual task, difficulties were also observed in the real-life task. For some participants, greater difficulties were observed in the virtual task. These difficulties could be explained by the presence of perceptual deficits and problems remembering the required sequenced actions in the virtual task. In conclusion, performance on the VAP-S by these five participants was generally comparable to the performance in a natural environment.

  20. Supporting institution-to-community transitions for people with psychiatric disabilities: Findings and implications from a participatory action research project

    Directory of Open Access Journals (Sweden)

    Andrea Gossett Zakrajsek

    2014-12-01

    Full Text Available Despite preference for community-based living, large numbers of people with psychiatric disabilities live in nursing homes throughout the US. Community-based services for this population are limited by public policy and service system barriers. This paper summarizes these barriers and presents the second phase of a participatory action research project jointly developed by university-based researchers and two Centers for Independent Living. A qualitative case study methodology was used to understand the experiences of three individuals with psychiatric disabilities reintegrating into the community from nursing homes. Findings revealed themes of social isolation, participation in virtual communities, variability of impairment experiences and unmet needs for community supports. In addition to thematic findings, action products were generated for the benefit of community partners. These products included national best practice resources and a needs assessment survey tool. Study findings and products point to specific systems change and policy recommendations to better support community reintegration for this population. These recommendations are discussed in light of U.S. healthcare reform and broader disability advocacy efforts.

  1. Developing the practice context to enable more effective pain management with older people: an action research approach

    Directory of Open Access Journals (Sweden)

    McCormack Brendan G

    2011-02-01

    Full Text Available Abstract Background This paper, which draws upon an Emancipatory Action Research (EAR approach, unearths how the complexities of context influence the realities of nursing practice. While the intention of the project was to identify and change factors in the practice context that inhibit effective person-centred pain management practices with older people (65 years or older, reflective critical engagement with the findings identified that enhancing pain management practices with older people was dependent on cultural change in the unit as a whole. Methods An EAR approach was utilised. The project was undertaken in a surgical unit that conducted complex abdominal surgery. Eighty-five percent (n = 48 of nursing staff participated in the two-year project (05/NIR02/107. Data were obtained through the use of facilitated critical reflection with nursing staff. Results Three key themes (psychological safety, leadership, oppression and four subthemes (power, horizontal violence, distorted perceptions, autonomy were found to influence the way in which effective nursing practice was realised. Within the theme of 'context,' effective leadership and the creation of a psychologically safe environment were key elements in the enhancement of all aspects of nursing practice. Conclusions Whilst other research has identified the importance of 'practice context' and models and frameworks are emerging to address this issue, the theme of 'psychological safety' has been given little attention in the knowledge translation/implementation literature. Within the principles of EAR, facilitated reflective sessions were found to create 'psychologically safe spaces' that supported practitioners to develop effective person-centred nursing practices in complex clinical environments.

  2. A Limb Action Detector Enabling People with Multiple Disabilities to Control Environmental Stimulation through Limb Action with a Nintendo Wii Remote Controller

    Science.gov (United States)

    Shih, Ching-Hsiang; Chang, Man-Ling; Shih, Ching-Tien

    2010-01-01

    This study assessed whether two persons with multiple disabilities would be able to control environmental stimulation using limb action with a Nintendo Wii Remote Controller and a newly developed limb action detection program (LADP, i.e., a new software program that turns a Wii Remote Controller into a precise limb action detector). This study was…

  3. Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

    DEFF Research Database (Denmark)

    Eriksen, Dan; Bahl, Christian R.H.; Smith, Anders

    2013-01-01

    The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model...... of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous...

  4. A brief report on an action learning group exploration of how older people adapt to change in later life

    Directory of Open Access Journals (Sweden)

    Francis C. Biley

    2011-12-01

    Full Text Available In collaboration with Age Concern UK, older people were invited to participate in action learning groups to explore how they adapt to change. Themes for discussion were initially identified using a nominal focus method. Discussions identified actual and desired methods of coping with changes in later life. A series of weekly meetings with three cohorts of urban, rural and sheltered accommodation participants with an average age of 81 years revealed that they were concerned with having to cope with and adapt to a wide range of experiences. These included the loss of sharing and reduced sociability, reduced mobility, bereavement, physical changes, having to move house and/or location, having to retire, and having to deal with outside agencies. In order to cope with these experiences, participants engaged in a range of activities that centered on aspects of communication and social networking. Participants talked to each other socially and informally, exchanging information and advice. When able, they also participated in more structured but non-specific social events during which time they also had the opportunity to support each other. Participants suggested that there was a role for statutory and nonstatutory bodies and professions such as mental health and community adult nursing, occupational therapy and social work to provide more formal social networking and information exchange opportunities.

  5. On the Conception of the State Administration by the Singaporean People's Action Party%论新加坡人民行动党的治国理念

    Institute of Scientific and Technical Information of China (English)

    赵大生

    2004-01-01

    Forty - five years since it came into power, the Singaporean People' s Action Party has made great achievements in the state administration. 3his essay analyzes the Party' s conception of administration and then concludes that the Party practices with the combination of democratic socialism, pragmatism, social reconciliation and honest and incorruptible governments.

  6. The Health Action Process Approach as a Motivational Model of Dietary Self-Management for People with Multiple Sclerosis: A Path Analysis

    Science.gov (United States)

    Chiu, Chung-Yi; Lynch, Ruth Torkelson; Chan, Fong; Rose, Lindsey

    2012-01-01

    The main objective of this study was to evaluate the health action process approach (HAPA) as a motivational model for dietary self-management for people with multiple sclerosis (MS). Quantitative descriptive research design using path analysis was used. Participants were 209 individuals with MS recruited from the National MS Society and a…

  7. [Chronological table of Mr. and Mrs. Curie and Mr. and Mrs. Joliot-Curie--in connection with the 100-year anniversary since Dr. H. Becquerel discovered radial ray in 1896].

    Science.gov (United States)

    Yamada, M

    1996-01-01

    This year (1996) is the 100th year since Dr. Henri Becquerel discovered radial rays in 1896 in France. In 1897, Dr. Pierre Curie and Marie Curie preliminarily reported the existence of polonium and radium which have radioactivity. H. Becquerel, Pierre and Marie Curie were awarded the Nobel Chemical Prize for discovering artificial radioactivity in 1935. I report herein the chronological table of Mr. and Mrs. Curie and Mr. and Mrs. Joliot-Curie spanning about one century.

  8. Frederic Joliot-Curie: the scientist and politics; Frederic Joliot-Curie: le savant et la politique

    Energy Technology Data Exchange (ETDEWEB)

    Pinault, M

    2000-07-01

    This book presents the biography of the French scientist, founder of the French nuclear research, in its social, political, and scientific context. Frederic Joliot-Curie, with his wife Irene, discovered the artificial radioactivity in 1934, won the Nobel price of chemistry in 1935, and demonstrated the existence of the fission phenomenon. He studied the chain reactions and the conditions of realization of a nuclear reactor, called 'Zoe', which was built in 1948. He was the very first chief-commissary of the French atomic energy commission (CEA). (J.S.)

  9. Phase Transition in Conditional Curie-Weiss Model

    CERN Document Server

    Opoku, Alex A; Ansah, Richard

    2016-01-01

    This paper proposes a conditional Curie-Weiss model as a model for opinion formation in a society polarized along two opinions, say opinions 1 and 2. The model comes with interaction strength $\\beta>0$ and bais $h$. Here the population in question is divided into three main groups, namely: Group one consisting of individuals who have decided on opinion 1. Let the proportion of this group be given by $s$. Group two consisting of individauls who have chosen opinion 2. Let $r$ be their proportion. Group three consisting of individuals who are yet to decide and they will decide based on their environmental conditions. Let $1-s-r$ be the proportion of this group. We show that the specific magnetization of the associated conditional Curie-Weiss model has a first order phase transition (discontinuous jump in specific magnetization) at $\\beta^*=\\left(1-s-r\\right)^{-1}$. It is also shown that not all the discontinuous jumps in magnetization will result in phase change. We point out how an extention of this model could...

  10. Controlling temperature in magnetic hyperthermia with low Curie temperature particles

    Science.gov (United States)

    Astefanoaei, Iordana; Dumitru, Ioan; Chiriac, Horia; Stancu, Alexandru

    2014-05-01

    Hyperthermia induced by the heating of magnetic particles (MPs) in alternating magnetic field receives a considerable attention in cancer therapy. An interesting development in the studies dedicated to magnetically based hyperthermia is the possibility to control the temperature using MPs with selective magnetic absorption properties. This paper analyzes the temperature field determined by the heating of MPs having low Curie temperature (a FeCrNbB particulate system) injected within a malignant tissue, subjected to an ac magnetic field. The temperature evolution within healthy and tumor tissues was analyzed by finite element method simulations in a thermo-fluid model. The cooling effect produced by blood flowing in blood vessels was considered. This effect is intensified at the increase of blood velocity. The FeCrNbB particles, having the Curie temperature close to the therapeutic range, transfer the heat more homogeneous in the tumor keeping the temperature within the therapeutic range in whole tumor volume. Having the possibility to automatically control the temperature within a tumor, these particle type opens new research horizons in the magnetic hyperthermia.

  11. Curie temperature rising by fluorination for Sm2Fe17

    Directory of Open Access Journals (Sweden)

    Matahiro Komuro

    2013-02-01

    Full Text Available Fluorine atoms can be introduced to Sm2Fe17 using XeF2 below 423 K. The resulting fluorinated Sm2Fe17 powders have ferromagnetic phases containing Sm2Fe17FY1(0Curie temperature from 403 K for Sm2Fe17 to 675 K. This increase can be explained by the magneto-volume effect.

  12. Curie law for systems described by kappa distributions

    Science.gov (United States)

    Livadiotis, George

    2016-01-01

    We derive the magnetization of a system, Pierre Curie's law, for paramagnetic particles out of thermal equilibrium described by kappa distributions. The analysis uses the theory and formulation of the kappa distributions that describe particle systems with a non-zero potential energy. Among other results, emphasis is placed on the effect of kappa distribution on the phenomenon of having strong magnetization at high temperatures. At thermal equilibrium, high temperature leads to weak magnetization. Out of thermal equilibrium, however, strong magnetization at high temperatures is rather possible, if the paramagnetic particle systems reside far from thermal equilibrium, i.e., at small values of kappa. The application of the theory to the space plasma at the outer boundaries of our heliosphere, the inner heliosheath, leads to an estimation of the ion magnetic moment for this space plasma, that is, μ ≈ 138+/-7 \\text{eV/nT} .

  13. Emotion regulation, depression and self-harming behaviours in people with borderline personality disorder: the moderating role of action vs. state orientation

    Directory of Open Access Journals (Sweden)

    Sybilla Blasczyk-Schiep

    2016-01-01

    Full Text Available Background The aim of this research is to determine the level of emotion regulation, studied through the method of variable action orientation vs. state and its relationship with depressiveness and dimension of the reasons for living and self-harming behaviour of patients with borderline personality disorder. Participants and procedure The research studied 61 patients diagnosed with an emotionally unstable personality of borderline type. The research used the Polish adaptation of tests to measure the action vs. state orientation (SSI-K, the self-harming behaviour (SHI, depression (BDI and the reasons for living vs. suicidal tendency (RFL-I. Results In people with borderline personality disorder, the level of emotion regulation (action vs. state orientation, reasons for living and depression are predictors of self-harming behaviour. The experience of a depressive episode or lack thereof does not have a relationship with the increase of self-harming. Analysis of the interaction between variables showed that the reasons for living and the action orientation after failure are related to the reduction of self-harming behaviour in all subjects. In depressed people, state orientation is associated with an increase in the action orientation with decreased self-destructive behaviours. Conclusions High levels of reasons for living in interaction with the action orientation have a negative relationship with the self-harming behaviour of patients diagnosed with borderline personality disorder. Among those subjects, depressive patients, a statistically lower level of self-harm is related to the action orientation. These results suggest that therapeutic treatment is important to activate both reasons for living as well as action orientation as effective dimensions in preventing self-harming.

  14. Emotion regulation, depression and self-harming behaviours in people with borderline personality disorder: the moderating role of action vs. state orientation

    Directory of Open Access Journals (Sweden)

    Sybilla Blasczyk-Schiep

    2016-01-01

    Full Text Available Background The aim of this research is to determine the level of emotion regulation, studied through the method of variable action orientation vs. state and its relationship with depressiveness and dimension of the reasons for living and self-harming behaviour of patients with borderline personality disorder. Participants and procedure The research studied 61 patients diagnosed with an emotionally unstable personality of borderline type. The research used the Polish adaptation of tests to measure the action vs. state orientation (SSI-K, the self-harming behaviour (SHI, depression (BDI and the reasons for living vs. suicidal tendency (RFL-I. Results In people with borderline personality disorder, the level of emotion regulation (action vs. state orientation, reasons for living and depression are predictors of self-harming behaviour. The experience of a depressive episode or lack thereof does not have a relationship with the increase of self-harming. Analysis of the interaction between variables showed that the reasons for living and the action orientation after failure are related to the reduction of self-harming behaviour in all subjects. In depressed people, state orientation is associated with an increase in the action orientation with decreased self-destructive behaviours. Conclusions High levels of reasons for living in interaction with the action orientation have a negative relationship with the self-harming behaviour of patients diagnosed with borderline personality disorder. Among those subjects, depressive patients, a statistically lower level of self-harm is related to the action orientation. These results suggest that therapeutic treatment is important to activate both reasons for living as well as action orientation as effective dimensions in preventing self-harming.

  15. The effect of personal and group discrimination on the subjective well-being of people with mental illness: the role of internalized stigma and collective action intention.

    Science.gov (United States)

    Pérez-Garín, Daniel; Molero, Fernando; Bos, Arjan E R

    2017-04-01

    The goal of this study is to test a model in which personal discrimination predicts internalized stigma, while group discrimination predicts a greater willingness to engage in collective action. Internalized stigma and collective action, in turn, are associated to positive and negative affect. A cross-sectional study with 213 people with mental illness was conducted. The model was tested using path analysis. Although the data supported the model, its fit was not sufficiently good. A respecified model, in which a direct path from collective action to internalized stigma was added, showed a good fit. Personal and group discrimination appear to impact subjective well-being through two different paths: the internalization of stigma and collective action intentions, respectively. These two paths, however, are not completely independent, as collective action predicts a lower internalization of stigma. Thus, collective action appears as an important tool to reduce internalized stigma and improve subjective well-being. Future interventions to reduce the impact of stigma should fight the internalization of stigma and promote collective action are suggested.

  16. A Comparative Study On The Action Potential Simulation (APS Therapy And The Routine Physiotherapy Protocol In Knee Osteoarthritisin Elderly People

    Directory of Open Access Journals (Sweden)

    Abbas Rahimi

    2012-04-01

    Full Text Available Background and Aim: Knee osteoarthritis is the most common cause for which the elderly people refere to physiotherapy outpatient clinics. This study aimed to investigate the effects of the Action Potential Stimulation (APS Therapy and the routine physiotherapy (PT protocol on relieving pain and swelling as well as the duration of the relief period in patients with knee osteoarthritis. Materials and Methods: 69 patients (62 females & 7 males with knee osteoarthritis were recruited in this study. The subjects were divided into two groups including APS Therapy (n=37, mean age: 55±13 years old and the routine PT protocol (n=32, mean age: 61±14 years old groups. A 10-session treatment period was carried out for each group; and their pain and swelling were measured at the first, fifth and tenth sessions and also one-month after the last session (follow up. The swelling was measured using measuring the circumference of the knee on the patella, 5 Cm above and 5 Cm below the patella. The routine PT protocol consisted of hot pack, ultrasound, TENS and exercise; and the APS therapy protocol included hot pack, APS Therapy and the same exercise. During the follow up, 50 out of 61 subjects were called on the phone and any pain changes were recorded.Results: In terms of swelling, the results showed significant reduction just on the patella only in the APS Therapy group (P<0.05. Visual Analogue Pain Scale (VAPS indicated a significant pain reduction in both groups. However, the APS Therapy group showed significantly pain reduction at the end of sessions five, ten and the follow up session (P<0.05. It was also revealed that while routine PT subjects showed no significant pain changes between the tenth and the follow up session, a gradual pain reduction was seen in the APS therapy group during this period (P<0.05. A gradual dosage reduction was recorded only in the APS therapy group, indicating a slight correlation with pain reduction (r=0.4.Conclusion: The

  17. Special Workshop of Marie Curie Fellows on Research and Training in Physics and Technology

    CERN Multimedia

    Patrice Loiez

    2002-01-01

    Photo 0210006_07a: Prof. L. Maiani, Director General of CERN. Addressing the Marie Curie Worshop held at CERN 3-4 October 2002. Title of this talk:"Function of Large-scale Facilities and Centres of Excellence". Photo 0210006_14a: Prof. L. Maiani, Director General of CERN. Addressing the Marie Curie Worshop held at CERN 3-4 October 2002. Title of this talk:"Function of Large-scale Facilities and Centres of Excellence". Photo 0210006_22: Dr. David Plane (CERN) introducing Dr. Theodore Papazoglou from the European Commission. Addressing the Marie Curie Worshop held at CERN 3-4 October 2002. Title of this talk:"Marie Curie Fellowships in the 6th Framework Programme". Photo 0210006_28a: Dr. Nora Brambilla, Vice-President of Marie Curie Fellow Association, INFN and Dept. of Physics, University of Milan. Addressing the Marie-Curie Worshop held at CERN 3-4 October 2002. Title of this talk:"Marie Curie Fellows Association". Photo 0210006_29a: Dr. Nora Brambilla, Vice-President of Marie Curie Fellow Association, INFN a...

  18. Marie Curie nurses: enabling patients with cancer to die at home.

    Science.gov (United States)

    Higginson, Irene J; Wilkinson, Susie

    2002-05-01

    Marie Curie Cancer Care established its nursing service in 1958; however, the service has had little formal evaluation. This study aimed to describe and evaluate the care provided by Marie Curie nurse, and in particular to determine whether patients in their care remained and died at home. Two existing data sets were used: data on all patients referred to the Marie Curie Nursing Services in 147 areas of England, Wales, Scotland and Northern Ireland for 26 months, and data on cancer death registrations in England. A request for a Marie Curie nurse was made for 26,632 patients, 97% of whom had cancer and 11% of whom lived alone. The amount of care provided varied enormously (Marie Curie nurses facilitated home death for many patients. Services need to ensure that mechanisms are in place to achieve data collection. Rigorous prospective evaluation is needed in the future.

  19. The mysterious malleability of titanomagnetite Curie temperatures: An update

    Science.gov (United States)

    Jackson, M. J.; Bowles, J.; Lappe, S. C.; Berquo, T. S.; Solheid, P.

    2015-12-01

    Intermediate-composition titanomagnetites (TM30-TM50) have recently been shown to have Curie temperatures (Tc) that depend not only on composition but also quite strongly on thermal history, with increases of 100°C or more in Tc produced by moderate-temperature (300-400° C) annealing in the lab or in slow natural cooling, and equally large decreases produced by more rapid cooling ("quenching") from higher temperatures [e.g., Bowles et al 2013, Nature Communications]. The phenomenon is robustly defined and repeatable, but the underlying mechanism remains enigmatic, although it presumably involves some rearrangement of metal cations within the spinel lattice. New high-and low-temperature measurements, including hysteresis, frequency-dependent AC susceptibility (k(f,T)) and Mössbauer spectroscopy, were carried out to help shed light on the nanoscale mechanisms responsible for the observed changes in Tc. Fabian et al [2015, GJI] have shown for ferrimagnetic compositions in the hematite-ilmenite system that high-T hysteresis measurements exhibit a peak in high-field slope at the Curie temperature, and that the magnitude (area) of this peak is a strong function of cation ordering degree. Our data for synthetic titanomagnetites in quenched and annealed states show some indications of this, although the relationship is not perfectly systematic. On the other hand, our new low-T Mössbauer spectra, measured in the quenched and annealed states, are indistinguishable and argue against any change in site occupancy. Church et al [2011, G3] have proposed that the sharp change in low-T magnetic behavior of intermediate titanomagnetites is a "pinning transition" due to redistribution and localization of ferrous ions within the octahedral sites. Our new k(f,T) results show that the pinning transition in some samples is strongly affected by prior annealing or quenching, suggesting that these treatments affect the intrasite cation distributions. Such an idea is consistent with

  20. Curie depth vs. flat subduction in Central Mexico

    Science.gov (United States)

    Manea, Marina; Constantin Manea, Vlad

    2010-05-01

    Forearcs located above active subduction zones are generally characterized by low heat flow values, and this is considered a consequence of the subduction of cold slabs beneath continental plates. In the case of Central Mexico, the geometry of the subducting Cocos plate is quite unusual, the slab runs flat for several hundreds of kilometers before plunging into the asthenosphere. This particular geometry has a strong influence on the temperature distribution of the overriding plate where very low heatflow values are recorded (15-30 mW/m2). In this paper we use the aeromagnetic map of Mexico in order to infer the maximum depth of magnetic source, regarded as Curie depth and corresponding to a temperature of 575-600C°. Our spectral analysis revealed the existence of a deep magnetic source (30-40 km). We compare these results with the thermal structure associated with flat slab subduction in the area. We obtained a good agreement between the two estimates and we conclude that flat slab subduction in Central Mexico controls the maximum depth of magnetic sources in the overriding plate.

  1. Kitchen Gardening Practices through People's Participation : An Action Research Project of three Marginalized bagdi Villages in Bangladesh

    OpenAIRE

    2013-01-01

    The purpose of this paper is to assess the role of households and their participatory initiatives toward their enhanced welfare. The paper will analyze how the marginalized and less privileged bagdi community actively participated and collaboratively worked to learn kitchen gardening technology through a participatory action research project. The project was undertaken among three bagdi paras from different neighboring villages during 2009 and 2010. This action research project was funded by ...

  2. Thermal expansion of gadolinium in the vicinity of the Curie point. [270 to 320/sup 0/K, Curie point exponents

    Energy Technology Data Exchange (ETDEWEB)

    Dolejsi, D.A.

    1977-02-01

    The c- and a-axis linear thermal expansivities of high purity single crystals of gadolinium were measured in the temperature range 270/sup 0/K to 320/sup 0/K. Length changes were translated to capacitance changes with a modified normal geometry 3-terminal capacitance dilatometer. An ac 3-terminal capacitance bridge was employed to measure nominal 10 pF capacitances to a precision of 10/sup -7/ pF, which corresponds to a relative length change sensitivity of 10/sup -10/. A 25 ohm platinum resistance thermometer was used to detect the dilatometer temperature to a precision of 10 ..mu..K with an ac resistance bridge. The c-axis expansivity was negative and had a large (approximately equal to 10/sup -4/ K/sup -1/) peak at 293.435/sup 0/K, while the a-axis expansivity was positive and had a smaller (approximately equal to 10/sup -5/ K/sup -1/) peak at 293.363/sup 0/K. The values of the Curie temperatures (T/sub c/'s) and critical point exponents for the c- and a-axis crystals were obtained from fitting power law equations to the expansivities.

  3. Lifting the lid of the "black intervention box" - the systematic development of an action competence programme for people with screen-detected dysglycaemia

    Directory of Open Access Journals (Sweden)

    Sandbæk Annelli

    2010-05-01

    Full Text Available Abstract Background The evidence gained from effective self-management interventions is often criticised for the ambiguity of its active components, and consequently the obstruction of their implementation into daily practice. Our aim is to report how an intervention development model aids the careful selection of active components in an intervention for people with dysglycaemia. Methods The first three phases of the UK Medical Research Council's model for developing complex interventions in primary care were used to develop a self-management intervention targeting people with screen-detected dysglycaemia. In the preclinical phase, the expected needs of the target group were assessed by review of empirical literature and theories. In phase I, a preliminary intervention was modelled and in phase II, the preliminary intervention was pilot tested. Results In the preclinical phase the achievement of health-related action competence was defined as the overall intervention goal and four learning objectives were identified: motivation, informed decision-making, action experience and social involvement. In Phase I, the educational activities were defined and the pedagogical tools tested. In phase II, the intervention was tested in two different primary healthcare settings and adjusted accordingly. The 18-hour intervention "Ready to Act" ran for 3 months and consisted of two motivational one-to-one sessions conducted by nurses and eight group meetings conducted by multidisciplinary teams. Conclusions An intervention aimed at health-related action competence was successfully developed for people with screen-detected dysglycaemia. The systematic and transparent developmental process is expected to facilitate future clinical research. The MRC model provides the necessary steps to inform intervention development but should be prioritised according to existing evidence in order to save time.

  4. Special Workshop of Marie Curie Fellows on Research and Training in Physics and Technology.

    CERN Document Server

    Patrice Loiez

    2002-01-01

    Photo 0210008_05a: Dr, Rolf Landua (CERN) explaining to participants of the Marie Curie Workshop (held at CERN 3-4 October 2002) the ATHENA experiment and the Antiproton Decelerator. Photo 0210008_06a: Dr, Rolf Landua (CERN) explaining to participants of the Marie Curie Workshop (held at CERN 3-4 October 2002) the ATHENA experiment and the Antiproton Decelerator. Photo 0210008_08a: Dr, Rolf Landua (CERN) explaining to participants of the Marie Curie Workshop (held at CERN 3-4 October 2002) the ATHENA experiment and the Antiproton Decelerator. Photo 0210008_09a: Dr, Rolf Landua (CERN) explaining to participants of the Marie Curie Workshop (held at CERN 3-4 October 2002) the ATHENA experiment and the Antiproton Decelerator.

  5. Transgender People and HIV Prevention: What We Know and What We Need to Know, a Call to Action

    OpenAIRE

    Mayer, Kenneth H.; Grinsztejn, Beatriz; El-Sadr, Wafaa M.

    2016-01-01

    Abstract: Transgender people have been disproportionally affected by HIV, particularly transgender women. Their increased vulnerability to HIV is due to multiple issues, including biological (eg, increased efficiency of HIV transmission through receptive anal sex), epidemiological (eg, increased likelihood of having HIV-infected partners), structural (eg, social stigma limiting employment options), and individual factors (eg, internalized stigma leading to depression and substance use and ris...

  6. The behaviour of physical quantities in thin films near the Curie point

    Science.gov (United States)

    Korneta, W.; Pytel, Z.

    1982-05-01

    The Valenta model of a thin ferromagnetic film in the critical region above the Curie point has been considered. Spatial and temperature dependence for spin correlation time and magnetic susceptibility has been obtained and discussed. The results have been generalized and expressions describing the behaviour of any physical quantity in more complicated models of a thin ferromagnetic film near the Curie temperature have been given.

  7. Effect of Gd doping and O deficiency on the Curie temperature of EuO

    KAUST Repository

    Jutong, Nuttachai

    2015-01-27

    The effect of Gd doping and O deficiency on the electronic structure, exchange interaction, and Curie temperature of EuO in the cubic and tetragonal phases is studied by means of density functional theory. For both defects, the Curie temperature is found to exhibit a distinct maximum as a function of the defect concentration. The existence of optimal defect concentrations is explained by the interplay of the on-site, RKKY, and superexchange contributions to the magnetism.

  8. III Action Plan for People with Disabilities in Madrid Autonomous Community (2012-2015. Analysis and evaluation of the Educational Area within this plan

    Directory of Open Access Journals (Sweden)

    Gerardo ECHEITA SARRIONANDIA

    2017-09-01

    Full Text Available This paper presents the analysis and assessment of the Education Area of the Plan of Action for Persons with Disabilities in the Autonomous Community of Madrid (2012-2015, carried out after using a Delphi Method with a group of six experts. This work was aimed to make a formative evaluation of the Plan implemented, so that the analysis generated could be used by both managers of the next plan in project, as for educational stakeholders involved in the education field, but obviously, by people with disabilities as well, in order to support them to exercise effectively their rights. The synthesis document shows synthetically the main strengths of the plan but, mostly, the weaknesses or points to improve. Among these should be noted the need of a more efficient structure of programs and actions with clear indicators of achievement. Also there is a need of rethinking current models and areas of intervention, in order to those were much more consistent and coherent with the right to an education inclusive that has been established in the Convention of Rights of People with Disability, and with the models of understanding and intervention to improve their quality of life.

  9. Developing translational medicine professionals : The Marie Skłodowska-Curie action model

    NARCIS (Netherlands)

    Petrelli, Alessandra; Prakken, Berent J.|info:eu-repo/dai/nl/156714183; Rosenblum, Norman D.

    2016-01-01

    End goal of translational medicine is to combine disciplines and expertise to eventually promote improvement of the global healthcare system by delivering effective therapies to individuals and society. Well-trained experts of the translational medicine process endowed with profound knowledge of

  10. Developing translational medicine professionals : The Marie Skłodowska-Curie action model

    NARCIS (Netherlands)

    Petrelli, Alessandra; Prakken, Berent J.; Rosenblum, Norman D.

    2016-01-01

    End goal of translational medicine is to combine disciplines and expertise to eventually promote improvement of the global healthcare system by delivering effective therapies to individuals and society. Well-trained experts of the translational medicine process endowed with profound knowledge of bio

  11. 新加坡人民行动党执政的战略思维%Strategic Thinking of the People's Action Party in Singapore

    Institute of Scientific and Technical Information of China (English)

    吴礼庆; 贾凌昌

    2014-01-01

    新加坡经济社会的跨越发展归因于人民行动党执政的战略思维。人民行动党以战略思维的客观性和价值性为规范和导引,实现了经济转型实证化和人民评价价值化的匹配和统一;人民行动党以战略思维的关联性和创造性为方法和理论根据,在消除儒学与自由主义的畛域的同时使二者成功联姻,开创了“软威权主义”的治国先河;人民行动党以战略判断和决策思维作为基本思维程序,保证了执政判断与决策的科学性,确保了人民行动党的执政地位。%The strategic thinking of the People's Action Party has contributed to the economic and social leaping development in Singapore. With objectivity and value of strategic thinking as norm and guidance, the People's Action Party has matched and integrated the positive economic transition and valuation of people's assessment; With the relevance and creativity of strategic thinking as method and rationale, they have successfully started soft authoritarianism whilst eliminating the boundaries between Confucianism and liberalism and making them well-matched; With strategic estimate and decision-making thought as basic thinking process, they have guaranteed scientific governance, judgment, decision-making and maintained their ruling status.

  12. AN ANSWER TO DIVERSITY: AFFIRMATIVE ACTION POLICIES FOR TRADITIONAL PEOPLE -- THE UNIVERSIDADE FEDERAL DO PARÁ (FEDERAL UNIVERSITY OF PARÁ EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Jane Felipe Beltrão

    2011-12-01

    Full Text Available Research analyzes the Admissions Program and the new reality of affirmative action measures at the Federal University of Pará, its context and implications. A special interest regards higher education and cultural diversity. Study reflects upon the goals of such policy; the different arguments among actors involved; the institutional conduct; and the benefits and difficulties faced to implement the program. The principle that guides the study understands the rights of indigenous populations in their access to University and sees the measures as a victory of the indigenous movement. Challenges remain, though, at two levels: first, it is necessary to develop policy to face institutional and social resistance to the implementation of the program; second, it is paramount to support the indigenous students in their needs in their new academic life.

  13. Call-to-action: timely and appropriate treatment for people with type 2 diabetes in Latin America.

    Science.gov (United States)

    Escalante, Miguel; Gagliardino, Juan José; Guzmán, Juan Rosas; Tschiedel, Balduino

    2014-06-01

    Latin America faces a unique set of challenges in the treatment of type 2 diabetes mellitus (T2DM). This report identifies these challenges and provides a framework for implementation of the strategies, policies and education programs which are needed to optimize the management of this condition. In order to improve future diabetes care, it will be necessary to address existing problems such as limitation of resources, inadequate management of hyperglycemia, and inappropriate education of healthcare team members and people with diabetes. Achieving these goals will require collaborative efforts by many individuals, groups and organizations. These include policymakers, international organizations, healthcare providers, those responsible for setting medical school curricula, patients and society as a whole. It is anticipated that improved/continuing education of healthcare professionals, diabetes self-management education and development of a team approach for T2DM care will lead to optimization of patient-centered care. Implementation of multicentric demonstration studies and rational use of antidiabetic treatments will be necessary to demonstrate the long-term favorable impact of these strategies upon quality of care, prevention of chronic complications, mortality, healthcare costs and patient quality of life. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  14. Calculation of exchange integrals and Curie temperature for La-substituted barium hexaferrites

    Science.gov (United States)

    Wu, Chuanjian; Yu, Zhong; Sun, Ke; Nie, Jinlan; Guo, Rongdi; Liu, Hai; Jiang, Xiaona; Lan, Zhongwen

    2016-10-01

    As the macro behavior of the strength of exchange interaction, state of the art of Curie temperature Tc, which is directly proportional to the exchange integrals, makes sense to the high-frequency and high-reliability microwave devices. Challenge remains as finding a quantitative way to reveal the relationship between the Curie temperature and the exchange integrals for doped barium hexaferrites. Here in this report, for La-substituted barium hexaferrites, the electronic structure has been determined by the density functional theory (DFT) and generalized gradient approximation (GGA). By means of the comparison between the ground and relative state, thirteen exchange integrals have been calculated as a function of the effective value Ueff. Furthermore, based on the Heisenberg model, the molecular field approximation (MFA) and random phase approximation (RPA), which provide an upper and lower bound of the Curie temperature Tc, have been adopted to deduce the Curie temperature Tc. In addition, the Curie temperature Tc derived from the MFA are coincided well with the experimental data. Finally, the strength of superexchange interaction mainly depends on 2b-4f1, 4f2-12k, 2a-4f1, and 4f1-12k interactions.

  15. Relationship between Curie isotherm surface and Moho discontinuity in the Arabian shield, Saudi Arabia

    Science.gov (United States)

    Aboud, Essam; Alotaibi, Abdulrahman M.; Saud, Ramzi

    2016-10-01

    The Arabian shield is a Precambrian complex of igneous and metamorphic rocks located approximately one-third of the way across the western Arabian Peninsula, with uncommon exposures along the Red Sea coast. We used aeromagnetic data acquired by others over the past several decades to estimate the depth to the Curie temperature isotherm throughout this region. Our goal was to further understand the lithospheric structure, thermal activity, and seismicity to assist in geothermal exploration. We also compared the Curie temperature isotherm with the crustal thickness to investigate the possibility that mantle rocks are magnetic in some parts of the Arabian shield. Depths to the Curie isotherm were estimated by dividing the regional aeromagnetic grid into 26 overlapping windows. Each window was then used to estimate the shape of the power spectrum. The windows had dimensions of 250 × 250 km to allow investigation of depths as deep as 50 km. The results show the presence of a Curie isotherm at a depth of 10-20 km near the Red Sea, increasing to 35-45 km in the interior of the Arabian shield. The Curie isotherm generally lies above the Moho in this region but deepens into the mantle in some locations, notably beneath the Asir Terrane.

  16. Why do people fail to turn good intentions into action? The role of executive control processes in the translation of healthy eating intentions into action in young Scottish adults

    Directory of Open Access Journals (Sweden)

    Allan Julia L

    2008-04-01

    Full Text Available Abstract Background Despite the significant health benefits associated with eating healthily, diet is extremely difficult to change, with the majority of people who intend to eat more healthily failing to do so. Recent evidence has suggested that the ability to turn intentions into actions may be related to individual differences in one facet of executive control – cognitive inhibition (i.e. the ability to inhibit irrelevant information and suppress prepotent responses. The present study investigates the role of this and other executive processes (inhibition, task switching, planning and cognitive flexibility in the translation of dietary intentions into action. In addition, as the literature suggests that weak executive control may be associated with hyper-responsivity to cues to action, the role of executive processes in susceptibility to environmental food cues and responses to If-Then plans designed to cue intended behaviour are investigated. Methods Future intentions about consumption of fruits and vegetables and snack foods will be measured in a sample of young adults. Actual consumption of the target foods will be recorded with computerised diaries over a subsequent 3-day period. Performance on a battery of established executive control tasks (Go-NoGo, Tower task, Verbal Fluency task and Trail-Making will be used to predict the discrepancy between intended and actual dietary behaviour. In addition, executive control scores will be used to predict reported susceptibility to environmental food cues and benefit derived from the use of 'If-Then plans' designed to cue intended behaviour. Discussion Our findings will add to understanding about the role of executive control in translating intentions into actions and may demonstrate potential for future public health interventions. If participants with weak executive control are found to be less likely to eat as they intend than those with strong executive control, then interventions that

  17. Variations in Moho and Curie depths and heat flow in Eastern and Southeastern Asia

    Science.gov (United States)

    Li, Chun-Feng; Wang, Jian

    2016-03-01

    The Eastern and Southeastern Asian regions witness the strongest land-ocean and lithosphere-asthenosphere interactions. The extreme diversity of geological features warrants a unified study for a better understanding of their geodynamic uniqueness and/or ubiquity from a regional perspective. In this paper we have explored a large coverage of potential field data and have detected high resolution Moho and Curie depths in the aforementioned regions. The oldest continental and oceanic domains, i.e. the North China craton and the Pacific and Indian Ocean have been found thermally perturbed by events probably linked to small-scale convection or serpentinization in the mantle and to numerous volcanic seamounts and ridges. The thermal perturbation has also been observed in proximity of the fossil ridge of the western Philippine Sea Basin, which shows anomalously small Curie depths. The western Pacific marginal seas have the lowest Moho temperature, with Curie depths generally larger than Moho depths. The contrary is true in most parts of easternmost Eurasian continent. Magmatic processes feeding the Permian Emeishan large igneous province could have also been genetically linked to deep mantle/crustal processes beneath the Sichuan Basin. The regionally elongated magnetic features and small Curie depths along the Triassic Yangtze-Indochina plate boundary suggest that the igneous province could be caused by tectonic processes along plate margins, rather than by a deep mantle plume. At the same time, we interpret the Caroline Ridge, the boundary between the Pacific and the Caroline Sea, as a structure having a continental origin, rather than as hotspot or arc volcanism. The surface heat flow is primarily modulated by a deep isotherm through thermal conduction. This concordance is emphasized along many subduction trenches, where zones of large Curie depths often correspond with low heat flow. Local or regional surface heat flow variations cannot be faithfully used in inferring

  18. Enhancement of Curie temperature of barium hexaferrite by dense electronic excitations

    Directory of Open Access Journals (Sweden)

    Manju Sharma

    2014-07-01

    Full Text Available Curie temperature of polycrystalline barium hexaferrite (BaFe12O19, prepared by conventional solid state technique, is anomalously and significantly enhanced (by nearly 15% by energetic heavy ion irradiation (150 MeV, Ag12+ at ambient temperature due to dense electronic excitations Moderate fluence (1 × 1012 ions/cm2 induces structural defects giving rise to above enhancement. As established by X-ray diffraction, scanning electron microscopy and Raman studies, higher fluence (1 × 1013 ions/cm2 has structurally transformed the sample to amorphous phase with marginal change in magnetization and Curie temperature.

  19. Enhancement of Curie temperature of barium hexaferrite by dense electronic excitations

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, Manju; Kashyap, Subhash C.; Gupta, Hem C. [Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (India); Dimri, Mukesh C. [Ajay Kumar Garg Engineering College, Ghaziabad - 201009 (India); Asokan, K. [Materials Science Group, Inter University Accelerator Center, New Delhi-110067 (India)

    2014-07-15

    Curie temperature of polycrystalline barium hexaferrite (BaFe{sub 12}O{sub 19}), prepared by conventional solid state technique, is anomalously and significantly enhanced (by nearly 15%) by energetic heavy ion irradiation (150 MeV, Ag{sup 12+}) at ambient temperature due to dense electronic excitations Moderate fluence (1 × 10{sup 12} ions/cm{sup 2}) induces structural defects giving rise to above enhancement. As established by X-ray diffraction, scanning electron microscopy and Raman studies, higher fluence (1 × 10{sup 13} ions/cm{sup 2}) has structurally transformed the sample to amorphous phase with marginal change in magnetization and Curie temperature.

  20. Ciencia e industria en el desarrollo de la radiactividad: el caso de Marie Curie

    OpenAIRE

    Roqué, Xavier

    1997-01-01

    Not available.Se argumenta que Marie Curie desarrolló sus investigaciones en radiactividad en estrecha relación con la industria de los radioelementos. Esta relación incluyó desde el desarrollo de procedimientos de extracción para diversas sustancias radiactivas, hasta la promoción de su propio laboratorio industrial. La actividad industrial de Curie se aviene mal con su imagen heroica de científica pura, sacrificada y carente de medios, imagen que, paradójicamente, se retrotrae a las campaña...

  1. Curie Transition of NC Nickel by Mechanical Spectroscopy and Magnetization Study

    Institute of Scientific and Technical Information of China (English)

    LI Ping-Yun; CAO Zhen-Hua; ZHANG Xi-Yan; WU Xiao-Lei; HUANG Yi-Neng; MENG Xiang-Kang

    2009-01-01

    Mechanical spectroscopy measurement is performed to study the internal friction of nanocrystalline (NC) nickel with an average grain size of 23 nm from room temperature to 610 K.An internal friction peak is observed at about 550 K,which corresponds to the Curie transition process of the NC nickel according to the result of magnetization test.Moreover,the fact that the Curie temperature of NC nickel is lower than that of coarse-grained nickel is explained by an analytical model based on the weakening of cohesive energy.

  2. Curie temperatures of dilute magnetic semiconductors from LDA+U electronic structure calculations

    Energy Technology Data Exchange (ETDEWEB)

    Sato, K. [ISIR, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)]. E-mail: ksato@cmp.sanken.osaka-u.ac.jp; Dederichs, P.H. [IFF, Forschungszentrum Juelich, D-52425 Juelich (Germany); Katayama-Yoshida, H. [ISIR, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)

    2006-04-01

    The magnetic properties of dilute magnetic semiconductors (DMS) are calculated by using the local density approximation +U(LDA+U) method. In the LDA+U, occupied d-states in (Ga, Mn)As are predicted at lower energy than in the LDA and p-d exchange interaction explains calculated concentration dependence of Curie temperature very well. In (Ga, Mn)N, unoccupied d states are predicted at higher energy by LDA+U, resulting in higher Curie temperatures than in LDA at high concentrations due to the suppression of the anti-ferromagnetic super-exchange interaction.

  3. Curie-point pyrolysis of sodium salts of functionalized fatty acids

    NARCIS (Netherlands)

    Sinninghe Damsté, J.S.; Hartgers, W.A.; Leeuw, J.W. de

    1995-01-01

    Selected sodium salts of functionalized fatty acids were subjected to Curie-point pyrolysis and their pyrolysis products subsequently analyzed by gas chromatography/mass spectrometry in order to study the thermal dissociation mechanisms of lipid moieties in bio- and geomacromolecules. Pyrolysis of t

  4. Book Review: The Madame Curie Complex: The Hidden History of Women in Science

    DEFF Research Database (Denmark)

    Shield, Andrew DJ

    2012-01-01

    truth about nature. In The Madame Curie Complex: The Hidden History of Women in Science, Julie Des Jardins does not seek to discredit the work of Archimedes; rather, she demonstrates that the image of the superman-scientist saturated the public mindset from the late nineteenth century through the 1960s...

  5. Near-Curie magnetic anomaly at the Ni/C interface observed by Electron Holography

    DEFF Research Database (Denmark)

    Ferrari, Loris; Matteucci, Giorgio; Schofield, Marvin A

    2010-01-01

    We analyze with electron holography carried out in a transmission electron microscope the near-Curie behavior of magnetism at the edge of a Nickel thin film coated with Carbon. In-situ experiments with finely controlled variations of the sample temperature reveal an anomaly in the ferromagnetic t...

  6. On the dielectric curie-weiss law and diffuse phase transition in ferroelectrics

    NARCIS (Netherlands)

    Jonker, G.H.

    1983-01-01

    A simple derivation of parabolic 1/εr-T curves is obtained by reconsidering the origin of the dielectric Curie-Weiss law. The only assumption needed is the introduction of a non-linear temperature dependance of the macroscopic dielectric polarization in the macroscopic Clausius-Mossotti equation

  7. Difficulties in teaching electromagnetism: an eight year experience at Pierre and Marie Curie University

    Directory of Open Access Journals (Sweden)

    H. Roussel

    2012-07-01

    Full Text Available We will begin by outlining the details of how electromagnetics are taught in the  electrical engineering program offered at Pierre and Marie Curie University (a French example from the undergraduate to the Masters degree levels.  We will also discuss how our methods are and should be adapted to teach waves propagation without discouraging students.

  8. Marie Curie, les femmes et la science, d'hier à aujourd'hui

    CERN Document Server

    CERN. Geneva; Mariotti, Chiara; Vicinanza, Domenico

    2017-01-01

    Marie Curie, les femmes et la science, d'hier à aujourd'hui Conférence par Hélène Langevin-Joliot Avec la participation de l'Echo du Reculet de Thoiry. L'enregistrement et la liste d'attente sont déjà complets... Mais il n'est pas rare que des personnes réservent et ne viennent pas. Nous réassignerons les places libérées selon la règle "premier arrivé, premier inscrit". Au vu de la forte demande, la conférence sera également disponible en vidéoconférence : lien d'accès "webcast" disponible en bas de cette page. Hélène Langevin-Joliot, directrice de recherche émérite en physique nucléaire fondamentale au CNRS à Orsay, est aussi la fille de Frédéric et Irène Joliot-Curie (prix Nobel de chimie en 1935) et la petite-fille de Pierre Curie (prix Nobel de physique en 1903) et de Marie Curie (prix Nobel de physique en 1903 et prix Nobel de chimie en 1911). Hélène Langevin-Joliot nous parlera de sa vie scientifique, de l’histoire extraordinai...

  9. Ciencia e industria en el desarrollo de la radiactividad: el caso de Marie Curie

    Directory of Open Access Journals (Sweden)

    Roqué, Xavier

    1997-01-01

    Full Text Available Not available.Se argumenta que Marie Curie desarrolló sus investigaciones en radiactividad en estrecha relación con la industria de los radioelementos. Esta relación incluyó desde el desarrollo de procedimientos de extracción para diversas sustancias radiactivas, hasta la promoción de su propio laboratorio industrial. La actividad industrial de Curie se aviene mal con su imagen heroica de científica pura, sacrificada y carente de medios, imagen que, paradójicamente, se retrotrae a las campañas de Curie en los años 1920 por dotar a su laboratorio con «medios de acción industriales». Se verá que los valores dominantes del medio científico francés favorecieron la propagación selectiva de la imagen heroica de Curie, que fue luego aceptada acríticamente por la historiografía de la física del siglo XX.

  10. Going to School with Madame Curie and Mr. Einstein: Gender Roles in Children's Science Biographies

    Science.gov (United States)

    Owens, Trevor

    2009-01-01

    One of the first places children encounter science and scientists is children's literature. Children's books about science and scientists have, however, received limited scholarly attention. By exploring the history of children's biographies of Marie Curie and Albert Einstein, the two most written about scientist in children's literature, this…

  11. Living Proof: What Helen Keller, Marilyn Monroe, and Marie Curie Have in Common.

    Science.gov (United States)

    Saul, E. Wendy

    1986-01-01

    Examines biographies of Marie Curie written for children and discusses two types of distortions: simple misrepresentations of fact and selective retelling of the past. It is concluded that biographies of minority or female success should deal specifically with strategies used by the hero or heroine to combat prejudice. (EM)

  12. Marie Curie, les femmes et la science, d'hier à aujourd'hui - English

    CERN Document Server

    CERN. Geneva

    2017-01-01

    Marie Curie, les femmes et la science, d'hier à aujourd'hui Conférence par Hélène Langevin-Joliot Avec la participation de l'Echo du Reculet de Thoiry. L'enregistrement et la liste d'attente sont déjà complets... Mais il n'est pas rare que des personnes réservent et ne viennent pas. Nous réassignerons les places libérées selon la règle "premier arrivé, premier inscrit". Nous envisageons la possibilité de faire un webcast de la conférence. Plus d'information bientôt. Hélène Langevin-Joliot, directrice de recherche émérite en physique nucléaire fondamentale au CNRS à Orsay, est aussi la fille de Frédéric et Irène Joliot-Curie (prix Nobel de chimie en 1935) et la petite-fille de Pierre Curie (prix Nobel de physique en 1903) et de Marie Curie (prix Nobel de physique en 1903 et prix Nobel de chimie en 1911). Hélène Langevin-Joliot nous parlera de sa vie scientifique, de l’histoire extraordinaire de sa famille et en particulier du rôle des ...

  13. Living Proof: What Helen Keller, Marilyn Monroe, and Marie Curie Have in Common.

    Science.gov (United States)

    Saul, E. Wendy

    1986-01-01

    Examines biographies of Marie Curie written for children and discusses two types of distortions: simple misrepresentations of fact and selective retelling of the past. It is concluded that biographies of minority or female success should deal specifically with strategies used by the hero or heroine to combat prejudice. (EM)

  14. Attracting Talented Researchers to Ireland: A review of The European Marie Curie Programme

    OpenAIRE

    Giordani, Silvia

    2007-01-01

    PUBLISHED The purpose of this publication is to illustrate how researchers in academia and industry in Ireland have successfully secured funding from Europe in the Marie Curie Programme and to highlight the impact this has had in furthering their R&D ambitions.

  15. Variational description of Gibbs-non-Gibbs dynamical transitions for the Curie-Weiss model

    NARCIS (Netherlands)

    Fernandez, R.; den Hollander, F.; Martinez, J.

    2013-01-01

    We perform a detailed study of Gibbs-non-Gibbs transitions for the Curie- Weiss model subject to independent spin-flip dynamics (“infinite-temperature” dynamics). We show that, in this setup, the program outlined in van Enter et al. (Moscow Math J 10:687–711, 2010) can be fully completed, namely, Gi

  16. The Marie Curie programme at the Institute of Archaeology 2004-2008

    Directory of Open Access Journals (Sweden)

    Thilo Rehren

    2008-09-01

    Full Text Available The Marie Curie Early Stage Training (MEST projects, run by the European Commission, offer training opportunities to young scientists from EU member states and sometimes also from non-European countries. The Institute of Archaeology hosted one such project between 2004 and 2008, which is described here by its Principal Investigator.

  17. PARTNER: A Marie Curie Initial Training Network for hadron therapy (with english subtitles)

    CERN Multimedia

    CERN BULLETIN; Manuela Cirilli; Nathalie Hospital

    2011-01-01

    PARTNER is a 4-year Marie Curie Training project funded by the European Commission with 5.6 million Euros aimed at the creation of the next generation of experts. Ten academic institutes and research centres and two leading companies are participating in PARTNER, that is coordinated by CERN, forming a unique multidisciplinary and multinational European network.

  18. PARTNER: A Marie Curie Initial Training Network for hadron therapy (with french subtitles)

    CERN Document Server

    CERN BULLETIN; Manuela Cirilli; Nathalie Hospital

    2011-01-01

    PARTNER is a 4-year Marie Curie Training project funded by the European Commission with 5.6 million Euros aimed at the creation of the next generation of experts. Ten academic institutes and research centres and two leading companies are participating in PARTNER, that is coordinated by CERN, forming a unique multidisciplinary and multinational European network.

  19. Improving adherence to ante-retroviral treatment for people with harmful alcohol use in Kariobangi, Kenya through participatory research and action

    Directory of Open Access Journals (Sweden)

    Othieno Caleb J

    2012-08-01

    Full Text Available Abstract Background Harmful alcohol use has been linked to the spread of HIV in Kenya. It also adversely affects those on antiretroviral (ARV treatment through poor compliance. This study using participatory research and action (PRA methods sought to understand factors related to alcohol abuse and non-adherence and to formulate appropriate interventions in a sample of people living with HIV and AIDS (PLWHA who were also abusing alcohol, at Kariobangi in Nairobi, Kenya. Methods Entry into the community was gained through previous PRA work in that community and PLWHA were recruited through snowballing. Working together with the community members, the researchers explored the participants’ understanding of alcohol use problem, its effects on compliance to ARV treatment and discussed possible action areas through PRA techniques that included focus group and market place discussions; visual aids such as spider diagrams, community mapping and ranking. Follow-up meetings were held to discuss the progress. Results By the final meeting, 67 PLWHA and 19 community members had been recruited. Through discussions, misconceptions regarding alcohol use were identified. It emerged that alcohol abuse was poorly recognised among both the community and health workers. Screening for alcohol use was not routinely done and protocols for managing alcohol related disorders were not available at the local health centres providing ARVs. The study participants identified improving communication, psychoeducation and screening for alcohol use as possible action areas. Poverty was identified as a major problem but the interventions to mitigate this were not easy to implement. Conclusion We propose that PRA could be useful in improving communication between the health workers and the clients attending primary health care (PHC facilities and can be applied to strengthen involvement of support groups and community health workers in follow up and counselling. Integrating these

  20. Putting Action in Perspective

    Science.gov (United States)

    Lozano, Sandra C.; Hard, Bridgette Martin; Tversky, Barbara

    2007-01-01

    Embodied approaches to cognition propose that our own actions influence our understanding of the world. Do other people's actions also have this influence? The present studies show that perceiving another person's actions changes the way people think about objects in a scene. In Study 1, participants viewed a photograph and answered a question…

  1. Strengthening health disaster risk management in Africa: multi-sectoral and people-centred approaches are required in the post-Hyogo Framework of Action era.

    Science.gov (United States)

    Olu, Olushayo; Usman, Abdulmumini; Manga, Lucien; Anyangwe, Stella; Kalambay, Kalula; Nsenga, Ngoy; Woldetsadik, Solomon; Hampton, Craig; Nguessan, Francois; Benson, Angela

    2016-08-02

    . Health system-based, multi-sectoral, and people-centred approaches are proposed to accelerate implementation of the strategy in the post-Hyogo Framework of Action era.

  2. Anomalous curie response of impurities in quantum-critical spin-1/2 Heisenberg antiferromagnets.

    Science.gov (United States)

    Höglund, Kaj H; Sandvik, Anders W

    2007-07-13

    We consider a magnetic impurity in two different S=1/2 Heisenberg bilayer antiferromagnets at their respective critical interlayer couplings separating Néel and disordered ground states. We calculate the impurity susceptibility using a quantum Monte Carlo method. With intralayer couplings in only one of the layers (Kondo lattice), we observe an anomalous Curie constant C*, as predicted on the basis of field-theoretical work [S. Sachdev, Science 286, 2479 (1999)10.1126/science.286.5449.2479]. The value C* = 0.262 +/- 0.002 is larger than the normal Curie constant C=S(S+1)/3. Our low-temperature results for a symmetric bilayer are consistent with a universal C*.

  3. Radioisótopos e sociedade : o legado de Marie Curie 100 anos depois

    OpenAIRE

    André, João P.; Sá, Arsénio Vasconcelos

    2011-01-01

    No ano em que se comemora o centenário da atribuição do Prémio Nobel da Química a Marie Curie e o Ano Internacional da Química, é oportuno recordar e analisar a herança deixada à Humanidade por esta cientista excepcional. Trata-se de um legado que não só revolucionou a ciência como igualmente teve impactos profundos e incontornáveis na sociedade. A aplicação clínica dos radioisótopos, por ela e por Pierre Curie preconizada, constitui uma das armas mais poderosas para o combate ao cancro actua...

  4. Critical behavior of the resistivity of GaMnAs near the Curie temperature

    Science.gov (United States)

    Yuldashev, Sh. U.; Yunusov, Z. A.; Kwon, Y. H.; Lee, S. H.; Ahuja, R.; Kang, T. W.

    2017-09-01

    The effect of the magnetization fluctuations on the resistivity of GaMnAs near the Curie temperature TC was experimentally studied. It is shown that the determination of TC from the maximum of the temperature derivative of the resistivity is valid for the samples with a high concentration of free carries. Whereas, for the samples with low concentration of free carriers the TC coincides with the resistivity maximum. The magnetic specific heat for T>TC demonstrates the crossover from the one dimensional to the three dimensional critical behavior when the temperature become closer to the Curie temperature. This is explained by the formation of the ferromagnetic phase in the paramagnetic side of the phase transition which is started from Mn-Mn dimers oriented along one direction.

  5. Radioisótopos e sociedade : o legado de Marie Curie 100 anos depois

    OpenAIRE

    André, João P.; Sá, Arsénio Vasconcelos

    2011-01-01

    No ano em que se comemora o centenário da atribuição do Prémio Nobel da Química a Marie Curie e o Ano Internacional da Química, é oportuno recordar e analisar a herança deixada à Humanidade por esta cientista excepcional. Trata-se de um legado que não só revolucionou a ciência como igualmente teve impactos profundos e incontornáveis na sociedade. A aplicação clínica dos radioisótopos, por ela e por Pierre Curie preconizada, constitui uma das armas mais poderosas para o combate ao cancro actua...

  6. High Curie temperature BiInO3-PbTiO3 films.

    Science.gov (United States)

    Lee, Sun Young; Wang, Wei; Trolier-McKinstry, Susan

    2014-06-14

    High Curie temperaturepiezoelectricthin films of xBiInO3-(1-x)PbTiO3 (x = 0.10, 0.15, 0.20, and 0.25) were prepared by pulsed laser deposition. It was found that the tetragonality of films decreased with increasing BI content. The dielectric constant and transverse piezoelectric coefficient (e31,f ) exhibit the highest values of 665 and -13.6 C/m(2) at x = 0.20. Rayleigh analyses were performed to identify the extrinsic contributions to dielectric nonlinearity with different x. The composition with x = 0.20 also exhibits the largest extrinsic contributions to dielectric nonlinearity. The Curie temperature (TC ) is increased with increasing x content from 558 to 633 °C; TC at x = 0.20 is about 584 °C.

  7. The research school of Marie Curie in the Paris faculty, 1907-14.

    Science.gov (United States)

    Davis, J L

    1995-07-01

    As the most famous woman scientist of the twentieth century, there has been no shortage of books and articles on the life and career of Marie Curie (1867-1934). Her role as director of a laboratory-based research school in the new scientific field of radioactivity, a field which embraced both chemistry and physics, however, has never been examined. In recent years, there has been a growing interest in the question of research schools, and Morrell, Ravetz, Geison, and Klosterman, amongst others, have written on this subject. Using, in part, the methodology of Morrell, this paper investigates the role of Marie Curie as a school director in the Paris Faculty in the years 1907-14, examining the work and characteristics of her school and assessing her effectiveness as a director.

  8. Influence of inherent strain on the curie temperature of rare earth ion-doped bismuth vanadate

    OpenAIRE

    Sooryanarayana, K; Row, TNG; R. Somashekar; Varma, KBR

    1998-01-01

    X-ray line broadening is found to be an effective parameter to estimate the strain associated with rare earth ion (Gd3+)-doped polycrystalline bismuth vanadate(Bi2VO5.5). The strain increases with increasing Gd3+ concentration. It is anisotropic and found to be maximum in (111) plane. The Curie temperature which is known to decrease with increase in the rare earth ion concentration in these compounds is correlated with increase in strain.

  9. Investigations on electronic, Fermi surface, Curie temperature and optical properties of Zr2CoAl

    Science.gov (United States)

    Wei, Xiao-Ping; Sun, Weiwei; Zhang, Ya-Ling; Sun, Xiao-Wei; Song, Ting; Wang, Ting; Zhang, Jia-Liang; Su, Hao; Deng, Jian-Bo; Zhu, Xing-Feng

    2017-03-01

    Using full-potential local-orbital minimum-basis along with spin-polarized relativistic Korringa-Kohn-Rostoker methods, we study the electronic, Fermi surface, Curie temperature and optical properties of Zr2CoAl alloy. The alloy with Li2AgSb and Cu2MnAl structures are compared in terms of magnetic properties, and the electronic structures in two structures are also discussed. According to the calculated electronic states, it finds that the Zr2CoAl with Li2AgSb structure is half-metallic ferromagnet with an integral magnetic moment of 2.00μB , meanwhile we also notice the d-d and p-d hybridizations are responsible for the formation of minority-spin gap, furthermore, the fat-bands are applied to discuss the mixture between d and p electrons in the vicinity of the Fermi level. The Fermi surfaces related to the valence bands are constructed, and it is found that the spin-up valence bands 26, 27 and 28 across the Fermi energy dominate the nature of electrons. By mapping the system onto a Heisenberg Hamiltonian, we obtain the exchange coupling parameters, and observe that the Zr(A)-Co(C) and Zr(A)-Zr(B) interactions provide a major contribution for exchange interactions. Based on the calculated exchange coupling parameters, the Curie temperature is estimated to be 287.86 K at equilibrium, and also the dependence of Curie temperature on lattice constant related to the tunable Curie temperature in Zr2CoAl alloy is studied. Finally, we report the optical properties of Zr2CoAl alloy, and present the photon energy dependence of the absorption, the optical conductivity and the loss function.

  10. A new approach to increase the Curie temperature of Fe-Mo double perovskites

    Energy Technology Data Exchange (ETDEWEB)

    Rubi, D. [Institut de Ciencia de Materials de Barcelona, Campus UAB, E-08193, Bellaterra (Spain); Frontera, C. [Institut de Ciencia de Materials de Barcelona, Campus UAB, E-08193, Bellaterra (Spain); Roig, A. [Institut de Ciencia de Materials de Barcelona, Campus UAB, E-08193, Bellaterra (Spain); Nogues, J. [Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalunya (Spain); Institut Catala de Recerca i Estudis Avancats (ICREA), 08193 Bellaterra, Catalunya (Spain); Munoz, J.S. [Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalunya (Spain); Fontcuberta, J. [Institut de Ciencia de Materials de Barcelona, Campus UAB, E-08193, Bellaterra (Spain)]. E-mail: fontcuberta@icmab.es

    2006-01-25

    Sr{sub 2}FeMoO{sub 6} and related double perovskites are nowadays intensely investigated due to their potential in the field of spintronics. It has been previously shown that the Curie temperature (T {sub C}) of double perovskites can be increased by injecting carriers in the conduction band. We report here on an alternative approach to reinforce the magnetic interaction, and thus raise T {sub C}. It can be suspected that the introduction of Fe excess in the Fe-Mo sub-lattice, which would lead into the appearance of nearest neighbour Fe-O-Fe antiferromagnetic spin coupling, could reinforce the next-near neighbour Fe-O-Fe-O-Fe ferromagnetic ordering and thus raise the Curie temperature. The plausibility of this mechanism was checked, in the first place, by means of Monte Carlo simulations. Afterwards, Nd{sub 2x}Ca{sub 2-2x}Fe{sub 1+x}Mo{sub 1-x}O{sub 6} series was prepared and fully characterized, being found that the Curie temperature rises as much as {delta}T {sub C} {approx} 75 K when the Fe content is increased. We argue that this is a genuine magnetic exchange effect, not related neither to steric distortions nor band filling.

  11. Ising Critical Behavior of Inhomogeneous Curie-Weiss Models and Annealed Random Graphs

    Science.gov (United States)

    Dommers, Sander; Giardinà, Cristian; Giberti, Claudio; van der Hofstad, Remco; Prioriello, Maria Luisa

    2016-11-01

    We study the critical behavior for inhomogeneous versions of the Curie-Weiss model, where the coupling constant {J_{ij}(β)} for the edge {ij} on the complete graph is given by {J_{ij}(β)=β w_iw_j/( {sum_{kin[N]}w_k})}. We call the product form of these couplings the rank-1 inhomogeneous Curie-Weiss model. This model also arises [with inverse temperature {β} replaced by {sinh(β)} ] from the annealed Ising model on the generalized random graph. We assume that the vertex weights {(w_i)_{iin[N]}} are regular, in the sense that their empirical distribution converges and the second moment converges as well. We identify the critical temperatures and exponents for these models, as well as a non-classical limit theorem for the total spin at the critical point. These depend sensitively on the number of finite moments of the weight distribution. When the fourth moment of the weight distribution converges, then the critical behavior is the same as on the (homogeneous) Curie-Weiss model, so that the inhomogeneity is weak. When the fourth moment of the weights converges to infinity, and the weights satisfy an asymptotic power law with exponent {τ} with {τin(3,5)}, then the critical exponents depend sensitively on {τ}. In addition, at criticality, the total spin {S_N} satisfies that {S_N/N^{(τ-2)/(τ-1)}} converges in law to some limiting random variable whose distribution we explicitly characterize.

  12. The influence of stigma on first aid actions taken by young people for mental health problems in a close friend or family member: findings from an Australian national survey of youth.

    Science.gov (United States)

    Yap, Marie Bee Hui; Jorm, Anthony Francis

    2011-11-01

    Young people are an important source of first aid for mental health problems in people they are close to, but their first aid skills remain inadequate. Research into the factors that influence mental health first aid skills are required to reveal targets for improving these skills. This study examined the influence of stigma on first aid actions taken by young people to help someone close to them with a mental health problem. Participants in a national telephone survey of Australian youth (aged 12-25 years) reported on their stigmatising attitudes based on one of three disorders in vignettes: depression, depression with alcohol misuse, and social phobia. At a two-year follow-up interview, they were asked if they knew a family member or close friend with a problem similar to the vignette character since the initial interview, and those who did reported on the actions taken to help the person. Of the 1520 participants interviewed at follow up, 507 reported knowing someone with a similar problem. Young people's stigmatising attitudes (weak-not-sick, social distance and dangerousness/unpredictability) influenced their first aid actions. Social desirability could have affected the assessment of stigma, we could not assess the severity of the first aid recipient's problem or the benefit derived from the first aid provided, and the proportion of variance explained was modest. Reducing stigma may help to improve the first aid that people with mental health problems can receive from young people who are close to them. Copyright © 2011 Elsevier B.V. All rights reserved.

  13. MARIE CURIE

    Directory of Open Access Journals (Sweden)

    EDGAR SERNA MONTOYA

    2011-12-01

    Full Text Available María Sklodowska ‒Marie Curie‒ fue pionera en la ciencia de la radiactividad; es mejor conocida como la descubridora de los elementos radiactivos polonio y radio, y como el primer científico en ganar dos premios Nobel: Física y Química. Para sus colegas y el público en general, el radio fue la clave para un cambio fundamental en nuestra comprensión de la materia y la energía. Su trabajo no sólo influyó en el desarrollo de la ciencia fundamental, sino que también marcó el comienzo de una nueva era en la investigación y los tratamientos médicos.

  14. ESR study of thermal demagnetization processes in ferromagnetic nanoparticles with Curie temperatures between 40 and 60 deg. C

    Energy Technology Data Exchange (ETDEWEB)

    Kuznetsov, Oleg A. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation)]. E-mail: kuznetsov_oa@yahoo.com; Sorokina, Olga N. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation); Leontiev, Vladimir G. [Institute of Metallurgy, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Shlyakhtin, Oleg A. [Institute of Chemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation); Kovarski, Alexander L. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation); Kuznetsov, Anatoly A. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation)

    2007-04-15

    Thermal demagnetization in the vicinity of the Curie temperature of silver and sodium manganite nanoparticles, as well as copper-nickel and palladium-nickel alloy nanoparticles were studied by both static magnetic measurements and by electron spin resonance (ESR). ESR data indicate that some magnetic ordering remains even above the Curie temperature, determined by static magnetometry. Mechanisms of thermal demagnetization in alloy nanoparticles appear to be different from that in manganites.

  15. Structure and Curie temperature of Y2Fe17-xCrx

    Institute of Scientific and Technical Information of China (English)

    郝世强; 陈难先

    2003-01-01

    The structures of Y2Fe17-xCrx are simulated by the ab initio potentials. The site preference of Cr atom in Y2Fe17 is evaluated and the order is determined as 4f, 12j, which is close to the experimental result. Based on the site preference behavior, the calculated parameters and the atom sites of Y-Fe-Cr system are studied. The result corresponds well to observed data. Further, the DOS of the relaxed structures are calculated and the variation in Curie temperature is explained qualitatively by the spin-fluctuation theory.

  16. CoxC nanorod magnets: Highly magnetocrystalline anisotropy with lower Curie temperature for potential applications

    Energy Technology Data Exchange (ETDEWEB)

    El-Gendy, AA; Almugaiteeb, T; Carpenter, EE

    2013-12-01

    Magnetic CoxC nanorods with larger magnetocrystalline anisotropy of 5 x 10(5) J/m(3) as well as larger coercivity and lower Curie temperature are introduced. The particles have an average diameter of 8 nm and shows three different magnetic behaviors. The sample shows ferromagnetism up to 400 K, superparamagnetism at temperature > 400 K and

  17. First-principles calculation of the Curie temperature Slater-Pauling curve.

    Science.gov (United States)

    Takahashi, C; Ogura, M; Akai, H

    2007-09-12

    It is well known that the magnetizations as a function of the valence electron number per atom of 3d transition metal substitutional alloys form the so-called Slater-Pauling curve. Similarly, the Curie temperatures of these alloys also show systematic behaviour against the valence electron number. Though this fact has long been known, no attempt has been made so far to explain this behaviour from first principles. In this paper we calculate T(C) of 3d transition metal alloys in the framework of first-principles electronic structure calculation based on the local density approximation.

  18. Curie Temperature of the Intergranular Amorphous Phase in Nanocrystalline Fe89Zr7B4 Alloy

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    The FeZrB amorphous alloys for simulating the intergranular amorphous phase in the nanocrystalline Fe89Zr7B4 soft magnetic materials were obtained by mechanical alloying of a mixture of elemental Fe, Zr and B powdersfor 25 h. It is shown that the Curie temperature of the simulated intergranular phase alloy is much lower than thatof the intergranular phase with the same chemical composition in the nanocrystalline Fe89Zr7B4 alloy. The possiblemechanism is mainly due to the strong ferromagnetic exchange force among the nanocrystalline α-Fe grains.

  19. High Curie temperatures in (Ga,Mn)N from Mn clustering

    OpenAIRE

    Hynninen, Teemu; Raebiger, Hannes; Ayuela, Andres; von Boehm, J.

    2005-01-01

    The effect of microscopic Mn cluster distribution on the Curie temperature (Tc) is studied using density-functional calculations. We find that the calculated Tc depends crucially on the microscopic cluster distribution, which can explain the abnormally large variations in experimental Tc values from a few K to well above room temperature. The partially dimerized Mn_2-Mn_1 distribution is found to give the highest Tc > 500 K, and in general, the presence of the Mn_2 dimer has a tendency to enh...

  20. Local radiofrequency-induced hyperthermia using CuNi nanoparticles with therapeutically suitable Curie temperature

    Energy Technology Data Exchange (ETDEWEB)

    Kuznetsov, Anatoly A. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Leontiev, Vladimir G. [Institute of Metallurgy, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Brukvin, Vladimir A. [Institute of Metallurgy, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Vorozhtsov, Georgy N. [NIOPIK Organic Intermediates and Dyes Institute, Moscow 103787 (Russian Federation); Kogan, Boris Ya. [NIOPIK Organic Intermediates and Dyes Institute, Moscow 103787 (Russian Federation); Shlyakhtin, Oleg A. [Institute of Chemical Physics, Russian Academy of Sciences (RAS), Kosygin St. 4, Moscow 119991 (Russian Federation); Yunin, Alexander M. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Tsybin, Oleg I. [Institute of Metallurgy, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation); Kuznetsov, Oleg A. [Institute of Biochemical Physics, Russian Academy of Sciences (RAS), Moscow 119991 (Russian Federation)]. E-mail: kuznetsov_oa@yahoo.com

    2007-04-15

    Copper-nickel (CuNi) alloy nanoparticles with Curie temperatures (T{sub c}) from 40 to 60{sup o}C were synthesized by several techniques. Varying the synthesis parameters and post-treatment, as well as separations by size and T{sub c}, allow producing mediator nanoparticles for magnetic fluid hyperthermia with parametric feedback temperature control with desired parameters. In vitro and in vivo animal experiments have demonstrated the feasibility of the temperature-controlled heating of the tissue, laden with the particles, by an external alternating magnetic field.

  1. O legado de Madame Curie : uma abordagem CTS para o ensino da radioatividade

    OpenAIRE

    Jucelino Cortez

    2014-01-01

    Nesta dissertação relatamos uma experiência de ensino de Radioatividade motivada na abordagem Ciência, Tecnologia e Sociedade (CTS) e trabalhada com os estudantes do terceiro ano da Escola Estadual de Ensino Médio Ponche Verde, em Sertão, Rio Grande do Sul, em 2013. A vida e o legado de Marie Curie foram usados como mote central para uma introdução multidisciplinar ao conteúdo de Radioatividade, que envolveu Biologia, História, Química, Filosofia, Sociologia, Matemática, Medicina, além de Fís...

  2. Observation of Curie transition during spark plasma sintering of ferromagnetic materials

    Energy Technology Data Exchange (ETDEWEB)

    Kumar Mani, Mahesh [Wolfson Centre for Magnetics, Cardiff School of Engineering, Cardiff University (United Kingdom); Viola, Giuseppe [School of Engineering and Materials Science, Queen Mary University of London (United Kingdom); Nanoforce Technology Ltd., London (United Kingdom); Hall, Jeremy P. [Wolfson Centre for Magnetics, Cardiff School of Engineering, Cardiff University (United Kingdom); Grasso, Salvatore; Reece, Mike J. [School of Engineering and Materials Science, Queen Mary University of London (United Kingdom); Nanoforce Technology Ltd., London (United Kingdom)

    2015-05-15

    The possibility of employing the ferromagnetic–paramagnetic phase transitions of magnetic materials to calibrate temperature during spark plasma sintering (SPS) was investigated using pure Fe and Fe–50Co alloy. A sharp and repeatable change was observed in the electrical current profile at the Curie temperature (T{sub c}) during both sintering and reheating of the sintered samples. Under a pulsed DC current, an abrupt change in the electrical resistance was observed at T{sub c} due to the sudden changes in the permeability and in turn, the skin depth during heating and cooling. These effects can be used to obtain a more accurate in-situ measurement of the sample temperature than the one provided by the pyrometers that are normally used for SPS processing. The temperature measured using a pyrometer was found to be significantly lower (up to 70 °C) than the actual temperature of the specimen. - Highlights: • Calibration of temperature during spark plasma sintering (SPS) remains a big challenge. • Temperature measured by non-contact pyrometers in SPS is not accurate. • Ferromagnetic materials exhibit abrupt change in permeability at Curie temperature (T{sub c}). • Iron and Fe–Co alloy showed sharp and reproducible changes in SPS electric current profiles at T{sub c}. • Ferromagnetic materials can be successfully used to calibrate pyrometers in SPS.

  3. Magnetic properties of N-doped graphene with high Curie temperature

    Science.gov (United States)

    Miao, Qinghua; Wang, Lidong; Liu, Zhaoyuan; Wei, Bing; Xu, Fubiao; Fei, Weidong

    2016-01-01

    N-doped graphene with Curie temperature higher than room temperature is a good candidate for nanomagnetic applications. Here we report a kind of N-doped graphene that exhibits ferromagnetic property with high Curie temperature (>600 K). Four graphene samples were prepared through self-propagating high-temperature synthesis (SHS), and the doped nitrogen contents of in the samples were 0 at.%, 2.53 at.%, 9.21 at.% and 11.17 at.%. It has been found that the saturation magnetization and coercive field increase with the increasing of nitrogen contents in the samples. For the sample with the highest nitrogen content, the saturation magnetizations reach 0.282 emu/g at 10 K and 0.148 emu/g at 300 K; the coercive forces reach 544.2 Oe at 10 K and 168.8 Oe at 300 K. The drop of magnetic susceptibility at ~625 K for N-doped graphene is mainly caused by the decomposition of pyrrolic N and pydinic N. Our results suggest that SHS method is an effective and high-throughput method to produce N-doped graphene with high nitrogen concentration and that N-doped graphene produced by SHS method is promising to be a good candidate for nanomagnetic applications. PMID:26907569

  4. Synthesis and characterization of Ni–Cu alloy nanoparticles with a tunable Curie temperature

    Energy Technology Data Exchange (ETDEWEB)

    Ferk, Gregor [Faculty of Chemistry and Chemical Engineering, University of Maribor (Slovenia); Stergar, Janja [Faculty of Medicine, University of Maribor (Slovenia); Makovec, Darko [Department for Materials Synthesis, Jožef Stefan Institute, Ljubljana (Slovenia); Hamler, Anton [Faculty of Electrical Engineering and Computer Science, University of Maribor (Slovenia); Jagličić, Zvonko [Institute of Mathematics, Physics and Mechanics and Faculty of Civil and Geodetic Engineering, University of Ljubljana (Slovenia); Drofenik, Miha [Faculty of Chemistry and Chemical Engineering, University of Maribor (Slovenia); Department for Materials Synthesis, Jožef Stefan Institute, Ljubljana (Slovenia); Ban, Irena [Faculty of Chemistry and Chemical Engineering, University of Maribor (Slovenia); Center of Excellence NAMASTE, Ljubljana (Slovenia)

    2015-11-05

    A series of nickel–copper alloy magnetic nanoparticles with a range of Curie points from 51 °C to 63 °C were prepared by the reduction of intimately mixed nickel and copper oxides in a silica matrix using the sol–gel method. The silica matrix was subsequently removed with an etching solution, assisted by sonication. The alloy nanoparticles were characterized using X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA/SDTA), thermomagnetic analysis (TMA), transmission electron microscopy (TEM), magnetic measurements (SQUID, vibrating-sample magnetometer) and specific absorption rate measurements (SAR). The synthesized nanoparticles show a size in the range 15–20 nm, exhibited superparamagnetic behavior with a blocking temperature (T{sub B}) of approximately 135 K and a room-temperature magnetization of 3–9 emu/g, depending on the composition. The nanoparticles showed a relatively high effective anisotropy constant (K{sub eff}) and a significant heating ability in an alternating magnetic field. The synthesis method is straightforward and allows the preparation of homogeneous Ni–Cu alloy nanoparticles with a relatively narrow particle size distribution. - Highlights: • Straightforward so-gel synthesis of homogeneous Ni–Cu alloy nanoparticles. • Narrow particle size distribution and controlled Curie point. • Applications in “self-regulating magnetic fluid hyperthermia”. • Heating efficiency of nanoparticles as a function of composition and size.

  5. Magnetic Signatures and Curie Surface Trend Across an Arc-Continent Collision Zone: An Example from Central Philippines

    Science.gov (United States)

    Manalo, Pearlyn C.; Dimalanta, Carla B.; Ramos, Noelynna T.; Faustino-Eslava, Decibel V.; Queaño, Karlo L.; Yumul, Graciano P.

    2016-05-01

    Ground and aeromagnetic data are combined to characterize the onshore and offshore magnetic properties of the central Philippines, whose tectonic setting is complicated by opposing subduction zones, large-scale strike-slip faulting and arc-continent collision. The striking difference between the magnetic signatures of the islands with established continental affinity and those of the islands belonging to the island arc terrane is observed. Negative magnetic anomalies are registered over the continental terrane, while positive magnetic anomalies are observed over the Philippine Mobile Belt. Several linear features in the magnetic anomaly map coincide with the trace of the Philippine Fault and its splays. Power spectral analysis of the magnetic data reveals that the Curie depth across the central Philippines varies. The deepest point of the magnetic crust is beneath Mindoro Island at 32 km. The Curie surface shallows toward the east: the Curie surface is 21 km deep between the islands of Sibuyan and Masbate, and 18 km deep at the junction of Buruanga Peninsula and Panay Island. The shallowest Curie surface (18 km) coincides with the boundary of the arc-continent collision, signifying the obduction of mantle rocks over the continental basement. Comparison of the calculated Curie depth with recent crustal thickness models reveals the same eastwards thinning trend and range of depths. The coincidence of the magnetic boundary and the density boundary may support the existence of a compositional boundary that reflects the crust-mantle interface.

  6. A Time for Action on Health Inequities: Foundations of the 2014 Geneva Declaration on Person- and People-centered Integrated Health Care for All

    Science.gov (United States)

    Cloninger, C. Robert; Salvador-Carulla, Luis; Kirmayer, Laurence J.; Schwartz, Michael A.; Appleyard, James; Goodwin, Nick; Groves, JoAnna; Hermans, Marc H. M.; Mezzich, Juan E.; van Staden, C. W.; Rawaf, Salman

    2015-01-01

    Global inequalities contribute to marked disparities in health and wellness of human populations. Many opportunities now exist to provide health care to all people in a person- and people-centered way that is effective, equitable, and sustainable. We review these opportunities and the scientific, historical, and philosophical considerations that form the basis for the International College of Person-centered Medicine’s 2014 Geneva Declaration on Person- and People-centered Integrated Health Care for All. Using consistent time-series data, we critically examine examples of universal healthcare systems in Chile, Spain, and Cuba. In a person-centered approach to public health, people are recognized to have intrinsic dignity and are treated with respect to encourage their developing health and happiness. A person-centered approach supports the freedom and the responsibility to develop one’s life in ways that are personally meaningful and that are respectful of others and the environment in which we live together. Evidence suggests that health care organizations function well when they operate in a person-and people-centered way because that stimulates better coordination, cooperation, and social trust. Health care coverage must be integrated at several interconnected levels in order to be effective, efficient, and fair. To reduce the burden of disease, integration is needed between the people seeking and delivering care, within the social network of each person, across the trajectory of each person’s life, among primary caregivers and specialists, and across multiple sectors of society. For integration to succeed across all these levels, it must foster common values and a shared vision of the future. PMID:26140190

  7. Return after flight : exploring the decision making process of Sudanese war-displaced people by employing an extended version of the theory of reasoned action

    NARCIS (Netherlands)

    Uffelen, van J.G.

    2006-01-01

    Research Issues and Approach Forced displacement and the response of the international community is one of the most pressing challenges of contemporary times. Whether in dealing with refugees or internally displaced people the international system has been struggling to prevent

  8. Mass Bay Employment Services (A Service of Bay Cove Human Services, Inc.): A Story of Leadership, Vision, and Action Resulting in Employment for People with Mental Illness.

    Science.gov (United States)

    Gold, Martine; Marrone, Joe

    1998-01-01

    This organizational vignette is the first in a multi-part series highlighting community service providers. This particular issue focuses on Mass Bay Employment Services (MBES) located in Boston, Massachusetts, that works with people with serious mental illness and has moved from a non-employment oriented day program to one that has employment as…

  9. Return after flight : exploring the decision making process of Sudanese war-displaced people by employing an extended version of the theory of reasoned action

    NARCIS (Netherlands)

    Uffelen, van J.G.

    2006-01-01

    Research Issues and Approach Forced displacement and the response of the international community is one of the most pressing challenges of contemporary times. Whether in dealing with refugees or internally displaced people the international system has been struggling to prevent for

  10. Return after flight : exploring the decision making process of Sudanese war-displaced people by employing an extended version of the theory of reasoned action

    NARCIS (Netherlands)

    Uffelen, van J.G.

    2006-01-01

    Research Issues and Approach Forced displacement and the response of the international community is one of the most pressing challenges of contemporary times. Whether in dealing with refugees or internally displaced people the international system has been struggling to prevent for

  11. Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window

    KAUST Repository

    Liu, E. K.

    2013-03-28

    An effective scheme of isostructural alloying was applied to establish a Curie-temperature window in isostructural MnNiGe-CoNiGe system. With the simultaneous accomplishment of decreasing structural-transition temperature and converting antiferromagnetic martensite to ferromagnetic state, a 200 K Curie-temperature window was established between Curie temperatures of austenite and martensite phases. In the window, a first-order magnetostructural transition between paramagnetic austenite and ferromagnetic martensite occurs with a sharp jump in magnetization, showing a magnetic entropy change as large as −40 J kg−1 K−1 in a 50 kOe field change. This giant magnetocaloric effect enables Mn1− x Co x NiGe to become a potential magnetic refrigerant.

  12. Impact of curie-therapy timing in the treatment of cervical cancer; Impact du timing de la curietherapie dans le traitement du cancer du col uterin

    Energy Technology Data Exchange (ETDEWEB)

    Kochbati, L.; Bouzid, N.; Saidi, I.; Nasr, C.; Messai, T.; Hentati, D.; Gargouri, W.; Besbes, M.; Maalej, M. [Service de radiotherapie, institut Salah-Azaiz, Tunis (Tunisia)

    2011-10-15

    Curie-therapy conventionally comes before surgery in the treatment of cervical cancer, either alone or after a concomitant chemotherapy. The authors report a study of the impact of a reverse sequence (surgery before curie-therapy) on the exeresis quality and on the evolution of operable tumours. Among women treated between 2004 and 2009, 40 have been identified who had surgery before curie-therapy. Ages, tumour stages, average doses, and treatment procedures are discussed. The notably high rate of vaginal sections could be reduced or avoided by using the conventional protocol (curie-therapy before surgery). Short communication

  13. Influence of Non—Magnetic Substitutional Atoms on Spontaneous Moment and Curie Temperature of Ce2Co17Compounds

    Institute of Scientific and Technical Information of China (English)

    胡社军; 刘正义; 等

    2002-01-01

    The structure and magnetic properties of Ce2Co17-xMx(M=Ga,Al and Si)compounds for Mcomcentrations up to x=5 were studied by means of X-ray diffraction and magnetic measurements,The experimental results show that the Curie temperatures and Co spontaneous magnetization decrease significantly with increasing the addition of non-magnetic substitutional atoms,and that Si which has a minimum solid solubility ic Ce2Co17causes a largest reduction of Curie temperature,spontaneous magnetization and moment perCo atom compared with Ga and Al.

  14. Influence of Non-Magnetic Substitutional Atoms on Spontaneous Moment and Curie Temperature of Ce2Co17 Compounds

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The structure and magnetic properties of Ce2Co17-xMx(M=Ga,Al and Si) compounds for M concentrations up to x=5 were studied by means of X-ray diffraction and magnetic measurements. The experimental results show that the Curie temperatures and Co spontaneous magnetization decrease significantly with increasing the addition of non-magnetic substitutional atoms, and that Si which has a minimum solid solubility in Ce2Co17 causes a largest reduction of Curie temperature, spontaneous magnetization and moment per Co atom compared with Ga and Al.

  15. In-Situ Alignment of MnBi Crystals Induced by High Magnetic Field above Curie Temperature

    Institute of Scientific and Technical Information of China (English)

    LIU Yong-Sheng; ZHANG Jin-Cang; REN Zhong-Ming; CAO Shi-Xun

    2007-01-01

    @@ Above Curie temperature, MnBi crystals are aligned in situ along the c-axis in a Bi matrix by a high fabrication magnetic field Hf of 10 T. Magnetic testing shows a pronounced anisotropy in magnetization in directions normal and parallel to the fabrication field, resulting from the alignment. The successful alignment may result from the fact that the easy magnetization direction is along the c-axis of MnBi and the high fabrication field of 10 T is large enough to rotate the MnBi crystal to this direction even though the temperature is above the Curie temperature.

  16. High Curie temperature of Ce-Fe-Si compounds with ThMn12 structure

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, C; Pinkerton, FE; Herbst, JF

    2015-01-15

    We report the discovery of ternary CeFe(12-x)Si(x)compounds possessing the ThMn12 structure. The samples were prepared by melt spinning followed by annealing. In contrast to other known Ce Fe-based binary and ternary compounds, CeFe12-xSix compounds exhibit exceptionally high Curie temperatures whose values increase with added Si substitution. The highest T. = 583 K in CeFe10Si2 rivals that of the well-established Nd2Fe14B compound. We ascribe the T-c behavior to a combination of Si-induced 3d band structure changes and partial Ce3+ stabilization. (C) 2014 Published by Elsevier Ltd.

  17. High Curie temperature Mn5Ge3 thin films produced by non-diffusive reaction

    Science.gov (United States)

    Assaf, E.; Portavoce, A.; Hoummada, K.; Bertoglio, M.; Bertaina, S.

    2017-02-01

    Polycrystalline Mn5Ge3 thin films were produced on SiO2 using magnetron sputtering and reactive diffusion (RD) or non-diffusive reaction (NDR). In situ X-ray diffraction and atomic force microscopy were used to determine the layer structures, and magnetic force microscopy, superconducting quantum interference device, and ferromagnetic resonance were used to determine their magnetic properties. RD-mediated layers exhibit similar magnetic properties as molecular beam epitaxy-grown monocrystalline Mn5Ge3 thin films, while NDR-mediated layers show magnetic properties similar to monocrystalline C-doped Mn5Ge3Cx thin films with 0.1 ≤ x ≤ 0.2. NDR appears as a complementary metal oxide semi-conductor-compatible efficient method to produce good magnetic quality high-Curie temperature Mn5Ge3 thin films.

  18. Nd-doped ZnO monolayer: High Curie temperature and large magnetic moment

    Science.gov (United States)

    Tan, Changlong; Sun, Dan; Zhou, Long; Tian, Xiaohua; Huang, Yuewu

    2016-10-01

    We performed first-principles calculations within density-functional theory to study the structural, electronic, and magnetic properties of Nd-doped ZnO monolayer. The calculated results reveal that Nd-doped ZnO monolayer exhibits stable room temperature ferromagnetism with a large saturation magnetic moment of 3.99 μB per unit in ZnO monolayer. The magnetic property is contributed to the localized f sates of Nd atoms. When two Zn atoms are substituted by two Nd dopants, they tend to form ferromagnetic (FM) coupling and the estimated Curie temperature is higher than room temperature. More interesting, the impurity bands appear within the band gap of ZnO monolayer due to the introduction of Nd dopant. Our results may provide a reference for modifying the material property of ZnO monolayer and are promising as nanoscale building block in spintronic devices.

  19. [Maria Skłodowska-Curie--her chemistry at the centenary of the second Nobel Prize].

    Science.gov (United States)

    Zagórski, Zbigniew Paweł; Kornacka, Ewa Maria

    2012-01-01

    The article presents from the perspective of one hundred years the work of Maria Curie-Skłodowska, which in many cases was ahead of the state of knowledge of the time. It opened new horizons and for this reason we made many digressions. The fact of awarding her the Nobel Prize twice is a sensation enough to present the values of careful activity of the Nobel Prize Committee that emphasizes the importance of Maria's achievements. A significant element of Maria Skłodowska-Curie's achievements was still mysterious character of the radiation in her time, and only chemical approach made it possible to organise the phenomena and explain the origin of the radiation. The essence of the research was an arduous separation of components following the track of growing radiation of successive fractions of preparations. This research was a start of the technology of educement of dispersed elements in great mass of materials. We underline the paramount role of the chemical research Maria Skłodowska conducted while still in Warsaw in the laboratories of the Museum of Industry and Agriculture under the guidance of an excellent chemist Józef Jerzy Boguski. Her research in Paris was the origin of the semi-commercial scale in chemistry and setting aside a special shed outside the university building was the beginning of the institutes that now function beyond universities and are key element of scientific and technical progress. Technology of splitting developed by Maria Skłodowska-Curie was applied also by other radiochemists, e.g. By Otto Hahn. Lively movement in radiochemistry of her lifetime resulted in Maria's disputes with e.g. German chemist Marckwald, who questioned the originality of polonium. The scientific disputes like this one Maria won triumphantly although in several others she had to accept opponents' argument, as in the case of radon. Her experiments were planned with utmost rationality as it was with the rejection of the hypothesis saying that radioactivity was

  20. Standards of radium-226: from Marie Curie to the International Committee for Radionuclide Metrology.

    Science.gov (United States)

    Coursey, B M; Collé, R; Coursey, J S

    2002-01-01

    In the early part of the 20th century, the pioneers of radioactivity research, led by Marie Curie, Ernest Rutherford and Stefan Meyer, formed a Commission internationale des étalons de radium. The Commission made arrangements for the preparation and intercomparisons of the international standards of radium, which were identified as the Paris standard and the Vienna standard. Otto Hönigschmid from Vienna prepared a first set of international secondary standards in 1912 and a second set in 1934. In both instances, these secondary standards were compared by gamma-ray measurements with the Paris and Vienna standards. The usage of these international standards of radium in the 20th century is described.

  1. Determination of the Thermal Decomposition Products of Terephthalic Acid by Using Curie-Point Pyrolyzer

    Science.gov (United States)

    Begüm Elmas Kimyonok, A.; Ulutürk, Mehmet

    2016-04-01

    The thermal decomposition behavior of terephthalic acid (TA) was investigated by thermogravimetry/differential thermal analysis (TG/DTA) and Curie-point pyrolysis. TG/DTA analysis showed that TA is sublimed at 276°C prior to decomposition. Pyrolysis studies were carried out at various temperatures ranging from 160 to 764°C. Decomposition products were analyzed and their structures were determined by gas chromatography-mass spectrometry (GC-MS). A total of 11 degradation products were identified at 764°C, whereas no peak was observed below 445°C. Benzene, benzoic acid, and 1,1‧-biphenyl were identified as the major decomposition products, and other degradation products such as toluene, benzophenone, diphenylmethane, styrene, benzaldehyde, phenol, 9H-fluorene, and 9-phenyl 9H-fluorene were also detected. A pyrolysis mechanism was proposed based on the findings.

  2. Mapping Curie temperature depth in the western United States with a fractal model for crustal magnetization

    Science.gov (United States)

    Bouligand, C.; Glen, J.M.G.; Blakely, R.J.

    2009-01-01

    We have revisited the problem of mapping depth to the Curie temperature isotherm from magnetic anomalies in an attempt to provide a measure of crustal temperatures in the western United States. Such methods are based on the estimation of the depth to the bottom of magnetic sources, which is assumed to correspond to the temperature at which rocks lose their spontaneous magnetization. In this study, we test and apply a method based on the spectral analysis of magnetic anomalies. Early spectral analysis methods assumed that crustal magnetization is a completely uncorrelated function of position. Our method incorporates a more realistic representation where magnetization has a fractal distribution defined by three independent parameters: the depths to the top and bottom of magnetic sources and a fractal parameter related to the geology. The predictions of this model are compatible with radial power spectra obtained from aeromagnetic data in the western United States. Model parameters are mapped by estimating their value within a sliding window swept over the study area. The method works well on synthetic data sets when one of the three parameters is specified in advance. The application of this method to western United States magnetic compilations, assuming a constant fractal parameter, allowed us to detect robust long-wavelength variations in the depth to the bottom of magnetic sources. Depending on the geologic and geophysical context, these features may result from variations in depth to the Curie temperature isotherm, depth to the mantle, depth to the base of volcanic rocks, or geologic settings that affect the value of the fractal parameter. Depth to the bottom of magnetic sources shows several features correlated with prominent heat flow anomalies. It also shows some features absent in the map of heat flow. Independent geophysical and geologic data sets are examined to determine their origin, thereby providing new insights on the thermal and geologic crustal

  3. Curie temperature and magnetic properties of aluminum doped barium ferrite particles prepared by ball mill method

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Daming [Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy, Colorado Springs, Colorado 80918 (United States); College of Materials and Chemical Engineering, Hainan University, Haikou 570228, Hainan (China); Harward, Ian; Baptist, Joshua; Goldman, Sara; Celinski, Zbigniew [Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy, Colorado Springs, Colorado 80918 (United States)

    2015-12-01

    Barium ferrite has attracted considerable interest in the fields of permanent magnets and perpendicular magnetic recording due to its strong uniaxial anisotropy and high Curie temperature (T{sub c}). We prepared aluminum doped barium ferrite ceramics (BaAl{sub x}Fe{sub 12−x}O{sub 19}, 0≤x≤6) by the ball mill method. The powder was milled for 96 h, and after forming pellets, annealed for 48 h in air at 1000 °C. The X-ray diffraction (XRD) data show that there are only single hexagonal phases in the samples without any impurity phase. The crystal lattice constants, a and c, were calculated by Cohen's method. Both a and c decrease with increasing x, ranging from 0.588 nm and 2.318 nm to 0.573 nm and 2.294 nm, respectively. A Vibrating Sample Magnetometer (VSM) and Superconducting Quantum Interference Device (SQUID) were used to investigate T{sub c} and magnetic properties of BaFe{sub 12−x}Al{sub x}O{sub 19}. It is found that T{sub c} decreases with increasing x, from 425 °C to 298 °C. It is also found that the saturated magnetization (4πM{sub s}) decreases with increasing x, while the coercivity (H{sub c}) increases with the increase in x. The anisotropy field was also determined from the SQUID measurement. - Highlights: • The Curie temperature and magnetic properties of aluminum doped barium ferrite particles were studied systemically. • The relation between 4πM{sub s} and composition x at 50 K (both experimental value and theoretical calculation) was revealed. • Occupation number for spin up and spin down as a function of temperature was shown. • The relation between 4πM{sub s} and composition x from 50 K to room temperature was revealed.

  4. Band filling dependence of the Curie temperature in CrO2

    Science.gov (United States)

    Solovyev, I. V.; Kashin, I. V.; Mazurenko, V. V.

    2016-06-01

    Rutile CrO2 is an important half-metallic ferromagnetic material, which is also widely used in magnetic recording. In an attempt to find the conditions, which lead to the increase of the Curie temperature (T C), we study theoretically the band-filling dependence of interatomic exchange interactions in the rutile compounds. For these purposes, we use the effective low-energy model for the magnetic t 2g bands, derived from the first-principles electronic structure calculations in the Wannier basis, which is solved by means of dynamical mean-field theory. After the solution, we calculate the interatomic exchange interactions, by using the theory of infinitesimal spin rotations, and evaluate T C. We argue that, as far as the Curie temperature is concerned, the band filling realized in CrO2 is far from being the optimal one and much higher T C can be obtained by decreasing the number of t 2g electrons (n) via the hole doping. We find that the optimal n is close to 1, which should correspond to the case of VO2, provided that it is crystallized in the rutile structure. This finding was confirmed by using the experimental rutile structure for both CrO2 and VO2 and reflects the general tendency towards ferromagnetism for the narrow-band compounds at the beginning of the band filling. In particular, our results suggest that the strong ferromagnetism can be achieved in the thin films of VO2, whose crystal structure is controlled by the substrate.

  5. Continuous-Flow Inlet Systems for Low Pressure Curie-Point Pyrolysis. Introduction of Pulse-Pyrolysis

    DEFF Research Database (Denmark)

    Egsgaard, Helge; Carlsen, Lars

    1984-01-01

    With emphasis on a constant reactant flow, a series of inlet systems for gas-phase Curie-point pyrolysis—mass spectrometry experiments have been studied. Inlet systems for the handling of gaseous, liquid and oligomeric (solid) samples have been designed and their performances evaluated. The princ....... The principle of pulse-pyrolysis is introduced and its applicability to kinetic studies outlined....

  6. Spin-flip dynamics of the Curie-Weiss model : Loss of Gibbsianness with possibly broken symmetry

    NARCIS (Netherlands)

    Kulske, Christof; Le Ny, Arnaud

    2007-01-01

    We study the conditional probabilities of the Curie-Weiss Ising model in vanishing external field under a symmetric independent stochastic spin-flip dynamics and discuss their set of points of discontinuity (bad points). We exhibit a complete analysis of the transition between Gibbsian and non-Gibbs

  7. Mechanisms of action in mindfulness-based cognitive therapy (MBCT) and mindfulness-based stress reduction (MBSR) in people with physical and/or psychological conditions: A systematic review.

    Science.gov (United States)

    Alsubaie, Modi; Abbott, Rebecca; Dunn, Barnaby; Dickens, Chris; Keil, Tina Frieda; Henley, William; Kuyken, Willem

    2017-07-01

    Recently, there has been an increased interest in studying the effects of mindfulness-based interventions for people with psychological and physical problems. However, the mechanisms of action in these interventions that lead to beneficial physical and psychological outcomes have yet to be clearly identified. The aim of this paper is to review, systematically, the evidence to date on the mechanisms of action in mindfulness interventions in populations with physical and/or psychological conditions. Searches of seven databases (PsycINFO, Medline (Ovid), Cochrane Central Register of Controlled Trials, EMBASE, CINAHL, AMED, ClinicalTrials.gov) were undertaken in June 2014 and July 2015. We evaluated to what extent the studies we identified met the criteria suggested by Kazdin for establishing mechanisms of action within a psychological treatment (2007, 2009). We identified four trials examining mechanisms of mindfulness interventions in those with comorbid psychological and physical health problems and 14 in those with psychological conditions. These studies examined a diverse range of potential mechanisms, including mindfulness and rumination. Of these candidate mechanisms, the most consistent finding was that greater self-reported change in mindfulness mediated superior clinical outcomes. However, very few studies fully met the Kazdin criteria for examining treatment mechanisms. There was evidence that global changes in mindfulness are linked to better outcomes. This evidence pertained more to interventions targeting psychological rather than physical health conditions. While there is promising evidence that MBCT/MBSR intervention effects are mediated by hypothesised mechanisms, there is a lack of methodological rigour in the field of testing mechanisms of action for both MBCT and MBSR, which precludes definitive conclusions. Copyright © 2017 Elsevier Ltd. All rights reserved.

  8. High-Curie-temperature ferromagnetism in self-organized Ge1-xMnx nanocolumns.

    Science.gov (United States)

    Jamet, Matthieu; Barski, André; Devillers, Thibaut; Poydenot, Valier; Dujardin, Romain; Bayle-Guillemaud, Pascale; Rothman, Johan; Bellet-Amalric, Edith; Marty, Alain; Cibert, Joël; Mattana, Richard; Tatarenko, Serge

    2006-08-01

    The emerging field of spintronics would be dramatically boosted if room-temperature ferromagnetism could be added to semiconductor nanostructures that are compatible with silicon technology. Here, we report a high-TC (>400K) ferromagnetic phase of (Ge,Mn) epitaxial layer. The manganese content is 6%, and careful structural and chemical analyses show that the Mn distribution is strongly inhomogeneous: we observe eutectoid growth of well-defined Mn-rich nanocolumns surrounded by a Mn-poor matrix. The average diameter of these nanocolumns is 3nm and their spacing is 10nm. Their composition is close to Ge(2)Mn, which corresponds to an unknown germanium-rich phase, and they have a uniaxially elongated diamond structure. Their Curie temperature is higher than 400K. Magnetotransport reveals a pronounced anomalous Hall effect up to room temperature. A giant positive magnetoresistance is measured from 7,000% at 30K to 200% at 300K and 9T, with no evidence of saturation.

  9. Curie isotherm map of Scotia Arc from near surface magnetic anomaly data

    Science.gov (United States)

    Catalán, Manuel

    2016-04-01

    The opening of the Drake Passage, situated between South America and Antarctica, represents the final stage of the fragmentation of Gondwana supercontinent. It led to the Scotia Arc formation, bordering the Scotia Sea, which is surrounded by fragments of the former continental connection. It is currently composed of Scotia and Sandwich Plates. Shackleton Fracture Zone constitutes its sinistral transpressive western boundary and it is a key structure that accommodates former Phoenix and Scotia Plates' differential movement. The formation of the Drake Passage and the Scotia Sea is considered of great importance to ocean circulation, as it allows the establishment of the Antarctic Circumpolar Current that isolated the Antarctic continent, with strong implications for climate and global changes. Thermal structure of the Earth's crust is one of the main parameters controlling geodynamic processes. There is few information regarding heat flow values on Scotia arc. These values are mainly located in its westernmost, southern and easternmost part, which are not enough to extract conclusions regarding lithospheric thickness variations and asthenospheric flow. Taking advantage of the World Digital Magnetic Anomaly Map Project's compilation we have extracted magnetic anomaly data which fall inside the Scotia Arc and surrounding areas. This magnetic anomaly picture provides the best representation of magnetic properties to date. We propose to use spectral methods on this regional magnetic compilation to obtain depth to the bottom of magnetic sources as a proxy to infer Curie depth and heat flow distribution in the Scotia Sea.

  10. [Analytical chemistry in works of Maria Skłodowska-Curie].

    Science.gov (United States)

    Hulanicki, Adam

    2012-01-01

    Maria Skłodowska-Curie--a Nobel Prize winner in chemistry--the elements of learning of chemistry gained just by a dint of work of more than ten months in Warsaw in the Institute of Industry and Agriculture Museum. The Nobel Prize concerned a contribution to the progress of chemistry through the discovery of radium and polonium, separation of radium and study of properties of this amazing element. It was awarded for an extremely arduous work, during which the chemical reactions being the principles of analytical chemistry were realized. Unlike to a typical analytical procedure, an initial attempt here was the thousands of kilograms of uranium ore: pitchblende. The final effect was small amounts of new elements: polonium and radium. Both the knowledge and the intuition of the researcher let her have a triumph. The difficulties she experienced because the properties of the searched chemical elements could only be evaluated thanks to the knowledge on other chemical elements. A significant achievement was the determination of the samples by means of radioactivity measurement, which gave rise to radiochemical analytical methods. An extreme analytical precision was demanded in multiple processes of fractional crystallization and precipitation which finally led to the calculation of the atomic mass of radium.

  11. Curie temperature and magnetic properties of aluminum doped barium ferrite particles prepared by ball mill method

    Science.gov (United States)

    Chen, Daming; Harward, Ian; Baptist, Joshua; Goldman, Sara; Celinski, Zbigniew

    2015-12-01

    Barium ferrite has attracted considerable interest in the fields of permanent magnets and perpendicular magnetic recording due to its strong uniaxial anisotropy and high Curie temperature (Tc). We prepared aluminum doped barium ferrite ceramics (BaAlxFe12-xO19, 0≤x≤6) by the ball mill method. The powder was milled for 96 h, and after forming pellets, annealed for 48 h in air at 1000 °C. The X-ray diffraction (XRD) data show that there are only single hexagonal phases in the samples without any impurity phase. The crystal lattice constants, a and c, were calculated by Cohen's method. Both a and c decrease with increasing x, ranging from 0.588 nm and 2.318 nm to 0.573 nm and 2.294 nm, respectively. A Vibrating Sample Magnetometer (VSM) and Superconducting Quantum Interference Device (SQUID) were used to investigate Tc and magnetic properties of BaFe12-xAlxO19. It is found that Tc decreases with increasing x, from 425 °C to 298 °C. It is also found that the saturated magnetization (4πMs) decreases with increasing x, while the coercivity (Hc) increases with the increase in x. The anisotropy field was also determined from the SQUID measurement.

  12. Cluster Mott insulators and two Curie-Weiss regimes on an anisotropic kagome lattice

    Science.gov (United States)

    Chen, Gang; Kee, Hae-Young; Kim, Yong Baek

    2016-06-01

    Motivated by recent experiments on the quantum-spin-liquid candidate material LiZn2Mo3O8 , we study a single-band extended Hubbard model on an anisotropic kagome lattice with the 1/6 electron filling. Due to the partial filling of the lattice, the intersite repulsive interaction is necessary to generate Mott insulators, where electrons are localized in clusters rather than at lattice sites. It is shown that these cluster Mott insulators are generally U(1) quantum spin liquids with spinon Fermi surfaces. The nature of charge excitations in cluster Mott insulators can be quite different from conventional Mott insulator and we show that there exists a cluster Mott insulator where charge fluctuations around the hexagonal cluster induce a plaquette charge order (PCO). The spinon excitation spectrum in this spin-liquid cluster Mott insulator is reconstructed due to the PCO so that only 1/3 of the total spinon excitations are magnetically active. Based on these results, we propose that the two Curie-Weiss regimes of the spin susceptibility in LiZn2Mo3O8 may be explained by finite-temperature properties of the cluster Mott insulator with the PCO as well as fractionalized spinon excitations. Existing and possible future experiments on LiZn2Mo3O8 , and other Mo-based cluster magnets are discussed in light of these theoretical predictions.

  13. Tailoring Curie temperature and magnetic anisotropy in ultrathin Pt/Co/Pt films

    Directory of Open Access Journals (Sweden)

    Vineeth Mohanan Parakkat

    2016-05-01

    Full Text Available The dependence of perpendicular magnetization and Curie temperature (Tc of Pt/Co/Pt thin films on the thicknesses of Pt seed (Pts and presence of Ta buffer layer has been investigated in this work. Pt and Co thicknesses were varied between 2 to 8 nm and 0.35 to 1.31 nm (across the spin reorientation transition thickness respectively and the Tc was measured using SQUID magnetometer. We have observed a systematic dependence of Tc on the thickness of Pts. For 8nm thickness of Pts the Co layer of 0.35nm showed ferromagnetism with perpendicular anisotropy at room temperature. As the thickness of the Pts was decreased to 2nm, the Tc went down below 250K. XRD data indicated polycrystalline growth of Pts on SiO2. On the contrary Ta buffer layer promoted the growth of Pt(111. As a consequence Ta(5nm/Pt(3nm/Co(0.35nm/Pt(2nm had much higher Tc (above 300K with perpendicular anisotropy when compared to the same stack without the Ta layer. Thus we could tune the ferromagnetic Tc and anisotropy by varying the Pts thickness and also by introducing Ta buffer layer. We attribute these observations to the micro-structural evolution of Pts layer which hosts the Co layer.

  14. Nanoengineering of an Si/MnGe quantum dot superlattice for high Curie-temperature ferromagnetism.

    Science.gov (United States)

    Nie, Tianxiao; Kou, Xufeng; Tang, Jianshi; Fan, Yabin; Lee, Shengwei; He, Qinglin; Chang, Li-Te; Murata, Koichi; Gen, Yin; Wang, Kang L

    2017-02-14

    The realization and application of spintronic devices would be dramatically advanced if room-temperature ferromagnetism could be integrated into semiconductor nanostructures, especially when compatible with mature silicon technology. Herein, we report the observation of such a system - an Si/MnGe superlattice with quantum dots well aligned in the vertical direction successfully grown by molecular beam epitaxy. Such a unique system could take full advantage of the type-II energy band structure of the Si/Ge heterostructure, which could trap the holes inside MnGe QDs, significantly enhancing the hole-mediated ferromagnetism. Magnetic measurements indeed found that the superlattice structure exhibited a Curie temperature of above 400 K. Furthermore, zero-field cooling and field cooling curves could confirm the absence of ferromagnetic compounds, such as Ge8Mn11 (Tc ∼ 270 K) and Ge3Mn5 (Tc ∼ 296 K) in our system. Magnetotransport measurement revealed a clear magnetoresistance transition from negative to positive and a pronounced anomalous Hall effect. Such a unique Si/MnGe superlattice sets a new stage for strengthening ferromagnetism due to the enhanced hole-mediation by quantum confinement, which can be exploited for realizing the room-temperature Ge-based spin field-effect transistors in the future.

  15. Developing spiritual and religious care competencies in practice: pilot of a Marie Curie blended learning event.

    Science.gov (United States)

    Smith, Tracy; Gordon, Tom

    2009-02-01

    The Marie Curie Cancer Care (2003) Spiritual and Religious Care Competencies for Specialist Palliative Care provide a common language for healthcare practitioners in the nebulous area of spiritual care. The development of a pilot blended learning event, as described in this paper, sought to integrate the competencies into practice by providing opportunities both online and in the classroom to explore this aspect of holistic care in depth. In the planning stages, multiprofessional focus groups determined the level of delivery, and emerging themes shaped the content. Self-awareness and reflection were key features and part of the overall process to improve competency. The features of the virtual learning environment (VLE) used were video, facilitated asynchronous discussion and direct links to key articles and documents, while interactive classroom activities built on prior learning. Evaluation covered all aspects of the course design from participant and facilitator perspectives. Participant comments were overwhelmingly positive in relation to the content and chosen delivery methods with concerns about online learning proving unfounded.

  16. Ab initio theory of exchange interactions and the Curie temperature of bulk Gd

    CERN Document Server

    Turek, I; Bihlmayer, G; Bluegel, S

    2003-01-01

    An ab initio approach to the magnetic properties of bulk hexagonal Gd is developed that is based on the local spin-density approximation with the 4f electrons treated as localized core electrons. The effective one-electron problem is solved using the tight-binding linear muffin-tin orbital method in the atomic-sphere approximation with the valence basis consisting of s-, p-and d-type orbitals. The approach leads to a correct description of the ground-state properties like the stability of the ferromagnetic structure, the magnetic moment and the equilibrium lattice constant. Application of a real-space Green-function formalism yields the exchange pair interactions between distant neighbours that are inevitable for quantitative studies of magnetic excitations. The distance dependence and anisotropy of the exchange pair interactions are presented and the Curie temperature in the mean-field approximation is evaluated. The obtained value of 334 K is in much better agreement with the experimental value of 293 K tha...

  17. Testing the feasibility of training peers with a spinal cord injury to learn and implement brief action planning to promote physical activity to people with spinal cord injury.

    Science.gov (United States)

    Gainforth, Heather L; Latimer-Cheung, Amy E; Davis, Connie; Casemore, Sheila; Martin Ginis, Kathleen A

    2015-07-01

    The present study tested the feasibility of training peers with spinal cord injury (SCI) to learn brief action planning (BAP), an application of motivational interviewing principles, to promote physical activity to mentees with SCI. Thirteen peers with SCI attended a half-day BAP workshop. Using a one-arm, pre-, post-test design, feasibility to learn BAP was assessed in terms of peers' (1) BAP and motivational interviewing spirit competence; (2) training satisfaction; and (3) motivations to use BAP as assessed by measures of the theory of planned behavior constructs. Measures were taken at baseline, immediately post-training, and 1 month follow up. Following the training, participants' BAP and motivational interviewing competence significantly increased (P's 2.27). Training satisfaction was very positive with all means falling above the scale midpoint. Participants' perceived behavioral control to use BAP increased from baseline to post (P 0.05). Training peers with a SCI to learn to use BAP is feasible. BAP is a tool that can be feasibly learned by peers to promote physical activity to their mentees.

  18. Experience of wellness recovery action planning in self-help and mutual support groups for people with lived experience of mental health difficulties.

    Science.gov (United States)

    Pratt, Rebekah; MacGregor, Andy; Reid, Susan; Given, Lisa

    2013-01-01

    The main aim of this research was to assess the relevance and impact of wellness recovery action planning (WRAP) as a tool for self-management and wellness planning by individuals with mental health problems from pre-existing and newly formed groups, where the possibilities for continued mutual support in the development of WRAPs could be explored. Interviews and focus groups were conducted and pre-post recovery outcome measures completed (Recovery Assessment Scale and Warwick Edinburgh Mental Well Being Scale). 21 WRAP group participants took part in the research. The WRAP approach, used in groups and delivered by trained facilitators who could also share their lived experience, was very relevant and appeared to have a positive impact on many of the participants. The impact on participants varied from learning more about recovery and developing improved self-awareness to integrating a WRAP approach into daily life. The apparent positive impact of WRAP delivered in the context of mutual support groups indicates that it should be given serious consideration as a unique and worthwhile option for improving mental health. WRAP groups could make a significant contribution to the range of self-management options that are available for improving mental health and well-being.

  19. A comparative test of the theory of reasoned action and the theory of planned behavior in the prediction of condom use intentions in a national sample of English young people.

    Science.gov (United States)

    Sutton, S; McVey, D; Glanz, A

    1999-01-01

    Based on the theories of reasoned action (TRA) and planned behavior (TPB), predictors of condom use intentions were investigated in 949 young people (16-24 years of age) from a national survey conducted in England. Contrary to expectations, the TPB did not perform significantly better than the TRA, even among women. Measures of past behavior were the best predictors of intentions and attenuated the effects of attitude and subjective norm. There was only weak evidence for the multiplicative assumption underlying the TRA and TPB. Although the TRA components were not the strongest predictors, the beliefs on which they are based are potentially amenable to change through information-based intervention programs. A number of practical suggestions for developing intervention strategies are offered.

  20. Understanding affirmative action.

    Science.gov (United States)

    Crosby, Faye J; Iyer, Aarti; Sincharoen, Sirinda

    2006-01-01

    Affirmative action is a controversial and often poorly understood policy. It is also a policy that has been widely studied by social scientists. In this review, we outline how affirmative action operates in employment and education settings and consider the major points of controversy. In addition, we detail the contributions of psychologists and other social scientists in helping to demonstrate why affirmative action is needed; how it can have unintended negative consequences; and how affirmative action programs can be most successful. We also review how psychologists have examined variations in people's attitudes toward affirmative action, in part as a means for testing different theories of social behavior.

  1. Project “ATO – Ação, Trabalho e Oportunidade” (action, work and opportunity: insertion of disabled people in the labor market – an experience report

    Directory of Open Access Journals (Sweden)

    Angela Paula Simonelli

    2013-04-01

    Full Text Available This article reports the experience of the Project “ATO –Ação, Trabalho e Oportunidade” (Action,Work and Opportunity: insertion of disabled people in the labor market in the municipality of São Carlos, state of Sao Paulo, which has been in progress since 2008 through the application of an insertion model based on the activity. It is an interinstitutional research academically developed through an extension activity. It describes the several stages developed by the interdisciplinary team, the methods applied, and the theoretical fundamentals that guide the achievement of the aimed targets. The quantitative and qualitative results found so far are analyzed with respect to the facilitating strategic elements as well as to the relations of interest that act as impediments to the participation of the mentally disabled in the project and for their insertion in the labor market. It was possible to observe that society needs to be prepared to overcome architectural and attitudinal barriers in the workplace, besides disseminating the concepts of inclusion culture and respect for differences in the organizational structures, policies and processes of companies. Some proposals that could contribute to the efficiency of a public policy of insertion of disabled people in the labor market close the present study.

  2. People First

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Around mid-January, when the whole nation was looking forward to celebrating China's traditional Spring Festival, local people's congresses and people's political consultative conferences were busy holding their annual sessions. And in March, the National People's Congress (NPC) and the National Committee of the Chinese People's Political Consultative Conference (CPPCC) will hold their annual sessions.

  3. Large magnetization and high Curie temperature in highly disordered nanoscale Fe2CrAl thin films

    Science.gov (United States)

    Dulal, Rajendra P.; Dahal, Bishnu R.; Forbes, Andrew; Pegg, Ian L.; Philip, John

    2017-02-01

    We have successfully grown nanoscale Fe2CrAl thin films on polished Si/SiO2 substrates using an ultra-high vacuum deposition with a base pressure of 9×10-10 Torr. The thickness of thin films ranges from 30 to 100 nm. These films exhibit cubic crystal structure with lattice disorder and display ferromagnetic behavior. The Curie temperature is greater than 400 K, which is much higher than that reported for bulk Fe2CrAl. The magnetic moments of the films varies from 2.5 to 2.8 μB per formula unit, which is larger than the reported bulk values. Thus, the disordered nanoscale Fe2CrAl films exhibit strong Fe-Fe exchange interactions through Fe-Cr-Fe and Fe-Al-Fe layers, resulting in both a large magnetization and a high Curie temperature.

  4. Effect of pressure on the Curie temperature of Mn2RuSn and Mn2PdSn

    Science.gov (United States)

    Adachi, Y.; Watanabe, T.; Kanomata, T.; Hayasaka, M.; Endo, K.; Nishihara, H.; Xu, X.; Kainuma, R.

    2017-04-01

    Effect of pressure on the Curie temperature TC of the Mn-rich Heusler alloys Mn2RuSn and Mn2PdSn has been investigated by measuring the temperature dependence of initial permeability at various pressures up to 10 kbar. It was found that the Curie temperatures of Mn2RuSn and Mn2PdSn decrease with increasing pressure. The pressure derivatives of TC were estimated to be -0.59 K/kbar for Mn2RuSn and -0.80 K/kbar for Mn2PdSn. On the basis of the experimental results, the relationship between the magnetic transition temperature and the Mn-Mn distance is discussed.

  5. A pixel ionization chamber used as beam monitor at the Institut Curie-Centre de Protontherapie de Orsay (CPO)

    Energy Technology Data Exchange (ETDEWEB)

    La Rosa, A. [Dipartimento di Fisica Sperimentale, Universita di Torino. Via P. Giuria 1, Torino 10125 (Italy) and INFN. Via P. Giuria 1, Turin 10125 (Italy)]. E-mail: larosa@to.infn.it; Garella, M.A. [INFN. Via P. Giuria 1, Turin 10125 (Italy); Bourhaleb, F. [Fondazione TERA. Via Puccini 11, Novara 28100 (Italy); Cirio, R. [INFN. Via P. Giuria 1, Turin 10125 (Italy); Donetti, M. [INFN. Via P. Giuria 1, Turin 10125 (Italy); Fondazione CNAO. Via Caminadella 16, Milan 20123 (Italy); Giordanengo, S. [INFN. Via P. Giuria 1, Turin 10125 (Italy); Givehchi, N. [Dipartimento di Fisica Sperimentale, Universita di Torino. Via P. Giuria 1, Turin 10125 (Italy); INFN. Via P. Giuria 1, Turin 10125 (Italy); Marchetto, F. [INFN. Via P. Giuria 1, Turin 10125 (Italy); Martin, F. [Institut Curie-Centre de Protontherapie de Orsay. Bat. 101 Campus Universitaire, Orsay Cedex 91898 (France); Meyroneinc, S. [Institut Curie-Centre de Protontherapie de Orsay. Bat. 101 Campus Universitaire, Orsay Cedex 91898 (France); Peroni, C. [Dipartimento di Fisica Sperimentale, Universita di Torino. Via P. Giuria 1, Turin 10125 (Italy); INFN. Via P. Giuria 1, Turin 10125 (Italy); Pitta, G. [Fondazione TERA. Via Puccini 11, Novara 28100 (Italy)

    2006-09-15

    The Dipartimento di Fisica Sperimentale and the Istituto Nazionale di Fisica Nucleare (INFN), Torino, in collaboration with the Institut Curie-Centre de Protontherapie de Orsay (CPO), have developed and built a pixel parallel plate ionization chamber to be used as monitor for the proton therapy beam line at the Institut Curie-CPO (Orsay, France). The sensitive area of the detector is (160x160) mm{sup 2}, with the anode segmented in 1024 square pixels arranged in a 32x32 matrix; the area of each pixel is (5x5) mm{sup 2}. The detector has been placed on the beam line just upstream of the last collimator to monitor the beam shape and to measure the stability and reproducibility of the delivery system. In this paper, we present a detailed description of the detector and the results of a set of preliminary tests.

  6. Curie point depth from spectral analysis of aeromagnetic data from Cerro Prieto geothermal area, Baja California, México

    Science.gov (United States)

    Espinosa-Cardeña, J. M.; Campos-Enriquez, J. O.

    2008-10-01

    Using aeromagnetic data acquired in the area from the Cerro Prieto geothermal field, we estimated the depth to the Curie point isotherm, interpreted as the base of the magnetic sources, following statistical spectral-based techniques. According to our results the Curie point isotherm is located at a depths ranging from 14 to 17 km. Our result is somewhat deeper than that obtained previously based only in 2-D and 3-D forward modeling of previous low-quality data. However, our results are supported by independent information comprising geothermal gradients, seismicity distribution in the crust, and gravity determined crustal thickness. Our results imply a high thermal gradient (ranging between 33 and 38 °C/km) and high heat flow (of about 100 mW/m 2) for the study area. The thermal regime for the area is inferred to be similar to that from the Salton trough.

  7. Effect of P-anion codoping on the Curie temperature of GaMnAs diluted magnetic semiconductors

    Science.gov (United States)

    Bouzerar, Richard; Máca, Frantisek; Kudrnovský, Josef; Bergqvist, Lars

    2010-07-01

    Recent measurements of GaMnAs alloy samples with a very small content of P atoms prepared by ion-implanted pulsed laser melting (II-PLM) [Phys. Rev. Lett. 101, 087203 (2008)10.1103/PhysRevLett.101.087203] have shown surprisingly low Curie temperature as compared to undoped samples. An explanation based on a possible metal-insulator transition at constant Mn doping was proposed based on a dramatic increase of the sample resistivity. However, no quantitative calculations supporting such a picture as concerns the Curie temperature were shown. We will present a parameter-free theory of the Curie temperature (TC) which assumes that possible defects due to the II-PLM such as, e.g., space inhomogeneities, vacancies, clustering, and also conventional compensating defects will reduce the sample hole concentration. Their effect was first qualitatively modeled in the framework of the rigid-band model by adjusting the system Fermi level due to the reduction of the carrier concentration which is considered as a parameter of the theory. In addition, the effect of possible conventional compensating defects, such as, e.g., As and P antisites or P and Mn interstitials was also investigated. TC ’s are calculated within the self-consistent local RPA (SCLRPA) and Monte Carlo (MC) simulations. We will demonstrate that a reasonable agreement of calculated and measured TC can be obtained for reduced hole concentrations which are known to exist in GaMnAs samples. As concerns possible specific defects, we have shown that P and Mn interstitials are particularly effective in the reduction of the sample Curie temperature.

  8. Understanding "people" people.

    Science.gov (United States)

    Butler, Timothy; Waldroop, James

    2004-06-01

    Nearly all areas of business--not just sales and human resources--call for interpersonal savvy. Relational know-how comprises a greater variety of aptitudes than many executives think. Some people can "talk a dog off a meat truck," as the saying goes. Others are great at resolving interpersonal conflicts. Some have a knack for translating high-level concepts for the masses. And others thrive when they're managing a team. Since people do their best work when it most closely matches their interests, the authors contend, managers can increase productivity by taking into account employees' relational interests and skills when making personnel choices and project assignments. After analyzing psychological tests of more than 7,000 business professionals, the authors have identified four dimensions of relational work: influence, interpersonal facilitation, relational creativity, and team leadership. This article explains each one and offers practical advice to managers--how to build a well-balanced team, for instance, and how to gauge the relational skills of potential employees during interviews. To determine whether a job candidate excels in, say, relational creativity, ask her to describe her favorite advertising campaign, slogan, or image and tell you why she finds it to be so effective. Understanding these four dimensions will help you get optimal performance from your employees, appropriately reward their work, and assist them in setting career goals. It will also help you make better choices when it comes to your own career development. To get started, try the authors' free online assessment tool, which will measure both your orientation toward relational work in general and your interest level in each of its four dimensions.

  9. Using ferromagnetic nanoparticles with low Curie temperature for magnetic resonance imaging-guided thermoablation

    Directory of Open Access Journals (Sweden)

    Herynek V

    2016-08-01

    Full Text Available Vít Herynek,1 Karolína Turnovcová,2 Pavel Veverka,3 Tereza Dědourková,4,5 Pavel Žvátora,6 Pavla Jendelová,2 Andrea Gálisová,1 Lucie Kosinová,7 Klára Jiráková,2 Eva Syková2 1MR-Unit, Radiodiagnostic and Interventional Radiology Department, Institute for Clinical and Experimental Medicine, Prague, 2Department of Neuroscience, Institute of Experimental Medicine, 3Department of Magnetics and Superconductors, Institute of Physics, Czech Academy of Sciences, Prague, 4Department of Inorganic Technology, Faculty of Chemical Technology, University of Pardubice, 5SYNPO, akciová společnost, Pardubice, 6Department of Analytical Chemistry, Institute of Chemical Technology, 7Diabetes Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic Introduction: Magnetic nanoparticles (NPs represent a tool for use in magnetic resonance imaging (MRI-guided thermoablation of tumors using an external high-frequency (HF magnetic field. To avoid local overheating, perovskite NPs with a lower Curie temperature (Tc were proposed for use in thermotherapy. However, deposited power decreases when approaching the Curie temperature and consequently may not be sufficient for effective ablation. The goal of the study was to test this hypothesis. Methods: Perovskite NPs (Tc =66°C–74°C were characterized and tested both in vitro and in vivo. In vitro, the cells suspended with NPs were exposed to a HF magnetic field together with control samples. In vivo, a NP suspension was injected into a induced tumor in rats. Distribution was checked by MRI and the rats were exposed to a HF field together with control animals. Apoptosis in the tissue was evaluated. Results and discussion: In vitro, the high concentration of suspended NPs caused an increase of the temperature in the cell sample, leading to cell death. In vivo, MRI confirmed distribution of the NPs in the tumor. The temperature in the tumor with injected NPs did not increase

  10. Structure and Curie temperature of Y2Fe17-xCrx

    Institute of Scientific and Technical Information of China (English)

    HAO; Shiqiang; (

    2003-01-01

    [1]Sun Hong, Coey, J. M. D., Otani, Y. et al., Magnetic properties of a new series of rare-earth iron nitrides: R2Fe17Ny (y~2.6), J. Phys.: Condens. Matter., 1990, 2: 6465-6470.[2]Jacobs, T. H., Buschow, K. H. J., Zhou, G. F. et al., Magnetic interactions in R2Fe17-xAlx compounds (R=Ho, Y), J. Magn. Magn. Mater., 1992,116: 220-230.[3]Gvord, D., Lemaire, R., Magnetic transition and anomalous thermal expansion in R2Fe17 compounds, IEEE Trans. Magn., 1974, 10: 109-113.[4]Gubbens, P. C. M., van der Kraan, A. M., Jacobs, T. N. et al., 57Fe and 169Tm Mossbauer effect and magnetic properties of Tm2Fe15M2 (M=Al, Ga, Si), J. Less-Common Met., 1990,159: 173.[5]Middleton, D. P., Buschow, K. H. J., Magnetic properties of Ce2Fe17-xSix compounds, J. Alloys of Compounds, 1994, 206: L1-L2.[6]Jaswal, S. S., Yelon, W. B., Hadjipanayis, G. C. et al., Electronic and magnetic structures of the rare-earth compounds: R2Fe17Nx, Phys. Rev. Lett., 1991,67(5): 644-647.[7]Sabiryanov, R. F., Jaswal, S. S., Ab initio calculations of the Curie temperature of complex permanent-magnet materials, Phys. Rev. Lett., 1997, 79: 155-158.[8]Chen, N. X., Shen, J., Su, X. P., Theoretical study on the phase stability, site preference, and lattice parameters for Gd(Fe,T)12, J. Phys.: Condens. Matter., 2001, 13: 2727-2736.[9]Chen, N. X., Hao, S. Q., Wu, Y. et al., Phase stability and site preference of Sm(Fe,T)12, J. Magn. Magn. Mater., 2001, 233: 169-180.[10]Carlsson, A. E., Gelatt, C. D., Ehrenreich, H., An ab initio pair potential applied to metals, Philos. Mag. A, 1980, 41: 241-250.[11]Chen, N. X., Chen, Z. D., Wei, Y. C., Multidimensional inverse lattice problem and a uniformly sampled arithmetic Fourier transform, Phys. Rev. E, 1997, 55: R5-R8.[12]Chen, N. X., Ren, G. B., Carlsson-Gelatt-Ehrenreich technique and the Mobius inversion theorem, Phys. Rev. B, 1992, 45: 8177-8180.[13]Chen, N. X., Ge, X. J., Zhang, W. Q., Atomistic analysis of the field

  11. Observation of a low Curie temperature ferromagnetic phase of ultrathin epitaxial Fe films on GaAs(0 0 1)

    Energy Technology Data Exchange (ETDEWEB)

    Spangenberg, M. [Joule Physics Laboratory, The Crescent, Institute for Materials Research, University of Salford, Salford M5 4WT (United Kingdom); Neal, J.R. [Joule Physics Laboratory, The Crescent, Institute for Materials Research, University of Salford, Salford M5 4WT (United Kingdom); Shen, T.-H. [Joule Physics Laboratory, The Crescent, Institute for Materials Research, University of Salford, Salford M5 4WT (United Kingdom)]. E-mail: t.shen@salford.ac.uk; Morton, S.A. [Department of Chemistry and Materials Science, Lawrence Livermore National Laboratory, CA 94550 (United States); Tobin, J.G. [Department of Chemistry and Materials Science, Lawrence Livermore National Laboratory, CA 94550 (United States); Waddill, G.D. [Department of Physics, University of Missouri-Rolla, Rolla, MO 65409 (United States); Matthew, J.A.D. [Department of Physics, University of York, York YO1 5DD (United Kingdom); Greig, D. [Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom); Malins, A.E.R. [CLRC Daresbury Laboratory, Warrington WA4 4AD (United Kingdom); Seddon, E.A. [CLRC Daresbury Laboratory, Warrington WA4 4AD (United Kingdom); Hopkinson, M. [EPSRC National Centre for III-V Technologies, University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)

    2005-04-15

    The magnetic properties of epitaxial Fe films on GaAs in the range of the first few monolayers have been the subject of a considerable number of investigations in recent years. The absence of magnetic signatures at room temperature has been attributed to the existence of a magnetic 'dead' layer as well as superparamagnetism. By examining the temperature dependence of the magnetic linear dichroism of the Fe core level photoelectrons, we found a ferromagnetic regime with a Curie temperature, T {sub c} substantially lower than room temperature, e.g., a T {sub c} of about 240 K for thin films of a nominal thickness of 0.9 nm. The values of Curie temperature were sensitive to the initial GaAs substrate conditions and the thickness of the Fe over-layer with a layer of thickness of 1.25 nm showing a T {sub c} above room temperature. The data suggest that the thin Fe films on GaAs(0 0 1) may have ferromagnetic character at an earlier stage of growth than previously expected, although a weaker exchange interaction in the films leads to a substantial reduction in Curie temperature.

  12. Curie Temperature and Microstructural Changes Due to the Heating Treatment of Magnetic Amorphous Materials

    Directory of Open Access Journals (Sweden)

    Gondro J.

    2016-03-01

    Full Text Available Three distinct alloys: Fe86Zr7Nb1Cu1B5, Fe82Zr7Nb2Cu1B8, and Fe81Pt5Zr7Nb1Cu1B5 were characterized both magnetically and structurally. The samples, obtained with spinning roller method as a ribbons 3 mm in width and 20 μm thick, were investigated as-quenched and after each step of a multi steps heating treatment procedure. Each sample was annealed at four steps, fifteen minutes at every temperature, starting from 573K+600K up to +700K depending on type of alloy. Mössbauer spectroscopy data and transmission electron microscope (HRE M pictures confirmed that the as-quenched samples are fully amorphous. This is not changed after the first stages of treatment heating leads to a reduction of free volumes. The heating treatment has a great influence on the magnetic susceptibilities. The treatment up to 600K improves soft magnetic properties: an χ increase was observed, from about 400 to almost 1000 for the samples of alloys without Pt, and from about 200 to 450 at maximum, for the Fe81Pt5Zr7Nb1Cu1B5. Further heating, at more elevated temperatures, leads to magnetic hardening of the samples. Curie temperatures, established from the location of Hopkinson’s maxima on the χ(T curve are in very good agreement with those obtained from the data of specific magnetization, σ(T, measured in a field of 0.75T. As a critical parameter β was chosen to be equal 0.36 for these calculations, it confirmed that the alloys may be considered as ferromagnetic of Heisenberg type. Heating treatment resulted in decreasing of TC. These changes are within a range of several K.

  13. GLANAM (Glaciated North Atlantic Margins): A Marie Curie Initial Training Network between Norway, the UK & Denmark

    Science.gov (United States)

    Petter Sejrup, Hans; Oline Hjelstuen, Berit

    2015-04-01

    GLANAM (Glaciated North Atlantic Margins) is an Initial Training Network (ITN) funded under the EU Marie Curie Programme. It comprises 10 research partners from Norway, UK and Denmark, including 7 University research teams, 1 industrial full partner and 2 industrial associate partners. The GLANAM network will employ and train 15 early career researchers (Fellows). The aim of GLANAM is to improve the career prospects and development of young researchers in both the public and private sector within the field of earth science, focusing on North Atlantic glaciated margins. The young scientists will perform multi-disciplinary research and receive training in geophysics, remote sensing, GIS, sedimentology, geomorphology, stratigraphy, geochemistry and numerical modeling through three interconnected work packages that collectively address knowledge gaps related to the large, glacial age, sedimentary depocentres on the North Atlantic margin. The 15 Fellows will work on projects that geographically extend from Ireland in the south to the High Arctic. Filling these gaps will not only result in major new insights regarding glacial age processes on continental margins in general, but will also provide paleoclimate information essential for understanding the role of marine-based ice sheets in the climate system and for the testing of climate models. GLANAM brings together leading European research groups working on glaciated margins in a coordinated and collaborative research and training project. Focusing on the North Atlantic margins, this coordinated approach will lead to a major advance in the understanding of glaciated margins more widely and will fundamentally strengthen European research and build capacity in this field.

  14. The 1951-98 experience of the Paris Institut Curie Radiopathology Unit: a preliminary report

    Energy Technology Data Exchange (ETDEWEB)

    Cosset, J.M.; Perdereau, B.; Dubray, B.; Helfre, S.; Brixy, F.; Gongora, R.; Fourquet, A. [Institut Curie, 26 rue d' Ulm, 75005 Paris (France)

    1999-12-01

    From 1 January 1951 to 30 June 1998, 696 patients presented spontaneously or were referred to the French Institut Curie Radiopathology Unit following a more or less severe accidental irradiation. Of these, 568 patients came from France, while 128 were sent by various foreign countries. The very great majority of irradiation accidents occurred in the workplace, particularly in industry. Interestingly, 'non-nuclear' industry was responsible for three times more events than the nuclear industry. While incidental irradiation of the public by lost radioactive sources was exceedingly rare in France, it seemed to be more frequent in our cohort of foreign patients. Radiation phobia accounted for about 10% of cases in the French cohort, but the number of cases did not seem to increase with time. Overall, the accrual of patients over time appears to be stable, with 10 to 25 new cases consulting each year. Fortunately, a majority of cases corresponded to low-level irradiation (and even no irradiation at all). In the French cohort, only 21.6% of patients, showing deterministic effects, required some form of treatment, with 4.9% considered as 'severe' cases. Not unexpectedly, more patients required treatment in the foreign cohort (35.2%), with 24.2% of severe cases, including four deaths. The main features of this database are consistent with the data previously reported by the IAEA, UNSCEAR and REAC/TS. Although the number of severe cases is small, it should still be considered to be too high, especially as most of these accidents could have been easily avoided if a few basic radioprotection rules had been fully respected. (abstract)

  15. Curie point depth in the SW Caribbean using the radially averaged spectra of magnetic anomalies

    Science.gov (United States)

    Salazar, Juan M.; Vargas, Carlos A.; Leon, Hermann

    2017-01-01

    We have estimated the Curie Point Depth (CPD) using the average radial power spectrum in a tectonically complex area located in the SW Caribbean basin. Data analyzed came from the World Digital Magnetic Anomaly Map, and three methods have been used to compare results and evaluate uncertainties: Centroid, Spectral Peak, and Forward Modeling. Results show a match along the three methods, suggesting that the CPD values in the area ranging between 6 km and 50 km. The results share the following characteristics: A) High values (> 30 km) are in continental regions; B) There is a trend of maximum CPD values along the SW-NE direction, starting from the Central Cordillera in Colombia to the Maracaibo Lake in Venezuela; C) There is a maximum CPD at the Sierra Nevada de Santa Marta (Colombia) as well as between Costa Rica - Nicaragua and Nicaragua - Honduras borders. The lowest CPD values (coastal regions and offshore. We also tested results by estimating the geothermal gradient and comparing measured observations of the study area. Our results suggest at least five thermal terrains in the SW Caribbean Basin: A) The area that is comprising the Venezuela Basin, the Beata Ridge and the Colombia Basin up to longitude parallel to the Providencia Throat. B) The area that includes zones to the north of the Cocos Ridge and Panam Basin up to the trench. C) The orogenic region of the northern Andes and including areas of the Santa Marta Massif. D) The continental sector that encompasses Nicaragua, northern Costa Rica and eastern of Honduras. E) Corresponds to areas of the northern Venezuela and Colombia, NW of Colombia, the Panamanian territory and the transition zones between the Upper and Lower Nicaragua Rise.

  16. Curie's hypotheses concerning radioactivity and the origin of the elements

    Energy Technology Data Exchange (ETDEWEB)

    Kuroda, P.K.

    1999-09-01

    Pierre Curie gave two hypotheses at first; (1) It can be supposed that the radioactive substances borrow the energy, which they release, from an external radiation, and their radiation would then be a secondary radiation, (2) It can be supposed that the radioactive substances draw from themselves the energy which they release. The second hypothesis has shown the more fertile in explaining the properties of the radioactive substances. Consequently, the first hypothesis became more or less forgotten. It appears, however, the first hypothesis should play an important role in explaining the phenomena concerning the origin of the elements. The Oklo Phenomenon has demonstrated that a nuclear fire had once existed on our planet earth and formation of heavy elements was occurring in nature. The author pointed out that the difference in the isotopic compositions of xenon found in meteorites, lunar samples and in the earth's atmosphere can only be explained as due to the alterations of the isotropic compositions of xenon by combined effect of (a) mass-fractionation, (b) spallation, and (c) stellar temperature neutron-capture reactions. The strange xenon components are not isotopically pure substance. Instead, xenon-HL is a mixture of the {sup 244}Pu fission xenon and the xenon whose isotopic compositions is severely altered by a combined effect of the processes (a), (b) and (c) mentioned above. These results also indicate that C1 carbonaceous chondrites, which is generally as the most primitive sample of the solar system material, began to retain its xenon 5.1 billion years ago, when the plutonium to uranium ratio in the solar system was as high as almost 0.6 (atom/atom), while the C2 carbonaceous chondrite began to retain their xenon about 150 million years later and the ordinary chondrites and achondrite about 500 to 600 million years later. This means that the birth of the solar system began soon after the last supernova exploded about 5.1 billion years ago, and the

  17. Pesquisa-Ação-Formação Inter e Transdisciplinar com Pessoas Envolvidas com a Questão do Morador de Rua Inter-And Transdisciplinary Action-Formation-Research with People Involved in the Homeless Issue

    Directory of Open Access Journals (Sweden)

    Aparecida Magali de Souza Alvarez

    2011-06-01

    Full Text Available Este artigo apresenta reflexões teórico-metodológicas sobre processo de investigação de pós-doutorado que objetivava basicamente construir - na ação - estratégia de "psico-sócio-formação" de pessoas envolvidas com a questão do morador de rua; criar e aplicar um recurso metodológico operacional denominado "conto de encontro transformador". Do ponto de vista teórico, sob perspectivas inter e transdisciplinares de produção do conhecimento, essa "pesquisa-ação-formação" baseou-se no encontro dialógico entre os conhecimentos sobre "encontro transformador", "resiliência" e "ágape" e construtos teóricos da área da Educação, com ênfase no processo de autoformação. O projeto contou com vinte participantes: moradores de rua; trabalhadores de instituições de apoio a moradores de rua; técnicos das Secretarias de Assistência Social da Prefeitura de São Paulo e/ou da Secretaria da Saúde; e provenientes da Universidade de São Paulo e de outras Universidades do Brasil, França e Canadá.This paper presents theoretical and methodological reflections on a postdoctoral investigation process that aimed to build - on action - a psychological, social and formational strategy targeted at people involved in the question of homeless individuals; and to create and apply an operational methodological resource called "transforming encounter short story". From the theoretical point of view, under inter- and transdisciplinary perspectives of knowledge production, this action-formation-research was based on the dialogic encounter between the concepts of "transforming encounter", "resilience" and "agape"; and on theoretical constructs from the Education area, with emphasis on the self-formation process. The project had twenty participants: homeless people; workers from institutions that support the homeless; technicians with the Social Work Departments of the Municipal Government of São Paulo and/or with the Health Department; and

  18. 10. national conference of Maria Sklodowska-Curie Polish Radiation Research Society. Abstract of papers; 10. krajowy zjazd Polskiego Towarzystwa Badan Radiacyjnych im. Marii Sklodowskiej-Curie. Streszczenia referatow

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    The 10. national conference of M. Sklodowska-Curie Polish Radiation Research Society has given the opportunity to present novel Polish advisement in all fields of radiation research, e.g. radiation chemistry and biology, radiation processing, environmental study, mathematical modeling and simulation as well as different theoretical study. As a whole it may be treated as a review of actual state of art. The scientific progress since 1992 when the 9. national conference place up to now can be easy assessed on the base of presented material.

  19. Empowering young people/ young adults to action

    DEFF Research Database (Denmark)

    Brander, Birgitte Gade

    2014-01-01

    Research questions: How do the young students relate to their community? How do young students position themselves as agents in their own lives and in the places they live – which discourse is used?......Research questions: How do the young students relate to their community? How do young students position themselves as agents in their own lives and in the places they live – which discourse is used?...

  20. La vivencia de un grupo de jubilados-anciano: investigación - acción The experience of a group of retired-elderly people: research-action

    Directory of Open Access Journals (Sweden)

    Rosalina Aparecida Partezani Rodrigues

    1997-10-01

    Full Text Available Este estudio se propone comprender la situación del jubilado, a través de la vivencia en grupo, y permitir que los jubilados refleccionen con respecto a su condición. Se ha utilizado la metodologia de la investigación - acción, con 25 sujetos jubilados de la Universidad, con edad entre 51 y 79 años. Las narraciones respecto de las vivencias fueron obtenidas por medio de interacción verbal, discusión en grupo y entrevista. En el análisis de las vivencias han emergido cuestiones relacionadas a los intereses de los jubilados ancianos, cuanto a la salud física y mental, relacionamiento, aprendizaje, ambiente social y ocio.The present study aims at comprehending the retired people through a group experience as well as allowing them to reflect about their condition. The authors utilized the research-action methodology, with 25 retired subjects who worked in the University, aging from 51 to 79 years old. The narratives related to their experiences were obtained through verbal interaction, group discussions and interviews. From the analysis of the experiences emerged questions associated to the retired-elderly interests, their physical and mental health, relationship, learning process, social environment and leisure.

  1. Transversalidades no estudo sobre jovens no Brasil: educação, ação coletiva e cultura Transversalities in the study on young people in Brazil: education, collective action, and culture

    Directory of Open Access Journals (Sweden)

    Marilia Pontes Sposito

    2010-04-01

    Full Text Available O artigo examina as possibilidades de análise das ações coletivas de jovens, particularmente aquelas que derivam de práticas culturais, no interior de uma perspectiva que procura resgatar orientações do pensamento sociológico brasileiro que recusa uma segmentação estanque dos campos de estudo. A partir de balanço realizado da produção discente na Pós-Graduação nas Ciências Sociais, Educação e Serviço Social, é possível delinear novos desafios para a pesquisa sobre jovens e suas práticas coletivas. Um conjunto de estudos realizados a partir de meados dos anos 1990 oferece um quadro importante das manifestações derivadas dos denominados grupos de estilos e culturas juvenis, sobretudo no campo da música. Darks, punks, rappers foram os principais estilos investigados e, em menor escala, a cultura funk. A compreensão adensada das presenças diversificadas dos jovens nos espaços públicos em seus coletivos remete a uma necessária trans-versalidade que demanda não desconsiderar na análise outras dimensões da experiência juvenil. As transformações decorrentes da intensa expansão dos sistemas de ensino nas últimas décadas no Brasil, as novas configurações do mundo do trabalho e as significativas formas de apropriação do espaço urbano que articula novas formas de sociabilidade são aspectos importantes a serem considerados nas análises das denominadas culturas juvenis e suas formas de ação coletiva.This article examines the possibilities of analyzing collective action by young people, especially that which derives from cultural practices within a perspective that tries to recall the guiding lines of the Brazilian sociological thought which denies a rigid segmentation of study fields. Starting from a survey on student production in Post-Graduation programs in Social Sciences, Education, and Social Work, it is possible to delineate new challenges for the research on young people and their collective practices. A

  2. Co{sub x}C nanorod magnets: Highly magnetocrystalline anisotropy with lower Curie temperature for potential applications

    Energy Technology Data Exchange (ETDEWEB)

    El-Gendy, Ahmed A., E-mail: aelgendy@vcu.edu [Department of Chemistry, Virginia Commonwealth University (VCU), Richmond, VA (United States); Nanotechnology and Nanometrology Lab., National Institute for Standards (NIS), Giza (Egypt); Almugaiteeb, Turki [Department of Chemistry, Virginia Commonwealth University (VCU), Richmond, VA (United States); Carpenter, Everett E., E-mail: ecarpenter2@vcu.edu [Department of Chemistry, Virginia Commonwealth University (VCU), Richmond, VA (United States)

    2013-12-15

    Magnetic Co{sub x}C nanorods with larger magnetocrystalline anisotropy of 5×10{sup 5} J/m{sup 3} as well as larger coercivity and lower Curie temperature are introduced. The particles have an average diameter of 8 nm and shows three different magnetic behaviors. The sample shows ferromagnetism up to 400 K, superparamagnetism at temperature >400 K and

  3. Stress-induced large Curie temperature enhancement in Fe(sub 64)Ni(sub 36) Invar alloy.

    Energy Technology Data Exchange (ETDEWEB)

    Gorria, P.; Martinez-Blanco, D.; Perez, M. J.; Blanco, J. A.; Hernando, A.; Laguna-Marco, M. A.; Haskel, D.; Souza-Neto, N. M.; Xmith, R. I.; Marshall, W. G.; Garbarino, G.; Mezouar, M.; Fernandez-Martinez, A.; Chaboy, J.; Fernandez Barquin, L.; Rodriguez Castrillon, J. A.; Moldovan, M.; Garcia Alonso, J. I.; Zhang, J.; Llobet, A.; Jiang, J. S.; Univ. de Oviedo; Inst. de Magnetismo Aplicado; ISIS Facility; ESRF; Univ.Grenoble and CNRS; CSIC-Univ. de Zaragoza; Univ. de Cantabria; LANL

    2009-01-01

    We have succeeded in increasing up to 150 K the Curie temperature in the Fe{sub 64}N{sub 36}6 invar alloy by means of a severe mechanical treatment followed by a heating up to 1073 K. The invar behavior is still present as revealed by the combination of magnetic measurements with neutron and x-ray techniques under extreme conditions, such as high temperature and high pressure. The proposed explanation is based in a selective induced microstrain around the Fe atoms, which causes a slight increase in the Fe-Fe interatomic distances, thus reinforcing ferromagnetic interactions due to the strong magnetoelastic coupling in these invar compounds.

  4. Studies on the Relation between the Composition of Thermal Sensitive MnZn Ferrite and Curie Temperature

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Thermal sensitive MnZn ferrite is a kind of soft magnetic ferrite material with lower Curie temperature (Tc) and can be used to make many kinds of magnetic thermal sensitive sensors with high sensitivity. In this paper, the relation between the composition of thermal sensitive ferrite and Tc was studied. It was found that Tc changes linearly with ZnO extent when the content of Fe2O3 is fixed. Based on lots of experiments, an experimential formula to determine Tc was given out.

  5. Effect of ionic radii on the Curie temperature in Ba1-x-ySrxCayTiO3 compounds

    Science.gov (United States)

    Berenov, A.; Le Goupil, F.; Alford, N.

    2016-06-01

    A series of Ba1-x-ySrxCayTiO3 compounds were prepared with varying average ionic radii and cation disorder on A-site. All samples showed typical ferroelectric behavior. A simple empirical equation correlated Curie temperature, TC, with the values of ionic radii of A-site cations. This correlation was related to the distortion of TiO6 octahedra observed during neutron diffraction studies. The equation was used for the selection of compounds with predetermined values of TC. The effects of A-site ionic radii on the temperatures of phase transitions in Ba1-x-ySrxCayTiO3 were discussed.

  6. Curie point depth and heat flow from spectral analysis of aeromagnetic data over the northern part of Western Desert, Egypt

    Science.gov (United States)

    Saada, Saada Ahmed

    2016-11-01

    The present work aims to estimate the Curie point depth and the surface heat flow for the northern part of the Western Desert using aeromagnetic data. Applying spectral analysis to aeromagnetic anomalies has provided equitable promising geological results, useful for further geothermal or petroleum exploration. The total intensity aeromagnetic map was first reduced to the north magnetic pole to correct the shape and position of different magnetic anomalies over their causative bodies. Secondly, the short wavelengths were removed to enhance the deeper long wavelengths related to the deep sources. Spectral analysis indicates that the area is underlined by an average Curie point depth of about 27 km. This implies an average thermal heat flow (53 mW/m2) lower than the average global heat flow. The investigated area was divided into eighteen blocks, where the average depths to centroid and top of the magnetic source were estimated for each block. The results of this work show a general depth increase of the magnetic boundaries from 24.5 km in the southern area to 33 km at the northern part. The calculated surface heat flow decreases from about 56 to 42 mW/m2 in the same direction. Consequently, this area is characterized by its low geothermal gradient and surface heat flow. This low geothermal gradient indicates that the upper mantle contributes to the magnetic features at the northern offshore parts. This work also recommends by deep drilling for petroleum exploration and production within the Egyptian Mediterranean Sea exploration strip.

  7. Networks for Collective Action

    CERN Document Server

    Bruggeman, Jeroen

    2016-01-01

    A significant challenge is to explain how people cooperate for public goods. The problem is more difficult for people when their public good and its benefits are unclear at the outset and its timing and costs are uncertain. However, history shows that even under adverse conditions, people can cooperate. As a prelude to cooperation, people can establish (or reinforce) social ties through communication. Consequently, individuals' cognitive states may synchronize, so that they can depend on like-minded people rather than on a situation beyond their control. Whether this succeeds largely depends on the network that is formed (or used), which should also help them to overcome misunderstandings and to synchronize relatively fast. From a well-known model of social influence it is inferred that network patterns with high algebraic connectivity, featuring multiple independent connections, are optimal for collective action.

  8. Extrinsic Curie temperature and spin reorientation changes in Nd{sub 2}Fe{sub 14}B/{alpha}-Fe nanocomposites

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, L.H. [Brookhaven National Lab., Upton, NY (United States); Panchanathan, V. [Magnequench International, Inc., Anderson, IN (United States)

    1998-05-01

    The Curie temperatures and spin reorientation temperatures of a series of four melt-spun nanocomposite materials comprised of Nd{sub 2}Fe{sub 1}4B and varying amounts of {alpha}-Fe were measured using independent techniques. The phase constitution and grain size was assessed with synchrotron x-ray diffraction; the Curie temperatures were measured by differential thermal analysis (DTA) and dc SQUID magnetometry in the temperature range 375 K {le} T {le} 800 K, whereas the spin reorientation transition temperature was determined from ac susceptibility measurements taken in the range 10 K {le} T {le} 300 K. The Curie temperature increases with increasing excess iron content, resulting in a 18 {degree} enhancement over the Curie temperature of pure Nd{sub 2}Fe{sub 14}B for 27 wt% excess {alpha}-Fe. The spin reorientation temperatures are depressed from the single-crystal value by an average of 10 degrees. Both anomalous effects are attributed to intergranular exchange coupling present in the alloys, although the effects of uncompensated stress between the constituent phases cannot be ruled out The experimental results suggest that while the Curie temperature of the Nd{sub 2}Fe{sub 14}B phase may be extrinsically enhanced significantly beyond the bulk value, possibly extending the range of applications of this compound, the anisotropy may be simultaneously lowered, impeding the attainment of high coercivities in these alloys.

  9. WA22 "it's hard to watch people die for a living": embedding the palliative approach into the organisational culture of long term care homes using participatory action research.

    Science.gov (United States)

    Kelley, Mary Lou; Kaasalainen, Sharon; McKee, Marg; Marcella, Jill; Gaudet, Alesha; McAnulty, Jessica

    2015-04-01

    Long term care homes (LTC) in Canada have become a major location of death with 20% or more residents dying each year. Given the increasing age and frailty of residents, this is soon expected to increase to 40%. LTC has struggled to incorporate care of the dying into their day to day practice and culture because death is often absent from formalised policy and protocols. This workshop will share resources created during a 5 year participatory action research project in Ontario, Canada that aimed to improve the quality of life of people who were dying in long term care homes. Through staff participation and empowerment, a process of organisational capacity development was undertaken. An extensive needs assessment was followed by creating an interprofessional palliative care resource team within each home. This team assessed the assets and gaps in their home and guided development of education, policy and clinical practices to address needs. Community partners with expertise in palliative care were engaged to support staff. A framework for palliative care in LTC integrates the palliative approach into the residents' journey from admission to death. Resources for organisational change were developed and organised into a toolkit that is unique to the LTC setting and context, and can be accessed at www.palliativealliance.ca The Quality Palliative Care in Long term Care Toolkit is the first of its kind in Canada. The toolkit can guide LTC management and staff through a process of culture change to incorporate a palliative approach to care. © 2015, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  10. The Shape of Action

    Science.gov (United States)

    Hard, Bridgette Martin; Recchia, Gabriel; Tversky, Barbara

    2011-01-01

    How do people understand the everyday, yet intricate, behaviors that unfold around them? In the present research, we explored this by presenting viewers with self-paced slideshows of everyday activities and recording looking times, subjective segmentation (breakpoints) into action units, and slide-to-slide physical change. A detailed comparison of…

  11. Affirmative Action for Men?

    Science.gov (United States)

    Malveaux, Julianne

    2005-01-01

    If colleges are willing to consider "social engineering" and affirmative action to ensure the inclusion of White men, are they willing to do so for African Americans and other people of color? Will the Center for Individual Rights ride to the rescue of the White women who may be unfairly nudged out of positions for which they are "qualified" in…

  12. Being observed magnifies action

    NARCIS (Netherlands)

    Steinmetz, J.|info:eu-repo/dai/nl/411851675; Xu, Q.; Fishbach, A.; Zhang, Y.

    2016-01-01

    We test the hypothesis that people, when observed, perceive their actions as more substantial because they add the audience’s perspective to their own perspective. We find that participants who were observed while eating (Study 1) or learned they were observed after eating (Study 2) recalled eating

  13. Numerical study on the multi-region bio-heat equation to model magnetic fluid hyperthermia (MFH) using low Curie temperature nanoparticles.

    Science.gov (United States)

    Zhang, Chuanqian; Johnson, Duane T; Brazel, Christopher S

    2008-12-01

    This study develops and solves two-dimensional convective-conductive coupled partial differential equations based on Pennes' bio-heat transfer model using low Curie temperature nanoparticles (LCTNPs) to illustrate thermal behavior quantitatively within tumor-normal composite tissue by establishing a multi-region finite difference algorithm. The model combines NEel relaxation and temperature-variant saturation magnetization derived from Brillouin Equation and Curie-Weiss Law. The numerical results indicate that different deposition patterns of LCTNP and boundary conditions directly effect the steady state temperature distribution. Compared with high Curie temperature nanoparticles (HCTNPs), optimized distributions of LCTNPs within tumorous tissue can be used to control the temperature increase in tumors for hyperthermia treatment using an external magnetic field while healthy tissue surrounding a tumor can be kept closer to normal body tissue, reducing the side effects observed in whole body and regional hyperthermia therapy.

  14. Classification of species in the genus Penicillium by Curie point pyrolysis/mass spectrometry followed by multivariate analysis and artificial neural networks

    DEFF Research Database (Denmark)

    Nilsson, Torben; Bassani, Maria R.; Larsen, Thomas Ostenfeld

    1996-01-01

    linkage clustering. By this approach a successful classification of the species Penicillium italicum, P. expansum and P. digitatum originating from fruits was obtained. Isolates of the same species grouped together in the dendrogram, while the different species were distinguished. Also when grown on two......Curie point pyrolysis/mass spectrometry of Penicillium species was performed with 530 degrees C Curie point foils. The mass spectra were submitted to principal component analysis, canonical variates analysis and hierarchical cluster analysis, producing a final dendrogram by the use of average...... in a correct classification in all cases. Thus, it is concluded that Curie point pyrolysis/mass spectrometry is useful in chemotaxonomic studies of the closely related species in the genus Penicillium....

  15. Angular dependence of dipole-dipole-Curie-spin cross-correlation effects in high-spin and low-spin paramagnetic myoglobin.

    Science.gov (United States)

    Pintacuda, Guido; Hohenthanner, Karin; Otting, Gottfried; Müller, Norbert

    2003-10-01

    The (15)N-HSQC spectra of low-spin cyano-met-myoglobin and high-spin fluoro-met-myoglobin were assigned and dipole-dipole-Curie-spin cross-correlated relaxation rates measured. These cross-correlation rates originating from the dipolar (1)H-(15)N interaction and the dipolar interaction between the (1)H and the Curie spin of the paramagnetic center contain long-range angular information about the orientation of the (1)H-(15)N bond with respect to the iron-(1)H vector, with information measurable up to 11 A from the metal for the low-spin complex, and between 10 to 25 A for the high-spin complex. Comparison of the experimental data with predictions from crystal structure data showed that the anisotropy of the magnetic susceptibility tensor in low spin cyano-met-myoglobin significantly influences the cross-correlated dipole-dipole-Curie-spin relaxation rates.

  16. Human Actions Made Tangible

    DEFF Research Database (Denmark)

    Buur, Jacob; Caglio, Agnese; Jensen, Lars Christian

    2014-01-01

    projects, it remains a challenge to investigate in detail how people interact with all of their body. Analysis of full-body movement is time consuming, notation techniques are rare, and findings are difficult to share between members of a design team. In this paper we propose tangible video analysis......, a method developed to engage people from different backgrounds in collaboratively analysing videos with the help of physical objects. We will present one of these tools, Action Scrabble, for analysing temporal organisation of human actions. We work with a case of skilled forklift truck driving....... By backtracking our design research experiments, we will unfold how and why the tangible tool succeeds in engaging designers with varied analysis experience to collaboratively focus on human action structures – and even find video analysis fun!...

  17. Thickness dependent Curie temperature and power-law behavior of layering transitions in ferromagnetic classical and quantum thin films described by Ising, XY and Heisenberg models

    Energy Technology Data Exchange (ETDEWEB)

    Yüksel, Yusuf, E-mail: yusuf.yuksel@deu.edu.tr; Akıncı, Ümit

    2015-04-01

    Ferromagnetic–paramagnetic phase transitions in classical and quantum thin films have been studied up to 50 mono-layers using effective field theory with two-site cluster approximation. Variation of the Curie temperature as a function of film thickness has been examined. The relative shift of the Curie temperature from the corresponding bulk value has been investigated in terms of the shift exponent λ. We have found that shift exponent λ clearly depends on the strength of the ferromagnetic exchange coupling of the surface. Moreover, we have not observed any significant difference between classical and quantum exponents for a particular model.

  18. Action semantics modulate action prediction.

    Science.gov (United States)

    Springer, Anne; Prinz, Wolfgang

    2010-11-01

    Previous studies have demonstrated that action prediction involves an internal action simulation that runs time-locked to the real action. The present study replicates and extends these findings by indicating a real-time simulation process (Graf et al., 2007), which can be differentiated from a similarity-based evaluation of internal action representations. Moreover, results showed that action semantics modulate action prediction accuracy. The semantic effect was specified by the processing of action verbs and concrete nouns (Experiment 1) and, more specifically, by the dynamics described by action verbs (Experiment 2) and the speed described by the verbs (e.g., "to catch" vs. "to grasp" vs. "to stretch"; Experiment 3). These results propose a linkage between action simulation and action semantics as two yet unrelated domains, a view that coincides with a recent notion of a close link between motor processes and the understanding of action language.

  19. Stress-induced Curie temperature increase in the Fe{sub 64}Ni{sub 36} invar alloy

    Energy Technology Data Exchange (ETDEWEB)

    Gorria, Pedro; Martinez-Blanco, David; Blanco, Jesus A. [Departamento de Fisica, Universidad de Oviedo (Spain); Boada, Roberto; Chaboy, Jesus [ICMA and Departamento de Fisica de la Materia Condensada, CSIC - Universidad de Zaragoza (Spain); Fernandez-Martinez, Alejandro [LGIT, University of Grenoble and CNRS, Maison des Geosciences, Grenoble (France); Institut Laue-Langevin, Grenoble (France); Garbarino, Gaston; Castro, German R.; Mezouar, Mohamed [European Synchrotron Radiation Facility (ESRF), Grenoble (France); Smith, Ronald I. [ISIS Facility, RAL, Chilton, Didcot, Oxon (United Kingdom); Alonso, J.I.G. [Department of Physical and Analytical Chemistry, University of Oviedo (Spain); Hernando, Antonio [Instituto de Magnetismo Aplicado, UCM-ADIF-CSIC, Madrid (Spain)

    2009-05-15

    Structural and magnetic changes on invar Fe{sub 64}Ni{sub 36} alloy (T{sub C}=500 K) produced by mechanical milling followed by heating up to 1073 K, were investigated by neutron diffraction, magnetization measurements, X-ray diffraction under high pressures and X-ray absorption at both Fe and Ni K-edges. We argue that the strain induced in the Fe{sub 64}Ni{sub 36} material after this treatment mainly affects the Fe sites due to the magnetovolume coupling, the most notorious feature being the increase of the Curie temperature ({delta}T{sub C}=70 K). (copyright 2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  20. The study of high Curie temperature ferromagnetism properties in Mn-doped SiC thin film

    Directory of Open Access Journals (Sweden)

    Chaoyang Kang

    2015-01-01

    Full Text Available Mn-doped 3C-SiC film has been prepared onto the Si (111 substrate by employing a molecular beam epitaxy method. The experimental analysis establishes that the prepared sample shows the ferromagnetic property with a relatively high Curie temperature (Tc of 355 K, which is an exciting phenomenon on account of the scarceness in the SiC-based diluted magnetic semiconductor. The analysis derived from the X-ray diffraction and absorption spectroscopy patterns indicates that Mn atoms should react with Si atoms and then form Mn4Si7 compounds. Combined with the theoretical simulation, it is speculated that a new alloy phase of Mn4Si7Cx maybe appear, which should be responsible for the exceptionally high Tc ferromagnetic behavior in the sample.

  1. Enhancement of Curie temperature and transition temperature range induced by Al doping in Mn1-xAlxCoGe

    Science.gov (United States)

    Si, Xiaodong; Liu, Yongsheng; Lei, Wei; Xu, Juan; Du, Wenlong; Lin, Jia; Zhou, Tao; Lu, Xiaofei

    2016-12-01

    Mn1-xAlxCoGe alloys with a second order transition were produced by arc-melting method. The substitution of Mn by Al increased the Curie temperature (TC) from 260.5 K to 300.8 K, the magnetic entropy change (|ΔSM|) decreased from 3.78 J·Kg-1K-1 to 2.35 J·Kg-1K-1 under a field change of Δμ0H=5 T. In addition, the |ΔSM| well linearly depends on the H2/3 around TC. Furthermore, the relative cooling power (RCP) can reach 242.3 J·Kg-1 with a large full width at half maximum of |ΔSM| (75.5 K) for x=0.02. The decrease of |ΔSM| is explained by the corresponding monotonical decrease of magnetic moment per formula unit.

  2. Enhancing the Curie temperature of ferromagnetic semiconductor (Ga,Mn)As to 200 K via nanostructure engineering.

    Science.gov (United States)

    Chen, Lin; Yang, Xiang; Yang, Fuhua; Zhao, Jianhua; Misuraca, Jennifer; Xiong, Peng; von Molnár, Stephan

    2011-07-13

    We demonstrate by magneto-transport measurements that a Curie temperature as high as 200 K can be obtained in nanostructures of (Ga,Mn)As. Heavily Mn-doped (Ga,Mn)As films were patterned into nanowires and then subject to low-temperature annealing. Resistance and Hall effect measurements demonstrated a consistent increase of T(C) with decreasing wire width down to about 300 nm. This observation is attributed primarily to the increase of the free surface in the narrower wires, which allows the Mn interstitials to diffuse out at the sidewalls, thus enhancing the efficiency of annealing. These results may provide useful information on optimal structures for (Ga,Mn)As-based nanospintronic devices operational at relatively high temperatures.

  3. Magnetocaloric effect in heavy rare-earth elements doped Fe-based bulk metallic glasses with tunable Curie temperature

    Science.gov (United States)

    Li, Jiawei; Huo, Juntao; Law, Jiayan; Chang, Chuntao; Du, Juan; Man, Qikui; Wang, Xinmin; Li, Run-Wei

    2014-08-01

    The effects of heavy rare earth (RE) additions on the Curie temperature (TC) and magnetocaloric effect of the Fe-RE-B-Nb (RE = Gd, Dy and Ho) bulk metallic glasses were studied. The type of dopping RE element and its concentration can easily tune TC in a large temperature range of 120 K without significantly decreasing the magnetic entropy change (ΔSM) and refrigerant capacity (RC) of the alloys. The observed values of ΔSM and RC of these alloys compare favorably with those of recently reported Fe-based metallic glasses with enhanced RC compared to Gd5Ge1.9Si2Fe0.1. The tunable TC and large glass-forming ability of these RE doped Fe-based bulk metallic glasses can be used in a wide temperature range with the final required shapes.

  4. curi y bacánowa: Rituales de vida y muerte en la sierra tarahumara

    Directory of Open Access Journals (Sweden)

    Ángel Acuña Delgado

    2009-01-01

    Full Text Available En base a los datos obtenidos durante los once meses de experiencia de campo, entre 2001 y 2005, en varias comunidades rarámuris de la Alta y Baja Tarahumara, al suroeste del estado de Chihuahua (México, en el presente trabajo centramos la atención en dos rituales y al mismo tiempo formas de danza, ambos de carácter privado, que ocupan un papel esencial en la cosmovisión rarámuri. El hecho de haber participado como espectador invitado en tales prácticas nos permitirá describir el contexto etnográfico de primera mano; para finalizar destacando especialmente las funciones y significados que llevan asociados. Antes ofreceremos, no obstante, una serie de referencias bibliográficas que sitúan al jícuri y al bacánowa entre la historia y la leyenda.

  5. Strongly enhanced Curie temperature in carbon-doped Mn{sub 5}Ge{sub 3} films

    Energy Technology Data Exchange (ETDEWEB)

    Gajdzik, M.; Suergers, C. E-mail: christoph.suergers@physik.uni-karlsruhe.de; Kelemen, M.T.; Loehneysen, H. von

    2000-11-01

    The structural and magnetic properties of Mn{sub 5}Ge{sub 3}C{sub x} films prepared at elevated substrate temperatures T{sub S} are investigated. In particular, films with x{>=}0.5 and T{sub S}=680 K exhibit a strongly enhanced Curie temperature T{sub C}=445 K compared to bulk Mn{sub 5}Ge{sub 3} with T{sub C}=304 K while at the same time the average Mn moment decreases from 2.6 to 1 {mu}{sub B}. Structural analysis of these films suggests that the carbon is interstitially incorporated into the voids of Mn octahedra of the hexagonal Mn{sub 5}Si{sub 3}-type structure giving rise to a lattice compression. The enhanced ferromagnetic stability in connection with the lattice compression is interpreted in terms of an Mn-Mn interaction mediated by C based on a change in the electronic structure.

  6. Redefining the Poet as Healer: Valerie Gillies's Collaborative Role in the Edinburgh Marie Curie Hospice Quiet Room Project.

    Science.gov (United States)

    Severin, Laura

    2015-01-01

    This article examines the poetic contribution of Valerie Gillies, Edinburgh Makar (or poet of the city) from 2005-2008, to the Edinburgh Marie Curie Hospice Quiet Room, a new contemplation space for patients, families, and staff. In collaboration with others, Gillies created a transitional space for the Quiet Room, centered on the display of her sonnet, "A Place Apart." This space functions to comfort visitors to the Quiet Room by relocating them in their surroundings and offering the solace provided by nature and history. With this project, her first as Edinburgh Makar, Gillies redefines the role of the poet as healer and advocates for newer forms of palliative care that focus on patients' spiritual and emotional, as well as physical, wellbeing.

  7. Introduction to the EC's Marie Curie Initial Training Network (MC-ITN) project: Particle Training Network for European Radiotherapy (PARTNER)

    CERN Document Server

    Dosanjh, Manjit

    2013-01-01

    PARTNER (Particle Training Network for European Radiotherapy) is a project funded by the European Commission’s Marie Curie-ITN funding scheme through the ENLIGHT Platform for 5.6 million Euro. PARTNER has brought together academic institutes, research centres and leading European companies, focusing in particular on a specialized radiotherapy (RT) called hadron therapy (HT), interchangeably referred to as particle therapy (PT). The ultimate goal of HT is to deliver more effective treatment to cancer patients leading to major improvement in the health of citizens. In Europe, several hundred million Euro have been invested, since the beginning of this century, in PT. In this decade, the use of HT is rapidly growing across Europe, and there is an urgent need for qualified researchers from a range of disciplines to work on its translational research. In response to this need, the European community of HT, and in particular 10 leading academic institutes, research centres, companies and small and medium-sized en...

  8. Curie temperature of GaMnN and GaMnAs from LDA-SIC electronic structure calculations

    Energy Technology Data Exchange (ETDEWEB)

    Toyoda, Masayuki; Sato, Kazunori; Katayama-Yoshida, Hiroshi [Department of Computational Nanomaterials Design, Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan); Akai, Hisazumi [Department of Physics, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043 (Japan)

    2006-07-01

    We present the electronic structures, magnetic exchange interactions and Curie temperature (T{sub C}) of GaMnN and GaMnAs calculated by self-interaction-corrected local-density approximation (LDA-SIC). In GaMnAs, the LDA-SIC results of T{sub C} do not differ so much from the LDA results. Both the LDA and LDA-SIC values are in a good agreement with the experimental data. In GaMnN, on the other hand, the ferromagnetic exchange interactions are enhanced due to the suppression of antiferromagnetic super-exchange interaction, resulting in T{sub C} higher than the LDA results. (copyright 2006 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  9. Coordinating talk and practical action

    DEFF Research Database (Denmark)

    Oshima, Sae; Streeck, Jürgen

    2015-01-01

    . Our analysis of four examples reveals that there is no fixed relationship between the organization of talk and practical action. Instead, people manipulate this relationship on a moment-by-moment basis, often coordinating the two into a single, integral package, or relying on one stream of action...

  10. People's Olympics

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ It is the moment the city takes on its young and beautiful look.It is the moment the people do everything to surprise the world.It is the momcnt the whole country hold the breath.The 29th Olympic Games is approaching in Beijing.

  11. Action physics

    Science.gov (United States)

    McGinness, Lachlan P.; Savage, C. M.

    2016-09-01

    More than a decade ago, Edwin Taylor issued a "call to action" that presented the case for basing introductory university mechanics teaching around the principle of stationary action [E. F. Taylor, Am. J. Phys. 71, 423-425 (2003)]. We report on our response to that call in the form of an investigation of the teaching and learning of the stationary action formulation of physics in a first-year university course. Our action physics instruction proceeded from the many-paths approach to quantum physics to ray optics, classical mechanics, and relativity. Despite the challenges presented by action physics, students reported it to be accessible, interesting, motivational, and valuable.

  12. Complementary Actions

    Directory of Open Access Journals (Sweden)

    Luisa eSartori

    2015-05-01

    Full Text Available Complementary colors are color pairs which, when combined in the right proportions, produce white or black. Complementary actions refer here to forms of social interaction wherein individuals adapt their joint actions according to a common aim. Notably, complementary actions are incongruent actions. But being incongruent is not sufficient to be complementary (i.e., to complete the action of another person. Successful complementary interactions are founded on the abilities: (i to simulate another person’s movements, (ii to predict another person’s future action/s, (iii to produce an appropriate incongruent response which differ, while interacting, with observed ones, and (iv to complete the social interaction by integrating the predicted effects of one’s own action with those of another person. This definition clearly alludes to the functional importance of complementary actions in the perception–action cycle and prompts us to scrutinize what is taking place behind the scenes. Preliminary data on this topic have been provided by recent cutting-edge studies utilizing different research methods. This mini-review aims to provide an up-to-date overview of the processes and the specific activations underlying complementary actions.

  13. Management of malignant phyllode tumors of the breast: the experience of the Institut Curie; Prise en charge des tumeurs phyllodes malignes du sein: l'experience de l'Institut Curie

    Energy Technology Data Exchange (ETDEWEB)

    Haberer, S.; Kirova, Y.M.; Dendale, R.; Campana, F.; Miranda, O.; Fourquet, A.; Bollet, M.A. [Institut Curie, Dept. de Radiotherapie Oncologique, 75 - Paris (France); Lae, M. [Institut Curie, Dept. de Biologie des Tumeurs, 75 - Paris (France); Seegers, V. [Institut Curie, Dept. de Biostatistiques, 75 - Paris (France); Pierga, J.Y. [Institut Curie, Dept. d' Oncologie Medicale, 75 - Paris (France); Salmon, R.; Reyal, F. [Institut Curie, Dept. de Chirurgie, 75 - Paris (France)

    2009-07-15

    Purpose Given the scarcity of malignant phyllode tumours of the breast and the absence of consensus regarding their management justify the need for institutional retrospective evaluations of clinical practices. Patients and methods Retrospective study with central pathology review of the 25 consecutive patients treated at the Institut Curie (Paris, France) between 1969 and 2006 for non metastatic malignant phyllodes tumors of the breast. The median follow-up was 65 months (7-257 months). Results Median age at diagnosis was 52 years (20-64 years). Breast surgery was conservative in five patients (20%). Surgical margins were wide (> 10 mm), narrow, involved or unknown in respectively 17 (68%), three (12%), three (12%) and two (8%) patients. Median tumour size was 65 mm (12-250 mm). Adjuvant radiotherapy was delivered in seven (28%) patients (two patients, post tumor-ectomy; five patients, post mastectomy) and 13 patients (52%) received anthracycline-based adjuvant chemotherapy. Five-year overall survival rate was 91% (95% CI, 80-100%). Five patients (20%) developed distant metastases (one after chemotherapy) and three (12%) locoregional relapse (one after tumor-ectomy and unknown margin without radiotherapy, two after mastectomy and involved margins with radiotherapy). Conclusion Wide breast surgery (that can be conservative in selected patients) is the mainstay of the treatment of non metastatic malignant phyllodes tumors of the breast. To better determine the respective roles of adjuvant systemic treatment and radiotherapy, further clinical studies and the search for new prognostic and predictive factors remain necessary. (authors)

  14. PEOPLE & POINTS

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Rocking the 'Cross-Strait' Boat Just as people thought that crossstrait tensions couldn't get any more testy amid Taiwan leader Chen Shui-bian's efforts to hinder the development of cross-strait ties between the mainland and the island, they did when Chen stumbled upon a new secession drive. Chen announced February 27 his decision to terminate the "National Unification Council" and scrap the

  15. PEOPLE & POINTS

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Held Hostage by Politicized Pandas Giant pandas became the preferred option when the Communist Party of China, on behalf of the people on China's mainland, considered sending a gift of goodwill to Taiwan during former Kuomintang Chairman Lien Chan's 2005 cross-strait visit. But Taiwan leader Chen Shui-bian said his authorities would rather not give the pandas permission to enter the island, citing

  16. PEOPLE & POINTS

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Innovated In China Deng Zhonghan, the 37-year-old co-founder and CEO of Beijing-based chips manufacturer Vimicro Corporation, walked away with top honors in an annual selection of business people of the year sponsored by national broadcaster China Central Television (CCTV). Deng's pocketing of the prestigious honors in China's business world came as no surprise since his company's breakthroughs in developing chips with proprietary intellectual property in China perfectly matches the key selection criteri...

  17. PEOPLE & POINTS

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Thai Premier Under Fire Central Bangkok buzzed with discontent March 14. Tens of thousands of protestors marched from the city's royal plaza down toward the office of Prime Minister Thaksin Shinawatra, where they held an all-night rally and put the seat of government under virtual siege. Organizers claimed that close to 200,000 people joined the protest demanding the resignation of Thaksin. The demonstration was one of the largest since corruption charges were levied

  18. Rethinking actions: implementation and association.

    Science.gov (United States)

    Quandt, Lorna C; Chatterjee, Anjan

    2015-01-01

    Action processing allows us to move through and interact with the world, as well as understand the movements performed by other people. In recent years, there has been increasing interest in the semantics of actions as differentiated from the semantics of objects. However, as the understanding of action semantics has evolved, it is evident that the existing literature conflates two senses of the word 'action'-one that stems from studies of tool use and the other from event representation. In this paper, we suggest that this issue can be clarified by closely examining differences in how the human parietal and temporal cortices of the brain process action-related stimuli. By contrasting the posterior parietal cortex to the posterolateral temporal cortex, we characterize two complementary action systems in the human brain, each with its own specialization of function. We suggest that these two systems be referred to as the parietal Action Implementation System, and the posterolateral temporal Action Association System. While the frontoparietal system is concerned primarily with how we perform actions, and simulate others' actions, the temporal action system is more involved with processing actions from a third-person, conceptual standpoint. Recent work in cognitive neuroscience of perception and language, as well as the neuroanatomical organization of these brain regions support this distinction. We will discuss the implications of this work for cognition-, language-, and neuroscience-based action research. © 2015 Wiley Periodicals, Inc.

  19. Low-temperature dynamics of the Curie-Weiss Model: Periodic orbits, multiple histories, and loss of Gibbsianness

    CERN Document Server

    Ermolaev, Victor

    2010-01-01

    We consider the Curie-Weiss model at a given initial temperature in vanishing external field evolving under a Glauber spin-flip dynamics corresponding to a possibly different temperature. We study the limiting conditional probabilities and their continuity properties and discuss their set of points of discontinuity (bad points). We provide a complete analysis of the transition between Gibbsian and non-Gibbsian behavior as a function of time, extending earlier work for the case of independent spin-flip dynamics. For initial temperature bigger than one we prove that the time-evolved measure stays Gibbs forever, for any (possibly low) temperature of the dynamics. In the regime of heating to low-temperatures from even lower temperatures, when the initial temperature is smaller than the temperature of the dynamics, and smaller than 1, we prove that the time-evolved measure is Gibbs initially and becomes non-Gibbs after a sharp transition time. We find this regime is further divided into a region where only symmetr...

  20. Magnetocaloric effect in heavy rare-earth elements doped Fe-based bulk metallic glasses with tunable Curie temperature

    Energy Technology Data Exchange (ETDEWEB)

    Li, Jiawei; Huo, Juntao; Chang, Chuntao, E-mail: ctchang@nimte.ac.cn, E-mail: dujun@nimte.ac.cn; Du, Juan, E-mail: ctchang@nimte.ac.cn, E-mail: dujun@nimte.ac.cn; Man, Qikui; Wang, Xinmin; Li, Run-Wei [Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201 (China); Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201 (China); Law, Jiayan [Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)

    2014-08-14

    The effects of heavy rare earth (RE) additions on the Curie temperature (T{sub C}) and magnetocaloric effect of the Fe-RE-B-Nb (RE = Gd, Dy and Ho) bulk metallic glasses were studied. The type of dopping RE element and its concentration can easily tune T{sub C} in a large temperature range of 120 K without significantly decreasing the magnetic entropy change (ΔS{sub M}) and refrigerant capacity (RC) of the alloys. The observed values of ΔS{sub M} and RC of these alloys compare favorably with those of recently reported Fe-based metallic glasses with enhanced RC compared to Gd{sub 5}Ge{sub 1.9}Si{sub 2}Fe{sub 0.1}. The tunable T{sub C} and large glass-forming ability of these RE doped Fe-based bulk metallic glasses can be used in a wide temperature range with the final required shapes.

  1. Estimation of Curie temperature of manganite-based materials for magnetic refrigeration application using hybrid gravitational based support vector regression

    Science.gov (United States)

    Owolabi, Taoreed O.; Akande, Kabiru O.; Olatunji, Sunday O.; Alqahtani, Abdullah; Aldhafferi, Nahier

    2016-10-01

    Magnetic refrigeration (MR) technology stands a good chance of replacing the conventional gas compression system (CGCS) of refrigeration due to its unique features such as high efficiency, low cost as well as being environmental friendly. Its operation involves the use of magnetocaloric effect (MCE) of a magnetic material caused by application of magnetic field. Manganite-based material demonstrates maximum MCE at its magnetic ordering temperature known as Curie temperature (TC). Consequently, manganite-based material with TC around room temperature is essentially desired for effective utilization of this technology. The TC of manganite-based materials can be adequately altered to a desired value through doping with appropriate foreign materials. In order to determine a manganite with TC around room temperature and to circumvent experimental challenges therein, this work proposes a model that can effectively estimates the TC of manganite-based material doped with different materials with the aid of support vector regression (SVR) hybridized with gravitational search algorithm (GSA). Implementation of GSA algorithm ensures optimum selection of SVR hyper-parameters for improved performance of the developed model using lattice distortions as the descriptors. The result of the developed model is promising and agrees excellently with the experimental results. The outstanding estimates of the proposed model suggest its potential in promoting room temperature magnetic refrigeration through quick estimation of the effect of dopants on TC so as to obtain manganite that works well around the room temperature.

  2. Estimation of Curie temperature of manganite-based materials for magnetic refrigeration application using hybrid gravitational based support vector regression

    Directory of Open Access Journals (Sweden)

    Taoreed O. Owolabi

    2016-10-01

    Full Text Available Magnetic refrigeration (MR technology stands a good chance of replacing the conventional gas compression system (CGCS of refrigeration due to its unique features such as high efficiency, low cost as well as being environmental friendly. Its operation involves the use of magnetocaloric effect (MCE of a magnetic material caused by application of magnetic field. Manganite-based material demonstrates maximum MCE at its magnetic ordering temperature known as Curie temperature (TC. Consequently, manganite-based material with TC around room temperature is essentially desired for effective utilization of this technology. The TC of manganite-based materials can be adequately altered to a desired value through doping with appropriate foreign materials. In order to determine a manganite with TC around room temperature and to circumvent experimental challenges therein, this work proposes a model that can effectively estimates the TC of manganite-based material doped with different materials with the aid of support vector regression (SVR hybridized with gravitational search algorithm (GSA. Implementation of GSA algorithm ensures optimum selection of SVR hyper-parameters for improved performance of the developed model using lattice distortions as the descriptors. The result of the developed model is promising and agrees excellently with the experimental results. The outstanding estimates of the proposed model suggest its potential in promoting room temperature magnetic refrigeration through quick estimation of the effect of dopants on TC so as to obtain manganite that works well around the room temperature.

  3. Introduction to the EC's Marie Curie Initial Training Network (MC-ITN) project: Particle Training Network for European Radiotherapy (PARTNER).

    Science.gov (United States)

    Dosanjh, Manjit; Magrin, Giulio

    2013-07-01

    PARTNER (Particle Training Network for European Radiotherapy) is a project funded by the European Commission's Marie Curie-ITN funding scheme through the ENLIGHT Platform for 5.6 million Euro. PARTNER has brought together academic institutes, research centres and leading European companies, focusing in particular on a specialized radiotherapy (RT) called hadron therapy (HT), interchangeably referred to as particle therapy (PT). The ultimate goal of HT is to deliver more effective treatment to cancer patients leading to major improvement in the health of citizens. In Europe, several hundred million Euro have been invested, since the beginning of this century, in PT. In this decade, the use of HT is rapidly growing across Europe, and there is an urgent need for qualified researchers from a range of disciplines to work on its translational research. In response to this need, the European community of HT, and in particular 10 leading academic institutes, research centres, companies and small and medium-sized enterprises, joined together to form the PARTNER consortium. All partners have international reputations in the diverse but complementary fields associated with PT: clinical, radiobiological and technological. Thus the network incorporates a unique set of competencies, expertise, infrastructures and training possibilities. This paper describes the status and needs of PT research in Europe, the importance of and challenges associated with the creation of a training network, the objectives, the initial results, and the expected long-term benefits of the PARTNER initiative.

  4. CIENTISTAS EM REVISTA: EINSTEIN, DARWIN E MARIE CURIE NA CIÊNCIA HOJE DAS CRIANÇAS

    Directory of Open Access Journals (Sweden)

    Sheila Alves de Almeida

    Full Text Available RESUMO: Este trabalho analisou três edições da revista Ciência Hoje das Crianças, em que Einstein, Darwin e Marie Curie são apresentados. Frente ao desafio de divulgar a vida e a obra desses cientistas de forma adequada às crianças, para análise dos artigos consideramos a linguagem utilizada, as imagens apresentadas e, principalmente, a representação da revista sobre os cientistas. A metodologia de análise do material é inspirada nos trabalhos de Bakhtin sobre dialogismo e na compreensão por meio dos procedimentos discursivos, verbais e visuais com que a revista interpela e dialoga com as crianças. Os resultados mostram que a chancela editorial opta por focar a infância dos cientistas e uma imagem do cientista curioso e aventureiro. Entretanto, veicula-se nos artigos analisados uma visão estereotipada do cientista como alguém que já se anunciava cientista. Reitera-se a importância da Ciência Hoje das Crianças para a promoção da leitura e a democratização da linguagem de divulgação científica para crianças.

  5. Large deviations of the finite-time magnetization of the Curie-Weiss random-field Ising model

    Science.gov (United States)

    Paga, Pierre; Kühn, Reimer

    2017-08-01

    We study the large deviations of the magnetization at some finite time in the Curie-Weiss random field Ising model with parallel updating. While relaxation dynamics in an infinite-time horizon gives rise to unique dynamical trajectories [specified by initial conditions and governed by first-order dynamics of the form mt +1=f (mt) ] , we observe that the introduction of a finite-time horizon and the specification of terminal conditions can generate a host of metastable solutions obeying second-order dynamics. We show that these solutions are governed by a Newtonian-like dynamics in discrete time which permits solutions in terms of both the first-order relaxation ("forward") dynamics and the backward dynamics mt +1=f-1(mt) . Our approach allows us to classify trajectories for a given final magnetization as stable or metastable according to the value of the rate function associated with them. We find that in analogy to the Freidlin-Wentzell description of the stochastic dynamics of escape from metastable states, the dominant trajectories may switch between the two types (forward and backward) of first-order dynamics. Additionally, we show how to compute rate functions when uncertainty in the quenched disorder is introduced.

  6. Using Action Learning to Consolidate Coaching Skills

    Science.gov (United States)

    Norman, Clare; Powell, Anne

    2004-01-01

    This article aims to answer the questions: (1) How can action learning aid in strategic change?; (2) What are the benefits of using action learning as part of a broader learning intervention?; (3) What are the issues to consider when introducing action learning into a corporate environment?; and (4) How can you engage people in reflection as a…

  7. Theater and action research

    DEFF Research Database (Denmark)

    Tofteng, Ditte Maria Børglum; Husted, Mia

    2011-01-01

    difficulties reaching the public agenda or influencing structures of power. In this article we follow the creation of a play and of scenes that address the life, sufferings, and wishes of unemployed people. The skills of actors, writers, and producers are worked into a critical utopian action research project...... and used to highlight and enlarge both critique and dreams in life outside the labor market. The article also discusses some of the reactions the plays received and the formation of knowledge linked to these processes.......Action research on marginalization and exclusion often seeks to examine relations between recognition, respect, and inclusion, but addressing these topics is difficult. Theatre-based action research opens up a new way to communicate and make visible knowledge and experiences from below that have...

  8. Knowledge into Action

    DEFF Research Database (Denmark)

    Larsen, Lars Thorup

    between health knowledge and individual action. The book investigates what political rationality characterizes this new ambition in public health policies to put knowledge into action in the hands of individual citizens and how these policies adapt to the continuous experience that citizens often do...... not listen. Based on a Foucauldian framework, the genealogy demonstrates the new governmentality in Danish and American public health policy, which depends upon a specific politics of truth. Not only does public health policy build on a large amount of scientific knowledge. It also demands a change...... in the production and circulation of health knowledge, which attempts to replace the usual 'ifs, buts and maybes' of medical science with an action-minded public health knowledge just telling people what to do....

  9. Preoperative concomitant radio chemotherapy in bulky carcinoma of the cervix: Institut Curie experience; Chimioradiotherapie concomitante preoperatoire dans les carcinomes du col uterin de stades IB2 a IIB: experience de l'Institut Curie

    Energy Technology Data Exchange (ETDEWEB)

    Kirova, Y.M.; Bourhaleb, Z.; Campitelli, M.; De la Rochefordiere, A. [Institut Curie, Groupe de Gynecologie, Service d' Oncologie et de Radiotherapie, 75 - Paris (France); Alran, S.; Fourchotte, V. [Institut Curie, Groupe de Gynecologie, Service de Chirurgie, 75 - Paris (France); Plancher, C. [Institut Curie, Groupe de Gynecologie, Service de Biostatistique, 75 - Paris (France); Beuzeboc, P.; Cottu, P. [Institut Curie, Groupe de Gynecologie, Service d' Oncologie Medicale, 75 - Paris (France); Petrow, P. [Institut Curie, Groupe de Gynecologie, Service de Radiologie, 75 - Paris (France); Cremoux, P. de; Sastre-Garau, X. [Institut Curie, Groupe de Pathologie, Service de Radiologie, 75 - Paris (France)

    2009-07-15

    Purpose: To evaluate the treatment results of patients (pts) with Figo stage IB2, IIA, IIB cervical carcinoma (C.C.) treated with preoperative radio chemotherapy, followed by extended radical hysterectomy. Patients and methods: Retrospective study of 148 women treated to the Curie Institute for operable Figo Stage IB2 to IIB, biopsy proved C.C.. Among them, 70 pts, median age 46 years, were treated using the same regimen associating primary radio cis-platinum based chemotherapy,intracavitary LDR brachytherapy, followed by extended radical hysterectomy. Kaplan-Meier estimates were used to draw survival curves. Comparisons of survival distribution were assessed by the log-rank test. Results: Complete histological local-regional response was obtained in 56% of the pts (n = 39). Residual macroscopic or microscopic disease in the cervix was observed in 28 pts (40%). All but one had in situ microscopic residual C.C.. Lateral residual disease in the parametria was also present in nine pts, all with residual C.C.. Pelvic lymph nodes were free from microscopic disease in 56 pts (80%). Eight of 55 (11%) radiological N0 patients had microscopic nodal involvement, as compared to 6/15 (40%) radiological N1 (p = 0.03). Seventeen pts (25%) had residual cervix disease but negative nodes. After median follow-up of 40 months (range, 8-141), 38/70 patients (54.1%) are still alive and free of disease, six (8.6%) alive with disease, and 11 (15.8%) patients were lost for follow-up but free of disease. Conclusion: The treatment of locally advanced C.C. needs a new multidisciplinary diagnostic and treatment approach using new therapeutic arms to improve the survival and treatment tolerance among women presenting this disease. (authors)

  10. Lessons learnt from Volcanoes' Night I-II-III - a Marie Curie Researchers' Night project series dedicated to geosciences

    Science.gov (United States)

    Cseko, Adrienn; Bodo, Balazs; Ortega Rodriguez, Ariadna

    2017-04-01

    Assessment Report was submitted to the EC after the conclusion of each of the three projects. According to an on-site survey undertaken in 2015, 78.5% of responders reported that their initial understanding of the work of geoscientists improved as a result of the activities organised during the event. The conclusions from the Impact Assessment studies can be used to synthesise methodological recommendations for other organisations that may consider the organisation of similar public outreach actions for geosciences in the future. Scientific experiments are most efficient to raise interest if they are designed for direct engagement with the public so participants can participate in the experiments themselves as opposed to being simple observers. Scientific talks should always include a good level of interaction with the public, for example integrated experiments, quizzes, and real-time surveys. Edutainment options should be finalised in agreement with the audience so that the most interesting ones are selected - this is especially important to create meaningful engagement with young people. The definition of the scope of activities in a way that allows for the inclusion of interdisciplinary subjects (e.g. the intersection of geoscience and robotics) can raise the interest of an even greater public community.

  11. Effect of pressure on the Curie temperature of Mn{sub 2}RuSn and Mn{sub 2}PdSn

    Energy Technology Data Exchange (ETDEWEB)

    Adachi, Y., E-mail: adachy@yz.yamagata-u.ac.jp [Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510 (Japan); Watanabe, T. [Faculty of Engineering, Yamagata University, Yonezawa 992-8510 (Japan); Kanomata, T. [Faculty of Engineering, Tohoku Gakuin University, Tagajo 985-8537 (Japan); Research Institute for Engineering and Technology, Tohoku Gakuin University, 985-8537 (Japan); Hayasaka, M.; Endo, K. [Faculty of Engineering, Tohoku Gakuin University, Tagajo 985-8537 (Japan); Nishihara, H. [Faculty of Science and Technology, Ryukoku University, Otsu 520-2194 (Japan); Xu, X.; Kainuma, R. [Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579 (Japan)

    2017-04-15

    Effect of pressure on the Curie temperature T{sub C} of the Mn-rich Heusler alloys Mn{sub 2}RuSn and Mn{sub 2}PdSn has been investigated by measuring the temperature dependence of initial permeability at various pressures up to 10 kbar. It was found that the Curie temperatures of Mn{sub 2}RuSn and Mn{sub 2}PdSn decrease with increasing pressure. The pressure derivatives of T{sub C} were estimated to be −0.59 K/kbar for Mn{sub 2}RuSn and −0.80 K/kbar for Mn{sub 2}PdSn. On the basis of the experimental results, the relationship between the magnetic transition temperature and the Mn-Mn distance is discussed.

  12. Introduction to the EC's Marie Curie Initial Training Network project: The European training network in digital medical imaging for radiotherapy (ENTERVISION

    Directory of Open Access Journals (Sweden)

    Manjit eDosanjh

    2015-12-01

    Full Text Available Between 2011 and 2015, the ENTERVISION Marie Curie Initial Training Network has been training 15 young researchers coming from a variety of backgrounds on topics ranging from in-beam Positron Emission Tomography or Single Particle Tomography techniques, to adaptive treatment planning, optical imaging, Monte Carlo simulations, biological phantom design. This article covers the main research activities, as well as the training scheme implemented by the participating institutes, which included academia, research, and industry.

  13. Estimating the Curie point depth using aeromagnetic data with a fractal model in the Province of Québec, eastern Canada

    Science.gov (United States)

    Drolet, Jean-Philippe; Giroux, Bernard; Bouligand, Claire

    2017-04-01

    New technologies that allow geothermal energy production in colder conditions result in interest for geothermal exploration in low heat flux regions that were previously overlooked. The Province of Québec, eastern Canada, is such a case. It is a large and cold area with a low amount of heat flux measurements, and mapping the Curie point depth is appealing as an exploration tool due to the scarcity of the direct data. For that purpose, we have revisited a methodology to estimate the Curie point depth using a fractal source distribution model and aeromagnetic data. Our methodology relies on a statistical model of crustal magnetization having a constant magnetization direction and random magnetization amplitude. The shape of the radial average of the logarithm of the power spectrum of magnetic anomalies is predicted using this model. The model parameters (thickness and depth to the top of the magnetic layer, the fractal exponent β and the constant C') are obtained by calculating the best fit between the theoretical and observed radial power spectra using a non-linear least-square algorithm. Rather than using a constant value for the fractal exponent β over the whole study area, which would overcorrect the shape of the radially averaged power spectra in some zones, we propose a new calibration workflow based on heat flux measurements and lithology. This workflow includes the use of sequential Gaussian simulations (SGS) of heat flux data to enlarge the limited available dataset. The use of SGS also allows quantifying the uncertainty and the range of the predicted Curie point depths. This work contributes to mapping the Curie point depth at large scale and help identifying potential areas for further detailed exploration programs and potential geothermal energy production in the Province of Québec.

  14. Introduction to the EC's Marie Curie Initial Training Network Project: The European Training Network in Digital Medical Imaging for Radiotherapy (ENTERVISION).

    Science.gov (United States)

    Dosanjh, Manjit; Cirilli, Manuela; Navin, Sparsh

    2015-01-01

    Between 2011 and 2015, the ENTERVISION Marie Curie Initial Training Network has been training 15 young researchers from a variety of backgrounds on topics ranging from in-beam Positron Emission Tomography or Single Particle Tomography techniques, to adaptive treatment planning, optical imaging, Monte Carlo simulations and biological phantom design. This article covers the main research activities, as well as the training scheme implemented by the participating institutes, which included academia, research, and industry.

  15. Introduction to the EC’s Marie Curie Initial Training Network Project: The European Training Network in Digital Medical Imaging for Radiotherapy (ENTERVISION)

    Science.gov (United States)

    Dosanjh, Manjit; Cirilli, Manuela; Navin, Sparsh

    2015-01-01

    Between 2011 and 2015, the ENTERVISION Marie Curie Initial Training Network has been training 15 young researchers from a variety of backgrounds on topics ranging from in-beam Positron Emission Tomography or Single Particle Tomography techniques, to adaptive treatment planning, optical imaging, Monte Carlo simulations and biological phantom design. This article covers the main research activities, as well as the training scheme implemented by the participating institutes, which included academia, research, and industry. PMID:26697403

  16. Magnetization and magnetic entropy change of a three-dimensional isotropic ferromagnet near the Curie temperature in the random phase approximation

    Energy Technology Data Exchange (ETDEWEB)

    Kokorina, E.E., E-mail: kokorina@iep.uran.ru [Institute of Electrophysics, Russian Academy of Sciences-Ural Division, 620016 Ekaterinburg (Russian Federation); Medvedev, M.V. [Institute of Electrophysics, Russian Academy of Sciences-Ural Division, 620016 Ekaterinburg (Russian Federation); Department of Theoretical Physics, Ural Federal University, 620083 Ekaterinburg (Russian Federation)

    2013-05-01

    The behavior of a three-dimensional isotropic Heisenberg ferromagnet in the presence of a magnetic field H is investigated in the random phase approximation (RPA) near the Curie temperature T{sub c}. It is shown that the magnetization M at the Curie temperature T{sub c} is described by the law M(T=T{sub c})∼H{sup 1/5} and the initial magnetic susceptibility χ{sub 0} at temperatures T≥T{sub c} is given by χ{sub 0}(T≥T{sub c})∼(T−T{sub c}){sup −2}. It means that in the RPA the critical exponents for a three-dimensional Heisenberg ferromagnet coincide with the critical exponents for the Berlin-Kac spherical model of a ferromagnet rather than with the critical exponents of the mean field approximation (MFA). Hence it follows as well that, when a magnetic field H is risen from H=0 to H=H{sub a}, the magnetic entropy S{sub M} will be decreased as ΔS{sub M}(T=T{sub c})∼−H{sub a}{sup 4/5} at the Curie temperature T{sub c} and as ΔS{sub M}(T>T{sub c})∼−(T−T{sub c}){sup −3}H{sub a}{sup 2} at temperatures T>T{sub c}.

  17. Structure, electrical properties of Bi(Fe, Co)O3-BaTiO3 piezoelectric ceramics with improved Curie temperature

    Science.gov (United States)

    Zhou, Changrong; Cen, Zhenyong; Yang, Huabin; Zhou, Qin; Li, Weizhou; Yuan, Changlai; Wang, Hua

    2013-02-01

    Dense (1-y)BiFe1-xCoxO3-yBaTiO3 (BFC-BTx, y=0.29, x=0-0.012) high-temperature lead-free ceramics were prepared by the conventional oxide-mixed method and the effects of BiCoO3 modification on microstructural, electrical properties and their Curie temperatures were investigated. The solid solutions show a single phase perovskite structure, and the content of BiCoO3 has a significant effect on the microstructure of ceramics. The BFC-BTx ceramics exhibit improved Curie temperature Tc, together with increased piezoelectric properties. In particular, x=0.6% BFC-BTx ceramics, with a Curie temperature, Tc, of ∼488 °C, show optimum piezoelectric properties of d33=167 pC/N, kp=0.32. The combination of good piezoelectric properties and high Tc makes these ceramics suitable for elevated temperature piezoelectric devices.

  18. Structure, electrical properties of Bi(Fe, Co)O{sub 3}-BaTiO{sub 3} piezoelectric ceramics with improved Curie temperature

    Energy Technology Data Exchange (ETDEWEB)

    Zhou Changrong, E-mail: zcr750320@yahoo.com.cn [School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004 (China); Cen Zhenyong [School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004 (China); Yang Huabin [School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004 (China); School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083 (China); Zhou Qin [School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004 (China); Li Weizhou [School of Materials Science and Engineering, Guangxi University, Nanning, Guangxi 530004 (China); Yuan Changlai; Wang Hua [School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004 (China)

    2013-02-01

    Dense (1-y)BiFe{sub 1-x}Co{sub x}O{sub 3}-yBaTiO{sub 3} (BFC-BTx, y=0.29, x=0-0.012) high-temperature lead-free ceramics were prepared by the conventional oxide-mixed method and the effects of BiCoO{sub 3} modification on microstructural, electrical properties and their Curie temperatures were investigated. The solid solutions show a single phase perovskite structure, and the content of BiCoO{sub 3} has a significant effect on the microstructure of ceramics. The BFC-BTx ceramics exhibit improved Curie temperature T{sub c}, together with increased piezoelectric properties. In particular, x=0.6% BFC-BTx ceramics, with a Curie temperature, T{sub c}, of {approx}488 Degree-Sign C, show optimum piezoelectric properties of d{sub 33}=167 pC/N, k{sub p}=0.32. The combination of good piezoelectric properties and high T{sub c} makes these ceramics suitable for elevated temperature piezoelectric devices.

  19. Forearc structure in the Lesser Antilles inferred from depth to the Curie temperature and thermo-mechanical simulations

    Science.gov (United States)

    Gailler, Lydie; Arcay, Diane; Münch, Philippe; Martelet, Guillaume; Thinon, Isabelle; Lebrun, Jean-Frédéric

    2017-06-01

    Imaging deep active volcanic areas remains a challenge in our understanding of their activity and evolution, especially in subduction zones. Study of magnetic anomalies is appropriate to access such dynamics in depth. The magnetic anomaly pattern of the Lesser Antilles Arc (LAA) subduction is studied through Curie Point Depth (CPD), interpreted as the depth of the 580 °C isotherm, and developed to better assess the deep thermal structure of the arc. The depth of the estimated CPD exhibits a complex topography. Keeping in mind the overall uncertainty associated with this method, a main doming is evidenced below the Guadeloupe archipelago. Its apex is shifted towards the ancient arc, suggesting a very hot state of the fore-arc/arc domain. To better understand the LAA thermal state, we perform 2D thermo-mechanical simulations of the subduction zone. Recalling that magnetite is a serpentinization by-product, we simulate water transfer triggered by slab dehydration to test the assumption of fore-arc serpentinization suggested by the positive magnetic anomaly in the vicinity of the Guadeloupe archipelago. In this area, the subduction-induced arc lithosphere hydration and related weakening trigger a fast heating of the upper plate by basal convective removal. This process of fast arc lithosphere thinning may apply where simultaneously the volcanic arc is split in two and normal convergence is high enough. As serpentinization strongly decreases P-wave velocity, we propose a new interpretation of a published seismic profile below Guadeloupe. The seismic layer previously interpreted as the arc lower crust may rather be a layer of serpentinized mantle, as supported by spatial correlations between gravimetric and magnetic anomalies. Consequently, at the scale of Guadeloupe Island, the fore-arc Moho would be shallower than initially assumed, with a dome shape more consistent with both the extensive deformation active since the Oligocene in the inner fore-arc and the CPD doming.

  20. Engineering of the Curie temperature of epitaxial Sr1-xBaxTiO3 films via strain

    Science.gov (United States)

    Dai, Y.; Schubert, J.; Hollmann, E.; Mussler, G.; Wördenweber, R.

    2016-09-01

    The impact of strain on the structural and electrical properties of epitaxial Sr1-xBaxTiO3 films grown on single crystalline DyScO3 (110), TbScO3 (110), and GdScO3 (110) substrates is presented. X-ray diffraction measurements demonstrate that all films are grown epitaxially. The tensile in-plane strain is only partially compensated by a contraction of the out-of-plane lattice parameter. As a result, the volume of the unit cell of the Sr1-xBaxTiO3 film increases due to the tensile strain, and the resulting Poisson ratio of the film is ν ≈ 0.33, which is larger than but still close to the literature values of ν ≈ 0.23 for unstrained defect-free SrTiO3. The Curie temperature derived from the temperature dependence of the in-plane dielectric response leads to a strain-temperature phase diagram for the epitaxial Sr1-xBaxTiO3 films. The experimental data show a deviation from the linear dependence predicted by the Landau thermodynamic theory for large strain (>1.2%). However, using the equilibrium thermodynamic analysis, we can demonstrate that this deviation arises from the relaxation of the strain due to defect formation in the film. The result reveals that in addition to the nominal misfit strain, the defect formation strongly affects the effective strain and, thus, the dielectric response of epitaxially grown ferroelectric films.

  1. Report on the Workshop and Regular Meeting of the Imode-CKD and Bcmolmed Marie Curie Training and Research Programs.

    Science.gov (United States)

    Krochmal, Magdalena; Cisek, Katryna; Markoska, Katerina; Spasovski, Goce; Vlahou, Antonia

    2015-01-01

    A Workshop and Regular Meeting of the Marie Curie Training and Research Programs iMODECKD (Identification of the Molecular Determinants of established Chronic Kidney Disease) and BCMolMed (Molecular Medicine for Bladder Cancer) was held from 20-22 March at the Macedonian Academy of Science and Arts (MASA). The meeting was hosted by the participating center University of Skopje (SKO) - Goce Spasovski and MASA - Momir Polenakovic (R. Macedonia). The representative from MASA proteomic research center - Katerina Davalieva (R. Macedonia) had presentation on proteomic research in prostate cancer (PCa). 40 researchers from 13 different countries participated at the meeting. The Workshop was devoted on "Chronic Kidney Disease: Clinical Management issues", and consisted of 15 oral presentations given by nephrologists and experts in the field of CKD. Raymond Vanholder (Belgium) - past president of ERA-EDTA had a keynote lecture on "CKD: Questions that need to be answered and are not (or at least not entirely)". The workshop continued in four sessions with lectures from Alberto Ortiz (Spain), Olivera Stojceva-Taneva (R. Macedonia), Dimitrios Goumenos (Greece), Joachim Beige (Germany), Marian Klinger (Poland), Goce Spasovski (R. Macedonia), Joachim Jankowski (Germany), Adalbert Schiller (Romania), Robert Johnson (USA), Franco Ferrario (Italy), Ivan Rychlik (Czech Republic), Fulvio Magni (Italy) and Giovambattista Capasso (Italy), all covering a training theme. Within the meeting there were two lectures on complimentary skills for ethics in science and career advancement from two principal investigators - Goce Spasovski (R. Macedonia) and Joost Schanstra (France). During the Regular Meeting, 13 PhD students i.e. Early Stage Researchers and one Experienced Researcher from both Programs presented their work and progress within iMODE-CKD and BCMolMed projects. This meeting was a great opportunity to exchange experience and ideas in the field of systems biology approaches and

  2. The Curie laboratory. In the middle of a competence network. The study of radioactivity is an enterprise at multiple components; Le laboratoire Curie. Au coeur d`un reseau de competence. L`etude de la radioactivite est une entreprise a composantes multiples

    Energy Technology Data Exchange (ETDEWEB)

    Boudia, S. [Centre de recherche en histoire des sciences et des techniques a la Villette, 75 - Paris (France)

    1997-07-01

    After the first world war, the most important research laboratory is placed under the direction of a woman: Marie Curie. She leads a voluntarist policy to weave links with industry, the medical profession, and public authorities. In this network, circulate men, women, radium samples,calibration certificates, money, measuring instruments. (N.C.)

  3. Mindset theory of action phases

    OpenAIRE

    Gollwitzer, Peter

    2012-01-01

    Mindset theory of action phases is based on the distinction between motivation and volition as proposed by the Rubicon model which claims that prior to crossing the Rubicon (i.e., making a goal decision) motivational principles apply whereas thereafter volitional principles set in. The latter are concerned with goal implementation, whereas the former relate to the choosing of goals. Mindset theory of action phases proposes that different cognitive procedures are activated when people tackle t...

  4. Representation of action in Parkinson's disease: imagining, observing, and naming actions.

    Science.gov (United States)

    Poliakoff, Ellen

    2013-09-01

    People with Parkinson's disease (PD) exhibit slowed movements and difficulty in initiating movements. This review addresses the issue of whether or not cognitive representations of actions in PD are affected, alongside these motor problems. In healthy people, the motor system can be involved in tasks such as observing a graspable object or another person's action, or imagining and naming actions, in the absence of overt movement. As described in this review, the fact that the slowed real movements exhibited by PD patients are coupled with slower motor imagery and verb processing provides additional evidence for the involvement of the motor system in these processes. On the other hand, PD patients can still engage in motor imagery and action observation to some extent, which is encouraging for the use of these processes in rehabilitation. Findings across the different domains of action-representation reveal several important factors. First, the nature of action is critical: patients' performance in observation and naming tasks is influenced by whether or not the action is in their repertoire and by the extent of motion required to execute the action. Second, people with PD may use alternative or compensatory mechanisms to represent actions, such as relying more on a third-person perspective or a visual strategy. Third, people with PD show a lack of specificity, responding as strongly to stimuli related and unrelated to actions. Investigating action-representation in PD has implications for our understanding of both the symptoms of PD and the cognitive representation of actions in the healthy system.

  5. Study by neutron diffusion of magnetic fluctuations in iron in the curie temperature region; Etude des fluctuations d'aimantation dans le fer au voisinage de la temperature de curie par diffusion des neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Ericson-Galula, M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-12-15

    The critical diffusion of neutrons in iron is due to the magnetisation fluctuations which occur in ferromagnetic substances in the neighbourhood of the Curie temperature. The fluctuations can be described in correlation terms; a correlation function {gamma}{sub R{sub vector}} (t) is defined, {gamma}{sub R{sub vector}} (t) = mean value of the scalar product of a reference spin and a spin situated at a distance (R) from the first and considered at the instant t. In chapter I we recall the generalities on neutron diffusion cross-sections; a brief summary is given of the theory of VAN HOVE, who has shown that the magnetic diffusion cross section of neutrons is the Fourier transformation of the correlation function. In chapter Il we study the spatial dependence of the correlation function, assumed to be independent of time. It can then be characterised by two parameters K{sub 1} and r{sub 1}, by means of which the range and intensity of the correlations can be calculated respectively. After setting out the principle of the measurement of these parameters, we shall describe the experimental apparatus. The experimental values obtained are in good agreement with the calculations, and the agreement is better if it is supposed that the second and not the first neighbours of an iron atom are magnetically active, as proposed by Neel. In chapter III we study the evolution with time of the correlation function; this evolution is characterised by a parameter {lambda} depending on the temperature, which occurs in the diffusion equation obeyed by the magnetisation fluctuations: {delta}M{sub vector}/{delta}t = {lambda} {nabla}{sup 2} M{sub vector}. The principle of the measurement of {lambda} is given, after which the modifications carried out on the experimental apparatus mentioned in chapter II are described. The results obtained are then discussed and compared with the theoretical forecasts of De Gennes, mode by using the

  6. The Challenge of Affirmative Action.

    Science.gov (United States)

    Pang, Valerie Ooka; Strom, David; Young, Russell L.

    1997-01-01

    Explores the challenges of using affirmative action programs when competing groups of underrepresented people vie for limited school resources. The case study of a San Francisco (California) high school illustrates the difficulties of balancing competing goals when affirming diversity and addressing patterns of discrimination conflict with equal…

  7. Action Research for Sustainability

    DEFF Research Database (Denmark)

    Egmose, Jonas

    by analysing processes of social learning. The book addresses the need to move towards sustainability at societal level as a democratic challenge questioning the way we live on planet earth. By conceptualising sustain-ability as an immanent and emergent ability of ecological and social life, continuously...... to provide local citizens with a greater say in the future of urban sustainability research, this book shows how action research can make important methodological contributions to processes of social learning between citizens and scientists by enabling free spaces in peoples everyday life and within academia...

  8. Action Research for Sustainability

    DEFF Research Database (Denmark)

    Egmose, Jonas

    on urban sustainability the need to move towards sustainability at societal level is conceptualised as a democratic challenge questioning the way we live on planet earth. By understanding sustainability as an immanent and emergent ability of ecological and social life, continuously to renew itself without...... with a greater say in the future of urban sustainability research, the work shows how action research can make important methodological contributions to processes of social learning between citizens and scientists by enabling free spaces in peoples everyday life and within academia, where aspects...

  9. Action Research for Sustainability

    DEFF Research Database (Denmark)

    Egmose, Jonas

    to provide local citizens with a greater say in the future of urban sustainability research, this book shows how action research can make important methodological contributions to processes of social learning between citizens and scientists by enabling free spaces in peoples everyday life and within academia...... by analysing processes of social learning. The book addresses the need to move towards sustainability at societal level as a democratic challenge questioning the way we live on planet earth. By conceptualising sustain-ability as an immanent and emergent ability of ecological and social life, continuously...... to renew itself without eroding its own foundation of existence, it argues that since sustainability cannot be invented but only supported (or eroded) by science, we need to reframe science in the role of sustaining sustain-ability. Through analyses of a three year action research programme, aiming...

  10. NutriLive: An Integrated Nutritional Approach as a Sustainable Tool to Prevent Malnutrition in Older People and Promote Active and Healthy Ageing—The EIP-AHA Nutrition Action Group

    Directory of Open Access Journals (Sweden)

    Maddalena Illario

    2016-01-01

    Full Text Available The present document describes a nutritional approach that is nested in the European Innovation Partnership for Active and Healthy Aging (EIP-AHA and aims to provide the first common European program translating an integrated approach to nutritional frailty in terms of a multidimensional and transnational methodology. The document has been developed by the A3 Nutrition Action Area of the EIP-AHA and aims at providing a stepwise approach to malnutrition in older citizens, identifying adequate interventions based on a unified assessment and ICT-supported solutions. “NutriLive” is an integrated nutritional approach, represented by a structured Screening-Assessment-Monitoring-Action-Pyramid-Model (SAM-AP. Its core concept is the stratification of the nutritional needs, considered by the working group as the key for targeted, effective, and sustainable interventions. “NutriLive” tries to close gaps in epidemiological data within an aging population, creating a unified language to deal with the topic of nutrition and malnutrition in Europe. By assembling all the validated screening, assessment, and monitoring tools on malnutrition in a first pyramid, which is interrelated to a second intervention pyramid, the A3 Nutrition WG identifies a common, integrated vision on the nutritional approach to frailty, which applies to the various health care settings.

  11. Solidarity, synchronization and collective action

    CERN Document Server

    Bruggeman, Jeroen

    2013-01-01

    For people to act collectively in actual situations -- in contrast to public goods experiments -- goal ambiguity, diversity of interests, and uncertain costs and benefits stand in their way. Under such conditions, people seem to have few reasons to cooperate, yet the Arab revolutions, as conspicuous examples, show that collective action can take place despite the odds. I use the Kuramoto model to show how people in a cohesive network topology can synchronize their salient traits (emotions, interests, or other), and that synchronization happens in a phase transition, when group solidarity passes a critical threshold. This yields more precise predictions of outbursts of collective action under adverse conditions, and casts a new light on different measures of social cohesion.

  12. Constituir-se enquanto grupo: a ação de sujeitos na produção do coletivo Developing oneself as group: people actions in the production of the collective

    Directory of Open Access Journals (Sweden)

    Andréa Vieira Zanella

    2001-06-01

    Full Text Available Este artigo tem por objetivo analisar o processo de constituição de um grupo a partir de dados coletados em pesquisa com uma turma de vinte servidores públicos, participantes de um programa de formação de gerentes em serviço. O fato de estarem reunidos durante duas semanas em um mesmo local favoreceu o estudo das relações sociais entabuladas naquele contexto, bem como a investigação de seus movimentos. O elemento desencadeador da constituição grupal foi o reconhecimento mútuo dos sujeitos que, por verem-se compartilhando algo significativo, sentiram-se constituintes de um grupo. A partir do encontro promoveram, simultaneamente, continuidade e rupturas com a história pregressa, construindo assim sua própria rota, a qual é marcada tanto pelas singularidades presentes quanto pela ação coletiva ali engendrada.The purpose of this article is to analyse the process of constitution of a group from data collected in a research with a group of 20 public workers, who took part in a program of manager formation at work. Since they were together during two weeks in the same place the constitution of meaningful relations among these people was favoured. The record of these relations was considered relevant material to the investigations of their movements. What sat off the constitution of the group was the mutual recognition of people who felt belonging to a collective because they perceived themselves sharing something which was meaningful to them. From the meeting onwards they promoted simultaneously continuities and ruptures with the past history, developing their own way, which is marked by the present singularities and the collective performance there produced.

  13. Action Emulation

    NARCIS (Netherlands)

    D.J.N. van Eijck (Jan); J. Ruan; T. Sadzik

    2012-01-01

    textabstractThe effects of public announcements, private communications, deceptive messages to groups, and so on, can all be captured by a general mechanism of updating multi-agent models with update action models, now in widespread use. There is a natural extension of the definition of

  14. China's Actions

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ China's National Development and Reform Commission publicized the country's policies and actions for addressing climate change in a report released on November 26,2009.The report highlighted China's efforts in cutting greenhouse gas emissions in 2009 by: (1)Rigorously checking the blind expansion of its energy-and pollution-intensive industries.

  15. Structural and magnetic properties of GeMn layers; High Curie temperature ferromagnetism induced by self organized GeMn nano-columns

    Energy Technology Data Exchange (ETDEWEB)

    Devillers, T.; Jamet, M.; Barski, A.; Poydenot, V.; Dujardin, R.; Bayle Guillemaud, P.; Bellet Amalric, E.; Mattana, R. [Departement de Recherche Fondamentale sur la Matiere Condensee, Service de Physique des Materiaux et Microstructures, CEA Grenoble, 17 avenue des Martyrs, 38054 Grenoble Cedex (France); Rothman, J. [Laboratoire d' Electronique de Technologie de l' Information, Laboratoire Infrarouge, CEA Grenoble, 17 avenue des Martyrs, 38054 Grenoble Cedex (France); Cibert, J. [Laboratoire Louis Neel, CNRS, BP166, 38042 Grenoble Cedex 9 (France); Tatarenko, S. [Laboratoire de Spectrometrie Physique, BP 87, 38402 Saint-Martin d' Heres (France)

    2007-01-15

    In this paper we report on the structural and magnetic properties of GeMn layers grown on Ge(001). We show that for the optimized Mn concentration (6%) and for optimized growth temperature (close to 130 C), GeMn samples exhibit a high Curie temperature (higher than 400 K) and Anomalous Hall Effect up to room temperature. Our GeMn layers grown at low temperature (70 C to 130 C) are composed of vertical Mn-rich nano-columns. Samples grown at temperatures higher than 130 C contain GeMn nanoclusters. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  16. La historia de la ciencia en la enseñanza de la naturaleza de la ciencia: Maria Skłodowska-Curie y la radiactividad

    OpenAIRE

    2015-01-01

    Se presentan tres unidades didácticas para enseñar la naturaleza de la ciencia al profesorado de ciencias. Las unidades utilizan materiales de historia de la ciencia centrados en la figura y en el trabajo de Maria Sklodowska-Curie y organizados a modo de casos para contextualizar la reflexión metacientífica (sobre la naturaleza de la ciencia). Tal reflexión se realiza a través de ideas epistemológicas clave ligadas a tres tópicos: método científico, realismo y contextos y valores de la cienci...

  17. Exchange coupling and magnetoresistance in CoFe/NiCu/CoFe spin valves near the Curie point of the spacer

    Science.gov (United States)

    Andersson, S.; Korenivski, V.

    2010-05-01

    Thermal control of exchange coupling between two strongly ferromagnetic layers through a weakly ferromagnetic Ni-Cu spacer and the associated magnetoresistance is investigated. The spacer, having a Curie point slightly above room temperature, can be cycled between its paramagnetic and ferromagnetic states by varying the temperature externally or using joule heating. It is shown that the giant magnetoresistance vanishes due to a strong reduction in the mean free path in the spacer at above ˜30% Ni concentration—before the onset of ferromagnetism. Finally, a device is proposed which combines thermally controlled exchange coupling and large magnetoresistance by separating the switching and the readout elements.

  18. Curie temperature of Co-doped TiO2 as functions of carrier density and Co content evaluated from electrical transport and magnetization at low temperature regime

    Directory of Open Access Journals (Sweden)

    Thantip S. Krasienapibal

    2016-05-01

    Full Text Available Curie temperature (TC of anatase Co-doped TiO2 epitaxial thin films was systematically investigated as functions of carrier density (n and Co content (x by electrical transport and magnetization measurements at low temperature regime. The estimated TC from both measurements showed similar TC. For x = 0.03, 0.05, and 0.07, non-monotonic TC vs. n relations were observed, whereas TC was monotonically increasing function of n for x = 0.10. Possible mechanism of high TC ferromagnetism for this compound was discussed.

  19. Joint action: Neurocognitive mechanisms supporting human interaction

    NARCIS (Netherlands)

    Bekkering, H.; Bruijn, E.R.A. de; Cuijpers, R.H.; Newman-Norlund, R.D.; Schie, H.T. van; Meulenbroek, R.G.J.

    2009-01-01

    Humans are experts in cooperating with each other when trying to accomplish tasks they cannot achieve alone. Recent studies of joint action have shown that when performing tasks together people strongly rely on the neurocognitive mechanisms that they also use when performing actions individually, th

  20. Little People of America

    Science.gov (United States)

    ... information. World Dwarf Games 2017 Welcome to Little People of America Little People of America (LPA) is a nonprofit organization that provides support and information to people of short stature and their families. LPA is ...

  1. Reactivities of acid and/or tetralin pretreated Wandoan coal for a Curie point flash pyrolysis; Sanzen shori, tetralin yobaimae shori Wandoan tan no kyusoku netsubunkai

    Energy Technology Data Exchange (ETDEWEB)

    Kishino, M.; Sakanishi, K.; Korai, Y.; Mochida, I. [Kyushu University, Fukuoka (Japan). Institute of Advanced Material Study

    1996-10-28

    Discussions were given on effects of acid pretreatment and tetralin swelling in Wandoan coal on a Curie point flash pyrolysis (which used a Curie point pyrolyzer). Residue yield loss effects were obtained at 3.9% in hydrochloric acid pretreatment, and 6.2% in acetic acid pretreatment. The effects of tetralin swelling pretreatment were compared in the similar manner in terms of the residue yield loss. The effects were 4.0% in untreated coal, 2.0% in the hydrochloric acid pretreatment, and 0.6% in the acetic acid pretreatment. It is thought that components that can be activated by acetic acid have already been activated, but the remaining components would not be activated by tetralin. Average microporosity (area) in the remaining particle as a whole shows very little difference both in acetic acid pretreated coal and untreated coal. However, with the acetic acid pretreatment, pores smaller than 4{mu}m{sup 2} disappeared, and pores as large as 205 to 411{mu}m{sup 2} increased largely. This phenomenon was observed as an increase in foaming degree under microscopic observation, even if the average microporosity remains equal. Thermoplasticity of the coal increased, and so did volatilization reactivity as a result of the acetic acid pretreatment, resulting in appearance of a large number of large pores. 6 refs., 2 figs., 2 tabs.

  2. DFT+ U study of electronic structure and Curie temperature of A2 B ReO6 (A=Sr, Ca and B=Cr, Fe)

    Science.gov (United States)

    Lee, Alex; Marianetti, Chris

    Re-based double perovskites (DPs) have attracted much attention due to their high Curie temperature (TC) and colossal magneto resistance with large potential for spintronic applications. Here we investigate the electronic and magnetic properties of the Re-based DPs A2 B ReO6 (A=Sr, Ca and B=Cr, Fe) using density functional theory + U (DFT+ U) calculations. While monoclinic Ca2CrReO6 and Ca2FeReO6 (monoclinic) are insulating within GGA+ U, tetragonal Sr2CrReO6 (a0a0c0) and Sr2FeReO6 (a0a0c-) remain metallic. We show that both on-site interaction U and octahedral tilting are critical to obtain the insulating phases. The a0a0c- -phase of Sr2CrReO6 is most stable and insulating with nonzero U, suggesting that the high quality Sr2CrReO6 film on STO substrate can be a semiconductor as reported in recent experiments. We explain that the insulator-to-metal transition (MIT) of Ca2FeReO6 at 140K is predominantly due to a structural phase transition which drives the insulating state. Curie temperatures of Re-based DPs are calculated using the classical Monte Carlo simulations based on the Heisenberg model.

  3. Depth to Curie temperature or bottom of the magnetic sources in the volcanic zone of la Réunion hot spot

    Science.gov (United States)

    Gailler, Lydie-Sarah; Lénat, Jean-François; Blakely, Richard J.

    2016-09-01

    We present an innovative study to generalize Curie Point Depth (CPD) determinations at the scale of oceanic volcanic islands, an approach which has previously focused largely on continental areas. In order to determine the validity of this technique in oceanic environments, we first tested the approach on sets of sea-floor-spreading anomalies. Assuming that magnetic anomalies are concentrated within the oceanic crust and uppermost mantle, the Curie depth should deepen as oceanic lithosphere increases in age and thickness away from spreading centers. The calculated depths to the magnetic bottom are in agreement with this general pattern. On the basis of this test, we then applied the method to La Réunion Island and surrounding oceanic lithosphere. The calculated extent of magnetic sources lies at depths between 10 and 30 km and exhibits a complex topography, presumably caused by a combination of various magmatic and tectonic lithospheric structures. These calculations indicate that magnetic sources extend well below the crust-mantle interface at this location. To the first order, the bottom of the magnetic surface shallows beneath Réunion and Mauritius Islands due to the thermal effect of the hot spot, and deepens away from La Réunion edifice. On the scale of the Mascarene Basin, several discontinuities in the CPD correlate well with major fracture zones.

  4. Curie temp erature mechanism in La(Fe,Si)13 comp ound%La(Fe,Si)13化合物的居里温度机制

    Institute of Scientific and Technical Information of China (English)

    王芳; 汪金芝; 冯唐福; 孙仁兵; 余盛

    2014-01-01

    NaZn13型La(Fe,Si)13化合物随Si含量增加,相变性质由一级过渡为二级,化合物晶胞体积收缩,饱和磁化强度降低,居里温度升高。其居里温度与晶胞体积之间的关系不能用Bethe-Slater曲线给出合理的解释。本文利用添加间隙原子碳调节La(Fe,Si)13化合物晶胞体积和居里温度的方法,系统研究了该化合物居里温度与晶胞体积之间的关系。结果发现二者之间的变化规律遵循Jaccarino-Walker模型,即仅有5%甚至更少的3d电子被认为是真正的巡游电子,其余的3d电子仍是局域的。以极化的巡游电子为媒介,局域电子之间产生类似于Ruderman-Kittel-Kasuya-Yosida 的长程相互作用,相互作用的符号和大小与距离呈周期性震荡。随Si含量的增加, La(Fe,Si)13化合物巡游电子数目增加,化合物的居里温度由晶胞体积和巡游电子的浓度共同决定。%In NaZn13 type La(Fe,Si)13 compound, the phase transition nature varies from the first order to the second order, the cell volume contracts, the saturated magnetization decreases and the Curie temperature increases with increasing Si content. In this paper, the relation between the Curie temperature and the cell volume is investigated systematically by introducing the interstitial carbon atoms, which is an efficient method to control the cell volume and the Curie temperature. It is found that the relation between the Curie temperature and the cell volume is consistent with the Jaccarino-Walker model, in which only 5% or less 3d electrons are considered as the itinerant electrons and the others are regarded as the localized ones. With the polarized itinerant electrons used as a medium, the interaction between the 3d localized electrons is similar to Ruderman-Kittel-Kasuya-Yosida interaction, whose sign and magnitude oscillate periodically with distance. The number of the itinerant electrons of the La (Fe,Si)13 increases with the increase of Si content. The Curie

  5. Ultra-high Curie temperature (>800 °C) low sintering temperature Bi2(1-x)La2xWO6 piezoelectric material for the applications of seafloor hydrothermal vents detection

    Science.gov (United States)

    Liao, Qingwei; An, Zhao; Huang, Haining; Fang, Mingwei; Chen, Zhongjun; Peng, Shasha; Li, Kun

    2016-10-01

    Searching low sintering temperature material with ultra-high Curie temperature (>800 °C) is urgent to seafloor hydrothermal vents detection. Bi2WO6, as the simplest member of the Aurivillius family was improved to possess ultra-high Curie temperature and ultra-high depolarization temperature by experiment at first time. The crystal structure was determined by ab initio and Rietveld refinement calculations. The symmetry group of ultra-high Curie temperature Bi2WO6 is Aba2 (41). The Curie temperatures of Bi2(1-x)La2xWO6 (x = 0, 0.005, 0.01, 0.02, 0.04) with increasing x are 952 °C, 1008 °C, 905 °C, 853 °C, 822 °C, respectively, and depolarization temperatures of them are around 915 °C, 905 °C, 880 °C, 800 °C, and 725 °C, respectively. The typical properties are as follows: Curie temperature T c = 905 °C, depolarization temperature T d = 880 °C, mechanical quality factor Q m = 621.8, d 33 = 17 pC/N, K 33 = 82.01, tanδ = 0.19 × 10-2 with x value of 0.01.

  6. Action Learning: Avoiding Conflict or Enabling Action

    Science.gov (United States)

    Corley, Aileen; Thorne, Ann

    2006-01-01

    Action learning is based on the premise that action and learning are inextricably entwined and it is this potential, to enable action, which has contributed to the growth of action learning within education and management development programmes. However has this growth in action learning lead to an evolution or a dilution of Revan's classical…

  7. Moving from Complaints to Action: Oppositional Consciousness and Collective Action in a Political Community

    Science.gov (United States)

    Kwon, Soo Ah

    2008-01-01

    This article analyzes the process of youth political activism and development by drawing on ethnographic research on Asian and Pacific Islander youth activists. Young people revealed that collective action begins with a critical analysis of their lived experiences with inequalities. Their actions also involved oppositional consciousness that was…

  8. Action orientation overcomes the ego depletion effect.

    Science.gov (United States)

    Dang, Junhua; Xiao, Shanshan; Shi, Yucai; Mao, Lihua

    2015-04-01

    It has been consistently demonstrated that initial exertion of self-control had negative influence on people's performance on subsequent self-control tasks. This phenomenon is referred to as the ego depletion effect. Based on action control theory, the current research investigated whether the ego depletion effect could be moderated by individuals' action versus state orientation. Our results showed that only state-oriented individuals exhibited ego depletion. For individuals with action orientation, however, their performance was not influenced by initial exertion of self-control. The beneficial effect of action orientation against ego depletion in our experiment results from its facilitation for adapting to the depleting task.

  9. Increasing the Curie temperature of Ca{sub 2}FeMoO{sub 6} double perovskite by introducing near-neighbour antiferromagnetic interactions

    Energy Technology Data Exchange (ETDEWEB)

    Rubi, D [Institut de Ciencia de Materials de Barcelona, CSIC, Campus UAB, 08193, Bellaterra (Spain); Frontera, C [Institut de Ciencia de Materials de Barcelona, CSIC, Campus UAB, 08193, Bellaterra (Spain); Roig, A [Institut de Ciencia de Materials de Barcelona, CSIC, Campus UAB, 08193, Bellaterra (Spain); Nogues, J [Institut Catala de Recerca i Estudis Avancats (ICREA), 08193, Bellaterra, Catalunya (Spain); Munoz, J S [Departament de Fisica, Universitat Autonoma de Barcelona, 08193, Bellaterra, Catalunya (Spain); Fontcuberta, J [Institut de Ciencia de Materials de Barcelona, CSIC, Campus UAB, 08193, Bellaterra (Spain)

    2005-12-21

    We report on the magnetic, magnetotransport and structural characterization of (Ca{sub 1-y}Nd{sub y}){sub 2}Fe{sub 1+x}Mo{sub 1-x}O{sub 6} (x<0.5) ferromagnetic double perovskites. It is found that the presence of an excess (x>0) of Fe ions in the metallic sublattice produces a remarkable increase, by more than 90 K, of the Curie temperature. Moessbauer spectroscopy data indicate a reinforcement of the magnetic interactions. We argue that this dramatic enhancement of the ferromagnetic order is due to the strong antiferromagnetic superexchange coupling between near-neighbour Fe-Fe occupying regular and antisite positions in the structure. Moreover, the results indicate that the excess of magnetic ions (Fe) is essential to overcome the dilution effects caused by antisite defects.

  10. Enhancement of Curie Temperature and Magnetoresistance in the Perovskites La2/3Ca1/3Mn1-xSixO3

    Institute of Scientific and Technical Information of China (English)

    LI Run-Wei; WANG Zhi-Hong; SUN Ji-Rong; CHEN Xin; SHEN Bao-Gen

    2000-01-01

    Structural, magnetic, and transport properties of perovskite La2/3Ca1/3Mn1-xSixO3 (x=0, 0.025, 0.05) have been studied. The incorporation of Si decreases the overall resistivity, but obviously increases the Curie temperature (Tc), metal-insulator transition temperature (Tp), and the magnetoresistance ratio MR (defined as [R(0)-R(H)]/R(O)) near room temperature. Comparing with La2/3Ca1/3MnO3, the Tc, Tp, and MR of the sample with x=0.05 increase by 30, 45K, and 20%, respectively. Lattice effects may play a more important role than the magnetic dilution in the case of low Si substitution.

  11. An agenda for action.

    Science.gov (United States)

    1987-01-01

    Participants at the 1985 Maseru Seminar on Another Development for Southern African Development Coordination Conference (SADCC) Countries developed an agenda for action aimed at ending the exploitation of people in the region. Another Development, a concept first introduced into the worldwide debate about economic development in 1975, is based on 5 premises: development should be need-oriented, self-reliant, endogenous, ecologically sound, and based on structural transformations. It should be viewed as an integrated socioeconomic, political, and cultural process. Participants noted that conventional development policies are becoming increasingly incapable of satisfying the basic needs of people in the SADCC region for food, health, housing, education, and employment. The Agenda for Action recognizes that the problems of dependency cannot be solved by the more intensive application of development strategies that created the problems in the first place. Needed, instead, is: 1) effective popular participation in all decision-making processes; 2) the transformation of social structures to facilitate effective participation in decision-making; 3) the full exercise of human rights; 4) the establishment of local, district, and national papers and publishing houses dedicated to the right to be informed; 5) the gearing of agricultural production primarily to the growing of food for domestic markets, with exports limited to surpluses; 6) the production of raw materials for manufactured goods that meet local needs; 7) land reform; 8) the coordinated development of both light and heavy industry and mining, with an emphasis on decentralization of industries to rural areas; 9) the allocation of higher priority to resources for housing; 10) the integration of meaningful productive work into the educational system at every level; 11) the development of an endogenous science and technology base; and 12) the allocation of the resources needed for a primary health care system.

  12. Psychological Research on Joint Action: Theory and Data

    NARCIS (Netherlands)

    Knoblich, G.K.; Butterfill, S.; Sebanz, N.

    2011-01-01

    When two or more people coordinate their actions in space and time to produce a joint outcome, they perform a joint action. The perceptual, cognitive, and motor processes that enable individuals to coordinate their actions with others have been receiving increasing attention during the last decade,

  13. Workbook: Community Action Program, Office of Economic Opportunity.

    Science.gov (United States)

    Office of Economic Opportunity, Washington, DC.

    The Community Action Program Workbook has been prepared as an aid to the many people now involved in establishing community action programs to combat poverty. It is designed to stimulate thinking rather than to prescribe given courses of action. Although it has many audiences, the workbook is intended principally for the local community groups who…

  14. La Gestion Locale Sécurisée (GELOSE : L’expérience malgache de gestion décentralisée des ressources naturelles

    Directory of Open Access Journals (Sweden)

    Bruno Sarrasin

    2009-09-01

    Full Text Available Marqué par une biodiversité exceptionnelle et une grande pauvreté humaine, la destruction rapide des ressources naturelles à Madagascar place le territoire et son appropriation au centre des enjeux de développement. Dans ce contexte, cet article s’intéresse à l’émergence et à la mise en œuvre d’une politique publique touchant la Gestion LOcale SÉcurisée (GELOSE dont le principal objectif vise à transférer la gestion de ces ressources, de l’État vers les communautés locales, dans le but de les protéger plus efficacement. Cette lecture montre cependant que les objectifs, les ressources et les stratégies des principaux acteurs concernés sont difficilement conciliables et que le système de relation qu’il induit n’est pas nécessairement en phase avec les finalités poursuivies.Marked by exceptional biodiversity and extreme human poverty, Madagascar is experiencing a rapid destruction of its natural resources, placing territory and its appropriation at the heart of development issues. From this perspective, this article will look at the development and implementation of a public policy, the Gestion LOcale SÉcurisée (GELOSE, for the local management of natural renewable resources. This regulation seeks to transfer the management of these resources from the government to local communities in the goal of protecting them more effectively. We will see, however, that the objectives, resources and strategies of the primary actors concerned are difficult to reconcile at best and that the relational system to which the policy gives rise is not necessarily in keeping with the goals being pursued.

  15. Are corporations people too? The neural correlates of moral judgments about companies and individuals.

    Science.gov (United States)

    Plitt, Mark; Savjani, Ricky R; Eagleman, David M

    2015-04-01

    To investigate whether the legal concept of "corporate personhood" mirrors an inherent similarity in the neural processing of the actions of corporations and people, we measured brain responses to vignettes about corporations and people while participants underwent functional magnetic resonance imaging. We found that anti-social actions of corporations elicited more intense negative emotions and that pro-social actions of people elicited more intense positive emotions. However, the networks underlying the moral decisions about corporations and people are strikingly similar, including regions of the canonical theory of mind network. In analyzing the activity in these networks, we found differences in the emotional processing of these two types of vignettes: neutral actions of corporations showed neural correlates that more closely resembled negative actions than positive actions. Collectively, these findings indicate that our brains understand and analyze the actions of corporations and people very similarly, with a small emotional bias against corporations.

  16. Study of consequences of a ionizing radiation exposure on the health of persons having stay at the Marie Curie school of Nogent-sur-Marne (Val-de-Marne); Etude des consequences d'une exposition aux rayonnements ionisants sur la sante des personnes ayant sejourne a l'ecole Marie Curie de Nogent-sur-Marne (Val-de-Marne)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-03-01

    This study follows two other ones about the same subject. No one could bring elements to the question of the exposure impact on the population having stayed in the school. The old pupils and personnel have been exposed to radiation doses higher to the limit values of public exposure especially before 1987. The scientific knowledge suggest that the eventual sanitary consequences are in the area of low risks. The lack of exhaustiveness in the inquiry realisation and the lack of statistical power did not allow to measure the sanitary impact of ionizing radiation exposure among the former pupils of the Marie Curie school of Nogent sur Marne. (N.C.)

  17. 'Wir sind das Volk': notes about the notion of 'The people' as occasioned by the Lissabon Urteil

    NARCIS (Netherlands)

    Eijsbouts, W.T.

    2010-01-01

    Leipzig 1989: dissolution of the East German state people or Staatsvolk - Karlsruhe 2020: dissolution of the German people - Courts and the people as a neglected constitutional relationship - Bundesverfassungsgericht's versions of the people - Analysis of the concept of people - Forms of action - Po

  18. Effect of Mn-site vacancies on the magnetic entropy change and the Curie temperature of La0.67Ca0.33Mn1-xO3 perovskite

    DEFF Research Database (Denmark)

    Chen, Wei; Nie, L.Y.; Xu, Zhao;

    2006-01-01

    Single-phase polycrystalline samples of La0.67Ca0.33Mn1-xO3 (x = 0.00, 0.02, 0.04, 0.06) have been prepared using the sol-gel method. The structure, magnetocaloric properties and the Curie temperature of the samples with different Mn vacancy concentrations have been investigated. The experimental...

  19. Lawrence Berkeley Laboratory Affirmative Action Program. Revised

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-06-01

    The Lawrence Berkeley Laboratory`s Affirmative Action Program (AAP) serves as a working document that describes current policies, practices, and results in the area of affirmative action. It represents the Laboratory`s framework for an affirmative approach to increasing the representation of people of color and women in segments of our work force where they have been underrepresented and taking action to increase the employment of persons with disabilities and special disabled and Vietnam era veterans. The AAP describes the hierarchy of responsibility for Laboratory affirmative action, the mechanisms that exist for full Laboratory participation in the AAP, the policies and procedures governing recruitment at all levels, the Laboratory`s plan for monitoring, reporting, and evaluating affirmative action progress, and a description of special affirmative action programs and plans the Laboratory has used and will use in its efforts to increase the representation and retention of groups historically underrepresented in our work force.

  20. Collaborative relationship in preventive home visits to older people

    DEFF Research Database (Denmark)

    Yamada, Yukari; Vass, Mikkel; Hvas, Lotte

    2011-01-01

    To describe what characterizes preventive home visits with collaborative relationships among non-disabled home-dwelling older people in Japan. Background. Preventive home visits have the potential to result in improved health outcomes among older people. Collaboration, mutual understanding...... communication skills and professionalism, and practical actions after the visits characterized cases, where favourable changes in behaviour were obtained in non-disabled home-dwelling older people in Japan. Relevance to clinical practice. Education should be emphasized, because preventive home visitor...

  1. Urban Bird Feeding: Connecting People with Nature.

    Directory of Open Access Journals (Sweden)

    Daniel T C Cox

    Full Text Available At a time of unprecedented biodiversity loss, researchers are increasingly recognizing the broad range of benefits provided to humankind by nature. However, as people live more urbanized lifestyles there is a progressive disengagement with the natural world that diminishes these benefits and discourages positive environmental behaviour. The provision of food for garden birds is an increasing global phenomenon, and provides a readily accessible way for people to counter this trend. Yet despite its popularity, quite why people feed birds remains poorly understood. We explore three loosely defined motivations behind bird feeding: that it provides psychological benefits, is due to a concern about bird welfare, and/or is due to a more general orientation towards nature. We quantitatively surveyed households from urban towns in southern England to explore attitudes and actions towards garden bird feeding. Each household scored three Likert statements relating to each of the three motivations. We found that people who fed birds regularly felt more relaxed and connected to nature when they watched garden birds, and perceived that bird feeding is beneficial for bird welfare while investing time in minimising associated risks. Finally, feeding birds may be an expression of a wider orientation towards nature. Overall, we found that the feelings of being relaxed and connected to nature were the strongest drivers. As urban expansion continues both to threaten species conservation and to change peoples' relationship with the natural world, feeding birds may provide an important tool for engaging people with nature to the benefit of both people and conservation.

  2. Playing Action Video Games Improves Visuomotor Control.

    Science.gov (United States)

    Li, Li; Chen, Rongrong; Chen, Jing

    2016-08-01

    Can playing action video games improve visuomotor control? If so, can these games be used in training people to perform daily visuomotor-control tasks, such as driving? We found that action gamers have better lane-keeping and visuomotor-control skills than do non-action gamers. We then trained non-action gamers with action or nonaction video games. After they played a driving or first-person-shooter video game for 5 or 10 hr, their visuomotor control improved significantly. In contrast, non-action gamers showed no such improvement after they played a nonaction video game. Our model-driven analysis revealed that although different action video games have different effects on the sensorimotor system underlying visuomotor control, action gaming in general improves the responsiveness of the sensorimotor system to input error signals. The findings support a causal link between action gaming (for as little as 5 hr) and enhancement in visuomotor control, and suggest that action video games can be beneficial training tools for driving.

  3. Education for rural people

    OpenAIRE

    2015-01-01

    Nearly one out of six people in the world is suffering from hunger and illiteracy. This book was developed to assist policy makers dealing with rural poverty, food insecurity and education challenges confronting rural people. It seeks to address the correlation between education, training, empowerment and food security, mainly through a number of examples from all over the world. It is about strengthening the capacity of rural people to achieve food security. It identifies different dimension...

  4. People in the World

    Institute of Scientific and Technical Information of China (English)

    方岩

    2004-01-01

    “When in Rome, do as the Romans do.”is a famous saying about customs. But what exactly do the Romans and other people do that is so different? Where do women wear tings in their noses to show they are married, for example? Where do people greet each other with a bow rather than a handshake? Here are some other ways people behave and beautify themselves around the world.

  5. An emerging action science of social settings.

    Science.gov (United States)

    Seidman, Edward

    2012-09-01

    Seymour B. Sarason's innovative ideas have influenced much of my work. These same ideas-in particular, his concepts of social settings, behavioral and programmatic regularities, and the universe of alternatives-also serve as the foundation for an action science of social settings. Questions regarding theory, measurement, intervention, and research design and data analysis are central to the development of this action science, and there have been recent innovations in each of these areas. However, future challenges remain for the field. We must continue to move forward to advance an action science of social settings and make a real difference in people's lives.

  6. Tuning the Curie temperature of L1{sub 0} ordered FePt thin films through site-specific substitution of Rh

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Dongbin, E-mail: dongbin.xu@seagate.com [Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Materials Science and Engineering, National University of Singapore, Singapore 117576 (Singapore); Sun, Cheng-Jun, E-mail: cjsun@aps.anl.gov, E-mail: msecgm@nus.edu.sg; Heald, Steve M. [Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Chen, Jing-Sheng; Chow, Gan Moog, E-mail: cjsun@aps.anl.gov, E-mail: msecgm@nus.edu.sg [Department of Materials Science and Engineering, National University of Singapore, Singapore 117576 (Singapore); Zhou, Tie-Jun [Data Storage Institute, Agency for Science, Technology and Research (A-STAR), Singapore 117608 (Singapore); Bergman, Anders; Sanyal, Biplab [Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala (Sweden)

    2014-10-14

    In structurally ordered magnetic thin films, the Curie temperature (T{sub C}) of ferromagnetic films depends on the exchange integral of the short range ordered neighboring atoms. The exchange integral may be adjusted by controlling the elemental substitutional concentration at the lattice site of interest. We show how to control the T{sub C} in high anisotropy L1{sub 0} Fe{sub 50}Pt{sub 50} magnetic thin films by substituting Rh into the Pt site. Rh substitution in L1{sub 0} FePt modified the local atomic environment and the corresponding electronic properties, while retaining the ordered L1{sub 0} phase. The analysis of extended x-ray Absorption Fine Structure spectra shows that Rh uniformly substitutes for Pt in L1{sub 0} FePt. A model of antiferromagnetic defects caused by controlled Rh substitution of the Pt site, reducing the T{sub C,} is proposed to interpret this phenomenon and its validity is further examined by ab initio density functional calculations.

  7. Magnetocaloric effect in high Gd content Gd-Fe-Al based amorphous/nanocrystalline systems with enhanced Curie temperature and refrigeration capacity

    Directory of Open Access Journals (Sweden)

    Linlin Zhang

    2016-03-01

    Full Text Available The Gd-Fe-Al amorphous/nanocrystalline composites were successfully designed and obtained with both high Curie temperature (Tc and large magnetic entropy change (ΔSM. The Tc can be tuned from 172 to 280 K and refrigeration capacity (RC has a value between 690 and 867 J/kg under a field change of 0–5 T by changing the Gd contents and the formation of Gd nanocrystallites. And, ΔSM in Gd-Fe-Al amorphous/nanocrystalline composites reached a value of 7.2 J kg−1 K−1 under a field change of 0–5 T. The high RC in Gd-Fe-Al system were ascribed to the widening full width at half maximum (δFWHM up to 240 K of the magnetic entropy change (ΔSMmax peak because of the combination contribution of amorphous matrix and the precipitated Gd-riched nanocrystalline. Our research would shed light on how to design attractive candidates for magnetic refrigeration materials with high performance at near room temperature.

  8. Strong pressure dependences of the magnetization and Curie temperature for CrTe and MnAs with NiAs-type structure

    CERN Document Server

    Yamada, H; Kondo, K; Goto, T

    2002-01-01

    To study the strong magneto-volume effects observed in CrTe and MnAs with NiAs-type crystal structure, first-principle band calculations are carried out by a self-consistent linear muffin-tin orbital method within the atomic sphere approximation. The equilibrium volume of the unit cell is obtained as a function of the magnetization M, which gives the volume magnetostriction. The dependence on M of the bulk modulus is also estimated. The coefficients a sub 0 and b sub 0 in the Landau expansion, DELTA E(M) = a sub 0 M sup 2 /2 + b sub 0 M sup 4 /4, are estimated by the fixed-spin-moment method. The calculated results for CrTe and MnAs are compared with those for bcc Fe. It is shown that the values of vertical bar a sub 0 vertical bar and b sub 0 for CrTe and MnAs are so small that the correction term from the magneto-volume coupling constants becomes significant. This fact gives a strong pressure dependence of the spontaneous magnetization. The pressure dependence of the Curie temperature is also discussed by m...

  9. Precise tuning of the Curie temperature of (Ga,Mn)As-based magnetic semiconductors by hole compensation: Support for valence-band ferromagnetism

    Science.gov (United States)

    Zhou, Shengqiang; Li, Lin; Yuan, Ye; Rushforth, A. W.; Chen, Lin; Wang, Yutian; Böttger, R.; Heller, R.; Zhao, Jianhua; Edmonds, K. W.; Campion, R. P.; Gallagher, B. L.; Timm, C.; Helm, M.

    2016-08-01

    For the prototype diluted ferromagnetic semiconductor (Ga,Mn)As, there is a fundamental concern about the electronic states near the Fermi level, i.e., whether the Fermi level resides in a well-separated impurity band derived from Mn doping (impurity-band model) or in the valence band that is already merged with the Mn-derived impurity band (valence-band model). We investigate this question by carefully shifting the Fermi level by means of carrier compensation. We use helium-ion implantation, a standard industry technology, to precisely compensate the hole doping of GaAs-based diluted ferromagnetic semiconductors while keeping the Mn concentration constant. We monitor the change of Curie temperature (TC) and conductivity. For a broad range of samples including (Ga,Mn)As and (Ga,Mn)(As,P) with various Mn and P concentrations, we observe a smooth decrease of TC with carrier compensation over a wide temperature range while the conduction is changed from metallic to insulating. The existence of TC below 10 K is also confirmed in heavily compensated samples. Our experimental results are naturally explained within the valence-band picture.

  10. Volume dependence of the exchange interaction and Curie temperature in Co2MGa (M = Ti and Fe): A first-principles study

    Science.gov (United States)

    Liu, X. B.; Altounian, Z.

    2011-04-01

    Magnetic moment, exchange interaction and Curie temperature (TC) have been calculated for Co2TiGa and Co2FeGa by a first-principles density functional calculation combined with a linear response method. The exchange interaction is dominated by Co-Co pairs in Co2TiGa while that of Co2FeGa is mainly contributed by Fe-Co pairs. Based on the mean field multiple-sublattices model, the estimated TC is about 114 K for M = Ti and 1270 K for M = Fe, calculated with the experimental lattice constant, in good agreement with the experimental values (128 K and 1093 K for M = Ti and Fe, respectively). With increasing lattice constant, a, from 95% to 105% of the experimental value (aexp .), the moment per formula unit mf.u. changes from 0.43 μB to 1.0 μB and TC increases from 27 K to 142 K in Co2TiGa. However, mf.u. increases slightly from 4.98 μB to 5.40 μB while TC decreases from 1330 K to 1190 K with increasing a from 95% to 105% of aexp . in Co2FeGa. These different volume dependences of TC are ascribed to the weak ferromagnetism in Co2TiGa and the strong ferromagnetism in Co2FeGa.

  11. Significantly enhanced piezoelectricity in low-temperature sintered Aurivillius-type ceramics with ultrahigh Curie temperature of 800 °C

    Science.gov (United States)

    Cai, Kai; Huang, Chengcheng; Guo, Dong

    2017-04-01

    We report an Aurivillius-type piezoelectric ceramic (Ca1‑2x (LiCe) x Bi4Ti3.99Zn0.01O15) that has an ultrahigh Curie temperature (T c) around 800 °C and a significantly enhanced piezoelectric coefficient (d 33), comparable to that of textured ceramics fabricated using the complicated templating method. Surprisingly, the highest d 33 of 26 pC/N was achieved at an unexpectedly low sintering temperature (T s) of only 920 °C (~200 °C lower than usual) despite the non-ideal density. Study of different synthesized samples indicates that a relatively low T s is crucial for suppressing Bi evaporation and abnormal grain growth, which are indispensable for high resistivity and effective poling due to decreased carrier density and restricted anisotropic conduction. Because the layered structure is sensitive to lattice defects, controlled Bi loss is considered to be crucial for maintaining structural order and spontaneous polarization. This low-T s system is very promising for practical applications due to its high piezoelectricity, low cost and high reproducibility. Contrary to our usual understanding, the results reveal that a delicate balance of density, Bi loss and grain morphology achieved by adjusting the sintering temperature is crucial for the enhancing performance in Aurivillius-type high-T c ceramics.

  12. Significant NRC Enforcement Actions

    Data.gov (United States)

    Nuclear Regulatory Commission — This dataset provides a list of Nuclear Regulartory Commission (NRC) issued significant enforcement actions. These actions, referred to as "escalated", are issued by...

  13. Productive Tensions in Youth Participatory Action Research

    Science.gov (United States)

    Kirshner, Ben

    2010-01-01

    Youth participatory action research (YPAR) brings young people together with adult researchers to identify, study, and act on relevant social problems. In this chapter, the author draws on examples from a recent YPAR project, called Tracing Transitions, whose aim was to study the impact of school closure on students. After defining YPAR in terms…

  14. What are you doing? How active and observational experience shape infants' action understanding

    NARCIS (Netherlands)

    Hunnius, S.; Bekkering, H.

    2014-01-01

    From early in life, infants watch other people's actions. How do young infants come to make sense of actions they observe? Here, we review empirical findings on the development of action understanding in infancy. Based on this review, we argue that active action experience is crucial for infants' de

  15. Activities for Older People

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    Along with the improvement of the standard of living and medical care the lifespan of people in China has increased greatly in the 1990s. There are more older people living in Shanghai, Beijing and Tianjin than in the rest of the country. The government and

  16. Psychodrama with Deaf People

    Science.gov (United States)

    Clayton, Lynette; Robinson, Luther D.

    1971-01-01

    Observations based on psychodrama with deaf people, relating to interaction between people and the communication process, are made. How role training skills, which involve some of the skills of psychodrama, can be applied by professionals in vocational and social learning situations is illustrated. (KW)

  17. Can Noise Kill People?

    Institute of Scientific and Technical Information of China (English)

    刘玲娣

    2007-01-01

    Someone is singing next door,but you feel unhappy because her singing is just making a noise.We know that too much noise makes people feel terrible. Scientists are still trying to find out more about noise,but already it is known that a noise of over 85 decibels can make some people tired and anxious.

  18. Managing & Developing People.

    Science.gov (United States)

    Brain, Gill, Ed.

    This book presents ideas about and approaches to human resource management (HRM) in British further education (FE) colleges. Introductory material includes author biographies and a preface (Brain) on human resource issues in FE. "Investors in People" (Chambers) considers how working toward recognition as an Investor in People (a British…

  19. Research with Arctic peoples

    DEFF Research Database (Denmark)

    Smith, H Sally; Bjerregaard, Peter; Chan, Hing Man

    2006-01-01

    Arctic peoples are spread over eight countries and comprise 3.74 million residents, of whom 9% are indigenous. The Arctic countries include Canada, Finland, Greenland (Denmark), Iceland, Norway, Russia, Sweden and the United States. Although Arctic peoples are very diverse, there are a variety of...

  20. Democratic People`s Republic of Korea LWR project status

    Energy Technology Data Exchange (ETDEWEB)

    Mulligan, J.B.

    1996-07-01

    In October 1994, at Geneva, the United States and the Democratic People`s Republic of Korea (DPRK) signed an Agreed Framework as a first step toward resolving international concerns about nuclear activities in the DPRK. This Agreement, when implemented, will ultimately lead to the complete dismantlement of those aspects of the DPRK`s nuclear program, including reprocessing-related facilities, that have undermined the viability of the international nuclear non-proliferation regime and the stability of the Asia-Pacific region. The essence of the Agreement is that the DPRK will take near-term action to cease the activities of concern and permit some International Atomic Energy Agency (IAEA) verification inspection. In the future, it will dismantle its production reactors and accept full-scope IAWA safeguards. In return, the United Stated agreed to lead an international effort to supply the DPRK with light-water reactors which are less of proliferation concern than are graphite-moderated production reactors. Until the first LWR is in operation the DPRK will receive shipments of heavy oil to replace the energy lost by shutting down the production reactors.

  1. Effect of Mn-site vacancies on the magnetic entropy change and the Curie temperature of La0.67Ca0.33Mn1-xO3 perovskite

    DEFF Research Database (Denmark)

    Chen, Wei; Nie, L.Y.; Xu, Zhao

    2006-01-01

    results show that vacancy doping at the Mn-sites has a significant influence on the magnetic properties of La0.67Ca0.33Mn1-xO3. The Curie temperature decreases monotonically with increasing the Mn-site vacancy concentration x. A remarkable enhancement of the magnetic entropy change has been obtained...... in the La0.67Ca0.33W0.98O3 sample. The entropy change reaches vertical bar Delta S-M vertical bar = 3.10 J kg(-1) K-1 at its Curie temperature (264 K) under an applied magnetic field H = 10 kOe, which is almost the same value as that of pure Gd....

  2. Impulsive action and motivation

    NARCIS (Netherlands)

    Frijda, N.H.

    2010-01-01

    This paper explores the way in which emotions are causal determinants of action. It argues that emotional events, as appraised by the individual, elicit changes in motive states (called states of action readiness), which in turn may (or may not) cause action. Actions can be elicited automatically,

  3. Action Research: Rethinking Lewin.

    Science.gov (United States)

    Dickens, Linda; Watkins, Karen

    1999-01-01

    Explores both historical and contemporary definitions of action research. Describes the process and goals of action research in the tradition of Lewin. Presents a case study of an action-research project involving two teams in a high-technology corporation that depicts the process in action. (Author/CCM)

  4. Investigating the Benefits of Participatory Action Research for Environmental Education

    Science.gov (United States)

    Bywater, Krista

    2014-01-01

    Environmental education (EE) continues to focus on enhancing people's ecological knowledge to encourage sustainable actions. This deficit approach presumes that once informed about environmental harms, people will work towards sustainable solutions for healthy societies. Yet research overwhelmingly demonstrates that knowledge of environmental…

  5. Long-term results of exclusive low-dose rate curie-therapy for a high-grade vaginal intraepithelial neoplasia; Resultats a long terme de la curietherapie exclusive de bas debit de dose pour neoplasie vaginale intraepitheliale de haut grade

    Energy Technology Data Exchange (ETDEWEB)

    Blanchard, P.; Monnier, L.; Dumas, I.; Azoury, F.; Mazeron, R.; Haie-Meder, C. [Institut Gustave-Roussy, 94 - Villejuif (France)

    2010-10-15

    The authors report the results of an exclusive low dose rate curie therapy for female patients treated for a grade 3 vaginal intraepithelial neoplasia. They reviewed the medical files of patients treated since 1983, i.e. 28 women. They analysed demographic characteristics, the clinic description of lesions, possible treatments which occurred before this high-grade vaginal intraepithelial neoplasia, possible previous history of cervical or endometrial cancer, curie therapy detailed data, presence of tumorous relapse. According to that, they conclude that a 60 Gy exclusive low- vaginal dose-rate curie-therapy is an efficient and well tolerated treatment for high-grade vaginal intraepithelial neoplasia. Short communication

  6. Hybrid Action Systems

    DEFF Research Database (Denmark)

    Rönnkö, M.; Ravn, Anders Peter; Sere, K.

    2003-01-01

    In this paper we investigate the use of action systems with differential actions in the specifcation of hybrid systems. As the main contribution we generalize the definition of a differential action, allowing the use of arbitrary relations over model variables and their time-derivatives in modell......In this paper we investigate the use of action systems with differential actions in the specifcation of hybrid systems. As the main contribution we generalize the definition of a differential action, allowing the use of arbitrary relations over model variables and their time...... parallel composition. Moreover, as the strength of the action system formalism is the support for stepwise development by refinement, we investigate refinement involving a differential action. We show that, due to the predicate transformer semantics, standard action refinement techniques apply also...... to the differential action, thus, allowing stepwise development of hybrid systems Udgivelsesdato: JAN 1...

  7. Trust is other people

    DEFF Research Database (Denmark)

    Luckner, Naemi; Werner, Katharina; Subasi, Özge

    , the Internet is often experienced as a place of anonymity, and people are scared of the ’figurative creep’ lurking behind every dark corner. This view on online environments can be a reason for potential sharers not to use sharing platforms. To explore how people view such issues, we conducted an open...... concerning the interaction with strangers through the platform. Putting trust in an online sharing community seems to be the biggest obstacle that influences whether people draw away rather than move closer together and start collaborating in the sharing community. Here, we report on the main issues...

  8. People on the move.

    Science.gov (United States)

    1999-01-01

    Many people live away from their homes and communities. Worldwide, about 125 million people are migrant workers, immigrants, or refugees in search of education, employment, or safety, making them vulnerable to sexually transmitted infections (STIs), including HIV. Some practical approaches to HIV prevention with people on the move are delineated. These include: 1) the project in Niger describing its work with migrant peer educators; 2) a national program improving health services; 3) a program in India providing STI treatment and health information for truck drivers; 4) a South African HIV program, which includes activities within communities; and 5) HIV prevention programs for refugees in Tanzania and Mozambique.

  9. Hybrid Action Systems

    DEFF Research Database (Denmark)

    Ronkko, Mauno; Ravn, Anders P.

    1997-01-01

    a differential action, which allows differential equations as primitive actions. The extension allows us to model hybrid systems with both continuous and discrete behaviour. The main result of this paper is an extension of such a hybrid action system with parallel composition. The extension does not change...... the original meaning of the parallel composition, and therefore also the ordinary action systems can be composed in parallel with the hybrid action systems....

  10. Critical Behavior of Thermal Expansion and Magnetostriction in the Vicinity of the First order transition at the Curie Point of Gd5(SixGe1-x)4

    Energy Technology Data Exchange (ETDEWEB)

    Mangui Han

    2004-12-19

    Thermal expansion (TE) and magnetostriction (MS) measurements have been conducted for Gd{sub 5}(Si{sub x}Ge{sub 1-x}){sub 4} with a series of x values to study its critical behavior in the vicinity of transition temperatures. It was found that the Curie temperature of Gd{sub 5}(Si{sub x}Ge{sub 1-x}){sub 4} for x 0 {approx} 0.5 is dependent on magnetic field, direction of change of temperature (Tc on cooling was lower than Tc on heating), purity of Gd starting material, compositions, material preparation methods, and also can be triggered by the external magnetic field with a different dT/dB rate for different x values. For Gd{sub 5}(Si{sub 1.95}Ge{sub 2.05}), Gd{sub 5}(Si{sub 2}Ge{sub 2}), Gd{sub 5}(Si{sub 2.09}Ge{sub 1.91}), it was also found that the transition is a first order magneto-structural transition, which means the magnetic transition and crystalline structure transition occur simultaneously, and completely reversible. Temperature hysteresis and phase coexistence have been found to confirm that it is a first order transformation. While for Gd{sub 5}(Si{sub 0.15}Ge{sub 3.85}), it is partially reversible at some temperature range between the antiferromagnetic and the ferromagnetic state. For Gd{sub 5}(Si{sub 2.3}Ge{sub 1.7}) and Gd{sub 5}(Si{sub 3}Ge{sub 1}), it was a second order transformation between the paramagnetic and ferromagnetic state, because no {Delta}T have been found. Giant magnetostriction was only found on Gd{sub 5}(Si{sub 1.95}Ge{sub 2.05}), Gd{sub 5}(Si{sub 2}Ge{sub 2}), Gd{sub 5}(Si{sub 2.09}Ge{sub 1.91}) in their vicinity of first order transformation. MFM images have also been taken on polycrystal sample Gd{sub 5}(Si{sub 2.09}Ge{sub 1.91}) to investigate the transformation process. The results also indicates that the Curie temperature was lower and the thermally-induced strain higher in the sample made from lower purity level Gd starting materials compared with the sample made from high purity Gd metal. TE, MS, MFM and VSM measurements

  11. Atomic long-range order effects on Curie temperature and adiabatic spin-wave dynamics in strained Fe-Co alloy films

    Science.gov (United States)

    Schönecker, Stephan; Li, Xiaoqing; Johansson, Börje; Vitos, Levente

    2016-08-01

    The strained Fe-Co alloy in body-centered tetragonal (bct) structure has raised considerable interest due to its giant uniaxial magnetocrystalline anisotropy energy. On the basis of the classical Heisenberg Hamiltonian with ab initio interatomic exchange interactions, we perform a theoretical study of fundamental finite temperature magnetic properties of Fe1 -xCox alloy films as a function of three variables: chemical composition 0.3 ≤x ≤0.8 , bct geometry [a ,c (a )] arising from in-plane strain and associated out-of-plane relaxation, and atomic long-range order (ALRO). The Curie temperatures TC(x ,a ) obtained from Monte Carlo simulations display a competition between a pronounced dependence on tetragonality, strong ferromagnetism in the Co-rich alloy, and the beginning instability of ferromagnetic order in the Fe-rich alloy when c /a →√{2 } . Atomic ordering enhances TC and arises mainly due to different distributions of atoms in neighboring coordination shells rather than altering exchange interactions significantly. We investigate the ordering effect on the shape of the adiabatic spin-wave spectrum for selected pairs (x ,a ) . Our results indicate that long-wavelength acoustic spin-wave excitations show dependencies on x , a , and ALRO similar to those of TC. The directional anisotropy of the spin-wave stiffness d (x ,a ) peaks in narrow ranges of composition and tetragonality. ALRO exhibits a strong effect on d for near equiconcentration Fe-Co. We also discuss our findings in the context of employing Fe-Co as perpendicular magnetic recording medium.

  12. L’organisation socio-économique des écuries de Chantilly durant la première moitié du XVIIIe siècle

    Directory of Open Access Journals (Sweden)

    Christophe Levadoux

    2009-11-01

    Full Text Available Ordonnée par Louis-Henri de Bourbon-Condé (1692-1740 entre 1719 et 1735, d’après les plans de Jean Aubert, l’érection des écuries de Chantilly s’inscrit dans un plan d’aménagement du site passant par la nouvelle urbanisation du bourg de Chantilly. Leur organisation socio-économique traduit un certain idéal de consommation aristocratique. La diversité des chevaux, la multiplication des voitures, le personnel, les formes, les acteurs, et les modalités de la consommation, soulignent l’originalité et l’importance de cette noble occupation, dont l’étude a été rendue en partie possible grâce aux livres de comptes conservés au musée Condé à Chantilly.Commissioned by Louis-Henri de Bourbon-Condé (1692-1740 between 1719 and 1735, and built from plans drawn up by Jean Aubert, the construction of the Great Stables of Chantilly was an important feature in the site development plan and the urbanisation of the village of Chantilly. Their powerful architecture has shaped the surrounding landscape, creating an impressive vision, and their socio-economic structure reflects a certain ideal in the lifestyle of the aristocracy. The variety of horses, the multitude of carriages, the staff members, the customs and traditions surrounding this lifestyle and those who kept them, highlight the originality and importance of this noble occupation, studies of which have in part been made possible thanks to account books preserved at the Musée Condé in Chantilly.

  13. Curie Point Depth, Geothermal Gradient and Heat-Flow Estimation and Geothermal Anomaly Exploration from Integrated Analysis of Aeromagnetic and Gravity Data on the Sabalan Area, NW Iran

    Science.gov (United States)

    Afshar, A.; Norouzi, G. H.; Moradzadeh, A.; Riahi, M. A.; Porkhial, S.

    2017-03-01

    Prospecting the geothermal resources in northwest of Iran, conducted in 1975, revealed several promising areas and introduced the Sabalan geothermal field as a priority for further studies. The Sabalan Mt., representing the Sabalan geothermal field, is a large stratovolcano which consists of an extensive central edifice built on a probable tectonic horst of underlying intrusive and effusive volcanic rocks. In this study, Curie point depth (CPD), geothermal gradient and heat-flow map were constituted from spectral analysis of the aeromagnetic data for the NW of Iran. The top of the geothermal resource (i.e., the thickness of the overburden) was evaluated by applying the Euler deconvolution method on the residual gravity data. The thickness of the geothermal resource was calculated by subtracting the Euler depths obtained from the CPDs in the geothermal anomalous region. The geothermal anomalous region was defined by the heat-flow value greater than 150 mW/m2. CPDs in the investigated area are found between 8.8 km in the Sabalan geothermal field and 14.1 in the northeast. The results showed that the geothermal gradient is higher than 62 °C/km and the heat-flow is higher than 152 mW/m2 for the geothermal manifestation region; the thickness of the geothermal resource was also estimated to vary between 5.4 and 9.1 km. These results are consistent with the drilling and other geological information. Findings indicate that the CDPs agree with earthquake distribution and the type of thermal spring is related to the depth of the top of the geothermal resource.

  14. Curie Point Depth, Geothermal Gradient and Heat-Flow Estimation and Geothermal Anomaly Exploration from Integrated Analysis of Aeromagnetic and Gravity Data on the Sabalan Area, NW Iran

    Science.gov (United States)

    Afshar, A.; Norouzi, G. H.; Moradzadeh, A.; Riahi, M. A.; Porkhial, S.

    2016-12-01

    Prospecting the geothermal resources in northwest of Iran, conducted in 1975, revealed several promising areas and introduced the Sabalan geothermal field as a priority for further studies. The Sabalan Mt., representing the Sabalan geothermal field, is a large stratovolcano which consists of an extensive central edifice built on a probable tectonic horst of underlying intrusive and effusive volcanic rocks. In this study, Curie point depth (CPD), geothermal gradient and heat-flow map were constituted from spectral analysis of the aeromagnetic data for the NW of Iran. The top of the geothermal resource (i.e., the thickness of the overburden) was evaluated by applying the Euler deconvolution method on the residual gravity data. The thickness of the geothermal resource was calculated by subtracting the Euler depths obtained from the CPDs in the geothermal anomalous region. The geothermal anomalous region was defined by the heat-flow value greater than 150 mW/m2. CPDs in the investigated area are found between 8.8 km in the Sabalan geothermal field and 14.1 in the northeast. The results showed that the geothermal gradient is higher than 62 °C/km and the heat-flow is higher than 152 mW/m2 for the geothermal manifestation region; the thickness of the geothermal resource was also estimated to vary between 5.4 and 9.1 km. These results are consistent with the drilling and other geological information. Findings indicate that the CDPs agree with earthquake distribution and the type of thermal spring is related to the depth of the top of the geothermal resource.

  15. Business Action Learning Tasmania (BALT)--An Account of Practice

    Science.gov (United States)

    Cother, Genevieve; Cother, Robert F.

    2017-01-01

    Business Action Learning Tasmania's (BALT) mission is self-reliant industry development, with diverse companies co-operating to improve their profitability, develop their people and grow the local economy. This is achieved through collaborative action learning, with companies working together on projects of vital importance and sharing the…

  16. Education for All: National Plan of Action, 2003-2015

    Science.gov (United States)

    Online Submission, 2005

    2005-01-01

    Background: The Lao People's Democratic Republic (PDR) Education for All National Plan of Action (EFA NPA) for 2003-2015 seeks to accomplish three major tasks: equitable access, improved quality and relevance and strengthened education management. Purpose: To design a National Education For All Action Plan for basic education in Lao PDR which…

  17. Robotic movement preferentially engages the action observation network

    NARCIS (Netherlands)

    Cross, E.S.; Liepelt, R.; Hamilton, A.F.D.C.; Parkinson, J.; Ramsey, R.; Stadler, W.; Prinz, W.G.

    2012-01-01

    As humans, we gather a wide range of information about other people from watching them move. A network of parietal, premotor, and occipitotemporal regions within the human brain, termed the action observation network (AON), has been implicated in understanding others' actions by means of an

  18. Islamic Thoughts and Individuals’ Actions in the Built Environment

    Directory of Open Access Journals (Sweden)

    Mohd Hamdan, Ahamd

    2014-12-01

    Full Text Available The way Islamic thought has affected an individual’s action based on the effective information in the built environment is a considerable issue. This study argued that Islamic thought in which parts and stages of executing an action is effective. It is an interdisciplinary research with context analysis in order to consider the related psychological and environmental theories and documents derived from the secondary sources. The findings demonstrated that Islamic thought as a determinant factor affects an individual’s action in the built environment from two essential directions, including: 1 its effect through environmental information in the built environment; 2 its effect on the perceptual process of people to execute an action. Consequently, although the perception of people from Islamic thought is very effective in executing an individual’s action, the developers and planners of the built environments in Islamic societies are able to affect an individual’s action by means of design manipulation.

  19. Do People "Pop Out"?

    National Research Council Canada - National Science Library

    Mayer, Katja M; Vuong, Quoc C; Thornton, Ian M

    2015-01-01

    ...? In the current paper we tested whether people in natural scenes attract attention and "pop out" or, alternatively, are at least searched for more efficiently than targets of another category (machines...

  20. Organizing homeless people

    DEFF Research Database (Denmark)

    Anker, Jørgen

    2008-01-01

    People who are homeless belong to some of the most vulnerable, dispersed and disorganized groups in welfare societies. Yet in 2001, a national interest organization of homeless people was formed for the first time in Denmark. This article identifies the processes that facilitated the formation...... of the organization. It focuses on the importance of ideological and institutional conditions and changes, and it stresses the importance of alliances between progressive actors in the field and in the political-administrative system, in addition to the presence of dedicated activists among people who are or have...... been homeless. The analysis may thus serve as a case of inspiration for activists and professionals who want to improve homeless people's opportunities for participation in other national settings....

  1. PEOPLE/POINTS

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Lifetime Achievement Laureate Sun Jiadong, a senior Chinese expert in carrier rocket and satellite technology, received a Lifetime Achievement Award as part of the 2010 CCTV Economic People of the Year program.

  2. OFDA People-Trak

    Data.gov (United States)

    US Agency for International Development — People-Trak HRIS is a workforce management tool. It will provide tracking and management tools for recruiting, training, contact info, performance, travel monitoring...

  3. DAPs: Deep Action Proposals for Action Understanding

    KAUST Repository

    Escorcia, Victor

    2016-09-17

    Object proposals have contributed significantly to recent advances in object understanding in images. Inspired by the success of this approach, we introduce Deep Action Proposals (DAPs), an effective and efficient algorithm for generating temporal action proposals from long videos. We show how to take advantage of the vast capacity of deep learning models and memory cells to retrieve from untrimmed videos temporal segments, which are likely to contain actions. A comprehensive evaluation indicates that our approach outperforms previous work on a large scale action benchmark, runs at 134 FPS making it practical for large-scale scenarios, and exhibits an appealing ability to generalize, i.e. to retrieve good quality temporal proposals of actions unseen in training.

  4. Policing Transgender People

    Directory of Open Access Journals (Sweden)

    Toby Miles-Johnson

    2015-04-01

    Full Text Available Police policy documents often articulate strategies and approaches that police organizations want to implement in their efforts to break down barriers with minority groups. However, most police policy documents are written for police audiences and not for members of the public. Police policy documents serve as a reflection of the aspirations of the agency and not necessarily the practice of the officers. Differential policing has been a salient experience for members of transgender communities because, as individuals who express gender in ways that deviate from the norm, they have experienced numerous documented cases of police mismanaged practice. In Australia, achieving police reform in the area of policing of diverse community groups has been difficult as new initiatives implemented to educate police officers about diverse groups such as transgender communities are scarce. My study sought to analyze a police policy document to assess how one police agency’s policy aspires to shape police contact/experiences with transgender people and how this document might shape intergroup identity differences between transgender people and the police. It is argued that the policy document will negatively affect police perceptions of transgender people and may enhance adverse perceptions of intergroup difference between police and transgender people. I also argue that using this document to achieve police reform in the area of policing of transgender people will be problematic as the policy document lacks substantial procedural guidelines regarding interaction with transgender people and may not favorably constrain discretionary police power.

  5. All in action

    CERN Document Server

    Annila, Arto

    2010-01-01

    The principle of least action provides a holistic worldview in which nature in its entirety and every detail is pictured in terms of actions. Each and every action is ultimately composed of one or multiples of the most elementary action which corresponds to the Planck's constant. Elements of space are closed actions, known as fermions, whereas elements of time are open actions, known as bosons. The actions span energy landscape, the Universe which evolves irreversibly according to the 2nd law of thermodynamics by diminishing density differences in least time. During the step-by-step evolution densely-curled actions unfold by opening up and expelling one or multiple elementary actions to their surrounding sparser space. The manifold's varieties process from one symmetry group to another until the equivalence to their dual, i.e., the surrounding density has been attained. The scale-free physical portrayal of nature does not recognize any fundamental difference between fundamental particles and fundamental force...

  6. Responses to irrational actions in action observation and mentalising networks of the human brain.

    Science.gov (United States)

    Marsh, Lauren E; Mullett, Timothy L; Ropar, Danielle; Hamilton, Antonia F de C

    2014-12-01

    By observing other people, we can often infer goals and motivations behind their actions. This study examines the role of the action observation network (AON) and the mentalising network (MZN) in the perception of rational and irrational actions. Past studies in this area report mixed results, so the present paper uses new stimuli which precisely control motion path, the social form of the actor and the rationality of the action. A cluster in medial prefrontal cortex and a large cluster in the right inferior parietal lobule extending to the temporoparietal junction distinguished observation of irrational from rational actions. Activity within the temporoparietal region also correlated on a trial-by-trial basis with each participant's judgement of action rationality. These findings demonstrate that observation of another person performing an irrational action engages both action observation and mentalising networks. Our results advance current theories of action comprehension and the roles of action observation and mentalising networks in this process. Copyright © 2014 Elsevier Inc. All rights reserved.

  7. Neural basis of understanding communicative actions: Changes associated with knowing the actor's intention and the meanings of the actions.

    Science.gov (United States)

    Möttönen, Riikka; Farmer, Harry; Watkins, Kate E

    2016-01-29

    People can communicate by using hand actions, e.g., signs. Understanding communicative actions requires that the observer knows that the actor has an intention to communicate and the meanings of the actions. Here, we investigated how this prior knowledge affects processing of observed actions. We used functional MRI to determine changes in action processing when non-signers were told that the observed actions are communicative (i.e., signs) and learned the meanings of half of the actions. Processing of hand actions activated the left and right inferior frontal gyrus (IFG, BA 44 and 45) when the communicative intention of the actor was known, even when the meanings of the actions remained unknown. These regions were not active when the observers did not know about the communicative nature of the hand actions. These findings suggest that the left and right IFG play a role in understanding the intention of the actor, but do not process visuospatial features of the communicative actions. Knowing the meanings of the hand actions further enhanced activity in the anterior part of the IFG (BA 45), the inferior parietal lobule and posterior inferior and middle temporal gyri in the left hemisphere. These left-hemisphere language regions could provide a link between meanings and observed actions. In sum, the findings provide evidence for the segregation of the networks involved in the neural processing of visuospatial features of communicative hand actions and those involved in understanding the actor's intention and the meanings of the actions.

  8. Interrompendo rotas, higienizando pessoas: técnicas sanitárias e seres humanos na ação de guardas e visitadoras sanitárias Interrupting routes, hygienizing people: sanitary techniques and human beings in the actions of sanitary guards and educators

    Directory of Open Access Journals (Sweden)

    Carla Costa Teixeira

    2008-06-01

    Full Text Available O interesse maior deste artigo é compreender as conexões entre o manejo das tecnologias sanitárias e o manejo das pessoas, por meio das chamadas ações educativas vinculadas aos objetivos orientadores das técnicas implantadas. Com este objetivo, analiso a conformação de dois profissionais centrais à atuação do Serviço Especial de Saúde (1942-1960 e que parecem expressar em sua própria existência o vínculo indissolúvel entre concepções técnicas e concepções de ser humano: o guarda sanitário e a visitadora sanitária. Por meio dos manuais e programas de cursos utilizados na formação desses profissionais, busco compreender valores e concepções sobre o processo saúde/doença e as relações entre ser humano e ambiente vigentes à época, bem como acerca do próprio exercício das funções de guardas e educadoras sanitárias.The main interest of this article lies in understanding the connections between managing sanitation technologies and managing people by means of so-called health education interventions towards the same purpose and aim. It analyzes the training of two categories of professionals who were of crucial importance for the actions of the Special Service of Health (1942-1960 and whose existence as such seems to express the indissoluble link between the concepts technique and human being: sanitation guards and sanitation educators. By investigating the instruction manuals and course programs, this study aims at grasping the values and ideas about the health/disease process and the relationship between the human being and the environment valid at that time, as well as at understanding the functions of the sanitation guards and educators.

  9. Words speak louder: conforming to preferences more than actions.

    Science.gov (United States)

    Tu, Yanping; Fishbach, Ayelet

    2015-08-01

    Whereas people generally conform to others' choices, this research documents that conformity decreases once others have acted on their chosen options. It suggests words speak louder than actions-people are more likely to conform to others' preferences than their actions. Specifically, people are less likely to follow another person's food choice if that person has already eaten his or her selected food (Study 1), and are less likely to follow others' choices of household items if these choices are framed in terms of action (others "want to have it") rather than preference (others "like it"; Study 2). People's tendency to mentally share others' actions causes the decrease in conformity. Indeed, people recall greater past consumption of items that others have had (Study 3), choose differently only when they can complement (vs. contradict) what others have (Study 4), and are more strongly affected by the choices of those close to them (vs. strangers; Study 5). Finally, even when information about others' actions and preferences are simultaneously available (e.g., in online shopping and the consumption of social media), people are more likely to follow what others prefer, rather than what others have (Study 6).

  10. 8 HABITS OF INFLUENTIAL PEOPLE

    National Research Council Canada - National Science Library

    Travis Bradberry

    2017-01-01

    .... It's a labour of love that influential people pursue behind the scenes, every single day. And while what people are influenced by changes with the season, the unique habits of influential people remain constant...

  11. POVERTY IN AND ABOUT THE AMERINDIOS PEOPLES

    Directory of Open Access Journals (Sweden)

    Luis Oquendo

    2012-11-01

    Full Text Available Poverty has come to be understood as the lack of income to cover basic needs. The World Bank (2002 defined it as hunger, while ECLAC (2000 within a more relative framework, he said, consists of "lack of economic and social resources that the referential society considers basic." Are indigenous peoples considered poor according to these conceptual frameworks? The episteme of the indigenous peoples is built with another language / language which will fit into these paradigms. However, work as an activity, as action is the universal difference between man and animals. The man when he works uses the language because the work itself is a language and constitutes the tool to organize and benefit from nature. The language of Amerindian peoples has been displaced by modernism. How does Amerindian peoples participate in the work if their language does not participate in the institutions of wage-labor societies? With these questions I will address the differentiality of the term poverty in and on Amerindian peoples.

  12. Recovery Action Mapping Tool

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Recovery Action Mapping Tool is a web map that allows users to visually interact with and query actions that were developed to recover species listed under the...

  13. Various Actions for Pregeometry

    Science.gov (United States)

    Terazawa, H.

    1991-08-01

    Various actions for pregeometry are presented and compared. The ``space-field identity'' which equates the n-beins to the derivatives of fundamental scalars is derived from a simple action but seems to be too restrictive to be practical.

  14. Action Rules Mining

    CERN Document Server

    Dardzinska, Agnieszka

    2013-01-01

    We are surrounded by data, numerical, categorical and otherwise, which must to be analyzed and processed to convert it into information that instructs, answers or aids understanding and decision making. Data analysts in many disciplines such as business, education or medicine, are frequently asked to analyze new data sets which are often composed of numerous tables possessing different properties. They try to find completely new correlations between attributes and show new possibilities for users.   Action rules mining discusses some of data mining and knowledge discovery principles and then describe representative concepts, methods and algorithms connected with action. The author introduces the formal definition of action rule, notion of a simple association action rule and a representative action rule, the cost of association action rule, and gives a strategy how to construct simple association action rules of a lowest cost. A new approach for generating action rules from datasets with numerical attributes...

  15. Inferring action structure and causal relationships in continuous sequences of human action.

    Science.gov (United States)

    Buchsbaum, Daphna; Griffiths, Thomas L; Plunkett, Dillon; Gopnik, Alison; Baldwin, Dare

    2015-02-01

    In the real world, causal variables do not come pre-identified or occur in isolation, but instead are embedded within a continuous temporal stream of events. A challenge faced by both human learners and machine learning algorithms is identifying subsequences that correspond to the appropriate variables for causal inference. A specific instance of this problem is action segmentation: dividing a sequence of observed behavior into meaningful actions, and determining which of those actions lead to effects in the world. Here we present a Bayesian analysis of how statistical and causal cues to segmentation should optimally be combined, as well as four experiments investigating human action segmentation and causal inference. We find that both people and our model are sensitive to statistical regularities and causal structure in continuous action, and are able to combine these sources of information in order to correctly infer both causal relationships and segmentation boundaries.

  16. On Action Theory Change

    OpenAIRE

    Varzinczak, Ivan José

    2014-01-01

    As historically acknowledged in the Reasoning about Actions and Change community, intuitiveness of a logical domain description cannot be fully automated. Moreover, like any other logical theory, action theories may also evolve, and thus knowledge engineers need revision methods to help in accommodating new incoming information about the behavior of actions in an adequate manner. The present work is about changing action domain descriptions in multimodal logic. Its contribution is threefold: ...

  17. Action Theory Evolution

    OpenAIRE

    Varzinczak, Ivan

    2008-01-01

    Like any other logical theory, domain descriptions in reasoning about actions may evolve, and thus need revision methods to adequately accommodate new information about the behavior of actions. The present work is about changing action domain descriptions in propositional dynamic logic. Its contribution is threefold: first we revisit the semantics of action theory contraction that has been done in previous work, giving more robust operators that express minimal change based on a notion of dis...

  18. Social dataset analysis and mapping tools for Risk Perception: resilience, people preparation and communication tools

    Science.gov (United States)

    Peters-Guarin, Graciela; Garcia, Carolina; Frigerio, Simone

    2010-05-01

    Perception has been identified as resource and part of the resilience of a community to disasters. Risk perception, if present, may determine the potential damage a household or community experience. Different levels of risk perception and preparedness can influence directly people's susceptibility and the way they might react in case of an emergency caused by natural hazards. In spite of the profuse literature about risk perception, works to spatially portray this feature are really scarce. The spatial relationship to danger or hazard is being recognised as an important factor of the risk equation; it can be used as a powerful tool either for better knowledge or for operational reasons (e.g. management of preventive information). Risk perception and people's awareness when displayed in a spatial format can be useful for several actors in the risk management arena. Local authorities and civil protection can better address educational activities to increase the preparation of particularly vulnerable groups of clusters of households within a community. It can also be useful for the emergency personal in order to optimally direct the actions in case of an emergency. In the framework of the Marie Curie Research Project, a Community Based Early Warning System (CBEWS) it's been developed in the Mountain Community Valtellina of Tirano, northern Italy. This community has been continuously exposed to different mass movements and floods, in particular, a large event in 1987 which affected a large portion of the valley and left 58 dead. The actual emergency plan for the study area is composed by a real time, highly detailed, decision support system. This emergency plan contains detailed instructions for the rapid deployment of civil protection and other emergency personal in case of emergency, for risk scenarios previously defined. Especially in case of a large event, where timely reaction is crucial for reducing casualties, it is important for those in charge of emergency

  19. Action and Interactiv research

    DEFF Research Database (Denmark)

    Nielsen, Kurt Aagaard; Svensson, Lennart

    The text is written as a first version of editors introduction to a book about action research/interactive research in Nordic countries. You can read abouttrends and contradictions in the history of action research.The authors question the trends and demands a more explicit critical approach...... to actual action research/interactive research....

  20. Action Research for Democracy

    DEFF Research Database (Denmark)

    , to innovation policies combining Action Research with gender science. In the second part of the book epistemological and ontological dimensions of Action Research are discussed addressing questions of validity criteria related to Action Research, the transformation of knowledge institutions and the specific...

  1. Conservation Action Handbook.

    Science.gov (United States)

    National Rifle Association, Washington, DC.

    Conservation problems are identified, with some suggestions for action. General areas covered are: Wildlife Conservation, Soil Conservation, Clean Water, Air Pollution Action, and Outdoor Recreation Action. Appendices list private organizations or agencies concerned with natural resource use and/or management, congressional committees considering…

  2. Differential Equations as Actions

    DEFF Research Database (Denmark)

    Ronkko, Mauno; Ravn, Anders P.

    1997-01-01

    We extend a conventional action system with a primitive action consisting of a differential equation and an evolution invariant. The semantics is given by a predicate transformer. The weakest liberal precondition is chosen, because it is not always desirable that steps corresponding to differential...... actions shall terminate. It is shown that the proposed differential action has a semantics which corresponds to a discrete approximation when the discrete step size goes to zero. The extension gives action systems the power to model real-time clocks and continuous evolutions within hybrid systems....

  3. Independent neural computation of value from other people's confidence

    OpenAIRE

    Campbell-Meiklejohn, Daniel; Simonsen, Arndis; Chris D Frith; Daw, Nathaniel D.

    2017-01-01

    Expectation of reward can be shaped by the observation of actions and expressions of other people in one's environment. A person's apparent confidence in the likely reward of an action, for instance, makes qualities of their evidence, not observed directly, socially accessible. This strategy is computationally distinguished from associative learning methods that rely on direct observation, by its use of inference from indirect evidence. In twenty-three healthy human subjects, we isolated effe...

  4. Why Do People Act Like the Proverbial Ostrich? Investigating the Reasons That People Provide for Not Monitoring Their Goal Progress

    OpenAIRE

    Chang, B P; Webb, T.L.; Benn, Y.

    2017-01-01

    Two studies examined peoples' reasons for not monitoring their progress toward their personal goals—a phenomenon that has been termed “the ostrich problem” (Webb et al., 2013). Study 1 used factor analysis to organize the reasons that people gave for not monitoring their goal progress, resulting in 10 factors. The most strongly endorsed reasons were: (a) that information on goal progress would demand a change in beliefs, or (b) undesired action; (c) that progress was poor, and (d) that thinki...

  5. Action Theory Evolution

    CERN Document Server

    Varzinczak, Ivan

    2008-01-01

    Like any other logical theory, domain descriptions in reasoning about actions may evolve, and thus need revision methods to adequately accommodate new information about the behavior of actions. The present work is about changing action domain descriptions in propositional dynamic logic. Its contribution is threefold: first we revisit the semantics of action theory contraction that has been done in previous work, giving more robust operators that express minimal change based on a notion of distance between Kripke-models. Second we give algorithms for syntactical action theory contraction and establish their correctness w.r.t. our semantics. Finally we state postulates for action theory contraction and assess the behavior of our operators w.r.t. them. Moreover, we also address the revision counterpart of action theory change, showing that it benefits from our semantics for contraction.

  6. Memories of unethical actions become obfuscated over time.

    Science.gov (United States)

    Kouchaki, Maryam; Gino, Francesca

    2016-05-31

    Despite our optimistic belief that we would behave honestly when facing the temptation to act unethically, we often cross ethical boundaries. This paper explores one possibility of why people engage in unethical behavior over time by suggesting that their memory for their past unethical actions is impaired. We propose that, after engaging in unethical behavior, individuals' memories of their actions become more obfuscated over time because of the psychological distress and discomfort such misdeeds cause. In nine studies (n = 2,109), we show that engaging in unethical behavior produces changes in memory so that memories of unethical actions gradually become less clear and vivid than memories of ethical actions or other types of actions that are either positive or negative in valence. We term this memory obfuscation of one's unethical acts over time "unethical amnesia." Because of unethical amnesia, people are more likely to act dishonestly repeatedly over time.

  7. People's Theatre in Amerika.

    Science.gov (United States)

    Taylor, Karen Malpede

    A history of the people's theatre movement in this country from the early 1920s to the early 1970s, this book deals with the structural and thematic connections between the radical theatre of the twenties and thirties and current work of such revolutionary theatres as the Living Theatre, Open Theatre, Bread and Puppet Theatre, El Teatro Campesino,…

  8. Serving the People

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The civil service is still popular but not as much as it once was chinese people in recent years have shown an increased interest in finding a "red-collar job," a widespread Internet term nowadays meaning a public service job.

  9. HIV among Transgender People

    Science.gov (United States)

    ... Prevention VIH En Español Get Tested Find an HIV testing site near you. Enter ZIP code or city Follow HIV/AIDS CDC HIV CDC HIV/AIDS See RSS | ... Email Updates on HIV Syndicated Content Website Feedback HIV Among Transgender People Format: Select One PDF [227K] ...

  10. PEOPLE/POINTS

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Honored Artist Tan Jing, China’s well-known singer, was honored as one of the 2011 China Cultural figures, a prize jointly conferred by the Chinese Culture Promotion Society and Phoenix TV in Hong Kong. Set up in 2009, the title is for honoring outstanding people in preserving

  11. People's Theatre in Amerika.

    Science.gov (United States)

    Taylor, Karen Malpede

    A history of the people's theatre movement in this country from the early 1920s to the early 1970s, this book deals with the structural and thematic connections between the radical theatre of the twenties and thirties and current work of such revolutionary theatres as the Living Theatre, Open Theatre, Bread and Puppet Theatre, El Teatro Campesino,…

  12. Drugs and Young People

    Science.gov (United States)

    ... fully developed. As a result, the brains of young people may be more susceptible to drug abuse and addiction than adult brains. Abused drugs include Amphetamines Anabolic ... better to prevent drug abuse in the first place. NIH: National Institute on Drug Abuse

  13. Serving the People

    Institute of Scientific and Technical Information of China (English)

    YIN PUMIN

    2010-01-01

    @@ Chinese people in recent years have shown an increased ,interest in finding a "red-collar job, a widespread Internet term nowadays meaning a public service job. Official figures show the number of applicants for the national civil servant examination, which selects candidates for government departments, has surged from 87,000 in 2003 to 1.44 million in 2009.

  14. People and society

    NARCIS (Netherlands)

    Sukkel, W.; Hommes, M.

    2009-01-01

    practiceOrganic agriculture has excellent opportunities to create strong links between the environment it operates in, the people who live there and local nature and landscape. The Dutch organic sector aspires to strengthen these links and it is already well on its way. Together with researchers and

  15. The peopling of Greenland

    DEFF Research Database (Denmark)

    Pereira, Vania; Tomas Mas, Carmen; Sanchez, Juan J

    2015-01-01

    The peopling of Greenland has a complex history shaped by population migrations, isolation and genetic drift. The Greenlanders present a genetic heritage with components of European and Inuit groups; previous studies using uniparentally inherited markers in Greenlanders have reported evidence of ...

  16. Collective Action Typologies and Reforestation in Indigenous Community of Biak-Papua

    OpenAIRE

    Henry Silka Innah; Didik Suharjito; Arya Hadi Dharmawan; Dudung Darusman

    2013-01-01

    While there are issues in deforestation with interesting reports on reforestation in Indonesia's forest policy, the situation in Papua remains understudied.   This paper builds on the themes of collective action and reforestation from indigenous people of Papua. Collective action can be understood from various perspectives and one of them can be studied within Gamson's socio-psychology framework from social movement theories. The results showed that: collective action in indigenous people of ...

  17. Minimising barriers to dental care in older people

    Directory of Open Access Journals (Sweden)

    Gallagher Jennifer E

    2008-03-01

    Full Text Available Abstract Background Older people are increasingly retaining their natural teeth but at higher risk of oral disease with resultant impact on their quality of life. Socially deprived people are more at risk of oral disease and yet less likely to take up care. Health organisations in England and Wales are exploring new ways to commission and provide dental care services in general and for vulnerable groups in particular. This study was undertaken to investigate barriers to dental care perceived by older people in socially deprived inner city area where uptake of care was low and identify methods for minimising barriers in older people in support of oral health. Methods A qualitative dual-methodological approach, utilising both focus groups and individual interviews, was used in this research. Participants, older people and carers of older people, were recruited using purposive sampling through day centres and community groups in the inner city boroughs of Lambeth, Southwark and Lewisham in South London. A topic guide was utilised to guide qualitative data collection. Informants' views were recorded on tape and in field notes. The data were transcribed and analysed using Framework Methodology. Results Thirty-nine older people and/or their carers participated in focus groups. Active barriers to dental care in older people fell into five main categories: cost, fear, availability, accessibility and characteristics of the dentist. Lack of perception of a need for dental care was a common 'passive barrier' amongst denture wearers in particular. The cost of dental treatment, fear of care and perceived availability of dental services emerged to influence significantly dental attendance. Minimising barriers involves three levels of action to be taken: individual actions (such as persistence in finding available care following identification of need, system changes (including reducing costs, improving information, ensuring appropriate timing and location of

  18. All in Action

    Directory of Open Access Journals (Sweden)

    Arto Annila

    2010-11-01

    Full Text Available The principle of least action provides a holistic worldview in which Nature in its entirety and every detail is described in terms of actions. Each and every action is ultimately composed of one or multiple of the most elementary actions which relates to Planck’s constant. Elements of space are closed actions, known as fermions, whereas elements of time are open actions, known as bosons. The actions span an energy landscape, the Universe, which evolves irreversibly according to the 2nd law of thermodynamics by diminishing energy density differences in least time. During evolution densely-curled actions unfold step-by-step when opening up and expelling one or multiple elementary actions to their surrounding sparser space. The energy landscape will process from one symmetry group to another until the equivalence to its dual, i.e., the surrounding density has been attained. The scale-free physical portrayal of nature in terms of actions does not recognize any fundamental difference between fundamental particles and fundamental forces. Instead a plethora of particles and a diaspora of forces are perceived merely as diverse manifestations of a natural selection for various mechanisms and ways to decrease free energy in the least time.

  19. From Disunited to Joint Action

    Directory of Open Access Journals (Sweden)

    Kaarina Mönkkönen

    2015-08-01

    Full Text Available Inter-organizational collaboration can be understood as a product of sets of conversations that draw on existing discourses. This article examines one public organization going through a fundamental organizational change. We describe the process of construction of organizational identity after a merger by using a model describing identified forms of interaction: (a formally together, (b unidirectional interaction, (c juxtapositions, (d construction of commonality, and (e the state of joint action. There is a link between the construction of a more collectively interpreted identity and the way in which people communicate, create relationships, and network. This article highlights the relevance and meaning of conscious identity work in the process: The management’s ability and willingness to create forums for dialogue and social interaction creates potential for construction of a collectively interpreted organizational identity and promotes cooperation and collaboration.

  20. Mechanism for Curie temperature variation in La{sub x}Sr{sub 2-x}FeMoO{sub 6} and Ca{sub x}Sr{sub 2-x}FeMoO{sub 6}

    Energy Technology Data Exchange (ETDEWEB)

    Frontera, C.; Rubi, D.; Navarro, J.; Garcia-Munoz, J.L.; Ritter, C.; Fontcuberta, J

    2004-07-15

    By means of high-resolution neutron powder diffraction at 10 K, we have characterized the structural details of La{sub x}Sr{sub 2-x}FeMoO{sub 6} (0{<=}x{<=}0.5) and Ca{sub x}Sr{sub 2-x}FeMoO{sub 6} (0{<=}x{<=}0.6) series of compounds. The Curie temperature (T{sub C}) raises in the La series and slightly decreases in the Ca one. The enhancement of T{sub C} in the La series is attributed to the effect of the conduction band-filling when doping with La.

  1. Characterization of mechano-thermally synthesized Curie temperature-adjusted La{sub 0.8}Sr{sub 0.2}MnO{sub 3} nanoparticles coated with (3-aminopropyl) triethoxysilane

    Energy Technology Data Exchange (ETDEWEB)

    Salili, S.M. [Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH 44242 (United States); School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Ataie, A., E-mail: aataie@ut.ac.ir [School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Barati, M.R. [School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Department of Materials Engineering, Monash University, Clayton, Victoria 3800 (Australia); Sadighi, Z. [School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)

    2015-08-15

    This research aimed to synthesize nanostructured strontium-doped lanthanum manganite, La{sub 0.8}Sr{sub 0.2}MnO{sub 3} (LSMO), with its Curie temperature (T{sub c}) adjusted to the therapeutic range, through a mechanothermal route. In order to investigate the effect of heat treatment temperature and duration on the resulting crystallite size, morphology, magnetic behavior and Curie temperature, the starting powder mixture was milled in a planetary ball mill before being subsequently heat treated at distinct temperatures for different time lengths. The composition, morphology, and magnetic behavior were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and vibrating sample magnetometer (VSM). In addition, magnetic properties were further investigated using an alternating current (AC) susceptometer and thermo-magnetic analyzer. 20 h of milling produced a crystallite size reduction leading to a decrease in the heat treatment temperature of LSMO synthesis to 800 °C. Moreover, SEM analysis has shown the morphology of a strong agglomeration of fine nanoparticles. HRTEM showed clear lattice fringes of high crystallinity. The mean crystallite and particle size of 20-hour milled sample heat treated at 1100 °C for 10 h are relatively 69 and 100 nm, respectively. The VSM data at room temperature, indicated a paramagnetic behavior for samples heat treated at 800 °C. However, by increasing heat treatment temperature to 1100 °C, LSMO indicates a ferromagnetic behavior with well-adjusted Curie temperature of 320 K, suitable for hyperthermia applications. Also, reentrant spin glass (RSG) behavior has been found in heat treated samples. The particles are coated with (3-aminopropyl) triethoxysilane (APTES) for biocompatibility purposes; Fourier transform infrared spectroscopy (FTIR) and thermo

  2. The Autonomy-Authority Duality of Shared Decision-Making in Youth Environmental Action

    Science.gov (United States)

    Schusler, Tania M.; Krasny, Marianne E.; Decker, Daniel J.

    2017-01-01

    While environmental action is recognized as an effective approach for developing young people's capabilities as citizens and contributing to environmental improvements, little research has addressed how adults facilitate youth action projects. Environmental action involves a partnership among youth and adults characterized by shared…

  3. Improving the oral health of older people

    DEFF Research Database (Denmark)

    Petersen, Poul Erik; Yamamoto, Tatsuo

    2005-01-01

    changing burden of chronic diseases in old age. Chronic disease and most oral diseases share common risk factors. Globally, poor oral health amongst older people has been particularly evident in high levels of tooth loss, dental caries experience, and the prevalence rates of periodontal disease, xerostomia...... and oral precancer/cancer. The negative impact of poor oral conditions on the quality of life of older adults is an important public health issue, which must be addressed by policy-makers. The means for strengthening oral health programme implementation are available; the major challenge is therefore...... to translate knowledge into action programmes for the oral health of older people. The World Health Organization recommends that countries adopt certain strategies for improving the oral health of the elderly. National health authorities should develop policies and measurable goals and targets for oral health...

  4. The Right to Health of Older People.

    Science.gov (United States)

    Baer, Britta; Bhushan, Anjana; Taleb, Hala Abou; Vasquez, Javier; Thomas, Rebekah

    2016-04-01

    A focus on the right to the enjoyment of the highest attainable standard of health (hereinafter, "the right to health") draws attention to the health needs of older people, including the most marginalized among them. Many factors that influence vulnerability or impede the enjoyment of health and access to quality services result from an inability to freely exercise these human rights. A human rights approach can help to address the legal, social, and structural barriers to good health for older persons, clarifying the legal obligations of State and non-State actors to uphold and respect these rights. However, despite growing impetus for action, this area has historically received limited attention. Drawing on practice examples from different regions, this article unpacks the meaning of the right to health and other related human rights of older people in practice, covering both health care and underlying determinants of their health. Questions of availability, accessibility, acceptability, and quality are highlighted from the perspective of older people's health and well-being. The article brings together knowledge, principles, norms, and standards from the human rights law, health, and ageing arenas. By making links between these arenas, it is hoped that the article fills a gap in thinking on how to achieve the progressive realization of the right to health of older people and the effective promotion and protection of their other related human rights, which are crucial for the enjoyment of health.

  5. Antisymmetric string actions

    Science.gov (United States)

    Aragone, C.

    1986-12-01

    An action is presented for the free bosonic string on external flat space in terms of an antisymmetric second-rank string background tensor which is classically equivalent to the Nambu-Goto action. Both action and field equations are entirely described in terms of 2D world-sheet forms, without any reference to a 2D metric tensor background. The analysis of its canonical formulation shows how the quadratic Virasoro constraints are generated in this case and what their connection with the Bianchi identities are. Since in the orthonormal gauge the reduced action coincides with the standard one, it has the same critical dimension D = 26. The existence of an interaction term of a purely geometric structure stemming in the extrinsic curvature is pointed out. Its action and the new string field equations are then derived. This polynomial antisymmetric string action is uniformly generalized in order to describe d Apartado 80659, Caracas 1080A, Venezuela.

  6. Action in Introductory Physics

    CERN Document Server

    McGinness, Lachlan P

    2015-01-01

    We have investigated the teaching and learning of the stationary action formulation of classical physics in a first-year university class. Instruction proceeded from the many-paths approach to quantum physics through to ray optics, classical mechanics, and relativity. Student learning and misconceptions were studied with quantitative and qualitative techniques. In particular, an action concept inventory was developed through a process of expert consultation and student feedback. Students reported action physics to be accessible, interesting and valuable.

  7. Monsters are people too.

    Science.gov (United States)

    Levy, J; Foulsham, T; Kingstone, A

    2013-02-23

    Animals, including dogs, dolphins, monkeys and man, follow gaze. What mediates this bias towards the eyes? One hypothesis is that primates possess a distinct neural module that is uniquely tuned for the eyes of others. An alternative explanation is that configural face processing drives fixations to the middle of peoples' faces, which is where the eyes happen to be located. We distinguish between these two accounts. Observers were presented with images of people, non-human creatures with eyes in the middle of their faces (`humanoids') or creatures with eyes positioned elsewhere (`monsters'). There was a profound and significant bias towards looking early and often at the eyes of humans and humanoids and also, critically, at the eyes of monsters. These findings demonstrate that the eyes, and not the middle of the head, are being targeted by the oculomotor system.

  8. Art for the People

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Low-price performance tickets a big hit with Beijing’s budget conscious concert goers It was eight o’clock on the morning of January 1,one and a half hours be- fore standing tickets for the National Grand Theater were to go on sale for that night’s New Year Concert and al- ready a crowd of more than 500 people milled around outside the venue’s ticket office. Despite the sub-zero temperatures

  9. Parasites, Plants, and People.

    Science.gov (United States)

    Johnson, Marion; Moore, Tony

    2016-06-01

    Anthelminthic resistance is acknowledged worldwide and is a major problem in Aotearoa New Zealand, thus alternative parasite management strategies are imperative. One Health is an initiative linking animal, human, and environmental health. Parasites, plants, and people illustrate the possibilities of providing diverse diets for stock thereby lowering parasite burdens, improving the cultural wellbeing of a local community, and protecting the environment. Copyright © 2016 Elsevier Ltd. All rights reserved.

  10. Talk and Action

    DEFF Research Database (Denmark)

    Christensen, Lars Thøger; Morsing, Mette; Thyssen, Ole

    The aim of this paper is to analyze the relationship between organizational talk and action. Focusing in particular on the temporal dimension of this relationship, that is, the potential for talk to become action over time, we put forward ideal types of organizational strategies for possible talk......-action relationships. While we illustrate our theoretical points with examples from both corporate and political contexts, we draw especially on the field of corporate social responsibility (as an extreme case) where expectations of consistency between talk and actions are most explicitly pronounced....

  11. Action principles in nature

    Science.gov (United States)

    Barrow, John D.; Tipler, Frank J.

    1988-01-01

    Physical theories have their most fundamental expression as action integrals. This suggests that the total action of the universe is the most fundamental physical quantity, and hence finite. In this article it is argued that finite universal action implies that the universe is spatially closed. Further, the possible spatial topologies, the types of matter that can dominate the early universe dynamics, and the form of any quadratic additions to the lagrangian of general relativity are constrained. Initial and final cosmological curvature singularities are required to avoid a universal action singularity.

  12. Action principles in nature

    Energy Technology Data Exchange (ETDEWEB)

    Barrow, J.D.; Tipler, F.J.

    1988-01-07

    Physical theories have their most fundamental expression as action integrals. This suggests that the total action of the Universe is the most fundamental physical quantity, and hence finite. In this article it is argued that finite universal action implies that the Universe is spatially closed. Further, the possible spatial topologies, the types of matter that can dominate the early universe dynamics, and the form of any quadratic additions to the lagrangian of general relativity are constrained. Initial and final cosmological curvature singularities are required to avoid a universal action singularity.

  13. Perception, Action, and Consciousness

    DEFF Research Database (Denmark)

    What is the relationship between perception and action, between an organism and its environment, in explaining consciousness? These are issues at the heart of philosophy of mind and the cognitive sciences. This book explores the relationship between perception and action from a variety of interdi......What is the relationship between perception and action, between an organism and its environment, in explaining consciousness? These are issues at the heart of philosophy of mind and the cognitive sciences. This book explores the relationship between perception and action from a variety...

  14. CHAOTIC GROUP ACTIONS

    Institute of Scientific and Technical Information of China (English)

    ShiEnhui; ZhouLizhen; ZhouYoucheng

    2003-01-01

    It is proved that there is no chaotic group actions on any topological space with free arc.In this paper the chaotic actions of the group like G×F,where F is a finite group,are studied.In particular,under a suitable assumption ,if F is a cyclic group,then the topological space which admits a chaotic action of Z×F must admit a chatotic homeomorphism.A topological space which admits a chaotic group action but admits no chaotic horneomorphism is constructed.

  15. Effective computer training for people with disability

    Directory of Open Access Journals (Sweden)

    Kaveh Farbeh-Tabrizi

    Full Text Available This paper describes the development of computer courses at Methodist City Action computer school for students with psychological and physical disabilities and discusses the motivation behind developing these courses and the original research and development which led to their establishment. It also outlines methods of delivery and the impact of these courses on the students\\' quality of life, independence, social inclusion, literacy, numeracy and employment status. This research was carried out by using available literature found from local libraries and Internet, interviews and classroom observations, and concludes that there is an apparent lack of participation in tertiary education from people with disabilities in New Zealand.

  16. Technology for helping people

    CERN Multimedia

    Rosaria Marraffino

    2014-01-01

    The first THE Port hackathon problem-solving workshop was held at CERN from 31 October to 2 November in the framework of the 60th anniversary celebrations. The aim of the event was to develop technological projects that can help to solve the day-to-day needs of people living in areas of the planet that experience conflicts or natural disasters.   Collage of shots from THE Port hackathon. Credit: THE Port association The event was dedicated to humanitarian and social topics inspired by members of non-governmental organisations‬. “There is plenty of room for technology to help in humanitarian fields. That’s why we came up with the idea of bringing people together to work on these topics,” explains Ines Knäpper, Project Manager of THE Port hackathon. “We started six months ago setting up THE Port association.* The success of the event was only possible because of the joint effort of a team of roughly twenty people. They were inspired by the aim...

  17. Do People "Pop Out"?

    Science.gov (United States)

    Mayer, Katja M; Vuong, Quoc C; Thornton, Ian M

    2015-01-01

    The human body is a highly familiar and socially very important object. Does this mean that the human body has a special status with respect to visual attention? In the current paper we tested whether people in natural scenes attract attention and "pop out" or, alternatively, are at least searched for more efficiently than targets of another category (machines). Observers in our study searched a visual array for dynamic or static scenes containing humans amidst scenes containing machines and vice versa. The arrays consisted of 2, 4, 6 or 8 scenes arranged in a circular array, with targets being present or absent. Search times increased with set size for dynamic and static human and machine targets, arguing against pop out. However, search for human targets was more efficient than for machine targets as indicated by shallower search slopes for human targets. Eye tracking further revealed that observers made more first fixations to human than to machine targets and that their on-target fixation durations were shorter for human compared to machine targets. In summary, our results suggest that searching for people in natural scenes is more efficient than searching for other categories even though people do not pop out.

  18. Do People "Pop Out"?

    Directory of Open Access Journals (Sweden)

    Katja M Mayer

    Full Text Available The human body is a highly familiar and socially very important object. Does this mean that the human body has a special status with respect to visual attention? In the current paper we tested whether people in natural scenes attract attention and "pop out" or, alternatively, are at least searched for more efficiently than targets of another category (machines. Observers in our study searched a visual array for dynamic or static scenes containing humans amidst scenes containing machines and vice versa. The arrays consisted of 2, 4, 6 or 8 scenes arranged in a circular array, with targets being present or absent. Search times increased with set size for dynamic and static human and machine targets, arguing against pop out. However, search for human targets was more efficient than for machine targets as indicated by shallower search slopes for human targets. Eye tracking further revealed that observers made more first fixations to human than to machine targets and that their on-target fixation durations were shorter for human compared to machine targets. In summary, our results suggest that searching for people in natural scenes is more efficient than searching for other categories even though people do not pop out.

  19. Negative emotional outcomes attenuate sense of agency over voluntary actions.

    Science.gov (United States)

    Yoshie, Michiko; Haggard, Patrick

    2013-10-21

    Sense of agency (SoA) refers to the feeling that one's voluntary actions produce external sensory events [1, 2]. Several psychological theories hypothesized links between SoA and affective evaluation [3-6]. For example, people tend to attribute positive outcomes to their own actions, perhaps reflecting high-level narrative processes that enhance self-esteem [3]. Here we provide the first evidence that such emotional modulations also involve changes in the low-level sensorimotor basis of agency. The intentional binding paradigm [1] was used to quantify the subjective temporal compression between a voluntary action and its sensory consequences, providing an implicit measure of SoA. Emotional valence of action outcomes was manipulated by following participants' key-press actions with negative or positive emotional vocalizations [7], or neutral sounds. We found that intentional binding was reduced for negative compared to positive or neutral outcomes. Discriminant analyses identified a change in time perception of both actions and their negative outcomes, demonstrating that the experience of action itself is subject to affective modulation. A small binding benefit was also found for positive action outcomes. Emotional modulation of SoA may contribute to regulating social behavior. Correctly tracking the valenced effects of one's voluntary actions on other people could underlie successful social interactions.

  20. Concomitant pelvic irradiation and chemotherapy in locally advanced cervical carcinoma. A retrospective study of 92 patients treated at the Curie Institute; Chimioradiotherapie dans les cancers du col uterin localement evolues. Etude retrospective de 92 patientes traitees a l'Institut Curie de 1986 a 1998

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, D.; Rochefordiere, A. de la; Chauveinc, L.; Cosset, J.M. [Institut Curie, Dept. de Radiotherapie, 75 - Paris (France); Clough, K.B. [Institut Curie, Dept. de Chirurgie, 75 - Paris (France); Mouret-Fourme, E.; Guyonnet, M. [Institut Curie, Service de Biostatistiques, 75 - Paris (France)

    2002-06-01

    The prognosis of locally advanced cervix cancers is poor with metastatic and local recurrence risks. Recent publications reported that concurrent chemotherapy and pelvic radiation increased local control compared to radiotherapy alone. Chemotherapy could also decrease metastatic recurrences. We report 92 cases of patients with locally advanced cervix cancer treated between 1986 and 1998 at the Institut Curie. Patients and methods. - Concurrent chemo-radiation was exclusive in 51 cases and added to surgery in 41 cases. Chemotherapy with 5FU -Cisplatin-Mitomycin C-Vindesin (protocol A) was performed for 43% of patients and 57% of them received 5FU-Cisplatin alone (protocol B). Results. -Median follow-up was 64 months (6-149 months). Five-year disease-free survival rate was 47% and local control rate was 70%. Disease-free survival was correlated with therapeutic response. After exclusive chemo-radiation, the good responsive patients had a better DFS (54% vs 26%, p=0.018). In the surgery group, those patients with sterilized lymph nodes and tumours had also a higher DFS (76% vs 47%, p=0.036). Toxicity was higher with protocol A. Conclusion. - From our study, it appears that local control of advanced cervix cancers is better with combined chemoradiotherapy but disease-free survival stays low according to the metastatic evolution. Metastasis without local recurrence remained frequent in our study. 5FU-CDDP chemotherapy has a lower toxicity and is as effective as 5FU-CDDP-Mitomycin C-Vindesin protocol, in association with radiotherapy. (author)

  1. Overweight and obesity: helping clients to take action.

    Science.gov (United States)

    Tod, Angela Mary; Lacey, Anne

    2004-02-01

    This article presents the results of a qualitative research project to explore factors that encourage or discourage overweight people from low income groups to access weight loss services. Semi-structured interviews were conducted with 16 people attending a commercial slimming organization in South Yorkshire. The study revealed weight loss decisions to be complex and fragile. The experiences reported mirror the 'stages of change' model described by Prochaska and DiClemente (1992). Triggers to action occurred cumulatively and decisions were reached gradually. The triggers included embarrassment and humiliation, health, fear, critical events and image. Disincentives to action were denial, previous bad experiences, previous failure and money. Decisions were linked to low self-esteem and confidence, making people vulnerable at the point they take action. The implications of this for nursing practice and services in primary care are considered.

  2. The neuroscience of people watching: how the human brain makes sense of other people's encounters.

    Science.gov (United States)

    Quadflieg, Susanne; Koldewyn, Kami

    2017-05-01

    Neuroscientific investigations interested in questions of person perception and impression formation have traditionally asked their participants to observe and evaluate isolated individuals. In recent years, however, there has been a surge of studies presenting third-party encounters between two (or more) individuals as stimuli. Owing to this subtle methodological change, the brain's capacity to understand other people's interactions and relationships from limited visual information--also known as people watching--has become a distinct topic of inquiry. Though initial evidence indicates that this capacity relies on several well-known networks of the social brain (including the person-perception network, the action-observation network, and the mentalizing network), a comprehensive framework of people watching must overcome three major challenges. First, it must develop a taxonomy of judgments that people habitually make when witnessing the encounters of others. Second, it must clarify which visual cues give rise to these encounter-based judgments. Third, it must elucidate how and why several brain networks work together to accomplish these judgments. To advance all three lines of research, we summarize what is currently known as well as what remains to be studied about the neuroscience of people watching. © 2017 New York Academy of Sciences.

  3. Action Learning in China

    Science.gov (United States)

    Marquardt, Michael J.

    2015-01-01

    Action learning was introduced into China less than 20 years ago, but has rapidly become a valuable tool for organizations seeking to solve problems, develop their leaders, and become learning organizations. This article provides an historical overview of action learning in China, its cultural underpinnings, and five case studies. It concludes…

  4. An Action Environment

    DEFF Research Database (Denmark)

    van den Brand, Mark; Iversen, Jørgen; Mosses, Peter David

    2004-01-01

    constructs underlying Core ML. The paper also describes the Action Environment, a new environment supporting use and validation of ASDF descriptions. The Action Environment has been implemented on top of the ASF+SDF Meta-Environment, exploiting recent advances in techniques for integration of different...

  5. Validity in Action Research.

    Science.gov (United States)

    Watkins, Karen E.

    Emerging criteria are reported for judging the trustworthiness of action research studies as compared to the criteria established for judging the trustworthiness of other forms of naturalistic inquiry set forth by Y. S. Lincoln and E. Guba (1985). Differing conceptions of the nature of action research are delineated, and their accompanying…

  6. On action theory change

    CSIR Research Space (South Africa)

    Varzinczak, IJ

    2010-02-01

    Full Text Available revisit the semantics of action theory contraction proposed in previous work, giving more robust operators that express minimal change based on a notion of distance between Kripke-models. Second we give algorithms for syntactical action theory contraction...

  7. Action Learning and Leadership.

    Science.gov (United States)

    Marquardt, Michael J.

    2000-01-01

    Today's leaders perform the following roles: systems thinker, change agent, innovator, servant, polychronic coordinator, teacher-mentor, and visionary. The elements of action learning (real problems, teams, reflective inquiry, commitment to action, focus on learning) contribute to the development of these critical skills. (Author/SK)

  8. Critical Utopian Action Research

    DEFF Research Database (Denmark)

    Nielsen, Birger Steen; Nielsen, Kurt Aagaard

    2016-01-01

    The specific concept of critical utopian action research is presented and discussed, as to its origin, use and potentials. The inspiration from Robert Jungk and his future creating workshops is elaborated.......The specific concept of critical utopian action research is presented and discussed, as to its origin, use and potentials. The inspiration from Robert Jungk and his future creating workshops is elaborated....

  9. Action Learning in China

    Science.gov (United States)

    Marquardt, Michael J.

    2015-01-01

    Action learning was introduced into China less than 20 years ago, but has rapidly become a valuable tool for organizations seeking to solve problems, develop their leaders, and become learning organizations. This article provides an historical overview of action learning in China, its cultural underpinnings, and five case studies. It concludes…

  10. Renormalized action improvements

    Energy Technology Data Exchange (ETDEWEB)

    Zachos, C.

    1984-01-01

    Finite lattice spacing artifacts are suppressed on the renormalized actions. The renormalized action trajectories of SU(N) lattice gauge theories are considered from the standpoint of the Migdal-Kadanoff approximation. The minor renormalized trajectories which involve representations invariant under the center are discussed and quantified. 17 references.

  11. Characterization of the soil organic matter and plant tissues in an initial stage of the plant succession and soil development by means of curie-point pyrolysis coupled with GC-MS

    Science.gov (United States)

    Rahmonov, Oimahmad; Kowalski, Witold J.; Bednarek, Renata

    2010-12-01

    The composition of the soil organic matter in soil developing under the influence of vegetation during the primary succession in the poor sandy area was investigated. The Curie-point pyrolysis method coupled with gas chromatographic separation and mass spectrometric identification of pyrolysates was applied during the investigation. A comparison of occurrence and diversity in composition of organic compounds in plant tissues and humus horizon of soils under the communities of coniferous forest series in the initial stages and phases was carried out. A large diversity of organic compounds under Algae-Cyanophyta communities, biological soil crusts and Polytrichum piliferum was noticed. A clear differentiation in the composition of the soil organic matter at different phases of succession under predominating communities with cryptogamous and vascular plants was observed. The analysis of organic compounds in plant tissues was found to facilitate the determination of origin of various groups of organic compounds in the soil. The results obtained from the Curie point pyrograms in the humus horizon (A) under grasses ( Corynephorus canescens, Koeleria glauca) differed from the pyrolysates obtained under Algae-Cyanophyta communities. The polysaccharide derivates are more frequent in the pyrolysis products under algae, grasses ( Corynephorus canescens, Koeleria glauca) and mosses than under Pinus sylvestris. In the beginning of the terminal stage of succession, lignin, phenols and aliphatic substances, prevailed over the polysaccharide derivates in the humus horizon.

  12. Creativity as action

    DEFF Research Database (Denmark)

    Glaveanu, Vlad Petre; Lubart, Todd; Bonnardel, Nathalie

    2013-01-01

    The present paper outlines an action theory of creativity and substantiates this approach by investigating creative expression in five different domains. We propose an action framework for the analysis of creative acts built on the assumption that creativity is a relational, inter......-subjective phenomenon. This framework, drawing extensively from the work of Dewey (1934) on art as experience, is used to derive a coding frame for the analysis of interview material. The article reports findings from the analysis of 60 interviews with recognized French creators in five creative domains: art, design......, science, scriptwriting, and music. Results point to complex models of action and inter-action specific for each domain and also to interesting patterns of similarity and differences between domains. These findings highlight the fact that creative action takes place not “inside” individual creators but “in...

  13. Views of family carers and older people of information technology.

    Science.gov (United States)

    Andersson, Nils-Bertil; Hanson, Elizabeth; Magnusson, Lennart

    This article is the second in a series of four describing recent developments in Sweden aimed at promoting partnerships between older people, their families and formal service providers. The last article (Vol 11(11): 759-63) described the development of an information and communication technology (ICT) project ACTION -- Assisting Carers using Telematics Interventions to meet Older persons' Needs -- and focused on the use of CT to help family carers to be more prepared for their caregiving role. This article focuses on the concept of usability within the ACTION project and the importance of working closely with participants in order to create an information and communication service that is both acceptable and of direct benefit to family members in their everyday caring situations. Nielsen's (1993) Model of Usability is described within the overall context of the project and is used as a framework for the cycle of development and testing that underpin ACTION. A variety of research methods are highlighted, with a central theme being that of user involvement, with particular reference to the USERfit approach (Poulson et al, 1996). The education and training of older people and their family carers to use the ACTION technology is outlined and examples are given of the empowering effects of the use of the service and its user-driven focus. Recommendations for the further technical development of ACTION are firmly based on the comments and suggestions provided by older people and the family carers themselves.

  14. How They Got It and How They Wanted It: Marginalised Young People's Perspective on Their Experiences of Sexual Health Education

    Science.gov (United States)

    Brown, Graham; Sorenson, Anne; Hildebrand, Janina

    2012-01-01

    Young people in Australia are at greatest risk of contracting sexually transmitted infections, and priority actions are necessary for this population group. This study of marginalised and at-risk young people in out-of-school environments was conducted in Western Australia with the aim of obtaining young people's perceptions about their experience…

  15. People and Places. Teacher's Resources.

    Science.gov (United States)

    Porter, Priscilla H., Ed.

    1996-01-01

    Reviews teachers' resources related to people and places. Most of these focus on the identification of geographic locations and historical biographies of famous individuals or groups of people. Includes discussions of reference works, audio cassettes, activity kits, and fiction. (MJP)

  16. PEOPLE/POINTS

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Olympic Chief Backs China Jacques Rogge,President of the International Olympic Committee (IOC),has found the recipe for successful engagement with China."You don’t obtain anything in China with a loud voice,"Rogge told British newspaper Financial Times on April 26,and said "respectful,quiet but firm" dis- cussion was the way to get things done.According to the IOC chief,a big mistake of people in the West is that they want to impose their views on others. Rogge called on the West,which he said had only

  17. Charles Dickens' old people.

    Science.gov (United States)

    Charles, D C; Charles, L A

    Charles Dickens, rare among authors of any period, presented a host of elderly and old characters in his novels and stories. More than 120 such characters were identified, distributed among four levels of involvement (protagonist to minor role) and six categories of behavior (warm and sympathetic to villainous and threatening). The two-thirds male, one-third female characters tended to be concentrated at the minor, rather than major, levels of involvement in plots, but they represented a great range of behavior. Dickens' old people were fully engaged in life and society and were not age-stereotyped.

  18. Action spectra again?

    Science.gov (United States)

    Coohill, T P

    1991-11-01

    Action spectroscopy has a long history and is of central importance to photobiological studies. Action spectra were among the first assays to point to chlorophyll as the molecule most responsible for plant growth and to DNA as the genetic material. It is useful to construct action spectra early in the investigation of new areas of photobiological research in an attempt to determine the wavelength limits of the radiation region causing the studied response. But due to the severe absorption of ultraviolet (UV) radiation by biological samples, UV action spectra were first limited to small cells (bacteria and fungi). Advances in techniques (e.g. single cell culture) and analysis allowed accurate action spectra to be reported even for mammalian cells. But precise analytical action spectra are often difficult to obtain when large, pigmented, or groups of cells are investigated. Here some action spectra are limited in interpretation and merely supply a wavelength vs effect curve. When polychromatic sources are employed, the interpretation of action spectra is even more complex and formidable. But such polychromatic action spectra can be more directly related to ambient responses. Since precise action spectra usually require the completion of a relatively large number of careful experiments using somewhat sophisticated equipment over a range of at least six wavelengths, they are often not pursued. But they remain central to the elucidation of the effect being studied. The worldwide community has agreed that stratospheric ozone is depleting, with the possibility of a consequent rise in the amount of UV-B (290-320 nm) reaching the earth's surface. It is therefore essential that new action spectra be completed for UV-B effects on a large variety of responses of human, animal, and aquatic plant systems. Combining these action spectra with the known amounts of UV-B reaching the biosphere can give rise to solar UV effectiveness spectra that, in turn, can give rise to estimates

  19. The integration problem: Interlacing language, action and perception

    DEFF Research Database (Denmark)

    Cowley, Stephen

    2014-01-01

    Human thinking uses other peoples' experience. While often pictured as computation or based on the workings of a language-system in the mind or brain, the evidence suggests alternatives to representationalism. In terms proposed here, embodiment is interlaced with wordings as people tackle...... other things, connects action, leadership and logic. Air- force practices prompt him to draw timeously on non-local resources as, using impersonal experience, he interlaces language, action and perception. He connects the cultural and the metabolic in cognitive work as he finds a way to completion...

  20. Understanding communicative actions: a repetitive TMS study.

    Science.gov (United States)

    Stolk, Arjen; Noordzij, Matthijs L; Volman, Inge; Verhagen, Lennart; Overeem, Sebastiaan; van Elswijk, Gijs; Bloem, Bas; Hagoort, Peter; Toni, Ivan

    2014-02-01

    Despite the ambiguity inherent in human communication, people are remarkably efficient in establishing mutual understanding. Studying how people communicate in novel settings provides a window into the mechanisms supporting the human competence to rapidly generate and understand novel shared symbols, a fundamental property of human communication. Previous work indicates that the right posterior superior temporal sulcus (pSTS) is involved when people understand the intended meaning of novel communicative actions. Here, we set out to test whether normal functioning of this cerebral structure is required for understanding novel communicative actions using inhibitory low-frequency repetitive transcranial magnetic stimulation (rTMS). A factorial experimental design contrasted two tightly matched stimulation sites (right pSTS vs left MT+, i.e., a contiguous homotopic task-relevant region) and tasks (a communicative task vs a visual tracking task that used the same sequences of stimuli). Overall task performance was not affected by rTMS, whereas changes in task performance over time were disrupted according to TMS site and task combinations. Namely, rTMS over pSTS led to a diminished ability to improve action understanding on the basis of recent communicative history, while rTMS over MT+ perturbed improvement in visual tracking over trials. These findings qualify the contributions of the right pSTS to human communicative abilities, showing that this region might be necessary for incorporating previous knowledge, accumulated during interactions with a communicative partner, to constrain the inferential process that leads to action understanding. Copyright © 2013 Elsevier Ltd. All rights reserved.

  1. Creating a different international HIV response for young people.

    Science.gov (United States)

    Chandler, Caitlin L

    2011-01-01

    This paper demonstrates that certain notions of young people in the HIV and AIDS response reveal an overly generalised understanding of 'youth' that does not reflect a realistic view of young people's identity and lives. Faulty stereotypes of 'youth'--such as the perceptions that young people are necessarily victims or risk-takers--result in many HIV programmes based on generalisations about young people, rather than their actual needs and realities. These stereotypes and generalisations dominate million dollar prevention programmes that have little effect on HIV incidence rates amongst young people. To create a different future for young people and achieve real and lasting change, this paper recommends three discrete but interrelated actions for the international HIV community to undertake now; to base programmes on definitions of young people that emerge from the setting in which the programme will be implemented; to ensure HIV prevention programming is targeted at specific groups of young people, rather than a 'one-size-fits-all' package; and to incorporate structural approaches into AIDS programming to address the underlying factors that make younger age groups more vulnerable to HIV--including age-related stigma, discrimination and human rights abuses.

  2. Transgender people: health at the margins of society.

    Science.gov (United States)

    Winter, Sam; Diamond, Milton; Green, Jamison; Karasic, Dan; Reed, Terry; Whittle, Stephen; Wylie, Kevan

    2016-07-23

    In this paper we examine the social and legal conditions in which many transgender people (often called trans people) live, and the medical perspectives that frame the provision of health care for transgender people across much of the world. Modern research shows much higher numbers of transgender people than were apparent in earlier clinic-based studies, as well as biological factors associated with gender incongruence. We examine research showing that many transgender people live on the margins of society, facing stigma, discrimination, exclusion, violence, and poor health. They often experience difficulties accessing appropriate health care, whether specific to their gender needs or more general in nature. Some governments are taking steps to address human rights issues and provide better legal protection for transgender people, but this action is by no means universal. The mental illness perspective that currently frames health-care provision for transgender people across much of the world is under scrutiny. The WHO diagnostic manual may soon abandon its current classification of transgender people as mentally disordered. Debate exists as to whether there should be a diagnosis of any sort for transgender children below the age of puberty.

  3. Smart Home and Erderly People

    National Research Council Canada - National Science Library

    Andrej Strašifták; Dušan Mudrončík; Michal Eliáš

    2013-01-01

    ... benefits..The use of Smart Homes to support independent living refers here to the possibility of designing an intelligent monitoring system that can detect when an undesirable situation may be developing (e.g., hazard, security threat, etc). Although all people can be involved in such undesirable situations, elderly people and people with health p...

  4. Peopling Global Health

    Directory of Open Access Journals (Sweden)

    João Biehl

    2014-06-01

    Full Text Available The field of Global Health brings together a vastly diverse array of actors working to address pressing health issues worldwide with unprecedented financial and technological resources and informed by various agendas. While Global Health initiatives are booming and displacing earlier framings of the field (such as tropical medicine or international health, critical analyses of the social, political, and economic processes associated with this expanding field — an “open source anarchy” on the ground — are still few and far between. In this essay, we contend that, among the powerful players of Global Health, the supposed beneficiaries of interventions are generally lost from view and appear as having little to say or nothing to contribute. We make the case for a more comprehensive and people-centered approach and demonstrate the crucial role of ethnography as an empirical lantern in Global Health. By shifting the emphasis from diseases to people and environments, and from trickle-down access to equality, we have the opportunity to set a humane agenda that both realistically confronts challenges and expands our vision of the future of global communities.

  5. Shielding: people and shelter

    Energy Technology Data Exchange (ETDEWEB)

    Krissdottir, M.; Simon, J.

    1977-01-01

    Housing is something that protects and defends. This book explores the ways in which humans have sought to defend themselves against physical dangers and to protect themselves against the imagined evils of the natural world by means of the shelters built. The book examines briefly the shelters built in ancient times, and shows how several basic types recurred in different ages and at different times. Following this there is a brief survey of the kinds of shelters built by the native peoples of Canada, depending on their environment--climate, the natural materials on hand--and the culture and life-style of each people. The next chapter explores the psychology of human beings, and how shelters should satisfy not only physical needs but psychological needs as well--the need for companionship and yet for privacy, space for children to play and community centers for adults to meet. The second half of the book looks at the dilemmas of housing today, and at various attempts around the world and in Canada to solve the problems--garden cities in England, the famous community of Tapiola in Finland, the technological innovations of Disneyland, new housing suburbs in Canada. There is a discussion of the problems of urban renewal, of overcoming the high cost of home-ownership--condominiums, cooperatives, owner-built homes, and the disadvantages of trailers--and of overcoming the energy crisis by building ecological houses.

  6. CITY TRANSPORT IN BARRIER-FREE ARCHITECTURAL PLANNING SPACE FOR PEOPLE WITH LIMITED MOBILITY

    Directory of Open Access Journals (Sweden)

    Pryadko Igor’ Petrovich

    2014-09-01

    Full Text Available This paper reviews the current state of transport organization for people with limited mobility. The article evaluates the results of the actions the executive authorities of Moscow and Moscow Region take. Barrier-free space organization for disabled people and parents with prams is given a special attention. The lack of strategy in the sphere leads to considerable difficulties for people with limited ability. This problem should be solved in cooperation with the survey of other peoples' needs. The article gives examples of comfortable urban space in Sochi, Moscow, Chita, Mytishchi and analyses the ways urbanism influences people with limited abilities.

  7. Learning about causes from people and about people as causes: probabilistic models and social causal reasoning.

    Science.gov (United States)

    Buchsbaum, Daphna; Seiver, Elizabeth; Bridgers, Sophie; Gopnik, Alison

    2012-01-01

    A major challenge children face is uncovering the causal structure of the world around them. Previous research on children's causal inference has demonstrated their ability to learn about causal relationships in the physical environment using probabilistic evidence. However, children must also learn about causal relationships in the social environment, including discovering the causes of other people's behavior, and understanding the causal relationships between others' goal-directed actions and the outcomes of those actions. In this chapter, we argue that social reasoning and causal reasoning are deeply linked, both in the real world and in children's minds. Children use both types of information together and in fact reason about both physical and social causation in fundamentally similar ways. We suggest that children jointly construct and update causal theories about their social and physical environment and that this process is best captured by probabilistic models of cognition. We first present studies showing that adults are able to jointly infer causal structure and human action structure from videos of unsegmented human motion. Next, we describe how children use social information to make inferences about physical causes. We show that the pedagogical nature of a demonstrator influences children's choices of which actions to imitate from within a causal sequence and that this social information interacts with statistical causal evidence. We then discuss how children combine evidence from an informant's testimony and expressed confidence with evidence from their own causal observations to infer the efficacy of different potential causes. We also discuss how children use these same causal observations to make inferences about the knowledge state of the social informant. Finally, we suggest that psychological causation and attribution are part of the same causal system as physical causation. We present evidence that just as children use covariation between

  8. Talk and Action

    DEFF Research Database (Denmark)

    Christensen, Lars Thøger; Morsing, Mette; Thyssen, Ole

    of organizational talk and their associated activities, the paper discusses the different ways time shape the relationship between talk and action. Acknowledging that talk gives rise to different expectations over time, we put forward ideal types of organizational strategies for possible talk-action relationships....... While we illustrate our theoretical points with examples from both corporate and political contexts, we draw especially on the field of corporate social responsibility (as an extreme case) where expectations of consistency between talk and actions are most explicitly pronounced....

  9. Actions for Curved Branes

    CERN Document Server

    Abou-Zeid, M

    2000-01-01

    The nondeterminantal forms of the Born-Infeld and related brane actions in which the gauge fields couple to both an induced metric and an intrinsic metric are generalised by letting either or both metrics be dynamical. The resulting actions describe ` brane world' and cosmological scenarios in which the gauge fields are confined to the brane, while gravity propagates in both the world-volume and the bulk. In particular, for actions involving a nonsymmetric ` metric', nonsymmetric gravity propagates on the worldvolume. For 3-branes with a symmetric metric, conformal (Weyl) gravity propagates on the worldvolume and has conformally invariant couplings to the gauge fields.

  10. Violence as Situational Action

    Directory of Open Access Journals (Sweden)

    Kyle H. Treiber

    2009-05-01

    Full Text Available Violence comes in many forms and occurs in many different circumstances for many different reasons. Is it really possible to develop a single theory that can explain all these disparate acts? In this paper, we argue it is. We make the case that acts of violence are essentially moral actions and therefore can, and should, be analysed and explained as such. We maintain that all acts of violence can be explained within the general framework of a theory of moral action. We present just such a theory – Situational Action Theory – and demonstrate how it can be applied to the explanation and study of violence.

  11. Reasoning about Unreliable Actions

    CERN Document Server

    White, Graham

    2012-01-01

    We analyse the philosopher Davidson's semantics of actions, using a strongly typed logic with contexts given by sets of partial equations between the outcomes of actions. This provides a perspicuous and elegant treatment of reasoning about action, analogous to Reiter's work on artificial intelligence. We define a sequent calculus for this logic, prove cut elimination, and give a semantics based on fibrations over partial cartesian categories: we give a structure theory for such fibrations. The existence of lax comma objects is necessary for the proof of cut elimination, and we give conditions on the domain fibration of a partial cartesian category for such comma objects to exist.

  12. Action Investment Energy Games

    DEFF Research Database (Denmark)

    Larsen, Kim Guldstrand; Laursen, Simon; Srba, Jiri

    2012-01-01

    We introduce the formalism of action investment energy games where we study the trade-off between investments limited by given budgets and resource constrained (energy) behavior of the underlying system. More specifically, we consider energy games extended with costs of enabling actions and fixed...... budgets for each player. We ask the question whether for any Player 2 investment there exists a Player 1 investment such that Player 1 wins the resulting energy game. We study the action investment energy game for energy intervals with both upper and lower bounds, and with a lower bound only, and give...... a complexity results overview for the problem of deciding the winner in the game....

  13. Spacelike brane actions.

    Science.gov (United States)

    Hashimoto, Koji; Ho, Pei-Ming; Wang, John E

    2003-04-11

    We derive effective actions for "spacelike branes" (S-branes) and find a solution describing the formation of fundamental strings in the rolling tachyon background. The S-brane action is a Dirac-Born-Infeld action for Euclidean world volumes defined in the context of time-dependent tachyon condensation of non-BPS (Bogomol'nyi-Prasad-Sommerfield) branes. It includes gauge fields and, in particular, a scalar field associated with translation along the time direction. We show that the BIon spike solutions constructed in this system correspond to the production of a confined electric flux tube (a fundamental string) at late time of the rolling tachyon.

  14. Interviewing people with dementia in hospital: recommendations for researchers.

    Science.gov (United States)

    Digby, Robin; Lee, Susan; Williams, Allison

    2016-04-01

    This article aims to: Discuss the inclusion of the perspectives of people with dementia in research. Consider the major challenges involved in the process of interviewing people with dementia. Provide recommendations for those involved in interviewing people with dementia in hospital. People with dementia are frequent consumers of health care and often have a poor experience in hospital but have been largely excluded from direct participation in research until recently. Limited understanding of the specific communication needs of people with dementia restricts access to the person's viewpoint. Recommendations for interviewers which consider the specific requirements of people with dementia are presented. This is a discursive article drawing on the experience of interviewing people with dementia in three separate studies. The conclusions that will be discussed are recommendations for researchers which were formulated following examination of the reflective journals written during the data collection phases of the studies and analysis of the data from the perspective of interviewer performance. Six main issues have been identified and discussed with reference to Habermas's theory of communicative action. Interviewing people with dementia requires specific skills including an ability to be emotionally sensitive and respectful of the person. This engagement can be challenging and complex for the interviewer. It is vital that genuine engagement and mutual recognition are established before the interview is attempted. A more meaningful research outcome is likely to be the result. The suggestions outlined here are relevant to a variety of people who are in contact with people with dementia in clinical settings. Developing the skills of researchers in this area needs a commitment by organisations to promote the inclusion of the perceptions of people with dementia in research and in discussions about their own care. © 2016 John Wiley & Sons Ltd.

  15. Comparison of the impact on life quality of boosts in iodine-125 and high rate iridium-192 curie-therapy associated with a conformational radiotherapy in prostate cancers of stage II or III according to Amico; Comparaison de l'impact sur la qualite de vie des boosts par curietherapie par iode-125 et par iridium-192 de haut debit associee a une radiotherapie conformationnelle dans les cancers de la prostate de stade II ou III selon d'Amico

    Energy Technology Data Exchange (ETDEWEB)

    Guerif, S.; Chung, C.; Lavigne, B.; Boissonnade, O.; Lavigne, B.; Godon, J.B.; Bolan, G.; Fontaine, G.; Bensadoun, R.J. [Pole regional de cancerologie, Poitiers (France)

    2011-10-15

    As there is no consensus about the curie-therapy boost modality to be chosen in the case of prostate cancers of stage II or III according to Amico, and as two modalities are available (iodine-125 curie-therapy, and high dose rate curie-therapy), the authors report a comparison between these two modalities in terms of impact on life quality during the first year. They indicate the treatment procedures and discuss the results obtained in terms of urinary toxicity, an the influence of dose escalation. Life quality has also been assessed by questionnaires. Short communication

  16. Energy: actions for the public. Good european practices; Energie: actions vers le grand public. Bonnes pratiques europeennes

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-04-01

    Many actions and programs are implemented in european towns relative to the energy control and the environmental quality in urban areas. They are often different in function of political, environmental, historical or cultural factors. The knowledge and the dissemination of these european experiences appear as an asset for the french energy policy. In this framework, the actions of the people awareness are fundamental. This document presents the subject approach and the obtained results for eight experiences of european towns. (A.L.B.)

  17. Leading by Example: Creating Motivation That Fosters Positive Change in Young People

    Science.gov (United States)

    Aikens, Curtis G., Sr.

    2013-01-01

    It is not what one has in life; rather, what is left as the legacy. Personally I have received many awards. However, I feel so much better when I help people receive their own awards. Now, I want to use positive language and positive action to help motivate young people, encouraging them to achieve their own success, as well as foster success in…

  18. Young People and the Environment in Australia: Beliefs, Knowledge, Commitment and Educational Implications

    Science.gov (United States)

    Connell, Sharon; Fien, John; Sykes, Helen; Yencken, David

    2014-01-01

    There is a paucity of research in Australia on the nature of young people's attitudes, knowledge and actions. This paper reports on the findings from one such study of Australian high school students. The research was based on a survey of 5,688 students form Melbourne and Brisbane. These young people identified protection of the environment as the…

  19. Perception, Action, and Consciousness

    DEFF Research Database (Denmark)

    What is the relationship between perception and action, between an organism and its environment, in explaining consciousness? These are issues at the heart of philosophy of mind and the cognitive sciences. This book explores the relationship between perception and action from a variety of interdi......What is the relationship between perception and action, between an organism and its environment, in explaining consciousness? These are issues at the heart of philosophy of mind and the cognitive sciences. This book explores the relationship between perception and action from a variety...... of interdisciplinary perspectives, ranging from theoretical discussion of concepts to findings from recent scientific studies. It incorporates contributions from leading philosophers, psychologists, neuroscientists, and an artificial intelligence theorist. The contributions take a range of positions with respect...

  20. Call to Action

    African Journals Online (AJOL)

    in countries throughout Africa. Countries should take immediate action to decentralise postabortion care, .... used to provide care, specific activities (includ- ing management of .... a dynamic strategy for addressing unsafe abor- tions in diverse ...

  1. NSP Action Plans

    Data.gov (United States)

    Department of Housing and Urban Development — NSP Action Plans, also known as Substantial Amendments, contain a description of a grantee’s intended use for NSP funds. The plans contain information on the...

  2. Affirmative Action's Contradictory Consequences.

    Science.gov (United States)

    Heilman, Madeline E.

    1996-01-01

    Addresses affirmative action's success at creating a more equal workplace. Explores some potential psychological costs of this policy--costs that paradoxically may undermine its objectives--and their implications for achieving the goal of workplace equality. (GR)

  3. Benzidine Dyes Action Plan

    Science.gov (United States)

    This Action Plan addresses the use of benzidine-based dyes and benzidine congener-based dyes, both metalized and non-metalized, in products that would result in consumer exposure, such as for use to color textiles.

  4. Normative Action Research

    DEFF Research Database (Denmark)

    Baboroglu, Oguz; Ravn, Ib

    1992-01-01

    /organizational research, the futures perspective implies that knowledge of the social/organizational world must be based upon images of desirable futures, so-called "futures theories", not causal descriptions of a problematic present. Futures theories identify ends and means for individual and organizational development......This paper presents an argument for an enrichment of action research methodology. To the current state of action research, we add a constructivist epistemological argument, as well as a crucial inspiration from some futures-oriented planning approaches. Within the domain of social....... They are generated jointly by the stakeholders of a system and the involved action researchers and are tested every time that the prescriptions for action contained in them are followed by a system's stakeholders....

  5. Normative Action Research

    DEFF Research Database (Denmark)

    Baboroglu, Oguz; Ravn, Ib

    1992-01-01

    /organizational research, the futures perspective implies that knowledge of the social/organizational world must be based upon images of desirable futures, so-called "futures theories", not causal descriptions of a problematic present. Futures theories identify ends and means for individual and organizational development......This paper presents an argument for an enrichment of action research methodology. To the current state of action research, we add a constructivist epistemological argument, as well as a crucial inspiration from some futures-oriented planning approaches. Within the domain of social....... They are generated jointly by the stakeholders of a system and the involved action researchers and are tested every time that the prescriptions for action contained in them are followed by a system's stakeholders....

  6. Terminology versus action (Editorial

    Directory of Open Access Journals (Sweden)

    Lindsay Glynn

    2006-12-01

    Evidence Summaries are based on research in the medical information field. Our 52 Editorial Advisors and 21 Evidence Summaries writers come from many different areas including school libraries, law libraries, library schools, public libraries,a cademic libraries, research institutions, etc. Admittedly, there is some bias here since we make every attempt to ensure that we have a balanced team of Editorial Advisors and Evidence Summary writers. That aside, the evidence based movement, I’m pleased to say, appears to be reaching far beyond medical librarianship. The proverbial saying that “it’s all in the word” doesn’t hold here. You may be practicing in an evidence based manner without even realizing it. Do you make evidence informed decisions? Do you perform action based research? Have you provided a solid literature review to support a proposal?Have you presented a thorough evaluationon an implemented service? Answering yes to any of these questions does not increase the likelihood that you are a librarian in the health sciences. Rather, it demonstrates the far‐reaching evidence based activities of people in this most impressive cadre of professionals in the library and information field. This issue of Evidence Based Library andInformation Practice, like the past 3 issues, is robust with excellence. The quality of the research articles and the Evidence Summaries is extraordinary and once again, surpasses my already high expectations. We have reached a milestone: this issue marks the end of our first year as a new journal. I would like to take this opportunity to thank the Editorial Team for their remarkable contributions to the success of this journal. Working with this team during the past year has been challenging, exciting, rewarding and humbling. ToD enise Koufogiannakis and Alison Brettle, I thank you for your tireless work, endless patience and devotion to excellence. To Pam Ryan, I thank you for keeping us all on track, for managing the technology that

  7. Introducere in Action Learning

    DEFF Research Database (Denmark)

    Clausen, Søren Witzel

    In these years action learning has become an increasing aspect of qualifying in service training of teachers in Western European countries. In this article the model of action learning which has been developed by teachers at VIA University College and introduced to the teachers at the SCAN...... in service program will be described and the interaction and the learning aspects in the model will be analyzed....

  8. Institutional Logics in Action

    DEFF Research Database (Denmark)

    Lounsbury, Michael; Boxenbaum, Eva

    2013-01-01

    This double volume presents state-of-the-art research and thinking on the dynamics of actors and institutional logics. In the introduction, we briefly sketch the roots and branches of institutional logics scholarship before turning to the new buds of research on the topic of how actors engage ins...... prolific stream of research on institutional logics by deepening our insight into the active use of institutional logics in organizational action and interaction, including the institutional effects of such (inter)actions....

  9. Color Blind Affirmative Action

    OpenAIRE

    2003-01-01

    This paper presents a conceptual framework for understanding the consequences of the widespread adoption of race-neutral alternatives' to conventional racial affirmative action policies in college admissions. A simple model of applicant competition with endogenous effort is utilized to show that, in comparison to color-conscious affirmative action, these color-blind alternatives can significantly lower the efficiency of the student selection process in equilibrium. We examine data on matricul...

  10. Ergonomics and accessibility for people with visual impairment in hotels.

    Science.gov (United States)

    Dos Santos, Larissa Nascimento; de Carvalho, Ricardo José Matos

    2012-01-01

    This article presents a diagnosis of luxury or superior hotels in the city of Natal, located in the state of Rio Grande do Norte, in northeastern Brazil, in what concerns accessibility to the visually impaired. The main objective is to present the guiding principles to design actions and interventions that must be considered in the preparation or revision of technical standards and manuals of good practice in accessibility related to people with visual impairments who are hotel users. The survey showed that the hotels do not meet the normative indications of accessibility, their facilities are in-accessible (have prevented access) or of reduced accessibility and its employees are not prepared to provide adequate hospital services for people with visual impairment. It was concluded that some of the accessibility problems faced by people with visual impairments are also faced by people in general.

  11. Research with Arctic peoples

    DEFF Research Database (Denmark)

    Smith, H Sally; Bjerregaard, Peter; Chan, Hing Man

    2006-01-01

    of environmental and health issues that are unique to the Arctic regions, and research exploring these issues offers significant opportunities, as well as challenges. On July 28-29, 2004, the National Heart, Lung, and Blood Institute and the Canadian Institutes of Health Research co-sponsored a working group...... entitled "Research with Arctic Peoples: Unique Research Opportunities in Heart, Lung, Blood and Sleep Disorders". The meeting was international in scope with investigators from Greenland, Iceland and Russia, as well as Canada and the United States. Multiple health agencies from Canada and the United States...... sent representatives. Also attending were representatives from the International Union for Circumpolar Health (IUCH) and the National Indian Health Board. The working group developed a set of ten recommendations related to research opportunities in heart, lung, blood and sleep disorders; obstacles...

  12. [Addictions and action systems].

    Science.gov (United States)

    Loonis, E; Apter, M J

    2000-01-01

    Generalizing from some previous analyses of addiction, and introducing the concept of an action system which governs all actions which are focussed on what Brown (1988) calls "hedonic management", we argue that addictions of every kind involve an action system that displays high salience, low variety and low vicariance. Addictions also involve what Apter (1982) calls the "paratelic state". A study was carried out comparing 31 drug addicts with 29 control subjects in terms of action system variables. To measure these variables, we constructed a new instrument, the Activity-System Drawing Test, and also used the Telic Dominance Scale to measure frequency of paratelic states. Dysphoria was measured by means of the BATE (anxiety), IDA-13 (depression), SEI (self-esteem), and TAS-20 (alexithymia) instruments. Strongly significant differences were found between groups for both action system variables and dysphoria, and there were also strong correlations between both groups of variables. This supports the idea that addictions emerge from systemic properties of the action system.

  13. Topological Lattice Actions

    CERN Document Server

    Bietenholz, W; Pepe, M; Wiese, U -J

    2010-01-01

    We consider lattice field theories with topological actions, which are invariant against small deformations of the fields. Some of these actions have infinite barriers separating different topological sectors. Topological actions do not have the correct classical continuum limit and they cannot be treated using perturbation theory, but they still yield the correct quantum continuum limit. To show this, we present analytic studies of the 1-d O(2) and O(3) model, as well as Monte Carlo simulations of the 2-d O(3) model using topological lattice actions. Some topological actions obey and others violate a lattice Schwarz inequality between the action and the topological charge $Q$. Irrespective of this, in the 2-d O(3) model the topological susceptibility $\\chi_t = \\l/V$ is logarithmically divergent in the continuum limit. Still, at non-zero distance the correlator of the topological charge density has a finite continuum limit which is consistent with analytic predictions. Our study shows explicitly that some cla...

  14. SADC establishes a regional action plan.

    Science.gov (United States)

    Klouda, T

    1997-02-01

    The regional meeting held on AIDS strategy in Lilongwe, Malawi, in December, 1996, made important advances. The 12 countries of the SADC (Southern Africa Development Community) joined the European Union to institute a regional action plan for the reduction of susceptibility of people to HIV because of social, cultural, and environmental factors; the vulnerability of people with HIV infection to social and other difficulties; and the vulnerability of institutions because of the foregoing impacts. At the conference the issues explored were employment, mining, medical drugs, education, and tourism. An employment charter was seen as crucial for the success of AIDS and workplace activities. Facilitation of travel across borders was important for the reduction of susceptibility to HIV infection. Enhancement of regional policies for essential drugs was vital for drugs for the treatment of AIDS. The clarification of the regional role was critical for regional support of national action (strengthening technical and institutional capacities) and for regional joint action such as studies on research, harmonization of data collection on HIV/AIDS; organization of training; development of information and education on HIV/AIDS; facilitation of manufacturing of drugs and condoms; and the development of a regional information and education program about HIV/AIDS. The conference also clarified HIV/AIDS programs in relation to other health and socioeconomic problems.

  15. Perspective taking in language: integrating the spatial and action domains.

    Science.gov (United States)

    Beveridge, Madeleine E L; Pickering, Martin J

    2013-09-17

    Language is an inherently social behavior. In this paper, we bring together two research areas that typically occupy distinct sections of the literature: perspective taking in spatial language (whether people represent a scene from their own or a different spatial perspective), and perspective taking in action language (the extent to which they simulate an action as though they were performing that action). First, we note that vocabulary is used inconsistently across the spatial and action domains, and propose a more transparent vocabulary that will allow researchers to integrate action- and spatial-perspective taking. Second, we note that embodied theories of language comprehension often make the narrow assumption that understanding action descriptions involves adopting the perspective of an agent carrying out that action. We argue that comprehenders can adopt embodied action-perspectives other than that of the agent, including those of the patient or an observer. Third, we review evidence showing that perspective taking in spatial language is a flexible process. We argue that the flexibility of spatial-perspective taking provides a means for conversation partners engaged in dialogue to maximize similarity between their situation models. These situation models can then be used as the basis for action language simulations, in which language users adopt a particular action-perspective.

  16. What's an Asthma Action Plan?

    Science.gov (United States)

    ... to 2-Year-Old What's an Asthma Action Plan? KidsHealth > For Parents > What's an Asthma Action Plan? ... normal everyday activities without having asthma symptoms. Action Plans Are Unique Each person's experience with asthma is ...

  17. Political disempowerment among older people in Hong Kong.

    Science.gov (United States)

    Kam, P K

    2000-01-01

    The democratic elections that took place in Hong Kong before and after 1997 presented a unique opportunity for older people, politicians and government officials to take action to promote the participation of older people. There were, however, few significant projects undertaken to this end. This paper reports on recent research on political participation of older people in Hong Kong which found that they were active in voting but they were passive in other forms of participation. Factors affecting participation are more significantly related to politicians' mobilization than to civic education or work done by centres for the elderly. In the field, there is little awareness of using more effective strategies to address older people's political powerlessness. Strategies identified include: educational talks in local elderly centres, mock election games and meeting with candidates from different political parties. All these activities were locally based and not well articulated, and there were few concerted efforts to promote the political power and influence of older people at the central level. The present situation of older people in Hong Kong remains one of political powerlessness and the piecemeal strategies used to address the issue have so far had little impact. This paper suggests that political powerlessness is not a natural result of old age. It is a problem which is socially constructed. An analysis of the factors shaping this situation is presented. It also presents some suggested strategies for gerontological practice in promoting political empowerment among older people in Hong Kong.

  18. Body-specific motor imagery of hand actions: neural evidence from right- and left-handers

    Directory of Open Access Journals (Sweden)

    Roel M Willems

    2009-11-01

    Full Text Available If motor imagery uses neural structures involved in action execution, then the neural correlates of imagining an action should differ between individuals who tend to execute the action differently. Here we report fMRI data showing that motor imagery is influenced by the way people habitually perform motor actions with their particular bodies; that is, motor imagery is ‘body-specific’ (Casasanto, 2009. During mental imagery for complex hand actions, activation of cortical areas involved in motor planning and execution was left-lateralized in right-handers but right-lateralized in left-handers. We conclude that motor imagery involves the generation of an action plan that is grounded in the participant’s motor habits, not just an abstract representation at the level of the action’s goal. People with different patterns of motor experience form correspondingly different neurocognitive representations of imagined actions.

  19. Impact of practice and of technical modifications on acute morbidity after prostate curie-therapy; Impact de l'experience et des modifications techniques sur la morbidite aigue apres curietherapie de prostate

    Energy Technology Data Exchange (ETDEWEB)

    Le Fur, E.; Malhaire, J.P.; Pradier, O. [CHU Morvan, Brest (France); Valeri, A. [CHU Cavale-Blanche, Brest (France)

    2011-10-15

    Based on a cohort of 150 patients treated by curie-therapy for a prostate cancer, the authors report the analysis of the influence of some technical modifications (use of an automatic stepper at the beginning of a second period, and of a high frequency echographic probe during a third period) on the urinary toxicity. This toxicity has been assessed by using the urinary retention rate, and the difference between the maximum and initial International Prostate Symptom Score (IPPS). Rectal morbidity has been scaled according to a modified Radiation Therapy Oncology Group (RTOG) scale. It appears that the occurrence of urinary retention after prostate radiotherapy decreases with practice and use of the automatic stepper. It seems that there is no impact on urinary morbidity (urinary retention excluded) nor on rectal morbidity. Short communication

  20. Introducing Actions into Qualitative Simulation

    Science.gov (United States)

    1988-08-01

    include the effects of actions to form action-augmented envisionments . The action-augmented envisionment incorporates both the effects of an agent’s...procedure generation than any previous representation . This paper defines action- augmented envisionments and an algorithm for directly computing...Moving actions into the physics . The next section introduces a new representation, the action-augmented envisionment (or .fie), which inte- grates the