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Sample records for plato travels widely

  1. Plato's Embryology.

    Science.gov (United States)

    Wilberding, James

    2015-01-01

    Embryology was a subject that inspired great cross-disciplinary discussion in antiquity, and Plato's Timaeus made an important contribution to this discussion, though Plato's precise views have remained a matter of controversy, especially regarding three key questions pertaining to the generation and nature of the seed: whether there is a female seed; what the nature of seed is; and whether the seed contains a preformed human being. In this paper I argue that Plato's positions on these three issues can be adequately determined, even if some other aspects of his theory cannot. In particular, it is argued that (i) Plato subscribes to the encephalo-myelogenic theory of seed, though he places particular emphasis on the soul being the true seed; (ii) Plato is a two-seed theorist, yet the female seed appears to make no contribution to reproduction; and (iii) Plato cannot be an advocate of preformationism.

  2. Filsafat Ketuhanan Menurut Plato

    Directory of Open Access Journals (Sweden)

    Ivan Th.J Weismann

    2005-06-01

    Full Text Available Plato adalah filsuf pertama yang menulis secara filosofis dan secara sistematik teologis mengenai konsep Ketuhanan sehingga dapatlah dikatakan bahwa ia adalah peletqk dasar bagi ilmu teologia dan memberikan pengaruh besar bagi perkembanganfilsafat Barat khususnya tentangkonsep Ketuhanan. Pemikiran Plato tentang Ketuhanan adalah upayanya untuk mereformasi konsep Ketuhanan yang terdapat pada masyarakat Yunani kuno. Tulisan ini berupaya menganalisis dan memahami Ketuhanan menurut Plato agar pembaca masa kini dapat mengerti lebih dalam lagi tentong konsep Ketuhanan yang dipahami masyarakat Yunani kuno dan khususnya menurut Plato, dan juga dapat dijadikan sebagai bahan perbandingan bagifilsafat Ketuhanan pada masa kini. Filsafat Ketuhanan menurut Plato ini penulis jelaskan dengan memperhatikandimensi metafisika, epistemologi, dan etika.

  3. [Plato psychiatrist, Foucault platonic].

    Science.gov (United States)

    Mathov, Nicolás

    2016-05-01

    This work explores the links between the concepts of "soul", "law" and "word" in Plato's work, in order to highlight the importance and the centrality of the philosophical-therapeutic dimension in the Greek philosopher's thought. In that way, this work pretends to show that "contemporary" problems usually discussed within "Human Sciences" in general, and Psychiatry in particular, should confront their knowledge with Plato's work, mainly due to the profound influence his ideas have had in our Greco-Christian culture. In that sense, and with that objective, this work also explores Michel Foucault's lucid and controversial interpretation of Plato.

  4. Impact of connected vehicle guidance information on network-wide average travel time

    Directory of Open Access Journals (Sweden)

    Jiangfeng Wang

    2016-12-01

    Full Text Available With the emergence of connected vehicle technologies, the potential positive impact of connected vehicle guidance on mobility has become a research hotspot by data exchange among vehicles, infrastructure, and mobile devices. This study is focused on micro-modeling and quantitatively evaluating the impact of connected vehicle guidance on network-wide travel time by introducing various affecting factors. To evaluate the benefits of connected vehicle guidance, a simulation architecture based on one engine is proposed representing the connected vehicle–enabled virtual world, and connected vehicle route guidance scenario is established through the development of communication agent and intelligent transportation systems agents using connected vehicle application programming interface considering the communication properties, such as path loss and transmission power. The impact of connected vehicle guidance on network-wide travel time is analyzed by comparing with non-connected vehicle guidance in response to different market penetration rate, following rate, and congestion level. The simulation results explore that average network-wide travel time in connected vehicle guidance shows a significant reduction versus that in non–connected vehicle guidance. Average network-wide travel time in connected vehicle guidance have an increase of 42.23% comparing to that in non-connected vehicle guidance, and average travel time variability (represented by the coefficient of variance increases as the travel time increases. Other vital findings include that higher penetration rate and following rate generate bigger savings of average network-wide travel time. The savings of average network-wide travel time increase from 17% to 38% according to different congestion levels, and savings of average travel time in more serious congestion have a more obvious improvement for the same penetration rate or following rate.

  5. PLATO IV Accountancy Index.

    Science.gov (United States)

    Pondy, Dorothy, Comp.

    The catalog was compiled to assist instructors in planning community college and university curricula using the 48 computer-assisted accountancy lessons available on PLATO IV (Programmed Logic for Automatic Teaching Operation) for first semester accounting courses. It contains information on lesson access, lists of acceptable abbreviations for…

  6. Control Data's Education Offering: "Plato Would Have Enjoyed PLATO"

    Science.gov (United States)

    Datamation, 1976

    1976-01-01

    Programmed Learning and Teaching Operation (PLATO) distributes instructional materials in the form of text, numbers, animated drawings and other graphics for individualized, self-paced learning. (Author)

  7. From Pericles to Plato

    DEFF Research Database (Denmark)

    Larsen, Øjvind

    2012-01-01

    Plato is normally taken as one of the founders of Western political philosophy, not at least with his Republic. Here, he constructs a hierarchy of forms of governments, beginning with aristocracy at the top as a critical standard for the other forms of governments, and proceeding through timocrac......’ funeral oration is used to show that Pericles presented a democratic political philosophy that can serve as a counterpoint to Plato’s political philosophy in the Republic....

  8. Peers on Socrates and Plato

    Science.gov (United States)

    Mackenzie, Jim

    2014-01-01

    There is more to be said about two of the topics Chris Peers addresses in his article "Freud, Plato and Irigaray: A morpho-logic of teaching and learning" (2012, Educational Philosophy and Theory, 44, 760-774), namely the Socratic method of teaching and Plato's stance with regard to women and feminism. My purpose in this article is…

  9. PLATO Sitcom Dialogs for Russian.

    Science.gov (United States)

    Dawson, Clayton; Provenzano, Nolen

    1981-01-01

    Situation comedy (sitcom) dialogs that are included in PLATO lessons for first year Russian students are described. These comprehension exercises make use of both the touch panel and the audio capabilities of PLATO. The sitcom dialogs were written by a native speaker of Russian and are based on the vocabulary in the textbook plus a small number of…

  10. Peers on Socrates and Plato

    Science.gov (United States)

    Mackenzie, Jim

    2014-01-01

    There is more to be said about two of the topics Chris Peers addresses in his article "Freud, Plato and Irigaray: A morpho-logic of teaching and learning" (2012, Educational Philosophy and Theory, 44, 760-774), namely the Socratic method of teaching and Plato's stance with regard to women and feminism. My purpose in this article is…

  11. Phusis and Nomos in Plato

    Directory of Open Access Journals (Sweden)

    Zahra Nouri Sanghdehi

    2017-07-01

    Full Text Available One of the greatest problems in Plato that appears in different forms in his works is the relation of nomos and phusis. This thesis has been in fifth century B.C as the contradiction of phusis and nomos among big thinkers. In this essay, we tried to investigate the relation of phusis and nomos in Plato’s thoughts according to current theories of the contradiction of these in dialogues Gorgias, Republic and Protagoras. Plato tries to minimize consequences of belief to contradiction of phusis and nomos in social and political life by assertion large scale relation between phusis and nomos. Plato depicts the ultimate solution of this problem in Law. There he accounts nomos as raised from phusis that is sub sovereignty of divine. Indeed union of phusis and gods in Plato’s thought is sanction for the identity of phusis and nomos.

  12. What is Plato? Inference and Allusion in Plato's "Sophist."

    Science.gov (United States)

    Quandahl, Ellen

    1989-01-01

    Discusses inference and allusion in the dialogue in Plato's Sophist. Examines the sense in which a locution is used, distinguishing among senses of the verb to be, and sets the ball rolling for the development of logic and the whole metaphysics of categories of being. (RAE)

  13. The PLATO 2.0 Mission

    CERN Document Server

    Rauer, H; Aerts, C; Appourchaux, T; Benz, W; Brandeker, A; Christensen-Dalsgaard, J; Deleuil, M; Gizon, L; Güdel, M; Janot-Pacheco, E; Mas-Hesse, M; Pagano, I; Piotto, G; Pollacco, D; Santos, N C; Smith, A; -C., J; Suárez,; Szabó, R; Udry, S; Adibekyan, V; Alibert, Y; Almenara, J -M; Amaro-Seoane, P; Eiff, M Ammler-von; Antonello, E; Ball, W; Barnes, S; Baudin, F; Belkacem, K; Bergemann, M; Birch, A; Boisse, I; Bonomo, A S; Borsa, F; Brandão, I M; Brocato, E; Brun, S; Burleigh, M; Burston, R; Cabrera, J; Cassisi, S; Chaplin, W; Charpinet, S; Chiappini, C; Csizmadia, Sz; Cunha, M; Damasso, M; Davies, M B; Deeg, H J; Fialho, F de Oliveira; DÍaz, R F; Dreizler, S; Dreyer, C; Eggenberger, P; Ehrenreich, D; Eigmüller, P; Erikson, A; Farmer, R; Feltzing, S; Figueira, P; Forveille, T; Fridlund, M; García, R; Giuffrida, G; Godolt, M; da Silva, J Gomes; Goupil, M -J; Granzer, T; Grenfell, J L; Grotsch-Noels, A; Günther, E; Haswell, C A; Hatzes, A P; Hébrard, G; Hekker, S; Helled, R; Heng, K; Jenkins, J M; Khodachenko, M L; Kislyakova, K G; Kley, W; Kolb, U; Krivova, N; Kupka, F; Lammer, H; Lanza, A F; Lebreton, Y; Magrin, D; Marcos-Arenal, P; Marrese, P M; Marques, J P; Martins, J; Mathis, S; Mathur, S; Messina, S; Miglio, A; Montalban, J; Montalto, M; Monteiro, M J P F G; Moradi, H; Moravveji, E; Mordasini, C; Morel, T; Mortier, A; Nascimbeni, V; Nielsen, M B; Noack, L; Norton, A J; Ofir, A; Oshagh, M; Ouazzani, R -M; Pápics, P; Parro, V C; Petit, P; Plez, B; Poretti, E; Quirrenbach, A; Ragazzoni, R; Raimondo, G; Rainer, M; Reese, D R; Redmer, R; Reffert, S; Rojas-Ayala, B; Roxburgh, I W; Solanki, S K; Salmon, S; Santerne, A; Schneider, J; Schou, J; Schuh, S; Schunker, H; Silva-Valio, A; Silvotti, R; Skillen, I; Snellen, I; Sohl, F; Sousa, A S; Sozzetti, A; Stello, D; Strassmeier, K G; Švanda, M; Szabó, G M; Tkachenko, A; Valencia, D; van Grootel, V; Vauclair, S D; Ventura, P; Wagner, F W; Walton, N A; Weingrill, J; Werner, S C; Wheatley, P J; Zwintz, K

    2013-01-01

    PLATO 2.0 is a mission candidate for ESA's M3 launch opportunity (2022/24). It addresses fundamental questions such as: How do planetary systems form and evolve? Are there other systems with planets like ours, able to develop life? The PLATO 2.0 instrument consists of 34 small aperture telescopes providing a wide field-of-view and a large photometric magnitude range. It targets bright stars in wide fields to detect and characterize planets down to Earth-size by photometric transits, whose masses can then be determined by ground-based radial-velocity follow-up measurements. Asteroseismology will be performed for stars <=11mag to obtain highly accurate stellar parameters, including masses and ages. The combination of bright targets and asteroseismology results in high accuracy for the bulk planet parameters: 2%, 4-10% and 10% for planet radii, masses and ages, respectively. The foreseen baseline observing strategy includes two long pointings (2-3 years) to detect and bulk characterize planets reaching into t...

  14. Improvements of Travel-time Tomography Models from Joint Inversion of Multi-channel and Wide-angle Seismic Data

    Science.gov (United States)

    Begović, Slaven; Ranero, César; Sallarès, Valentí; Meléndez, Adrià; Grevemeyer, Ingo

    2016-04-01

    Commonly multichannel seismic reflection (MCS) and wide-angle seismic (WAS) data are modeled and interpreted with different approaches. Conventional travel-time tomography models using solely WAS data lack the resolution to define the model properties and, particularly, the geometry of geologic boundaries (reflectors) with the required accuracy, specially in the shallow complex upper geological layers. We plan to mitigate this issue by combining these two different data sets, specifically taking advantage of the high redundancy of multichannel seismic (MCS) data, integrated with wide-angle seismic (WAS) data into a common inversion scheme to obtain higher-resolution velocity models (Vp), decrease Vp uncertainty and improve the geometry of reflectors. To do so, we have adapted the tomo2d and tomo3d joint refraction and reflection travel time tomography codes (Korenaga et al, 2000; Meléndez et al, 2015) to deal with streamer data and MCS acquisition geometries. The scheme results in a joint travel-time tomographic inversion based on integrated travel-time information from refracted and reflected phases from WAS data and reflected identified in the MCS common depth point (CDP) or shot gathers. To illustrate the advantages of a common inversion approach we have compared the modeling results for synthetic data sets using two different travel-time inversion strategies: We have produced seismic velocity models and reflector geometries following typical refraction and reflection travel-time tomographic strategy modeling just WAS data with a typical acquisition geometry (one OBS each 10 km). Second, we performed joint inversion of two types of seismic data sets, integrating two coincident data sets consisting of MCS data collected with a 8 km-long streamer and the WAS data into a common inversion scheme. Our synthetic results of the joint inversion indicate a 5-10 times smaller ray travel-time misfit in the deeper parts of the model, compared to models obtained using just

  15. The Method of Hypothesis in Plato's Philosophy

    Directory of Open Access Journals (Sweden)

    Malihe Aboie Mehrizi

    2016-09-01

    Full Text Available The article deals with the examination of method of hypothesis in Plato's philosophy. This method, respectively, will be examined in three dialogues of Meno, Phaedon and Republic in which it is explicitly indicated. It will be shown the process of change of Plato’s attitude towards the position and usage of the method of hypothesis in his realm of philosophy. In Meno, considering the geometry, Plato attempts to introduce a method that can be used in the realm of philosophy. But, ultimately in Republic, Plato’s special attention to the method and its importance in the philosophical investigations, leads him to revise it. Here, finally Plato introduces the particular method of philosophy, i.e., the dialectic

  16. Plato's Anti-Kohlbergian Program for Moral Education

    Science.gov (United States)

    Jonas, Mark E.

    2016-01-01

    Following Lawrence Kohlberg it has been commonplace to regard Plato's moral theory as "intellectualist", where Plato supposedly believes that becoming virtuous requires nothing other than "philosophical knowledge or intuition of the ideal form of the good". This is a radical misunderstanding of Plato's educational programme,…

  17. Region-wide synchrony and traveling waves of dengue across eight countries in Southeast Asia.

    Science.gov (United States)

    van Panhuis, Willem G; Choisy, Marc; Xiong, Xin; Chok, Nian Shong; Akarasewi, Pasakorn; Iamsirithaworn, Sopon; Lam, Sai K; Chong, Chee K; Lam, Fook C; Phommasak, Bounlay; Vongphrachanh, Phengta; Bouaphanh, Khamphaphongphane; Rekol, Huy; Hien, Nguyen Tran; Thai, Pham Quang; Duong, Tran Nhu; Chuang, Jen-Hsiang; Liu, Yu-Lun; Ng, Lee-Ching; Shi, Yuan; Tayag, Enrique A; Roque, Vito G; Lee Suy, Lyndon L; Jarman, Richard G; Gibbons, Robert V; Velasco, John Mark S; Yoon, In-Kyu; Burke, Donald S; Cummings, Derek A T

    2015-10-20

    Dengue is a mosquito-transmitted virus infection that causes epidemics of febrile illness and hemorrhagic fever across the tropics and subtropics worldwide. Annual epidemics are commonly observed, but there is substantial spatiotemporal heterogeneity in intensity. A better understanding of this heterogeneity in dengue transmission could lead to improved epidemic prediction and disease control. Time series decomposition methods enable the isolation and study of temporal epidemic dynamics with a specific periodicity (e.g., annual cycles related to climatic drivers and multiannual cycles caused by dynamics in population immunity). We collected and analyzed up to 18 y of monthly dengue surveillance reports on a total of 3.5 million reported dengue cases from 273 provinces in eight countries in Southeast Asia, covering ∼ 10(7) km(2). We detected strong patterns of synchronous dengue transmission across the entire region, most markedly during a period of high incidence in 1997-1998, which was followed by a period of extremely low incidence in 2001-2002. This synchrony in dengue incidence coincided with elevated temperatures throughout the region in 1997-1998 and the strongest El Niño episode of the century. Multiannual dengue cycles (2-5 y) were highly coherent with the Oceanic Niño Index, and synchrony of these cycles increased with temperature. We also detected localized traveling waves of multiannual dengue epidemic cycles in Thailand, Laos, and the Philippines that were dependent on temperature. This study reveals forcing mechanisms that drive synchronization of dengue epidemics on a continental scale across Southeast Asia.

  18. THEORY OF LOVE IN PLATO'S PHILOSOPHY

    Directory of Open Access Journals (Sweden)

    ZOHREH MOZAFARI

    2015-01-01

    Full Text Available The article presents a philosophical analysis of the phenomenon of Plato’s love. It is noted that a large number of works are devoted to the philosophy of Plato’s love, but not all aspects of his philosophy are studied, for example the problems of erotosophy of Plato. Phenomenon of love interested philosophers since ancient times. The first attempts to explain the phenomenon of love appeared in ancient times. These attempts were made by ancient philosophers Socrates, Plato and Aristotle. Platonism is a multifaceted teaching; identification of all possibilities of Plato’s erotic philosophy which can supplement other fields of philosophy is important and topical. 

  19. Eugenics concept: from Plato to present.

    Science.gov (United States)

    Güvercin, C H; Arda, B

    2008-01-01

    All prospective studies and purposes to improve cure and create a race that would be exempt of various diseases and disabilities are generally defined as eugenic procedures. They aim to create the "perfect" and "higher" human being by eliminating the "unhealthy" prospective persons. All of the supporting actions taken in order to enable the desired properties are called positive eugenic actions; the elimination of undesired properties are defined as negative eugenics. In addition, if such applications and approaches target the public as a whole, they are defined as macro-eugenics. On the other hand, if they only aim at individuals and/or families, they are called micro-eugenics. As generally acknowledged, Galton re-introduced eugenic proposals, but their roots stretch as far back as Plato. Eugenic thoughts and developments were widely accepted in many different countries beginning with the end of the 19th to the first half of the 20th centuries. Initially, the view of negative eugenics that included compulsory sterilizations of handicapped, diseased and "lower" classes, resulted in tens of thousands being exterminated especially in the period of Nazi Germany. In the 1930s, the type of micro positive eugenics movement found a place within the pro-natalist policies of a number of countries. However, it was unsuccessful since the policy was not able to become effective enough and totally disappeared in the 1960s. It was no longer a fashionable movement and left a deep impression on public opinion after the long years of war. However, developments in genetics and its related fields have now enabled eugenic thoughts to reappear under the spotlight and this is creating new moral dilemmas from an ethical perspective.

  20. Quoting Plato in Porphyrius' Cuestiones homericas

    Directory of Open Access Journals (Sweden)

    Lucía Rodríguez‑Noriega Guillén

    2016-08-01

    Full Text Available This paper studies the quotations of Plato in Porphyry’s Homeric Questions,including their typology (literal quotation, allusion, paraphrase, etc., their beingor not direct citations, their function in the work, and their possible parallels inother authors.

  1. Plato's problem an introduction to mathematical platonism

    CERN Document Server

    Panza, M

    2013-01-01

    What is mathematics about? And how can we have access to the reality it is supposed to describe? The book tells the story of this problem, first raised by Plato, through the views of Aristotle, Proclus, Kant, Frege, Gödel, Benacerraf, up to the most recent debate on mathematical platonism.

  2. The PLATO 2.0 mission

    NARCIS (Netherlands)

    Rauer, H.; et al., [Unknown; Hekker, S.

    2014-01-01

    PLATO 2.0 has recently been selected for ESA’s M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it addresses fundamental questions such as: How do planetary systems form and evolve? Are there other systems with planets

  3. Results of the 1975 Delaware PLATO Project.

    Science.gov (United States)

    Hofstetter, Fred T.

    During the Spring semester of 1975, the University of Delaware initiated a PLATO project with the dual purpose of demonstrating how a computer system might function in a university and of evaluating what part such a system might play in the future of the university and its supporting community. The demonstration phase of the project, which…

  4. Socrates, Plato, "Eros" and Liberal Education

    Science.gov (United States)

    McPherran, Mark L.

    2010-01-01

    This paper focuses on the educational method--the "elenchos"--of Plato's Socrates, arguing, against some prominent interpretations, that it is love, both "eros" and "philia", that is the key that links Socrates' philosophy with his education. This analysis, of course, raises some difficult questions regarding the relationship between teacher and…

  5. Plato's Protagoras: Professional Models, Ethical Concerns.

    Science.gov (United States)

    Gregory, Marshall W.

    1983-01-01

    In Plato's model his clear criticism of Protagorean careerism and his negotiation with Socratic radicalism shows he is a centrist cultivating criticism and open discourse. In an age when academe seems to have lost a sense of its identify and function in society, its most enduring contributions are criticism and discourse. (MLW)

  6. Manufacturing and alignment tolerance analysis through Montecarlo approach for PLATO

    Science.gov (United States)

    Magrin, Demetrio; Ragazzoni, Roberto; Bergomi, Maria; Biondi, Federico; Chinellato, Simonetta; Dima, Marco; Farinato, Jacopo; Greggio, Davide; Gullieuszik, Marco; Marafatto, Luca; Viotto, Valentina; Munari, Matteo; Pagano, Isabella; Sicilia, Daniela; Basso, Stefano; Borsa, Francesco; Ghigo, Mauro; Spiga, Daniele; Bandy, Timothy; Brändli, Mathias; Benz, Willy; Bruno, Giordano; De Roche, Thierry; Piazza, Daniele; Rieder, Martin; Brandeker, Alexis; Klebor, Maximilian; Mogulsky, Valery; Schweitzer, Mario; Wieser, Matthias; Erikson, Anders; Rauer, Heike

    2016-07-01

    The project PLAnetary Transits and Oscillations of stars (PLATO) is one of the selected medium class (M class) missions in the framework of the ESA Cosmic Vision 2015-2025 program. The main scientific goal of PLATO is the discovery and study of extrasolar planetary systems by means of planetary transits detection. According to the current baseline, the scientific payload consists of 34 all refractive telescopes having small aperture (120mm) and wide field of view (diameter greater than 37 degrees) observing over 0.5-1 micron wavelength band. The telescopes are mounted on a common optical bench and are divided in four families of eight telescopes with an overlapping line-of-sight in order to maximize the science return. Remaining two telescopes will be dedicated to support on-board star-tracking system and will be specialized on two different photometric bands for science purposes. The performance requirement, adopted as merit function during the analysis, is specified as 90% enclosed energy contained in a square having size 2 pixels over the whole field of view with a depth of focus of +/-20 micron. Given the complexity of the system, we have followed a Montecarlo analysis approach for manufacturing and alignment tolerances. We will describe here the tolerance method and the preliminary results, speculating on the assumed risks and expected performances.

  7. What scientists can learn from Plato's Symposium

    Science.gov (United States)

    van Emmerik, Tim

    2015-04-01

    Conferences and scientific meetings are as old as science itself. The ancient Greeks where (in)famous for organizing so-called symposiums. During a symposium (from Greek, drinking together), attendees followed a program that contained both social and scientific aspects, focused around a certain topic. Whilst drinking and eating, all participants were expected to share their vision on the topic of interest by giving an oral presentation. The goal of these meetings was to arrive at a new common understanding and to come closer to the truth. Plato et al. knew very well how to organize an effective scientific conference, which should make use overthink the way we are organizing present-day conferences. Scientific meetings aim to connect researchers, share research and unravel the truth. The question is now: how do we get this done effectively? Plato knew that discussing science with strangers is difficult and he believed that talking about heavy matter could be done best when combined with social events. What if we try to go back to the times of Plato and model our conferences after the ancient symposiums? We might drop laying on couches and covering ourselves in ivy and flowers. However, a mix of social and scientific events will contribute to achieving the ultimate goal of why scientists go to conferences: to connect, to share and to unravel the truth.

  8. Travelers' Health: Cruise Ship Travel

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... cruise ships can vary widely depending on ship size, itinerary, length of cruise, and passenger demographics. Generally, ...

  9. Crustal structure beneath the Northern Mississippi Embayment from travel time inversion of vintage wide-angle seismic data

    Science.gov (United States)

    Guo, L.; Magnani, M.

    2012-12-01

    The northern Mississippi Embayment (ME) in the central US is located along the southern margin of Laurentia, a region that has been shaped by a long history of tectonic and magmatic events, including episodes of continental rifting, collision and amalgamation. In the ME these events have fundamentally altered the structure and composition of the continental lithosphere, resulting in the formation and failure of the Paleozoic Reelfoot Rift, and in the emplacement of the enigmatic mafic rift pillow at lower crustal and upper mantle depths beneath the Reelfoot Rift. Because of the spatial correlation between the present, historical and prehistorical seismicity in the New Madrid seismic zone and the mafic rift pillow, it has been proposed that this magmatic feature plays a key role in localizing strain in the Central US. Emerging evidence, however, shows that Quaternary deformation in the ME is not restricted to the New Madrid seismic zone, but encompasses a region beyond the presently seismogenic area, perhaps suggesting that the mafic rift pillow extends beyond its previously detected location. To test this hypothesis and to better constrain the lateral extent, dimension, and velocity structure of the mafic rift pillow in lower crust and upper mantle beneath the ME, we perform a travel time tomographic inversion using recent modeling codes on two vintage wide-angle seismic datasets available in the region. The data were acquired by the USGS in 1980 and 1991, and are the only seismic wide-angle crustal data constraining the geometry of the rift pillow. The 1980 USGS seismic refraction investigation consisted of a total of 34 900-1800 kg shots gathered in 9 locations and recorded by 100 portable seismographs along a series of profiles targeting the structure of the Reelfoot Rift north of Memphis, Tennessee. The 1991 USGS survey acquired a N-S 400 km-long seismic profile from Memphis, Tennessee to St. Louis, Missouri, and included 3 680-2260 kg shots recorded by ~200

  10. From Plato to Orwell: Utopian Rhetoric in a Dystopian World.

    Science.gov (United States)

    Deatherage, Scott

    Plato's "Republic" and George Orwell's "1984" both posit visionary worlds, one where humans are virtuous and understand what Plato refers to as "the Good," and the other where citizens are pawns of a government which uses language as a form of tyranny and control. Despite these overarching differences in philosophical…

  11. A Summary of Plato Curriculum and Research Materials.

    Science.gov (United States)

    Lyman, Elisabeth R.

    PLATO (programmed Logic for Automatic Teaching Operations) is a computer-based teaching system which was developed in the Coordinated Science Laboratory at the University of Illinois to explore the possibilities of automation in individual instruction. The history of the PLATO program is summarized here, along with a list of courses which used…

  12. From Plato to Orwell: Utopian Rhetoric in a Dystopian World.

    Science.gov (United States)

    Deatherage, Scott

    Plato's "Republic" and George Orwell's "1984" both posit visionary worlds, one where humans are virtuous and understand what Plato refers to as "the Good," and the other where citizens are pawns of a government which uses language as a form of tyranny and control. Despite these overarching differences in philosophical…

  13. Plato the Pederast: Rhetoric and Cultural Procreation in the Dialogues.

    Science.gov (United States)

    Ervin, Elizabeth

    1993-01-01

    Examines Plato's Dialogues by reading them through two cultural lenses: the role of eros in classical Greece and its analogous relationship to language and rhetoric; and the educational function of eros within the ancient institution of pederasty. Shows how the cultural values of ancient Greece manifested themselves in Plato's erotic educational…

  14. Plato's Philosophy of Education and the Common Core Debate

    Science.gov (United States)

    Murphy, Madonna M.

    2015-01-01

    This paper examines Plato's Philosophy of Education asking what he would say about the current Common Core initiative which is to better help students to become college and career ready. Plato would be in favor of the common core in as much as the standards are tied to specific skills needed in various career jobs as he was a proponent of…

  15. Fourth Summative Report of the Delaware PLATO Project.

    Science.gov (United States)

    Hofstetter, Fred T.

    A brief history of the Delaware PLATO project and descriptions of new developments in facilities, applications, user services, research, evaluation, and courseware produced since the Third Summative Report (1978) are provided, as well as an overview of PLATO applications at the University of Delaware. Sample lessons, illustrations, and activity…

  16. Fifth Summative Report of the Delaware PLATO Project.

    Science.gov (United States)

    Hofstetter, Fred T.

    A brief history of the Delaware PLATO project and descriptions of the new developments in facilities, applications, user services, research, evaluation, and courseware produced since the Fourth Summative Report (1979) are provided, as well as an overview of PLATO applications at the University of Delaware. Sample lessons, illustrations, and…

  17. Third Summative Report of the Delaware PLATO Project.

    Science.gov (United States)

    Hofstetter, Fred T.

    Descriptions of new developments in the areas of facilities, applications, user services, support staff, research, evaluation, and courseware production since the Second Summative Report (1977) are provided, as well as a summative overview of PLATO applications at the University of Delaware. Through the purchase of its own PLATO system, this…

  18. Plato's ghost the modernist transformation of mathematics

    CERN Document Server

    Gray, Jeremy

    2008-01-01

    Plato's Ghost is the first book to examine the development of mathematics from 1880 to 1920 as a modernist transformation similar to those in art, literature, and music. Jeremy Gray traces the growth of mathematical modernism from its roots in problem solving and theory to its interactions with physics, philosophy, theology, psychology, and ideas about real and artificial languages. He shows how mathematics was popularized, and explains how mathematical modernism not only gave expression to the work of mathematicians and the professional image they sought to create for themselves, but how modernism also introduced deeper and ultimately unanswerable questions

  19. Pemikiran Epistemologi Barat: dari Plato Sampai Gonseth

    Directory of Open Access Journals (Sweden)

    Nunu Burhanuddin

    2015-06-01

    Full Text Available This paper riviewing the Western epistemology thought. The theme focuses on Plato to Gonseth. The Epistemology that referred in this article, is to think about "how humans acquire knowledge?". From this then appear four types of sect modern western epistemology thought, namely: sect of empiricism, rationalism sect, kantinian sect, sect of positivism. Furthermore, the social positivism sciences developed by Comte leaves serious problems associated with the loss of the role of the subject. This problem being the background of epistemology philosophy appears that by Emund Husserl developed through the phenomenology, Habermas through hermeneutics, and Ferdinand Gonseth through critical theory.

  20. Plato on Metaphysical Explanation: Does 'Participating' Mean Nothing?

    Directory of Open Access Journals (Sweden)

    Christine J. Thomas

    2014-12-01

    Full Text Available According to Aristotle, Plato's efforts at metaphysical explanation not only fail, they are nonsensical. In particular, Plato's appeals to Forms as metaphysically explanatory of the sensibles that participate in them is "empty talk" since "'participating' means nothing" (Met. 992a28-9. I defend Plato against Aristotle's charge by identifying a particular, substantive model of metaphysical predication as the favored model of Plato's late ontology. The model posits two basic metaphysical predication relations: self-predication and participation. In order to understand the participation relation, it is important first to understand how Plato's Forms are self-predicative paradigms. According to the favored model, Forms are self-predicative paradigms insofar as they are ideal, abstract encoders of structural essences. Sensibles participate in Forms by exemplifying the structures encoded in the Forms. Given plausible conditions on metaphysical explanation, Plato's appeals to abstract Forms as metaphysically explanatory of sensibles is a reasonable competitor for Aristotle's appeals to natural, substantial forms. At the very least, Plato's appeals to a participation relation are not empty.

  1. Technology validation of the PLATO CCD at ESA

    Science.gov (United States)

    Prod'homme, Thibaut; Verhoeve, Peter; Beaufort, Thierry; Duvet, Ludovic; Lemmel, Frederic; Smit, Hans; Blommaert, Sander; Oosterbroek, Tim; van der Luijt, Cornelis; Visser, Ivo; Heijnen, Jerko; Butler, Bart

    2016-07-01

    PLATO { PLAnetary Transits and Oscillations of stars { is the third medium-class mission to be selected in the European Space Agency (ESA) Science and Robotic Exploration Cosmic Vision programme. Due for launch in 2025, the payload makes use of a large format (8 cm x 8 cm) Charge-Coupled Devices (CCDs) the e2v CCD270 operated at 4 MHz. The manufacture of such large device in large quantity constitutes an unprecedented effort. To de-risk the PLATO CCD procurement and aid the mission definition process, ESA's Payload Technology Validation team is characterizing the electro-optical performance of a number of PLATO devices before and after proton irradiation.

  2. A scientific approach to Plato's Atlantis

    Directory of Open Access Journals (Sweden)

    Massimo Rapisarda

    2015-09-01

    Full Text Available The myth of Atlantis is hard to die. This attempt to use scientific evidence to give it the final smash ends up with the doubt that it might not be totally unsubstantiated. The time of the supposed existence of Atlantis (around twelve thousand years ago was, in fact, characterized by technological revolutions, acknowledged by archaeology, and abrupt climate changes, documented by geology. In principle, it cannot therefore be ruled out that some of those dramatic events left a memory, later used by Plato as a basis for its tale. The climate changes involved the majority of the northern hemisphere, thus all the ancient civilizations (Egyptian, Mesopotamian, Indian and Chinese could have preserved reminiscence, but it is clear that the events occurring closer to Greece would have been more accessible to Plato. Among the Mediterranean sites that experienced the cataclysms of the beginning of the Holocene, a good candidate to host a primordial civilization might have been the archipelago then existing in the Strait of Sicily, a natural maritime link between Tunisia and Italy, prized by the presence of an obsidian source at Pantelleria. Eleven thousand five hundred years ago, a sudden sea level rise erased the archipelago, submerging the possible settlements, but Pantelleria obsidian ores are still there and could provide a significant clue. In fact, the potential discovery of artefacts, originating from a source now submerged by the sea level rise, would imply that the collection of the mineral took place when it was still emerged, namely at the time of Atlantis. Even if such discovery would not be sufficient to prove the existence of the mythical island, it would be enough to shake up the timeline of the human occupation in the region.

  3. Intra-Socratic Polemics: The Symposia of Plato and Xenophon

    Directory of Open Access Journals (Sweden)

    Gabriel Danzig

    2010-11-01

    Full Text Available Textual relationships between the two Symposia suggest that Xenophon wrote first, prompting Plato to write Socrates' critique of Phaedrus, to which Xenophon responded by appending his ch. 8.

  4. Rationality and Motivation: Moral Psychology in Plato's Socratic Dialogues

    OpenAIRE

    Ivars Neiders

    2011-01-01

    "Rationality and Motivation: Moral Psychology in Plato's Socratic Dialogues" Annotation The dissertation "Rationality and Motivation: Moral Psychology in Plato's Socratic Dialogues" is a philosophical study of Socratic views in moral psychology. Particular attention is paid to what the author calls (1) Doxastic competence and (2) Orectic competence. It is argued that according to Socrates these two different epistemic relations are important aspects of our self-understanding. The doxast...

  5. What Plato and Murdoch Think About Love

    Directory of Open Access Journals (Sweden)

    Shadi Shakouri

    2012-07-01

    Full Text Available There are many interpretations of love and lots of scholars write and talk on love; however, what exactly is the meaning of love? Iris Murdoch’s works are an accumulation of emotional relationships and feelings of love. Her great subject is love, both sexual and non-sexual, and her characters are the portrayal of a small group of people caught up in convoluted ties of love and hate, with Eros ruling over them (Cohen 22. Murdoch was one of the most respected British writers and philosophers of the second half of the twentieth century and, of course, the postwar period. In Murdoch’s novels, love is one of the central themes—marriage, as the institution of love, more often binds than frees. Her characters are mainly ego-centric people who struggle to love and are often overwhelmed by the factor of self-obsession, jealousy, ambition, fascination with suffering and charismatic power. They are absolutely ordinary people with a consuming demand for love, and mental and physical exile. Murdoch was inspired by Plato’s ideas in many ways. Like art, here again Plato’s idea of love is more skeptical than Murdoch’s, whereas Murdoch kept it only as a way to the Good, creation, and happiness. Murdoch and Plato saw love more as a Freudian concept, the Eros, the word that comes from the name of the first Greek god of love. Both the philosophers, Plato and Murdoch, believed that this erotic longing and desires revived by Eros can led to a new direction, a way toward virtue and truth. Her protagonist or marginalized characters are usually tackling it with either vulgarity or the heavenly, which results in creation, art or salvation. Murdoch, as a major moral philosopher, usually grasps the chances to encapsulate her moral visions in her works, and created novels that should be counted as meditations on human love and goodness. Keywords: Eros, erotic love and real artwork, moral philosopher, The Black Prince

  6. Reversing Plato’s Anti-Democratism: Castoriadis’ “Quirky” Plato

    OpenAIRE

    Wendy C. Hamblet

    2008-01-01

    This paper considers the conflicting "loves" of Cornelius Castoriadis--his love for the ancients, and especially Plato, and for the common person of the demos. A detailed study of Castoriadis' analysis of Plato's Statesman exposes that Castoriadis attempts to resolve the paradox by rereading Plato as a radical democrat. I argue that this unorthodox reading is at best "quirky, " (a charge Castoriadis levels at Plato) at worst a groundless sophism. However, I conjecture that Castoriadis' readin...

  7. Positure in Plato's Laws: An Introduction to Figuration on Civic Education

    Science.gov (United States)

    Hall, Joshua M.

    2016-01-01

    Purpose: The aim of the research was to determine the benefits of applying the new Figuration philosophy of dance, based in part on Plato, to civic education. Design/methodology: A close phenomenological reading of Plato's "The Laws," with a strategic focus on its account of the concept of posture. Findings: Plato considers posture to be…

  8. Plato's Cosmic Theology: A Rationale for a Polytheistic Astrology?

    Science.gov (United States)

    Henriques, André

    2015-05-01

    Plato's cosmology influenced classical astronomy and religion, but was in turn influenced by the polytheistic context of its time. Throughout his texts, including the cosmological treatise Timaeus, and the discussions on the soul in the Phaedrus, Plato (c.428-c.348 BC) established what can be generalised as Platonic cosmological thought. An understanding of the philosophical and mythical levels of Platonic thought can provide a rationale for polytheistic and astrological worldviews, pointing to some cosmological continuity, alongside major shifts, from ancient Greek religion to the astrological thought of ancient astronomers such as Claudius Ptolemy.

  9. ESA's CCD test bench for the PLATO mission

    Science.gov (United States)

    Beaufort, Thierry; Duvet, Ludovic; Bloemmaert, Sander; Lemmel, Frederic; Prod'homme, Thibaut; Verhoeve, Peter; Smit, Hans; Butler, Bart; van der Luijt, Cornelis; Heijnen, Jerko; Visser, Ivo

    2016-08-01

    PLATO { PLAnetary Transits and Oscillations of stars { is the third medium-class mission to be selected in the European Space Agency (ESA) Science and Robotic Exploration Cosmic Vision programme. Due for launch in 2025, the payload makes use of a large format (8 cm x 8 cm) Charge-Coupled Devices (CCDs), the e2v CCD270 operated at 4 MHz and at -70 C. To de-risk the PLATO CCD qualification programme initiated in 2014 and support the mission definition process, ESA's Payload Technology Validation section from the Future Missions Office has developed a dedicated test bench.

  10. A Data Bank Experience on the PLATO System.

    Science.gov (United States)

    Schwab, Wallace; St-Denis, Richard

    1980-01-01

    Current theories on terminology and lexicography which underlie the logical components of the terminology bank set up on the PLATO system and established standards are briefly presented. The units that were essential to developing the bank are discussed. References are listed. (Author)

  11. Plato and Play: Taking Education Seriously in Ancient Greece

    Science.gov (United States)

    D'Angour, Armand

    2013-01-01

    In this article, the author outlines Plato's notions of play in ancient Greek culture and shows how the philosopher's views on play can be best appreciated against the background of shifting meanings and evaluations of play in classical Greece. Play--in various forms such as word play, ritual, and music--proved central to the development of…

  12. Stonecutter Mills, Inc., Isothermal Community College. PLATO Evaluation Series.

    Science.gov (United States)

    Sherman, Greg

    Stonecutter Mills, Inc., is a textile manufacturing company with a major production facility in Spindale, North Carolina. In the past few years, Stonecutter Mills employees have been given an opportunity to spend up to 2 hours a week on company time to participate in PLATO-supported learning at Isothermal Community College. Employees could choose…

  13. Future development of the PLATO Observatory for Antarctic science

    Science.gov (United States)

    Ashley, Michael C. B.; Bonner, Colin S.; Everett, Jon R.; Lawrence, Jon S.; Luong-Van, Daniel; McDaid, Scott; McLaren, Campbell; Storey, John W. V.

    2010-07-01

    PLATO is a self-contained robotic observatory built into two 10-foot shipping containers. It has been successfully deployed at Dome A on the Antarctic plateau since January 2008, and has accumulated over 730 days of uptime at the time of writing. PLATO provides 0.5{1kW of continuous electrical power for a year from diesel engines running on Jet-A1, supplemented during the summertime with solar panels. One of the 10-foot shipping containers houses the power system and fuel, the other provides a warm environment for instruments. Two Iridium satellite modems allow 45 MB/day of data to be transferred across the internet. Future enhancements to PLATO, currently in development, include a more modular design, using lithium iron-phosphate batteries, higher power output, and a light-weight low-power version for eld deployment from a Twin Otter aircraft. Technologies used in PLATO include a CAN (Controller Area Network) bus, high-reliability PC/104 com- puters, ultracapacitors for starting the engines, and fault-tolerant redundant design.

  14. The CGE-PLATO Electronic Laboratory Station Structure and Operation.

    Science.gov (United States)

    Neal, J. P.

    An electronic laboratory station was designed for student use in learning electronic instrumentation and measurement by means of the computer-guided experimentation (CGE) system. The station features rack-mounted electronic laboratory equipment on a laboratory table adjacent to a PLATO IV terminal. An integrated logic system behind the laboratory…

  15. Pursuing the Good, Ethics and Metaphysics in Plato s Republic

    Institute of Scientific and Technical Information of China (English)

    Douglas; Cairns; Fritz-Gregor; Herrmann; Terry; Penner

    2008-01-01

    ‘Pursuing the good’ is an old subject in both social history of ancient Greece and Greek philosophy studies. There is hardly anything new when we talk about virtue or morality in the time of Plato and Aristotle. In the area of Greek history, many books and articles on or relevant to that

  16. Eschatological narrative in Plato: between logos and myth

    Directory of Open Access Journals (Sweden)

    Francesc Casadesús Bordoy

    2016-08-01

    Full Text Available In his dialogues, Plato frequently resorted to alternate and intertwine his dialectic expositions with images and allegories, aiming to illustrate his arguments. This paper analyses in detail his use of the opposition between logos and myth tointroduce his descriptions of Hades

  17. Go Tell Alcibiades: Tragedy, Comedy, and Rhetoric in Plato's "Symposium"

    Science.gov (United States)

    Crick, Nathan; Poulakos, John

    2008-01-01

    Plato's "Symposium" is a significant but neglected part of his elaborate and complex attitude toward rhetoric. Unlike the intellectual discussion of the "Gorgias" or the unscripted conversation of the "Phaedrus," the "Symposium" stages a feast celebrating and driven by the forces of "Eros." A luxuriously stylish performance rather than a rational…

  18. The Cost of PLATO in a University Environment.

    Science.gov (United States)

    Hofstetter, Fred T.

    1983-01-01

    This analysis of the cost-effectiveness of the University of Delaware's own PLATO system discusses the initial expense of acquiring the system, decreases in unit cost as number of users increased, capital investment in hardware, expenditures and funding sources, comparisons of actual and projected costs, and benefits of individualized instruction.…

  19. Second Summative Report of the Delaware PLATO Project.

    Science.gov (United States)

    Hofstetter, Fred T.

    Begun on an experimental basis in March 1975, the ongoing PLATO project at the University of Delaware has become an established part of the University's academic program. This descriptive report is divided into three sections: (1) project history and development, including organization, utilization, instructor and author training, and projections…

  20. Dodecahedrane—The chemical transliteration of Plato's universe (A Review)

    Science.gov (United States)

    Paquette, Leo A.

    1982-07-01

    The development of chemical interest in three of Plato's five convex polyhedra is described from an historical perspective. The successful synthesis of 1,16-dimethyldodecahedrane and its structural characteristics are outlined. Finally, an account of recent work leading to the still more aesthetically appealing and ultrasymmetric parent dodecahedrane is given.

  1. Arete and physics: The lesson of Plato's "Timaeus"

    Science.gov (United States)

    Wolfe, John R.

    Plato's Timaeus is traditionally read as a work dedicated to the sole purpose of describing the origin and nature of the cosmos, as a straightforward attempt by Plato to produce a peri phuseos treatise. In accord with this reading, the body of Timaeus' monologue is then seen as nothing more than an attempt by Plato to convey his own cosmological doctrines. I propose an alternative to the view that the Timaeus is nothing more than a textbook of Platonic physics. The Timaeus is rather squarely focused on the human being, in her moral and political dimensions, and on her relation to the natural world as a whole. Ultimately, this account of the human being is intended to provide part of the answer to the question of how society can produce good citizens and leaders, and thus serves to provide a theoretical basis for the practices of paideia. When viewed in this light many of the curious features of the Timaeus appear less strange. The various parts of the dialogue: the dramatic introduction, Critias' tale of the Ancient Athenians, and Timaeus' monologue can be seen as each contributing to an investigation of a single topic. It further allows us to understand why Plato chooses to employ Timaeus the Locrian as the principle speaker of the dialogue rather than Socrates. Finally, when read in this way, the Timaeus no longer appears as an outlier in the Platonic corpus, as a work devoted to a radically different subject matter than the rest of his writings. It can be seen as dedicated to the same issues which preoccupied Plato throughout his entire life, as about the determination of the best life and providing the tools with which to realize it.

  2. Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, Alex

    2015-11-01

    The Connected Traveler project is a multi-disciplinary undertaking that seeks to validate potential for transformative transportation system energy savings by incentivizing efficient traveler behavior. This poster outlines various aspects of the Connected Traveler project, including market opportunity, understanding traveler behavior and decision-making, automation and connectivity, and a projected timeline for Connected Traveler's key milestones.

  3. Teaching Early Mathematics with PLATO[R] Software: An Overview of the New PLATO Elementary Mathematics Curricula and How To Use Them. Technical Paper.

    Science.gov (United States)

    Quinn, Bill; Foshay, Rob; Morris, Barbara

    The "PLATO[R] Math Expeditions" and "PLATO[R] Projects for the Real World" curricula are designed to implement effective, research-based instructional practices. "Math Expeditions" is designed to give elementary grade users the mathematics skills and practice needed to solve real-life problems. Across the eight…

  4. THE JOURNEY OF TRUTH: FROM PLATO TO ZOLA

    Directory of Open Access Journals (Sweden)

    Ribut Basuki

    1999-01-01

    Full Text Available Western theater theory and criticism is generally considered to be set forth by the Greeks. Plato was "the first theater critic" with his negative comments about theater owing to his idealistic views about "the truth." Then came Aristotle who used a different viewpoint from that of Plato, saying that there is "truth" in theater. However, hostile criticism on theater came back in the Middle Ages, championed by Tertulian before Aristotelian theory was revived by the neo-classicists such as Scaliger and Castelvetro. Theater theory and criticism discourse was then made more alive by the romanticists who disagreed with the neo-classicists' rigid rules on theater. As the influence of science became dominant in the theater world, naturalism and realism emerged and became the mainstream of theater theory and criticism until well into the twentieth century.

  5. The necessity of dialectics according to Plato and Adorno

    DEFF Research Database (Denmark)

    Olsen, Anne-Marie Eggert

    2009-01-01

    The paper deals with the notion of philosophy as, on the one hand, an academic or scientific discipline and, on the other, something perhaps superior to the disciplines and in any case dealing with what is not a 'disciplinary' matter. Through an interpretation of Plato's concept of dialectics and...... and Adorno's understanding of philosophy as expression (Ausdruck) it is proposed that this two-fold nature of philosophy is what makes dialectics necessary....

  6. Travelers' Health: Pregnant Travelers

    Science.gov (United States)

    ... Zika is present and take precautions to avoid sexual transmission of the virus. If travel cannot be avoided, pregnant women should strictly follow steps to prevent mosquito bites. Additional information, including the most current list of countries and territories where Zika virus is a risk, ...

  7. Optical and dark characterization of the PLATO CCD at ESA

    Science.gov (United States)

    Verhoeve, Peter; Prod'homme, Thibaut; Oosterbroek, Tim; Duvet, Ludovic; Beaufort, Thierry; Blommaert, Sander; Butler, Bart; Heijnen, Jerko; Lemmel, Frederic; van der Luijt, Cornelis; Smit, Hans; Visser, Ivo

    2016-07-01

    PLATO - PLAnetary Transits and Oscillations of stars - is the third medium-class mission (M3) to be selected in the European Space Agency (ESA) Science and Robotic Exploration Cosmic Vision programme. It is due for launch in 2025 with the main objective to find and study terrestrial planets in the habitable zone around solar-like stars. The payload consists of >20 cameras; with each camera comprising 4 Charge-Coupled Devices (CCDs), a large number of flight model devices procured by ESA shall ultimately be integrated on the spacecraft. The CCD270 - specially designed and manufactured by e2v for the PLATO mission - is a large format (8 cm x 8 cm) back-illuminated device operating at 4 MHz pixel rate and coming in two variants: full frame and frame transfer. In order to de-risk the PLATO CCD procurement and aid the mission definition process, ESA's Payload Technology Validation section is currently validating the PLATO CCD270. This validation consists in demonstrating that the device achieves its specified electrooptical performance in the relevant environment: operated at 4 MHz, at cold and before and after proton irradiation. As part of this validation, CCD270 devices have been characterized in the dark as well as optically with respect to performance parameters directly relevant for the photometric application of the CCDs. Dark tests comprise the measurement of gain sensitivity to bias voltages, charge injection tests, and measurement of hot and variable pixels after irradiation. In addition, the results of measurements of Quantum Efficiency for a range of angles of incidence, intra- pixel response (non-)uniformity, and response to spot illumination, before and after proton irradiation. In particular, the effect of radiation induced degradation of the charge transfer efficiency on the measured charge in a star-like spot has been studied as a function of signal level and of position on the pixel grid, Also, the effect of various levels of background light on the

  8. [Travelers' vaccines].

    Science.gov (United States)

    Ouchi, Kazunobu

    2011-09-01

    The number of Japanese oversea travelers has gradually increased year by year, however they usually pay less attention to the poor physical condition at the voyage place. Many oversea travelers caught vaccine preventable diseases in developing countries. The Vaccine Guideline for Oversea Travelers 2010 published by Japanese Society of Travel Health will be helpful for spreading the knowledge of travelers' vaccine and vaccine preventable diseases in developing countries. Many travelers' vaccines have not licensed in Japan. I hope these travelers' vaccines, such as typhoid vaccine, meningococcal vaccine, cholera vaccine and so on will be licensed in the near future.

  9. Alternative communication network designs for an operational Plato 4 CAI system

    Science.gov (United States)

    Mobley, R. E., Jr.; Eastwood, L. F., Jr.

    1975-01-01

    The cost of alternative communications networks for the dissemination of PLATO IV computer-aided instruction (CAI) was studied. Four communication techniques are compared: leased telephone lines, satellite communication, UHF TV, and low-power microwave radio. For each network design, costs per student contact hour are computed. These costs are derived as functions of student population density, a parameter which can be calculated from census data for one potential market for CAI, the public primary and secondary schools. Calculating costs in this way allows one to determine which of the four communications alternatives can serve this market least expensively for any given area in the U.S. The analysis indicates that radio distribution techniques are cost optimum over a wide range of conditions.

  10. Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    2016-06-01

    The Connected Traveler framework seeks to boost the energy efficiency of personal travel and the overall transportation system by maximizing the accuracy of predicted traveler behavior in response to real-time feedback and incentives. It is anticipated that this approach will establish a feedback loop that 'learns' traveler preferences and customizes incentives to meet or exceed energy efficiency targets by empowering individual travelers with information needed to make energy-efficient choices and reducing the complexity required to validate transportation system energy savings. This handout provides an overview of NREL's Connected Traveler project, including graphics, milestones, and contact information.

  11. The Philosopher's Arete or theStructure of Plato's Parmenides

    Directory of Open Access Journals (Sweden)

    Raúl Gutierrez

    1998-12-01

    Full Text Available The controversy conceming the unity of Plato's Parmenides and the meaning of its first part is stillongoing. The A. proposes a solution, pointing out its structural coincidence with the Republic's simile of the line. This leads him to confine young Socrates in the segment that corresponds to óuivoux and old Parmenides in the vór¡olc; segment. As the one who "possesses insight" of truth based on his apprehension of the One-Good. Parmenides is the actual representative of the philosopher's arete.

  12. Tibial plato leveling osteotomy / Osteotomia de nivelamento do plato da tíbia

    Directory of Open Access Journals (Sweden)

    Julia Maria Matera

    2008-08-01

    Full Text Available The tibial plateau leveling osteotomy (TPLO is a relatively new and innovative surgical treatment for the cranial cruciate ligament rupture in the canine species. The real intent of the procedure is to provide functional stability to the stifle joint by eliminating or neutralizing the cranial tibial thrust during weight bearing instead to restore the cranial cruciate ligament function. The proposal of this study is to report a review of the TPLO procedure, emphasizing procedure, surgical technique, post operative care and complications. The TPLO procedure consists in a radial osteotomy in the tibial plato and rotation of the caudal plateau in order to obtain a desired angle. After the leveling of the tibial plateau, a bone plate and screws are used to stabilize the osteotomy until bone is healed up. The complications that have been associated with the procedure include tibial tuberosity fracture and patellar tendon tendinosis. This procedure has become increasingly more popular for surgical treatment of cranial cruciate ligament injuries in large breed dog. The long term clinical results have not been completely elucidated yet. It has been showed that this technique doesn’t halt the degenerative joint disease.A osteotomia do platô da tíbia (TPLO é um tratamento relativamente novo e inovador para a ruptura do ligamento cruzado cranial (RLCC na espécie canina. Ao invés de restaurar a função do ligamento, o procedimento promove estabilidade funcional para a articulação do joelho, por eliminar ou neutralizar a força tibial cranial durante a sustentação de peso. A proposta do presente estudo é revisar a técnica de TPLO, enfatizando o procedimento, técnica cirúrgica, cuidados pós-operatórios e complicações. A técnica da TPLO consiste na realização de uma osteotomia circular do platô da tíbia com rotação de sua porção caudal até a obtenção do ângulo desejado. Após o nivelamento do platô da tíbia, placa e parafusos

  13. Reversing Plato’s Anti-Democratism: Castoriadis’ “Quirky” Plato

    Directory of Open Access Journals (Sweden)

    Hamblet, Wendy C.

    2008-12-01

    Full Text Available This paper considers the conflicting "loves" of Cornelius Castoriadis--his love for the ancients, and especially Plato, and for the common person of the demos. A detailed study of Castoriadis' analysis of Plato's Statesman exposes that Castoriadis attempts to resolve the paradox by rereading Plato as a radical democrat. I argue that this unorthodox reading is at best "quirky, " (a charge Castoriadis levels at Plato at worst a groundless sophism. However, I conjecture that Castoriadis' reading may not constitute a serious attempt to describe a Platonic politics, so much as a prescriptive reading of what otherwise might have been, given certain strands of political generosity evident elsewhere in Plato's corpus.

  14. Radiation, Thermal Gradient and Weight: a threefold dilemma for PLATO

    Science.gov (United States)

    Magrin, Demetrio; Ragazzoni, Roberto; Bruno, Giordano; Piazza, Daniele; Borsa, Francesco; Ghigo, Mauro; Mogulsky, Valery; Bergomi, Maria; Biondi, Federico; Chinellato, Simonetta; Dima, Marco; Farinato, Jacopo; Greggio, Davide; Gullieuszik, Marco; Marafatto, Luca; Viotto, Valentina; Munari, Matteo; Pagano, Isabella; Sicilia, Daniela; Basso, Stefano; Spiga, Daniele; Bandy, Timothy; Brändli, Mathias; Benz, Willy; De Roche, Thierry; Rieder, Martin; Brandeker, Alexis; Klebor, Maximilian; Schweitzer, Mario; Wieser, Matthias; Erikson, Anders; Rauer, Heike

    2016-07-01

    The project PLAnetary Transits and Oscillations of stars (PLATO) is one of the selected medium class (M class) missions in the framework of the ESA Cosmic Vision 2015-2025 program. The mean scientific goal of PLATO is the discovery and study of extrasolar planetary systems by means of planetary transits detection. The opto mechanical subsystem of the payload is made of 32 normal telescope optical units (N-TOUs) and 2 fast telescope optical units (FTOUs). The optical configuration of each TOU is an all refractive design based on six properly optimized lenses. In the current baseline, in front of each TOU a Suprasil window is foreseen. The main purposes of the entrance window are to shield the following lenses from possible damaging high energy radiation and to mitigate the thermal gradient that the first optical element will experience during the launch from ground to space environment. In contrast, the presence of the window increases the overall mass by a non-negligible quantity. We describe here the radiation and thermal analysis and their impact on the quality and risks assessment, summarizing the trade-off process with pro and cons on having or dropping the entrance window in the optical train.

  15. Love as an Object of Initiation in Plato's Philosophy

    Directory of Open Access Journals (Sweden)

    Euaggelia Maraggianou

    2007-07-01

    Full Text Available Initiation ( muvhsh was the first stage of the ancient mysteries celebrating Demeter, the earth-goddess, and her daughter Kore, soon identified with Persephone or Persephasa, a pre-Greek deity of the underworld. Next came the stage of contemplation ( ejpopteiva , at which worshippers were shown a vision of the goddess of Hades. This led them to identify themselves with her, thus reaching the highest form of happiness. The Eleusinian Mysteries were inseparably linked to the Orphic doctrine, which in its turn influenced the thought of Plato. Plato sees love as an object of initiation and as one of the greatest mysteries of human existence. Plato’s dialogues, Phaedrus and Symposium, contain expressions borrowed directly from the vocabulary of the Mysteries. Although neither Socrates in Phaedrus nor Diotima in Symposium make any explicit reference to the mystic ceremonies, it is certain that both allude to them in expounding the mysteries of spiritual life. The latter has to start at the stage of physical love in order to end up in the contemplation of Ideas. The mystery into which Socrates is initiated by Diotima is the following: there is a mystic stairway leading from the earth to the sky, from man to God. It is made visible by Love, and its steps are represented by different kinds of beauty. The ascent is a gradual one, with a long stop at each of the stages. In this way Love, disciplined by philosophy and spiritualised by increasing de-personalisation, ends up in the Intellectual, conceiving the latter with an intuitive insight. By this spiritual process, one is purified, led to the road of salvation and enabled to participate in the Divine.

  16. PLATO as it is : A legacy mission for Galactic archaeology

    Science.gov (United States)

    Miglio, A.; Chiappini, C.; Mosser, B.; Davies, G. R.; Freeman, K.; Girardi, L.; Jofré, P.; Kawata, D.; Rendle, B. M.; Valentini, M.; Casagrande, L.; Chaplin, W. J.; Gilmore, G.; Hawkins, K.; Holl, B.; Appourchaux, T.; Belkacem, K.; Bossini, D.; Brogaard, K.; Goupil, M.-J.; Montalbán, J.; Noels, A.; Anders, F.; Rodrigues, T.; Piotto, G.; Pollacco, D.; Rauer, H.; Prieto, C. Allende; Avelino, P. P.; Babusiaux, C.; Barban, C.; Barbuy, B.; Basu, S.; Baudin, F.; Benomar, O.; Bienaymé, O.; Binney, J.; Bland-Hawthorn, J.; Bressan, A.; Cacciari, C.; Campante, T. L.; Cassisi, S.; Christensen-Dalsgaard, J.; Combes, F.; Creevey, O.; Cunha, M. S.; Jong, R. S.; Laverny, P.; Degl'Innocenti, S.; Deheuvels, S.; Depagne, É.; Ridder, J.; Matteo, P. Di; Mauro, M. P. Di; Dupret, M.-A.; Eggenberger, P.; Elsworth, Y.; Famaey, B.; Feltzing, S.; García, R. A.; Gerhard, O.; Gibson, B. K.; Gizon, L.; Haywood, M.; Handberg, R.; Heiter, U.; Hekker, S.; Huber, D.; Ibata, R.; Katz, D.; Kawaler, S. D.; Kjeldsen, H.; Kurtz, D. W.; Lagarde, N.; Lebreton, Y.; Lund, M. N.; Majewski, S. R.; Marigo, P.; Martig, M.; Mathur, S.; Minchev, I.; Morel, T.; Ortolani, S.; Pinsonneault, M. H.; Plez, B.; Moroni, P. G. Prada; Pricopi, D.; Recio-Blanco, A.; Reylé, C.; Robin, A.; Roxburgh, I. W.; Salaris, M.; Santiago, B. X.; Schiavon, R.; Serenelli, A.; Sharma, S.; Aguirre, V. Silva; Soubiran, C.; Steinmetz, M.; Stello, D.; Strassmeier, K. G.; Ventura, P.; Ventura, R.; Walton, N. A.; Worley, C. C.

    2017-07-01

    Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys will soon provide us with a well-defined view of the current chemo-kinematical structure of the Milky Way, but will only enable a blurred view on the temporal sequence that led to the present-day Galaxy. As demonstrated by the (ongoing) exploitation of data from the pioneering photometric missions CoRoT, Kepler, and K2, asteroseismology provides the way forward: solar-like oscillating giants are excellent evolutionary clocks thanks to the availability of seismic constraints on their mass and to the tight age-initial-mass relation they adhere to. In this paper we identify five key outstanding questions relating to the formation and evolution of the Milky Way that will need precise and accurate ages for large samples of stars to be addressed, and we identify the requirements in terms of number of targets and the precision on the stellar properties that are needed to tackle such questions. By quantifying the asteroseismic yields expected from PLATO for red-giant stars, we demonstrate that these requirements are within the capabilities of the current instrument design, provided that observations are sufficiently long to identify the evolutionary state and allow robust and precise determination of acoustic-mode frequencies. This will allow us to harvest data of sufficient quality to reach a 10% precision in age. This is a fundamental pre-requisite to then reach the more ambitious goal of a similar level of accuracy, which will only be possible if we have to hand a careful appraisal of systematic uncertainties on age deriving from our limited understanding of stellar physics, a goal which conveniently falls within the main aims of PLATO's core science.

  17. Travelling diabetics.

    Science.gov (United States)

    Chełmińska, Katarzyna; Jaremin, Bogdan

    2002-01-01

    During the past several decades, the number of both business and tourist travels has greatly increased. Among them are persons suffering from chronic diseases, including diabetics for whom travels pose the additional health-hazard. Irrespective of better education, self-control and constantly improving quality of specialistic equipment available, diabetics still are the group of patients requiring particular attention. In the case of travelling diabetics, problems may occur concerning the transport and storage of insulin, as well as control of glycaemia, all caused by irregularity of meals, variable diet, physical activity, stress, kinetosis (sea voyages), and the change of time zones. The travel may as well evoke ailments caused by the change of climate and concomitant diseases such as traveller's diarrhoea, malaria, etc. Apart from avoiding glycaemia fluctuations, important for retaining health of diabetics is the prevention of other diseases and carrying the necessary drugs.

  18. Angiographic outcomes in the PLATO Trial (Platelet Inhibition and Patient Outcomes)

    National Research Council Canada - National Science Library

    Kunadian, Vijay; James, Stefan K; Wojdyla, Daniel M; Zorkun, Cafer; Wu, Jinhui; Storey, Robert F; Steg, Ph Gabriel; Katus, Hugo; Emanuelsson, Hakan; Horrow, Jay; Maya, Juan; Wallentin, Lars; Harrington, Robert A; Gibson, C Michael

    2013-01-01

    The PLATO (Platelet Inhibition and Patient Outcomes) angiographic substudy sought to compare the efficacy of ticagrelor versus clopidogrel with respect to angiographic outcomes before and after PCI in the setting of acute coronary syndrome...

  19. The Legacies of Literacy: From Plato to Freire through Harvey Graff.

    Science.gov (United States)

    Gee, James Paul

    1989-01-01

    Reviews "The Legacies of Literacy: Continuities and Contradictions in Western Culture and Society" (Harvey G. Graff). Discusses the historical role of literacy education as a tool for liberation, emphasizing the viewpoints of Plato and Freire. (FMW)

  20. Genesis 2–3 and Alcibiades's speech in Plato's Symposium : A ...

    African Journals Online (AJOL)

    Genesis 2–3 and Alcibiades's speech in Plato's Symposium : A cultural critical reading. ... interpretation can arise from the analysis of Alcibiades's speech compared to M- and LXX-Genesis ... EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT

  1. Prospects for detecting decreasing exoplanet frequency with main sequence age using PLATO

    CERN Document Server

    Veras, Dimitri; Mustill, Alexander J; Pollacco, Don

    2015-01-01

    The space mission PLATO will usher in a new era of exoplanetary science by expanding our current inventory of transiting systems and constraining host star ages, which are currently highly uncertain. This capability might allow PLATO to detect changes in planetary system architecture with time, particularly because planetary scattering due to Lagrange instability may be triggered long after the system was formed. Here, we utilize previously published instability timescale prescriptions to determine PLATO's capability to detect a trend of decreasing planet frequency with age for systems with equal-mass planets. For two-planet systems, our results demonstrate that PLATO may detect a trend for planet masses which are at least as massive as super-Earths. For systems with three or more planets, we link their initial compactness to potentially detectable frequency trends in order to aid future investigations when these populations will be better characterized.

  2. Plato's Charmides as a Political Act: Apologetics and the Promotion of Ideology

    National Research Council Canada - National Science Library

    Danzig, Gabriel

    2013-01-01

      By showing that Critias and Socrates understood the same matters differently, Plato was able to treat seriously ideas that came to be associated with the Thirty and with Socrates while shielding himself from criticism...

  3. Platerm: la banque de terminologie du systeme Platon (PLATERM: The Terminology Bank of the PLATO System).

    Science.gov (United States)

    Schwab, Wallace; St-Denis, Richard

    1980-01-01

    Describes the elements and functioning of the terminology bank of the PLATO (Programmed Loqic for Automated Teaching Operation) system. Discusses contemporary terminology and lexicography notions on which the bank is based and outlines the tasks performed through PLATERM. (MES)

  4. Platerm: la banque de terminologie du systeme Platon (PLATERM: The Terminology Bank of the PLATO System).

    Science.gov (United States)

    Schwab, Wallace; St-Denis, Richard

    1980-01-01

    Describes the elements and functioning of the terminology bank of the PLATO (Programmed Loqic for Automated Teaching Operation) system. Discusses contemporary terminology and lexicography notions on which the bank is based and outlines the tasks performed through PLATERM. (MES)

  5. Travelers' Health: Travel and Breastfeeding

    Science.gov (United States)

    ... I J K L M N O P Q R S T U V W X Y Z # ... search/groups ). Mothers who plan to use a breast pump while traveling may need an electrical current ... during travel because exclusive breastfeeding means feeding only breast milk, no other foods or drinks, which protects ...

  6. [Travel medicine].

    Science.gov (United States)

    Schubert, S; Grimm, M

    2009-07-01

    Travel medicine deals with travellers' diseases. The target group is therefore distinct from tropical medicine. It has gained in significance due to the increase in tourism and professional work abroad in the last 50 years. Dangerous and widespread diseases in tropical countries, in particular tropical malaria, have come into focus in industrialized countries because of their appearance in travellers. Travel medicine deals not only with infectious or transmittable diseases, but also with the ability of patients with chronic diseases to travel, the medical aspects of flying, as well as the health hazards of professional work or high-risk sports abroad. The risk of disease as a result of travelling can be minimized by advice and prophylactic measures, such as vaccinations and drug prophylaxis against malaria, if indicated. On return, medical symptoms should be investigated promptly to ensure early detection of life-threatening disease courses, particularly tropical malaria, as well as to prevent the occurrence of small-scale epidemics. A small number of diseases can also emerge after several years, such as benign types of malaria, amoebic liver abscess and visceral leishmaniasis (kala-azar). Aids also belongs to these diseases. Therefore, in this era of HIV pandemic travellers concerned should be made aware of the risks.

  7. TRAVEL INFORMATION

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Mauritius Travel From August 31 to September 6, a high- level government delegation from Mauritius visited China. The delegation was headed by the President of Mauritius, Sir Anerood Jugnauth, and included the Minister of Tourism,

  8. Travelling Concepts

    DEFF Research Database (Denmark)

    Simonsen, Karen-Margrethe

    2013-01-01

    Review of "Travelling Concepts, Metaphors, and Narratives: Literary and Cultural Studies in an Age of Interdisciplinary Research" ed. by Sibylle Baumgarten, Beatrice Michaelis and Ansagar Nünning, Trier; Wissenschaftlicher Verlag Trier, 2012......Review of "Travelling Concepts, Metaphors, and Narratives: Literary and Cultural Studies in an Age of Interdisciplinary Research" ed. by Sibylle Baumgarten, Beatrice Michaelis and Ansagar Nünning, Trier; Wissenschaftlicher Verlag Trier, 2012...

  9. [Traveller's diarrhoea].

    Science.gov (United States)

    Vila, Jordi; Oliveira, Ines; Zboromyrska, Yuliya; Gascon, Joaquim

    2016-11-01

    Traveller's diarrhoea (TD) is acquired primarily through ingestion of food and drinks contaminated with pathogens that cause diarrhoea. They can be bacteria, protozoa, helminths, and viruses. Globally, the most common causes of TD are two pathotypes of Escherichia coli (enterotoxigenic and enteroaggregative) and Campylobacter, although there are significant variations by geographic area visited. Most TD occurs in individuals traveling to low-middle income countries. The type of travel, length of stay, traveller's age, and the presence of certain underlying conditions are important risk factors to consider for the acquisition of TD. While TD is usually a mild and self-limiting disease, half of travellers with TD experience some limitation of activities during their trip, while up to 10% will experience persistent diarrhoea or other complications. The purpose of this article is to provide an updated microbiological, epidemiological, and clinical profile of traveller's diarrhoea, including known risk factors, as well as to make recommendations on the prevention and treatment of TD. Copyright © 2016 Elsevier España, S.L.U. and Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica. All rights reserved.

  10. Travelers' Health: Cruise Ship Travel

    Science.gov (United States)

    ... vectorborne diseases such as malaria, dengue, yellow fever, Japanese encephalitis, and Zika are endemic. New diseases might ... environmental conditions, as well as unaccustomed changes in diet and physical activity. Foreign travel may increase the ...

  11. The PLATO Dome A site-testing observatory: Power generation and control systems

    Science.gov (United States)

    Lawrence, J. S.; Ashley, M. C. B.; Hengst, S.; Luong-van, D. M.; Storey, J. W. V.; Yang, H.; Zhou, X.; Zhu, Z.

    2009-06-01

    The atmospheric conditions above Dome A, a currently unmanned location at the highest point on the Antarctic plateau, are uniquely suited to astronomy. For certain types of astronomy Dome A is likely to be the best location on the planet, and this has motivated the development of the Plateau Observatory (PLATO). PLATO was deployed to Dome A in early 2008. It houses a suite of purpose-built site-testing instruments designed to quantify the benefits of Dome A site for astronomy, and science instruments designed to take advantage of the observing conditions. The PLATO power generation and control system is designed to provide continuous power and heat, and a high-reliability command and communications platform for these instruments. PLATO has run and collected data throughout the winter 2008 season completely unattended. Here we present a detailed description of the power generation, power control, thermal management, instrument interface, and communications systems for PLATO, and an overview of the system performance for 2008.

  12. Gaia and WEAVE/WxES: Supporting the PLATO Exoplanet Hunter

    Science.gov (United States)

    Walton, N. A.

    2016-10-01

    This paper briefly describes the powerful linkages between the Gaia and PLATO missions and the potential for WEAVE in the study of exoplanet populations, for instance through the proposed WxES survey. Gaia successfully launched in December 2013, and over the course of its nominal five year mission will discover, via their astrometric signatures, upwards of 20 000 massive Jupiter sized long period planets at distances out to several hundred parsecs around all star types. In addition Gaia will discover up to a thousand short period hot Jupiters around M stars. PLATO, to launch in 2024, will through precision photometry, observe in detail some million host stars, and will detect, via the transit technique, planets down to Earth masses. PLATO will observe two fields of over 2 000 square degrees for 2-3 years each. At least one of these will be in the northern hemisphere. WEAVE has the potential to provide detailed chemical characterization of the host stars of the Gaia and PLATO exoplanet systems. This will enable insights into, for instance, metallicity of the host star correlations against both massive exoplanets (perhaps confirming current relationships), and lower mass exoplanets. We note how the rapid exploitation of such a potential WEAVE survey could be achieved, utilizing the WEAVE processing systems being developed at the IoA, Cambridge, coupled with efficient interfaces to both Gaia and PLATO data products, that are also being generated at the IoA.

  13. Travel Fever

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    China to become the world’s No.1 tourist destination by 2015 May 19 is a special day in China’s history. On that day 400 years ago,Xu Xiake (1587-1641),wellknown geographer,traveler and explorer of the Ming Dynasty (1368-1644),started a lifelong journey,leading to the publication of the monumental Xu Xiake’s Travel Notes,known for its detailed and accurate geographical information. The book also provided valuable insight into local customs and habits.

  14. Colored Traveling Salesman Problem.

    Science.gov (United States)

    Li, Jun; Zhou, MengChu; Sun, Qirui; Dai, Xianzhong; Yu, Xiaolong

    2015-11-01

    The multiple traveling salesman problem (MTSP) is an important combinatorial optimization problem. It has been widely and successfully applied to the practical cases in which multiple traveling individuals (salesmen) share the common workspace (city set). However, it cannot represent some application problems where multiple traveling individuals not only have their own exclusive tasks but also share a group of tasks with each other. This work proposes a new MTSP called colored traveling salesman problem (CTSP) for handling such cases. Two types of city groups are defined, i.e., each group of exclusive cities of a single color for a salesman to visit and a group of shared cities of multiple colors allowing all salesmen to visit. Evidences show that CTSP is NP-hard and a multidepot MTSP and multiple single traveling salesman problems are its special cases. We present a genetic algorithm (GA) with dual-chromosome coding for CTSP and analyze the corresponding solution space. Then, GA is improved by incorporating greedy, hill-climbing (HC), and simulated annealing (SA) operations to achieve better performance. By experiments, the limitation of the exact solution method is revealed and the performance of the presented GAs is compared. The results suggest that SAGA can achieve the best quality of solutions and HCGA should be the choice making good tradeoff between the solution quality and computing time.

  15. Time travel?

    CERN Document Server

    Deser, Stanley D; Deser, Stanley; Jackiw, Roman

    1992-01-01

    To travel into the past, to observe it, perhaps to influence it and correct mistakes of one's youth, has been an abiding fantasy of mankind for as long as we have been aware of a past. Here are described some recent scientific investigations on this topic.

  16. Traveler's Diarrhea

    Science.gov (United States)

    ... probably safe to eat or drink the following:Soft drinks that are carbonated (such as cola).Hot drinks, ... for Staying HealthyInternational travel has its share of health and safety challenges. Talk to your doctor about the area ...

  17. The role of the poet in Plato's ideal cities of Callipolis and Magnesia

    Directory of Open Access Journals (Sweden)

    Gerard Naddaf

    2008-01-01

    Full Text Available Plato's attitude toward the poets and poetry has always been a flashpoint of debate, controversy and notoriety, but most scholars have failed to see their central role in the ideal cities of the Republic and the Laws, that is, Callipolis and Magnesia. In this paper, I argue that in neither dialogue does Plato "exile" the poets, but, instead, believes they must, like all citizens, exercise the expertise proper to their profession, allowing them the right to become full-fledged participants in the productive class. Moreover, attention to certain details reveals that Plato harnesses both positive and negative factors in poetry to bring his ideal cities closer to a practical realization. The status of the poet and his craft in this context has rarely to my knowledge been addressed.

  18. PLATO - the next-generation AASTINO for robotic site-testing on the Antarctic plateau

    Science.gov (United States)

    Hengst, S.; Lawrence, J.; Luong-van, D.; Everett, J.; Ashley, M. C. B.; Storey, J. W. V.; Hall, S.

    2006-08-01

    A new site-testing facility, PLATO (Plateau Observatory), is under development at UNSW for deployment to remote sites on the Antarctic Plateau including Dome A. The new facility will adopt many of the features of the AASTINO (Automated Astrophysical Site Testing InterNational Observatory) facility at Dome C. PLATO will autonomously control a flexible site testing and observing instrument suite, monitored via the Iridium satellite network. A challenging aspect of PLATO is to maximise the reliability of the power source while minimising fuel consumption. We are building a low pressure, low temperature environmental chamber to simulate operation at the highest altitudes (4,100 m at Dome A). Two types of engines will be tested: a single-cylinder diesel engine and a Stirling engine.

  19. Efficient methods for solving discrete topology design problems in the PLATO-N project

    DEFF Research Database (Denmark)

    Canh, Nam Nguyen; Stolpe, Mathias

    This paper considers the general multiple load structural topology design problems in the framework of the PLATO-N project. The problems involve a large number of discrete design variables and were modeled as a non-convex mixed 0–1 program. For the class of problems considered, a global optimizat......This paper considers the general multiple load structural topology design problems in the framework of the PLATO-N project. The problems involve a large number of discrete design variables and were modeled as a non-convex mixed 0–1 program. For the class of problems considered, a global...

  20. The quest for a poetics of goodness in plato and aristotle

    OpenAIRE

    Dairo Orozco

    2012-01-01

    The paper, which compares Plato and Aristotle’s different approaches towards artistic activity, is divided into three parts. The first part discusses Plato’s Ion on mimesis and technē, as well as the role that poetry plays in the Republic. The second section offers an account of Aristotle’s idea of happiness as the end of action. Thelast section of this study deals with an attempt to reconcile Plato and Aristotle’s attitude towards mimetic art in a treatise by a Neoplatonic renaissance thinke...

  1. A Similar Comparison between the Thought of Plato and Confucius on Social Hierarchy and Elitism

    Institute of Scientific and Technical Information of China (English)

    杨馥遥

    2014-01-01

    The spring-autumn period and warring state period of Chinese thoughts coincide strikingly with the thoughts of the Hel enic Age in the west. Plato and Confucius, the two outstanding seminal thinkers have shaped the philosophy of their respective cultures through some similar means and thoughts which definitely meet at a series of significant points. The highlight of the academic thesis lies in the comparison of the general similarities be-tween Plato and Confucius especial y in terms of social hierarchy and elitism.

  2. Plains Traveler

    Science.gov (United States)

    2006-01-01

    10 April 2006 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a dust devil traveling across a plain west-southwest of Schiaparelli Crater, in far eastern Sinus Meridiani. The dust devil is casting a shadow toward the northeast, just south (below) of an egg-shaped crater. Location near: 6.4oS, 349.3oW Image width: 3 km (1.9 mi) Illumination from: lower left Season: Southern Summer

  3. Travel during Pregnancy

    Science.gov (United States)

    ... Events Advocacy For Patients About ACOG Travel During Pregnancy Home For Patients Search FAQs Travel During Pregnancy ... Pregnancy FAQ055, February 2016 PDF Format Travel During Pregnancy Pregnancy When is the best time to travel ...

  4. The PLATO End-to-End CCD Simulator -- Modelling space-based ultra-high precision CCD photometry for the assessment study of the PLATO Mission

    CERN Document Server

    Zima, W; De Ridder, J; Salmon, S; Catala, C; Kjeldsen, H; Aerts, C

    2010-01-01

    The PLATO satellite mission project is a next generation ESA Cosmic Vision satellite project dedicated to the detection of exo-planets and to asteroseismology of their host-stars using ultra-high precision photometry. The main goal of the PLATO mission is to provide a full statistical analysis of exo-planetary systems around stars that are bright and close enough for detailed follow-up studies. Many aspects concerning the design trade-off of a space-based instrument and its performance can best be tackled through realistic simulations of the expected observations. The complex interplay of various noise sources in the course of the observations made such simulations an indispensable part of the assessment study of the PLATO Payload Consortium. We created an end-to-end CCD simulation software-tool, dubbed PLATOSim, which simulates photometric time-series of CCD images by including realistic models of the CCD and its electronics, the telescope optics, the stellar field, the pointing uncertainty of the satellite ...

  5. Travelling with HIV

    DEFF Research Database (Denmark)

    Nielsen, Ulla S; Jensen-Fangel, Søren; Pedersen, Gitte

    2013-01-01

    We aimed to describe travel patterns, extent of professional pre-travel advice and health problems encountered during travel among HIV-infected individuals.......We aimed to describe travel patterns, extent of professional pre-travel advice and health problems encountered during travel among HIV-infected individuals....

  6. ST-elevation acute coronary syndromes in the Platelet Inhibition and Patient Outcomes (PLATO) trial

    DEFF Research Database (Denmark)

    Armstrong, Paul W; Siha, Hany; Fu, Yuling;

    2012-01-01

    Ticagrelor, when compared with clopidogrel, reduced the 12-month risk of vascular death/myocardial infarction and stroke in patients with ST-elevation acute coronary syndromes intended to undergo primary percutaneous coronary intervention in the PLATelet inhibition and patient Outcomes (PLATO) tr...

  7. Democratic Freedom and the Concept of Freedom in Plato and Aristotle

    Directory of Open Access Journals (Sweden)

    Mogens Herman Hansen

    2010-11-01

    Full Text Available Among the several meanings of eleutheria used by Greeks in the classical period, democratic freedom is rejected by both Plato and Aristotle, who do not articulate a theory of political freedom but rather confine eleutheria to a social context.

  8. Freud, Plato and Irigaray: A Morpho-Logic of Teaching and Learning

    Science.gov (United States)

    Peers, Chris

    2012-01-01

    This article discusses two well-known texts that respectively describe learning and teaching, drawn from the work of Freud and Plato. These texts are considered in psychoanalytic terms using a methodology drawn from the philosophy of Luce Irigaray. In particular the article addresses Irigaray's approach to the analysis of speech and utterance as a…

  9. Dialectic of Eros and Myth of the Soul in Plato's Phaedrus

    DEFF Research Database (Denmark)

    Larsen, Jens Kristian

    2010-01-01

    In this paper, I question a widespread reading of a passage in the last part of the Phaedrus dealing with the science of dialectic. According to this reading, the passage announces a new method peculiar to the later Plato aiming at defining natural kinds. I show that the Phaedrus itself does not ...

  10. Evaluation of a Three Year Health Sciences PLATO IV Computer-Based Education Project.

    Science.gov (United States)

    Sorlie, William E.; Essex, Diane L.

    Significant findings of the comprehensive evaluation of a computer-based curriculum in the basic medical sciences using the PLATO IV computer system are presented. The study was conducted by the Office of Curriculum and Evaluation (OCE) of the School of Basic Medical Sciences (SBMS) at the University of Illinois, Urbana/Champaign (UC). It was…

  11. Cost of Initial Development of PLATO Instruction in Veterinary Medicine. CERL Report X-43.

    Science.gov (United States)

    Grimes, George M.

    An academic program instituting the PLATO system of computer-assisted instruction at the University of Illinois College of Veterinary Medicine is discussed. Procedures involved setting up an organization, establishing an administrative system, studying capabilities of the system, studying factors making a lesson suitable for programming, and…

  12. From Dialogos to Dialogue: The Use of the Term from Plato to the Second Century CE

    Directory of Open Access Journals (Sweden)

    Katarzyna Jazdzewska

    2014-02-01

    Full Text Available In Plato the verb διαλέγεσθαι is far more common than the noun, and both denote question-and-answer discussions; it was only in the Hellenistic period that διάλογος became a genre term, though its other meanings survived.

  13. Two examples of the relation between the contemporary science and Plato

    CERN Document Server

    Antonello, Elio

    2016-01-01

    The philosopher Plato is remembered even today by scientists, and his writings are still inspiring the scientific research. In the present short note (intended essentially for public outreach) two examples are briefly illustrated: 1) the European space project that bears his name, dedicated to the discovery of exoplanets; 2) the discussion about platonism in contemporary physics.

  14. Grades 1-8, Apache Junction Unified School District 43, Apache Junction, Arizona. PLATO Evaluation Series.

    Science.gov (United States)

    Quinn, David W.; Quinn, Nancy W.

    Apache Junction Unified School District, Arizona, has embarked on a 5-year program of instructional improvement using technology. PLATO Elementary reading and mathematics products were installed in the district's elementary and middle schools at the beginning of the 1999-2000 school year. This evaluation studied the use and preliminary student…

  15. Can Prior Knowledge Hurt Text Comprehension? An Answer Borrowed from Plato, Aristotle, and Descartes.

    Science.gov (United States)

    Friedman, Lawrence B.

    Taking a philosophical approach based on what Plato, Aristotle, and Descartes said about knowledge, this paper addresses some of the murkiness in the conceptual space surrounding the issue of whether prior knowledge does or does not facilitate text comprehension. Specifically, the paper first develops a non-exhaustive typology of cases in which…

  16. A Philosophical Investigation of the Role of Teachers: A Synthesis of Plato, Confucius, Buber, and Freire

    Science.gov (United States)

    Shim, Seung Hwan

    2008-01-01

    This study proposes the ideal role of teachers through the examination of Plato, Confucius, Buber, and Freire on the subject. Teachers not only contribute to the development of individuals and societies but also attain self-realization through teaching. As such, the role of teachers is important as a goal as well as a means. To examine such role,…

  17. Genesis 2–3 and Alcibiades's speech in Plato's Symposium: A ...

    African Journals Online (AJOL)

    2015-08-26

    Aug 26, 2015 ... Friedländer 1975:26f; Gauss 1958:111–117) is the last speech in Plato's ... leader (450–404/3 BCE), appears to be in a great state of intoxication .... command (Gn 2:18: 'You are free to eat of all the trees in the garden.

  18. Freud, Plato and Irigaray: A Morpho-Logic of Teaching and Learning

    Science.gov (United States)

    Peers, Chris

    2012-01-01

    This article discusses two well-known texts that respectively describe learning and teaching, drawn from the work of Freud and Plato. These texts are considered in psychoanalytic terms using a methodology drawn from the philosophy of Luce Irigaray. In particular the article addresses Irigaray's approach to the analysis of speech and utterance as a…

  19. From Plato to Erikson: How the War on "Bad Play" Has Impoverished Higher Education

    Science.gov (United States)

    Carnes, Mark C.

    2015-01-01

    For centuries, the titans of educational reform--Plato, Rousseau, Dewey, Piaget, Erikson, Csikszentmihalyi and others--have championed the educational benefits of play. Yet many professors and administrators are boggled by the idea of playing academic games in college. They instantly dismiss faculty initiatives like "Reacting to the…

  20. Time series analysis of travel trends in Vermont

    Science.gov (United States)

    Varna M. Ramaswamy; Walter F. Kuentzel

    1995-01-01

    Vermont's travel and tourism industry is not keeping pace with the nation-wide growth in the travel industry. While travel indicators such as domestic travel expenditures, tourism generated employment, payroll and tax receipts have been steadily increasing across the United States, these indicators in Vermont peaked in 1978 and have declined ever since. The state...

  1. Capturing travel entities to facilitate travel behaviour analysis : A case study on generating travel diaries from trajectories fused with accelerometer readings

    OpenAIRE

    Prelipcean, Adrian Corneliu

    2016-01-01

    The increase in population, accompanied by an increase in the availability of travel opportunities have kindled the interest in understanding how people make use of the space around them and their opportunities. Understanding the travel behaviour of individuals and groups is difficult because of two main factors: the travel behaviour's wide coverage, which encompasses different research areas, all of which model different aspects of travel behaviour, and the difficulty of obtaining travel dia...

  2. Time - A Traveler's Guide

    Science.gov (United States)

    Pickover, Clifford A.

    1999-09-01

    "Bucky Fuller thought big," Wired magazine recently noted, "Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both." In his newest book, Cliff Pickover outdoes even himself, probing a mystery that has baffled mystics, philosophers, and scientists throughout history--What is the nature of time?In Time: A Traveler's Guide , Pickover takes readers to the forefront of science as he illuminates the most mysterious phenomenon in the universe--time itself. Is time travel possible? Is time real? Does it flow in one direction only? Does it have a beginning and an end? What is eternity? Pickover's book offers a stimulating blend of Chopin, philosophy, Einstein, and modern physics, spiced with diverting side-trips to such topics as the history of clocks, the nature of free will, and the reason gold glitters. Numerous diagrams ensure readers will have no trouble following along.By the time we finish this book, we understand a wide variety of scientific concepts pertaining to time. And most important, we will understand that time travel is, indeed, possible.

  3. Travelers' Health: Water Disinfection for Travelers

    Science.gov (United States)

    ... Chapter 2 - Food Poisoning from Marine Toxins Water Disinfection for Travelers Howard D. Backer RISK FOR TRAVELERS ... of iodine and chlorine (see Halogens below). Chemical Disinfection HALOGENS The most common chemical water disinfectants are ...

  4. Travel/Travelers and Parasitic Diseases

    Science.gov (United States)

    ... care providers. Health departments, the travel industry, multinational corporations, missionary and volunteer organizations, and travelers can also ... PPT, MPEG) on this site? Adobe PDF file Microsoft PowerPoint file Microsoft Word file Microsoft Excel file ...

  5. Travelers' Health: HIV Infection

    Science.gov (United States)

    ... Last-Minute Travel Long-Term Travel Mass Gatherings Medical Tourism Mental Health Motion Sickness Natural Disasters Pregnant Travelers ... for purposes of medical treatment (see Chapter 2, Medical Tourism ), the blood and blood products used in the ...

  6. Travelers' Health: Mumps

    Science.gov (United States)

    ... submit Start of Search Controls Search Form Controls Travelers' Health Note: Javascript is disabled or is not ... FAQ Stamaril clinics Disease Directory Resources Resources for Travelers Adventure Travel Animal Safety Blood Clots Bug Bites ...

  7. Travelers' Health: Motion Sickness

    Science.gov (United States)

    ... Disease Directory Resources Resources for Travelers Adventure Travel Animal Safety Blood Clots Bug Bites Business Travel Cold ... motion sickness. Adding distractions—controlling breathing, listening to music, or using aromatherapy scents such as mint or ...

  8. Plato, Wilde, and Woolf: the poetics of homoerotic "intercourse" in A Room of One's Own.

    Science.gov (United States)

    Vanita, Ruth

    2010-01-01

    This article places Woolf in the context of homoerotic literary ancestry. It suggests that the overall argument in A Room of One's Own owes a debt to Wilde's 1891 pamphlet The Soul of Man under Socialism. It also examines Woolf's controversial meditation on male-female collaboration and intercourse in A Room, and suggests a homoerotic reading of this meditation, drawing on images and ideas of literary transmission and creation from Plato's Symposium.

  9. The philosopher Socrates had exophthalmos (a term coined by Plato) and probably Graves' disease.

    Science.gov (United States)

    Papapetrou, Peter D

    2015-01-01

    According to a previously published theory, Socrates was afflicted with temporal lobe epilepsy since his childhood. Plato, Xenophon, and Aristoxenus described Socrates as having exophthalmos, probably diplopia, and some symptoms compatible with hyperthyroidism. Using these data, we theorize that Socrates had Graves' disease. In order to determine a cause of his temporal lobe epilepsy, we speculate that the philosopher also had autoimmune thyroiditis and Hashimoto encephalopathy during his childhood and his epilepsy may have been a sequel to this hypothesized encephalopathy.

  10. The Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    Young, Stanley

    2017-04-24

    The Connected Traveler project is a multi-disciplinary undertaking that seeks to validate potential for transformative transportation system energy savings by incentivizing energy efficient travel behavior.

  11. The instrument control unit of the ESA-PLATO 2.0 mission

    Science.gov (United States)

    Focardi, M.; Pezzuto, S.; Cosentino, R.; Giusi, G.; Pancrazzi, M.; Noce, V.; Ottensamer, R.; Steller, M.; Di Giorgio, A. M.; Pace, E.; Plasson, P.; Peter, G.; Pagano, I.

    2016-07-01

    PLATO 2.0 has been selected by ESA as the third medium-class Mission (M3) of the Cosmic Vision Program. Its Payload is conceived for the discovery of new transiting exoplanets on the disk of their parent stars and for the study of planetary system formation and evolution as well as to answer fundamental questions concerning the existence of other planetary systems like our own, including the presence of potentially habitable new worlds. The PLATO Payload design is based on the adoption of four sets of short focal length telescopes having a large field of view in order to exploit a large sky coverage and to reach, at the same time, the needed photometry accuracy and signalto- noise ratio (S/N) within a few tens of seconds of exposure time. The large amount of data produced by the telescope is collected and processed by means of the Payload's Data Processing System (DPS) composed by many processing electronics units. This paper gives an overview of the PLATO 2.0 DPS, mainly focusing on the architecture and processing capabilities of its Instrument Control Unit (ICU), the electronic subsystem acting as the main interface between the Payload (P/L) and the Spacecraft (S/C).

  12. Travel time and travel cost in European air travel

    OpenAIRE

    Dusek, Tamas

    2012-01-01

    The aim of the study is to examine two issues of consumer air travel accessibility in Europe, namely flight time and ticket costs. The first part of the paper discusses the various methodological problems of creating time matrix and cost matrix of air travel. Because of problems of conceptualizing of the air travel network and the modifiable areal unit problem the analysis is conducted on several spatial levels. The smallest network consists of 15 busiest airports and the largest network has ...

  13. Childhood and Travel Literature.

    Science.gov (United States)

    Espey, David

    If children are not present in most travel literature--precisely because the genre has most typically been the domain of solitary male travelers who are escaping domestic obligation, routine, the familiar, and the family--they nevertheless are an integral part of the genre. The traveler is in many ways a child, an innocent abroad. Traveler writers…

  14. Travel-related illness.

    Science.gov (United States)

    Ziegler, Carol C

    2013-06-01

    Travel abroad for business and pleasure should be safe and meaningful for the traveler. To assure that safe experience, certain processes should be considered before travel. A thorough pretravel health assessment will offer patients and health care providers valuable information for anticipatory guidance before travel. The destination-based risk assessment will help determine the risks involved in travel to specific locations and guide in the development of contingency plans for all travelers, especially those with chronic conditions. Diseases are more prevalent overseas, and immunizations and vaccinations are all important considerations for persons traveling abroad.

  15. Home range and travels

    Science.gov (United States)

    Stickel, L.F.; King, John A.

    1968-01-01

    The concept of home range was expressed by Seton (1909) in the term 'home region,' which Burr (1940, 1943) clarified with a definition of home range and exemplified in a definitive study of Peromyscus in the field. Burt pointed out the ever-changing characteristics of home-range area and the consequent absence of boundaries in the usual sense--a finding verified by investigators thereafter. In the studies summarized in this paper, sizes of home ranges of Peromyscus varied within two magnitudes, approximately from 0.1 acre to ten acres, in 34 studies conducted in a variety of habitats from the seaside dunes of Florida to the Alaskan forests. Variation in sizes of home ranges was correlated with both environmental and physiological factors; with habitat it was conspicuous, both in the same and different regions. Food supply also was related to size of home range, both seasonally and in relation to habitat. Home ranges generally were smallest in winter and largest in spring, at the onset of the breeding season. Activity and size also were affected by changes in weather. Activity was least when temperatures were low and nights were bright. Effects of rainfall were variable. Sizes varied according to sex and age; young mice remained in the parents' range until they approached maturity, when they began to travel more widely. Adult males commonly had larger home ranges than females, although there were a number of exceptions. An inverse relationship between population density and size of home range was shown in several studies and probably is the usual relationship. A basic need for activity and exploration also appeared to influence size of home range. Behavior within the home range was discussed in terms of travel patterns, travels in relation to home sites and refuges, territory, and stability of size of home range. Travels within the home range consisted of repeated use of well-worn trails to sites of food, shelter, and refuge, plus more random exploratory travels

  16. Rabies in travelers.

    Science.gov (United States)

    Gautret, Philippe; Parola, Philippe

    2014-03-01

    Most cases of rabies in travelers are associated with dog bites and occur in adults who are commonly migrants. The incidence of injuries to travelers caused by potentially rabid animals is approximately 0.4 % per month of stay. Dogs account for 51 % of cases, but nonhuman primates are the leading animals responsible for injuries in travelers returning from Southeast Asia. Travel to Southeast Asia, India and North Africa, young age, and traveling for tourism are risk factors for potential exposure. More than 70 % of travelers are not immunized prior to departing and do not receive adequate care when injured. The intradermal vaccination route has been proven economical, safe and immunogenic in travelers. The immunity provided by the three-dose series is long-lasting and should be considered an investment for future travel. Abbreviated schedules may be used for last-minute travelers.

  17. The Travelling Telescope

    Science.gov (United States)

    Murabona Oduori, Susan

    2015-08-01

    The telescope has been around for more than 400 years, and through good use of it scientists have made many astonishing discoveries and begun to understand our place in the universe. Most people, however, have never looked through one. Yet it is a great tool for cool science and observation especially in a continent and country with beautifully dark skies. The Travelling Telescope project aims to invite people outside under the stars to learn about those curious lights in the sky.The Travelling Telescope aims to promote science learning to a wide range of Kenyan schools in various locations exchanging knowledge about the sky through direct observations of celestial bodies using state of the art telescopes. In addition to direct observing we also teach science using various hands-on activities and astronomy software, ideal for explaining concepts which are hard to understand, and for a better grasp of the sights visible through the telescope. We are dedicated to promoting science using astronomy especially in schools, targeting children from as young as 3 years to the youth, teachers, their parents and members of the public. Our presentation focuses on the OAD funded project in rural coastal Kenya.

  18. Echoes in Plato's cave : ontology of sound objects in computer music and analysis

    OpenAIRE

    Marsden, Alan

    2014-01-01

    The sonic aspects of Plato's analogy of the cave is taken as a starting point for thought experiments to investigate the objective nature of sound, and the idea of quasi-Platonic forms in music. Sounds are found to be objects in a way that sights or appearances are not, and it is only in the presence of technology that they become artificial. When recognition, control and communication about sound come into play, abstract concepts emerge, but there is no reason to give these the priority stat...

  19. Ontological Questions in Schelling’s Late Philosophy: Plato and Aristotle

    Directory of Open Access Journals (Sweden)

    Jean-François Courtine

    2010-09-01

    Full Text Available The purpose of the article is to understand the reasons and procedures employed by F. W. Schelling in his Plato and Aristotle re-appropriation, and to extract the authentically ontological thematic of it. It makes a path through the Schelling’s late writings and letters, to construct a complete view about the relation between this appropriation and the possibility of the constitution of a positive philosophy, as a particular science, in opposition to a negative philosophy, understood as metaphysics.

  20. Numbers Rule The Vexing Mathematics of Democracy, from Plato to the Present

    CERN Document Server

    Szpiro, George G

    2010-01-01

    Since the very birth of democracy in ancient Greece, the simple act of voting has given rise to mathematical paradoxes that have puzzled some of the greatest philosophers, statesmen, and mathematicians. Numbers Rule traces the epic quest by these thinkers to create a more perfect democracy and adapt to the ever-changing demands that each new generation places on our democratic institutions. In a sweeping narrative that combines history, biography, and mathematics, George Szpiro details the fascinating lives and big ideas of great minds such as Plato, Pliny the Younger, Ramon Llull, Pierre Simo

  1. Travel Inside the Ear

    Science.gov (United States)

    ... Home » Health Info » Hearing, Ear Infections, and Deafness Travel Inside the Ear Video When sound waves reach ... are smaller than an orange seed. It then travels into the inner ear, which is filled with ...

  2. Traveling Safely with Medicines

    Science.gov (United States)

    ... Medications Safely My Medicine List How to Administer Traveling Safely with Medicines Planes, trains, cars – even boats ... your trip, ask your pharmacist about how to travel safely with your medicines. Make sure that you ...

  3. Travelers' Health: Yellow Fever

    Science.gov (United States)

    ... Drugs Cruise Ship Travel Families with Children Fish Poisoning in Travelers Food and Water Getting Health Care ... removal of their thymus or have had indirect radiation therapy in the distant past, these people can ...

  4. End to End Travel

    Data.gov (United States)

    US Agency for International Development — E2 Solutions is a web based end-to-end travel management tool that includes paperless travel authorization and voucher document submissions, document approval...

  5. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain tr

  6. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain

  7. Traveling and Asthma

    Science.gov (United States)

    ... Emergency Room? What Happens in the Operating Room? Traveling and Asthma KidsHealth > For Kids > Traveling and Asthma A A A What's in this ... t have to get in the way of travel fun. Let's find out how to be prepared ...

  8. Travel epidemiology. WHO perspective.

    Science.gov (United States)

    Gezairy, Hussein A

    2002-12-01

    International travel is undertaken by large, and ever increasing numbers of people for professional, social, recreational and humanitarian purposes, and this upward trend looks set to continue. Travelers are exposed to a variety of health risks of the unfamiliar environment of the visited area. The risk of exposure is determined by destination, duration of the visit, purpose of the visit, behavior of the traveler and underlying physical and biological status of the traveler. However, most risks can be minimized by suitable precautions taken before, during and after travel. Travelers can themselves, also, easily introduce any infectious agents they may harbor to the visited area. Many infectious diseases have been introduced in many parts of the world through travel and trade. Travel has been identified as a prime factor in the global spread of infectious diseases. In a world of rapid air travel, no country is safe from infectious diseases. An outbreak in one country can easily and rapidly be transmitted across long distances to affect other countries through travel and trade. The World Health Organization devotes great attention to prevention and control of global spread of infectious diseases and minimizing the negative effect of international travel on health. The main strategies of the World Health Organization for minimizing the negative effects of expanding travel on global health security include developing the necessary strategies, rules and regulations; strengthening global communicable diseases surveillance and response; dissemination of related information throughout the world and strengthening national capacity for communicable diseases surveillance and response.

  9. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain tr

  10. Philosophy and Mathematics in the Teaching of Plato: the Development of Idea and Modernity

    Directory of Open Access Journals (Sweden)

    Mikhailova N. V.

    2014-01-01

    Full Text Available It is well known that the largest philosophers differently explain the origin of mathematics. This question was investigated in antiquity, a substantial and decisive role in this respect was played by the Platonic doctrine. Therefore, discussing this issue the problem of interaction of philosophy and mathematics in the teachings of Plato should be taken into consideration. Many mathematicians believe that abstract mathematical objects belong in a certain sense to the world of ideas and that consistency of objects and theories really describes mathematical reality, as Plato quite clearly expressed his views on math, according to which mathematical concepts objectively exist as distinct entities between the world of ideas and the world of material things. In the context of foundations of mathematics, so called “Gödel’s Platonism” is of particular interest. It is shown in the article how Platonic objectification of mathematical concepts contributes to the development of modern mathematics by revealing philosophical understanding of the nature of abstraction. To substantiate his point of view, the author draws the works of contemporary experts in the field of philosophy of mathematics.

  11. The PLATO Simulator: Modelling of High-Precision High-Cadence Space-Based Imaging

    CERN Document Server

    Marcos-Arenal, P; De Ridder, J; Aerts, C; Huygen, R; Samadi, R; Green, J; Piotto, G; Salmon, S; Catala, C; Rauer, H

    2014-01-01

    Many aspects of the design trade-off of a space-based instrument and its performance can best be tackled through simulations of the expected observations. The complex interplay of various noise sources in the course of the observations make such simulations an indispensable part of the assessment and design study of any space-based mission. We present a formalism to model and simulate photometric time series of CCD images by including models of the CCD and its electronics, the telescope optics, the stellar field, the jitter movements of the spacecraft, and all important natural noise sources. This formalism has been implemented in a versatile end-to-end simulation software tool, called PLATO Simulator, specifically designed for the PLATO space mission to be operated from L2, but easily adaptable to similar types of missions. We provide a detailed description of several noise sources and discuss their properties, in connection with the optical design, the allowable level of jitter, the quantum efficiency of th...

  12. Travelers' Health: Water Disinfection for Travelers

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... prevent recontamination during storage Table 2-10. Microorganism size and susceptibility to filtration ORGANISM AVERAGE SIZE (µm) ...

  13. Comprehensive care of travelers.

    Science.gov (United States)

    Pust, R E; Peate, W F; Cordes, D H

    1986-12-01

    Travel, especially if it is international, often means major changes for the family. Family physicians should assess the epidemiologic risk and psychosocial significance of travel or relocation in light of the family's life-cycle stage and antecedent health. Using core references, which are kept current in partnership with public health agencies, family physicians are able to provide comprehensive immunization, medications, and patient education for all travel risks. Families are given medical record summaries and recommended sources of care at their destination. Eight weeks after their return patients are reassessed for newly acquired illness and helped to integrate the perspectives gained during the travel into the family's future dynamics. Taking advantage of growing travel medicine opportunities, family medicine educators should base the care of travelers and teaching of residents on defined competence priorities. Travelers' health provides a mutually rewarding model of shared care with public health consultants in the community medicine curriculum.

  14. Dialectic and Dialogue in Plato: Refuting the Model of Socrates-as-Teacher in the Pursuit of Authentic "Paideia"

    Science.gov (United States)

    Magrini, James Michael

    2014-01-01

    Incorporating Gadamer and other thinkers from the continental tradition, this essay is a close and detailed hermeneutic, phenomenological, and ontological study of the dialectic practice of Plato's Socrates--it radicalizes and refutes the Socrates-as-teacher model that educators from scholar academic ideology embrace.

  15. Three Aspects of PLATO Use at Chanute AFB: CBE Production Techniques, Computer-Aided Management, Formative Development of CBE Lessons.

    Science.gov (United States)

    Klecka, Joseph A.

    This report describes various aspects of lesson production and use of the PLATO system at Chanute Air Force Base. The first chapter considers four major factors influencing lesson production: (1) implementation of the "lean approach," (2) the Instructional Systems Development (ISD) role in lesson production, (3) the transfer of…

  16. A Plan for the Evaluation of a Project to Develop Basic Medical Sciences Lessons on PLATO IV.

    Science.gov (United States)

    Jones, Les A.; And Others

    A project to introduce PLATO IV computer-assisted instruction (CAI) in medical sciences education for health professionals was implemented at the School of Basic Medical Sciences at the University of Illinois. This paper describes the plan for evaluation of the project. Using a student questionnaire and additional general questions, the…

  17. An Evaluation of the Teaching Effectiveness of PLATO in a First Level Biology Course. CERL Report X-32.

    Science.gov (United States)

    Arsenty, Richard P.; Kieffer, George H.

    This paper describes a study of the teaching effectiveness of computer-assisted instruction using the PLATO system at the University of Illinois in a first level biology course. College enrollment, class rank, final grade, and time study data of the control and experimental groups were obtained from master rosters. A questionnaire administered to…

  18. The Education of the Third Class in "The Republic": Plato and the "Locus Classicus" of Formative Justice

    Science.gov (United States)

    Mintz, Avi I.

    2016-01-01

    Background/Context: In one of the classics of educational philosophy, a key issue is remains unsettled. In Plato's "Republic," Socrates makes a case for the importance of a comprehensive education. Socrates is unclear, however, about whether the producer class is eligible for this comprehensive education. Purpose/Objective: Previous…

  19. Dialectic and Dialogue in Plato: Refuting the Model of Socrates-as-Teacher in the Pursuit of Authentic "Paideia"

    Science.gov (United States)

    Magrini, James Michael

    2014-01-01

    Incorporating Gadamer and other thinkers from the continental tradition, this essay is a close and detailed hermeneutic, phenomenological, and ontological study of the dialectic practice of Plato's Socrates--it radicalizes and refutes the Socrates-as-teacher model that educators from scholar academic ideology embrace.

  20. Valuation of travel time for international long-distance travel - results from the Fehmarn Belt stated choice experiment

    DEFF Research Database (Denmark)

    Mabit, Stefan Lindhard; Rich, Jeppe; Burge, Peter

    2013-01-01

    significant interactions among travel cost and time, and journey characteristics, such as distance and duration. This had direct impact on the VTTS, which was shown to decrease with distance and duration. Thirdly, we found that air travel implies a higher average VTTS, which is to be expected but rarely......The geographical scope of travel varies from short distances in urban areas to long distances across cities and countries. While urban travel has been widely analysed in the literature, travel over longer distances and particularly across countries, has received much less attention. While this may...... be justified due to the number of travellers it cannot be justified when looking at the mileage consumption and its resulting environmental impacts. In this paper, we investigate international long-distance travel preferences related to travel between Scandinavia and Central Europe with particular focus...

  1. The Image of travelling

    DEFF Research Database (Denmark)

    Grand, Karina Lykke

    2017-01-01

    and experienced and how he interpreted this knowledge, visually and in words. Rørbye is my primary research focus, but his artistic struggles are very similar to other artists travelling in Italy at the time. I therefore use Martinus Rørbye’s Italian sojourn as a prism of interpretation.......The Danish painter Martinus Rørbye was among of the Danish artists to reinvent the traditions of the genre of travel painting in the 1830s. His changes and developments of a new complex pictorial strategy were in many ways an answer to the changes in society, especially the advent of tourism....... The new travel image had its focus on concurrency, everyday life and the secular world, resulting in images that anticipated the photographic travel image, the snapshot and the travel postcard. The advent of this new strategy proved to have a very long after-life, as tourists and travellers of today still...

  2. Histoplasmosis in Israeli travelers.

    Science.gov (United States)

    Segel, Michael J; Rozenman, Judith; Lindsley, Mark D; Lachish, Tamar; Berkman, Neville; Neuberger, Ami; Schwartz, Eli

    2015-06-01

    Histoplasmosis is a common endemic human mycoses acquired mostly in the Americas. We reviewed 23 cases of histoplasmosis in Israeli travelers; 22 had traveled to Central or South America and one to North America. Fourteen cases had been exposed to bat habitats and were symptomatic, presenting ≤ 3 months after their return. Asymptomatic patients (N = 9) were diagnosed during the evaluation of incidental radiological findings or because a travel partner had been suspected of Histoplasma infection, 16-120 months after their return. Serological testing was positive in 75% of symptomatic cases but only 22% of asymptomatic cases. Histoplasmosis should be considered in travelers returning from the Americas with respiratory or febrile illness within weeks of return, particularly if exposed to bat habitats. Travel history is essential in patients presenting with pulmonary nodules, even years after travel to endemic countries.

  3. TRAVEL AND HOME LEAVE

    CERN Multimedia

    Human Resources Division

    2002-01-01

    Administrative procedures for : Travel to the home station and home leave (hl) Additional travel to the home station (at) Travel to the home station and home leave for family reasons (hlf) As part of the process of simplifying administrative procedures, HR and AS Divisions have devised a new, virtually automatic procedure for payment of travel expenses to the home station. The changes are aimed at rationalising administrative procedures and not at reducing benefits. The conditions of eligibility are unchanged. The new procedure, which will be operational with effect from 1st June 2002, will greatly simplify the administrative processing of claims for travel expenses and the recording of home leaves. Currently, requests for payment are introduced manually into the Advances and Claims system (AVCL) by divisional secretariats. All travel to the home station starting prior to 1st June 2002 will be processed according to the existing system whereas that starting on 1st June and after will be processed accordi...

  4. FORMS OF YOUTH TRAVEL

    OpenAIRE

    Moisã Claudia Olimpia

    2011-01-01

    Taking into account the suite of motivation that youth has when practicing tourism, it can be said that the youth travel takes highly diverse forms. These forms are educational tourism, volunteer programs and “work and travel”, cultural exchanges or sports tourism and adventure travel. In this article, we identified and analyzed in detail the main forms of youth travel both internationally and in Romania. We also illustrated for each form of tourism the specific tourism products targeting you...

  5. Update on travelers' health.

    Science.gov (United States)

    Weber, Carol J

    2005-10-01

    As an international traveler, contact your health care provider at least 4 to 6 weeks before departure to obtain needed vaccinations and prophylactic medications. Be aware of the occurrence of any disease outbreaks in the countries you are visiting. While traveling, don't forget that one of the most important practices in preventing illness from infections is handwashing. Wash your hands carefully and frequently with soap and water, and if soap and water are not available use an alcohol-based hand rub. Be a responsible traveler by becoming informed about health risks and what to do to avoid them before you travel.

  6. The Theory of Argumentation within Language and its relation to Plato, Saussure and Benveniste

    Directory of Open Access Journals (Sweden)

    Cristiane Dall'Cortivo-Lebler

    2014-12-01

    Full Text Available The Theory of Argumentation within Language, developed by Oswald Ducrot, Jean-Claude Anscombre and Marion Carel, has experienced along its development different phases and forms, constantly seeking to align to what its main developer, Oswald Ducrot, called external hypotheses and internal hypotheses. This paper discusses the presence of Linguistic Theories and Philosophy in Ducrot’s work regarding concepts of Plato, Ferdinand de Saussure and Émile Benveniste, which constitute its external assumptions. The presence of these concepts culminated in the creation of different concepts that comprise the Linguistic Semantics, and gave it a specific point of view about language that emphasizes the internal relationships among language components and understands that speech is the result of a linguistic activity where an “I” speaks to a “you”.

  7. Efficient methods for solving discrete topology design problems in the PLATO-N project

    DEFF Research Database (Denmark)

    Canh, Nam Nguyen; Stolpe, Mathias

    This paper considers the general multiple load structural topology design problems in the framework of the PLATO-N project. The problems involve a large number of discrete design variables and were modeled as a non-convex mixed 0–1 program. For the class of problems considered, a global...... optimization method based on the branch-and-cut concept was developed and implemented. In the method a large number of continuous relaxations were solved. We also present an algorithm for generating cuts to strengthen the quality of the relaxations. Several heuristics were also investigated to obtain efficient...... algorithms. The branch and cut method is used to solve benchmark examples which can be used to validate other methods and heuristics....

  8. Banishing the Poet: The Pedagogical Function of Mythology in the Dialogues of Plato

    Directory of Open Access Journals (Sweden)

    Javier Martínez

    2013-06-01

    Full Text Available This text attempts to develop a sound justification for Plato’s pedagogical use of myth in the dialogues. In particular, I seek to resolve a seeming contradiction: why Plato personally made use of myths in spite of his many statements that seem to contradict such a pedagogical approach, especially his edict that poets and myth-makers be banished from his republic for the danger their works pose to the attainment of true philosophical wisdom. An analysis of the centrality of myths to the dialogues is carried out, followed by a discussion of the place of muthos in its Ionian historical context. This establishes the basis for resolving the contradiction through the division of muthos into two distinct modes: the fantastic and the eikastic.

  9. Arete and Gender-Differentiation in Socrates/Plato and Aristotle

    Directory of Open Access Journals (Sweden)

    Thomas Robinson

    1998-12-01

    Full Text Available The article grapples with the question whether Plato believed that, in the matter of arete, the female psyche had a built-in inclination to immorality in a way that the male psyche did not, and was therefore assuch signiticantly different from the male psyche. It is argued that the evidence of the Timaeus ( and, to some lesser degree, of the Laws suggests very strongly that he did, though fortunately the political consequence she drew from this (in the Laws tum out to be positive rather than negative. Aristotle, by contrast,it is argued, while still holding to the lamentable theory of the inferiority of woman, talks of ditl'eringquanta of (one and the same arete in male and female souls, rather than a difference in their very arete.

  10. Platón y el silogismo Plato and the syllogism

    Directory of Open Access Journals (Sweden)

    Manuel Correia Machuca

    2010-03-01

    Full Text Available La cuestión de si Platón pudo ser el autor de una primera noción de deducción silogística (un método que Aristóteles hizo conocido a través de una definición y un progreso teórico en los Analíticos Primeros fue discutida en la antigüedad y, desde entonces, debatida por varios comentaristas. En este artículo, comento dos pasajes de la literatura post-aristotélica, uno atestiguado por Boecio (que se remonta a Alejandro de Afrodisia y el otro presente en Juan Filópono, en su comentario a los Analíticos Primeros. El artículo intenta mostrar que estos pasajes contienen información suficiente para favorecer a Platón como conocedor de la técnica deductiva silogística, aunque no para conferirle el desarrollo de la metodología silogística.The question of whether Plato could be the author of a first concept of syllogistic deduction (a method that Aristotle made known by means of a definition and a theoretical improvement in his Prior Analytics was known in the antiquity and from that time, the question has usually examined by several commentators. In this article, I comment on two passages of post-Aristotelian tradition; one is given by Boethius (which stems from Alexander of Aphrodisias and the other was given by Johannes Philoponus in his commentary on Prior Analytics. The article intends to show that these passages contain information that is sufficient to come to an opinion favoring Plato, although it does not imply that they are sufficient to confer him the syllogistic method.

  11. Simulation results for PLATO: a prototype hybrid X-ray photon counting detector with a low energy threshold for fusion plasma diagnostics

    Science.gov (United States)

    Habib, A.; Menouni, M.; Pangaud, P.; Fenzi, C.; Colledani, G.; Moureau, G.; Escarguel, A.; Morel, C.

    2017-01-01

    PLATO is a prototype hybrid X-ray photon counting detector that has been designed to meet the specifications for plasma diagnostics for the WEST tokamak platform (Tungsten (W) Environment in Steady-state Tokamak) in southern France, with potential perspectives for ITER. PLATO represents a customized solution that fulfills high sensitivity, low dispersion and high photon counting rate. The PLATO prototype matrix is composed of 16 × 18 pixels with a 70 μm pixel pitch. New techniques have been used in analog sensitive blocks to minimize noise coupling through supply rails and substrate, and to suppress threshold dispersion across the matrix. The PLATO ASIC is designed in CMOS 0.13 μm technology and was submitted for a fabrication run in June 2016. The chip is designed to be bump-bonded to a silicon sensor. This paper presents pixel architecture as well as simulation results while highlighting novel solutions.

  12. Information for travellers' physicians.

    Science.gov (United States)

    Allison, D J; Blinco, K

    1990-07-01

    Physicians can obtain advice about international travel for their patients from many different sources of information. The authors review some of the most common sources based on their experience at the International Travellers' Clinic operated by the New Brunswick Department of Health and Community Services in Fredericton. They identify readily available handbooks and periodicals and compare two computer software programs.

  13. Information for Travellers' Physicians

    OpenAIRE

    Allison, David J; Blinco, Kimberley

    1990-01-01

    Physicians can obtain advice about international travel for their patients from many different sources of information. The authors review some of the most common sources based on their experience at the International Travellers' Clinic operated by the New Brunswick Department of Health and Community Services in Fredericton. They identify readily available handbooks and periodicals and compare two computer software programs.

  14. CARLSON WAGONLIT TRAVEL

    CERN Multimedia

    2006-01-01

    CARLSON WAGONLIT TRAVEL informs you that our agency will be closed from 22 December 2006 at 16:30 until 8 January 2007 at 8:30. For all URGENT MATTERS you can contact our CARLSON WAGONLIT TRAVEL branch at W.H.O. (Mr Pierre Plumettaz), phone: 022 791 55 95. We wish you already a Merry Christmas and a Happy New Year!

  15. Traveling and Asthma

    Science.gov (United States)

    ... What Happens in the Operating Room? Traveling and Asthma KidsHealth > For Kids > Traveling and Asthma A A A What's in this article? Pack ... Or how about sleepover camp? If you have asthma , you'll be packing more than your clothes ...

  16. The traveling transect

    DEFF Research Database (Denmark)

    Braae, Ellen Marie; Diedrich, Lisa; Lee, Gini

    2013-01-01

    conditions, correspond to the fields of natural sciences and to spatial aesthetics. The Travelling Transect method, inspired by Alexander von Humboldt’s method of transareal travelling and transversal collecting of ephemeral information from site, informs our exploratory fieldwork in the water landscapes...

  17. Traveler response to information

    NARCIS (Netherlands)

    Chorus, C.G.

    2007-01-01

    The past few years have witnessed an impressive progress in the capabilities of travel information services. It is expected that in a few years, travelers will be constantly informed, pre-trip as well as en-route, about their optimal departure time, route and transport mode. The information is based

  18. Travel and transport

    DEFF Research Database (Denmark)

    Bill, Jan; Roesdahl, Else

    2007-01-01

    On the interrelationship between travel, transport and society; on land transport, sea and river transport, and on winter transport;  on the related technologies and their developments......On the interrelationship between travel, transport and society; on land transport, sea and river transport, and on winter transport;  on the related technologies and their developments...

  19. Traveling with children

    Science.gov (United States)

    ... let them inspect it. Small jars of baby food travel well. They make little waste and you can dispose of them easily. Air ... not eat raw fruits or vegetables. Eat only food that is hot and has been cooked ... and hotels for guidance and assistance. For foreign travel, check ...

  20. Epidemiology of traveler's diarrhea.

    Science.gov (United States)

    Castelli, F; Carosi, G

    1995-01-01

    Annually, over 75 million international passengers travel to tropical areas, more than 20 million of whom come from industrialized countries. They experience a high rate of traveler's diarrhea (TD), varying from 20 to 56%, which may result in serious limitations to their activities. The cause of TD is considered to be infectious in the overwhelming majority of cases and, apart from differences in relative importance, the list of responsible microbial agents is fairly constant regardless of geographic origin. The ingestion of contaminated food or water is considered to be the principal mode of transmission of the enteric pathogens of TD. Several factors have been proposed as playing a role in the etiogenesis of diarrhea in travelers, including personal (age, socioeconomic status, body weight, preexisting gastrointestinal illnesses), behavioral (mode of travel, standard of accommodation, eating in public places, dietary errors) and travel-related (destination, duration of stay, country of origin, season) factors, which are reviewed in detail.

  1. Cosmocultural Evolution: Cosmic Motivation for Interstellar Travel?

    Science.gov (United States)

    Lupisella, M.

    Motivations for interstellar travel can vary widely from practical survival motivations to wider-ranging moral obligations to future generations. But it may also be fruitful to explore what, if any, "cosmic" relevance there may be regarding interstellar travel. Cosmocultural evolution can be defined as the coevolution of cosmos and culture, with cultural evolution playing an important and perhaps critical role in the overall evolution of the universe. Strong versions of cosmocultural evolution might suggest that cultural evolution may have unlimited potential as a cosmic force. In such a worldview, the advancement of cultural beings throughout the universe could have significant cosmic relevance, perhaps providing additional motivation for interstellar travel. This paper will explore some potential philosophical and policy implications for interstellar travel of a cosmocultural evolutionary perspective and other related concepts, including some from a recent NASA book, Cosmos and Culture: Cultural Evolution in a Cosmic Context.

  2. Understanding taxi travel patterns

    Science.gov (United States)

    Cai, Hua; Zhan, Xiaowei; Zhu, Ji; Jia, Xiaoping; Chiu, Anthony S. F.; Xu, Ming

    2016-09-01

    Taxis play important roles in modern urban transportation systems, especially in mega cities. While providing necessary amenities, taxis also significantly contribute to traffic congestion, urban energy consumption, and air pollution. Understanding the travel patterns of taxis is thus important for addressing many urban sustainability challenges. Previous research has primarily focused on examining the statistical properties of passenger trips, which include only taxi trips occupied with passengers. However, unoccupied trips are also important for urban sustainability issues because they represent potential opportunities to improve the efficiency of the transportation system. Therefore, we need to understand the travel patterns of taxis as an integrated system, instead of focusing only on the occupied trips. In this study we examine GPS trajectory data of 11,880 taxis in Beijing, China for a period of three weeks. Our results show that taxi travel patterns share similar traits with travel patterns of individuals but also exhibit differences. Trip displacement distribution of taxi travels is statistically greater than the exponential distribution and smaller than the truncated power-law distribution. The distribution of short trips (less than 30 miles) can be best fitted with power-law while long trips follow exponential decay. We use radius of gyration to characterize individual taxi's travel distance and find that it does not follow a truncated power-law as observed in previous studies. Spatial and temporal regularities exist in taxi travels. However, with increasing spatial coverage, taxi trips can exhibit dual high probability density centers.

  3. [Thromboembolism in travelers].

    Science.gov (United States)

    Bihari, I; Sándor, T

    2001-11-11

    The association between long haul travel and the risk of venous thromboembolism are suspected for long time. Mostly air travel related thrombosis series have been reported in the literature. Risk factors can be classified as: 1. travel related factors (coach position, immobilization, prolonged air travel, narrow seat and room, diuretic effect of alcohol, insufficient fluid intake, dehydration, direct pressure on leg veins, rare inspiration). 2. air plane related risk factors (low humidity, relative hypoxia, stress). 3. patient related factors (hereditary and acquired thrombophylia, previous deep venous thrombosis, age over 40, recent surgery or trauma, gravidity, puerperium, oestrogen containing pills, varicosity, chronic heart disease, obesity, fever, diarrhoea, vomiting, smoking). No patient related factors were found in some cases. To reduce the hazards air travellers are rightly concerned to know the level of the risk and the airlines should be responsible for this information. People should discuss with their physician what prophlylactic measures should be taken, such as compression stockings or low molecular weight heparin. Not only flight but car, bus and train travellers are also at risk of developing venous thromboembolism. Long haul travel alone is a separate risk factor for venous thromboembolism.

  4. [Traveling with immunosuppression].

    Science.gov (United States)

    Birkenfeld, G

    2014-03-01

    The rapidly increasing number of patients with immunosuppression is followed by their expectation to lead-as much as possible-a "normal" life, including long-distance travel. The advice and preventive measures for diseases associated with travelling depend overall on the mode of the patient's immunosuppression. This report explains the individual preventive possibilities, limits and risks for travellers with asplenia, common variable immunodeficiency, chronic inflammatory bowel and rheumatic diseases, HIV, as well as for patients having undergone solid organ or bone marrow transplantation or chemotherapy.

  5. Malaria and Travelers

    Science.gov (United States)

    ... a CDC Malaria Branch clinician. malaria@cdc.gov Malaria and Travelers Recommend on Facebook Tweet Share Compartir ... may be at risk for infection. Determine if malaria transmission occurs at the destinations Obtain a detailed ...

  6. Carlson Wagonlit Travel

    CERN Multimedia

    Carlson Wagonlit Travel

    2005-01-01

    Dear customers, On 3 January we informed you that the airlines had decided to cease paying commission to travel agencies in Switzerland. This measure has since been progressively introduced, with rare exceptions. Consequently, in agreement with CERN, we are obliged to apply new transaction fees for private travel, with immediate effect. Carlson Wagonlit Travel (CWT) offers: A personalized, professional and competent consultancy service To seek the most economical and best solution adapted to your needs Neutrality in comparing prices and benefits Additional information concerning e.g. visa regulations, insurance, vaccinations, etc. Support in the event of problems We draw your attention to the fact that, in spite of the increase, these prices remain very competitive on today's market. Thank you for your trust and understanding. Yours truly, Carlson Wagonlit Travel CERN agency

  7. Travelers' Health: Cryptosporidiosis

    Science.gov (United States)

    ... cryptosporidiosis was associated with travel to Asia, particularly India, and Latin America. Another study found a 6. ... 22. Lalonde LF, Gajadhar AA. Effect of storage media, temperature, and time on preservation of Cryptosporidium parvum ...

  8. Travelers' Health: Rabies

    Science.gov (United States)

    ... from rabies in a UK traveller returning from India. Euro Surveill. 2005 Jul;10(30):E050728 5. ... Follow CDC Email Recommend Tweet Post RSS CDC Media Listen Watch YouTube About CDC Employment Newsroom Training/ ...

  9. Travel Inside the Ear

    Medline Plus

    Full Text Available ... Info » Hearing, Ear Infections, and Deafness Travel Inside the Ear Video When sound waves reach your ear, ... heard a soft sound or a loud sound. The sound passes through the outer ear and is ...

  10. Travel Inside the Ear

    Medline Plus

    Full Text Available ... stirrup. These are the smallest bones in your body. Together they are smaller than an orange seed. It then travels into the inner ear, which ... organizations Related Topics ...

  11. Traveling-wave photodetector

    Science.gov (United States)

    Hietala, Vincent M.; Vawter, Gregory A.

    1993-01-01

    The traveling-wave photodetector of the present invention combines an absorptive optical waveguide and an electrical transmission line, in which optical absorption in the waveguide results in a photocurrent at the electrodes of the electrical transmission line. The optical waveguide and electrical transmission line of the electrically distributed traveling-wave photodetector are designed to achieve matched velocities between the light in the optical waveguide and electrical signal generated on the transmission line. This velocity synchronization provides the traveling-wave photodetector with a large electrical bandwidth and a high quantum efficiency, because of the effective extended volume for optical absorption. The traveling-wave photodetector also provides large power dissipation, because of its large physical size.

  12. Travelers' Health: Diphtheria

    Science.gov (United States)

    ... Traveler Registration During Trip After Your Trip CDC-TV Videos Resources For Clinicians In-Clinic Quick Links ... toxoid vaccine before departure. After a childhood primary series and a booster dose during adolescence, routine booster ...

  13. Travelling or not?

    DEFF Research Database (Denmark)

    Helles, Rasmus; Lai, Signe Sophus

    2017-01-01

    The article presents a quantitative content analysis (Krippendorff, 2013) of the first episode of the 32 Danish drama series produced between 2005 and 2014. A number of these have experienced unprecedented, international success, with series such as Borgen (2010-13) and The Killing (2007......-12) travelling to multiple countries on several continents. The article shows that there are systematic differences in terms of formal characteristics, themes, and characters’ communicative style between the series that travel and the series that do not. Especially, the analysis finds that the presence of strong...... female lead characters is systematically linked to the positive travel patterns of the series, and that this cuts across different genres of series. The analysis also finds that series, which have explicitly low production values and simple narrative structure, systematically travels poorer....

  14. Travelers' Health: Leishmaniasis, Cutaneous

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... noise, they are small (approximately one-third the size of mosquitoes), and their bites might not be ...

  15. Travelers' Health: Rabies

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... weight may be small in relation to the size and number of wounds. RIG is difficult to ...

  16. Air Travel Health Tips

    Science.gov (United States)

    ... healthy snacks, like fresh or dried fruit, veggies, trail mix, or granola bars.Other helpful carry-on ... phone number with you in case of an emergency. If you have a severe food allergy, travel ...

  17. Travelers' Health: Leishmaniasis, Cutaneous

    Science.gov (United States)

    ... Climates Humanitarian Aid Workers Humanitarian Aid Workers in Ecuador Insurance International Adoption Jet Lag Last-Minute Travel ... military personnel, construction workers, and people who do research outdoors at night or twilight. However, even short- ...

  18. Travel patterns in China.

    Directory of Open Access Journals (Sweden)

    Tini Garske

    Full Text Available The spread of infectious disease epidemics is mediated by human travel. Yet human mobility patterns vary substantially between countries and regions. Quantifying the frequency of travel and length of journeys in well-defined population is therefore critical for predicting the likely speed and pattern of spread of emerging infectious diseases, such as a new influenza pandemic. Here we present the results of a large population survey undertaken in 2007 in two areas of China: Shenzhen city in Guangdong province, and Huangshan city in Anhui province. In each area, 10,000 randomly selected individuals were interviewed, and data on regular and occasional journeys collected. Travel behaviour was examined as a function of age, sex, economic status and home location. Women and children were generally found to travel shorter distances than men. Travel patterns in the economically developed Shenzhen region are shown to resemble those in developed and economically advanced middle income countries with a significant fraction of the population commuting over distances in excess of 50 km. Conversely, in the less developed rural region of Anhui, travel was much more local, with very few journeys over 30 km. Travel patterns in both populations were well-fitted by a gravity model with a lognormal kernel function. The results provide the first quantitative information on human travel patterns in modern China, and suggest that a pandemic emerging in a less developed area of rural China might spread geographically sufficiently slowly for containment to be feasible, while spatial spread in the more economically developed areas might be expected to be much more rapid, making containment more difficult.

  19. Why They Travel Alone?

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    "WHY Chinese Women Travel Alone" was the theme of a special edition of "Truth Talk" a popular talk show on China Central Television (CCTV), which focused on a few middle-aged women from different cultural backgrounds, social classes, and various educational backgrounds who had all branched out on their own for one reason or another. Each woman spoke of her experiences and feelings while travelling alone. They were all

  20. Freedom of Movement (Common Travel Area) (Travel Documentation) Bill 2014

    DEFF Research Database (Denmark)

    Butler, Graham; Hunt, Brian; Flanagan, Terence

    2014-01-01

    Private Members' Bill (legislation) introduced in Dáil Éireann (House of Deputies), Houses of the Oireachtas (Irish Parliament). An Act to reinforce the Common Travel Area by providing for passport-free travel for persons who are entitled to travel within the Common Travel Area without a passport...

  1. Freedom of Movement (Common Travel Area) (Travel Documentation) Bill 2014

    DEFF Research Database (Denmark)

    Butler, Graham; Hunt, Brian; Flanagan, Terence

    2014-01-01

    Private Members' Bill (legislation) introduced in Dáil Éireann (House of Deputies), Houses of the Oireachtas (Irish Parliament). An Act to reinforce the Common Travel Area by providing for passport-free travel for persons who are entitled to travel within the Common Travel Area without a passport...

  2. [Vaccination for international travelers].

    Science.gov (United States)

    Arrazola, M Pilar; Serrano, Almudena; López-Vélez, Rogelio

    2016-05-01

    Traveler's vaccination is one of the key strategies for the prevention of infectious diseases during international travel. The risk of acquiring an infectious disease is determined in each case by the characteristics of the traveler and the travel, so the pre-departure medical advice of the traveler must be individualized. The World Health Organization classifies travelerś vaccines into three groups. - Vaccines for routine use in national immunization programs: Haemophilus influenzae type b, hepatitis B, polio, measles-mumps-rubella, tetanus-diphtheria-whooping a cough, and chickenpox. - Vaccinations required by law in certain countries before to enter them: yellow fever, meningococcal disease and poliomyelitis. - Vaccines recommended depending on the circumstances: cholera, japanese encephalitis, tick-borne encephalitis, meningococcal disease, typhoid fever, influenza, hepatitis A, hepatitis B, rabies and BCG. This review is intended to introduce the reader to the field of international vaccination. Copyright © 2016 Elsevier España, S.L.U. y Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica. All rights reserved.

  3. Travels in Architectural History

    Directory of Open Access Journals (Sweden)

    Davide Deriu

    2016-11-01

    Full Text Available Travel is a powerful force in shaping the perception of the modern world and plays an ever-growing role within architectural and urban cultures. Inextricably linked to political and ideological issues, travel redefines places and landscapes through new transport infrastructures and buildings. Architecture, in turn, is reconstructed through visual and textual narratives produced by scores of modern travellers — including writers and artists along with architects themselves. In the age of the camera, travel is bound up with new kinds of imaginaries; private records and recollections often mingle with official, stereotyped views, as the value of architectural heritage increasingly rests on the mechanical reproduction of its images. Whilst students often learn about architectural history through image collections, the place of the journey in the formation of the architect itself shifts. No longer a lone and passionate antiquarian or an itinerant designer, the modern architect eagerly hops on buses, trains, and planes in pursuit of personal as well as professional interests. Increasingly built on a presumption of mobility, architectural culture integrates travel into cultural debates and design experiments. By addressing such issues from a variety of perspectives, this collection, a special 'Architectural Histories' issue on travel, prompts us to rethink the mobile conditions in which architecture has historically been produced and received.

  4. Adapting the traveling salesman problem to an adiabatic quantum computer

    Science.gov (United States)

    Warren, Richard H.

    2013-04-01

    We show how to guide a quantum computer to select an optimal tour for the traveling salesman. This is significant because it opens a rapid solution method for the wide range of applications of the traveling salesman problem, which include vehicle routing, job sequencing and data clustering.

  5. Online Learning Solutions for Freeway Travel Time Prediction

    NARCIS (Netherlands)

    Van Lint, J.W.C.

    2008-01-01

    Providing travel time information to travelers on available route alternatives in traffic networks is widely believed to yield positive effects on individual drive behavior and (route/departure time) choice behavior, as well as on collective traffic operations in terms of, for example, overall time

  6. Online Learning Solutions for Freeway Travel Time Prediction

    NARCIS (Netherlands)

    Van Lint, J.W.C.

    2008-01-01

    Providing travel time information to travelers on available route alternatives in traffic networks is widely believed to yield positive effects on individual drive behavior and (route/departure time) choice behavior, as well as on collective traffic operations in terms of, for example, overall time

  7. From Pericles to Plato – from democratic political praxis to totalitarian political philosophy

    Directory of Open Access Journals (Sweden)

    Øjvind Larsen

    2012-03-01

    Full Text Available Plato is normally taken as one of the founders of Western political philosophy, not at least with his Republic. Here, he constructs a hierarchy of forms of governments, beginning with aristocracy at the top as a critical standard for the other forms of governments, and proceeding through timocracy and oligarchy to democracy and tyranny at the bottom. Following Karl Popper, the paper argues that Plato’s is a totalitarian philosophy that emphasizes the similarities between democracy and tyranny, which it considers to be the two worst forms of government. Plato’s denigration of democracy has dominated the tradition of political philosophy until recent times. This paper, however, shows that political philosophy in fact originates in democracy, especially as developed by the sophists and that philosophy is only a form of sophism with a similar origin in ancient Greek democracy. A discussion of Pericles’ funeral oration is used to show that Pericles presented a democratic political philosophy that can serve as a counterpoint to Plato’s political philosophy in the Republic.

  8. Plato's Concept of Justice%论柏拉图的正义观

    Institute of Scientific and Technical Information of China (English)

    刘欣如

    2015-01-01

    本文以柏拉图的作品《申辩》、《斐多》、《理想国》为切入点,论述了正义是在应在的位置上做应做之事、正义的本质是灵魂的一种属性以及正义的产生,并通过作品提供的背景和对话讨论了正义之人和不义之人的区别、正义的种类、正义行为的动机、正义的各种不同状态等问题.%In this paper, the works of Plato,"defense","Phaedo","Utopia"as the starting point, discusses the justice should be done is to do things in a position to be in, the nature of justice is an attribute of the soul, and justice generation, background and dialogue and through providing discussed works of justice and the unrighteous man of distinction, just the kind of moti-vation act of justice, justice of various states and other issues.

  9. Risk assessment in travel medicine.

    Science.gov (United States)

    Leggat, Peter A

    2006-01-01

    Risk assessment is an integral part of pre-travel and post- assessment. Risk assessment largely determines what health and safety advice and interventions are given within the relevant prevailing travel health guidelines. Risk assessment needs time and depends on information, including that given by the traveller. Risk assessment also needs to be documented. Risk assessment of the traveller preferably starts before they enter the consulting room, where travellers may complete a pre-travel health questionnaire. Armed with this information, risk assessment may be assisted by access to computerised travel health databases and the published literature. Experience of travel to the destination may also assist in risk assessment and the tour operator, overseas employer or agency, the traveller or even the travel health advisers themselves may provide this information.

  10. Traveling technologies and transformations in health care

    DEFF Research Database (Denmark)

    Nielsen, Annegrete Juul

    light, its chances of influencing those it would like bear down on is bound to be minimal. For a health care program to have an effect it must be able to travel or move between practices. Some health care programs successfully accomplish this task. They come to be widely adopted, apparently having...... global relevance, as for example the Chronic Disease Self-Management Program, which has been adopted by countries as diverse as Japan, Australia and Denmark. But how does this happen and which effects does traveling have on a health care program and its place of arrival? This question is the starting...

  11. [Counsel for traveling children].

    Science.gov (United States)

    Sorge, F; Gendrel, D

    2013-01-01

    Consultation of child traveler has two main objectives: to assess of health risk related to the child's health status and history and also the risk related to travel environment; to counsel and prescribe preventive measure to reduce these travel health risks. The evaluation is based on physical examination and a detailed interview including personal history and information regarding the regions of proposed travel. Up to date knowledge of the epidemiology of visited sites, preventive measures and presumptive treatment is required. Essential health recommendations include, in case of exposure, prevention of malaria, arthropod borned diseases and vaccine preventable diseases. For all destinations advice regarding prevention of diarrhea, accident risks and aggravation of preexisting chronic diseases is needed. Universal primary prevention counselling is valuable for all travellers regardless of their age. In the case of children, special attention must be given to food and water hygiene, sun and heat exposure, swimming risks and transports security measures. Evaluation of risk and health education take time and often several visits are needed to complete the immunization schedule before departure.

  12. Lost in follow-up rates in TRACER, ATLAS ACS 2, TRITON and TRA 2P trials: challenging PLATO mortality rates.

    Science.gov (United States)

    DiNicolantonio, James J; Can, Mehmet Mustafa; Serebruany, Victor L

    2013-04-15

    Extreme rates of vascular and all-cause mortality especially in the clopidogrel arm of the Platelet Inhibition and Patient Outcomes (PLATO) non-USA cohort raise concerns of data integrity, and call for independent verification of vital records in the national death registries. Four recent acute coronary syndrome (ACS) trials: Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRACER), Anti-Xa therapy to lower cardiovascular events in addition to standard therapy in subjects with acute coronary syndrome (ATLAS-ACS 2), Trial to Assess Improvement in Therapeutic Outcomes by Optimizing Platelet Inhibition with Prasugrel (TRITON), and the Thrombin Receptor Antagonist in Secondary Prevention of Atherothrombotic Ischemic Events (TRA 2P), provide a valuable opportunity to match lost in follow-up (LIFU) with mortality rates among similar ACS studies. To compare the LIFU from PLATO, TRACER, ATLAS-ACS 2, TRITON-TIMI 38 and TRA 2P trials. The disturbingly high (8.9%-14.7%) LIFU in PLATO was no match to LIFU in TRACER (0.1%), ATLAS ACS 2 (0.3%), TRITON (0.1%) and TRA 2P (0.1%). In fact, such an astronomical (49-147 fold higher) PLATO LIFU rate should result in less mortality compared to the other ACS trials since no event can be reported or adjudicated if the patient has been lost. Adjusting LIFU rate revealed that vascular (5.55%) and all cause (6.05%) mortality in PLATO was even more disparate than in TRACER (3.2% and 4.9%), ATLAS-ACS 2 (4.1% and 4.5%), TRITON-TIMI 38 (2.4% and 3.2%) and TRA 2P (3.0% and 5.3%) control arms, respectfully. Moreover, the incomplete CV follow-up in the ATLAS ACS 2 trial was later revealed to be around 12%, which lead to the rejection of rivaroxaban for the treatment of ACS. PLATO's LIFU rate was just as high, if not higher, than seen in ATLAS ACS 2. The chance to die in PLATO far exceeds the mortality risks observed in the clopidogrel arms of four recent ACS trials, which becomes especially evident after

  13. [Pregnancy and traveling].

    Science.gov (United States)

    Walentiny, C

    2009-03-01

    The second trimester is the safest time for travelling, because the pregnant woman feels generally most at ease and the risk of spontaneous abortion and pre-term labour is very low. Possible risks must be discussed with the obstetrician before travelling. If the pregnancy is uncomplicated most airlines allow flying up to the 36th (domestic flights) and 35th (international flights) week of gestation. Unless the fetal oxygen supply is already impaired at ground level due to an underlying disease, flying does not pose a risk of fetal hypoxia. Radiation exposure during a long distant flight is low compared to the average annual exposure dosage, but the risk of thrombosis is increased. Altitudes up to 2,500 m pose no problem. Sufficient time to acclimatize must be taken when travelling to high altitudes and exercise kept to a minimum. Scuba diving is contraindicated. Since only a few drugs are completely safe during pregnancy a thorough risk/benefit evaluation is mandatory. Treatment of infections can be considerably complicated, but any necessary treatment should not be withheld because of the fear of potential fetal injury. Good knowledge of local medical resources is essential before travelling. Several personal protective measures minimize the risk of infection: food and water precautions, protection from insect bites and avoidance of crowds, unsafe sex and, if need be, freshwater. Many vaccinations are recommended for travellers. However, live vaccines are contraindicated in pregnant women because of theoretical considerations. Exceptionally a yellow fever vaccination may be given after the first trimester. Killed, inactivated or polysaccharide vaccines can be given after the first trimester after a thorough risk/benefit evaluation. Because of the potentially devastating effect of malaria to the mother and the child, travelling to endemic malaria regions should be avoided. If the risk of infection is high chemoprophylaxis with mefloquine is indicated. In low

  14. Culture shock and travelers.

    Science.gov (United States)

    Stewart, L; Leggat, P A

    1998-06-01

    As travel has become easier and more affordable, the number of people traveling has risen sharply. People travel for many and varied reasons, from the business person on an overseas assignment to backpackers seeking new and exotic destinations. Others may take up residence in different regions, states or countries for family, business or political reasons. Other people are fleeing religious or political persecution. Wherever they go and for whatever reason they go, people take their culture with them. Culture, like language, is acquired innately in early childhood and is then reinforced through formal and complex informal social education into adulthood. Culture provides a framework for interpersonal and social interactions. Therefore, the contact with a new culture is often not the exciting or pleasurable experience anticipated. When immersed in a different culture, people no longer know how to act when faced with disparate value systems. Contact with the unfamiliar culture can lead to anxiety, stress, mental illness and, in extreme cases, physical illness and suicide. "Culture shock" is a term coined by the anthropologist Oberg. It is the shock of the new. It implies that the experience of the new culture is an unpleasant surprise or shock, partly because it is unexpected and partly because it can lead to a negative evaluation of one's own culture. It is also known as cross-cultural adjustment, being that period of anxiety and confusion experienced when entering a new culture. It affects people intellectually, emotionally, behaviorally and physically and is characterized by symptoms of psychological distress. Culture shock affects both adults and children. In travelers or workers who have prolonged sojourns in foreign countries, culture shock may occur not only as they enter the new culture, but also may occur on their return to their original culture. Children may also experience readjustment problems after returning from leading sheltered lives in expatriate

  15. Time a traveler's guide

    CERN Document Server

    Pickover, Clifford A

    1998-01-01

    ""Bucky Fuller thought big,"" Wired magazine recently noted, ""Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both."" In his newest book, Cliff Pickover outdoes even himself, probing a mystery that has baffled mystics, philosophers, and scientists throughout history--What is the nature of time? In Time: A Traveler's Guide, Pickover takes readers to the forefront of science as he illuminates the most mysterious phenomenon in the universe--time itself. Is time travel possible? Is time real? Does it flow in one direction only? Does it have a beginning and an end? What is eternity? P

  16. Malaria prevention in travelers.

    Science.gov (United States)

    Genton, Blaise; D'Acremont, Valérie

    2012-09-01

    A common approach to malaria prevention is to follow the "A, B, C, D" rule: Awareness of risk, Bite avoidance, Compliance with chemoprophylaxis, and prompt Diagnosis in case of fever. The risk of acquiring malaria depends on the length and intensity of exposure; the risk of developing severe disease is primarily determined by the health status of the traveler. These parameters need to be assessed before recommending chemoprophylaxis and/or stand-by emergency treatment. This review discusses the different strategies and drug options available for the prevention of malaria during and post travel.

  17. Intergalactic Travel Bureau

    Science.gov (United States)

    Koski, Olivia; Rosin, Mark; Guerilla Science Team

    2014-03-01

    The Intergalactic Travel Bureau is an interactive theater outreach experience that engages the public in the incredible possibilities of space tourism. The Bureau is staffed by professional actors, who play the role of space travel agents, and professional astrophysicists, who play the role of resident scientists. Members of the public of all ages were invited to visit with bureau staff to plan the vacation of their dreams-to space. We describe the project's successful nine day run in New York in August 2013. Funded by the American Physical Society Public Outreach and Informing the Public Grants.

  18. SMART TRAVELLING WITH RADIO FREQUENCY IDENTIFICATION

    Directory of Open Access Journals (Sweden)

    Zainab Rasheed Fahad Mirza

    2013-01-01

    Full Text Available Radio Frequency Identification (RFID technology is being widely used now-a-days and is becoming more popular with every passing day. There are varied applications of this technology in various fields such as industry, communication, travel and transportation. Roads, rail ways, air traffic and container vessel shipping all share underlying abstractions of transportation nets with hubs. This study is concerned with applications of RFID technology with Cloud computing, innovation in the field of travelling and its applications for different modes of transportation at Harbors, airports, train stations, road intersections providing security, coordination, to the users. Combined with other technologies, RFID technology is being used for modern airports baggage system, for railroad car identification, in container transportation systems, for fuel supply control of vehicles, in traffic management system and in travelling information system.

  19. Travel health. Part 1: preparing the tropical traveller.

    Science.gov (United States)

    Carroll, Bernadette; Daniel, Amanda; Behrens, Ron H

    The health threats of modern day travel change as population, wealth and tourism increase across the world. A series of three articles have been written to describe the spectrum of health issues associated with travel. Pre-travel health advice has become more focused on risk assessment and educating the traveller about infectious disease and the more frequent non-infectious hazards associated with travel, while ensuring they are not unnecessarily exposed to injury from vaccines and drugs. In part one, the role of the health advisor and the needs of the traveller are examined. The importance of risk assessment during a consultation is described and factors that influence recommendations and prescribing are explored. As most travel-associated morbidity and mortality is non-vaccine preventable, the focus of the pre-travel consultation should be on educating the traveller and influencing behaviour change. The second article in this series deals with the highest risk group of travellers--residents who visit friends and relatives. It highlights their specific problems and special needs and how to influence their risk of disease by addressing their health beliefs and their cultural dimension of risk. The third article explores the common, and not so common, clinical problems found in returned travellers. Nurses have to deal with a large range of clinical problems and diagnostic dilemmas when attending to the returned traveller. The review provides a perspective on the frequency and severity of problems and how nurses should manage travel associated disease.

  20. Dosimetric evaluation of PLATO and Oncentra treatment planning systems for High Dose Rate (HDR) brachytherapy gynecological treatments

    Science.gov (United States)

    Singh, Hardev; Herman, Tania De La Fuente; Showalter, Barry; Thompson, Spencer J.; Syzek, Elizabeth J.; Herman, Terence; Ahmad, Salahuddin

    2012-10-01

    This study compares the dosimetric differences in HDR brachytherapy treatment plans calculated with Nucletron's PLATO and Oncentra MasterPlan treatment planning systems (TPS). Ten patients (1 T1b, 1 T2a, 6 T2b, 2 T4) having cervical carcinoma, median age of 43.5 years (range, 34-79 years) treated with tandem & ring applicator in our institution were selected retrospectively for this study. For both Plato and Oncentra TPS, the same orthogonal films anterior-posterior (AP) and lateral were used to manually draw the prescription and anatomical points using definitions from the Manchester system and recommendations from the ICRU report 38. Data input for PLATO was done using a digitizer and Epson Expression 10000XL scanner was used for Oncentra where the points were selected on the images in the screen. The prescription doses for these patients were 30 Gy to points right A (RA) and left A (LA) delivered in 5 fractions with Ir-192 HDR source. Two arrangements: one dwell position and two dwell positions on the tandem were used for dose calculation. The doses to the patient points right B (RB) and left B (LB), and to the organs at risk (OAR), bladder and rectum for each patient were calculated. The mean dose and the mean percentage difference in dose calculated by the two treatment planning systems were compared. Paired t-tests were used for statistical analysis. No significant differences in mean RB, LB, bladder and rectum doses were found with p-values > 0.14. The mean percent difference of doses in RB, LB, bladder and rectum are found to be less than 2.2%, 1.8%, 1.3% and 2.2%, respectively. Dose calculations based on the two different treatment planning systems were found to be consistent and the treatment plans can be made with either system in our department without any concern.

  1. Dosimetric evaluation of PLATO and Oncentra treatment planning systems for High Dose Rate (HDR) brachytherapy gynecological treatments

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Hardev; De La Fuente Herman, Tania; Showalter, Barry; Thompson, Spencer J.; Syzek, Elizabeth J.; Herman, Terence; Ahmad, Salahuddin [Department of Radiation Oncology, Peggy and Charles Stephenson Oklahoma Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104 (United States)

    2012-10-23

    This study compares the dosimetric differences in HDR brachytherapy treatment plans calculated with Nucletron's PLATO and Oncentra MasterPlan treatment planning systems (TPS). Ten patients (1 T1b, 1 T2a, 6 T2b, 2 T4) having cervical carcinoma, median age of 43.5 years (range, 34-79 years) treated with tandem and ring applicator in our institution were selected retrospectively for this study. For both Plato and Oncentra TPS, the same orthogonal films anterior-posterior (AP) and lateral were used to manually draw the prescription and anatomical points using definitions from the Manchester system and recommendations from the ICRU report 38. Data input for PLATO was done using a digitizer and Epson Expression 10000XL scanner was used for Oncentra where the points were selected on the images in the screen. The prescription doses for these patients were 30 Gy to points right A (RA) and left A (LA) delivered in 5 fractions with Ir-192 HDR source. Two arrangements: one dwell position and two dwell positions on the tandem were used for dose calculation. The doses to the patient points right B (RB) and left B (LB), and to the organs at risk (OAR), bladder and rectum for each patient were calculated. The mean dose and the mean percentage difference in dose calculated by the two treatment planning systems were compared. Paired t-tests were used for statistical analysis. No significant differences in mean RB, LB, bladder and rectum doses were found with p-values > 0.14. The mean percent difference of doses in RB, LB, bladder and rectum are found to be less than 2.2%, 1.8%, 1.3% and 2.2%, respectively. Dose calculations based on the two different treatment planning systems were found to be consistent and the treatment plans can be made with either system in our department without any concern.

  2. Travel Inside the Ear

    Medline Plus

    Full Text Available ... Search form Search A–Z Index Español Menu Home Health Info Hearing, Ear Infections, and Deafness Balance ... Committees Contact Us Get Involved You are here Home » Health Info » Hearing, Ear Infections, and Deafness Travel ...

  3. Flu and Holiday Travel

    Centers for Disease Control (CDC) Podcasts

    2010-12-13

    This podcast explains the ways people can stay healthy and avoid the flu when traveling this winter.  Created: 12/13/2010 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 12/13/2010.

  4. Gulliver's Travels. [Lesson Plan].

    Science.gov (United States)

    Rooks, Kirsten; McLean, Mary

    Based on Jonathan Swift's novel "Gulliver's Travels," this lesson plan presents activities designed to help students understand that Swift comments on undesirable outcomes of advances in science; and other authors have also warned against abuse of science. The main activity of the lesson involves students developing a poster illustrating views of…

  5. Traveling in France.

    Science.gov (United States)

    Philyaw, Henry; And Others

    This minicourse guide for teachers of French is intended to help motivate and prepare students for travel in France. Activities are outlined in eleven related areas, including (1) planning for the trip, (2) currency, (3) going through customs, (4) tipping, (5) shopping, (6) guided tours, (7) touring on your own, (8) social life and entertainment,…

  6. Beijing Time Travel

    Institute of Scientific and Technical Information of China (English)

    ROBERT T.TUOHEY

    2010-01-01

    @@ Dally travel within Beijing need not be anymore troublesome than going about any major metropolis.Simply,certain basic facts need to be kept in mind,and ordinary precautions taken.Essentially,it's the same situation as midtown Manhattan or downtown Tokyo,except everyone's speaking Chinese.

  7. Beijing Time Travel

    Institute of Scientific and Technical Information of China (English)

    ROBERT; T.TUOHEY

    2010-01-01

    Daily travel within Beijing need not be anymore troublesome than going about any major metropolis.Simply,certain basic facts need to be kept in mind,and ordinary precautions taken.Essentially,it’s the same situation as midtown Manhattan or downtown Tokyo,except everyone’s speaking Chinese.

  8. Travelers' Health: Hepatitis A

    Science.gov (United States)

    ... total anti-HAV result and a negative IgM anti-HAV result indicate past infection or vaccination and immunity. The presence of serum IgM anti- ... the risk for adverse effects, screening for total anti-HAV before travel can be ... Postvaccination testing for serologic response is not indicated. ...

  9. Zero Energry Travel

    CERN Document Server

    Ahmad, Othman; Chekima, Ali

    2011-01-01

    It is fundamentally possible to travel with zero energy based on Newton Laws of Motion. According to the first law of motion, a body will continue to travel for infinite distance unless it is acted upon by another force. For a body in motion, the force which stops perpetual motion is friction. However, there are many circumstances that friction is zero, for example in space, where there is vacuum. On earth, gravity makes objects to be in constant contact with each other generating friction but technology exists to separate them in the air using powerful magnetic forces. At low speeds, the friction caused by air is minimal but we can create vacuum even on land for high speed travel. Another condition for travelling is for it to stop at its destination. On land, we can recover the kinetic energy back into electrical energy using brushless permanent magnet generators. These generators can also convert electric energy into kinetic energy in order to provide motion. This article reviews technologies that will allo...

  10. Ancient philosophical ideas of the soul (Plato-Aristotelian tradition and Stoicism as a source of Patristic Thought

    Directory of Open Access Journals (Sweden)

    Zaitsev Cornelius

    2014-10-01

    Full Text Available The article discusses the ancient idea of the soul that in the patristic era has been enriched by the perception of the methodology of ancient philosophy. Greek and Roman thinkers considered some properties of the soul, its immortality, revealed its “levels and strata” (Plato, Aristotle, expressed first guesses about the nature of sinful passions (the Stoics. But some aspects still remained unresolved so far. This is the issue of materiality or immateriality, of the soul, which "raised" in the Russian Empire in the 19th century (the dispute saints Theophan the Recluse and Ignatius Brianchaninov and remains relevant today.

  11. Toward a Poeticognosis: Re-reading Plato's The Republic via Wallace Stevens' "An Ordinary Evening in New Haven"

    Directory of Open Access Journals (Sweden)

    Dan Disney

    2008-01-01

    Full Text Available This article is a language-based re-reading of Plato's exile of the poets via Wallace Stevens' poem-manifesto, "An Ordinary Evening in New Haven." I examine how philosophy and poetry use language differently in order to deconstruct an origin of the speech-acts -- wonder -- that I then identify as a phenomenological difference between philosophers and poets. I contend that the thinking-into-language of philosophers is based in theoria, comprehension, and a resulting closure of wonder. I contrast this with the processes of poets, who I show to be moving thought into language via gnosis, apprehension, and a phenomenology opening onto inexhaustible wonder.

  12. Love and/in psychoanalysis: a commentary on Lacan's reading of Plato's Symposium in Seminar VIII: Transference.

    Science.gov (United States)

    Fink, Bruce

    2015-02-01

    What is love and what part does it play in psychoanalysis? Where are the analyst and the analysand situated in relation to the roles defined as those of the "lover" and the "beloved"? Jacques Lacan explores these and other questions in his soon-to-be-published Seminar VIII: Transference by providing an extensive commentary on Plato's most famous dialogue on love, the Symposium. This paper outlines some of the major points about love that grow out of Lacan's reading of the dialogue and examines their relevance to the analytic setting. Can the analyst be characterized as a sort of modern-day Socrates?

  13. Valuation of Travel Time and TravelIer Information

    NARCIS (Netherlands)

    Rietveld, Piet

    2003-01-01

    The value of travel time plays an important role in cost benefit analysis of infrastructureprojects. However, the issue of uncertainty on travel times and the implications this has forestimations of travel time values has received much less attention in the literature. In thispaper we compare

  14. Valuation of Travel Time and TravelIer Information

    NARCIS (Netherlands)

    Rietveld, Piet

    2003-01-01

    The value of travel time plays an important role in cost benefit analysis of infrastructureprojects. However, the issue of uncertainty on travel times and the implications this has forestimations of travel time values has received much less attention in the literature. In thispaper we compare variou

  15. A display model for the TOU of PLATO: just a cool toy or a benchmark of opportunities?

    Science.gov (United States)

    Dima, M.; Greggio, D.; Bergomi, M.; Biondi, F.; Farinato, J.; Farisato, G.; Magrin, D.; Lessio, L.; Marafatto, L.; Munari, M.; Pagano, I.; Ragazzoni, R.; Viotto, V.; Piazza, D.

    2016-07-01

    We produced a "toy-model" of one Telescope Optical Unit of PLATO, the Medium sized mission selected by ESA to fly in 2024. This is a six lenses dioptric very wide field camera with a window in front to take care of radiation impact on the first lens whose optical glass cannot be replaced with a radiation hardened one. The main aim of this project is just to produce a "cool" model for display purposes, in which one can "explore" the details of the inside through some openings in the tube, in order to visually inspect some of the fine details of the opto-mechanics. While its didactic and advertising role is out of doubt, during its construction we realized that some interesting outcome can be of some relevance for the project itself and that some findings could be useful, in order to assess the ability of producing with the same technology some (of course of much more modest quality) optical systems. In this context, we immediately dropped the option of producing the lenses with opaque material painted with a color resembling a refractive material (like blue for instance) and decided to actually produce them with transparent plastic. Furthermore the surfaces are then finely polished in order to give them basic optical properties. Such an optical system has only very coarsely the converging properties of the original nominal design for a number of reasons: the refractive indexes are not the nominal ones, the quality of the surfaces and their nominal values are only roughly, within a few percent, the targeted one, and the way the surfaces are built up makes them prone to some diffraction effects. However, the bulk of the lens and the surface roughness will give a large magnification of the scattering effects that will be experienced, at a much lower level, on the actual flight model. We investigated through propagation of a laser beam and by digital camera the main stray light modes that this toymodel offers. In other words, the model amplifies, to a large extent, the

  16. ¿Solamente platos? Cerámicas de barniz rojo en el depósito ibérico del Zacatín (Granada)

    OpenAIRE

    Sánchez Moreno, Amparo; Niveau de Villedary y Mariñas, Ana María; Adroher Auroux, Andrés María

    2015-01-01

    Se presenta un conjunto homogéneo de platos de barniz rojo indígena con un perfil muy particular y sin paralelos conocidos por el momento. Dicho conjunto formaba parte del depósito ritual hallado en la granadina calle del Zacatín, una fosa junto al río Darro que se rellenó con los resultantes de un festín sagrado posiblemente en relación con el propio río. En este trabajo planteamos que estos platos fueron fabricados ex profeso para el ritual que tuvo lugar fuera de las murallas de Iliberri e...

  17. Traveler's Health: Avoid Bug Bites

    Science.gov (United States)

    ... Blood Clots Bug Bites Business Travel Cold Climates Counterfeit Drugs Cruise Ship Travel Families with Children Fish ... insect repellents that contain at least 20% DEET (products include Cutter Backwoods and Off! Deep Woods) for ...

  18. Epidemic spreading by objective traveling

    Science.gov (United States)

    Tang, Ming; Liu, Zonghua; Li, Baowen

    2009-07-01

    A fundamental feature of agent traveling in social networks is that traveling is usually not a random walk but with a specific destination and goes through the shortest path from starting to destination. A serious consequence of the objective traveling is that it may result in a fast epidemic spreading, such as SARS etc. In this letter we present a reaction-traveling model to study how the objective traveling influences the epidemic spreading. We consider a random scale-free meta-population network with sub-population at each node. Through a SIS model we theoretically prove that near the threshold of epidemic outbreak, the objective traveling can significantly enhance the final infected population and the infected fraction at a node is proportional to its betweenness for the traveling agents and approximately proportional to its degree for the non-traveling agents. Numerical simulations have confirmed the theoretical predictions.

  19. 75 FR 43395 - Campaign Travel

    Science.gov (United States)

    2010-07-26

    ... Campaign Travel AGENCY: Federal Election Commission. ACTION: Announcement of effective date. SUMMARY: On... of the Honest Leadership and Open Government Act governing campaign travel on noncommercial aircraft.... SUPPLEMENTARY INFORMATION: On December 7, 2009, the Commission published final rules governing campaign...

  20. Knowledge Representation in Travelling Texts

    DEFF Research Database (Denmark)

    Mousten, Birthe; Locmele, Gunta

    2014-01-01

    Today, information travels fast. Texts travel, too. In a corporate context, the question is how to manage which knowledge elements should travel to a new language area or market and in which form? The decision to let knowledge elements travel or not travel highly depends on the limitation...... and the purpose of the text in a new context as well as on predefined parameters for text travel. For texts used in marketing and in technology, the question is whether culture-bound knowledge representation should be domesticated or kept as foreign elements, or should be mirrored or moulded—or should not travel...... at all! When should semantic and pragmatic elements in a text be replaced and by which other elements? The empirical basis of our work is marketing and technical texts in English, which travel into the Latvian and Danish markets, respectively....

  1. Bhavnagar Telescope: the most widely travelled telescope in the country

    CERN Document Server

    Rao, N Kameswara; Vagiswari, A

    2014-01-01

    In the last decade of the 19th century Maharaja Takhtasingji Observatory was built at Poona (1888-1912) under the supervision of K.D.Naegamavala, with the grant from Maharaja of Bhavnagar (from where the name Bhavnagar Telescope must have originated. The story of this telescope from its inception to the current status is traced. IIA Archives has been extensively used to resource information for this note.

  2. CARLSON WAGONLIT TRAVEL

    CERN Multimedia

    CARLSON WAGONLIT TRAVEL

    2004-01-01

    CARLSON WAGONLIT TRAVEL would like to remind you of the entry formalities applicable to those travelling to the United States. Nationals of Switzerland and of the following countries : Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxemburg, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden and the United Kingdom, entering the United States under the Visa Waiver Program (no visa requirement), must be in possession of an machine-readable passport that is valid for at least six months after the date of the return trip. Children, including infants, must have their own passport. An entry in the parents' passport is not sufficient. For entry into the United States, an e-ticket (fax or e-mail confirmation or passenger receipt) or a return ticket to the departure point or a ticket to a subsequent onward destination (valid for 90 days) must be presented together with the green ...

  3. The micro-fascism of Plato's good citizen: producing (dis)order through the construction of risk.

    Science.gov (United States)

    O'Byrne, Patrick; Holmes, Dave

    2007-04-01

    The human body has come to be seen as forever susceptible to both external and internal hazards, which in many circumstances require immediate, heroic, and expensive intervention. In response to this, there has been a shift from a treatment-based healthcare model to one of prevention wherein nurses play an integral role by identifying and assessing risks for individuals, communities, and populations. This paper uses Deborah Lupton's outline of the spectrum of risk and applies the theoretical works of Foucault and Plato to demonstrate the means by which nurses maintain social order by identifying and counselling risk takers. It also utilizes the work of Deleuze and Guattari to illustrate how Plato's framework for creating social order through the creation of the good citizen can be viewed as a micro-fascist system, which has been adopted wholeheartedly by preventative health professionals. The goal of this paper is to present an alternate understanding of risk to provide nurses and other healthcare professionals with a non-traditional appreciation of certain aspects of their practice as researchers and clinicians.

  4. Negação e diferença em Platão Negation and diference in Plato

    Directory of Open Access Journals (Sweden)

    Eliane Christina de Souza

    2010-01-01

    Full Text Available Platão, ao tratar da negação no diálogo Sofista, afirma que sempre que enunciamos o que não é, não enunciamos algo contrário ao que é, mas algo diferente. A negação significa cada parte da natureza da diferença em antítese ao que é. Tal tratamento da negação resulta da necessidade de resolver alguns problemas colocados pelo eleatismo. Propõe-se indicar esses problemas e examinar o tratamento que Platão dá ao não-ser como diferença.Plato, in dealing with negation in the dialogue Sophist, says that when we say what is not, we speak not of something that is the opposite of being, but of something different. Negation means each part of the nature of the difference in antithesis to what is. This treatment of negation results from the need to solve some problems posed by eleatism. It is proposed to indicate these problems and examine the treatment that Plato gives to non-being as difference.

  5. Comparative Study of Meanings and Status of Imagination in Mathnavi and Plato’s Ideas

    Directory of Open Access Journals (Sweden)

    sh alyari

    2013-02-01

    Full Text Available Describing and explaining the nature of imagination and its function with regard to human being and ontology has always been one of the preoccupations of philosophers and thinkers. Plato is the first philosopher who considered an epistemological status for imagination and, by dividing the world into the world of reason and world of senses, he ascribed the knowledge of imagination to the world of senses. In different parts of Mathnavi, Molavi, the great Muslim-Iranian mystic, has paid much attention to imagination, its types, its status in the Knowledge of Man (both physical and metaphysical affairs and its various influences on the body, soul and mental states of any individual. Thus, the present article aims to compare the concept of imagination in the view of the two thinkers. For reaching such aim, while using a descriptive-comparative method, first, the definitions of imagination in Mathnavi and Plato’s ideas are investigated and, then, the similarities and differences of the two views are shown. The conclusion is that their ideas are similar with regard to unreality and shadowiness of the world and phenomena, the relation between imitation and imagination, deficiency and restrictions of imagination for understanding the reality, whereas their ideas are different regarding the power of imagination, its epistemological status and the meaning and influence of it.

  6. Diversity does not travel!

    DEFF Research Database (Denmark)

    Lund, Rebecca; Tienari, Janne

    2013-01-01

    In this chapter we offer insights into the social construction of diversity in Finnish organizations and society. In Finnish organizations, gender is highlighted while other markers of diversity are blotted out. 'Non-Finns' become subject to cultural assimilation. The US-based concept of Diversity...... Management becomes adopted and adapted in particular ways. Standardized concepts of diversity and its management do not travel, rather they become translated locally. In organizational practice, globalization is slow and laborious....

  7. Malaria and Tropical Travel

    Centers for Disease Control (CDC) Podcasts

    2008-05-15

    Malaria is a serious mosquito-borne disease that can lead to death. This podcast discusses malaria risk when traveling to tropical areas, as well as how to protect yourself and your family from malaria infection.  Created: 5/15/2008 by National Center for Zoonotic, Vector-Borne, and Enteric Diseases (NCZVED).   Date Released: 5/29/2008.

  8. Aging and space travel

    Science.gov (United States)

    Mohler, S. R.

    1982-01-01

    The matter of aging and its relation to space vehicle crewmembers undertaking prolonged space missions is addressed. The capabilities of the older space traveler to recover from bone demineralization and muscle atrophy are discussed. Certain advantages of the older person are noted, for example, a greater tolerance of monotony and repetitious activities. Additional parameters are delineated including the cardiovascular system, the reproductive system, ionizing radiation, performance, and group dynamics.

  9. [Traveling with small children].

    Science.gov (United States)

    Olivier, C

    1997-01-01

    Traveling with children especially in the tropics requires special planning. Contraindications are rare but care providers should obtain information about medical and transfusional facilities at the destination. Children should receive all vaccinations required for international travel and for specific countries, taking into account age, location, duration of stay, and purpose of trip. A first aid kit should be packed containing a thermometer, bandages, antiseptic agents, a total sunscreen preparation, a mosquito net, sterile compresses, tablets for water disinfection, and indispensable medications (antimalarial agents, antipyretics, oral rehydration solutions, antiemetics, and eye wash). The main indication for chemoprophylaxis is malaria. Chloroquine is recommended for most locations but proguanil may be necessary in areas of resistance. Special attention must be paid to skin care in infants: maintaining cleanliness, avoiding cuts insofar as possible, and treating any wounds. Clothing must be carefully laundered and adequate to prevent overexposure to sunlight and insect bites. Insect bites must also be prevented by applying repellents, using mosquito nets, and wearing insecticide-treated garments. Handwashing by people who prepare meals and by the children before eating is important to prevent food poisoning. Breast feeding is advisable for infants. Thorough cooking of meats, rinsing of fresh produce, drinking of bottled beverages, and sterilization of water are also important food safety measures. These precautions are usually adequate to allow safe travel with children.

  10. Carlson Wagonlit Travel

    CERN Multimedia

    2006-01-01

    Carlson Wagonlit Travel wishes to remind you of the following conditions concerning travel to the USA. Passport conditions Since 26 October 2004, nationals of the countries covered by the US Visa Waiver Programme have been required to present a valid machine-readable passport when entering the United States. Failing this, they require a valid US non-immigrant visa in addition to their passport. Passports issued after 25 October 2005 must also bear a digital photograph. Passports issued after 25 October 2006 must contain biometric data to allow visa-free entry to the US. Advanced Passenger Information System (APIS) form Since 4 October 2005, all non-US citizens travelling to the USA have been required to complete the APIS form before departure and present it when they check in. This new procedure will certainly increase the time it takes to check in. We therefore advise passengers to present themselves at the respective check-in desk in good time. The APIS form can be downloaded from our homepage: w...

  11. When CERN travels abroad

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    For the first time the new CERN travelling exhibition has gone abroad. The venue is Torino, in Italy, where it is being shown at the Museum of Natural Science in the framework of the activities of the EuroScience Open Forum (ESOF 2010). Soon after the event, the exhibition will fly to Copenhagen. The CERN traveling exhibition was inaugurated in 2009. The new ‘Accelerating Science’ exhibition was inaugurated in 2009 as part of the celebrations to mark the 450th anniversary of the University of Geneva. “CERN’s travelling exhibition is an important tool for outreach in our Member states as it carries the main messages that constitute the backbone of the Laboratory’s education and communication policy”, explains Rolf Landua, head of the Education Group, which manages the exhibition. “The 2010 European Science Open Forum in Torino will gather a lot of experts and visitors from the general public who will be able to experience in an ...

  12. Customer's Perceptions and Intentions on Online Travel Service Delivery: An Empirical Study in China

    Science.gov (United States)

    Li, Hongxiu; Suomi, Reima

    With the wide adoption of e-commerce in travel and tourism industry, the Internet has become an important travel service delivery channel, and traditional travel agency has been under severe disintermediation threat. This paper reports on a survey conducted to explore the Chinese consumer's current usage of the Internet as the channel to search travel information and to book travel services. It also investigates customer's future intentions on using the Internet to book travel services. This paper aims to examine whether there are difference between different consumer segments in terms of gender and age, and to find the hypothesis of disintermediation or intermediation in travel industry. The results indicates that online travel service delivery has grown as a popular direct distribution channel in travel industry, but more of the customers still turn to the traditional travel agencies, which support both the disintermediation and intermediation in travel industry. The results also reveal that online travel services provided by travel service providers still need to be improved since the number of online bookers is declined. This paper concludes by discussing the limitation of this study and highlighting areas for the future research in online travel service field.

  13. Superluminal travel requires negative energies

    OpenAIRE

    Olum, Ken D.

    1998-01-01

    I investigate the relationship between faster-than-light travel and weak-energy-condition violation, i.e., negative energy densities. In a general spacetime it is difficult to define faster-than-light travel, and I give an example of a metric which appears to allow superluminal travel, but in fact is just flat space. To avoid such difficulties, I propose a definition of superluminal travel which requires that the path to be traveled reach a destination surface at an earlier time than any neig...

  14. Rabies vaccination for international travelers.

    Science.gov (United States)

    Gautret, Philippe; Parola, Philippe

    2012-01-05

    Rabies prevention in travelers is a controversial issue. According to experts, the decision to vaccinate results from an individual risk assessment based on the duration of stay, the likelihood of engagement in at-risk activities, the age of the traveler, the rabies endemicity and access to appropriate medical care in the country of destination. However, no detailed information is available regarding the last two determinants in many regions. Twenty-two cases of rabies were reported in tourists, expatriates and migrant travelers over the last decade, including three cases following short-term travel of no more than two weeks. Studies on rabies post-exposure prophylaxis (PEP) in travelers show that overall, 0.4% (range 0.01-2.3%) of travelers have experienced an at-risk bite per month of stay in a rabies-endemic country, while 31% of expatriates and 12% of tourists were vaccinated against rabies before traveling. The main reason cited by travelers for not being vaccinated is the cost of the vaccine. The majority of patients who sustained a high risk injury was not vaccinated against rabies before traveling and were not properly treated abroad. From available studies, the following risk factors for injuries sustained from potentially rabid animals may be identified: traveling to South-East Asia, India or North Africa, young age, and traveling for tourism. The duration of travel does not appear to be a risk factor. It should be noted that "at-risk activities" have not been addressed in these studies. Detailed rabies distribution maps and information on the availability of rabies biologics are urgently needed in order to identify those travelers who need pre-travel vaccination. Meanwhile, cost-minimization of rabies pre-exposure vaccination may be achieved in several ways, notably by using the intra-dermal method of vaccination.

  15. Surgical travellers: tapestry to Bayeux.

    Science.gov (United States)

    Hedley-Whyte, John; Milamed, Debra R

    2014-09-01

    The planning for surgery in war was revisited in 1937 when Ian Fraser was elected a member of the Surgical Travellers. At their 1938 Surgical Travellers meeting in Vienna, Ian and Eleanor Fraser were evicted from their hotel room by the Nazis. The 1939 meeting in Belfast discussed the organization of surgery and the conduct of Emergency Medical Service Hospitals in the United Kingdom; the vast majority were to be under civilian government and military control. From 1943 lengthy and informative organizational meetings were held at least monthly under the chairmanship of Sir Alexander Hood, KBE, Head of the RAMC. Surgical Consultants, now Major Generals, Brigadiers or Full Colonels in the British and U.S. Armies stationed in the UK, prepared for the invasion of Europe. The allocation of medical, surgical, nursing and auxiliary responsibilities was delineated. Liaison with the RAF and US Army Air Force was close as it was with the proposed leaders, Ulstermen Brooke and Montgomery. Montgomery chose Arthur Porritt as Surgeon in Chief to Supreme Headquarters Allied Expeditionary Force (SHAEF), and Eisenhower, General Albert W. Kenner. Just after D-Day, Porritt met Ian Fraser, who had waded in on Arromanches Beach. The triage and evacuation plans for Allied casualties had been controversial, particularly as regards Landing Ship Tanks (LSTs). The dispute with the Hood-selected surgeons on one side, against medical and surgical deployment of LSTs, and Admiral Ernest King and Winston Churchill on the other, favouring LST use for surgery and evacuation. King and Churchill were correct but total Allied air superiority allowed wide use of many of the Allies' Dakotas; 10,000 DC-3s were eventually in service. Supported by forty Allied combat planes to each Luftwaffe, the dispute about Landing Ship Tank use in about a fortnight became moot. The multifaceted role of the Princess Royal in the Emergency Medical Services of the United Kingdom and her close liaison with the Consultant

  16. The Case against the Arts from Plato to Tolstoy and Its Implications for Why and How the Arts Should Be Taught in Schools

    Science.gov (United States)

    Tate, Nicholas

    2016-01-01

    From Plato onwards many of the great Western thinkers have explored the nature of the arts, their contribution to society and their role in education. This has often involved a discussion of the potentially negative impact of the arts. The recurring message has been that the arts can warp judgment, elevate emotion at the expense of reason,…

  17. Why Did Socrates Deny That He Was a Teacher? Locating Socrates among the New Educators and the Traditional Education in Plato's "Apology of Socrates"

    Science.gov (United States)

    Mintz, Avi I.

    2014-01-01

    Plato's "Apology of Socrates" contains a spirited account of Socrates' relationship with the city of Athens and its citizens. As Socrates stands on trial for corrupting the youth, surprisingly, he does not defend the substance and the methods of his teaching. Instead, he simply denies that he is a teacher. Many scholars have…

  18. Cardiovascular events in acute coronary syndrome patients with peripheral arterial disease treated with ticagrelor compared to clopidogrel: Data from the PLATO trials

    DEFF Research Database (Denmark)

    Patel, Manesh R.; Becker, Richard C.; Wojdyla, Daniel M.;

    Abstract 14299: Cardiovascular Events in Acute Coronary Syndrome Patients With Peripheral Arterial Disease Treated With Ticagrelor Compared to Clopidogrel: Data From the PLATO Trial Manesh R Patel1; Richard C Becker1; Daniel M Wojdyla2; Håkan Emanuelsson3; William Hiatt4; Jay Horrow5; Steen Husted6...

  19. Smart Travel Based on Space-Time Behavior Study

    Institute of Scientific and Technical Information of China (English)

    Chai; Yanwei; Shen; Yue; Ta; Na; Qian; Fang

    2015-01-01

    In view of the significant demands and development trends of urbanization during the 12 th Five-Year Plan period, "smart city" has attracted wide attention as an advanced city development concept in China. Under the circumstance of rapid urbanization, traffic congestion and accessibility defi ciency become major challenges to many Chinese cities, as transportation and travel are closely related to the effi ciency of a city’s operation and the quality of people’s life. As essential part of smart city planning and management, smart travel offers an effective behavior planning countermeasure to reduce the amount of urban traffi c and optimize the space-time distribution of travels and provides an effective technology to enrich the theories and methodologies of urban and transportation planning. Orienting at the practical demand of citizens and focusing on their travel behavior, this paper carries out a discussion on the smart travel framework based on space-time behavior study and analyzes smart travel planning and its policy route from multiple perspectives, including a prediction on travel demand, transportation planning, public policy-making, and urban planning. What’s more, the paper suggests travel services for citizens based on space-time behavior analysis, such as providing personalized information, smart decision-making support, and individual behavior planning.

  20. Fellow travellers: Working memory and mental time travel in rodents.

    Science.gov (United States)

    Dere, Ekrem; Dere, Dorothea; de Souza Silva, Maria Angelica; Huston, Joseph P; Zlomuzica, Armin

    2017-03-19

    The impairment of mental time travel is a severe cognitive symptom in patients with brain lesions and a number of neuropsychiatric disorders. Whether animals are also able to mentally travel in time both forward and backward is still a matter of debate. In this regard, we have proposed a continuum of mental time travel abilities across different animal species, with humans being the species with the ability to perform most sophisticated forms of mental time travel. In this review and perspective article, we delineate a novel approach to understand the evolution, characteristics and function of human and animal mental time travel. Furthermore, we propose a novel approach to measure mental time travel in rodents in a comprehensive manner using a test battery composed of well-validated and easy applicable tests. Copyright © 2017. Published by Elsevier B.V.

  1. Travel Demand Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Southworth, Frank [ORNL; Garrow, Dr. Laurie [Georgia Institute of Technology

    2011-01-01

    This chapter describes the principal types of both passenger and freight demand models in use today, providing a brief history of model development supported by references to a number of popular texts on the subject, and directing the reader to papers covering some of the more recent technical developments in the area. Over the past half century a variety of methods have been used to estimate and forecast travel demands, drawing concepts from economic/utility maximization theory, transportation system optimization and spatial interaction theory, using and often combining solution techniques as varied as Box-Jenkins methods, non-linear multivariate regression, non-linear mathematical programming, and agent-based microsimulation.

  2. Time, travel and infection.

    Science.gov (United States)

    Cliff, Andrew; Haggett, Peter

    2004-01-01

    The collapse of geographical space over the last 200 years has had profound effects on the circulation of human populations and on the transfer of infectious diseases. Three examples are used to illustrate the process: (a) the impact of the switch from sail to steamships in importing measles into Fiji over a 40-year period; (b) changes in measles epidemic behaviour in Iceland over a 150-year period; and (c) changes in the spread of cholera within the United States over a 35-year period. In each case, the link between time, travel and disease has been an intimate one.

  3. The SUN S TRAVELS

    Institute of Scientific and Technical Information of China (English)

    Robert; Louis; Stevenson

    2005-01-01

    The sun is not a-bed, when I At night upon my pillow lie; Stilt round the earth his Way he takes, And morning after morning makes. White here at home, in shining day, We round the sunny garden play, Each tittle Indian sleepy - head Is being kissed and put to bed. And When at eve I rise from tea, Day dawns beyond the Atlantic Sea; And all the children in the West Are getting up and being dressed.The SUN'S TRAVELS@Robert Louis Stevenson

  4. Health hazards of international travel.

    Science.gov (United States)

    Cossar, J H; Reid, D

    1989-01-01

    The growth of travel and the increasing numbers of those affected by travel-related illnesses, some of a serious nature, will cause this subject to demand the attention of the medical profession, the travel trade, travellers themselves and the health authorities of countries receiving tourists. Provision of appropriate advice for the traveller is a shared responsibility, best channelled mainly through travel agencies; it can moreover be shown to be cost-beneficial. Continued monitoring of illness in travellers and provision of information systems geared to this problem and its prevention are fully justified. They should be based on traditional channels of communication and currently-available modern technology, and be readily accessible to medical and related workers. Increased collaboration between medical workers, health educators and those involved in the travel trade would be a positive and useful contribution towards the reduction of illness and discomfort among travellers and the associated expense incurred by the various national health services concerned. There are clearly economic benefits from the development of international tourism, but these have to be balanced in countries accepting tourists by attention to the prevention of illnesses associated with travel.

  5. Teaching Wide Sargasso Sea in New Jersey

    Science.gov (United States)

    Jolley, Susan Arpajian

    2005-01-01

    High school teacher Susan Arpajian Jolley emphasizes experience and understanding by using the related novels "Wide Sargasso Sea" and "Jane Eyre" to help her students travel into unfamiliar cultural territory. "Wide Sargasso Sea" relates to Caribbean history and culture, feminism, race relations, colonialism, and personal identity.

  6. Teaching Wide Sargasso Sea in New Jersey

    Science.gov (United States)

    Jolley, Susan Arpajian

    2005-01-01

    High school teacher Susan Arpajian Jolley emphasizes experience and understanding by using the related novels "Wide Sargasso Sea" and "Jane Eyre" to help her students travel into unfamiliar cultural territory. "Wide Sargasso Sea" relates to Caribbean history and culture, feminism, race relations, colonialism, and…

  7. Traveling-Wave Tubes

    Science.gov (United States)

    Kory, Carol L.

    1998-01-01

    The traveling-wave tube (TWT) is a vacuum device invented in the early 1940's used for amplification at microwave frequencies. Amplification is attained by surrendering kinetic energy from an electron beam to a radio frequency (RF) electromagnetic wave. The demand for vacuum devices has been decreased largely by the advent of solid-state devices. However, although solid state devices have replaced vacuum devices in many areas, there are still many applications such as radar, electronic countermeasures and satellite communications, that require operating characteristics such as high power (Watts to Megawatts), high frequency (below 1 GHz to over 100 GHz) and large bandwidth that only vacuum devices can provide. Vacuum devices are also deemed irreplaceable in the music industry where musicians treasure their tube-based amplifiers claiming that the solid-state and digital counterparts could never provide the same "warmth" (3). The term traveling-wave tube includes both fast-wave and slow-wave devices. This article will concentrate on slow-wave devices as the vast majority of TWTs in operation fall into this category.

  8. Time travel a history

    CERN Document Server

    Gleick, James

    2016-01-01

    From the acclaimed author of The Information and Chaos, here is a mind-bending exploration of time travel: its subversive origins, its evolution in literature and science, and its influence on our understanding of time itself. The story begins at the turn of the previous century, with the young H. G. Wells writing and rewriting the fantastic tale that became his first book and an international sensation: The Time Machine. It was an era when a host of forces was converging to transmute the human understanding of time, some philosophical and some technological: the electric telegraph, the steam railroad, the discovery of buried civilizations, and the perfection of clocks. James Gleick tracks the evolution of time travel as an idea that becomes part of contemporary culture—from Marcel Proust to Doctor Who, from Jorge Luis Borges to Woody Allen. He investigates the inevitable looping paradoxes and examines the porous boundary between pulp fiction and modern physics. Finally, he delves into a temporal shift that...

  9. Ion Acoustic Travelling Waves

    CERN Document Server

    Webb, G M; Ao, X; Zank, G P

    2013-01-01

    Models for travelling waves in multi-fluid plasmas give essential insight into fully nonlinear wave structures in plasmas, not readily available from either numerical simulations or from weakly nonlinear wave theories. We illustrate these ideas using one of the simplest models of an electron-proton multi-fluid plasma for the case where there is no magnetic field or a constant normal magnetic field present. We show that the travelling waves can be reduced to a single first order differential equation governing the dynamics. We also show that the equations admit a multi-symplectic Hamiltonian formulation in which both the space and time variables can act as the evolution variable. An integral equation useful for calculating adiabatic, electrostatic solitary wave signatures for multi-fluid plasmas with arbitrary mass ratios is presented. The integral equation arises naturally from a fluid dynamics approach for a two fluid plasma, with a given mass ratio of the two species (e.g. the plasma could be an electron pr...

  10. CONCEPTUAL CLARIFICATIONS REGARDING YOUTH TRAVEL

    OpenAIRE

    Lect. Ph.D Student Moisa Claudia Olimpia

    2010-01-01

    Currently, there is no clear definition for the youth travel concept. This concept emerged much latter than the first forms of manifestation of tourism for young people, namely the beginning of the ’90s when the first studies regarding youth travel were also conducted. No doubt, the concept of youth travel ensues from three notions, namely: youth, tourism and vacation – in the sense of free time. All the definitions used by tourism organizations, by various national tourism administrations an...

  11. Travel opinion leaders and seekers

    DEFF Research Database (Denmark)

    Yoo, Kyung-Hyan; Gretzel, Ulrike; Zach, Florian

    2011-01-01

    While opinion leadership has been recognized as important in tourism, there has been very little empirical research investigating the phenomenon. Given new developments in social media technologies, it is especially important to understand whether travel opinion leadership and seeking are drivers...... media use. The findings suggest that travel opinion leadership and seeking are distinct but connected. Both opinion leaders and seekers are technology savvy, young, educated, involved in travel planning and engaged in social media use for travel. What distinguishes opinion leaders is their greater...

  12. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2008-01-01

    Entry requirements for the USA: "ESTA" (Electronic System for Travel Authorization) online registration The requirement to register before entering the USA announced by the Department of Homeland Security (DHS) is to be introduced on 12 January 2009. Visitors to the USA will then be required to register their personal data and travel data online not less than 72 hours prior to travel. https://esta.cbp.dhs.gov/ General information on entry requirements for the USA are also available on the Carlson Wagonlit Travel website under the heading „CWT informs": http://www.carlsonwagonlit.ch

  13. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2009-01-01

    Entry requirements for the USA: "ESTA" (Electronic System for Travel Authorization) online registration The requirement to register before entering the USA announced by the Department of Homeland Security (DHS) is to be introduced on 12 January 2009. Visitors to the USA will then be required to register their personal data and travel data online not less than 72 hours prior to travel. https://esta.cbp.dhs.gov/ General information on entry requirements for the USA is also available on the Carlson Wagonlit Travel website under the heading „CWT informs": http://www.carlsonwagonlit.ch

  14. Solar wind travel time

    Science.gov (United States)

    Russell, C. T.

    A useful rule of thumb in solar terrestrial studies is that the solar wind travels 4 Earth radii (RE) per minute. Long-term studies of solar wind velocity [e.g., Luhmann et al., 1993; 1994] show that the median velocity is about 420 km/s, corresponding to 3.96 RE min-1. The quartiles are about 370 km/s and 495 km/s, corresponding to 3.48 Re min-1 and 4.66 Re min-1 respectively. This number helps estimate the delays expected when observing a discontinuity at a solar wind monitor; one example is ISEE-3 when it was at the forward libration point (about 60 min). It is also helpful for estimating how much time passes before the dayside magnetosphere is compressed as denser solar wind flows by (about 2.5 min).

  15. SUNSCEEN FOR TRAVELLERS

    Directory of Open Access Journals (Sweden)

    Novita Lavi N

    2013-05-01

    Full Text Available The sun exposure brings negative effects on the skin such like early aging, spots and skin cancer as the most terrible effect. To reduce the adverse effects of the sun, it is not enough just to behavioral therapy, but also had no protection from the outside. Especially for travellers that exposed by the sun excessively. There is sunscreen, product specially formulated to absorb or deflect ultraviolet rays. A sunscreen preparation contains chemical compounds that can absorb, scatter or reflect sunlight on the skin. This writing contains about effect of ultraviolet, skin protection from ultraviolet from behavioral aspect, variaty and contents of sunscreen and sunscreen application for travellers. Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

  16. International Travelers' Sociodemographic, Health, and Travel Characteristics: An Italian Study.

    Science.gov (United States)

    Troiano, Gianmarco; Mercone, Astrid; Bagnoli, Alessandra; Nante, Nicola

    Approximately the 8% of travelers requires medical care, with the diagnosis of a vaccine-preventable disease. The aim of our study was to analyze the socio-demographic, health and travel characteristics of the Italian international travelers. We conducted a cross sectional study from January 2015 to June 2016, at the Travel Medicine Clinic of Siena, asking the doctor to interview patients who attended the Clinic, recording socio-demographic and travel information, malaria prophylaxis, vaccinations. The data were organized in a database and processed by software Stata®. We collected 419 questionnaires. Patients chose 71 countries for their travels; the favorite destinations were: India (6.31%), Thailand (6.31%), and Brazil (5.10%). The mean length of stay was 36.17 days. Italians, students, and freelancers tended to stay abroad for a longer time (mean: 36.4 days, 59.87 days and 64.16 days respectively). 33.17% of our sample used drugs for malaria chemoprophylaxis: 71.9% of them used Atovaquone/Proguanil (Malarone®), 26.6% used Mefloquine (Lariam®), 1.5% other drugs. The vaccinations that travelers mostly got in our study were to prevent hepatitis A (n = 264), the typhoid fever (n = 187), the Tetanus + Diphtheria + Pertussis (n = 165), the Yellow fever (n = 118) and the cholera (n = 78). Twenty-eight (6.68%) refused some recommended vaccinations. The vaccines mostly refused were for Typhoid fever (n = 20), hepatitis a (n = 9), and cholera (n = 9). Our results demonstrated that Italian international travelers are at-risk because of their poor vaccinations adherence. This implies that pre-travel counseling is fundamental to increase the knowledge of the risks and the compliance of future travelers. Copyright © 2016 Icahn School of Medicine at Mount Sinai. Published by Elsevier Inc. All rights reserved.

  17. Carlson Wagonlit Travel is moving

    CERN Multimedia

    2013-01-01

    The renovation of the Main Building continues!   Because of this, Carlson Wagonlit Travel will move from building 62 to building 510 on 4 October and the agency will be closed in the afternoon. An emergency service will be organised for official travels only. Phone: 022 799 75 73 & 022 799 75 78 / e-mail: cern@carlsonwagonlit.ch

  18. Monitoring Travel Time Reliability on Freeways

    NARCIS (Netherlands)

    Tu, Huizhao

    2008-01-01

    Travel time and travel time reliability are important attributes of a trip. The current measures of reliability have in common that in general they all relate to the variability of travel times. However, travel time reliability does not only rely on variability but also on the stability of travel

  19. Monitoring Travel Time Reliability on Freeways

    NARCIS (Netherlands)

    Tu, Huizhao

    2008-01-01

    Travel time and travel time reliability are important attributes of a trip. The current measures of reliability have in common that in general they all relate to the variability of travel times. However, travel time reliability does not only rely on variability but also on the stability of travel ti

  20. Turbulent boundary-layer control with spanwise travelling waves

    Energy Technology Data Exchange (ETDEWEB)

    Whalley, Richard D; Choi, Kwing-So, E-mail: Richard.Whalley@nottingham.ac.uk, E-mail: Kwing-So.Choi@nottingham.ac.uk [Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD (United Kingdom)

    2011-12-22

    It has been demonstrated through numerical simulations using Lorentz forcing that spanwise travelling waves on turbulent wall flows can lead to a skin-friction drag reduction on the order of 30%. As an aeronautical application of this innovative flow control technique, we have investigated into the use of Dielectric-Barrier-Discharge (DBD) plasma actuators to generate spanwise travelling waves in air. The near-wall structures modified by the spanwise travelling waves were studied using the PIV technique in a wind tunnel, while the associated turbulence statistics were carefully documented using hot-wire anemometry. We observed the spreading of low-speed fluid by the spanwise travelling streamwise vortices, which seems to have greatly attenuated the turbulence production process. This is very much in line with the finding of DNS studies, where wide low-speed ribbons replaced the low-speed streaks.

  1. Travel Writing on the Edge: An Intermedial Approach to Travel Books and Travel Blogs

    Directory of Open Access Journals (Sweden)

    Calzati Stefano

    2015-08-01

    Full Text Available After discussing the limits and potentialities of the definitions of travel writing proposed by Paul Fussell (1980. Patrick Holland and Graham Huggan (1998 and Jan Borm (2004, the article presents a characterization of travel writing both as a genre with a precise rhetorical status, as well as a praxis of knoivledge, which derives from the interplay between travelling and writing. Building on this, a comparison between two Italian travel books and two Italian travel blogs about China is proposed. Specifically, by considering these texts as “intermedial transpositions” (Wolf 2008 that realize the same generic and epistemological matrix (i.e. travel writing, a Multimodal Critical Discourse Analysis (MCDA is conducted in order to assess: 1 how the book and the blog, as different medial formats, interpret the rhetorical features of the travel writing genre: and 2 to what extent the gnoseological and cross-cultural potentials of travel writing, as a praxis of knowledge, is affected by the process of transposition.

  2. Mathematical description of bacterial traveling pulses.

    Directory of Open Access Journals (Sweden)

    Jonathan Saragosti

    Full Text Available The Keller-Segel system has been widely proposed as a model for bacterial waves driven by chemotactic processes. Current experiments on Escherichia coli have shown the precise structure of traveling pulses. We present here an alternative mathematical description of traveling pulses at the macroscopic scale. This modeling task is complemented with numerical simulations in accordance with the experimental observations. Our model is derived from an accurate kinetic description of the mesoscopic run-and-tumble process performed by bacteria. This can account for recent experimental observations with E. coli. Qualitative agreements include the asymmetry of the pulse and transition in the collective behaviour (clustered motion versus dispersion. In addition, we can capture quantitatively the traveling speed of the pulse as well as its characteristic length. This work opens several experimental and theoretical perspectives since coefficients at the macroscopic level are derived from considerations at the cellular scale. For instance, the particular response of a single cell to chemical cues turns out to have a strong effect on collective motion. Furthermore, the bottom-up scaling allows us to perform preliminary mathematical analysis and write efficient numerical schemes. This model is intended as a predictive tool for the investigation of bacterial collective motion.

  3. Travellers: Design Collaboration and Digital Media

    Institute of Scientific and Technical Information of China (English)

    J. Bahoric; P. Nicholas; G. Ormston

    2008-01-01

    This paper examines the use of 3D electronic medium as a tool for procuring detailed design in-formation for the Sandridge Bridge Travellers project. The Sandridge Bridge Travellers project required the production of 10 7.5 m of tall x 5 - 12 m of wide figures under very tight programme and budget constraints.This was achieved through a synthesis of art and engineering, whereby structure and sculpture become one and the same. Traditional procurement routes would have entailed the production and interpretation of draw-ings and design details at all discipline interfaces before fabrication; an approach that was unfeasible given the constraints. Instead, The Travellers project saw a single electronic file pass backwards and forwards from client to architect, engineer, and fabricator, with information from the initial artistic concept work phases through to analysis, design, member scheduling and fabrication all integrated and facilitated by a single electronic medium. Key to the delivery was the use of 3D modeling and scripting programs that enabled the efficient use and development of design information through all stages of the design process. This enabled total integration of all trades requiring a collaborative approach where each party maintained joint ownership of the 3D design information from inception to conception.

  4. Carlson Wagonlit Travel

    CERN Multimedia

    Carlson Wagonlit Travel

    2005-01-01

    Chères clientes, chers clients, Le 3 janvier dernier, nous vous avons informé de la décision des compagnies aériennes de supprimer les commissions versées aux agences de voyages suisses. Cette mesure a été introduite progressivement pour être appliquées maintenant par toutes les compagnies, à quelques rares exceptions près. En conséquence, en accord avec le CERN, nous serons dans l'obligation d'appliquer une nouvelle liste de prix de nos transactions pour les voyages privés. Elle sera applicable dès le lundi 25 juillet 2005. Carlson Wagonlit Travel (CWT) vous propose : Son service de conseil personnalisé, professionnel et compétent Sa recherche de la solution la plus économique et la mieux adaptée à vos besoins Sa neutralité dans les comparaisons de prix et prestations Des informations com...

  5. Knowledge Representation in Travelling Texts

    DEFF Research Database (Denmark)

    Mousten, Birthe; Locmele, Gunta

    2014-01-01

    and the purpose of the text in a new context as well as on predefined parameters for text travel. For texts used in marketing and in technology, the question is whether culture-bound knowledge representation should be domesticated or kept as foreign elements, or should be mirrored or moulded—or should not travel...... at all! When should semantic and pragmatic elements in a text be replaced and by which other elements? The empirical basis of our work is marketing and technical texts in English, which travel into the Latvian and Danish markets, respectively....

  6. Last-Minute Travel Application

    OpenAIRE

    Hubner, Andre; Lenz, Mario; Borch, Roman; Posthoff, Michael

    2000-01-01

    In this article, we present a last-minute travel application as part of a complete virtual travel agency. Each year, a significant amount of tour packages are sold as last minute tours in Germany. It is impossible for a travel agent to keep track of all the offered tour packages. Electronic-commerce applications might present the best possible tour package for a specific customer request. Traditional database-driven applications, as used by most of the tour operators, are not sufficient enoug...

  7. Danish long distance travel A study of Danish travel behaviour and the role of infrequent travel activities

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    2014-01-01

    .g. socio-economic variables. The analysis of Danish travel activities described in the three different travel surveys has outlined detailed information on Danish travel behaviour at an aggregated level during the past two decades. It has above all revealed the significant role of leisure travel. Private...... in a study of leisure travel, with an analysis of the income elasticity of this travel segment. Due to the different survey methodologies, the samples of leisure activities describe the whole span from daily leisure travel activities embedded into people’s daily routines to the infrequent holiday activities....... The applied model describes the travel distance of leisure travel including the probability of having leisure activities or not. The study finds increasing income elasticities of travelling or not and increasing income elasticities of travel distances as the leisure purposes become less frequently completed...

  8. Catchment mixing processes and travel time distributions

    National Research Council Canada - National Science Library

    Botter, Gianluca

    2012-01-01

    ...) of travel, residence and evapotranspiration times, which are comprehensive descriptors of the fate of rainfall water particles traveling through catchments, and provide key information on hydrologic...

  9. Republican Utopia:from Plato to Moore%共和主义乌托邦:从柏拉图到莫尔

    Institute of Scientific and Technical Information of China (English)

    徐百军

    2012-01-01

    通过对柏拉图的《理想国》和莫尔的《乌托邦》的文本分析,我们发现他们的乌托邦思想中潜藏着共和主义叙事,实质上柏拉图和莫尔都希图建构一种共和主义乌托邦,由此也可以说乌托邦思想与共和主义之间原本就存在着一种共生的却被遗忘的历史关系,因而我们试图恢复以柏拉图和莫尔为代表的乌托邦思想家在共和主义政治光谱中的理论地位也并非一种主观冲动。%Through making a text analysis of Plato's Republic and Moore's Utopia,we find that a republican narrative has been hidden in their Utopian thought.Essencially,Plato and Moore both hoped to construct a republican utopia.It also can be said that there is a symbiotic and forgotten historical relation between the utopian thought and republicanism.So it is not a subjective impulse that we try to give the theoretical status in the republican political spectrum back to the utopian thinkers whose representatives are Plato and Moore.

  10. The great Lisbon earthquake and tsunami of 1755: lessons from the recent Sumatra earthquakes and possible link to Plato's Atlantis

    Science.gov (United States)

    Gutscher, M.-A.

    2006-05-01

    Great earthquakes and tsunami can have a tremendous societal impact. The Lisbon earthquake and tsunami of 1755 caused tens of thousands of deaths in Portugal, Spain and NW Morocco. Felt as far as Hamburg and the Azores islands, its magnitude is estimated to be 8.5 9. However, because of the complex tectonics in Southern Iberia, the fault that produced the earthquake has not yet been clearly identified. Recently acquired data from the Gulf of Cadiz area (tomography, seismic profiles, high-resolution bathymetry, sampled active mud volcanoes) provide strong evidence for an active east dipping subduction zone beneath Gibraltar. Eleven out of 12 of the strongest earthquakes (M>8.5) of the past 100 years occurred along subduction zone megathrusts (including the December 2004 and March 2005 Sumatra earthquakes). Thus, it appears likely that the 1755 earthquake and tsunami were generated in a similar fashion, along the shallow east-dipping subduction fault plane. This implies that the Cadiz subduction zone is locked (like the Cascadia and Nankai/Japan subduction zones), with great earthquakes occurring over long return periods. Indeed, the regional paleoseismic record (contained in deep-water turbidites and shallow lagoon deposits) suggests great earthquakes off South West Iberia every 1500 2000 years. Tsunami deposits indicate an earlier great earthquake struck SW Iberia around 200 BC, as noted by Roman records from Cadiz. A written record of even older events may also exist. According to Plato's dialogues The Critias and The Timaeus, Atlantis was destroyed by ‘strong earthquakes and floods … in a single day and night’ at a date given as 11,600 BP. A 1 m thick turbidite deposit, containing coarse grained sediments from underwater avalanches, has been dated at 12,000 BP and may correspond to the destructive earthquake and tsunami described by Plato. The effects on a paleo-island (Spartel) in the straits of Gibraltar would have been devastating, if inhabited, and may

  11. Revealing Spatial Variation and Correlation of Urban Travels from Big Trajectory Data

    Science.gov (United States)

    Li, X.; Tu, W.; Shen, S.; Yue, Y.; Luo, N.; Li, Q.

    2017-09-01

    With the development of information and communication technology, spatial-temporal data that contain rich human mobility information are growing rapidly. However, the consistency of multi-mode human travel behind multi-source spatial-temporal data is not clear. To this aim, we utilized a week of taxies' and buses' GPS trajectory data and smart card data in Shenzhen, China to extract city-wide travel information of taxi, bus and metro and tested the correlation of multi-mode travel characteristics. Both the global correlation and local correlation of typical travel indicator were examined. The results show that: (1) Significant differences exist in of urban multi-mode travels. The correlation between bus travels and taxi travels, metro travel and taxi travels are globally low but locally high. (2) There are spatial differences of the correlation relationship between bus, metro and taxi travel. These findings help us understanding urban travels deeply therefore facilitate both the transport policy making and human-space interaction research.

  12. REVEALING SPATIAL VARIATION AND CORRELATION OF URBAN TRAVELS FROM BIG TRAJECTORY DATA

    Directory of Open Access Journals (Sweden)

    X. Li

    2017-09-01

    Full Text Available With the development of information and communication technology, spatial-temporal data that contain rich human mobility information are growing rapidly. However, the consistency of multi-mode human travel behind multi-source spatial-temporal data is not clear. To this aim, we utilized a week of taxies’ and buses’ GPS trajectory data and smart card data in Shenzhen, China to extract city-wide travel information of taxi, bus and metro and tested the correlation of multi-mode travel characteristics. Both the global correlation and local correlation of typical travel indicator were examined. The results show that: (1 Significant differences exist in of urban multi-mode travels. The correlation between bus travels and taxi travels, metro travel and taxi travels are globally low but locally high. (2 There are spatial differences of the correlation relationship between bus, metro and taxi travel. These findings help us understanding urban travels deeply therefore facilitate both the transport policy making and human-space interaction research.

  13. The future of air travel

    National Research Council Canada - National Science Library

    Ben Iannotta

    2015-01-01

      Here, Iannotta discusses the future of air travel. Among other things, safety technologies that seemed exotic will become the norm, like the auto industry's hands-free Bluetooth systems and side-curtain airbags...

  14. Mosquito Bite Prevention For Travelers

    Science.gov (United States)

    ... and parasites that can cause diseases like chikungunya, dengue, Zika, and malaria. If you are traveling to an area where malaria is found, talk to your healthcare provider about malaria prevention medication that may be available. Protect yourself and ...

  15. DCHA Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — DTRAMS is a travel data collection system for DCHA that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.)...

  16. PPL Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — PTRAMS is a travel data collection system for PPL that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.) and...

  17. GH Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — HTRAMS is a travel data collection system for GH that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.) and...

  18. Travelers' Health: Viral Hemorrhagic Fevers

    Science.gov (United States)

    ... Climates Humanitarian Aid Workers Humanitarian Aid Workers in Ecuador Insurance International Adoption Jet Lag Last-Minute Travel ... Landry ML, Warnock DW, editors. Manual of Clinical Microbiology. 10th ed. Washington, DC: ASM Press; 2011. p. ...

  19. Transmedia storytelling on travel stories

    Directory of Open Access Journals (Sweden)

    Adolfo Baltar Moreno

    2016-01-01

    Full Text Available Travel stories form part of a great tradition inside Western Culture which has served historically to describe, to understand and to imagine other cul - tures and communities, far or near, being constituted into a real narra - tive genre. This type of story has been and is a reflection of the perception of the world based on the imaginary worlds created by the travelling narrators. How do modern authors of travel stories take advantage of the opportunities offered by transmedia storytelling? The present article explores the potential of these types of stories as a privileged object of study for transmedia storytelling studies, from the analysis of a sample of 80 narrative productions based on experiences of travel and presented in diverse editions of the Festival Le Grand Bivouac (France. It also shows the existence of a new contemporary trend inside this narrative form that transcends its literary nature.

  20. Long distance travel ‘today’

    DEFF Research Database (Denmark)

    Christensen, Linda

    2014-01-01

    This paper presents an overview of the Dane’s long distance travel. It is a part of the Drivers and Limits project about long distance travel. Long distance travel is in the project defined as infrequent travel with overnight stay. Danes 15-85 years-old travel in average 5.5 long distance travel...... per year og which a third is for international destinations, a third is for domestic second homes and a third are other domestic trips. However, 87% of the kilometres are for international destinations and only 4% are for domestic second homes. Travel activity is very uneven distributed with only half...... of the population having had a journey during the last three month. At the other hand 60% have travelled internationally during the last year and only 2% have never travelled abroad. The paper presents among other things how the travel activity is distributed on travel purpose and mode and how the mode choice...

  1. Sequentially pulsed traveling wave accelerator

    Science.gov (United States)

    Caporaso, George J.; Nelson, Scott D.; Poole, Brian R.

    2009-08-18

    A sequentially pulsed traveling wave compact accelerator having two or more pulse forming lines each with a switch for producing a short acceleration pulse along a short length of a beam tube, and a trigger mechanism for sequentially triggering the switches so that a traveling axial electric field is produced along the beam tube in synchronism with an axially traversing pulsed beam of charged particles to serially impart energy to the particle beam.

  2. A model of multidestination travel

    DEFF Research Database (Denmark)

    Morisugi, H.; Tussyadiah, Iis; Kono, T.

    2006-01-01

    , specifically address the choice of a single destination. This article is intended to explain multiple destination choice using Lancaster's characteristics model and a discussion of model implications of some marketing strategies for destinations as well as for tour operators. The model developed herein...... explains that packages of multiple destinations can create preferable combinations of characteristics for certain travelers. Furthermore, the model provides useful strategies for tour operators in combining destinations into a travel menu or package. © 2006 Sage Publications....

  3. Accessibility, Congestion and Travel Delays in Dar es Salaam

    DEFF Research Database (Denmark)

    Melbye, Dea Christine; Møller-Jensen, Lasse; Andreasen, Manja Hoppe

    2015-01-01

    on to present a review of research into travel speed levels and congestion in Dar es Salaam. A set of city-wide maps of accessibility and delay levels are constructed based on available speed data and road network data obtained from the OpenStreetMap project and the findings are discussed with respect...

  4. Infectious Risks of Traveling Abroad.

    Science.gov (United States)

    Chen, Lin H; Blair, Barbra M

    2015-08-01

    A popular leisure activity, international travel can be associated with some infections. The most common travel-related illnesses appear to be gastrointestinal, dermatologic, respiratory, and systemic febrile syndromes. The pretravel medical consultation includes immunizations, malaria chemoprophylaxis, self-treatment for traveler's diarrhea, and advice on the prevention of a myriad of other infectious causes including dengue, chikungunya, rickettsiosis, leptospirosis, schistosomiasis, and strongyloidiasis. Travel to locations experiencing outbreaks such as Ebola virus disease, Middle East respiratory syndrome, avian influenza, and chikungunya call for specific alerts on preventive strategies. After travel, evaluation of an ill traveler must explore details of exposure, including destinations visited; activities; ingestion of contaminated food or drinks; contact with vectors, animals, fresh water, or blood and body fluids; and other potential exposures. Knowledge of the geographic distribution of infectious diseases is important in generating the differential diagnoses and testing accordingly. Empiric treatment is sometimes necessary when suspicion of a certain diagnosis is strong and confirmatory tests are delayed or lacking, particularly for infections that are rapidly progressive (for example, malaria) or for which timing of testing is prolonged (such as leptospirosis).

  5. Understanding travel information search behaviors by levels of information technology adoption

    Science.gov (United States)

    Junghye Angela Kah; Christine A. Vogt; Kelly MacKay

    2007-01-01

    Although the signifi cance of the Internet has been widely discussed in previous studies, the research of e-commerce has focused primarily on organizational and business perspectives (Sigala 2004). The growing number of Internet users allows a better understanding of online tourists who seek travel information and book or purchase travel products. The levels of...

  6. Plasmodium knowlesi in travellers, update 2014.

    Science.gov (United States)

    Müller, Mattia; Schlagenhauf, Patricia

    2014-05-01

    Since the initial discovery of Plasmodium knowlesi in Malaysia, cases have been reported from several neighbouring countries. Tourism has also resulted in an increasing number of cases diagnosed in Europe, America, and Oceania. In this review we focus on the risk of the travel-associated acquisition of P. knowlesi malaria. A search of the literature in PubMed was carried out to identify articles and literature on the distribution of P. knowlesi infections in Southeast Asia and details of its acquisition and importation by travellers to other continents. The cut-off date for the search was December 1, 2013. Search words used were: "Plasmodium knowlesi", "Plasmodium knowlesi infections", "Plasmodium knowlesi travellers", "Plasmodium knowlesi prevalence", "Plasmodium knowlesi host", "Plasmodium knowlesi vector" "Plasmodium knowlesi RDT", and "Plasmodium knowlesi Malaysia". Traveller numbers to Malaysia were obtained from the Tourism Malaysia website. A total of 103 articles were found. Using a selection of these and others identified from the reference lists of the papers, we based our review on a total of 66 articles. P. knowlesi malaria appears to be the most common malaria species in Malaysian Borneo and is also widely distributed on the Malaysian mainland. Furthermore, locally transmitted cases of P. knowlesi malaria have been reported in Thailand, the Philippines, Vietnam, Singapore, Myanmar, Indonesian Borneo, and Cambodia. Two cases have been reported from non-endemic countries in Asia (Japan and Taiwan) in people with a history of travel to Malaysia and the Philippines. Twelve cases were imported to their home countries by travellers from other continents: two from the USA, two from the Netherlands, two from Germany, and one each from Spain, France, Sweden, Finland, Australia, and New Zealand. In most cases, the infection was associated with a trip to or near forested areas. The symptoms were fever (n=12), headache (n=6), chills (n=6), nausea (n=4), myalgia (n

  7. Counting The Cats In Zanzibar: American Travel Abroad in American Travel Writing to 1914 Counting The Cats In Zanzibar: American Travel Abroad in American Travel Writing to 1914

    Directory of Open Access Journals (Sweden)

    Terry Caesar

    2009-09-01

    Full Text Available In 1914 Josiah Royce began his address to a scientific gathering by comparing philosophy to "a sort of Cook's bureau." "Its servants," Royce continued, "are taught to speak various languages -- all of them ill -- and to know little of the inner life of the numerous foreign lands to which they guide their feet, or check the luggage of their fellow men." Yet these agents have their use, Royce concluded, "if new comparative studies of ideas of various and widely sundered provinces of research are to be carried out at all," and he bid his listeners to regard him, "if you wish to vary the name, as representing some bureau of university travel." In 1914 Josiah Royce began his address to a scientific gathering by comparing philosophy to "a sort of Cook's bureau." "Its servants," Royce continued, "are taught to speak various languages -- all of them ill -- and to know little of the inner life of the numerous foreign lands to which they guide their feet, or check the luggage of their fellow men." Yet these agents have their use, Royce concluded, "if new comparative studies of ideas of various and widely sundered provinces of research are to be carried out at all," and he bid his listeners to regard him, "if you wish to vary the name, as representing some bureau of university travel."

  8. A dialogical exploration of the grey zone of health and illness: medical science, anthropology, and Plato on alcohol consumption.

    Science.gov (United States)

    Bonner, Kieran

    2009-01-01

    This paper takes a phenomenological hermeneutic orientation to explicate and explore the notion of the grey zone of health and illness and seeks to develop the concept through an examination of the case of alcohol consumption. The grey zone is an interpretive area referring to the irremediable zone of ambiguity that haunts even the most apparently resolute discourse. This idea points to an ontological indeterminacy, in the face of which decisions have to be made with regard to the health of a person (e.g., an alcoholic), a system (e.g., the health system), or a society. The fundamental character of this notion will be developed in relation to the discourse on health and the limitations of different disciplinary practices. The case of alcohol consumption will be used to tease out the grey zone embedded in the different kinds of knowledge made available through the disciplinary traditions of medical science, with its emphasis on somatic well-being, and anthropology, with its focus on communal well-being. This tension or grey zone embedded in different knowledge outcomes will be shown to have a discursive parallel with the dialogue between the Athenian, the Spartan, and the Cretan in Plato's Laws. Making use of the dialogical approach as described by Gadamer, the Athenian's particular resolution of the tension will be explored as a case study to demonstrate the necessarily particular analysis involved in a grey zone resolution.

  9. What is good sport: Plato's view Co je to dobrý sport: Platónův pohled

    Directory of Open Access Journals (Sweden)

    Jernej Pisk

    2006-02-01

    Full Text Available One of Plato's most common questions found in his dialogues is "What is something?" By asking this question Plato usually brought his co-speakers to the recognition that in fact they do not have a full comprehension of what something is, although they have a partial comprehension of it. The awareness of one's incomplete cognition is the first step to be made on the philosophic way to truth. As in ancient times also today Plato asks us – the modern philosophers of sport – "What is sport?" or more precisely "What is good sport?" Probably the best of Plato's answers to this question can be found in the basic concepts of his philosophy regarding his hierarchical division of the state and human soul into three parts. Since sport is derived from human being also the goodness of sport can be divided into three stages. The lowest stage of sport corresponds to the first part of the soul – the appetite soul. On this stage sport is based on the gaining of material goods through prizes won at competitions. In the philosophic view, this is the lowest possible stage of goodness of sport. The second stage of sport corresponds to the second part of the soul – the emotional soul. Sport at this stage is based on the elementary ancient agon, which seeks fulfilment in the winning of honour and glory. The greatest and the most superior is the third part of the soul – the reasonable soul. According to this, also the sport corresponding to the third part of the soul is the best. For this kind of sport it is no longer necessary to compete with other contestants, since it can achieve it's fulfilment in perfect execution of movement or exercise, in which the perfect cooperation between reason (soul and body is attained. At this stage of sport it is the most important to compete and win over one's self, and this can be achieved by everyone, without regard to his/her physical abilities in comparison with others. In Plato's view, good sport is the sport directed

  10. Danish long distance travel A study of Danish travel behaviour and the role of infrequent travel activities

    OpenAIRE

    Knudsen, Mette Aagaard; Rich, Jeppe; Nielsen, Otto Anker

    2014-01-01

    Historically there has been a lack of knowledge with respect to long distance travel. Due to the considerable contribution of long distance travel to total travelled kilometres and the related energy consumption from the transport sector and derived impacts on greenhouse emissions, this is problematic. The average travel distance has steadily increased during the latest decades together with the increasing motorisation of daily travel and international aviation. Previously most focus has been...

  11. Are buffers boring? Uniqueness and asymptotical stability of traveling wave fronts in the buffered bistable system.

    Science.gov (United States)

    Tsai, Je-Chiang; Sneyd, James

    2007-04-01

    Traveling waves of calcium are widely observed under the condition that the free cytosolic calcium is buffered. Thus it is of physiological interest to determine how buffers affect the properties of calcium waves. Here we summarise and extend previous results on the existence, uniqueness and stability of traveling wave solutions of the buffered bistable equation, which is the simplest possible model of the upstroke of a calcium wave. Taken together, the results show that immobile buffers do not change the existence, uniqueness or stability of the traveling wave, while mobile buffers can eliminate a traveling wave. However, if a wave exists in the latter case, it remains unique and stable.

  12. A relational approach to analysing leisure travel

    NARCIS (Netherlands)

    Ettema, D.F.; Schwanen, T.

    2012-01-01

    Leisure travel makes up a very significant part of daily travel and therefore needs to be considered in any travel demand management or general land use and transportation policy. Yet, research into leisure mobility has tended to ignore important aspects of leisure travel, such as its joint characte

  13. Practical advice for perioperative travel nurses.

    Science.gov (United States)

    Brumley, Cindy L

    2002-10-01

    Travel nursing presents unique opportunities that permanent employees may never experience. Today's nursing shortage allows travel nurses to fill temporary staff positions while experiencing the sights, culture, and cuisine of a location of their choosing. This creates a beneficial situation for travel nurses, hospitals, travel companies, and, ultimately, patients. Knowledgeable, flexible nurses and traveler-friendly hospitals can extend contracts if mutually agreeable, thus prolonging the benefits. Before beginning the adventure, however, travelers must have realistic expectations. Many disappointed travelers may have been more successful had they done better research.

  14. The value of travel time variance

    DEFF Research Database (Denmark)

    Fosgerau, Mogens; Engelson, Leonid

    2011-01-01

    This paper considers the value of travel time variability under scheduling preferences that are defined in terms of linearly time varying utility rates associated with being at the origin and at the destination. The main result is a simple expression for the value of travel time variability...... that does not depend on the shape of the travel time distribution. The related measure of travel time variability is the variance of travel time. These conclusions apply equally to travellers who can freely choose departure time and to travellers who use a scheduled service with fixed headway. Depending...... on parameters, travellers may be risk averse or risk seeking and the value of travel time may increase or decrease in the mean travel time....

  15. Observational Study of Travelers' Diarrhea.

    Science.gov (United States)

    Meuris

    1995-03-01

    Background: European air travelers returning from Algeria, Egypt, Mexico, Morocco, and Tunisia were interviewed about their experience of travelers' diseases upon arrival in Brussels. Diarrhea was mentioned by 37% of the adults and 27% of the children. These subjects were questioned about the types of measures taken, type and duration of drug treatment (if any), and about duration of diarrhea and side effects experienced. Methods: Final analysis was performed based on 2160 interviews. The largest proportion of diarrhea was reported in the age group 15-24 years (46%). Results: The majority of the 2160 subjects had opted for drug treatment (81%): 927 subjects for loperamide alone, 235 for loperamide in combination with nifuroxazide, and 178 for nifuroxazide alone. Other drugs had been used less frequently. The median time to recovery was 2.4 days with loperamide compared to 3.2 days with nifuroxazide and to 3.4 days for the no-treatment group. Conclusions: A stratification of the results by severity of the diarrhea suggests a rank of antidiarrheal potency as follows: loperamide > nifuroxazide > no-drug treatment. The side effect with the highest incidence was constipation (2.4% with loperamide). (J Travel Med 2:11-15, 1995) Travelers' diarrhea is usually defined as the passage of at least three unformed stools per day or any number of such stools when accompanied by fever, abdominal cramping, or vomiting. The definition may be broadened to include more trivial bowel disturbance.1,2 The duration of this self-limited disease generally is 3 to 5 days. Medical intervention aims at shortening the duration of disease, thus allowing the sufferer to resume his or her usual activities at an early stage. A shortened period of recovery to physical well-being has obvious favorable economic implications if the traveler is on business and may help the maintenance of a desired level of quality of life while a traveler is on holiday. An observational study of various medical

  16. Extended time-travelling objects in Misner space

    CERN Document Server

    Levanony, Dana

    2011-01-01

    Misner space is a two-dimensional (2D) locally-flat spacetime which elegantly demonstrates the emergence of closed timelike curves from causally well-behaved initial conditions. Here we explore the motion of rigid extended objects in this time-machine spacetime. This kind of 2D time-travel is found to be risky due to inevitable self-collisions (i.e. collisions of the object with itself). However, in a straightforward four-dimensional generalization of Misner space (a physically more relevant spacetime obviously), we find a wide range of "safe" time-travel orbits free of any self-collisions.

  17. Exact travelling wave solutions for some important nonlinear physical models

    Indian Academy of Sciences (India)

    Jonu Lee; Rathinasamy Sakthivel

    2013-05-01

    The two-dimensional nonlinear physical models and coupled nonlinear systems such as Maccari equations, Higgs equations and Schrödinger–KdV equations have been widely applied in many branches of physics. So, finding exact travelling wave solutions of such equations are very helpful in the theories and numerical studies. In this paper, the Kudryashov method is used to seek exact travelling wave solutions of such physical models. Further, three-dimensional plots of some of the solutions are also given to visualize the dynamics of the equations. The results reveal that the method is a very effective and powerful tool for solving nonlinear partial differential equations arising in mathematical physics.

  18. Choosing between travel agencies and the Internet

    OpenAIRE

    2015-01-01

    M.A. (Tourism and Hospitality Management) Travel agents have been traditionally seen as the key intermediary between suppliers of travel services and the traveller. Developments in the field of information technology offer consumers an alternative to booking via a travel agent - the option to plan and arrange holidays online. Due to the ever developing nature of technology, travellers have the luxury of a multitude of choices in their everyday life - particularly so in making decisions reg...

  19. Poliomyelitis--prevention in travellers.

    Science.gov (United States)

    Mayer, Cora A; Neilson, Amy A

    2010-03-01

    This article is the second in a series providing a summary of prevention strategies and vaccination for infections that may be acquired by travellers. The series aims to provide practical strategies to assist general practitioners in giving travel advice, as a synthesis of multiple information sources which must otherwise be consulted. Poliomyelitis is a potentially fatal viral illness, which may cause acute flaccid paralysis and permanent central nervous system damage. Ongoing global efforts to eradicate poliomyelitis have been under way since 1988. Travellers are at risk of infection in countries with endemic wild poliomyelitis virus or imported cases, and can spread the infection to areas where poliomyelitis has been eradicated. While all adults should be immune to poliomyelitis, it is important that at-risk travellers are vaccinated appropriately. Vaccine options and regions currently reporting poliomyelitis are presented from a number of sources, which may facilitate the process of giving travel advice in a general practice setting, although it is also important to seek up-to-date epidemiological information.

  20. Future Trends in Business Travel Decision Making

    Science.gov (United States)

    Mason, Keith J.

    2002-01-01

    This research surveys twenty large companies and their travellers to identify and evaluate the effects of pressures on the business travel market in the future. The influence of the following areas on the decision making process are addressed: (1) Corporate travel policies and increasing professionalism in corporate purchasing; (2) The development of global strategic airline alliances; (3) The emergence of low cost airlines on short haul markets; and (4) The development of internet based booking tools and travel agency IT. The survey shows differences in views between travel managers, and travellers with regard to corporate travel policies. While travel managers see policy rules, travellers interpret these as guidelines, indicating travel managers will need to take further actions to exercise true control of travel budgets. The data shows that companies are more likely to prescribe a class of airline ticket, than the choice of airline itself. Corporate hierarchical bias in travel policies is still common both for short and particularly long haul flying. Other findings show that while travel managers believe that their companies are likely to sign global deals with strategic airline groups within a five year period in a bid to consolidating spending, they also believe that nearly a third of short haul flying will be taken with low cost carriers, indicating further penetration in this business travel market by these carriers. The paper also provides other predictions about the business travel market, based on the survey findings.

  1. Toxoplasmosis as a travel risk.

    Science.gov (United States)

    Sepúlveda-Arias, Juan C; Gómez-Marin, Jorge E; Bobić, Branko; Naranjo-Galvis, Carlos A; Djurković-Djaković, Olgica

    2014-01-01

    Toxoplasma gondii is a protozoan parasite with worldwide distribution that infects more than one third of the global population. Primary infection in immunocompetent individuals is usually asymptomatic; however, different organs can be affected in immunocompromised individuals leading to the development of encephalitis, myocarditis or pneumonitis. The prevalence of infection with Toxoplasma as well as its genetic structure varies geographically and for that reason travel may be considered as a risk factor to acquire the infection. As toxoplasmosis is a foodborne disease, health care providers should give health education on prevention measures to all prospective travelers in order to decrease the risk of infection in endemic areas. This review presents an overview of the infection with T. gondii with some considerations for travelers to and from endemic zones.

  2. Fundamental Travel Demand Model Example

    Science.gov (United States)

    Hanssen, Joel

    2010-01-01

    Instances of transportation models are abundant and detailed "how to" instruction is available in the form of transportation software help documentation. The purpose of this paper is to look at the fundamental inputs required to build a transportation model by developing an example passenger travel demand model. The example model reduces the scale to a manageable size for the purpose of illustrating the data collection and analysis required before the first step of the model begins. This aspect of the model development would not reasonably be discussed in software help documentation (it is assumed the model developer comes prepared). Recommendations are derived from the example passenger travel demand model to suggest future work regarding the data collection and analysis required for a freight travel demand model.

  3. Elasticity of Long Distance Travelling

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    2011-01-01

    With data from the Danish expenditure survey for 12 years 1996 through 2007, this study analyses household expenditures for long distance travelling. Household expenditures are examined at two levels of aggregation having the general expenditures on transportation and leisure relative to five other...... aggregated commodities at the highest level, and the specific expenditures on plane tickets and travel packages at the lowest level. The Almost Ideal Demand System is applied to determine the relationship between expenditures on transportation and leisure and all other purchased non-durables within...... packages has higher income elasticity of demand than plane tickets but also higher than transportation and leisure in general. The findings within price sensitiveness are not as sufficient estimated, but the model results indicate that travel packages is far more price elastic than plane tickets which...

  4. Travel epidemiology: the Saudi perspective.

    Science.gov (United States)

    Memish, Ziad A; Venkatesh, S; Ahmed, Qanta A

    2003-02-01

    The Kingdom of Saudi Arabia occupies four-fifths of the Arabian Peninsula, with a land area of 2 million square kilometres. Saudi Arabia holds a unique position in the Islamic world, as the custodian of the two holiest places of Islam, in Mecca and Medina. Annually, some 2 million Muslims from over 140 countries embark on Hajj. This extraordinary en masse migration is a unique forum for the study of travel epidemiology since the Hajj carries various health risks, both communicable and non-communicable, often on a colossal scale. Non-communicable hazards of the Hajj include stampede and motor vehicle trauma, fire-related burn injuries and accidental hand injury during animal slaughter. Communicable hazards in the form of outbreaks of multiple infectious diseases have been reported repeatedly, during and following the Hajj. Meningococcal meningitis, gastroenteritis, hepatitis A, B and C, and various zoonotic diseases comprise some of the possible infectious hazards at the Hajj. Many of these infectious and non-infectious hazards can be avoided or averted by adopting appropriate prophylactic measures. Physicians and health personnel must be aware of these risks to appropriately educate, immunize and prepare these travellers facing the unique epidemiological challenges of Hajj in an effort to minimize untoward effects. Travel epidemiology related to the Hajj is a new and exciting area, which offers valuable insights to the travel specialist. The sheer scale of numbers affords a rare view of migration medicine in action. As data is continually gathered and both national and international policy making is tailored to vital insights gained through travel epidemiology, the Hajj will be continually safeguarded. Practitioners will gain from findings of travel related epidemiological changes in evolution at the Hajj: the impact of vaccinating policies, infection control policies and public health are afforded a real-world laboratory setting at each annual Hajj, allowing us to

  5. Value of travel time savings

    DEFF Research Database (Denmark)

    Le Masurier, P.; Polak, J.; Pawlak, Janet

    2015-01-01

    A team of specialist market researchers and Value of Time experts comprising members from SYSTRA, Imperial College London and the Technical University of Denmark has conducted a formal audit and peer review of research undertaken by Arup/ITS Leeds/Accent to derive Value of Travel Time Savings...... Preference (RP) models that were used to derive final Values of Travel Time (VTT). This report contains the findings of our audit and peer review of the procedures adopted by the research team during data collection of the three surveys (SP, RP and Employers Surveys); a peer review of the reported approach...

  6. Black Holes: A Traveler's Guide

    Science.gov (United States)

    Pickover, Clifford A.

    1998-03-01

    BLACK HOLES A TRAVELER'S GUIDE Clifford Pickover's inventive and entertaining excursion beyond the curves of space and time. "I've enjoyed Clifford Pickover's earlier books . . . now he has ventured into the exploration of black holes. All would-be tourists are strongly advised to read his traveler's guide." -Arthur C. Clarke. "Many books have been written about black holes, but none surpass this one in arousing emotions of awe and wonder towards the mysterious structure of the universe." -Martin Gardner. "Bucky Fuller thought big. Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both." -Wired. "The book is fun, zany, in-your-face, and refreshingly addictive." -Times Higher Education Supplement.

  7. Traveling-Wave Membrane Photomixers

    Science.gov (United States)

    Wyss, R. A.; Martin, S. C.; Nakamura, B. J.; Neto, A.; Pasqualini, D.; Siegel, P. H.; Kadow, C.; Gossard, A. C.

    2001-01-01

    Traveling-wave photomixers have superior performance when compared with lumped area photomixers in the 1 to 3 THz frequency range. Their large active area and distributed gain mechanism assure high thermal damage threshold and elimination of the capacitive frequency roll-off. However, the losses experienced by the radio frequency wave traveling along the coplanar strips waveguide (due to underlying semi-infinite GaAs substrate) were a serious drawback. In this paper we present device designs and an experimental setup that make possible the realization of photomixers on membranes which eliminate the losses.

  8. Rabies and Risk to Travelers

    Centers for Disease Control (CDC) Podcasts

    2007-10-01

    Each year over 55,000 people die because of rabies, mostly from being bitten by rabid dogs. Over half of all rabies infections occur in children under the age of 15 who live in developing countries, but travelers are not immune. This podcast discusses some of the activities that put travelers at risk for rabies and describes ways to prevent infection.  Created: 10/1/2007 by National Center for the Prevention, Detection and Control of Infectious Diseases (NCPDCID).   Date Released: 10/5/2007.

  9. Hematospermia in a returned traveler.

    Science.gov (United States)

    Lang, Raynell; Minion, Jessica; Wong, Alexander

    2017-01-01

    Hematospermia is a common complaint among patients seen in outpatient urology clinics. The differential diagnosis is broad and includes inflammatory, infectious, neoplastic, structural, systemic, and traumatic causes. The most common infectious causes are uropathogens and sexually transmitted infections. However, with increasing global travel, physicians must maintain a high clinical suspicion for pathogens not endemic to their region, including Echinococcus, Mycobacterium tuberculosis, and Schistosoma.1 We present a case of hematospermia in a traveler returning from Eastern Africa with exposure to Lake Malawi. The patient's microscopic analysis of semen was positive for Schistosoma haematobium, revealing a rare presentation of S. haematobium infection.

  10. Safe travels? HIV transmission among Britons travelling abroad.

    Science.gov (United States)

    Rice, B; Gilbart, V L; Lawrence, J; Smith, R; Kall, M; Delpech, V

    2012-05-01

    The aim of the study was to identify and describe the characteristics of persons born in the UK who acquire HIV infection abroad. Analyses using case reports and follow-up data from the national HIV database held at the Health Protection Agency were performed. Fifteen per cent (2066 of 13 891) of UK-born adults diagnosed in England, Wales and Northern Ireland between 2002 and 2010 acquired HIV infection abroad. Thailand (534), the USA (117) and South Africa (108) were the countries most commonly reported. As compared with UK-born adults acquiring HIV infection in the UK, those acquiring HIV infection abroad were significantly (P sex with a commercial sex worker (5.6% vs. 1%, respectively). Among men infected in Thailand, 11% reported sex with a commercial sex worker. A substantial number of UK-born adults are acquiring HIV infection in countries with generalized HIV epidemics, and in common holiday destinations. Of particular concern is the high proportion of men infected reporting sex with a commercial sex worker. We recommend HIV prevention and testing efforts be extended to include travellers abroad, and that sexual health advice be provided routinely in travel health consultations and in occupational health travel advice packs, particularly to those travelling to high HIV prevalence areas and destinations for sex tourism. Safer sex messages should include an awareness of the potential detrimental health and social impacts of the sex industry. © 2012 British HIV Association.

  11. Travelers' Health: Traveling Safely with Infants and Children

    Science.gov (United States)

    ... be used with caution in the presence of children to avoid burns and inadvertent ingestion. For more information about repellent ... above. These seats often must be carried from home, since availability of ... abroad. In general, children are safest traveling in the rear seat; no ...

  12. To Pergamon and back. An account of a Homeric voyage, with observations on the beliefs and practices of fellow travellers and natives

    Science.gov (United States)

    Shaw, Denis M.

    1988-12-01

    Many undertake the journey to Pergamon, and live to tell their grandchildren of privations suffered, hardships overcome, brigands repelled and the like. Few comment on the reasons why they chose to make the voyage, what investment was made to ensure the seaworthiness of the vessel, what time was spent in detached reflection to guarantee the quality of the goods carried, what outcome in spiritual fortification was hoped for, what gifts were prepared for the benefit (in fruitful intercourse) of other voyagers, natives, and sailors. Using the premise that (with apologies to Plato) "the unexamined voyage is not worth taking", some cheerful discourse is offered for past and future travellers. In accord with one of the few truths in science, namely that "all meeting abstracts are bad abstracts", the reader is left to muse on what really was presented.

  13. The influence of Plato, Aristotle, and the ancient Polis on a programme for congenital cardiac surgery: the virtuous partnership.

    Science.gov (United States)

    Mavroudis, Constantine; Backer, Carl L

    2007-09-01

    The problems that exist in maintaining a partnership in paediatric cardiac surgery are considerable. They relate to fairness in allocation of time for leisure, the apportioning of cases between the partners, internal competition between them, financial considerations, and promotion of the ego. In this review, we discuss our own experiences in maintaining a partnership over a period of more than 18 years, relating such a "virtuous partnership" to the writings of Plato and Aristotle, and setting it against the tenets of the ancient Greek polis. The polis, or city state, came to prominence in ancient Greece during the golden age of Pericles, this period seeing the initial evolution of Western philosophy, as well as numerous other scientific, artistic and architectural advances. The concept of the polis was to create a natural association with its citizens that nurtured all that is best in people, at the same time defining their character. In this respect, according to Plato, the person and the polis are mirror images. Aristotle then expanded this notion to incorporate the various forms of friendship, which he pointed out last only as long as the interrelated pleasure survives. Using these principles as the point of departure, we argue that cardiac surgeons should respect moral virtue in each other. Extending this process means that we should also respect, and celebrate, our relationships with affiliated physicians, nurses, perfusionists, administrators, and all concerned in the care of children with congenitally malformed hearts. In this way, we create a virtuous partnership for congenital cardiac surgery that promotes all that was good, as engendered in the ancient Greek polis. As we extend these observations to the modern world, we discuss some of the features that have permitted us to work so well together. One of the most important is a summoning and unwritten tenet that greets us as we enter the operating room, namely "check your ego at the door". The operative

  14. Environmental Impact of Long Distance Travel

    DEFF Research Database (Denmark)

    Christensen, Linda

    2016-01-01

    This paper presents an analysis of the CO2 emission resulting from long distance travel by Danes. The emissions are analysed as the Danes’ footprint the whole way from Denmark to the final destination. International travel represents 31% of the Danes’ CO2 emission from passenger travel and the cl......This paper presents an analysis of the CO2 emission resulting from long distance travel by Danes. The emissions are analysed as the Danes’ footprint the whole way from Denmark to the final destination. International travel represents 31% of the Danes’ CO2 emission from passenger travel...... and the climate burden from long overseas distances is especially high even though only few travel overseas. The travel activity is furthermore increasing much more for long distances than for European destinations. Domestic travel activity with overnight stay is nearly stagnating. The study furthermore shows...

  15. Mobile Marketing Applications of Travel Agencies

    Directory of Open Access Journals (Sweden)

    Murat Selim Selvi

    2014-11-01

    Full Text Available In recent years, the use of mobile devices in the marketing world is increasing parallel with technological advances. The main problem of this research is to determine agencies’ use of what type of mobile tools for what type of purposes in the marketing process. The aim of this research is to identify Mobile Marketing (MM applications used by group A travel agencies, and to describe the attitudes towards MM applications of agencies. According to related law, it is only group A agencies give all agency services. Therefore, it is thought that MM is more widely used by those agencies. Thus, this research was made only on the group A agencies. The population of study was consisted of 675 groups A agencies’ representatives deployed in the European and Asian sides of Istanbul. A questionnaire was used as data collection tool. Questionnaire form consisted of two parts. In the first part, questions concerning MM and in the second part, questions regarding demographic issues to managers and travel agents took place. The results were given as descriptive statistics (frequencies, percentages, mean and standard deviation on the tables. T-test and One Way ANOVA analysis were performed for the differences of mean among groups. In the study it was concluded that agencies use mobile phones mostly and mobile computers for increasing sales firstly and direct marketing. Thus, the main hypothesis established was confirmed partly.

  16. Mobile Marketing Applications of Travel Agencies

    Directory of Open Access Journals (Sweden)

    Murat Selim Selvi

    2016-01-01

    Full Text Available In recent years, the use of mobile devices in the marketing world is increasing parallel with technological advances. The main problem of this research is to determine agencies’ use of what type of mobile tools for what type of purposes in the marketing process. The aim of this research is to identify Mobile Marketing (MM applications used by group A travel agencies, and to describe the attitudes towards MM applications of agencies. According to related law, it is only group A agencies give all agency services. Therefore, it is thought that MM is more widely used by those agencies. Thus, this research was made only on the group A agencies. The population of study was consisted of 675 groups A agencies’ representatives deployed in the European and Asian sides of Istanbul. A questionnaire was used as data collection tool. Questionnaire form consisted of two parts. In the first part, questions concerning MM and in the second part, questions regarding demographic issues to managers and travel agents took place. The results were given as descriptive statistics (frequencies, percentages, mean and standard deviation on the tables. T-test and One Way ANOVA analysis were performed for the differences of mean among groups. In the study it was concluded that agencies use mobile phones mostly and mobile computers for increasing sales firstly and direct marketing. Thus, the main hypothesis established was confirmed partly.

  17. Social media in travel medicine: a review.

    Science.gov (United States)

    Patel, Dipti; Jermacane, Daiga

    2015-01-01

    The use of social media is widespread and provides new opportunities for healthcare professionals and healthcare organisations to interact with patients, the public, policy makers, and each other. Social media offers the possibility of providing users with up-to-date information when, where, and how they want it, but it also brings with it some challenges. With increasing use of social media, there is potential to change the way travel medicine is delivered; practitioners should consider how to exploit the benefits in their practice, and not be afraid to experiment. However they need to be cognizant of the potential pitfalls. The information exchanged requires careful application as it may not always achieve the desired outcome, it needs to be monitored for quality, accuracy, and reliability, and confidentiality and privacy must be maintained. Most importantly, as social media becomes more sophisticated and widely adopted in the healthcare arena, further evaluation and research is required to understand its impact and its application to travel medicine.

  18. An overview: tularemia and travel medicine.

    Science.gov (United States)

    Ulu-Kilic, Aysegul; Doganay, Mehmet

    2014-01-01

    Tularemia is a bacterial zoonotic infection. The disease is endemic in most parts of the world, has been reported through the northern hemisphere between 30 and 71° N latitude. Francisella tularensis causes infection in a wide range of vertebrates (rodents, lagomorphs) and invertebrates (ticks, mosquitoes and other arthropods). Humans can acquire this infection through several routes including; a bite from an infected tick, deerfly or mosquito, contact with an infected animal or its dead body. It can also be spread to human by drinking contaminated water or breathing contaminated dirt or aerosol. Clinical manifestation of this disease varies depending on the biotype, inoculum and port of entry. Infection is potentially life threatening, but can effectively be treated with antibiotics. Travelers visiting rural and agricultural areas in endemic countries may be at greater risk. Appropriate clothing and use of insect repellants is essential to prevent tick borne illness. Travelers also should be aware of food and waterborne disease; avoid consuming potentially contaminated water and uncooked meat. Physicians should be aware of any clinical presentation of tularemia in the patients returning from endemic areas.

  19. Image Fusion for Travel Time Tomography Inversion

    Directory of Open Access Journals (Sweden)

    Liu Linan

    2015-09-01

    Full Text Available The travel time tomography technology had achieved wide application, the hinge of tomography was inversion algorithm, the ray path tracing technology had a great impact on the inversion results. In order to improve the SNR of inversion image, comprehensive utilization of inversion results with different ray tracing can be used. We presented an imaging fusion method based on improved Wilkinson iteration method. Firstly, the shortest path method and the linear travel time interpolation were used for forward calculation; then combined the improved Wilkinson iteration method with super relaxation precondition method to reduce the condition number of matrix and accelerate iterative speed, the precise integration method was used to solve the inverse matrix more precisely in tomography inversion process; finally, use wavelet transform for image fusion, obtain the final image. Therefore, the ill-conditioned linear equations were changed into iterative normal system through two times of treatment and using images with different forward algorithms for image fusion, it reduced the influence effect of measurement error on imaging. Simulation results showed that, this method can eliminate the artifacts in images effectively, it had extensive practical significance.

  20. Traveling, Writing and Engagement in Robyn Davidson’s Tracks

    Directory of Open Access Journals (Sweden)

    Magali Sperling Beck

    2016-06-01

    Full Text Available http://dx.doi.org/10.5007/2175-8026.2016v69n2p93 In 1980, Australian writer Robyn Davidson publishes her travel narrative Tracks, in which she describes her crossing of the central Australian deserts in the late 1970’s, on foot and by herself, being accompanied only by her dog and by four camels. The narrative became an immediate success after its publication, receiving the Thomas Cook Travel Book Award, and been widely read both in Australia and worldwide. It has also become an emblematic example of contemporary travel narratives, mainly due to the fact that it is not only a book about survival or about a woman crossing a desert alone, rather elaborating on the implications between genre and gender; it is also a narrative that recuperates the political and ideological background of an important moment in Australian history. Thus, taking into consideration Davidson’s ambivalence in relation to writing about her travel experiences, in this paper, I argue that Tracks, more than celebrating the process of self-transformation in travel, lingers on the tension between its narrator’s search for freedom and her awareness regarding the responsibilities involved in engaging with cultural difference and in representing geographical crossings.

  1. A generic travelling wave solution in dissipative laser cavity

    Indian Academy of Sciences (India)

    BALDEEP KAUR; SOUMENDU JANA

    2016-10-01

    A large family of cosh-Gaussian travelling wave solution of a complex Ginzburg–Landau equation (CGLE), that describes dissipative semiconductor laser cavity is derived. Using perturbation method, the stability region is identified. Bifurcation analysis is done by smoothly varying the cavity loss coefficient to provide insight of the system dynamics. He’s variational method is adopted to obtain the standard sech-type and the notso-explored but promising cosh-Gaussian type, travelling wave solutions. For a given set of system parameters, only one sech solution is obtained, whereas several distinct solution points are derived for cosh-Gaussian case. These solutions yield a wide variety of travelling wave profiles, namely Gaussian, near-sech, flat-top and a cosh-Gaussian with variable central dip. A split-step Fourier method and pseudospectral method have been used for direct numerical solution of the CGLE and travelling wave profiles identical to the analytical profiles have been obtained. We also identified the parametric zone that promises an extremely large family of cosh-Gaussian travelling wave solutions with tunable shape. This suggests that the cosh-Gaussian profile is quite generic and would be helpful for further theoretical as well as experimental investigation on pattern formation, pulse dynamics and localization in semiconductor laser cavity.

  2. The value of travel time variance

    OpenAIRE

    Fosgerau, Mogens; Engelson, Leonid

    2010-01-01

    This paper considers the value of travel time variability under scheduling preferences that are de�fined in terms of linearly time-varying utility rates associated with being at the origin and at the destination. The main result is a simple expression for the value of travel time variability that does not depend on the shape of the travel time distribution. The related measure of travel time variability is the variance of travel time. These conclusions apply equally to travellers who can free...

  3. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2009-01-01

    We are pleased to inform our customers that the range of tourist guides and roadmaps on sale in our offices has now been extended. We aim to help you prepare your upcoming holiday or business trip in any way we can. Please do not hesitate to contact us should you need any further information. The team at CARLSON WAGONLIT TRAVEL

  4. Writing Travel in the Anthropocene

    DEFF Research Database (Denmark)

    Graulund, Rune

    2016-01-01

    by a rapid increase in the mobility of people, goods and information, but primarily examine the impact of the Anthropocene on the notion of travel. For in a world in which the peak of Mount Everest is littered with toilet paper and the Great Pacific Garbage Patch is potentially twice the size of the US...

  5. A Travel To Hong Kong

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    This summer holiday,I had travelled to Hong Kong with many other students.We went to Hong Kong by plane.Hong Kong is very small,but there are many people living there. In Hong Kong,all of the buildings are very tall.There are lots of shops there and

  6. Twitter for travel medicine providers.

    Science.gov (United States)

    Mills, Deborah J; Kohl, Sarah E

    2016-03-01

    Travel medicine practitioners, perhaps more so than medical practitioners working in other areas of medicine, require a constant flow of information to stay up-to-date, and provide best practice information and care to their patients. Many travel medicine providers are unaware of the popularity and potential of the Twitter platform. Twitter use among our travellers, as well as by physicians and health providers, is growing exponentially. There is a rapidly expanding body of published literature on this information tool. This review provides a brief overview of the ways Twitter is being used by health practitioners, the advantages that are peculiar to Twitter as a platform of social media, and how the interested practitioner can get started. Some key points about the dark side of Twitter are highlighted, as well as the potential benefits of using Twitter as a way to disseminate accurate medical information to the public. This article will help readers develop an increased understanding of Twitter as a tool for extracting useful facts and insights from the ever increasing volume of health information. © International Society of Travel Medicine, 2016. All rights reserved. Published by Oxford University Press. For permissions, please e-mail: journals.permissions@oup.com.

  7. CITM: Asian's Largest Travel Show

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ Jointly hosted by China National Tourism Administration, Yunnan Provincial People's Government and General Administration of Civil Aviation of China, China International Travel Mart (CITM) is a major step to develop inbound tourism, to increase tourism receipts in foreign exchanges, and to enhance the international status of China's tourism industry.

  8. Bacterial infec tions in travellers

    African Journals Online (AJOL)

    This review will concentrate on common infections, namely bacterial ... as pyrexia of unknown origin. ... cause of fever without lung involvement (Pontiac fever). Gram- negative ... Frequent use of DEET-based insect repel- lants .... No firm evidence for chemoprophylaxis, but some studies show benefit in short-term travellers.

  9. Your Travel Dollar. Money Management.

    Science.gov (United States)

    Baran, Nancy H., Ed.

    This illustrated guide was designed to familiarize consumers with planning a vacation trip, whether domestic or abroad. The guide covers setting up a budget; package tours; cruises and charter flights; travel agencies and clubs; and arranging stays in hotels/motels, rental condominiums, bed-and-breakfasts, hostels, campsites, and private…

  10. Time Travel in the Library

    Science.gov (United States)

    Brown, Donna W.

    2005-01-01

    A Time Travel project in the library gives enthusiasm to students to connect with the past and reinforces their research skills while instilling respect for the past years. The librarian should choose one specific decade to highlight in the library and create an extravaganza that would allow memorabilia from that time period to be located without…

  11. Travel to the Rio Olympics

    Centers for Disease Control (CDC) Podcasts

    2016-07-21

    Learn how to stay healthy and safe when travelling to the 2016 Olympic Games in Rio de Janeiro.  Created: 7/21/2016 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 7/21/2016.

  12. Danish travel activities: do we travel more and longer – and to what extent?

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    Two separate Danish National travel surveys are analysed to outline the amount and extent of national and international travelling during the latest 15-20 years; the national travel survey (TU) describes mainly national daily travel activities, whereas the holiday and business travel survey...... describes national and international travel activities including overnight stay(s). When sampling only respondents with trips above 100 kilometres, they only accounts for around 2% of all daily travel activities, however, this share appears to increase and suggest in general that we do travel longer....... But due to this limited share of trips, the overall impacts of longer distance travelling vanish when considering all daily travel activities. Especially as about 95% of all daily travel destinations range less than 50 kilometres away and in total induce an average trip length of 20 kilometres. If focus...

  13. Network structure and travel time perception.

    Science.gov (United States)

    Parthasarathi, Pavithra; Levinson, David; Hochmair, Hartwig

    2013-01-01

    The purpose of this research is to test the systematic variation in the perception of travel time among travelers and relate the variation to the underlying street network structure. Travel survey data from the Twin Cities metropolitan area (which includes the cities of Minneapolis and St. Paul) is used for the analysis. Travelers are classified into two groups based on the ratio of perceived and estimated commute travel time. The measures of network structure are estimated using the street network along the identified commute route. T-test comparisons are conducted to identify statistically significant differences in estimated network measures between the two traveler groups. The combined effect of these estimated network measures on travel time is then analyzed using regression models. The results from the t-test and regression analyses confirm the influence of the underlying network structure on the perception of travel time.

  14. 49 CFR 229.55 - Piston travel.

    Science.gov (United States)

    2010-10-01

    ..., DEPARTMENT OF TRANSPORTATION RAILROAD LOCOMOTIVE SAFETY STANDARDS Safety Requirements Brake System § 229.55 Piston travel. (a) Brake cylinder piston travel shall be sufficient to provide brake shoe clearance...

  15. Vegan travel- The ways how vegan diet influences travel experience.

    OpenAIRE

    Kansanen, Iiris

    2013-01-01

    Following a certain diet may create challenges when dining out, let alone when travelling to another country, where language barriers and cultural differences can set certain difficulties. Veganism is ideology based diet in which a person excludes all the animalia based products from the diet. The most common reason for veganism is animal rights, however also health, nature and other reasons are likely. This thesis has been commissioned by Vegaaniliitto ry (Finnish Vegan Society) and is a...

  16. A travelers' clinic in an academic setting.

    OpenAIRE

    Cordes, D H; Baca, C T; Grant, K. J.

    1989-01-01

    The Department of Family and Community Medicine at the University of Arizona has operated a travelers' clinic since 1983, staffed primarily by faculty and residents from the sections of preventive medicine, occupational medicine, and family medicine. We describe the clinic experience in providing preventive medical services to international travelers. Summer months are the busiest. Destinations of the travelers show a clear predominance of travel to less-developed countries, and this is refle...

  17. FACTORS INFLUENCING THE EVOLUTION OF YOUTH TRAVEL

    Directory of Open Access Journals (Sweden)

    Student Claudia MOISĂ

    2010-01-01

    Full Text Available Youth travel is an important part of global tourism, consequently, getting to know the evolution of this form of tourism requires an approach of the aspects regarding the permissive and restrictive factors that influence the youth travel dynamic worldwide. In terms of the factors that influence youth travel, we highlighted these two categories of factors (permissive and restrictive and, within each category, we tried to singularize the influence of every factor over youth travel.

  18. Psychological Aspects of Travel Information Presentation

    NARCIS (Netherlands)

    Dicke-Ogenia, M.

    2012-01-01

    Congestion on road networks causes severe problems in and around large cities. Consequences of congestion include an increase in travel time and travel costs, environmental costs, economic costs, increased energy use and decreased economic growth, reduced travel time reliability, and reduced quality

  19. Travelling 'green': Is tourists' happiness at stake?

    NARCIS (Netherlands)

    J. Nawijn (Jeroen); P.M. Peeters (Paul)

    2010-01-01

    textabstractSeveral western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the

  20. Travel related diseases and optimizing preventive strategies

    NARCIS (Netherlands)

    Wieten, R.W.

    2016-01-01

    With the figure of 1 billion annual travellers continuously increasing, travel is becoming more and more common. The binding element of this thesis is the aim to contribute to the improvement of pre-travel healthcare. The diseases studied either carry a high mortality (rabies, malaria, yellow fever)

  1. 5 CFR 630.207 - Travel time.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Travel time. 630.207 Section 630.207 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS ABSENCE AND LEAVE Definitions and General Provisions for Annual and Sick Leave § 630.207 Travel time. The travel time granted an...

  2. Travelling 'green': is tourists' happiness at stake?

    NARCIS (Netherlands)

    Nawijn, J.; Peeters, P.M.

    2010-01-01

    Several western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the average tourist

  3. Travelling 'green': Is tourists' happiness at stake?

    NARCIS (Netherlands)

    J. Nawijn (Jeroen); P.M. Peeters (Paul)

    2010-01-01

    textabstractSeveral western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the ave

  4. Recommended vaccines for international travelers to India.

    Science.gov (United States)

    Verma, Ramesh; Khanna, Pardeep; Chawla, Suraj

    2015-01-01

    India's tourism industry generated 6.6% of the nation's Gross Domestic Product (GDP) during 2012. International travel to India is predicted to grow at an average annual rate of ∼ 8% over the next decade. The number of foreign tourists has increased by 9% to 5.8 million. Approximately 8% of travelers to developing countries require medical care during or after travel; the main diagnoses are vaccine-preventable diseases. Travelers to India can be exposed to various infectious diseases; water-borne, water-related, and zoonotic diseases may be imported to India where the disease is not endemic. The World Health Organization (WHO) emphasizes that all international travelers should be up to date with routine vaccinations. The recommended vaccinations for travelers to India vary according to the traveler's age, immunization history, existing medical conditions, duration, legal requirements for entry into countries being visited, travelers preferences, and values. Travelers should consult with a doctor so that there is sufficient time for completion of optimal vaccination schedules. No matter where traveling, one should be aware of potential exposure to certain organisms that can cause severely illnesses, even death. There is no doubt that vaccines have reduced or virtually eliminated many diseases that killed or severely disabled children and adults just a few generations ago. Thus, travelers must take recommended vaccines per schedule before traveling to India.

  5. 38 CFR 60.5 - Travel.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Travel. 60.5 Section 60.5... TEMPORARY LODGING § 60.5 Travel. As a condition for receiving temporary lodging under this part, a veteran must be required to travel either 50 or more miles, or at least two hours from his or her home to...

  6. Business Travellers Vote DRAGONAIR "Best China Airline"

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

      (BEIJING) Dragonair was announced as winner of the Best China Airline category in the Business Traveller Asia-Pacific 2005 Annual Travel Awards today. The magazine asked subscribers who were frequent travellers to vote for an airline based on 17 criteria,including cabin staff, comfort, route network and scheduling.……

  7. The Traveler with Sickle Cell Disease

    Science.gov (United States)

    Willen, Shaina M.; Thornburg, Courtney D.; Lantos, Paul M.

    2014-01-01

    Background Sickle cell disease (SCD) is the most common genetic disease among persons with African ancestry. This article provides a background on SCD and reviews many important aspects of travel preparation in this population. Methods The medical literature was searched for studies about travel-associated preparedness and complications in individuals with SCD. Topics researched included malaria, bacterial infections, vaccinations, dehydration, altitude, air travel, and travel preparedness. Results There is very little published literature that specifically addresses the risks faced by travelers with SCD. Rates of medical complications during travel appear to be high. There is a body of literature that describes complications of SCD in indigenous populations, particularly within Africa. The generalizability of these data to a traveler are uncertain. Combining these sources of data and the broader medical literature we address major travel-related questions that may face a provider preparing an individual with SCD for safe travel. Conclusions Travelers with SCD face considerable medical risks when traveling to developing tropical countries; these include malaria, bacterial infections, hypovolemia, and sickle cell-associated vaso-occlusive crises. Frank counseling about risks, vigilant preventative measures, and contingency planning for illness while abroad are necessary parts of the pre-travel visit for individuals with SCD. PMID:24947546

  8. Acute Chagas Disease in a Returning Traveler

    Science.gov (United States)

    Carter, Yvonne L.; Juliano, Jonathan J.; Montgomery, Susan P.; Qvarnstrom, Yvonne

    2012-01-01

    Acute Chagas disease is rarely recognized, and the risk for acquiring the disease is undefined in travelers to Central America. We describe a case of acute Chagas disease in a traveler to Costa Rica and highlight the need for increased awareness of this infection in travelers to Chagas-endemic areas. PMID:23091192

  9. Family structure and its relationship to travel

    Science.gov (United States)

    Christine Cornell McCreedy; Joseph T. O' Leary; Daniel Fesenmaier

    1992-01-01

    This paper examines the relationship between family structure and travel to further understand what differences exist between family groups. Results indicate that the absence of a husband delays travel for single mothers and that they are not as well-off as their married counterparts. We examine other travel and leisure studies to make comparisons with these data,...

  10. Psychological Aspects of Travel Information Presentation

    NARCIS (Netherlands)

    Dicke-Ogenia, M.

    2012-01-01

    Congestion on road networks causes severe problems in and around large cities. Consequences of congestion include an increase in travel time and travel costs, environmental costs, economic costs, increased energy use and decreased economic growth, reduced travel time reliability, and reduced quality

  11. [Cyclospora cayetanensis outbreak in travelers to Cuba].

    Science.gov (United States)

    Ramírez-Olivencia, Germán; Herrero, Maria Dolores; Subirats, Mercedes; Rivas González, Pablo; Puente, Sabino

    2008-11-01

    Initially described in travelers, outbreaks of cyclosporiasis were soon linked to imported food products. An outbreak of cyclosporiasis in Spanish travelers is described. After identification of Cyclospora cayetanensis in stool analyses, a specific questionnaire was completed. Pyrosis was described in 57% of cases (4/7). Peptic symptoms can be a useful clue to indicate the diagnosis of cyclosporiasis in patients with travelers' diarrhea.

  12. Business Travellers Vote DRAGONAIR "Best China Airline"

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ (BEIJING) Dragonair was announced as winner of the Best China Airline category in the Business Traveller Asia-Pacific 2005 Annual Travel Awards today. The magazine asked subscribers who were frequent travellers to vote for an airline based on 17 criteria,including cabin staff, comfort, route network and scheduling.

  13. Discounts at the Carlson Wagonlit travel agency

    CERN Multimedia

    2008-01-01

    The Carlson Wagonlit travel agency is offering exceptional discounts of up to 40% for bookings with M-Travel before 29 February 2008 and Helvetic Tours before 30 March 2008. For terms and conditions and further information please contact the CERN Carlson Wagonlit Travel office, Main Building (500), Tel. 72763.

  14. Misrepresentation of vital status follow-up: challenging the integrity of the PLATO trial and the claimed mortality benefit of ticagrelor versus clopidogrel.

    Science.gov (United States)

    DiNicolantonio, James J; Tomek, Ales

    2013-10-30

    Ticagrelor, a novel, reversible, and oral P2Y12 receptor antagonist, was claimed to reduce all-cause mortality compared to clopidogrel in the PLATO trial. We sought to ascertain vital status follow-up for clopidogrel and ticagrelor to determine if any discrepancy existed by reviewing data from the FDA Complete Response Review. The FDA Complete Response Review indicated misrepresentation of vital status follow-up by the sponsor's presenter at the Cardiovascular and Renal Drugs Advisory Committee. Instead of five patients with missing vital status follow-up, the FDA primary efficacy reviewer indicated that there was a minimum of 106 patients. Additionally and more concerning was the fact that significantly more patients on ticagrelor (3.1%, n = 289 patients) had incomplete vital status follow-up versus clopidogrel (2.6%, n = 242 patients, p = 0.04 for the difference). The Advisory Committee that voted in favor to approve ticagrelor was given misrepresented data, which may have affected the approval of ticagrelor. The fact that significantly more patients on ticagrelor had incomplete vital status follow-up versus clopidogrel challenges the claimed mortality benefit of ticagrelor and the approval of the PLATO trial. © 2013 Elsevier Ireland Ltd. All rights reserved.

  15. Proporción y autoría. Arte mueble paleolítico. Figuras de los Omóplatos de

    Directory of Open Access Journals (Sweden)

    José Antonio Fernández Lombera

    2003-01-01

    Full Text Available El trabajo se compone de las siguientes partes : a.- Realización de calcos con una gran objetividad gráfica de las figuras grabadas en los omóplatos de El Castillo, exhumados por OBERMAIER en sus campañas de 1911/12. b.- Diseño, validación y aplicación de un método para el cálculo de la proporción de una figura, independoentemente de cuál sea, enfrentándola a un arquetipo. c.- Aplicación de tal método, una vez validado, a las figuras de los omóplatos de El Castillo. d.- Análisis de la manera de hacer de cada uno de los autores de las figuras de El Castillo ; es a lo que llamamos autoría. e.- Obtención de un conjunto de conclusiones de tipo formal, artístico y paleoetnológico

  16. Plasma Colloquium Travel Grant Program

    Energy Technology Data Exchange (ETDEWEB)

    Hazeltine, R.D.

    1998-09-14

    OAK B188 Plasma Colloquium Travel Grant Program. The purpose of the Travel Grant Program is to increase the awareness of plasma research. The new results and techniques of plasma research in fusion plasmas, plasma processing space plasmas, basic plasma science, etc, have broad applicability throughout science. The benefits of these results are limited by the relatively low awareness and appreciation of plasma research in the larger scientific community. Whereas spontaneous interactions between plasma scientists and other scientists are useful, a focused effort in education and outreach to other scientists is efficient and is needed. The academic scientific community is the initial focus of this effort, since that permits access to a broad cross-section of scientists and future scientists including undergraduates, graduate students, faculty, and research staff.

  17. Multiply Phased Traveling BPS Vortex

    CERN Document Server

    Kimm, Kyoungtae; Cho, Y M

    2016-01-01

    We present the multiply phased current carrying vortex solutions in the U(1) gauge theory coupled to an $(N+1)$-component SU(N+1) scalar multiplet in the Bogomolny limit. Our vortex solutions correspond to the static vortex dressed with traveling waves along the axis of symmetry. What is notable in our vortex solutions is that the frequencies of traveling waves in each component of the scalar field can have different values. The energy of the static vortex is proportional to the topological charge of $CP^N$ model in the BPS limit, and the multiple phase of the vortex supplies additional energy contribution which is proportional to the Noether charge associated to the remaining symmetry.

  18. TRAVEL IN THE SCHENGEN AREA

    CERN Multimedia

    Relations with the Host States Service

    2001-01-01

    You are reminded that holders of French residence permits (for example, the carte spéciale issued by the French Ministry of Foreign Affairs, a resident's card, a temporary residence card or a receipt issued during the renewal of such residence documents) do not need visas for tourist travel (including conferences) to countries applying the provisions of the Schengen Convention, provided that the duration of the travel is less than three months. The countries applying the provisions of the Schengen Convention are Austria, Belgium, France, Germany, Greece, Italy, Luxembourg, the Netherlands, Portugal and Spain; and since 25 March 2001 Denmark, Finland, Iceland, Norway and Sweden. For longer stays and for other than tourist visits, you are strongly advised to make enquiries at the relevant consulates.http://www.cern.ch/relations/

  19. Travel intermediaries and responsibility for compliance with EU travel law : A scattered legal picture

    NARCIS (Netherlands)

    de Vries, Anne

    2016-01-01

    Travel intermediaries, commonly known as travel agencies, are important and well-known actors in the travel sector and online travel agencies such as Expedia, Booking.com and AirBnB are booming. Although intermediaries obviously bring clear benefits for contracting parties, they also complicate the

  20. Travel intermediaries and responsibility for compliance with EU travel law : A scattered legal picture

    NARCIS (Netherlands)

    de Vries, Anne

    2016-01-01

    Travel intermediaries, commonly known as travel agencies, are important and well-known actors in the travel sector and online travel agencies such as Expedia, Booking.com and AirBnB are booming. Although intermediaries obviously bring clear benefits for contracting parties, they also complicate the

  1. On the relationship between travel time and travel distance in the Netherlands

    NARCIS (Netherlands)

    Rietveld, P.; Zwart, B.; van Wee, B.; van der Hoorn, A.I.J.M.

    1999-01-01

    This paper gives a detailed empirical analysis of the relationships between different indicators of costs of commuting trips by car: difference as the crow flies, shortest travel time according to route planner, corresponding travel distance, and reported travel time. Reported travel times are

  2. On the relationship between travel time and travel distance in the Netherlands

    NARCIS (Netherlands)

    Rietveld, P.; Zwart, B.; van Wee, B.; van der Hoorn, A.I.J.M.

    1999-01-01

    This paper gives a detailed empirical analysis of the relationships between different indicators of costs of commuting trips by car: difference as the crow flies, shortest travel time according to route planner, corresponding travel distance, and reported travel time. Reported travel times are usual

  3. Travel Software using GPU Hardware

    CERN Document Server

    Szalwinski, Chris M; Dimov, Veliko Atanasov; CERN. Geneva. ATS Department

    2015-01-01

    Travel is the main multi-particle tracking code being used at CERN for the beam dynamics calculations through hadron and ion linear accelerators. It uses two routines for the calculation of space charge forces, namely, rings of charges and point-to-point. This report presents the studies to improve the performance of Travel using GPU hardware. The studies showed that the performance of Travel with the point-to-point simulations of space-charge effects can be speeded up at least 72 times using current GPU hardware. Simple recompilation of the source code using an Intel compiler can improve performance at least 4 times without GPU support. The limited memory of the GPU is the bottleneck. Two algorithms were investigated on this point: repeated computation and tiling. The repeating computation algorithm is simpler and is the currently recommended solution. The tiling algorithm was more complicated and degraded performance. Both build and test instructions for the parallelized version of the software are inclu...

  4. Minimum Covering with Travel Cost

    CERN Document Server

    Fekete, Sandor P; Schmidt, Christiane

    2011-01-01

    Given a polygon and a visibility range, the Myopic Watchman Problem with Discrete Vision (MWPDV) asks for a closed path P and a set of scan points S, such that (i) every point of the polygon is within visibility range of a scan point; and (ii) path length plus weighted sum of scan number along the tour is minimized. Alternatively, the bicriteria problem (ii') aims at minimizing both scan number and tour length. We consider both lawn mowing (in which tour and scan points may leave P) and milling (in which tour, scan points and visibility must stay within P) variants for the MWPDV; even for simple special cases, these problems are NP-hard. We show that this problem is NP-hard, even for the special cases of rectilinear polygons and L_\\infty scan range 1, and negligible small travel cost or negligible travel cost. For rectilinear MWPDV milling in grid polygons we present a 2.5-approximation with unit scan range; this holds for the bicriteria version, thus for any linear combination of travel cost and scan cost. F...

  5. The Out-bound and In-bound Travelling Market

    Institute of Scientific and Technical Information of China (English)

    Emily Yu

    2009-01-01

    @@ As the Spring Festival of China with a long vocation of seven days nationally is approaching,more and more attention is paid to the out-bound and inn-bound trayeling market.Will people hold their pockets firmly in the"cold winter"of world-wide financial crisis,or will they grab the great discount of traveling and take a good relax?

  6. Traveling and Standing Waves in Coupled Pendula and Newton's Cradle

    Science.gov (United States)

    García-Azpeitia, Carlos

    2016-12-01

    The existence of traveling and standing waves is investigated for chains of coupled pendula with periodic boundary conditions. The results are proven by applying topological methods to subspaces of symmetric solutions. The main advantage of this approach comes from the fact that only properties of the linearized forces are required. This allows to cover a wide range of models such as Newton's cradle, the Fermi-Pasta-Ulam lattice, and the Toda lattice.

  7. New travelling wave solutions for nonlinear stochastic evolution equations

    Indian Academy of Sciences (India)

    Hyunsoo Kim; Rathinasamy Sakthivel

    2013-06-01

    The nonlinear stochastic evolution equations have a wide range of applications in physics, chemistry, biology, economics and finance from various points of view. In this paper, the (′/)-expansion method is implemented for obtaining new travelling wave solutions of the nonlinear (2 + 1)-dimensional stochastic Broer–Kaup equation and stochastic coupled Korteweg–de Vries (KdV) equation. The study highlights the significant features of the method employed and its capability of handling nonlinear stochastic problems.

  8. Destination image and crime in Mexico: An analysis of foreign government travel advice

    Directory of Open Access Journals (Sweden)

    J. Carlos Monterrubio

    2013-07-01

    Full Text Available Destination image has been recognised as an influential component of travel decision processes. Although organic sources of information play an important role in shaping destination image, researchers have often ignored the types of sources and the information they deliver. In particular, official websites where government travel advice is given, especially in relation to crime, have been widely excluded from scholarly research. This paper analyses the relationship between crime-related travel advice given by foreign governments and Mexico’s destination image. Qualitative content analysis of official websites from the US, Canada, the UK and Spain reveals that the travel advice given relates largely to the violence and insecurity that Mexico is currently experiencing. “No advisory in effect”, “Exercise caution” and “Defer non-essential travel” are messages commonly found in the governments’ travel advice about Mexico.

  9. Robust user equilibrium model based on cumulative prospect theory under distribution-free travel time

    Institute of Scientific and Technical Information of China (English)

    王伟; 孙会君; 吴建军

    2015-01-01

    The assumption widely used in the user equilibrium model for stochastic network was that the probability distributions of the travel time were known explicitly by travelers. However, this distribution may be unavailable in reality. By relaxing the restrictive assumption, a robust user equilibrium model based on cumulative prospect theory under distribution-free travel time was presented. In the absence of the cumulative distribution function of the travel time, the exact cumulative prospect value (CPV) for each route cannot be obtained. However, the upper and lower bounds on the CPV can be calculated by probability inequalities. Travelers were assumed to choose the routes with the best worst-case CPVs. The proposed model was formulated as a variational inequality problem and solved via a heuristic solution algorithm. A numerical example was also provided to illustrate the application of the proposed model and the efficiency of the solution algorithm.

  10. Destination image and crime in Mexico: An analysis of foreign government travel advice

    Directory of Open Access Journals (Sweden)

    J. Carlos Monterrubio

    2013-01-01

    Full Text Available Destination image has been recognised as an influential component of travel decision processes. Although organic sources of information play an important role in shaping destination image, researchers have often ignored the types of sources and the information they deliver. In particular, official websites where government travel advice is given, especially in relation to crime, have been widely excluded from scholarly research. This paper analyses the relationship between crime-related travel advice given by foreign governments and Mexico’s destination image. Qualitative content analysis of official websites from the US, Canada, the UK and Spain reveals that the travel advice given relates largely to the violence and insecurity that Mexico is currently experiencing. “No advisory in effect”, “Exercise caution” and “Defer non-essential travel” are messages commonly found in the governments’ travel advice about Mexico.

  11. Post-harmonised European National Travel Surveys

    DEFF Research Database (Denmark)

    Christensen, Linda; Sobrino Vázquez, Natalia

    of walking trips rather similar with a higher level of cycling in the Netherlands, more public transport in Switzerland, and more air traffic in Sweden. Normally kilometres per respondent / inhabitant is used for national planning purpose and this is very affected by the share of mobile travellers......Look-up tables are collected and analysed for 12 European National Travel Surveys (NTS) in a harmonized way covering the age group 13-84 year. Travel behaviour measured as kilometres, time use and trips per traveller is compared. Trips per traveller are very similar over the countries whereas...

  12. [Pre-travel advice for the elderly].

    Science.gov (United States)

    Potin, M

    2005-05-11

    The aging population, the multiplication of leisure activities and the many possibilities to travel will confront the primary care physician to elderly travelers who want health advice prior to their journey, sometimes in remote areas. Age itself is no contra-indication to travel, but the co-morbidities and the potential upsets that the elderly can be submitted to might render her/him more vulnerable to health problems. A medical evaluation, specific recommendations about traveling (including sufficient medication and medical material) and a medical certificate should be proposed by the primary care practitioner to her/his elderly patient planning to travel.

  13. Additive measures of travel time variability

    DEFF Research Database (Denmark)

    Engelson, Leonid; Fosgerau, Mogens

    2011-01-01

    This paper derives a measure of travel time variability for travellers equipped with scheduling preferences defined in terms of time-varying utility rates, and who choose departure time optimally. The corresponding value of travel time variability is a constant that depends only on preference...... parameters. The measure is unique in being additive with respect to independent parts of a trip. It has the variance of travel time as a special case. Extension is provided to the case of travellers who use a scheduled service with fixed headway....

  14. Tourists get US visas for group travel

    Institute of Scientific and Technical Information of China (English)

    Robert Goodman

    2008-01-01

    <正>Chinese will soon be able to travel to the United States on tourist visas,according to an agreement signed in Beijing Tuesday. The memorandum of understanding(MOU) signed between the two countries to facilitate outbound tourist group travel grants the US Approved Destination Status(ADS) after years of negotiations,making it the 134th country on China’s list. Chinese travelers will be able to travel in groups as early as in spring.Currently,the US issues only business travel visas.

  15. Zika Virus in an American Recreational Traveler.

    Science.gov (United States)

    Summers, Dyan J; Acosta, Rebecca Wolfe; Acosta, Alberto M

    2015-01-01

    We report the case of a 48-year-old American traveler who presented to our clinic with diffuse rash, malaise, fatigue, fever, arthralgia, low back pain, and bilateral exudative conjunctivitis. The patient had an extensive vaccination and travel history: most notable for prior receipt of yellow fever vaccine; extensive travel or residence in areas endemic for dengue, chikungunya, and West Nile virus; and recent travel to French Polynesia. Clinical and laboratory findings were consistent with Zika virus (ZIKV) infection. Our report highlights the need to include ZIKV in the differential diagnosis, especially in febrile patients with a rash returning from endemic areas. © 2015 International Society of Travel Medicine.

  16. Illness in the Returned International Traveler.

    Science.gov (United States)

    Sanford, Christopher A; Fung, Claire

    2016-03-01

    Familiarity with the distribution, mode of transmission, and risk factors for acquisition of illnesses commonly transmitted to travelers to low-income nations can help guide clinicians in their work-up of an ill returned traveler. The 3 most common categories of illness in returned international travelers are gastrointestinal illness, fever, and dermatoses. Diarrhea is the most common illness reported in returned international travelers. Fever is a marker of a potentially significant illness; work-up of the ill febrile returned traveler should be conducted promptly. Copyright © 2016 Elsevier Inc. All rights reserved.

  17. [True and virtual risks of travellers].

    Science.gov (United States)

    Hatz, C; Walz, A; Genton, B; Behrens, R

    2014-05-01

    Evidence-based information on travel associated mortality is scarce. Perception, intuition and the availability of interventions such as vaccinations and chemoprophylaxis often guide pre-travel advice. Important risks including accidents and cardiovascular events are not routinely included in pre-travel consultations although they cause more fatalities and costs than infectious diseases. The increased risk of sustaining a road accident in poor economy countries should always be mentioned. The general practitioner is further best placed to discuss possible problems of travellers with chronic diseases before travel.

  18. TRAVEL

    Institute of Scientific and Technical Information of China (English)

    Venice Lau

    2012-01-01

    <正>01拥抱三百六十度天堂级珊瑚水景〉马尔代夫向来都是热门的旅游胜地,最近由Dusit集团开设的Dusit Thani Maldives豪华酒店于今年二月落成,成为当地的新地标。酒店位于Baa Atoll的Mudhdhoo lsland岛上,从首都马累乘坐海上飞机三十五分钟便可到达。一百幢独立别墅充满泰式的建筑艺术气息,而且配备高科技设计。不同特色的度假别墅包括海滩别墅(Beac:h Villas)、舄湖别墅(LagoorVillas)及海洋别墅(Ocean Villas),此外更有两种极尽豪华的海洋亭阁(Ocean Pavilions)及海滩府邸(Ocean Resldences),每幢

  19. TRAVEL

    Institute of Scientific and Technical Information of China (English)

    Carrie Tsang; Phoenix

    2010-01-01

    <正>01意大利首间国家级当代艺术博物馆>由Zaha Hadid建筑事务所设计的MAXXINational Museum of XXI Century Arts位于罗马,是意大利第一个致力于当代艺术的国家公共博物馆。Zaha Hadid在1999年胜出了这个项目的国际设计比赛,2003年开始动工,工程目前已进入完竣阶段,为馆址

  20. Business travelers: vaccination considerations for this population.

    Science.gov (United States)

    Chen, Lin H; Leder, Karin; Wilson, Mary E

    2013-04-01

    Illness in business travelers is associated with reduced productivity on the part of the employee as well as the employer. Immunizations offer a reliable method of preventing infectious diseases for international business travelers. The authors review the travel patterns of business travelers, available data on illnesses they encounter, their potential travel-associated risks for vaccine-preventable diseases and recommendations on immunizations for this population. Routine vaccines (e.g., measles, tetanus and influenza) should be reviewed to assure that they provide current coverage. The combined hepatitis A and hepatitis B vaccine with a rapid schedule offers options for those with time constraints. Other vaccine recommendations for business travelers need to focus on their destinations and activities and underlying health, taking into account the concept of cumulative risk for those with frequent travel, multiple trips or long stays.

  1. Accurate estimation of indoor travel times

    DEFF Research Database (Denmark)

    Prentow, Thor Siiger; Blunck, Henrik; Stisen, Allan

    2014-01-01

    The ability to accurately estimate indoor travel times is crucial for enabling improvements within application areas such as indoor navigation, logistics for mobile workers, and facility management. In this paper, we study the challenges inherent in indoor travel time estimation, and we propose...... the InTraTime method for accurately estimating indoor travel times via mining of historical and real-time indoor position traces. The method learns during operation both travel routes, travel times and their respective likelihood---both for routes traveled as well as for sub-routes thereof. InTraTime...... allows to specify temporal and other query parameters, such as time-of-day, day-of-week or the identity of the traveling individual. As input the method is designed to take generic position traces and is thus interoperable with a variety of indoor positioning systems. The method's advantages include...

  2. [Travel medicine for HIV-infected patients].

    Science.gov (United States)

    Rossi, M; Furrer, H

    2001-06-01

    Many HIV-infected persons travel from temperate zones to (sub)tropical destinations. HIV-specific immigration issues, medical resources abroad and problems regarding travelling with multiple medications have to be anticipated. When prescribing immunizations and specific chemoprophylaxis, the stage of immunodeficiency as well as drug interactions with antiretrovirals and medicaments against opportunistic infections have to be taken into account. Live vaccines may be contraindicated. Immunocompromised HIV-infected travellers have a higher risk for serious courses of diseases by enteropathogens. Therefore a good information about food hygiene is important and a prescription of an antibiotic to take in case of severe diarrhea may be indicated. A new antiretroviral combination therapy should not be started immediately before travelling to the tropics. The possibility to continue an established HIV treatment during travel has to be evaluated cautiously. With good pre-travel advice the risk of severe health problems is low for most HIV-infected travellers.

  3. The Archaeology of Time travel – An introduction

    OpenAIRE

    Petersson, Bodil; Holtorf, Cornelius

    2010-01-01

    This article introduces the concept of Time Travel as a new way to approach the past in our age. The article deals with the question: What role does the past play for people in our time? The time travel discussion focusses on the following themes: Time travel between materality and virtuality; Time travel on the market of experiences; Designing time travel; Evaluating time travel.

  4. Travel Writing Revisited1 Travel Writing Revisited1

    Directory of Open Access Journals (Sweden)

    Édina Pereira Crunfli

    2008-04-01

    Full Text Available In compiling the essays for this volume, Steve Clark’s main concern is a revisionist one. This collection represents a shift away from what is sometimes called the “homoglossic” obsession with Empire present in postcolonial theory, from Edward Said’s influential Orientalism (1978, through Mary Louise Pratt’s Imperial Eyes (1992, to David Spurr’s The Rhetoric of Empire (1993. This book resists the temptation to think in terms of “the reduction of cross-cultural encounter to simple relations of domination and subordination.” Challenging Pratt, Clark describes her thesis (of travel writing producing the rest of the world for European readerships at particular points in Europe’s expansionist trajectory as “hyperbolic”. In compiling the essays for this volume, Steve Clark’s main concern is a revisionist one. This collection represents a shift away from what is sometimes called the “homoglossic” obsession with Empire present in postcolonial theory, from Edward Said’s influential Orientalism (1978, through Mary Louise Pratt’s Imperial Eyes (1992, to David Spurr’s The Rhetoric of Empire (1993. This book resists the temptation to think in terms of “the reduction of cross-cultural encounter to simple relations of domination and subordination.” Challenging Pratt, Clark describes her thesis (of travel writing producing the rest of the world for European readerships at particular points in Europe’s expansionist trajectory as “hyperbolic”.

  5. La cuadratura del plato

    Directory of Open Access Journals (Sweden)

    Ángeles Mora

    2012-06-01

    Full Text Available Una de las cosas que el Jurado del X Premio de Poesía Vicente Núñez destacó de este libro fue “su exquisito tratamiento del lenguaje”. Y desde luego lo es, es exquisito su tratamiento del lenguaje pero no porque utilice un lenguaje exquisito o excelso sino porque sabe arrancarle al lenguaje de todos los días, a las palabras sencillas, toda la carga poética de emoción e iluminación que llevan dentro. Mónica Doña nos dice que en su libro ha querido huir de un lirismo que muchas veces resulta falso, hueco, y nos habla de que lo que ha querido hacer es “épica cotidiana”, sin héroes, porque por su libro, como por la vida nuestra de todos los días, lo que circulan son seres que sobreviven como pueden en un mundo adverso.

  6. La cuadratura del plato

    OpenAIRE

    Ángeles Mora

    2012-01-01

    Una de las cosas que el Jurado del X Premio de Poesía Vicente Núñez destacó de este libro fue “su exquisito tratamiento del lenguaje”. Y desde luego lo es, es exquisito su tratamiento del lenguaje pero no porque utilice un lenguaje exquisito o excelso sino porque sabe arrancarle al lenguaje de todos los días, a las palabras sencillas, toda la carga poética de emoción e iluminación que llevan dentro. Mónica Doña nos dice que en su libro ha querido huir de un lirismo que muchas veces resulta fa...

  7. Improved Traveling-Wave Tube

    Science.gov (United States)

    Rousseau, Art; Tammaru, Ivo; Vaszari, John

    1988-01-01

    New space traveling-wave tube (TWT) provides coherent source of 75 watts of continuous-wave power output over bandwidth of 5 GHz at frequency of 65 GHz. Coupled-cavity TWT provides 50 dB of saturated gain. Includes thermionic emitter, M-type dispenser cathode providing high-power electron beam. Beam focused by permanent magnets through center of radio-frequency cavity structure. Designed for reliable operation for 10 years, and overall efficiency of 35 percent minimizes prime power input and dissipation of heat.

  8. Traveling waves in rapid solidification

    Directory of Open Access Journals (Sweden)

    Karl Glasner

    2000-02-01

    Full Text Available We analyze rigorously the one-dimensional traveling wave problem for a thermodynamically consistent phase field model. Existence is proved for two new cases: one where the undercooling is large but not in the hypercooled regime, and the other for waves which leave behind an unstable state. The qualitative structure of the wave is studied, and under certain restrictions monotonicity of front profiles can be obtained. Further results, such as a bound on propagation velocity and non-existence are discussed. Finally, some numerical examples of monotone and non-monotone waves are provided.

  9. Travelling Ideas, Power and Place

    DEFF Research Database (Denmark)

    Tait, Malcolm; Jensen, Ole B.

    2007-01-01

    propose a framework that focuses our understanding of how ideas are translated into new spatial settings.  The examples of the Urban Village and the Business Improvement District will be used to explicate the analytical framework.  In concluding, the paper assesses the utility of the analytic framework......A multitude of concepts and ideas have shaped practices in professions such as planning, urban design and urban management.  Now, however, the speed and intensity by which these ideas travel seems historically unprecedented. This paper explores how some of these ideas are formed and circulated...

  10. 77 FR 5252 - Federal Travel Regulation; GSA E-Gov Travel Service (ETS) Transition to E-Gov Travel Service 2...

    Science.gov (United States)

    2012-02-02

    ... ADMINISTRATION Federal Travel Regulation; GSA E-Gov Travel Service (ETS) Transition to E-Gov Travel Service 2... of a bulletin. SUMMARY: The attached bulletin announces GSA ETS Transition to ETS2. DATES: Effective.... Frank Robinson, ETS Program Manager Center for Travel Management (QMCD), Office of Travel and...

  11. [Analysis of prevention of diseases in travellers on the basis of latest results in travel medicine].

    Science.gov (United States)

    Felkai, Péter

    2008-09-07

    When we survey the possibilities of prevention in travel medicine, it is soon detected that the "classical" or "infectology-oriented" approach of prevention (vaccination - chemoprophylaxis - pretravel advice) cannot respond to all peritravel medical problems. These newly arisen challenges require a new, complex outlook for travel medicine, mainly in the field of prevention, treatment and management of travel-related illnesses. Although travellers are still exposed to various infectious diseases, which are mostly preventable by the primary prevention methods (biomedical prophylaxis), the majority of travellers suffer from non-infectious diseases and fall ill or suffer accident by other, travel-relating factors. Moreover, the predominant destination is Europe for an average Hungarian traveller. The travellers, whose destination is not any tropical or developing country, i.e. adventure travellers, people in extreme sports, chronic patients all require same-level peritravel (prevention-oriented) advice, too. Thus besides vaccination, helmets, salt-tablets, medical kit, mobile oxygenator must belong to a travel doctors' arsenal. We also have to mention the travellers' acute illness/accident abroad, travellers who require repatriation, and also the appropriate travel insurance policy which should be worked out following evidence-based medical considerations. The above-mentioned complex task requires not only a broad-spectrum, multidisciplinary knowledge, but an appropriate co-operation between the travel medicine physician, the general practitioner of the patient, and the doctor of the insurance company. But, above all, we have to redefine the topic of travel medicine, its subspecialties and role in the three-level (primary, secondary and tertiary) prevention. We have to redefine the different prevention levels and the used methods relating to the different subdisciplines of travel medicine. Upon the recent scientific researches, we can lay down four topics of travel

  12. Is Interstellar Space Travel Possible?

    CERN Document Server

    Singal, Tanmay

    2013-01-01

    It is shown that space travel, even in the most distant future, will remain confined to our own planetary system, and a similar conclusion will hold forth for any other civilization, no matter how advanced it might be, unless those extra-terrestrial species have life spans order of magnitude longer than ours. Even in such a case it is unlikely that they will travel much farther than their immediate stellar neighbourhood, as each such excursion will exhaust the resources of their home planet so much that those will dwindle rather fast and there might not be much left for the further scientific and technological advancements. So the science-fiction fancy of a "Galactic Empire" may ever remain in our fantasies only. And as for the mythical UFOs, whose quiet appearances do get reported in the press once in a while, recent explorations have shown no evidence that any such thing could have an origination within our own solar system itself. And a "quiet trip" back and forth from a distant star is almost impossible a...

  13. [Infectious aetiologies of travelers' diarrhoea].

    Science.gov (United States)

    Cavallo, J-D; Garrabé, E

    2007-11-01

    Traveler's diarrhoea (TD) occurs in 20 to 60% of European or North-American travelers in intertropical areas. Following return from endemic zone, malaria must always be evocated in front of febrile diarrhoea. Many causative infectious agents are involved in TD and their frequency may vary according to destination and seasons. The main agents involved in TD are Escherichia coli pathovars (especially enterotoxigenic and enteroaggregative E. coli) followed by enteroinvasive bacteria (Campylobacter spp., Shigella spp., Salmonella enterica), enteric viruses (norovirus, rotavirus) and protozoa (Gardia intestinalis, Cryptosporidium parvum et Entamoeba histolytica). The development of molecular biology methods as PCR may allow us to evaluate the relative frequency of these agents and especially of viral agents in TD. Protozoa and microsporidia are more frequently isolated in persistent and chronic TD, especially in compromised patients. A complete etiological research in routine microbiology laboratories is difficult and time-consuming, related to the high diversity of causative agents and the need for specific methods. Implementation of laboratory diagnosis is highly recommended when diarrhoea is associated with fever or presence of blood in stools, immunosuppression, antibiotic treatment (Clostridium difficile toxins) or in case of persistent/chronic diarrhoea. According to the high frequency of acquired antibiotic-resistance in enteric bacteria, an antibiogram must be performed for all causative bacterial agents.

  14. Greenhouse Earth: A Traveling Exhibition

    Energy Technology Data Exchange (ETDEWEB)

    Booth, W.H.; Caesar, S.

    1992-09-01

    The Franklin Institute Science Museum provided an exhibit entitled the Greenhouse Earth: A Traveling Exhibition. This 3500 square-foot exhibit on global climate change was developed in collaboration with the Association of Science-Technology Centers. The exhibit opened at The Franklin Institute on February 14, 1992, welcoming 291,000 visitors over its three-month stay. During its three-year tour, Greenhouse Earth will travel to ten US cities, reaching two million visitors. Greenhouse Earth aims to deepen public understanding of the scientific issues of global warming and the conservation measures that can be taken to slow its effects. The exhibit features hands-on exhibitry, interactive computer programs and videos, a theater production, a demonstration cart,'' guided tours, and lectures. supplemental educational programs at the Institute included a teachers preview, a symposium on climate change, and a satellite field trip.'' The development of Greenhouse Earth included front-end and formative evaluation procedures. Evaluation includes interviews with visitors, prototypes, and summative surveys for participating museums. During its stay in Philadelphia, Greenhouse Earth was covered by the local and national press, with reviews in print and broadcast media. Greenhouse Earth is the first large-scale museum exhibit to address global climate change.

  15. Traveling Lamb wave in elastic metamaterial layer

    Science.gov (United States)

    Shu, Haisheng; Xu, Lihuan; Shi, Xiaona; Zhao, Lei; Zhu, Jie

    2016-10-01

    The propagation of traveling Lamb wave in single layer of elastic metamaterial is investigated in this paper. We first categorized the traveling Lamb wave modes inside an elastic metamaterial layer according to different combinations (positive or negative) of effective medium parameters. Then the impacts of the frequency dependence of effective parameters on dispersion characteristics of traveling Lamb wave were studied. Distinct differences could be observed when comparing the traveling Lamb wave along an elastic metamaterial layer with one inside the traditional elastic layer. We further examined in detail the traveling Lamb wave mode supported in elastic metamaterial layer, when the effective P and S wave velocities were simultaneously imaginary. It was found that the effective modulus ratio is the key factor for the existence of special traveling wave mode, and the main results were verified by FEM simulations from two levels: the level of effective medium and the level of microstructure unit cell.

  16. [Travellers and multi-drug resistance bacteria].

    Science.gov (United States)

    Takeshita, Nozomi

    2012-02-01

    The number of international travellers has increased. There is enormous diversity in medical backgrounds, purposes of travel, and travelling styles among travellers. Travellers are hospitalized abroad because of exotic and common diseases via medical tourism. This is one way of transporting and importing human bacteria between countries, including multi-drug resistant organisms. In developing countries, the antimicrobial resistance in Shigella sp. and Salmonella sp. have been a problem, because of this trend, the first choice of antibiotics has changed in some countries. Community acquired infections as well as hospital acquired infections with MRSA, multi-drug resistance (MDR) Pseudomonas aeruginosa, and ESBL have been a problem. This review will discuss the risk of MDR bacterial infectious diseases for travellers.

  17. Traveling Baseball Players' Problem in Korea

    OpenAIRE

    Jeong, Hyang Min; Kim, Sang-Woo; Kim, Aaram J.; Choi, Younguk; Eun, Jonghyoun; Kim, Beom Jun

    2012-01-01

    We study the so-called the traveling tournament problem (TTP), to find an optimal tournament schedule. Differently from the original TTP, in which the total travel distance of all the participants is the objective function to minimize, we instead seek to maximize the fairness of the round robin tournament schedule of the Korean Baseball League. The standard deviation of the travel distances of teams is defined as the energy function, and the Metropolis Monte-Carlo method combined with the sim...

  18. Travel Time Variability and Airport Accessibility

    OpenAIRE

    Koster, P.R.; Kroes, E.P.; Verhoef, E.T.

    2010-01-01

    This discussion paper resulted in a publication in Transportation Research Part B: Methodological (2011). Vol. 45(10), pages 1545-1559. This paper analyses the cost of access travel time variability for air travelers. Reliable access to airports is important since it is likely that the cost of missing a flight is high. First, the determinants of the preferred arrival times at airports are analyzed, including trip purpose, type of airport, flight characteristics, travel experience, type of che...

  19. Distance traveled for Medicaid-covered abortion care in California.

    Science.gov (United States)

    Johns, Nicole E; Foster, Diana Greene; Upadhyay, Ushma D

    2017-04-19

    Access to abortion care in the United States is limited by the availability of abortion providers and their geographic distribution. We aimed to assess how far women travel for Medicaid-funded abortion in California and identify disparities in access to abortion care. We obtained data on all abortions reimbursed by the fee-for-service California state Medicaid program (Medi-Cal) in 2011 and 2012 and examined distance traveled to obtain abortion care by several demographic and abortion-related factors. Mixed-effects multivariable logistic regression models were constructed to examine factors associated with traveling 50 miles or more. County-level t-tests and linear regressions were conducted to examine the effects of a Medi-Cal abortion provider in a county on overall and urban/rural differences in utilization. 11.9% (95% CI: 11.5-12.2%) of women traveled 50 miles or more. Women obtaining second trimester or later abortions (21.7%), women obtaining abortions at hospitals (19.9%), and rural women (51.0%) were most likely to travel 50 miles or more. Across the state, 28 counties, home to 10% of eligible women, did not have a facility routinely providing Medi-Cal-covered abortions. Efforts are needed to expand the number of abortion providers that accept Medi-Cal. This could be accomplished by increasing Medi-Cal reimbursement rates, increasing the types of providers who can provide abortions, and expanding the use of telemedicine. If national trends in declining unintended pregnancy and abortion rates continue, careful attention should be paid to ensure that reduced demand does not lead to greater disparities in geographic and financial access to abortion care by ensuring that providers accepting Medicaid payment are available and widely distributed.

  20. 苏格拉底、柏拉图、亚里士多德与丑%Socrates,Plato and Aristotle's Views on Ugliness

    Institute of Scientific and Technical Information of China (English)

    区翰子; 李佳

    2014-01-01

    尽管从苏格拉底开始就萌生“丑”这个美学范畴,其在古代一直处于被忽视和非独立的地位。拟通过分析苏格拉底、柏拉图和亚里士多德三位巨匠的“丑”观,揭示“审丑”在萌芽时期的状态。%Despite its first faint showing started from Socrates , Ugliness had constantly been over-looked as a dependent aesthetic category in the ancient time .The following discussion will analyze the views of Socrates ,Plato and Aristotle on the appreciation of ugliness ,thus revealing the state of the appre-ciation of ugliness in its earlier stage .

  1. On Aesthetic Thoughts of Socrates, Plato and Aristotle%古希腊“三贤”美育思想概论

    Institute of Scientific and Technical Information of China (English)

    秦宾; 刘忠伟

    2011-01-01

    Based on analysis of aesthetic thoughts of Socrates, Plato and Aristotle, the famous philosophers in ancient Greek, this paper attempts to use their ideas for reference in guiding the cur- rent teaching practice to better aesthetic education.%通过对古希腊时期三位著名哲学家苏格拉底、柏拉图、亚里土多德美育思想的简要概括和论述,试图从他们对美育思想的主张中提取有益于符合我们现实国情的教育理念,对我们在教学实践中更好地实施美育教育提供可资借鉴的依据。

  2. Approach to Immunization for the Traveling Child.

    Science.gov (United States)

    Myers, Angela L; Christenson, John C

    2015-12-01

    Children are traveling to regions of the world that could pose a risk of acquiring diseases such as malaria, dermatosis, and infectious diarrhea. Most of these can be prevented by modifying high-risk behaviors or through the use of medications. Many of these same regions are endemic with diseases that are preventable through vaccination. Clinicians must be able to effectively prepare their pediatric-age travelers for international travel. Preventive education, prophylactic and self-treating medications, and vaccinations are all important components of this preparation. Familiarity with the use of travel vaccines is imperative.

  3. [New approaches of malaria prevention for travelers].

    Science.gov (United States)

    Voumard, Rachel; Berthod, Delphine; Rochat, Laurence; D'Acremont, Valérie; Genton, Blaise; De Vallière, Serge

    2016-05-01

    Malaria is declining in many tropical countries. This reduction challenges our usual preventive strategies. In moderate to low risk areas, the Swiss guidelines recommend a stand-by emergency treatment. Controversies between experts are numerous though. Professionals at the Travel Clinic in Lausanne has explored shared-decision making through three clinical studies. The first showed that travelers visiting moderate to low risk malaria areas prefer a standby emergency treatment rather than chemoprophylaxis. The second study investigates the use of rapid diagnostic tests by travelers. The third focuses on the prospects of tropical telemedicine. Involving the traveler into the debate is a priority, until a vaccine becomes available.

  4. The Differences between Plato and Aristotle's Educational Philosophy%柏拉图与亚里士多德教育哲学的差异

    Institute of Scientific and Technical Information of China (English)

    刘良华

    2012-01-01

    古典西方教育哲学分为两个阵营:柏拉图以苏格拉底的名义组建他的“理想国”,按照“理论理性”设计他的“政治哲学”和教育方案;柏拉图坚持“哲人王”统治、公产制和道德教育。亚里士多德虽然坚持了哲学对政治的指导,但他看到了哲学对政治的危险,按照“实践理性”的优先性开创了不同于柏拉图的“政治哲学”的“政治科学”以及相关的教育方案。亚里士多德重视轮流制、私有制和法制教育。%The classical philosophy of education is divided into two camps. Plato built his Republic in the name of Socrates and designed the political philosophy and education plan with the theoretical reason. He adhered to the rule of the “philosophy king”, the communist membership system and moral education. Aristotle realized the danger of the philosophy to the politics, although he insisted in the guidance of philosophy to politics. He created the political science and education plan with the practical reason instead of Plato's political philosophy. He valued the political rule, the private ownership, and the legal education.

  5. International travel as medical research: architecture and the modern hospital.

    Science.gov (United States)

    Logan, Cameron; Willis, Julie

    2010-01-01

    The design and development of the modern hospital in Australia had a profound impact on medical practice and research at a variety of levels. Between the late 1920s and the 1950s hospital architects, administrators, and politicians travelled widely in order to review the latest international developments in the hospital field They were motivated by Australia's geographic isolation and a growing concern with how to govern the population at the level of physical health. While not 'medical research' in the conventional sense of the term, this travel was a powerful generator of medical thinking in Australia and has left a rich archival legacy. This paper draws on that archive to demonstrate the ways in which architectural research and international networks of hospital specialists profoundly shaped the provision of medical infrastructure in Australia.

  6. Valuing travel time variability: Characteristics of the travel time distribution on an urban road

    DEFF Research Database (Denmark)

    Fosgerau, Mogens; Fukuda, Daisuke

    2012-01-01

    This paper provides a detailed empirical investigation of the distribution of travel times on an urban road for valuation of travel time variability. Our investigation is premised on the use of a theoretical model with a number of desirable properties. The definition of the value of travel time...... variability depends on certain properties of the distribution of random travel times that require empirical verification. Applying a range of nonparametric statistical techniques to data giving minute-by-minute travel times for a congested urban road over a period of five months, we show that the standardized...... travel time is roughly independent of the time of day as required by the theory. Except for the extreme right tail, a stable distribution seems to fit the data well. The travel time distributions on consecutive links seem to share a common stability parameter such that the travel time distribution...

  7. Contact frequency, travel time, and travel costs for patients with rheumatoid arthritis

    DEFF Research Database (Denmark)

    Sørensen, Jan; Linde, Louise; Hetland, Merete Lund

    2014-01-01

    across Denmark recruited patients to the study. Data collected included frequency, travel time and travel costs for contacts at rheumatology outpatient clinics, other outpatient clinics, general practitioners, privately practicing medical specialists, inpatient hospitals and accident and emergency...

  8. Challenges to providing pre-travel care for travellers visiting friends and relatives: an audit of a specialist travel medicine clinic.

    Science.gov (United States)

    Rowe, Kate; Chaves, Nadia; Leder, Karin

    2017-09-01

    Travellers visiting friends and relatives (VFRs) often have complex pre-travel needs. We identified the characteristics, destinations, vaccinations and pre-travel advice provided to VFRs and compared these with non-VFR travellers. The significant differences we found suggest that future research should focus on improving the uptake of recommended interventions in VFR travellers. © International Society of Travel Medicine, 2017. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

  9. Residential self-selection and travel: The relationship between travel-related attitudes, built environment characteristics and travel behaviour

    NARCIS (Netherlands)

    Bohte, W.

    2010-01-01

    Most Western national governments aim to influence individual travel patterns – at least to some degree – through spatial planning in residential areas. Nevertheless, the extent to which the characteristics of the built environment influence travel behaviour remains the subject of some debate among

  10. Traveling waves of selective sweeps

    CERN Document Server

    Durrett, Rick

    2009-01-01

    The goal of cancer genome sequencing projects is to determine the genetic alterations that cause common cancers. Many malignancies arise during the clonal expansion of a benign tumor which motivates the study of recurrent selective sweeps in an exponentially growing population. To better understand this process, Beerenwinkel et al.(2007) consider a Wright-Fisher model in which cells from an exponentially growing population accumulate advantageous mutations. Simulations show a traveling wave in which the time of the first k-fold mutant, $\\tau_k$, is approximately linear in $k$ and heuristics are used to obtain formulas for $E\\tau_k$. Here, we consider the analogous problem for the Moran model and prove that as the mutation rate $\\mu\\to 0$, $\\tau_k \\sim c_k \\log(1/\\mu)$, where the $c_k$ can be computed explicitly.

  11. Travelers, keep your yardsticks covered!

    CERN Document Server

    Fraundorf, P B

    1997-01-01

    This note is about introducing classical mechanics in a way that overtly dispels Newtonian misconceptions, minimizing the obstacles to a student's eventual understanding of space-time. This is done by operationally defining all quantities that depend on the observer's state of motion, including time, with respect to a specific ``map-frame'', and by introducing the classical equations for energy, momentum, and velocity-addition as low-speed approximations. It also provides tools for quantifying unidirectional motion at any speed, by students freshly-introduced to constant acceleration. This is done by describing traveler-time as the invariant in the metric equation, presented as a space-time extension of Pythagoras' theorem. Confusions involving frame-dependent simultaneity and length-contraction are minimized by considering only distances measured by observers in the reference map-frame.

  12. Coronal Mass Ejections travel time

    Science.gov (United States)

    Braga, Carlos Roberto; Souza de Mendonça, Rafael Rodrigues; Dal Lago, Alisson; Echer, Ezequiel

    2017-10-01

    Coronal mass ejections (CMEs) are the main source of intense geomagnetic storms when they are earthward directed. Studying their travel time is a key-point to understand when the disturbance will be observed at Earth. In this work, we study the CME that originated the interplanetary disturbance observed on 2013/10/02. According to the observations, the CME that caused the interplanetary disturbance was ejected on 2013/09/29. We obtained the CME speed and estimate of the time of arrival at the Lagrangian Point L1 using the concept of expansion speed. We found that observed and estimated times of arrival of the shock differ between 2 and 23 hours depending on method used to estimate the radial speed.

  13. [Acute schistosomiasis in French travellers].

    Science.gov (United States)

    Agbessi, C-A; Bourvis, N; Fromentin, M; Jaspard, M; Teboul, F; Bougnoux, M-E; Hanslik, T

    2006-08-01

    The clinical presentation of acute schistosomiasis in travellers differs from those observed with chronic schistosomiasis in people from endemic areas. The objective of this study is to describe the main clinical and biological characteristics of the acute schistosomiasis in French travellers. Retrospective study conducted in 42 hospital laboratories of parasitology in France, based on a questionnaire filled out for each case of schistosomiasis diagnosed in subjects non-originating from an endemic country and returning from of a stay in Africa, between 2000 and 2004. Seventy-seven cases of acute schistosomiasis diagnosed between 2000 and 2004 were reported by 15 of the 33 laboratories having taken part in the study. The patients were 26 years old on average and 60% were contaminated in West Africa. Seventy patients (91%) presented at least one symptom at the moment of the diagnosis, but only 44 (57%) presented sufficiently intense symptoms to justify a medical consultation spontaneously. The most frequently reported clinical signs were fever (44%), diarrhoea (40%), pruritus (25%), cough (21%) and hematuria (20%). Hypereosinophilia (82%), elevated liver enzymes and positive serology were respectively reported in 82, 23 and 90% of the cases. Ova were found in the urines or the stool in 60% of the cases. Eleven patients were hospitalized. Acute schistosomiasis must be evoked in patients returning from endemic country and presenting with non-specific symptoms; including patients whose bathes in contaminated water was limited to a short contact of the feet in a river. The high frequency of the asymptomatic or paucisymptomatic forms exposes the infected people to a delayed diagnosis and therefore to an evolution towards the chronic form of schistosomiasis. The increase in tourism towards the endemic areas could be accompanied by an increase in the frequency of the schistosomiasis, and encourages setting-up an active monitoring of acute schistosomiasis.

  14. Enslaved Constitution: Obstructing the Freedom to Travel

    Directory of Open Access Journals (Sweden)

    Mitchell F. Crusto

    2008-04-01

    Full Text Available Does the Constitution protect a citizen’s intra-state travel (within a state from unjustified state prohibition? To date, the Supreme Court has not ruled directly on the issue, and many federal courts believe that the right to intrastate travel is not constitutionally protected. This Article explores the constitutional right of intra-state travel that is free from wrongful state infringement along public roadways by law-abiding citizens. Using critical legal history, this Article poses that federal courts’ denial of the right to intrastate travel consciously or unconsciously reflects the antebellum, Southern legal doctrine of people as property, which regulated the travel of enslaved African descendants.The constitutionality of intra-state travel arose most recently during the Hurricane Katrina Crisis when the City of Greta, Louisiana police barricaded a federal highway, denying would-be evacuees the ability to flee from the flooding City of New Orleans. In an ensuing action for infringement of the would-be evacuees’ constitutional right to intra-state travel, Federal District Judge Mary Ann Vial Lemmon dismissed the matter in Dickerson v. City of Gretna, holding that “[w]hile there is no doubt that a fundamental right of interstate travel exists, the Supreme Court has not ruled on whether a right of intra[-]state travel exists. This Court declines to find that there is a fundamental right to intra[-]state travel.” The Fifth Circuit affirmed the ruling.This Article recommends that when federal courts assess whether there is a constitutional right to intra-state travel, they should embrace the American paradigm of liberty and abandon the antebellum, Southern paradigm of enslavement. Consistent with Professor Derrick Bell’s “interestconvergence” principle, all Americans benefit when the Constitution protects the human rights of the least powerful American.

  15. You, too, can be an international medical traveler: Reading medical travel guidebooks

    NARCIS (Netherlands)

    Ormond, M.E.; Sothern, M.

    2012-01-01

    Drawing on literature on self-help and travel guide writing, this paper interrogates five international medical travel guidebooks aimed at encouraging American and British audiences to travel abroad to purchase medical care. These guidebooks articulate a three-step self-help “program” to produce a

  16. You, too, can be an international medical traveler: Reading medical travel guidebooks

    NARCIS (Netherlands)

    Ormond, M.E.; Sothern, M.

    2012-01-01

    Drawing on literature on self-help and travel guide writing, this paper interrogates five international medical travel guidebooks aimed at encouraging American and British audiences to travel abroad to purchase medical care. These guidebooks articulate a three-step self-help “program” to produce a “

  17. You, too, can be an international medical traveler: Reading medical travel guidebooks

    NARCIS (Netherlands)

    Ormond, M.E.; Sothern, M.

    2012-01-01

    Drawing on literature on self-help and travel guide writing, this paper interrogates five international medical travel guidebooks aimed at encouraging American and British audiences to travel abroad to purchase medical care. These guidebooks articulate a three-step self-help “program” to produce a “

  18. Examining the Relationship between Online Travel Agency Information and Traveler Destination Transaction Decisions

    Science.gov (United States)

    Yerby, Dennis

    2012-01-01

    The purpose of this quantitative study was to examine the role that available Online Travel Agency (OTA) destination information may have on a traveler's perceptions and intent in transaction decisions with that respective OTA. Specifically, this research examined a pleasure traveler's transaction perceptions and intentions with an OTA…

  19. Examining the Relationship between Online Travel Agency Information and Traveler Destination Transaction Decisions

    Science.gov (United States)

    Yerby, Dennis

    2012-01-01

    The purpose of this quantitative study was to examine the role that available Online Travel Agency (OTA) destination information may have on a traveler's perceptions and intent in transaction decisions with that respective OTA. Specifically, this research examined a pleasure traveler's transaction perceptions and intentions with an OTA…

  20. An Update on Travel Vaccines and Issues in Travel and International Medicine.

    Science.gov (United States)

    Rogers, Bonnie; Bunn, William B; Connor, Bradley A

    2016-08-23

    The fields of travel and international medicine are rapidly changing and growing. The role of occupational and travel health nurses is expanding and should be a focus for the future. At the American Association of Occupational Health Nurses Annual meeting on March 24, 2015, in Boston, five presentations were included in the session, An Update on Travel Vaccines and Issues in Travel and International Medicine. This article summarizes three of the presentations and includes a portion of the information generated by the Centers for Disease Control and Prevention (CDC) included in the fourth presentation. The first section focuses on the Essential Elements of Travel Medicine Programs including the pre-travel care assessment, trip research and risk identification, medication intervention review, non-pharmaceutical and prevention strategies, and post-travel care. The next section is an overview of key issues for business travelers. The growth in the number of international business travelers and unique aspects of business travel are emphasized in a comprehensive travel health program. This section also includes a discussion of expatriates and their special risks identified in recent literature (e.g., an assessment of the significant costs of health events and productivity losses by both business travelers and expatriates). The final section offers a specific example of a vaccine-preventable disease, namely, Japanese encephalitis (JE) virus, and needed changes in JE vaccine recommendations.

  1. Tonotopically arranged traveling waves in the miniature hearing organ of bushcrickets.

    Directory of Open Access Journals (Sweden)

    Arun Palghat Udayashankar

    Full Text Available Place based frequency discrimination (tonotopy is a fundamental property of the coiled mammalian cochlea. Sound vibrations mechanically conducted to the hearing organ manifest themselves into slow moving waves that travel along the length of the organ, also referred to as traveling waves. These traveling waves form the basis of the tonotopic frequency representation in the inner ear of mammals. However, so far, due to the secure housing of the inner ear, these waves only could be measured partially over small accessible regions of the inner ear in a living animal. Here, we demonstrate the existence of tonotopically ordered traveling waves covering most of the length of a miniature hearing organ in the leg of bushcrickets in vivo using laser Doppler vibrometery. The organ is only 1 mm long and its geometry allowed us to investigate almost the entire length with a wide range of stimuli (6 to 60 kHz. The tonotopic location of the traveling wave peak was exponentially related to stimulus frequency. The traveling wave propagated along the hearing organ from the distal (high frequency to the proximal (low frequency part of the leg, which is opposite to the propagation direction of incoming sound waves. In addition, we observed a non-linear compression of the velocity response to varying sound pressure levels. The waves are based on the delicate micromechanics of cellular structures different to those of mammals. Hence place based frequency discrimination by traveling waves is a physical phenomenon that presumably evolved in mammals and bushcrickets independently.

  2. Tonotopically arranged traveling waves in the miniature hearing organ of bushcrickets.

    Science.gov (United States)

    Palghat Udayashankar, Arun; Kössl, Manfred; Nowotny, Manuela

    2012-01-01

    Place based frequency discrimination (tonotopy) is a fundamental property of the coiled mammalian cochlea. Sound vibrations mechanically conducted to the hearing organ manifest themselves into slow moving waves that travel along the length of the organ, also referred to as traveling waves. These traveling waves form the basis of the tonotopic frequency representation in the inner ear of mammals. However, so far, due to the secure housing of the inner ear, these waves only could be measured partially over small accessible regions of the inner ear in a living animal. Here, we demonstrate the existence of tonotopically ordered traveling waves covering most of the length of a miniature hearing organ in the leg of bushcrickets in vivo using laser Doppler vibrometery. The organ is only 1 mm long and its geometry allowed us to investigate almost the entire length with a wide range of stimuli (6 to 60 kHz). The tonotopic location of the traveling wave peak was exponentially related to stimulus frequency. The traveling wave propagated along the hearing organ from the distal (high frequency) to the proximal (low frequency) part of the leg, which is opposite to the propagation direction of incoming sound waves. In addition, we observed a non-linear compression of the velocity response to varying sound pressure levels. The waves are based on the delicate micromechanics of cellular structures different to those of mammals. Hence place based frequency discrimination by traveling waves is a physical phenomenon that presumably evolved in mammals and bushcrickets independently.

  3. Travel Mode Detection Based on Neural Networks and Particle Swarm Optimization

    Directory of Open Access Journals (Sweden)

    Guangnian Xiao

    2015-08-01

    Full Text Available The collection of massive Global Positioning System (GPS data from travel surveys has increased exponentially worldwide since the 1990s. A number of methods, which range from rule-based to advanced classification approaches, have been applied to detect travel modes from GPS positioning data collected in travel surveys based on GPS-enabled smartphones or dedicated GPS devices. Among these approaches, neural networks (NNs are widely adopted because they can extract subtle information from training data that cannot be directly obtained by human or other analysis techniques. However, traditional NNs, which are generally trained by back-propagation algorithms, are likely to be trapped in local optimum. Therefore, particle swarm optimization (PSO is introduced to train the NNs. The resulting PSO-NNs are employed to distinguish among four travel modes (walk, bike, bus, and car with GPS positioning data collected through a smartphone-based travel survey. As a result, 95.81% of samples are correctly flagged for the training set, while 94.44% are correctly identified for the test set. Results from this study indicate that smartphone-based travel surveys provide an opportunity to supplement traditional travel surveys.

  4. On the question of interstellar travel

    Science.gov (United States)

    Wolfe, J. H.

    1985-01-01

    Arguments are presented which show that motives for interstellar travel by advanced technological civilizations based on an extrapolation of earth's history may be quite invalid. In addition, it is proposed that interstellar travel is so enormously expensive and perhaps so hazardous, that advanced civilizations do not engage in such practices because of the ease of information transfer via interstellar communication.

  5. Travel-Study as Learning in Sociology.

    Science.gov (United States)

    Forster, Brenda; Prinz, Andrew K.

    1988-01-01

    Discusses the objectives, characteristics, and outcomes associated with a joint "sociology-urban studies, travel-study, minicourse program." Describes how students in a four-day, two-credit-hour course travel to cities such as Washington, DC and Toronto to be exposed to different cultures, organizational structures, and social arrangements.…

  6. Travel medicine : knowledge, attitude, practice and immunisation

    NARCIS (Netherlands)

    Roukens, Anna Helena Elvire

    2010-01-01

    In an epoch where every generation travels more frequently and at longer distances than the previous generation, with a mean increase of 30 million travellers per year from 1995 until today, physicians throughout the world are confronted with new diseases. In absolute numbers, this implies that each

  7. Home Education, School, Travellers and Educational Inclusion

    Science.gov (United States)

    D'Arcy, Kate

    2014-01-01

    The difficulties Traveller pupils experience in school are well documented. Yet those in home educating go unreported. Monk suggests this is because some groups are overlooked; that gypsies and Travellers are often not perceived as home educators. This article highlights how the move to home education is seldom a free choice for Traveller…

  8. Parametric form of QCD travelling waves

    OpenAIRE

    Peschanski, R.

    2005-01-01

    We derive parametric travelling-wave solutions of non-linear QCD equations. They describe the evolution towards saturation in the geometric scaling region. The method, based on an expansion in the inverse of the wave velocity, leads to a solvable hierarchy of differential equations. A universal parametric form of travelling waves emerges from the first two orders of the expansion.

  9. Traveling Policies: Hijacked in Central Asia

    Science.gov (United States)

    Silova, Iveta

    2005-01-01

    Since the collapse of the Soviet Union, Central Asian education reform discourses have become increasingly similar to distinctive Western policy discourses traveling globally across national boundaries. Tracing the trajectory of "traveling policies" in Central Asia, this article discusses the way Western education discourses have been…

  10. Travel and the Social Studies Teacher.

    Science.gov (United States)

    Prince, Doris, Ed.

    1985-01-01

    Travel allows teachers to gather the data and realia to enliven history or global education in the classroom. In this special issue teachers describe personal travel experiences to many parts of the globe. Points of interest, itineraries, budgets, and artifacts collected are discussed. (RM)

  11. Evolutionary Stability in the Traveler's Dilemma

    Science.gov (United States)

    Barker, Andrew T.

    2009-01-01

    The traveler's dilemma is a generalization of the prisoner's dilemma which shows clearly a paradox of game theory. In the traveler's dilemma, the strategy chosen by analysis and theory seems obviously wrong intuitively. Here we develop a measure of evolutionary stability and show that the evolutionarily stable equilibrium is in some sense not very…

  12. Melioidosis in traveler from Africa to Spain.

    Science.gov (United States)

    Morosini, María I; Quereda, Carmen; Gil, Horacio; Anda, Pedro; Núñez-Murga, María; Cantón, Rafael; López-Vélez, Rogelio

    2013-10-01

    The worldwide epidemiology of melioidosis is changing. We describe a case of acute melioidosis in Spain in a patient who had traveled to Africa. A novel sequence type of Burkholderia pseudomallei was identified in this patient. Clinicians should be aware of the possibility of melioidosis in travelers returning from melioidosis-nonendemic regions.

  13. Tropical diarrhoea: new developments in traveller's diarrhoea.

    Science.gov (United States)

    Lima, A A

    2001-10-01

    Traveller's diarrhoea is the most common illness acquired by visitors to developing countries, affecting 20-50% of the 35 million people who travel from industrialized countries each year. Important risk factors include point of origin and destination of the traveller, host factors, and exposure to contaminated food and water. The most common causes of traveller's diarrhoea in adults in developing countries include infection with Escherichia coli, Shigella spp., Salmonella spp., Campylobacter spp., Vibrio parahaemolyticus (in Asia), rotavirus (in Latin America), and protozoa (Giardia, Cryptosporidium and Cyclospora spp., and Entamoeba histolytica). No pathogen is identified in over half of patients with traveller's diarrhoea, however. The primary objectives of treatment of traveller's diarrhoea are to reduce the symptoms and duration of diarrhoeal illness, to reduce inconvenience caused by such illness and to prevent cancellation of planned activities. These important objectives are best accomplished by empirical self-therapy with a combination of antimicrobial agents and loperamide. Since the first use of ciprofloxacin, fluoroquinolones have become the drugs of choice in empirical therapy for moderate-to-severe traveller's diarrhoea in adults. The options for children include nalidixic acid, trimethoprim-sulfamethoxazole (along with erythromycin if Campylobacter infection is a possibility) and furazolidone. Education on hygiene and safe food preparation help to prevent many diarrhoeal diseases, including traveller's diarrhoea.

  14. The Destined Death of the Travelling Salesman

    Institute of Scientific and Technical Information of China (English)

    何苗

    2015-01-01

    Death of a Travelling Salesman is a short story with heated discussion and dispute. Death, as the title of the story presents, has always been the center of criticism. This paper aims to dissect this short story, and to discuss the destined death of the travelling salesman.

  15. OPEN SPACE ALLOCATION AND TRAVEL COSTS

    OpenAIRE

    Kent F. Kovacs

    2003-01-01

    The gain from dividing parks into smaller pieces to reduce travel costs is weighed against the loss in services the parks provide since they are smaller. The optimal number of parks is dependent on whether travel costs are concentrated in parts of the town.

  16. Can Electricity Powered Vehicles Serve Traveler Needs?

    Directory of Open Access Journals (Sweden)

    Jianhe Du

    2013-06-01

    Full Text Available Electric vehicles (EV, Hybrid Electric Vehicles (HEV or Plug-in Hybrid Electric Vehicles (PHEV are believed to be a promising substitute for current gas-propelled vehicles. Previous research studied the attributes of different types of EVs and confirmed their advantages. The feasibility of EVs has also been explored using simulation, retrospective survey data, or a limited size of field travel data. In this study, naturalistic driving data collected from more than 100 drivers during one year are used to explore naturalistic driver travel patterns. Typical travel distance and time and qualified dwell times (i.e., the typical required EV battery recharging time between travels as based on most literature findings are investigated in this study. The viability of electric cars is discussed from a pragmatic perspective. The results of this research show that 90 percent of single trips are less than 25 miles; approximately 70 percent of the average annual daily travel is less than 60 miles. On average there are 3.62 trips made between four-hour dwell times as aggregated to 60 minutes and 50 miles of travel. Therefore, majority of trips are within the travel range provided by most of the currently available EVs. A well-organized schedule of recharging will be capable of covering even more daily travels.

  17. Parametric form of QCD travelling waves

    OpenAIRE

    Peschanski, R.

    2005-01-01

    We derive parametric travelling-wave solutions of non-linear QCD equations. They describe the evolution towards saturation in the geometric scaling region. The method, based on an expansion in the inverse of the wave velocity, leads to a solvable hierarchy of differential equations. A universal parametric form of travelling waves emerges from the first two orders of the expansion.

  18. 28 CFR 2.41 - Travel approval.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Travel approval. 2.41 Section 2.41 Judicial Administration DEPARTMENT OF JUSTICE PAROLE, RELEASE, SUPERVISION AND RECOMMITMENT OF PRISONERS, YOUTH OFFENDERS, AND JUVENILE DELINQUENTS United States Code Prisoners and Parolees § 2.41 Travel...

  19. Cybermediation in the Tourism and Travel Industries

    Science.gov (United States)

    Killion, Les

    Travel and tourism are second only to pornography in adopting Internet-based technologies to intermediate between those supplying the total travel experience, and those seeking to satisfy leisure needs by engaging in tourism. From Thomas Cook in the 1800s, traditional ‘travel trade networks’ have provided the components of the travel experience: transport, accommodation and attractions. However, the Internet has encouraged customer self-service, and on-going debate regarding the future of traditional travel trade intermediaries. The intermediation debate suggests the emergence of ‘hybrid’ intermediation systems combining customer self-service with face-to-face customer contacts characteristic of traditional travel agents. A focus group investigation identified profiles and motives of customers using the Internet to make holiday arrangements. Potential cost savings are a primary motivation for customer self-service. Using the Internet for travel and tourism is becoming commonplace among older travellers as well as younger people. In gathering information before making holiday decisions, potential tourists also engage in a Web 2.0 environment where family and friends, not established intermediaries, provide reliable and authentic information via their individual blogs.

  20. Traveling Policies: Hijacked in Central Asia

    Science.gov (United States)

    Silova, Iveta

    2005-01-01

    Since the collapse of the Soviet Union, Central Asian education reform discourses have become increasingly similar to distinctive Western policy discourses traveling globally across national boundaries. Tracing the trajectory of "traveling policies" in Central Asia, this article discusses the way Western education discourses have been hybridized…

  1. International travel and the elite athlete.

    Science.gov (United States)

    Pipe, Andrew L

    2011-01-01

    International travel is a frequent occurrence in the life of the elite athlete; such travel can pose challenges to the sport medicine practitioner. Travel is also the reality of many recreational level or sub-elite athletes as opportunities for international competition and training proliferate. An appreciation of the range of responsibilities associated with the preparation for and the strategies to facilitate such travel is essential for any physician charged with the care of athletes and teams. An appreciation of (1) the medical and public health challenges associated with competition in a particular setting; (2) the requirements for vaccination and immunization; (3) the strategies for the management of jet lag and climatic or environmental extremes; (4) the range of supplies and equipment necessary for travel to certain locales; (5) the need to ensure the availability of ample familiar and nutritious foods; (6) the potential need for specialty care in strange settings; (7) the management of common travel-associated illness; and (8) the challenges associated with the evacuation of an injured athlete are fundamental to the successful management of international travel involving athletes and teams. The adoption of a methodical approach to pre-trip planning can ensure an enhanced travel experience, illness-free training and competition, and facilitate optimal performance.

  2. Safe and Healthy Travel to China

    Centers for Disease Control (CDC) Podcasts

    2008-10-09

    In this podcast, Dr. Phyllis Kozarsky, CDC Travel Medicine expert, discusses what travelers should do to ensure a safe and healthy trip to China.  Created: 10/9/2008 by National Center for Preparedness, Detection, and Control of Infectious Diseases (NCPDCID), Division of Global Migration and Quarantine (DGMQ).   Date Released: 10/9/2008.

  3. 29 CFR 776.12 - Employees traveling across State lines.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Employees traveling across State lines. 776.12 Section 776... Engaging âin Commerceâ § 776.12 Employees traveling across State lines. Questions are frequently asked as... questions arise are those of traveling service men, traveling buyers, traveling construction...

  4. What documents should a foreigner hold for traveling in Tibet

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Applying for alien's travel permit: Before start your trip to Tibet, you need to contact with travel agency in Tibet through local counterpart, providing them with your traveling date, travel route, purpose of travel, name,passport number, vocation, the name of your working place and your address. You will receive answer from Tibet side quickly。

  5. Personal security a guide for international travelers

    CERN Document Server

    Spencer, Tanya

    2013-01-01

    Personal Security: A Guide for International Travelers provides the perfect mix of lessons-learned, tools, and recommendations from experts so that readers can personalize their own approach to managing travel risks. If followed, the information provided will allow readers to get out and experience the local culture while still traveling safely.-Bernie Sullivan, Director Global Security, Hanesbrands Inc....a must-have for any traveler. Having worked in South and Southeast Asia, I know the advice provided in the book holds the key to keeping safe, avoiding dangerous situations, and managing threats when they occur. The book's methodological framework, combined with the author's extensive experience and hands-on knowledge, provide very practical and useful advice.-Kathrine Alexandrowiz, Independent consultant at Kathalyst, former coordinator for the "Regional Risk Management Project for NGOs in Asia Pacific" (ECHO)... a go-to guide for all travelers irrespective of mission or purpose. An excellent piece of work...

  6. Health precautions for travelers to Mexico.

    Science.gov (United States)

    Peate, W F; Pust, R E

    1985-03-01

    After Canada, Mexico is the most popular destination for Americans traveling outside the United States. As a developing country, Mexico presents numerous health hazards to American visitors, including the prevalent travelers' diarrhea (turista), from which 40% will suffer, and the less common typhoid, dengue, rabies, malaria, taeniasis, cysticercosis, and trichinosis. Environmental hazards, including sun, heat, high altitude, motion sickness, and accidents, also threaten the unwary traveler. In the event of illness or injury, Americans may find medical facilities unfamiliar and less well equipped than those in the United States. Utilizing both an individualized risk assessment for each traveler and readily available references, physicians, in partnership with local public health agencies, can develop comprehensive preventive health plans for their patients traveling to Mexico.

  7. Limitations of typhoid vaccination for travellers.

    Science.gov (United States)

    Stephen, J; Mara, N; Nathwani, D

    1996-12-01

    Around one-third of travellers to endemic areas receive pre-travel typhoid vaccination, increasingly with the new parenteral vaccination Typhim Vi (Mérieux). More than 200 cases of Salmonella typhi and S. paratyphi infection are imported into the UK each year. Despite the widespread use of immunisation, non-specialist clinicians and the travelling public do not appear to fully appreciate the limitations of currently available vaccination. These limitations are not adequately highlighted in either the Green Book of Immunisation against Infectious Diseases (HMSO, 1992) or the new handbook Health Information for Overseas Travel (HMSO, 1995) which are important sources of reference for clinicians and practice nurses. This may delay consideration of diagnosis and presentation for treatment in immunised travellers.

  8. Nonlinear refraction and reflection travel time tomography

    Science.gov (United States)

    Zhang, Jiahua; ten Brink, U.S.; Toksoz, M.N.

    1998-01-01

    We develop a rapid nonlinear travel time tomography method that simultaneously inverts refraction and reflection travel times on a regular velocity grid. For travel time and ray path calculations, we apply a wave front method employing graph theory. The first-arrival refraction travel times are calculated on the basis of cell velocities, and the later refraction and reflection travel times are computed using both cell velocities and given interfaces. We solve a regularized nonlinear inverse problem. A Laplacian operator is applied to regularize the model parameters (cell slownesses and reflector geometry) so that the inverse problem is valid for a continuum. The travel times are also regularized such that we invert travel time curves rather than travel time points. A conjugate gradient method is applied to minimize the nonlinear objective function. After obtaining a solution, we perform nonlinear Monte Carlo inversions for uncertainty analysis and compute the posterior model covariance. In numerical experiments, we demonstrate that combining the first arrival refraction travel times with later reflection travel times can better reconstruct the velocity field as well as the reflector geometry. This combination is particularly important for modeling crustal structures where large velocity variations occur in the upper crust. We apply this approach to model the crustal structure of the California Borderland using ocean bottom seismometer and land data collected during the Los Angeles Region Seismic Experiment along two marine survey lines. Details of our image include a high-velocity zone under the Catalina Ridge, but a smooth gradient zone between. Catalina Ridge and San Clemente Ridge. The Moho depth is about 22 km with lateral variations. Copyright 1998 by the American Geophysical Union.

  9. Occurrence and self-treatment of diarrhea in a large cohort of Americans traveling to developing countries.

    Science.gov (United States)

    Hill, D R

    2000-05-01

    There is little information available regarding traveler's diarrhea that affects a large number of Americans who differ widely in age and travel destination, and little or no information exists on self-treatment. This paper describes the clinical features, self-treatment, and outcome of diarrhea in 784 (95% follow-up) Americans who traveled for travel advice. Diarrhea was reported by 46%. Of these, 34% (n = 270) had traveler's diarrhea (TD) defined as > or = 3 unformed stools/day +/- enteric symptoms or or = 1 enteric symptom, and 11% (n = 88) had loose motions (LM). Diarrhea was often severe and nearly a quarter of people with TD experienced fever and vomiting and 35% were required to alter their plans. The duration of travel and the destination itself were the strongest influences on diarrhea. Most travelers treated the illness themselves, whether or not they had LM (72%) or TD (83%). Those with LM took an antimotility agent or bismuth subsalicylate alone more frequently than those with TD (71% versus 48%, P travel advice. Because travelers usually treat themselves, they should be provided with clear instructions on appropriate self-treatment.

  10. 75 FR 47701 - Electronic System for Travel Authorization (ESTA): Travel Promotion Fee and Fee for Use of the...

    Science.gov (United States)

    2010-08-09

    ... international leisure and long-haul international business trips available from the published travel literature... business and leisure travelers, we first identify the portion of travel to the United States from VWP... costs vary by purpose of travel, but range from an average $1,406 per flight for a leisure traveler...

  11. BEYOND THE BLOG: THE NETWORKED SELF OF TRAVEL BLOGGERS ON TWITTER

    Directory of Open Access Journals (Sweden)

    Deepti Ruth Azariah

    2012-06-01

    Full Text Available Studies of the use of social media in tourism rarely discuss various tools in conjunction with each other. The growth of Twitter has attracted the attention of tourism researchers interested in the platform as a marketing tool and a source of information about consumers (Claster, Cooper, & Sallis, 2010; Hay, 2010. Similar studies of travel blogs largely focus on what tourists say about destinations and their own experiences (Akehurst, 2009; Bosangit, McCabe, & Hibbert, 2009; Schmallegger & Carson, 2008. Blogs in general, and travel blogs in particular, are widely regarded as providing credible information about their authors. Both the content and formal features of these online narratives shape the self-presentation and positioning of their authors as bloggers. Given that blogs are increasingly "distributed" (Helmond, 2010 and that independent travel bloggers often link to other platforms, it is necessary to consider author-created content beyond the blog to understand the presentation of what Papacharissi (2010 calls a "networked self." Drawing on the theories of Bakhtin and Goffman, which have informed previous analyses of blogs, and Dann’s (1996 concept of tourist discourse, this paper argues that the Twitter pages of independent travel bloggers extend the self-presentation in their blogs. In particular, it focuses on how travel bloggers use specific conventions, formal features, and narrative techniques of Twitter to express a networked self and reiterate themes of the blog. Through a random selection and textual analysis of various messages it finds that while there is some mention of the travel experience, the various conventions and conversations on Twitter are self-presentational elements that generally strengthen the authors’ position as travel bloggers. The characteristic narrative techniques of Twitter also reveal tensions between the discourses of travel and tourism. The networked self of the independent travel blogger is

  12. What are the health benefits of active travel? A systematic review of trials and cohort studies.

    Directory of Open Access Journals (Sweden)

    Lucinda E Saunders

    Full Text Available BACKGROUND: Increasing active travel (primarily walking and cycling has been widely advocated for reducing obesity levels and achieving other population health benefits. However, the strength of evidence underpinning this strategy is unclear. This study aimed to assess the evidence that active travel has significant health benefits. METHODS: The study design was a systematic review of (i non-randomised and randomised controlled trials, and (ii prospective observational studies examining either (a the effects of interventions to promote active travel or (b the association between active travel and health outcomes. Reports of studies were identified by searching 11 electronic databases, websites, reference lists and papers identified by experts in the field. Prospective observational and intervention studies measuring any health outcome of active travel in the general population were included. Studies of patient groups were excluded. RESULTS: Twenty-four studies from 12 countries were included, of which six were studies conducted with children. Five studies evaluated active travel interventions. Nineteen were prospective cohort studies which did not evaluate the impact of a specific intervention. No studies were identified with obesity as an outcome in adults; one of five prospective cohort studies in children found an association between obesity and active travel. Small positive effects on other health outcomes were found in five intervention studies, but these were all at risk of selection bias. Modest benefits for other health outcomes were identified in five prospective studies. There is suggestive evidence that active travel may have a positive effect on diabetes prevention, which may be an important area for future research. CONCLUSIONS: Active travel may have positive effects on health outcomes, but there is little robust evidence to date of the effectiveness of active transport interventions for reducing obesity. Future evaluations of such

  13. The Seduction of Sarah: Travel Memoirs and Intercultural Learning

    Directory of Open Access Journals (Sweden)

    Barbara Elizabeth Hanna

    2006-09-01

    Full Text Available The paper explores the nexus between intercultural storytelling and intercultural learning. Noting the wide appeal of the travel memoir set in France, it takes as a case study a book that, while positioned within that genre, attempts to shift some predictable patterns: Sarah Turnbull’s best-selling Almost French. Analysis shows that the book in fact participates in a subtle play of genres, whereby the lure of the travel memoir is used to entice readers towards a position where they read the book as a guide to French culture. The particular form of hybridity attempted is, however, a delicate enterprise, as the reception of the book demonstrates, in that the intercultural lessons on offer risk being overshadowed by the expectations readers bring to the genre of the travel memoir. The paper examines the competing seductions operating throughout the text and relates the conditions for taking up the opportunity for intercultural learning to questions of genre. It offers a pedagogical uptake of the textual analysis, thus bridging disciplines in a way that mirrors Turnbull’s bridging of genres.

  14. The General Traveling Salesman Problem

    CERN Document Server

    Kleiman, Howard

    2011-01-01

    This is concerned with essentially two ways in which to construct algorithms for obtaining both approximate and exact solutions to the general traveling salesman problem (GTSP)(the triangle equality need not be satisfied). The first uses an arbitrary n-cycle to permute the columns of an n X n matrix with weighted entries. In doing so, we obtain negative entries. Using these entries, we from negative cycles. We give a formula for the length of cycles necessary to obtain an n-cycle by patching. Using patching of negative cycles, we obtain an n-cycle. The second portion of the algorithm gives procedures for obtain an exact solution to the GTSP. Our second algorithm uses the average arc-value (aav) of a path. We first obtain an n-cycle in a manner similar to that in the first algorithm. Call this T_UPPERBOUND. We then construct paths each of which has an aav less than that of T_UPPERBOUND. Using parallel programming, we construct all paths whose values are less than that of T_UPPERBOUND. Then either we obtain an ...

  15. On Labeled Traveling Salesman Problems

    DEFF Research Database (Denmark)

    Couetoux, Basile; Gourves, Laurent; Monnot, Jerome

    2008-01-01

    We consider labeled Traveling Salesman Problems, defined upon a complete graph of n vertices with colored edges. The objective is to find a tour of maximum (or minimum) number of colors. We derive results regarding hardness of approximation, and analyze approximation algorithms for both versions...... of the problem. For the maximization version we give a -approximation algorithm and show that it is APX-hard. For the minimization version, we show that it is not approximable within n 1 − ε for every ε> 0. When every color appears in the graph at most r times and r is an increasing function of n the problem...... is not O(r 1 − ε )-approximable. For fixed constant r we analyze a polynomial-time (r + H r )/2-approximation algorithm (H r is the r-th harmonic number), and prove APX-hardness. Analysis of the studied algorithms is shown to be tight....

  16. Travels with the Fossil Hunters

    Science.gov (United States)

    Whybrow, Peter J.

    2000-04-01

    Whether dodging bullets in West Africa, or rabid dogs in Pakistan, surviving yak-butter tea in Tibet, or eating raw fish in China, the life of a globe-trotting fossil hunter is often hazardous and always filled with surprises. Travels with the Fossil Hunters lets readers share the wonder, joys of discovery, and excitement of these intrepid scientists. Packed with more than 100 beautiful, full-color photographs, the volume takes readers on twelve expeditions to remote parts of the world in search of diverse fossil remains, from those of dinosaurs to human ancestors. Each expedition by paleontologists from London's Natural History Museum reveals the problems and challenges of working in extreme conditions, from the deserts of the Sahara and Yemen to the frozen wastes of Antarctica, from the mountains of India to the forests of Latvia. Along the way they also describe the paleontology and geology of the countries they visit and the scientific reasons for their expeditions. With a foreword from Sir David Attenborough and an introduction from Richard Fortey, this fascinating book will appeal to amateur and professional fossil hunters alike and to readers interested in accounts of exotic locales. Peter Whybrow is a research scientist at the Natural History Museum, London. His research interests include Arabian Miocene vertebrates, paleoclimates, paleogeography, and biotic diversity. He is senior editor with A. Hill of Fossil Vertebrates of Arabia (Yale University Press, New Haven, 1999).

  17. Interstellar Travel. (Latest citations from the Aerospace Database)

    Science.gov (United States)

    1996-01-01

    The bibliography contains citations concerning travel between the stars. Topics include cost considerations, hyperspace navigation, exploration, and propulsion systems for vehicles to be used in interstellar travel. Human factor issues and social aspects of interstellar travel are also discussed.

  18. Travel and migration associated infectious diseases morbidity in Europe, 2008

    NARCIS (Netherlands)

    Field, V.; Gautret, P.; Schlagenhauf, P.; Burchard, G.D.; Caumes, E.; Jensenius, M.; Castelli, F.; Gkrania-Klotsas, E.; Weld, L.; Lopez-Velez, R.; de Vries, P.; von Sonnenburg, F.; Loutan, L.; Parola, P.

    2010-01-01

    Background: Europeans represent the majority of international travellers and clinicians encountering returned patients have an essential role in recognizing, and communicating travel-associated public health risks. Methods: To investigate the morbidity of travel associated infectious diseases in

  19. Travel and migration associated infectious diseases morbidity in Europe, 2008

    NARCIS (Netherlands)

    Field, V.; Gautret, P.; Schlagenhauf, P.; Burchard, G.D.; Caumes, E.; Jensenius, M.; Castelli, F.; Gkrania-Klotsas, E.; Weld, L.; Lopez-Velez, R.; de Vries, P.; von Sonnenburg, F.; Loutan, L.; Parola, P.

    2010-01-01

    Background: Europeans represent the majority of international travellers and clinicians encountering returned patients have an essential role in recognizing, and communicating travel-associated public health risks. Methods: To investigate the morbidity of travel associated infectious diseases in Eur

  20. Traveling with children: beyond car seat safety.

    Science.gov (United States)

    Polli, Janaina Borges; Polli, Ismael

    2015-01-01

    To spread knowledge and instigate the health professional to give advice on childcare during travels and on child transport safety. Literature review through the LILACS and MEDLINE(®) databases, using the terms: travel, safety, protective equipment, child, preventive medicine, retrieving articles published in the last 21 years. The authors analyzed 93 articles, of which 66 met the inclusion criteria after summaries were read. For drafting this article, the following sub-themes were proposed: getting ready to travel with children; knowing some of the transfer risks (air, land and water transportation) and exploring the destination with children (sun exposure, accommodations, altitude, food, traveler's diarrhea, insect bites) and return from the trip with children. Over the years, there has been an increase in the number of children who travel around the world. However, this population is still subject to health problems while traveling and may be even more susceptible than the adult age group. These problems arise from a variety of factors, including exposure to infectious organisms, the use of certain types of transportation, and participation in some activities, such as hiking at high altitudes, among others. However, when traveling with children, these risk factors can be overlooked; a trip that is considered safe for an adult might not be a good choice for this age group. The pediatric consultation should be a good opportunity to optimize preventive guidelines at the pre-trip planning. Copyright © 2015 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.

  1. Functional features of travel magazines: retrospective view

    Directory of Open Access Journals (Sweden)

    Gromova Lyudmila Petrovna

    2015-09-01

    Full Text Available The article considers the features of the functional purpose of travel magazines (travelogue, their genesis, evolution, traits, depending on the socio-political context and, accordingly, requests from the readership. The progenitor of the travel magazines in Russia was journey literature that took root in the genre of travel notes. The forerunner of today’s travelogues can be considered «Nikita Akinfievich Demidov’s travel magazine» (1786, presenting daily travel notes, mostly laconic, sometimes deployed to fascinating travel notes Magazines at different times performed cultural and educational, didactic, aesthetic and ideological functions, immersing the reader in the living conditions of the countries and continents, showing the diversity of the world. Today, traveling is seen as a multifaceted activity that is due to the result of freedom of movement, numerous hiking trails, access to information in the network space takes new character. Accordingly, the media market is a process of qualitative and quantitative changes. There is a growing number of distribution channels, many of which are convergent evolution. The transformation of the old forms is determined by market demand. These processes are inevitably reflected in the dominance of certain functions of the travelogue. However, their essential purpose remains the same: to inform, educate and entertain.

  2. Multimodal Network Equilibrium with Stochastic Travel Times

    Directory of Open Access Journals (Sweden)

    M. Meng

    2014-01-01

    Full Text Available The private car, unlike public traffic modes (e.g., subway, trolley running along dedicated track-ways, is invariably subject to various uncertainties resulting in travel time variation. A multimodal network equilibrium model is formulated that explicitly considers stochastic link capacity variability in the road network. The travel time of combined-mode trips is accumulated based on the concept of the mean excess travel time (METT which is a summation of estimated buffer time and tardy time. The problem is characterized by an equivalent VI (variational inequality formulation where the mode choice is expressed in a hierarchical logit structure. Specifically, the supernetwork theory and expansion technique are used herein to represent the multimodal transportation network, which completely represents the combined-mode trips as constituting multiple modes within a trip. The method of successive weighted average is adopted for problem solutions. The model and solution method are further applied to study the trip distribution and METT variations caused by the different levels of the road conditions. Results of numerical examples show that travelers prefer to choose the combined travel mode as road capacity decreases. Travelers with different attitudes towards risk are shown to exhibit significant differences when making travel choice decisions.

  3. Globalization of leptospirosis through travel and migration.

    Science.gov (United States)

    Bandara, Medhani; Ananda, Mahesha; Wickramage, Kolitha; Berger, Elisabeth; Agampodi, Suneth

    2014-08-12

    Leptospirosis remains the most widespread zoonotic disease in the world, commonly found in tropical or temperate climates. While previous studies have offered insight into intra-national and intra-regional transmission, few have analyzed transmission across international borders. Our review aimed at examining the impact of human travel and migration on the re-emergence of Leptospirosis. Results suggest that alongside regional environmental and occupational exposure, international travel now constitute a major independent risk factor for disease acquisition. Contribution of travel associated leptospirosis to total caseload is as high as 41.7% in some countries. In countries where longitudinal data is available, a clear increase of proportion of travel-associated leptospirosis over the time is noted. Reporting patterns is clearly showing a gross underestimation of this disease due to lack of diagnostic facilities. The rise in global travel and eco-tourism has led to dramatic changes in the epidemiology of Leptospirosis. We explore the obstacles to prevention, screening and diagnosis of Leptopirosis in health systems of endemic countries and of the returning migrant or traveler. We highlight the need for developing guidelines and preventive strategies of Leptospirosis related to travel and migration, including enhancing awareness of the disease among health professionals in high-income countries.

  4. International Marketing & Relations of MATKA Travel Fair in Helsinki

    OpenAIRE

    Kharel, Suraj

    2015-01-01

    This Bachelor’s thesis was done in order to know about the international marketing and atmosphere of MATKA Nordic Travel Fair in Helsinki. The topic of this thesis International Marketing & Relations of MATKA Travel Fair in Helsinki itself is an interesting topic. It shows how international atmosphere and marketing is done in MATKA Nordic Travel Fair and international atmosphere in MATKA Nordic Travel Fair. The MATKA Nordic Travel Fair in Helsinki is only one of the biggest travel fair in Fin...

  5. HIV in elderly women after travelling abroad

    DEFF Research Database (Denmark)

    Jespersen, Sanne; Thorsteinsson, Kristina; David, Kim Peter

    2016-01-01

    We report two cases of HIV infection among female travellers of older age. A Danish woman in her eighties was diagnosed with acute HIV infection after travelling to West Africa. A sexual history was not recorded before her third hospital visit. A West African woman in her seventies who had been...... living in Denmark for 40 years was diagnosed with advanced HIV after having been to West Africa for family visits. We want to emphasize that women of older age also have sex that may put them at risk of HIV, that febrile returning travellers should be tested for HIV, and that presence of HIV indicator...... diseases should lead to HIV testing....

  6. Ocean acoustic tomography - Travel time biases

    Science.gov (United States)

    Spiesberger, J. L.

    1985-01-01

    The travel times of acoustic rays traced through a climatological sound-speed profile are compared with travel times computed through the same profile containing an eddy field. The accuracy of linearizing the relations between the travel time difference and the sound-speed deviation at long ranges is assessed using calculations made for two different eddy fields measured in the eastern Atlantic. Significant nonlinearities are found in some cases, and the relationships of the values of these nonlinearities to the range between source and receiver, to the anomaly size associated with the eddies, and to the positions of the eddies are studied. An analytical model of the nonlinearities is discussed.

  7. Representation of Central Asia and Traveling Self in Vambery’s Travels in Central Asia

    Directory of Open Access Journals (Sweden)

    Ahmad Gholi

    2016-03-01

    Full Text Available In the course of the nineteenth century Arminius Vambery, an anglophile travel writer, in the guise of a mendicant dervish with a group of Tartar pilgrims departs to secluded and sealed Central Asia. After six months travel in the Khanates of Central Asia, he undertakes a journey to England where he offers his observations to the Royal Geographical Society and publishes his travelogue, Travel in Central Asia. Despite its literary merits and connection with British imperialism, the travelogue has not been scrutinized separately by the scholars of travel writing. To fill the gap, this article by drawing on the theories of post-structuralism: Orientalism and Postcolonialism, endeavors to unveil the political agenda behind the travel writer’s representation of his travelees, destination, and his own traveling self. Additionally, it argues that the travel writer in dialogue with other Western travel writers to deterritorialize his traversed region or justify the prospective presence of Britain in Central Asia, represents his journey destination as the locus of barbarity, a region under the grip of despotic rulers, as well as an area with frozen time, while to exhibit his Eurocentrism, he portrays his traveling subject as the a suffering hero and a benign traveler.

  8. Model of traveling ionospheric disturbances

    Directory of Open Access Journals (Sweden)

    Fedorenko Yury P.

    2013-10-01

    Full Text Available A multiscale semi-empirical model of traveling ionospheric disturbances (TIDs is developed. The model is based on the following assumptions: (1 TIDs are generated by acoustic-gravity waves (AGWs and propagate as pressure waves; (2 time intervals between adjacent extrema of atmospheric pressure oscillations in a disturbance source are constant; (3 the pressure extrema propagate from the source up to ~14 000 km at a constant horizontal velocity; (4 the velocity of each extremum is determined only by its number in a TID train. The model was validated using literature data on disturbances generated by about 20 surface and high-altitude nuclear explosions, two volcano explosions, one earthquake and by energetic proton precipitation events in the magnetospheric cusp of the northern hemisphere. Model tests using literature data show that the spatial and temporal TID periods may be predicted with an accuracy of 12%. Adequacy of the model was also confirmed by our observations collected using transionospheric sounding. The following TID parameters: amplitudes, horizontal spatial periods, and a TID front inclination angle in a vertical plane are increasing as the distance between an AGW and the excitation source is increasing. Diurnal and seasonal variability of the TID occurrence, defined as ratio of TID events to the total number of observations for the corresponding period, is not observed. However, the TID occurrence was growing from ~50% in 1987 to ~98% in 2010. The results of other studies asserting that the TID occurrence does not depend on the number of sunspots and magnetic activity are confirmed. The TID occurrence has doubled over the period from 1987 to 2010 indicating increasing solar activity which is not associated with sunspot numbers. The dynamics of spatial horizontal periods was studied in a range of 150–35 000 km.

  9. Fundamentals of traveling wave ion mobility spectrometry.

    Science.gov (United States)

    Shvartsburg, Alexandre A; Smith, Richard D

    2008-12-15

    Traveling wave ion mobility spectrometry (TW IMS) is a new IMS method implemented in the Synapt IMS/mass spectrometry system (Waters). Despite its wide adoption, the foundations of TW IMS were only qualitatively understood and factors governing the ion transit time (the separation parameter) and resolution remained murky. Here we develop the theory of TW IMS using derivations and ion dynamics simulations. The key parameter is the ratio (c) of ion drift velocity at the steepest wave slope to wave speed. At low c, the ion transit velocity is proportional to the squares of mobility (K) and electric field intensity (E), as opposed to linear scaling in drift tube (DT) IMS and differential mobility analyzers. At higher c, the scaling deviates from quadratic in a way controlled by the waveform profile, becoming more gradual with the ideal triangular profile but first steeper and then more gradual for realistic profiles with variable E. At highest c, the transit velocity asymptotically approaches the wave speed. Unlike with DT IMS, the resolving power of TW IMS depends on mobility, scaling as K(1/2) in the low-c limit and less at higher c. A nonlinear dependence of the transit time on mobility means that the true resolving power of TW IMS differs from that indicated by the spectrum. A near-optimum resolution is achievable over an approximately 300-400% range of mobilities. The major predicted trends are in agreement with TW IMS measurements for peptide ions as a function of mobility, wave amplitude, and gas pressure. The issues of proper TW IMS calibration and ion distortion by field heating are also discussed. The new quantitative understanding of TW IMS separations allows rational optimization of instrument design and operation and improved spectral calibration.

  10. EXACT TRAVELLING WAVE SOLUTIONS TO BBM EQUATION

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Abundant new travelling wave solutions to the BBM (Benjamin-Bona-Mahoni) equation are obtained by the generalized Jacobian elliptic function method. This method can be applied to other nonlinear evolution equations.

  11. Global malaria connectivity through air travel

    National Research Council Canada - National Science Library

    Huang, Zhuojie; Tatem, Andrew J

    2013-01-01

    Air travel has expanded at an unprecedented rate and continues to do so. Its effects have been seen on malaria in rates of imported cases, local outbreaks in non-endemic areas and the global spread of drug resistance...

  12. Travelers to Europe Need Measles Protection: CDC

    Science.gov (United States)

    ... news/fullstory_167325.html Travelers to Europe Need Measles Protection: CDC 15 countries have reported outbreaks so ... Europe should take steps to protect themselves against measles, the U.S. Centers for Disease Control and Prevention ...

  13. Dynamics Calculation of Travel Wave Tube

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    During the dynamics calculating of the travel tube, we must obtain the field map in the tube. The field map can be affected by not only the beam loading, but also the attenuation coefficient. The calculation of the attenuation coefficient

  14. the Cecil John Adams Travelling Fellowship

    African Journals Online (AJOL)

    1994-09-14

    Sep 14, 1994 ... founded the Cecil John Adams Travelling Fellowship Trust in 1945. (photograph taken .... awards have been made to 137 people. ... Dr Alexander (Sandy) A. Brown. He and Dr T. .... think of a suitable means of achieving this.

  15. Measuring inaccuracy in travel demand forecasting

    DEFF Research Database (Denmark)

    Flyvbjerg, Bent

    2005-01-01

    Project promoters, forecasters, and managers sometimes object to two things in measuring inaccuracy in travel demand forecasting: (1)using the forecast made at the time of making the decision to build as the basis for measuring inaccuracy and (2)using traffic during the first year of operations...... as the basis for measurement. This paper presents the case against both objections. First, if one is interested in learning whether decisions about building transport infrastructure are based on reliable information, then it is exactly the traffic forecasted at the time of making the decision to build...... in travel demand forecasts are likely to be conservatively biased, i.e., accuracy in travel demand forecasts estimated from such samples would likely be higher than accuracy in travel demand forecasts in the project population. This bias must be taken into account when interpreting the results from...

  16. Travelers' Health: Animal-Associated Hazards

    Science.gov (United States)

    ... Visiting Friends and Family in Areas with Chikungunya, Dengue, or Zika Visiting Friends or Family in an ... to sustain more severe injuries from animal bites. Prevention Before departure, travelers should have a current tetanus ...

  17. Traveling baseball players' problem in Korea

    Science.gov (United States)

    Jeong, Hyang Min; Kim, Sang-Woo; Choi, Younguk; Kim, Aaram J.; Eun, Jonghyoun; Kim, Beom Jun

    2012-08-01

    We study the so-called traveling tournament problem (TTP) to find an optimal tournament schedule. Differently from the original TTP, in which the total travel distance of all the participants is the objective function to minimize, we instead seek to maximize the fairness of the round robin tournament schedule of the Korean Baseball League. The standard deviation of the travel distances of teams is defined as the energy function, and the Metropolis Monte-Carlo method combined with the simulated annealing technique is applied to find the ground-state configuration. The resulting tournament schedule is found to satisfy all the constraint rules set by the Korean Baseball Organization, but with drastically increased fairness in traveling distances.

  18. Fever of unknown origin in returning travellers.

    Science.gov (United States)

    Korzeniewski, Krzysztof; Gaweł, Bartłomiej; Krankowska, Dagny; Wasilczuk, Katarzyna

    2015-01-01

    The aim of the article is to discuss issues associated with the occurrence of febrile illnesses in leisure and business travellers, with a particular emphasis on fevers of unknown origin (FUO). FUO, apart from diarrhoeas, respiratory tract infections and skin lesions, are one of the most common health problems in travellers to tropical and subtropical countries. FUO are manifestations of various diseases, typically of infectious or invasive aetiology. In one out of 3 cases, the cause of a fever in travellers returning from the hot climate zone is malaria, and therefore diagnostic tests should first aim at ruling out this specific disease entity. Other illnesses with persistent fever include dengue, enteric fever, viral hepatitis A, bacterial diarrhoeas and rickettsioses. Fever may also occur in travellers suffering from diseases of non-tropical origin, e.g. cosmopolitan respiratory tract or urinary tract infections, also, fever may coexist with other illnesses or injuries (skin rashes, bites, burns).

  19. Highway travel time estimation with data fusion

    CERN Document Server

    Soriguera Martí, Francesc

    2016-01-01

    This monograph presents a simple, innovative approach for the measurement and short-term prediction of highway travel times based on the fusion of inductive loop detector and toll ticket data. The methodology is generic and not technologically captive, allowing it to be easily generalized for other equivalent types of data. The book shows how Bayesian analysis can be used to obtain fused estimates that are more reliable than the original inputs, overcoming some of the drawbacks of travel-time estimations based on unique data sources. The developed methodology adds value and obtains the maximum (in terms of travel time estimation) from the available data, without recurrent and costly requirements for additional data. The application of the algorithms to empirical testing in the AP-7 toll highway in Barcelona proves that it is possible to develop an accurate real-time, travel-time information system on closed-toll highways with the existing surveillance equipment, suggesting that highway operators might provide...

  20. E3 Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — ETRAMS is a travel data collection system developed by the CKM team in E3 that collects information on both the basic details of an employee's trips (destination,...