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Sample records for bethe-weizsaecker relation

  1. Relativity

    NASA Astrophysics Data System (ADS)

    Stephani, Hans

    2004-02-01

    Preface; Notation; Part I. Special Relativity: 1. Introduction: inertial systems and Galilei invariance of classical mechanics; 2. Light propagation in moving coordinate systems and Lorentz transformations; 3. Our world as a Minkowski space; 4. Mechanics of special relativity; 5. Optics of plane waves; 6. Four-dimensional vectors and tensors; 7. Electrodynamics in vacuo; 8. Transformation properties of electromagnetic fields: examples; 9. Null vectors and the algebraic properties of electromagnetic field tensors; 10. Charged point particles and their field; 11. Pole-dipole particles and their field; 12. Electrodynamics in media; 13. Perfect fluids and other physical theories; Part II. Riemannian Geometry: 14. Introduction: the force-free motion of particles in Newtonian mechanics; 15. Why Riemannian geometry?; 16. Riemannian space; 17. Tensor algebra; 18. The covariant derivative and parallel transport; 19. The curvature tensor; 20. Differential operators, integrals and integral laws; 21. Fundamental laws of physics in Riemannian spaces; Part III. Foundations of Einstein's Theory of Gravitation: 22. The fundamental equations of Einstein's theory of gravitation; 23. The Schwarzschild solution; 24. Experiments to verify the Schwarzschild metric; 25. Gravitational lenses; 26. The interior Schwarzschild solution; Part IV. Linearized Theory of Gravitation, Far Fields and Gravitational Waves: 27. The linearized Einstein theory of gravity; 28. Far fields due to arbitrary matter distributions and balance equations for momentum and angular momentum; 29. Gravitational waves; 30. The Cauchy problem for the Einstein field equations; Part V. Invariant Characterization of Exact Solutions: 31. Preferred vector fields and their properties; 32. The Petrov classification; 33. Killing vectors and groups of motion; 34. A survey of some selected classes of exact solutions; Part VI. Gravitational Collapse and Black Holes: 35. The Schwarzschild singularity; 36. Gravitational collapse

  2. Relational Programming.

    DTIC Science & Technology

    1983-09-01

    EXERCISES: Factor V out of the definition of join. 13. Aucestral Dilationu 13.1 denfimkon Carnap [Carnap58] defines the relation of a property p...the utrueture function Carnap [Carnap58] defines two relations to be isomorphic when there is a biunivalent relation between their members that...its algebra of programs, CACM 21, 8 (August 1978), 613-641. [Carnap58] Carnap , R. Introduction to Synbolic Logic and its Appications, Dover, 1958

  3. Public Relations.

    ERIC Educational Resources Information Center

    Campbell, Cathy

    This guide offers Catholic Church professionals and school leaders background and basic tools for implementing a workable and effective public relations program in a local school setting. The first section, devoted to detailing the necessary preparations for beginning a public relations program, tells about the following: forming a public…

  4. Numerical Relativity

    NASA Technical Reports Server (NTRS)

    Baker, John G.

    2009-01-01

    Recent advances in numerical relativity have fueled an explosion of progress in understanding the predictions of Einstein's theory of gravity, General Relativity, for the strong field dynamics, the gravitational radiation wave forms, and consequently the state of the remnant produced from the merger of compact binary objects. I will review recent results from the field, focusing on mergers of two black holes.

  5. Numerical Relativity

    NASA Technical Reports Server (NTRS)

    Baker, John G.

    2009-01-01

    Recent advances in numerical relativity have fueled an explosion of progress in understanding the predictions of Einstein's theory of gravity, General Relativity, for the strong field dynamics, the gravitational radiation wave forms, and consequently the state of the remnant produced from the merger of compact binary objects. I will review recent results from the field, focusing on mergers of two black holes.

  6. Relational Leadership.

    ERIC Educational Resources Information Center

    Dyer, Karen M.

    2001-01-01

    Describes the attributes and benefits of relational leadership. Also lists six competencies of relational leadership developed by the Center for Creative Leadership in Greensboro, North Carolina: Leading employees, interpersonal savvy, work-team orientation, conflict management, managing change in others, and effectively confronting problem…

  7. Relational Blackboard

    SciTech Connect

    Abbott, Robert G

    2012-09-11

    The Relational Blackboard (RBB) is an extension of the H2 Relational Database to support discrete events and timeseries data. The original motivation for RBB is as a knowledge base for cognitive systems and simulations. It is useful wherever there is a need for persistent storage of timeseries (i.e. samples of a continuous process generating numerical data) and semantic labels for the data. The RBB is an extension to the H2 Relational Database, which is open-source. RBB is a set of stored procedures for H2 allowing data to be labeled, queried, and resampled.

  8. Relational Blackboard

    SciTech Connect

    Abbott, Robert G

    2012-09-11

    The Relational Blackboard (RBB) is an extension of the H2 Relational Database to support discrete events and timeseries data. The original motivation for RBB is as a knowledge base for cognitive systems and simulations. It is useful wherever there is a need for persistent storage of timeseries (i.e. samples of a continuous process generating numerical data) and semantic labels for the data. The RBB is an extension to the H2 Relational Database, which is open-source. RBB is a set of stored procedures for H2 allowing data to be labeled, queried, and resampled.

  9. Relative Age

    NASA Image and Video Library

    2010-06-04

    In some regions of Mars the relative ages of different materials can be determined. In this image, captured by NASA 2001 Mars Odyssey, the younger lava flows of Daedalia Planum are on top of the older Terra Sirenum materials.

  10. Linguistic relativity.

    PubMed

    Wolff, Phillip; Holmes, Kevin J

    2011-05-01

    The central question in research on linguistic relativity, or the Whorfian hypothesis, is whether people who speak different languages think differently. The recent resurgence of research on this question can be attributed, in part, to new insights about the ways in which language might impact thought. We identify seven categories of hypotheses about the possible effects of language on thought across a wide range of domains, including motion, color, spatial relations, number, and false belief understanding. While we do not find support for the idea that language determines the basic categories of thought or that it overwrites preexisting conceptual distinctions, we do find support for the proposal that language can make some distinctions difficult to avoid, as well as for the proposal that language can augment certain types of thinking. Further, we highlight recent evidence suggesting that language may induce a relatively schematic mode of thinking. Although the literature on linguistic relativity remains contentious, there is growing support for the view that language has a profound effect on thought. WIREs Cogni Sci 2011 2 253-265 DOI: 10.1002/wcs.104 For further resources related to this article, please visit the WIREs website.

  11. Employee relations.

    PubMed

    Demann, Eric T K; Stein, Pamela S; Levitt, Christine; Shelton, Keith E

    2008-07-01

    This review highlights some of the more important employee relation aspects involved in starting, establishing, or expanding an existing dental practice. Despite a competitive compensation package, staff-related conflicts can sometimes hamper the progress of a dental practice. Such conflicts can be reduced by having policies and procedures in place for each employee that set expectations concerning the hours of operation, professional manner, dress code, job tasks, performance evaluations, disciplinary actions, and termination if violations occur. Understanding the legal requirements set by various governmental agencies such as OSHA can help ensure that the rights and well-being of every employee are protected.

  12. Testing Relativity

    NASA Astrophysics Data System (ADS)

    Hentschel, Klaus

    in chapter 7 of this book, Klaus Hentschel first reviews Einstein's general attitude towards experiments, much more positive than generally believed, then reviews experimental tests of both special and general relativity, focussing on tests during Einstein's lifetime, incl. gravitational redshift, light deflection, perihelion motion. Among the non-standard tests, time-delay measurements, gyroscope experiments, the Nordtvedt effect, and gravitational waves are also discussed.

  13. Bracket relations for relativity groups

    NASA Astrophysics Data System (ADS)

    Jordan, Thomas F.

    2016-11-01

    Poisson bracket relations for generators of canonical transformations are derived directly from the Galilei and Poincaré groups of space-time coordinate changes. The method is simple but rigorous. The meaning of each step is clear, because it corresponds to an operation in the group of changes of space-time coordinates. Only products and inverses are used; differences are not used. It is made explicitly clear why constants occur in some bracket relations but not in others and how some constants can be removed, so that in the end there is a constant in the bracket relations for the Galilei group but not for the Poincaré group. Each change of coordinates needs to be only to first order, so matrices are not needed for rotations or Lorentz transformations; simple three-vector descriptions are enough. Conversion to quantum mechanics is immediate. One result is a simpler derivation of the commutation relations for angular momentum directly from rotations. Problems are included.

  14. A relation merging technique for relational databases

    SciTech Connect

    Markowitz, V.M.

    1992-02-01

    Relation merging is employed in relational databases in order to reduce the need for joining relations. Merging, however, can create unnormalized relations. In this paper we propose a merging technique that preserves the high (Boyce-Codd) normal form of relational schemas consisting of relation-schemes, key dependencies, referential integrity constraints, and null constraints. The additional constraints generated by this merging technique can be effectively maintained using the mechanisms provided by several relational database management systems.

  15. Visualizing relativity: The OpenRelativity project

    NASA Astrophysics Data System (ADS)

    Sherin, Zachary W.; Cheu, Ryan; Tan, Philip; Kortemeyer, Gerd

    2016-05-01

    We present OpenRelativity, an open-source toolkit to simulate effects of special relativity within the popular Unity game engine. Intended for game developers, educators, and anyone interested in physics, OpenRelativity can help people create, test, and share experiments to explore the effects of special relativity. We describe the underlying physics and some of the implementation details of this toolset with the hope that engaging games and interactive relativistic "laboratory" experiments might be implemented.

  16. The evolution of relativity.

    NASA Astrophysics Data System (ADS)

    Ray, C.

    Contents: Introduction. 1. Ernst Mach and the search for simplicity. 2. The foundations of the general theory of relativity. 3. Mainstream classical relativity. 4. Classical and quantum relativity. 5. Relativity - dead or alive?

  17. Consistency relation in cosmology

    SciTech Connect

    Chiba, Takeshi; Takahashi, Ryuichi

    2007-05-15

    We provide a consistency relation between cosmological observables in general relativity without relying on the equation of state of dark energy. The consistency relation should be satisfied if general relativity is the correct theory of gravity and dark energy clustering is negligible. As an extension, we also provide the DGP counterpart of the relation.

  18. Tests Related to Pregnancy

    MedlinePlus

    ... to learn. Search form Search Tests related to pregnancy You are here Home Testing & Services Testing for ... to Genetic Counseling . What Are Tests Related to Pregnancy? Pregnancy related testing is done before or during ...

  19. Relative entropy equals bulk relative entropy

    SciTech Connect

    Jafferis, Daniel L.; Lewkowycz, Aitor; Maldacena, Juan; Suh, S. Josephine

    2016-06-01

    We consider the gravity dual of the modular Hamiltonian associated to a general subregion of a boundary theory. We use it to argue that the relative entropy of nearby states is given by the relative entropy in the bulk, to leading order in the bulk gravitational coupling. We also argue that the boundary modular flow is dual to the bulk modular flow in the entanglement wedge, with implications for entanglement wedge reconstruction.

  20. Complexity and Relations

    ERIC Educational Resources Information Center

    Lancaster, Jeanette Elizabeth

    2013-01-01

    A central feature of complexity is that it is based on non-linear, recursive relations. However, in most current accounts of complexity such relations, while non-linear, are based on the reductive relations of a Newtonian onto-epistemological framework. This means that the systems that are emergent from the workings of such relations are a…

  1. Complexity and Relations

    ERIC Educational Resources Information Center

    Lancaster, Jeanette Elizabeth

    2013-01-01

    A central feature of complexity is that it is based on non-linear, recursive relations. However, in most current accounts of complexity such relations, while non-linear, are based on the reductive relations of a Newtonian onto-epistemological framework. This means that the systems that are emergent from the workings of such relations are a…

  2. Probability and Relative Frequency

    NASA Astrophysics Data System (ADS)

    Drieschner, Michael

    2016-01-01

    The concept of probability seems to have been inexplicable since its invention in the seventeenth century. In its use in science, probability is closely related with relative frequency. So the task seems to be interpreting that relation. In this paper, we start with predicted relative frequency and show that its structure is the same as that of probability. I propose to call that the `prediction interpretation' of probability. The consequences of that definition are discussed. The "ladder"-structure of the probability calculus is analyzed. The expectation of the relative frequency is shown to be equal to the predicted relative frequency. Probability is shown to be the most general empirically testable prediction.

  3. Measuring Relative Humidity.

    ERIC Educational Resources Information Center

    Pinkham, Chester A.; Barrett, Kristin Burrows

    1992-01-01

    Describes four experiments that enable students to explore the phenomena of evaporation and condensation and determine the relative humidity by measuring air temperature and dew point on warm September days. Provides tables to calculate saturation points and relative humidity. (MDH)

  4. Measuring Relative Humidity.

    ERIC Educational Resources Information Center

    Pinkham, Chester A.; Barrett, Kristin Burrows

    1992-01-01

    Describes four experiments that enable students to explore the phenomena of evaporation and condensation and determine the relative humidity by measuring air temperature and dew point on warm September days. Provides tables to calculate saturation points and relative humidity. (MDH)

  5. Admissions and Public Relations

    ERIC Educational Resources Information Center

    Huddleston, Thomas

    1974-01-01

    Discusses the present limitations of public-relations operations within college admissions offices. Suggests a more active role for public relations specialists and better familiarization with the goals and functions of the admissions office. (Author/PC)

  6. Down to earth relativity

    NASA Technical Reports Server (NTRS)

    Shapiro, I. I.

    1978-01-01

    The basic concepts of the special and general theories of relativity are described. Simple examples are given to illustrate the effect of relativity on measurements of time and frequency in the near-earth environment.

  7. Contact Relations with Applications

    NASA Astrophysics Data System (ADS)

    Schmidt, Gunther; Berghammer, Rudolf

    Using relation algebra, we generalize Aumann’s notion of a contact relation and that of a closure operation from powersets to general membership relations and their induced partial orders. We also investigate the relationship between contacts and closures in this general setting and use contacts to establish a one-to-one correspondence between the column space and the row space of a relation.

  8. Educational Public Relations.

    ERIC Educational Resources Information Center

    West, Philip T.

    The first quarter of this textbook on public relations in the public school setting reviews the topic and informs educators about the potential public relations problems and opportunities that could face them in the foreseeable future. An introduction and four chapters cover (1) the history of public relations; (2) the elements of public…

  9. Educational Public Relations.

    ERIC Educational Resources Information Center

    West, Philip T.

    The first quarter of this textbook on public relations in the public school setting reviews the topic and informs educators about the potential public relations problems and opportunities that could face them in the foreseeable future. An introduction and four chapters cover (1) the history of public relations; (2) the elements of public…

  10. The Fundamental Property Relation.

    ERIC Educational Resources Information Center

    Martin, Joseph J.

    1983-01-01

    Discusses a basic equation in thermodynamics (the fundamental property relation), focusing on a logical approach to the development of the relation where effects other than thermal, compression, and exchange of matter with the surroundings are considered. Also demonstrates erroneous treatments of the relation in three well-known textbooks. (JN)

  11. Relative Autonomy Reconstructed. Revised.

    ERIC Educational Resources Information Center

    Reynolds, Jim

    The British school system has relative autonomy, and therefore, could be potentially transformative--used to change existing economic and social relations. The correspondence thesis, which states that the schools perpetuate existing capitalist economic and social relations and serve as agents of reproduction, was the dominant paradigm of the last…

  12. Assessing Public Relations Efforts

    ERIC Educational Resources Information Center

    Slocum, Doris; Johnson, T. Earle, Jr.

    1977-01-01

    The need to establish goals and objectives for public relations activities is discussed, followed by descriptions of several evaluation techniques for public relations programs. The continuous education of faculty regarding costs and logistics of publicity, and long-term continuity in the public relations effort are stressed as essential elements…

  13. Assessing Public Relations Efforts

    ERIC Educational Resources Information Center

    Slocum, Doris; Johnson, T. Earle, Jr.

    1977-01-01

    The need to establish goals and objectives for public relations activities is discussed, followed by descriptions of several evaluation techniques for public relations programs. The continuous education of faculty regarding costs and logistics of publicity, and long-term continuity in the public relations effort are stressed as essential elements…

  14. Cosmological relativity: A special relativity for cosmology

    NASA Astrophysics Data System (ADS)

    Carmeli, M.

    1995-07-01

    Under the assumption that Hubble's constant H0 is constant in cosmic time, there is an analogy between the equation of propagation of light and that of expansion of the universe. Using this analogy, and assuming that the laws of physics are the same at all cosmic times, a new special relativity, a cosmological relativity, is developed. As a result, a transformation is obtained that relates physical quantities at different cosmic times. In a one-dimensional motion, the new transformation is given by 10701_2005_Article_BF02059524_TeX2GIFE1.gif x' = {x - Tv}/{(1 - T^2 /T_0^2 )^{{1 / 2}}v' = {v - xT/T_0^2 }/{(1 - T^2 /T_0^2 )^{{1 /2 }} where x and v are the coordinate and velocity, T is the cosmic time measured backward with respect to our present time T=0, tand T0 is Hubble's time. Some consequences of this transformation are given, and its applicability limitation is pointed out.

  15. Relative Risk Aversion.

    DTIC Science & Technology

    1981-01-01

    strength of preference notion. Some of these developments relate to multiattribute utility theory and to the collective choice problem. In subsequent... multiattribute utility theory , utility func- tions have been assessed that indicate a decision maker is risk prone on one attribute and risk averse on...research with tradi- tional developments in utility theory . 3.1 Relative Risk Attitude We will introduce the concept of a relative risk attitude to analyze

  16. Relativity and Quantum Mechanics

    NASA Astrophysics Data System (ADS)

    Brändas, Erkki J.

    2007-12-01

    The old dilemma of quantum mechanics versus the theory of relativity is reconsidered via a first principles relativistically invariant theory. By analytic extension of quantum mechanics into the complex plane one may (i) include dynamical features such as time- and length-scales and (ii) examine the possibility and flexibility of so-called general Jordan block formations. The present viewpoint asks for a new perspective on the age-old problem of quantum mechanics versus the theory of relativity. To bring these ideas together, we will establish the relation with the Klein-Gordon-Dirac relativistic theory and confirm some dynamical features of both the special and the general relativity theory.

  17. Dynamics and relativity.

    NASA Astrophysics Data System (ADS)

    McComb, W. D.

    This book presents an integrated treatment of classical mechanics and special relativity, by treating classical mechanics as Galilean relativity. This gives the reader the freedom to formulate a particular problem in one frame of reference, and to solve it in another where it takes a simpler form. This strategy, which is central to special relativity, is then applied to problems in classical mechanics ranging from rocket ships with variable mass to collisions of particles. This book was written with the aim of providing the best possible balance between text and mathematical derivations. Numerous line drawings, worked examples and exercises are included. A closing chapter gives an elementary account of general relativity.

  18. Optimal Universal Uncertainty Relations

    PubMed Central

    Li, Tao; Xiao, Yunlong; Ma, Teng; Fei, Shao-Ming; Jing, Naihuan; Li-Jost, Xianqing; Wang, Zhi-Xi

    2016-01-01

    We study universal uncertainty relations and present a method called joint probability distribution diagram to improve the majorization bounds constructed independently in [Phys. Rev. Lett. 111, 230401 (2013)] and [J. Phys. A. 46, 272002 (2013)]. The results give rise to state independent uncertainty relations satisfied by any nonnegative Schur-concave functions. On the other hand, a remarkable recent result of entropic uncertainty relation is the direct-sum majorization relation. In this paper, we illustrate our bounds by showing how they provide a complement to that in [Phys. Rev. A. 89, 052115 (2014)]. PMID:27775010

  19. Reciprocal relations in electroacoustics

    SciTech Connect

    Chassagne, C.; Bedeaux, D.

    2014-07-28

    In a colloidal suspension, one can generate sound waves by the application of an alternating electric field (Electrokinetic Sonic Amplitude, i.e., ESA). Another phenomenon is electrophoresis (Electrophoretic Mobility, i.e., EM) where a colloidal particle moves relative to the solvent in an electric field. Vice versa one can generate electric fields or electric currents by sound waves (Colloid Vibration Potential/Current, i.e., CVP/CVI). In 1988 and 1990, O’Brien [J. Fluid Mech. 190, 71–86 (1988) and O’Brien, J. Fluid Mech. 212, 81–93 (1990)] derived a reciprocal relation between the proportionality coefficients of the EM and CVI phenomena. In this paper, we will generalize his proof by constructing the relevant entropy production from which the linear force-flux relations follow. General relations are derived for electrolyte solutions, of which colloidal suspensions are a particular case. The relations between CVI, CVP, EM, and ESA are discussed. O’Brien's reciprocal relation then follows as an Onsager relation. The relation is valid for any applied electric field frequency, particle surface charge and particle concentration (even in the presence of particle-particle interactions) provided the system is isotropic.

  20. The Redshifts in Relativity

    ERIC Educational Resources Information Center

    Singh, Satya Pal; Singh, Apoorva; Hareet, Prabhav

    2011-01-01

    The progress of modern cosmology took off in 1917 when A. Einstein published his paper on general theory of relativity extending his work of special theory of relativity (1905). In 1922 Alexander Friedmann constructed a mathematical model for expanding Universe that had a big bang in remote past. The experimental evidences could come in 1929 by…

  1. Forces in General Relativity

    ERIC Educational Resources Information Center

    Ridgely, Charles T.

    2010-01-01

    Many textbooks dealing with general relativity do not demonstrate the derivation of forces in enough detail. The analyses presented herein demonstrate straightforward methods for computing forces by way of general relativity. Covariant divergence of the stress-energy-momentum tensor is used to derive a general expression of the force experienced…

  2. Teaching Relative Clauses.

    ERIC Educational Resources Information Center

    Nakamori, Takayuki

    2002-01-01

    Discusses the advantages and disadvantages of what has become the standard approach to teaching relative clauses. To overcome the disadvantages, proposes a hierarchical teaching method that begins by introducing noun phrases that contain relative clauses before comparing them with similar structures in the learner's first language. Shows an…

  3. Teaching Mediated Public Relations.

    ERIC Educational Resources Information Center

    Kent, Michael L.

    2001-01-01

    Discusses approaches to teaching a mediated public relations course, emphasizing the World Wide Web. Outlines five course objectives, assignments and activities, evaluation, texts, and lecture topics. Argues that students mastering these course objectives will understand ethical issues relating to media use, using mediated technology in public…

  4. Reasoning About Relations

    ERIC Educational Resources Information Center

    Goodwin, Geoffrey P.; Johnson-Laird, P. N.

    2005-01-01

    Inferences about spatial, temporal, and other relations are ubiquitous. This article presents a novel model-based theory of such reasoning. The theory depends on 5 principles. (a) The structure of mental models is iconic as far as possible. (b) The logical consequences of relations emerge from models constructed from the meanings of the relations…

  5. Elaborating Public Relations Roles.

    ERIC Educational Resources Information Center

    Leichty, Greg; Springston, Jeff

    1996-01-01

    Investigates the structure of public relations roles. Factor analyzes G. Broom and G. Smith's role questionnaire in conjunction with items used in organizational boundary spanning. Extracts eight activity factors. Identifies four primary practitioner roles and one minor role. Refines previous public relations roles concepts. Shows by validation…

  6. Measuring Relational Reasoning

    ERIC Educational Resources Information Center

    Alexander, Patricia A.; Dumas, Denis; Grossnickle, Emily M.; List, Alexandra; Firetto, Carla M.

    2016-01-01

    Relational reasoning is the foundational cognitive ability to discern meaningful patterns within an informational stream, but its reliable and valid measurement remains problematic. In this investigation, the measurement of relational reasoning unfolded in three stages. Stage 1 entailed the establishment of a research-based conceptualization of…

  7. Relational Processing Following Stroke

    ERIC Educational Resources Information Center

    Andrews, Glenda; Halford, Graeme S.; Shum, David; Maujean, Annick; Chappell, Mark; Birney, Damian

    2013-01-01

    The research examined relational processing following stroke. Stroke patients (14 with frontal, 30 with non-frontal lesions) and 41 matched controls completed four relational processing tasks: sentence comprehension, Latin square matrix completion, modified Dimensional Change Card Sorting, and n-back. Each task included items at two or three…

  8. Color Relationalism and Relativism.

    PubMed

    Byrne, Alex; Hilbert, David R

    2017-01-01

    This paper critically examines color relationalism and color relativism, two theories of color that are allegedly supported by variation in normal human color vision. We mostly discuss color relationalism, defended at length in Jonathan Cohen's The Red and the Real, and argue that the theory has insuperable problems.

  9. Public Relations Power.

    ERIC Educational Resources Information Center

    Archetti, Carmen Fernandez

    This practicum report describes an attempt to develop and implement a systematic public relations program for an elementary school center, with the aim of improving public confidence in the school. The author developed a model process for instituting and sustaining a general public relations operation and then field tested the model at South Grade…

  10. Unavailability of wild relatives

    USDA-ARS?s Scientific Manuscript database

    The unavailability of crop wild relatives may come in many forms, including limited possibilities of gene flow with related species due to clonality, differing ploidy levels, or other crossing barriers between species. Alternatively, it may simply mean that we lack information about the wild relativ...

  11. Measuring Relational Reasoning

    ERIC Educational Resources Information Center

    Alexander, Patricia A.; Dumas, Denis; Grossnickle, Emily M.; List, Alexandra; Firetto, Carla M.

    2016-01-01

    Relational reasoning is the foundational cognitive ability to discern meaningful patterns within an informational stream, but its reliable and valid measurement remains problematic. In this investigation, the measurement of relational reasoning unfolded in three stages. Stage 1 entailed the establishment of a research-based conceptualization of…

  12. Forces in General Relativity

    ERIC Educational Resources Information Center

    Ridgely, Charles T.

    2010-01-01

    Many textbooks dealing with general relativity do not demonstrate the derivation of forces in enough detail. The analyses presented herein demonstrate straightforward methods for computing forces by way of general relativity. Covariant divergence of the stress-energy-momentum tensor is used to derive a general expression of the force experienced…

  13. Relativity, Relatedness and Reality.

    ERIC Educational Resources Information Center

    Deloria, Vine, Jr.

    1992-01-01

    Anticipated the modern physics relativity theory, American Indians gained information about the natural world through careful observation based on the principle that all things are related. American Indian students could radically transform scientific knowledge by grounding themselves in traditional knowledge about the world and working this…

  14. Public Relations as Strategy.

    ERIC Educational Resources Information Center

    Shelby, Annette N.

    Public relations as strategic communication is one possible theme for an introductory course in public relations. This perspective focuses attention on messages (their content, timing, media, and so forth) as strategic responses to the audience and the situation. It provides a defensible rationale for including certain relevant topics in the…

  15. Relational Processing Following Stroke

    ERIC Educational Resources Information Center

    Andrews, Glenda; Halford, Graeme S.; Shum, David; Maujean, Annick; Chappell, Mark; Birney, Damian

    2013-01-01

    The research examined relational processing following stroke. Stroke patients (14 with frontal, 30 with non-frontal lesions) and 41 matched controls completed four relational processing tasks: sentence comprehension, Latin square matrix completion, modified Dimensional Change Card Sorting, and n-back. Each task included items at two or three…

  16. Teaching Mediated Public Relations.

    ERIC Educational Resources Information Center

    Kent, Michael L.

    2001-01-01

    Discusses approaches to teaching a mediated public relations course, emphasizing the World Wide Web. Outlines five course objectives, assignments and activities, evaluation, texts, and lecture topics. Argues that students mastering these course objectives will understand ethical issues relating to media use, using mediated technology in public…

  17. Reasoning about relations.

    PubMed

    Goodwin, Geoffrey P; Johnson-Laird, P N

    2005-04-01

    Inferences about spatial, temporal, and other relations are ubiquitous. This article presents a novel model-based theory of such reasoning. The theory depends on 5 principles. (a) The structure of mental models is iconic as far as possible. (b) The logical consequences of relations emerge from models constructed from the meanings of the relations and from knowledge. (c) Individuals tend to construct only a single, typical model. (d) They spontaneously develop their own strategies for relational reasoning. (e) Regardless of strategy, the difficulty of an inference depends on the process of integration of the information from separate premises, the number of entities that have to be integrated to form a model, and the depth of the relation. The article describes computer implementations of the theory and presents experimental results corroborating its main principle.

  18. General relativity and cosmology

    NASA Astrophysics Data System (ADS)

    Bucher, Martin; Ni, Wei-Tou

    2015-10-01

    This year marks the 100th anniversary of Einstein’s 1915 landmark paper “Die Feldgleichungen der Gravitation” in which the field equations of general relativity were correctly formulated for the first time, thus rendering general relativity a complete theory. Over the subsequent hundred years, physicists and astronomers have struggled with uncovering the consequences and applications of these equations. This paper, which was written as an introduction to six chapters dealing with the connection between general relativity and cosmology that will appear in the two-volume book One Hundred Years of General Relativity: From Genesis and Empirical Foundations to Gravitational Waves, Cosmology and Quantum Gravity, endeavors to provide a historical overview of the connection between general relativity and cosmology, two areas whose development has been closely intertwined.

  19. Mutually Exclusive Uncertainty Relations

    PubMed Central

    Xiao, Yunlong; Jing, Naihuan

    2016-01-01

    The uncertainty principle is one of the characteristic properties of quantum theory based on incompatibility. Apart from the incompatible relation of quantum states, mutually exclusiveness is another remarkable phenomenon in the information- theoretic foundation of quantum theory. We investigate the role of mutual exclusive physical states in the recent work of stronger uncertainty relations for all incompatible observables by Mccone and Pati and generalize the weighted uncertainty relation to the product form as well as their multi-observable analogues. The new bounds capture both incompatibility and mutually exclusiveness, and are tighter compared with the existing bounds. PMID:27824161

  20. Related environmental documents

    SciTech Connect

    1995-10-01

    This portion of the Energy Vision 2020 draft report is a listing of related environmental documents used in the drafting of this report. Specifically, the documents are the final environmental impact statements for: (1) Bellefonte Nuclear Plant 1 & 2, (2) Browns Ferry Nuclear Plant 1, 2, & 3, (3) Sequoyah Nuclear Plant 1 & 2, (4) Watts Bar Nuclear Plant 1 & 2, (5) Raccoon Mountain Pumped Storage Facility, (6) Policies relating to rates, (7) Tennessee River and reservoir system operation and planning, (8) Policies related to the use of coal.

  1. Mutually Exclusive Uncertainty Relations.

    PubMed

    Xiao, Yunlong; Jing, Naihuan

    2016-11-08

    The uncertainty principle is one of the characteristic properties of quantum theory based on incompatibility. Apart from the incompatible relation of quantum states, mutually exclusiveness is another remarkable phenomenon in the information- theoretic foundation of quantum theory. We investigate the role of mutual exclusive physical states in the recent work of stronger uncertainty relations for all incompatible observables by Mccone and Pati and generalize the weighted uncertainty relation to the product form as well as their multi-observable analogues. The new bounds capture both incompatibility and mutually exclusiveness, and are tighter compared with the existing bounds.

  2. Mutually Exclusive Uncertainty Relations

    NASA Astrophysics Data System (ADS)

    Xiao, Yunlong; Jing, Naihuan

    2016-11-01

    The uncertainty principle is one of the characteristic properties of quantum theory based on incompatibility. Apart from the incompatible relation of quantum states, mutually exclusiveness is another remarkable phenomenon in the information- theoretic foundation of quantum theory. We investigate the role of mutual exclusive physical states in the recent work of stronger uncertainty relations for all incompatible observables by Mccone and Pati and generalize the weighted uncertainty relation to the product form as well as their multi-observable analogues. The new bounds capture both incompatibility and mutually exclusiveness, and are tighter compared with the existing bounds.

  3. Fluctuation relations for spintronics.

    PubMed

    López, Rosa; Lim, Jong Soo; Sánchez, David

    2012-06-15

    Fluctuation relations are derived in systems where the spin degree of freedom and magnetic interactions play a crucial role. The form of the nonequilibrium fluctuation theorems relies on the assumption of a local balance condition. We demonstrate that in some cases the presence of magnetic interactions violates this condition. Nevertheless, fluctuation relations can be obtained from the microreversibility principle sustained only at equilibrium as a symmetry of the cumulant generating function for spin currents. We illustrate the spintronic fluctuation relations for a quantum dot coupled to partially polarized helical edge states.

  4. Optical clocks and relativity.

    PubMed

    Chou, C W; Hume, D B; Rosenband, T; Wineland, D J

    2010-09-24

    Observers in relative motion or at different gravitational potentials measure disparate clock rates. These predictions of relativity have previously been observed with atomic clocks at high velocities and with large changes in elevation. We observed time dilation from relative speeds of less than 10 meters per second by comparing two optical atomic clocks connected by a 75-meter length of optical fiber. We can now also detect time dilation due to a change in height near Earth's surface of less than 1 meter. This technique may be extended to the field of geodesy, with applications in geophysics and hydrology as well as in space-based tests of fundamental physics.

  5. Optical Clocks and Relativity

    NASA Astrophysics Data System (ADS)

    Chou, C. W.; Hume, D. B.; Rosenband, T.; Wineland, D. J.

    2010-09-01

    Observers in relative motion or at different gravitational potentials measure disparate clock rates. These predictions of relativity have previously been observed with atomic clocks at high velocities and with large changes in elevation. We observed time dilation from relative speeds of less than 10 meters per second by comparing two optical atomic clocks connected by a 75-meter length of optical fiber. We can now also detect time dilation due to a change in height near Earth’s surface of less than 1 meter. This technique may be extended to the field of geodesy, with applications in geophysics and hydrology as well as in space-based tests of fundamental physics.

  6. Library - Book Trade Relations

    ERIC Educational Resources Information Center

    Tuttle, Helen Welch

    1970-01-01

    The trend in relations between the library and the book trade has been in the direction of increased communication and cooperation. Organizational links between librarians, publishers, and booksellers are discussed. (Author/JS)

  7. What Are Related Disorders?

    MedlinePlus

    ... Dietz syndrome, Ehlers-Danlos syndrome, and Familial Thoracic Aortic Aneurysm and Dissection. Disorders related to Marfan syndrome can ... Loeys-Dietz Syndrome Ehlers-Danlos Syndrome Familial Thoracic Aortic Aneurysm and Dissection MASS Phenotype Ectopia Lentis Syndrome Beals ...

  8. Asbestos-related malignancy

    SciTech Connect

    Antmann, K.; Aisner, J.

    1986-01-01

    This book contains 20 chapters. Some of the chapter titles are: The Radiology of Asbestosis and Related Neoplasms; Computed Tomography and Malignant Mesothelioma; Radiation Therapy for Pleural Mesothelioma; and Radiation Therapy of Peritoneal Mesothelioma.

  9. Two Related Parametric Integrals

    ERIC Educational Resources Information Center

    Dana-Picard, T.

    2007-01-01

    Two related sequences of definite integrals are considered. By mixing hand-work, computer algebra system assistance and websurfing, fine connections can be studied between integrals and a couple of interesting sequences of integers. (Contains 4 tables.)

  10. Toward relational empowerment.

    PubMed

    Christens, Brian D

    2012-09-01

    Psychological empowerment has been theorized as a construct with emotional, behavioral and cognitive components. Yet, many studies have stressed that empowerment processes are contingent on interpersonal relationships. Moreover, theory suggests that power is developed and exercised through relationships. This article makes the case that expanding our conceptions of psychological empowerment through the addition of a relational component can enhance our understanding of psychological empowerment and the effectiveness of empowerment-oriented community practice. Previous research on empowerment is reviewed for relational content, and additional insights into the relational context of empowerment processes are marshaled from other concepts in community research including social capital, sense of community, social networks, social support, and citizen participation. A new iteration of the nomological network for psychological empowerment is presented, including the elements of a relational component.

  11. Measurement uncertainty relations

    SciTech Connect

    Busch, Paul; Lahti, Pekka; Werner, Reinhard F.

    2014-04-15

    Measurement uncertainty relations are quantitative bounds on the errors in an approximate joint measurement of two observables. They can be seen as a generalization of the error/disturbance tradeoff first discussed heuristically by Heisenberg. Here we prove such relations for the case of two canonically conjugate observables like position and momentum, and establish a close connection with the more familiar preparation uncertainty relations constraining the sharpness of the distributions of the two observables in the same state. Both sets of relations are generalized to means of order α rather than the usual quadratic means, and we show that the optimal constants are the same for preparation and for measurement uncertainty. The constants are determined numerically and compared with some bounds in the literature. In both cases, the near-saturation of the inequalities entails that the state (resp. observable) is uniformly close to a minimizing one.

  12. General Relativity and Energy

    ERIC Educational Resources Information Center

    Jackson, A. T.

    1973-01-01

    Reviews theoretical and experimental fundamentals of Einstein's theory of general relativity. Indicates that recent development of the theory of the continually expanding universe may lead to revision of the space-time continuum of the finite and unbounded universe. (CC)

  13. Reference Frames and Relativity.

    ERIC Educational Resources Information Center

    Swartz, Clifford

    1989-01-01

    Stresses the importance of a reference frame in mechanics. Shows the Galilean transformation in terms of relativity theory. Discusses accelerated reference frames and noninertial reference frames. Provides examples of reference frames with diagrams. (YP)

  14. Length Paradox in Relativity

    ERIC Educational Resources Information Center

    Martins, Roberto de A.

    1978-01-01

    Describes a thought experiment using a general analysis approach with Lorentz transformations to show that the apparent self-contradictions of special relativity concerning the length-paradox are really non-existant. (GA)

  15. General Relativity and Energy

    ERIC Educational Resources Information Center

    Jackson, A. T.

    1973-01-01

    Reviews theoretical and experimental fundamentals of Einstein's theory of general relativity. Indicates that recent development of the theory of the continually expanding universe may lead to revision of the space-time continuum of the finite and unbounded universe. (CC)

  16. Reference Frames and Relativity.

    ERIC Educational Resources Information Center

    Swartz, Clifford

    1989-01-01

    Stresses the importance of a reference frame in mechanics. Shows the Galilean transformation in terms of relativity theory. Discusses accelerated reference frames and noninertial reference frames. Provides examples of reference frames with diagrams. (YP)

  17. Publicity and public relations

    NASA Technical Reports Server (NTRS)

    Fosha, Charles E.

    1990-01-01

    This paper addresses approaches to using publicity and public relations to meet the goals of the NASA Space Grant College. Methods universities and colleges can use to publicize space activities are presented.

  18. Two Related Parametric Integrals

    ERIC Educational Resources Information Center

    Dana-Picard, T.

    2007-01-01

    Two related sequences of definite integrals are considered. By mixing hand-work, computer algebra system assistance and websurfing, fine connections can be studied between integrals and a couple of interesting sequences of integers. (Contains 4 tables.)

  19. On Allometry Relations

    DTIC Science & Technology

    2012-07-06

    lation density ρ of herbivorous mammals has been determined to be related to their mass M by39 ρ−1 = cM0.75 where the animals freely roam on a “home...range” of given area: Ahr = c ′M1.02. A similar relation exists for carnivores.145 Consequently, as explained by Calder,31 herbivorous mammals above a

  20. Why was Relativity Accepted?

    NASA Astrophysics Data System (ADS)

    Brush, S. G.

    Historians of science have published many studies of the reception of Einstein's special and general theories of relativity. Based on a review of these studies, and my own research on the role of the light-bending prediction in the reception of general relativity, I discuss the role of three kinds of reasons for accepting relativity (1) empirical predictions and explanations; (2) social-psychological factors; and (3) aesthetic-mathematical factors. According to the historical studies, acceptance was a three-stage process. First, a few leading scientists adopted the special theory for aesthetic-mathematical reasons. In the second stage, their enthusiastic advocacy persuaded other scientists to work on the theory and apply it to problems currently of interest in atomic physics. The special theory was accepted by many German physicists by 1910 and had begun to attract some interest in other countries. In the third stage, the confirmation of Einstein's light-bending prediction attracted much public attention and forced all physicists to take the general theory of relativity seriously. In addition to light-bending, the explanation of the advance of Mercury's perihelion was considered strong evidence by theoretical physicists. The American astronomers who conducted successful tests of general relativity became defenders of the theory. There is little evidence that relativity was `socially constructed' but its initial acceptance was facilitated by the prestige and resources of its advocates.

  1. Absolute and relative blindsight.

    PubMed

    Balsdon, Tarryn; Azzopardi, Paul

    2015-03-01

    The concept of relative blindsight, referring to a difference in conscious awareness between conditions otherwise matched for performance, was introduced by Lau and Passingham (2006) as a way of identifying the neural correlates of consciousness (NCC) in fMRI experiments. By analogy, absolute blindsight refers to a difference between performance and awareness regardless of whether it is possible to match performance across conditions. Here, we address the question of whether relative and absolute blindsight in normal observers can be accounted for by response bias. In our replication of Lau and Passingham's experiment, the relative blindsight effect was abolished when performance was assessed by means of a bias-free 2AFC task or when the criterion for awareness was varied. Furthermore, there was no evidence of either relative or absolute blindsight when both performance and awareness were assessed with bias-free measures derived from confidence ratings using signal detection theory. This suggests that both relative and absolute blindsight in normal observers amount to no more than variations in response bias in the assessment of performance and awareness. Consideration of the properties of psychometric functions reveals a number of ways in which relative and absolute blindsight could arise trivially and elucidates a basis for the distinction between Type 1 and Type 2 blindsight.

  2. Frontiers in Numerical Relativity

    NASA Astrophysics Data System (ADS)

    Evans, Charles R.; Finn, Lee S.; Hobill, David W.

    2011-06-01

    Preface; Participants; Introduction; 1. Supercomputing and numerical relativity: a look at the past, present and future David W. Hobill and Larry L. Smarr; 2. Computational relativity in two and three dimensions Stuart L. Shapiro and Saul A. Teukolsky; 3. Slowly moving maximally charged black holes Robert C. Ferrell and Douglas M. Eardley; 4. Kepler's third law in general relativity Steven Detweiler; 5. Black hole spacetimes: testing numerical relativity David H. Bernstein, David W. Hobill and Larry L. Smarr; 6. Three dimensional initial data of numerical relativity Ken-ichi Oohara and Takashi Nakamura; 7. Initial data for collisions of black holes and other gravitational miscellany James W. York, Jr.; 8. Analytic-numerical matching for gravitational waveform extraction Andrew M. Abrahams; 9. Supernovae, gravitational radiation and the quadrupole formula L. S. Finn; 10. Gravitational radiation from perturbations of stellar core collapse models Edward Seidel and Thomas Moore; 11. General relativistic implicit radiation hydrodynamics in polar sliced space-time Paul J. Schinder; 12. General relativistic radiation hydrodynamics in spherically symmetric spacetimes A. Mezzacappa and R. A. Matzner; 13. Constraint preserving transport for magnetohydrodynamics John F. Hawley and Charles R. Evans; 14. Enforcing the momentum constraints during axisymmetric spacelike simulations Charles R. Evans; 15. Experiences with an adaptive mesh refinement algorithm in numerical relativity Matthew W. Choptuik; 16. The multigrid technique Gregory B. Cook; 17. Finite element methods in numerical relativity P. J. Mann; 18. Pseudo-spectral methods applied to gravitational collapse Silvano Bonazzola and Jean-Alain Marck; 19. Methods in 3D numerical relativity Takashi Nakamura and Ken-ichi Oohara; 20. Nonaxisymmetric rotating gravitational collapse and gravitational radiation Richard F. Stark; 21. Nonaxisymmetric neutron star collisions: initial results using smooth particle hydrodynamics

  3. Relationality and social interaction.

    PubMed

    Bottero, Wendy

    2009-06-01

    This paper explores Bourdieu's account of a relational social space, and his relative neglect of social interaction within this framework. Bourdieu includes social capital as one of the key relational elements of his social space, but says much less about it than economic or cultural capital, and levels of social capital are rarely measured in his work. Bourdieu is reluctant to focus on the content of social networks as part of his rejection of substantialist thinking. The neglect of substantive networks creates problems for Bourdieu's framework, because many of Bourdieu's core concepts rest upon assumptions about their interactional properties (in particular, the prevalence of homophilous differential association) which are left unexamined. It is argued here that Bourdieu's neglect of the substance of social networks is related to the criticisms that Bourdieu's framework often encounters, and that this neglect bears re-examination, since it is helpful to think of the ways in which differentiated social networks contribute to the development of habitus, help form fields, and so constitute the intersubjective social relations within which sociality, and practice more generally, occur.

  4. Sports related ocular injuries.

    PubMed

    Mishra, Avinash; Verma, Ashok K

    2012-07-01

    Every year > 600,000 sports and recreation related eye injuries occur, out of which roughly 13,500 of these result in permanent loss of sight. Up to 90% of these sports related eye injuries are preventable by using adequate eye protection equipment. Protective eyewear is made of polycarbonate, a highly impact-resistant plastic which is now easily available as prescription and non-prescription eyewear and all players should be encouraged to use them. The medical officers by educating their patients regarding the risks of eye injuries in various sports and the confirmed benefits of using protective equipment have the potential to prevent injury to over thousands of eyes every year. The medical fraternity can also play a very important role in educating the coaches, parents, and children and thus put an end to unnecessary blindness and vision loss from sports related ocular injuries, therefore ensuring a lifetime of healthy vision.

  5. Sport-related concussion.

    PubMed

    Meehan, William P; Bachur, Richard G

    2009-01-01

    Sport-related concussion is a common injury in children and adolescents. Athletes seldom report concussive symptoms, which makes the diagnosis a challenge. The management of sport-related concussion has changed significantly over the last several years. The previously used grading systems and return-to-play guidelines have been abandoned in favor of more individualized assessment and management. Neuropsychological testing is being used more frequently to assist in management. After recovery, it is recommended that an athlete's return-to-play progress in a gradual, stepwise fashion while being monitored by a health care provider. Proper assessment and management of a sport-related concussion is crucial, because repeat concussions can result in decreased neurocognitive functioning, increased symptomatology, and, at times, catastrophic outcomes.

  6. Binary Love relations

    NASA Astrophysics Data System (ADS)

    Yagi, Kent; Yunes, Nicolás

    2016-07-01

    When in a tight binary, the mutual tidal deformations of neutron stars get imprinted onto observables, encoding information about their internal structure at supranuclear densities and gravity in the extreme-gravity regime. Gravitational wave (GW) observations of their late binary inspiral may serve as a tool to extract the individual tidal deformabilities, but this is made difficult by degeneracies between them in the GW model. We here resolve this problem by discovering approximately equation-of-state (EoS)-insensitive relations between dimensionless combinations of the individual tidal deformabilities. We show that these relations break degeneracies in the GW model, allowing for the accurate extraction of both deformabilities. Such measurements can be used to better differentiate between EoS models, and improve tests of general relativity and cosmology.

  7. Weighted Uncertainty Relations

    PubMed Central

    Xiao, Yunlong; Jing, Naihuan; Li-Jost, Xianqing; Fei, Shao-Ming

    2016-01-01

    Recently, Maccone and Pati have given two stronger uncertainty relations based on the sum of variances and one of them is nontrivial when the quantum state is not an eigenstate of the sum of the observables. We derive a family of weighted uncertainty relations to provide an optimal lower bound for all situations and remove the restriction on the quantum state. Generalization to multi-observable cases is also given and an optimal lower bound for the weighted sum of the variances is obtained in general quantum situation. PMID:26984295

  8. Numerical Relativity and Astrophysics

    NASA Astrophysics Data System (ADS)

    Lehner, Luis; Pretorius, Frans

    2014-08-01

    Throughout the Universe many powerful events are driven by strong gravitational effects that require general relativity to fully describe them. These include compact binary mergers, black hole accretion, and stellar collapse, where velocities can approach the speed of light and extreme gravitational fields (ΦNewt/c2≃1) mediate the interactions. Many of these processes trigger emission across a broad range of the electromagnetic spectrum. Compact binaries further source strong gravitational wave emission that could directly be detected in the near future. This feat will open up a gravitational wave window into our Universe and revolutionize our understanding of it. Describing these phenomena requires general relativity, and—where dynamical effects strongly modify gravitational fields—the full Einstein equations coupled to matter sources. Numerical relativity is a field within general relativity concerned with studying such scenarios that cannot be accurately modeled via perturbative or analytical calculations. In this review, we examine results obtained within this discipline, with a focus on its impact in astrophysics.

  9. Relational Aggression among Students

    ERIC Educational Resources Information Center

    Young, Ellie L.; Nelson, David A.; Hottle, America B.; Warburton, Brittney; Young, Bryan K.

    2011-01-01

    "Relational aggression" refers to harm within relationships caused by covert bullying or manipulative behavior. Examples include isolating a youth from his or her group of friends (social exclusion), threatening to stop talking to a friend (the silent treatment), or spreading gossip and rumors by email. This type of bullying tends to be…

  10. Relational Aggression among Students

    ERIC Educational Resources Information Center

    Young, Ellie L.; Nelson, David A.; Hottle, America B.; Warburton, Brittney; Young, Bryan K.

    2011-01-01

    "Relational aggression" refers to harm within relationships caused by covert bullying or manipulative behavior. Examples include isolating a youth from his or her group of friends (social exclusion), threatening to stop talking to a friend (the silent treatment), or spreading gossip and rumors by email. This type of bullying tends to be…

  11. Relational Responding in Parents

    ERIC Educational Resources Information Center

    Murrell, Amy R.; Wilson, Kelly G.; LaBorde, Cicely T.; Drake, Chad E.; Rogers, Leslie J.

    2008-01-01

    This study investigated the relationship between parenting stress and relational conditioning. Fourteen students who were not mothers, 14 mothers who reported high parenting stress and 14 mothers with low parenting stress completed two matching-to-sample (MTS) computer tasks, each requiring formation of three 3-member classes. The first MTS task…

  12. Seeds of General Relativity.

    ERIC Educational Resources Information Center

    Stauffer, Frederic R.

    1984-01-01

    Proposes novel methods of solving mechanics and dynamics problems by changing frames of reference. Uses these ideas to pursue Einstein's notions of inertial and uniformly rotating reference frames, gravitational and inertial mass, and the gravitational bending of light in relation to the simple original problem. (JM)

  13. Law Related Education Curriculum.

    ERIC Educational Resources Information Center

    Carey, John J.

    Law related education learning modules and lesson plans are presented in this curriculum guide, which is designed to meet three broad goals: (1) to encourage good citizenship and respect for the law by teaching students how to effectively function within the law and to demonstrate and value lawful conduct; (2) to promote a better understanding for…

  14. Prejudice and Race Relations.

    ERIC Educational Resources Information Center

    Mack, Raymond W., Ed.

    Contents of this book comprises: Introduction--A decade of change; (1) Race and its consequences: Beliefs and acts; (2) Race relations in different societies: A comparative perspective; (3) Implementing discrimination: the institutional impact of prejudice; (4) Leaders in change: A set of profiles; and (5) Options facing Americans: Pathos to…

  15. Intergenerational Relations in Polonia.

    ERIC Educational Resources Information Center

    Lopata, Helena Znaniecka

    Conflict and cohesion among different generations of Polish Americans are discussed in this research review. First, demographic figures related to Polish immigration to the U.S. are presented, and the age structure of the present Polish American population is described. It is posited, based on this demographic information, that Polish American…

  16. Dental and related infections.

    PubMed

    Hodgdon, Alan

    2013-05-01

    Emergency physicians should be comfortable treating most dental and related infections. In this article, we outline recommended techniques to perform a dental examination, explore common pathologies, recommend pain and antibiotic management strategies and review common pitfalls. How to avoid overprescribing opioid analgesics is discussed in depth, along with recent studies to support this strategy. Published by Elsevier Inc.

  17. MARC and Relational Databases.

    ERIC Educational Resources Information Center

    Llorens, Jose; Trenor, Asuncion

    1993-01-01

    Discusses the use of MARC format in relational databases and addresses problems of incompatibilities. A solution is presented that is in accordance with Open Systems Interconnection (OSI) standards and is based on experiences at the library of the Universidad Politecnica de Valencia (Spain). (four references) (EA)

  18. Prejudice and Race Relations.

    ERIC Educational Resources Information Center

    Mack, Raymond W., Ed.

    Contents of this book comprises: Introduction--A decade of change; (1) Race and its consequences: Beliefs and acts; (2) Race relations in different societies: A comparative perspective; (3) Implementing discrimination: the institutional impact of prejudice; (4) Leaders in change: A set of profiles; and (5) Options facing Americans: Pathos to…

  19. Race Relations in Britain.

    ERIC Educational Resources Information Center

    British Information Service, New York, NY. Reference Div.

    This pamphlet outlines activities that the British government has undertaken to provide equality of opportunity to ethnic minorities. Background information is provided through an overview of immigration trends which describes racial and regional distributions of minority groups. Legislation concerning race relations and discrimination is…

  20. Relatives' Responsibility; Policy Statement.

    ERIC Educational Resources Information Center

    American Foundation for the Blind, New York, NY.

    Presented by the American Foundation for the Blind (AFB) are background information and a policy statement on responsibility laws pertaining to relatives of applicants for public assistance. The laws are said to date to the Elizabethan Poor Laws, to vary state to state, and to mandate eligibility for public assistance on requirements of residence,…

  1. Heat-Related Illnesses

    DTIC Science & Technology

    1988-04-01

    is a major site of electrolyte resorbtion; heatstroke related to fluid and electrolyte loss from gastroenteritis has been reported. 7 7 Virtually any...restoration of plasma tonicity to normal animals previously chronically hypernatramic. Pediatrica , 43:54- 63, 1969. 65. Holmes, S.W., Horton, E.W.: The

  2. Spirits & Family Relations.

    ERIC Educational Resources Information Center

    O'Brien, Frank Waabu

    This paper offers translations for about 300 names for spirits, relations, and kinships taken from the extinct American Indian languages of southeastern New England, Narragansett and Massachusett. Each section contains tables of three columns. On the left is the term being defined, as defined in the middle column, with useful comments on the right…

  3. Argumentation and Public Relations.

    ERIC Educational Resources Information Center

    Stovall, Richard L.

    Issue management oriented public relations provides an excellent pedagogical device for anyone interested in the application of argumentation. This can be illustrated by a case study in which a commercial metals company was wrongly accused of improperly disposing of toxic waste at a particular site. To counter the bad publicity that followed the…

  4. Sport-Related Concussions

    ERIC Educational Resources Information Center

    Brady, Don; Brady, Flo

    2011-01-01

    Sport-related concussions (SRC) are not limited to specific age ranges, professional athletes, or gender. The primary focus of much of SRC research pertains to the assessment, management, and return to play (RTP) of the concussed athlete. This article highlights some major issues of SRC along with some controversies that presently exist within the…

  5. Lessons in Human Relations.

    ERIC Educational Resources Information Center

    Glenn, Joanne Lozar

    2003-01-01

    Explores the importance of relationship literacy--the ability to create good relationships with others--in the next economy and offers perspectives on how business education instructors can help students develop and improve their human relations skills for business success. (Author/JOW)

  6. Plant Water Relations.

    ERIC Educational Resources Information Center

    Tomley, David

    1982-01-01

    Some simple field investigations on plant water relations are described which demonstrate links between physiological and external environmental factors. In this way, a more complex picture of a plant and how it functions within its habitat and the effects the environment has on it can be built up. (Author/JN)

  7. Sarpagine and related alkaloids

    PubMed Central

    Namjoshi, Ojas A.; Cook, James M.

    2016-01-01

    The sarpagine-related macroline and ajmaline alkaloids share a common biosynthetic origin, and bear important structural similarities, as expected. These indole alkaloids are widely dispersed in 25 plant genera, principally in the Apocynaceae family. Very diverse and interesting biological properties have been reported for this group of natural products. Isolation of new sarpagine-related alkaloids as well as the asymmetric synthesis of these structurally complex molecules are of paramount importance to the synthetic and medicinal chemists. A total of 115 newly isolated sarpagine-related macroline and ajmaline alkaloids, along with their physicochemical properties have been included in this chapter. A general and efficient strategy for the synthesis of these monomeric alkaloids, as well as bisindoles has been presented, which involves application of the asymmetric Pictet–Spengler reaction (>98% ee) as a key step because of the ease of scale up of the tetracyclic template. Also included in this chapter are the syntheses of the sarpagine-related alkaloids, published since the year 2000. PMID:26827883

  8. Sport-Related Concussions

    ERIC Educational Resources Information Center

    Brady, Don; Brady, Flo

    2011-01-01

    Sport-related concussions (SRC) are not limited to specific age ranges, professional athletes, or gender. The primary focus of much of SRC research pertains to the assessment, management, and return to play (RTP) of the concussed athlete. This article highlights some major issues of SRC along with some controversies that presently exist within the…

  9. Related Addictive Disorders.

    ERIC Educational Resources Information Center

    Buck, Tina; Sales, Amos

    This paper provides an overview of addiction related to substance abuse. It provides basic information, prevalence, diagnostic criteria, assessment tools, and treatment issues for eating disorders, compulsive gambling, sex addictions, and work addictions. Eating disorders such as anorexia nervosa and bulimia nervosa, especially affect adolescents.…

  10. [Psychoses and relational games].

    PubMed

    Busso, P; Stradoni, P

    1991-01-01

    This paper examines psychosis as a manifestation of the internal logic of a relation system. Our interest thus shifts from the singular individual to what may be considered his significant system--the family. The paper shows how the systemic view of this specific clinical syndrome has developed since the initial researches.

  11. READINGS IN INTERGROUP RELATIONS.

    ERIC Educational Resources Information Center

    STOREN, HELEN F.

    NOTING THAT THE FIELD OF HUMAN RELATIONS HAS RECEIVED MORE ATTENTION IN THE LAST GENERATION THAN EVER BEFORE, THE NATIONAL CONFERENCE OF CHRISTIANS AND JEWS HAS REVISED ITS 1956 EDITION OF SELECTED READING LITERATURE. READINGS ARE DIVIDED INTO SEVEN CATEGORIES--PREJUDICE - CAUSES, PREVENTION AND CURE, RELIGION - UNDERSTANDING RELIGIOUS GROUPS,…

  12. Relativity on a Spreadsheet.

    ERIC Educational Resources Information Center

    Carson, S. R.

    1998-01-01

    Presents a method for using spreadsheets to model special relativistic phenomena based on the connection between electric and magnetic fields in special relativity. Uses the time dilation equation to carry out transformations between reference frames that show the connection between the fields quantitatively. (DDR)

  13. College-Community Relations.

    ERIC Educational Resources Information Center

    Herrscher, Barton R.; Hatfield, Thomas M.

    1969-01-01

    Several aspects of college-community relations were discussed in this review. In the avocational realm, as well as the vocational, the 2-year college can serve the special needs and interests of the community. Short courses, lecture series, concerts, leisure activities and services, and community use of campus facilities help the community college…

  14. Group Counseling: Health Related.

    ERIC Educational Resources Information Center

    McFadden, Johnnie

    1979-01-01

    Diabetes and sickle cell anemia (SCA) are two health-related characteristics that distinguish young people from their peers. This article outlines the problems of children with diabetes and SCA and presents the goals and format for group counseling of these populations and their parents. (Author/BEF)

  15. Peer relations in childhood.

    PubMed

    Hay, Dale F; Payne, Alexandra; Chadwick, Andrea

    2004-01-01

    We present a developmental model that describes normal peer relations and highlights processes that underlie the emergence of problems with peers in childhood. We propose that children's relationships with peers begin in the first years of life, with stable individual differences and preferences for particular peers emerging by three years of age. Social skills that facilitate peer relationships consolidate in the preschool years, during which time peer groups become structured with respect to friendship groups, gender, and dominance relations; some children begin to be rejected by their peers. In later childhood some children develop entrenched problems with peer relationships, in terms of loneliness, bullying and victimisation. Underlying cognitive and emotional processes that facilitate successful peer relationships at all ages are identified, and the extent to which peer relations play a causal role in the genesis of disorder is evaluated. A review of the evidence suggests that, rather than a simple pathway from problematic peer relations to disorder, there is a reciprocal relationship between children's problems with peers and their psychological problems from infancy to adolescence.

  16. Aspects of cosmological relativity.

    NASA Astrophysics Data System (ADS)

    Carmeli, M.

    1999-07-01

    The author reviews cosmological relativity, a new special theory of relativity that was recently developed for cosmology, and discusses in detail some of its aspects. He recalls that in this theory it is assumed that gravitation is negligible. Under this assumption, the receding velocities of galaxies and the distances between them in the Hubble expansion are united into a four-dimensional pseudo-Euclidean manifold, similarly to space and time in ordinary special relativity. The Hubble law is assumed and is written in an invariant way that enables one to derive a four-dimensional transformation which is similar to the Lorentz transformation. The parameter in the new transformation is the ratio between the cosmic time to the Hubble time. Accordingly, the new transformation relates physical quantities at different cosmic times in the limit of weak or negligible gravitation. The transformation is then applied to the problem of the expansion of the universe at the very early stage when gravity was negligible and thus the transformation is applicable. New applications of the theory are presented. The author shows that there is no need to assume the existence of galaxy dark matter; the Tully-Fisher law is derived from the theory. A completely new picture of the expanding universe is thus obtained and compared to the FRW one.

  17. Plant Water Relations.

    ERIC Educational Resources Information Center

    Tomley, David

    1982-01-01

    Some simple field investigations on plant water relations are described which demonstrate links between physiological and external environmental factors. In this way, a more complex picture of a plant and how it functions within its habitat and the effects the environment has on it can be built up. (Author/JN)

  18. International Relations Program, 1991.

    ERIC Educational Resources Information Center

    Doyle, Robert P.

    This brochure describes the following 1991 international relations programs of the American Library Association (ALA): (1) the Books for Romania Program, which resulted in donations of books, journals, microfilm products, and microfilm readers valued at approximately $5 million to Rumanian libraries; (2) the Colloquium on Library Science, a…

  19. [Metformin- related lactic acidosis].

    PubMed

    Manes, Massimo; Pellu, Valentina; Caputo, Donatella; Molino, Andrea; Paternoster, Giuseppe; Gabrielli, Danila; Nebiolo, Pier Eugenio

    2014-01-01

    Lactic acidosis metformin-related is a potentially fatal complication. Reviews show a stable prevalence of this phenomenon, but nephrological experience is required since it is frequently involved in therapeutic management. Here we report the cases of two old patients with severe lactic acidosis and acute renal failure treated with hemodiafiltration.

  20. Linguistic Relativity Revisited.

    ERIC Educational Resources Information Center

    Awa, Njoku E.; Crowder, L. Van, Jr.

    This paper reviews the theory of linguistic relativity, tracing the historical roots, as well as contemporary formulations of the notion that languages shape thought and percetpion in different ways. Implications are then considered for intercultural communication and communication research. A bibliography is appended. (AA)

  1. Press Relations: Carter's Example.

    ERIC Educational Resources Information Center

    Kindsvatter, Peter S.

    Although different philosophies may motivate presidential-press relations, causing frequent friction or adversity, there is nevertheless a strong degree of cooperation and collaboration between the press and a president of the United States. This interdependence has been particularly evident in recent administrations, and it progresses…

  2. Relationality and Mathematical Knowing

    ERIC Educational Resources Information Center

    Maheux, Jean-Francois; Roth, Wolff-Michael

    2011-01-01

    Current conceptualizations of knowing and learning tend to separate the knower from others, the world they know, and themselves. In this article, we offer "relationality" as an alternative to such conceptualizations of mathematical knowing. We begin with the perspective of Maturana and Varela to articulate some of its problems and our alternative.…

  3. Modalities, Relations, and Learning

    NASA Astrophysics Data System (ADS)

    Müller, Martin Eric

    While the popularity of statistical, probabilistic and exhaustive machine learning techniques still increases, relational and logic approaches are still a niche market in research. While the former approaches focus on predictive accuracy, the latter ones prove to be indispensable in knowledge discovery.

  4. The geometry of relativity

    NASA Astrophysics Data System (ADS)

    Dray, Tevian

    2017-09-01

    Geometric treatments of both special and general relativity are outlined, suitable for students in the sciences who are seeing these topics for the first time. Both the advantages and disadvantages of such an approach, and its relationship to more traditional approaches, are then discussed.

  5. Lessons in Human Relations.

    ERIC Educational Resources Information Center

    Glenn, Joanne Lozar

    2003-01-01

    Explores the importance of relationship literacy--the ability to create good relationships with others--in the next economy and offers perspectives on how business education instructors can help students develop and improve their human relations skills for business success. (Author/JOW)

  6. Sports-related concussions.

    PubMed

    Conder, Robert L; Conder, Alanna A

    2015-04-01

    Concussions are an inherent part of collision sports such as football and soccer. As a subset of traumatic brain injury, concussions are neurometabolic events that cause transient neurologic dysfunction. Following a concussion, some athletes require longer neurologic recovery than others. Education and intervention aimed at prevention and management can minimize the long-term sequelae of sports-related concussions.

  7. Nuclear energy related research

    NASA Astrophysics Data System (ADS)

    Rintamaa, R.

    1992-05-01

    The annual Research Program Plan describes publicly funded nuclear energy related research to be carried out mainly at the Technical Research Center of Finland (VTT) in 1992. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Center for Radiation and Nuclear Safety (STUK), and VTT itself. Other research institutes, utilities, and industry also contribute to many projects.

  8. Group Counseling: Health Related.

    ERIC Educational Resources Information Center

    McFadden, Johnnie

    1979-01-01

    Diabetes and sickle cell anemia (SCA) are two health-related characteristics that distinguish young people from their peers. This article outlines the problems of children with diabetes and SCA and presents the goals and format for group counseling of these populations and their parents. (Author/BEF)

  9. Peer Relations in Childhood

    ERIC Educational Resources Information Center

    Hay, Dale F.; Payne, Alexandra; Chadwick, Andrea

    2004-01-01

    We present a developmental model that describes normal peer relations and highlights processes that underlie the emergence of problems with peers in childhood. We propose that children's relationships with peers begin in the first years of life, with stable individual differences and preferences for particular peers emerging by three years of age.…

  10. Weather-Related Mortality

    PubMed Central

    Anderson, Brooke G.; Bell, Michelle L.

    2012-01-01

    Background Many studies have linked weather to mortality; however, role of such critical factors as regional variation, susceptible populations, and acclimatization remain unresolved. Methods We applied time-series models to 107 US communities allowing a nonlinear relationship between temperature and mortality by using a 14-year dataset. Second-stage analysis was used to relate cold, heat, and heat wave effect estimates to community-specific variables. We considered exposure timeframe, susceptibility, age, cause of death, and confounding from pollutants. Heat waves were modeled with varying intensity and duration. Results Heat-related mortality was most associated with a shorter lag (average of same day and previous day), with an overall increase of 3.0% (95% posterior interval: 2.4%–3.6%) in mortality risk comparing the 99th and 90th percentile temperatures for the community. Cold-related mortality was most associated with a longer lag (average of current day up to 25 days previous), with a 4.2% (3.2%–5.3%) increase in risk comparing the first and 10th percentile temperatures for the community. Mortality risk increased with the intensity or duration of heat waves. Spatial heterogeneity in effects indicates that weather–mortality relationships from 1 community may not be applicable in another. Larger spatial heterogeneity for absolute temperature estimates (comparing risk at specific temperatures) than for relative temperature estimates (comparing risk at community-specific temperature percentiles) provides evidence for acclimatization. We identified susceptibility based on age, socioeconomic conditions, urbanicity, and central air conditioning. Conclusions Acclimatization, individual susceptibility, and community characteristics all affect heat-related effects on mortality. PMID:19194300

  11. [Spanish flu related data].

    PubMed

    Shimao, Tadao

    2009-10-01

    Swine flu epidemic is a current topic, and data relating to Spanish flu pandemic from 1918 to 1920 were presented for your information. Monthly trend of number of deaths due to influenza, acute bronchitis, pneumonia and bronchopneumonia together with PTB, other TB and TB of all forms from 1917 to 1920 was presented in Table 1 and Fig. 1. Flu epidemics in early 1917 and from winter 1917 to spring 1818 were so-called common seasonal flu epidemic, however, new pandemic started from October 1918, and the number of deaths due to flu increased 14 times compared with previous month in October, 19 times in November, and the pandemic reached the summit, and started to decrease from December, however, marked decline was seen only after April 1919. The number of deaths due to flu started to increase again from November 1919, and reached its summit again in January 1920, and the pandemic ended in July. The age- and sex-specific mortality rate due to influenza in 1918 was shown in Fig. 2. The rate was high among infants, 20s and 30s and elderly, and by sex, the rate of female was higher below 35 and lower above 35. The number of deaths due to acute bronchitis and pneumonia and bronchopneumonia fluctuated in parallel with that of influenza, and deaths due to these conditions were very difficult to differentiate, and the impact of flu could better be evaluated by summing up all these three conditions, the sum of deaths due to three conditions was expressed as influenza related death. The proportion of deaths due to three conditions by age group was shown in Fig. 3. The proportion of acute bronchitis was high in infants and elderly, and in the other age groups, influenza occupied around 30% and pneumonia and bronchopneumonia around 70% of influenza related death. Total number of deaths due to influenza related diseases from 1918 to 1920 was 816,884, and the annual rate was 489.4 per 100,000. Annual age- and sex-specific mortality rate due to influenza related diseases was shown in

  12. Numerical relativity beyond astrophysics.

    PubMed

    Garfinkle, David

    2017-01-01

    Though the main applications of computer simulations in relativity are to astrophysical systems such as black holes and neutron stars, nonetheless there are important applications of numerical methods to the investigation of general relativity as a fundamental theory of the nature of space and time. This paper gives an overview of some of these applications. In particular we cover (i) investigations of the properties of spacetime singularities such as those that occur in the interior of black holes and in big bang cosmology. (ii) investigations of critical behavior at the threshold of black hole formation in gravitational collapse. (iii) investigations inspired by string theory, in particular analogs of black holes in more than 4 spacetime dimensions and gravitational collapse in spacetimes with a negative cosmological constant.

  13. Numerical relativity beyond astrophysics

    NASA Astrophysics Data System (ADS)

    Garfinkle, David

    2017-01-01

    Though the main applications of computer simulations in relativity are to astrophysical systems such as black holes and neutron stars, nonetheless there are important applications of numerical methods to the investigation of general relativity as a fundamental theory of the nature of space and time. This paper gives an overview of some of these applications. In particular we cover (i) investigations of the properties of spacetime singularities such as those that occur in the interior of black holes and in big bang cosmology. (ii) investigations of critical behavior at the threshold of black hole formation in gravitational collapse. (iii) investigations inspired by string theory, in particular analogs of black holes in more than 4 spacetime dimensions and gravitational collapse in spacetimes with a negative cosmological constant.

  14. Generalized uncertainty relations

    NASA Astrophysics Data System (ADS)

    Herdegen, Andrzej; Ziobro, Piotr

    2017-04-01

    The standard uncertainty relations (UR) in quantum mechanics are typically used for unbounded operators (like the canonical pair). This implies the need for the control of the domain problems. On the other hand, the use of (possibly bounded) functions of basic observables usually leads to more complex and less readily interpretable relations. In addition, UR may turn trivial for certain states if the commutator of observables is not proportional to a positive operator. In this letter we consider a generalization of standard UR resulting from the use of two, instead of one, vector states. The possibility to link these states to each other in various ways adds additional flexibility to UR, which may compensate some of the above-mentioned drawbacks. We discuss applications of the general scheme, leading not only to technical improvements, but also to interesting new insight.

  15. Relational marital paradigm.

    PubMed

    Gostecnik, Christian; Repic, Tanja

    2009-01-01

    The relational marital paradigm presumes that those partners who trigger the strongest impulses of attraction and passionate feelings of love in each other are those who are most likely to marry. However, with time these feelings also awaken memories of the most horrible conflicts and nightmares experienced in the family of origin. The subconscious intention is that the primary drama will, this time, be resolved with more positive outcomes. Relational marital therapy, therefore, sets a new milestone in understanding. It is a different approach to therapeutic practice that is based on the therapeutic relationship/alliance, which addresses and resolves the deepest psychobiological states and affects and brings new potential for better quality of relationships.

  16. Quantum relative Lorenz curves

    NASA Astrophysics Data System (ADS)

    Buscemi, Francesco; Gour, Gilad

    2017-01-01

    The theory of majorization and its variants, including thermomajorization, have been found to play a central role in the formulation of many physical resource theories, ranging from entanglement theory to quantum thermodynamics. Here we formulate the framework of quantum relative Lorenz curves, and show how it is able to unify majorization, thermomajorization, and their noncommutative analogs. In doing so, we define the family of Hilbert α divergences and show how it relates with other divergences used in quantum information theory. We then apply these tools to the problem of deciding the existence of a suitable transformation from an initial pair of quantum states to a final one, focusing in particular on applications to the resource theory of athermality, a precursor of quantum thermodynamics.

  17. Very special relativity.

    PubMed

    Cohen, Andrew G; Glashow, Sheldon L

    2006-07-14

    By very special relativity (VSR) we mean descriptions of nature whose space-time symmetries are certain proper subgroups of the Poincaré group. These subgroups contain space-time translations together with at least a two-parameter subgroup of the Lorentz group isomorphic to that generated by K(x) + J(y) and K(y)- J(x). We find that VSR implies special relativity (SR) in the context of local quantum field theory or of conservation. Absent both of these added hypotheses, VSR provides a simulacrum of SR for which most of the consequences of Lorentz invariance remain wholly or essentially intact, and for which many sensitive searches for departures from Lorentz invariance must fail. Several feasible experiments are discussed for which Lorentz-violating effects in VSR may be detectable.

  18. Very Special Relativity

    NASA Astrophysics Data System (ADS)

    Cohen, Andrew G.; Glashow, Sheldon L.

    2006-07-01

    By very special relativity (VSR) we mean descriptions of nature whose space-time symmetries are certain proper subgroups of the Poincaré group. These subgroups contain space-time translations together with at least a two-parameter subgroup of the Lorentz group isomorphic to that generated by Kx+Jy and Ky-Jx. We find that VSR implies special relativity (SR) in the context of local quantum field theory or of CP conservation. Absent both of these added hypotheses, VSR provides a simulacrum of SR for which most of the consequences of Lorentz invariance remain wholly or essentially intact, and for which many sensitive searches for departures from Lorentz invariance must fail. Several feasible experiments are discussed for which Lorentz-violating effects in VSR may be detectable.

  19. Asbestos-related disease.

    PubMed

    Jamrozik, E; de Klerk, N; Musk, A W

    2011-05-01

    Inhalation of airborne asbestos fibres causes several diseases. These include asbestosis, lung cancer, malignant mesothelioma as well as pleural effusion, discrete (plaques) or diffuse benign pleural fibrosis and rolled atelectasis. The lag time between exposure and the development of disease may be many decades, thus the health risks of asbestos continue to be relevant despite bans on the use of asbestos and improvements in safety regulations for those who are still exposed. Asbestos was mined and used extensively in Australia for over 100 years and Australia is now experiencing part of a worldwide epidemic of asbestos-related disease. This review provides insight into the history and epidemiology of asbestos-related disease in Australia and discusses relevant clinical aspects in their diagnosis and management. The past and current medico-legal aspects of asbestos as well as currently evolving areas of research and future projections are summarized.

  20. Tests of General Relativity

    SciTech Connect

    Kramer, Michael

    2011-09-22

    The last years have seen continuing activities in the exploration of our understanding of gravity, motivated by results from precision cosmology and new precision astrophysical experiments. At the centre of attention lies the question as to whether general relativity is the correct theory of gravity. In answering this question, we work not only towards correctly interpreting the phenomenon of 'dark energy' but also towards the goal of achieving a quantum theory of gravity. In these efforts, the observations of pulsars, especially those in binary systems, play an important role. Pulsars do not only provide the only evidence for the existence of gravitational waves so far, but they also provide precision tests of general relativity and alternative theories of gravity. This talk summarizes the current state-of-art in these experiments and looks into the future.

  1. Relative microvascular pressure sensing

    NASA Astrophysics Data System (ADS)

    Choi, Min; Zemp, Roger

    2016-03-01

    Microcirculation may be characterized by the vascular pressure as it is influenced by pressure-driven perfusion. Crosssections of blood vessels can be visualized by photoacoustic imaging and compressing on vessels causes deformation. The photoacoustic signals of blood, when compressed to the point of vessel collapse, may or may not vanish depending on the buckling process it undergoes. We form relative pressure images of microvessels by tracking vessel collapse as a function of externally applied pressure using photoacoustic imaging.

  2. The Human Relations School.

    ERIC Educational Resources Information Center

    Fox, Robert S.; Lippitt, Ronald

    As an expansion of ED 026 320, the model for a Human Relations School sketched in this document is an attempt to answer these questions: What would it be like if a school were to see itself as a laboratory for living and learning in which the test that is known about human interaction were utilized? How would it be organized? What would be its…

  3. Asteroseismic stellar activity relations

    NASA Astrophysics Data System (ADS)

    Bonanno, A.; Corsaro, E.; Karoff, C.

    2014-11-01

    Context. In asteroseismology an important diagnostic of the evolutionary status of a star is the small frequency separation which is sensitive to the gradient of the mean molecular weight in the stellar interior. It is thus interesting to discuss the classical age-activity relations in terms of this quantity. Moreover, as the photospheric magnetic field tends to suppress the amplitudes of acoustic oscillations, it is important to quantify the importance of this effect by considering various activity indicators. Aims: We propose a new class of age-activity relations that connects the Mt. Wilson S index and the average scatter in the light curve with the small frequency separation and the amplitude of the p-mode oscillations. Methods: We used a Bayesian inference to compute the posterior probability of various empirical laws for a sample of 19 solar-like active stars observed by the Kepler telescope. Results: We demonstrate the presence of a clear correlation between the Mt. Wilson S index and the relative age of the stars as indicated by the small frequency separation, as well as an anti-correlation between the S index and the oscillation amplitudes. We argue that the average activity level of the stars shows a stronger correlation with the small frequency separation than with the absolute age that is often considered in the literature. Conclusions: The phenomenological laws discovered in this paper have the potential to become new important diagnostics to link stellar evolution theory with the dynamics of global magnetic fields. In particular we argue that the relation between the Mt. Wilson S index and the oscillation amplitudes is in good agreement with the findings of direct numerical simulations of magneto-convection.

  4. [Desmin-related cardiomyopathy].

    PubMed

    Rybakova, M G; Kuznetsova, I A; Gudkova, A Ia; Kostareva, A A; Semernin, E N

    2011-01-01

    The observation of 26 years old patient with desminopathy declared itself by hypertrophied cardiomyopathy with its transformation into restrictive phenotype is presented. The features of pathologic course at the patient were a dominance and diversity of cardiac manifestations. Endomyocardiac biopsy allowed suspecting the desminopathy confirmed by genetic analysis. Morphological features of desmin-related cardiomyopathy were irregular desmin conglomerates mainly located under sarcolemma and an indirect histological signs of idiopathic cardiomyopathy as well nuclear polymorphism, perinuclear "nimbus", chaotic located myofibrils.

  5. Matter in general relativity

    NASA Technical Reports Server (NTRS)

    Ray, J. R.

    1982-01-01

    Two theories of matter in general relativity, the fluid theory and the kinetic theory, were studied. Results include: (1) a discussion of various methods of completing the fluid equations; (2) a method of constructing charged general relativistic solutions in kinetic theory; and (3) a proof and discussion of the incompatibility of perfect fluid solutions in anisotropic cosmologies. Interpretations of NASA gravitational experiments using the above mentioned results were started. Two papers were prepared for publications based on this work.

  6. Matter in general relativity

    NASA Technical Reports Server (NTRS)

    Ray, J. R.

    1982-01-01

    Two theories of matter in general relativity, the fluid theory and the kinetic theory, were studied. Results include: (1) a discussion of various methods of completing the fluid equations; (2) a method of constructing charged general relativistic solutions in kinetic theory; and (3) a proof and discussion of the incompatibility of perfect fluid solutions in anisotropic cosmologies. Interpretations of NASA gravitational experiments using the above mentioned results were started. Two papers were prepared for publications based on this work.

  7. Gyroscope relativity experiment

    NASA Technical Reports Server (NTRS)

    Decher, R.

    1971-01-01

    A gyroscope test of general relativity theory is proposed. The basic ideas and hardware concepts conceived by the investigators to implement the experiment are discussed. The goal is to measure the extremely small relativistic precession of gyroscopes in an earth-orbiting satellite. The experiment hardware (cryogenic gyroscopes, a telescope and superconducting circuits) is enclosed in a liquid helium dewar. The experiment will operate in orbit for about one year.

  8. Cultural relativity and poverty.

    PubMed

    Martin, M E; Henry, M

    1989-03-01

    The nurse who practices from a perspective of cultural relativity attempts to understand client behaviors within the context of the clients' culture. Viewing customs (behaviors) as a reflection of client beliefs and values can enhance the nurse's effectiveness with clients in poverty. This paper presents a case study in which a culturally relativistic perspective was used to assess and intervene with a family living in poverty.

  9. Living related liver transplantation.

    PubMed

    Makuuchi, M; Kawarazaki, H; Iwanaka, T; Kamada, N; Takayama, T; Kumon, M

    1992-01-01

    Liver transplantation from a brain death donor has not yet been accepted in Japan. The only alternative method at present is transplantation from a living donor. After the first successful living related liver transplantation was performed by Strong in Brisbane, Australia, Japanese hepatic and transplant surgeons also began to perform such operations. As of February 1991, 16 living related liver transplantations had already been performed in Japan, mainly for children with biliary atresia. Five of these patients subsequently died, however, our patient has survived more than 1 year, and she is presently leading a normal school life. The most important issue regarding living related liver transplantation is to ensure the donor's safety. For this purpose, we conducted a preoperative banking of the donor's own blood and plasma. In addition, a selective vascular occlusion was carried out to reduce blood loss during the resection of the liver. Intraoperative color Doppler ultrasonography was introduced for evaluating the circulation of the graft. By using this modality, the following three points were able to be accurately estimated in order to obtain optimal graft perfusion: 1) The most suitable position for the graft to be fixed to the abdominal wall, 2) whether or not the abdominal wall could be closed and 3) the indication for a ligation of the collateral veins to form a porto-systemic shunt. Thanks to these procedures, living related liver transplantations have now become an acceptable transplant method, however, a transplantation from a cadaver that is brain dead but still has a beating heart is still absolutely necessary for adult recipients. Therefore, in the future, both methods should be performed.

  10. Relative Entropy Credibility Theory

    NASA Astrophysics Data System (ADS)

    Fernández-Durán, Juan José; Gregorio-Domínguez, María Mercedes

    2004-11-01

    Consider a portfolio of personal motor insurance policies in which, for each policyholder in the portfolio, we want to assign a credibility factor at the end of each policy period that reflects the claim experience of the policyholder compared with the claim experience of the entire portfolio. In this paper we present the calculation of credibility factors based on the concept of relative entropy between the claim size distribution of the entire portfolio and the claim size distribution of the policyholder.

  11. Industrial labor relations manual

    NASA Technical Reports Server (NTRS)

    1992-01-01

    The NASA Industrial Labor Relations Manual provides internal guidelines and procedures to assist NASA Field Installations in dealing with contractor labor management disputes, Service Contract Act variance hearings, and to provide access of Labor Union Representatives to NASA for the purpose of maintaining schedules and goals in connection with vital NASA programs. This manual will be revised by page changes as revisions become necessary. Initial distribution of this manual has been made to NASA Headquarters and Field Installations.

  12. Relativity, Dimensionality, and Existence

    NASA Astrophysics Data System (ADS)

    Petkov, Vesselin

    A 100 years have passed since the advent of special relativity and 2008 will mark another important to all relativists anniversary - 100 years since Minkowski gave his talk "Space and Time" on September 21, 1908 in which he proposed the unifi- cation of space and time into an inseparable entity - space-time. Although special relativity has been an enormously successful physical theory no progress has been made in clarifying the question of existence of the objects represented by two of its basic concepts - space-time and world lines (or worldtubes in the case of extended bodies). The major reason for this failure appears to be the physicists' tradition to call such questions of existence philosophical. This tradition, however, is not quite consistent. In Newtonian mechanics physicists believe that they describe real objects whenever they talk about particles - one of the basic concepts of Newtonian physics. The situation is the same in quantum physics - no one questions the existence of electrons, protons, etc. Then why should the question of existence of worldtubes (representing particles in relativity) be regarded as a philosophical question?

  13. Principle of relative locality

    SciTech Connect

    Amelino-Camelia, Giovanni; Freidel, Laurent; Smolin, Lee; Kowalski-Glikman, Jerzy

    2011-10-15

    We propose a deepening of the relativity principle according to which the invariant arena for nonquantum physics is a phase space rather than spacetime. Descriptions of particles propagating and interacting in spacetimes are constructed by observers, but different observers, separated from each other by translations, construct different spacetime projections from the invariant phase space. Nonetheless, all observers agree that interactions are local in the spacetime coordinates constructed by observers local to them. This framework, in which absolute locality is replaced by relative locality, results from deforming energy-momentum space, just as the passage from absolute to relative simultaneity results from deforming the linear addition of velocities. Different aspects of energy-momentum space geometry, such as its curvature, torsion and nonmetricity, are reflected in different kinds of deformations of the energy-momentum conservation laws. These are in principle all measurable by appropriate experiments. We also discuss a natural set of physical hypotheses which singles out the cases of energy-momentum space with a metric compatible connection and constant curvature.

  14. Beyond Einstein's General Relativity

    NASA Astrophysics Data System (ADS)

    Lobo, Francisco S. N.

    2015-04-01

    Modern astrophysical and cosmological models are plagued with two severe theoretical difficulties, namely, the dark energy and the dark matter problems. Relative to the former, high-precision observational data have confirmed with startling evidence that the Universe is undergoing a phase of accelerated expansion. This phase, one of the most important and challenging current problems in cosmology, represents a new imbalance in the governing gravitational equations. Several candidates, responsible for this expansion, have been proposed in the literature, in particular, dark energy models and modified gravity, amongst others. Outstanding questions are related to the nature of this so-called “dark energy” that is driving the acceleration of the universe, and whether it is due to the vacuum energy or a dynamical field. On the other hand, the late-time cosmic acceleration may be due to modifications of General Relativity, which introduce new degrees of freedom to the gravitational sector itself. We analyze some of the modified theories of gravity that address these intriguing and exciting problems facing modern physics, and explore the foundations of gravitation theory, essential for the construction of modified theories of gravity.

  15. General Relativity and Gravitation

    NASA Astrophysics Data System (ADS)

    Ashtekar, Abhay; Berger, Beverly; Isenberg, James; MacCallum, Malcolm

    2015-07-01

    Part I. Einstein's Triumph: 1. 100 years of general relativity George F. R. Ellis; 2. Was Einstein right? Clifford M. Will; 3. Cosmology David Wands, Misao Sasaki, Eiichiro Komatsu, Roy Maartens and Malcolm A. H. MacCallum; 4. Relativistic astrophysics Peter Schneider, Ramesh Narayan, Jeffrey E. McClintock, Peter Mészáros and Martin J. Rees; Part II. New Window on the Universe: 5. Receiving gravitational waves Beverly K. Berger, Karsten Danzmann, Gabriela Gonzalez, Andrea Lommen, Guido Mueller, Albrecht Rüdiger and William Joseph Weber; 6. Sources of gravitational waves. Theory and observations Alessandra Buonanno and B. S. Sathyaprakash; Part III. Gravity is Geometry, After All: 7. Probing strong field gravity through numerical simulations Frans Pretorius, Matthew W. Choptuik and Luis Lehner; 8. The initial value problem of general relativity and its implications Gregory J. Galloway, Pengzi Miao and Richard Schoen; 9. Global behavior of solutions to Einstein's equations Stefanos Aretakis, James Isenberg, Vincent Moncrief and Igor Rodnianski; Part IV. Beyond Einstein: 10. Quantum fields in curved space-times Stefan Hollands and Robert M. Wald; 11. From general relativity to quantum gravity Abhay Ashtekar, Martin Reuter and Carlo Rovelli; 12. Quantum gravity via unification Henriette Elvang and Gary T. Horowitz.

  16. Statin-related myotoxicity.

    PubMed

    Fernandes, Vera; Santos, Maria Joana; Pérez, Antonio

    2016-05-01

    Statin therapy has a very important role in decreasing cardiovascular risk, and treatment non-compliance may therefore be a concern in high cardiovascular risk patients. Myotoxicity is a frequent side effect of statin therapy and one of the main causes of statin discontinuation, which limits effective treatment of patients at risk of or with cardiovascular disease. Because of the high proportion of patients on statin treatment and the frequency of statin-related myotoxicity, this is a subject of concern in clinical practice. However, statin-related myotoxicity is probably underestimated because there is not a gold standard definition, and its diagnosis is challenging. Moreover, information about pathophysiology and optimal therapeutic options is scarce. Therefore, this paper reviews the knowledge about the definition, pathophysiology and predisposing conditions, diagnosis and management of statin-related myotoxicity, and provides a practical scheme for its management in clinical practice. Copyright © 2016 SEEN. Published by Elsevier España, S.L.U. All rights reserved.

  17. Relative permeability through fractures

    SciTech Connect

    Diomampo, Gracel, P.

    2001-08-01

    The mechanism of two-phase flow through fractures is of importance in understanding many geologic processes. Currently, two-phase flow through fractures is still poorly understood. In this study, nitrogen-water experiments were done on both smooth and rough parallel plates to determine the governing flow mechanism for fractures and the appropriate methodology for data analysis. The experiments were done using a glass plate to allow visualization of flow. Digital video recording allowed instantaneous measurement of pressure, flow rate and saturation. Saturation was computed using image analysis techniques. The experiments showed that gas and liquid phases flow through fractures in nonuniform separate channels. The localized channels change with time as each phase path undergoes continues breaking and reforming due to invasion of the other phase. The stability of the phase paths is dependent on liquid and gas flow rate ratio. This mechanism holds true for over a range of saturation for both smooth and rough fractures. In imbibition for rough-walled fractures, another mechanism similar to wave-like flow in pipes was also observed. The data from the experiments were analyzed using Darcy's law and using the concept of friction factor and equivalent Reynold's number for two-phase flow. For both smooth- and rough-walled fractures a clear relationship between relative permeability and saturation was seen. The calculated relative permeability curves follow Corey-type behavior and can be modeled using Honarpour expressions. The sum of the relative permeabilities is not equal one, indicating phase interference. The equivalent homogeneous single-phase approach did not give satisfactory representation of flow through fractures. The graphs of experimentally derived friction factor with the modified Reynolds number do not reveal a distinctive linear relationship.

  18. Stress-related cardiomyopathies

    PubMed Central

    2011-01-01

    Stress-related cardiomyopathies can be observed in the four following situations: Takotsubo cardiomyopathy or apical ballooning syndrome; acute left ventricular dysfunction associated with subarachnoid hemorrhage; acute left ventricular dysfunction associated with pheochromocytoma and exogenous catecholamine administration; acute left ventricular dysfunction in the critically ill. Cardiac toxicity was mediated more by catecholamines released directly into the heart via neural connection than by those reaching the heart via the bloodstream. The mechanisms underlying the association between this generalized autonomic storm secondary to a life-threatening stress and myocardial toxicity are widely discussed. Takotsubo cardiomyopathy has been reported all over the world and has been acknowledged by the American Heart Association as a form of reversible cardiomyopathy. Four "Mayo Clinic" diagnostic criteria are required for the diagnosis of Takotsubo cardiomyopathy: 1) transient left ventricular wall motion abnormalities involving the apical and/or midventricular myocardial segments with wall motion abnormalities extending beyond a single epicardial coronary artery distribution; 2) absence of obstructive epicardial coronary artery disease that could be responsible for the observed wall motion abnormality; 3) ECG abnormalities, such as transient ST-segment elevation and/or diffuse T wave inversion associated with a slight troponin elevation; and 4) the lack of proven pheochromocytoma and myocarditis. ECG changes and LV dysfunction occur frequently following subarachnoid hemorrhage and ischemic stroke. This entity, referred as neurocardiogenic stunning, was called neurogenic stress-related cardiomyopathy. Stress-related cardiomyopathy has been reported in patients with pheochromocytoma and in patients receiving intravenous exogenous catecholamine administration. The role of a huge increase in endogenous and/or exogenous catecholamine level in critically ill patients

  19. ADCY5-related dyskinesia

    PubMed Central

    Chen, Dong-Hui; Méneret, Aurélie; Friedman, Jennifer R.; Korvatska, Olena; Gad, Alona; Bonkowski, Emily S.; Stessman, Holly A.; Doummar, Diane; Mignot, Cyril; Anheim, Mathieu; Bernes, Saunder; Davis, Marie Y.; Damon-Perrière, Nathalie; Degos, Bertrand; Grabli, David; Gras, Domitille; Hisama, Fuki M.; Mackenzie, Katherine M.; Swanson, Phillip D.; Tranchant, Christine; Vidailhet, Marie; Winesett, Steven; Trouillard, Oriane; Amendola, Laura M.; Dorschner, Michael O.; Weiss, Michael; Eichler, Evan E.; Torkamani, Ali; Roze, Emmanuel

    2015-01-01

    Objective: To investigate the clinical spectrum and distinguishing features of adenylate cyclase 5 (ADCY5)–related dyskinesia and genotype–phenotype relationship. Methods: We analyzed ADCY5 in patients with choreiform or dystonic movements by exome or targeted sequencing. Suspected mosaicism was confirmed by allele-specific amplification. We evaluated clinical features in our 50 new and previously reported cases. Results: We identified 3 new families and 12 new sporadic cases with ADCY5 mutations. These mutations cause a mixed hyperkinetic disorder that includes dystonia, chorea, and myoclonus, often with facial involvement. The movements are sometimes painful and show episodic worsening on a fluctuating background. Many patients have axial hypotonia. In 2 unrelated families, a p.A726T mutation in the first cytoplasmic domain (C1) causes a relatively mild disorder of prominent facial and hand dystonia and chorea. Mutations p.R418W or p.R418Q in C1, de novo in 13 individuals and inherited in 1, produce a moderate to severe disorder with axial hypotonia, limb hypertonia, paroxysmal nocturnal or diurnal dyskinesia, chorea, myoclonus, and intermittent facial dyskinesia. Somatic mosaicism is usually associated with a less severe phenotype. In one family, a p.M1029K mutation in the C2 domain causes severe dystonia, hypotonia, and chorea. The progenitor, whose childhood-onset episodic movement disorder almost disappeared in adulthood, was mosaic for the mutation. Conclusions: ADCY5-related dyskinesia is a childhood-onset disorder with a wide range of hyperkinetic abnormal movements. Genotype-specific correlations and mosaicism play important roles in the phenotypic variability. Recurrent mutations suggest particular functional importance of residues 418 and 726 in disease pathogenesis. PMID:26537056

  20. Studies Relating to EVA

    NASA Technical Reports Server (NTRS)

    1997-01-01

    In this session, Session JA1, the discussion focuses on the following topics: The Staged Decompression to the Hypobaric Atmosphere as a Prophylactic Measure Against Decompression Sickness During Repetitive EVA; A New Preoxygenation Procedure for Extravehicular Activity (EVA); Metabolic Assessments During Extra-Vehicular Activity; Evaluation of Safety of Hypobaric Decompressions and EVA From Positions of Probabilistic Theory; Fatty Acid Composition of Plasma Lipids and Erythrocyte Membranes During Simulation of Extravehicular Activity; Biomedical Studies Relating to Decompression Stress with Simulated EVA, Overview; The Joint Angle and Muscle Signature (JAMS) System - Current Uses and Future Applications; and Experimental Investigation of Cooperative Human-Robotic Roles in an EVA Work Site.

  1. Tachyons in general relativity

    SciTech Connect

    Schwartz, Charles

    2011-05-15

    We consider the motion of tachyons (faster-than-light particles) in the framework of general relativity. An important feature is the large contribution of low energy tachyons to the energy-momentum tensor. We also calculate the gravitational field produced by tachyons in particular geometric arrangements; and it appears that there could be self-cohering bundles of such matter. This leads us to suggest that such theoretical ideas might be relevant to major problems (dark matter and dark energy) in current cosmological models.

  2. [Allergy-related emergencies].

    PubMed

    Kaufman, E; Garfunkel, A; Galili, D; Zusman, S P; Malamed, S F; Findler, M; Elad, S

    2002-01-01

    Allergic reactions can develop to any of the drugs or materials commonly used in dentistry. They exhibit a broad range of clinical signs and symptoms ranging from mild, delayed reactions to immediate and life-threatening reactions developing within seconds. Allergies usually manifest themselves in reactions that are related to histamine release in one of three ways: skin reactions, respiratory problems and anaphylaxis. Anaphylaxis is the most critical allergic reaction in the dental environment. Measures such as airway management, oxygen supplementation, antihistamine, adrenaline and corticosteroid medication, cardiopulmonary resuscitation and evacuation to the emergency room, may be necessary.

  3. The Viking Relativity Experiment

    NASA Technical Reports Server (NTRS)

    Shapiro, I. I.; Reasenberg, R. D.; Macneil, P. E.; Goldstein, R. B.; Brenkle, J. P.; Cain, D. L.; Komarek, T.; Zygielbaum, A. I.; Cuddihy, W. F.; Michael, W. H., Jr.

    1977-01-01

    Measurements of the round-trip time of flight of radio signals transmitted from the earth to the Viking spacecraft are being analyzed to test the predictions of Einstein's theory of general relativity. According to this theory the signals will be delayed by up to approximately 250 microsec owing to the direct effect of solar gravity on the propagation. A very preliminary qualitative analysis of the Viking data obtained near the 1976 superior conjunction of Mars indicates agreement with the predictions to within the estimated uncertainty of 0.5%.

  4. Cosmological special relativity

    NASA Astrophysics Data System (ADS)

    Carmeli, M.

    1996-03-01

    Recently we presented a new special relativity theory for cosmology in which it was assumed that gravitation can be neglected and thus the bubble constant can be taken as a constant. The theory was presented in a six-dimensional hvperspace. three for the ordinary space and three for the velocities. In this paper we reduce our hyperspace to four dimensions by assuming that the three-dimensional space expands only radially, thus one is left with the three dimensions of ordinary space and one dimension of the radial velocity.

  5. The Viking Relativity Experiment

    NASA Technical Reports Server (NTRS)

    Shapiro, I. I.; Reasenberg, R. D.; Macneil, P. E.; Goldstein, R. B.; Brenkle, J. P.; Cain, D. L.; Komarek, T.; Zygielbaum, A. I.; Cuddihy, W. F.; Michael, W. H., Jr.

    1977-01-01

    Measurements of the round-trip time of flight of radio signals transmitted from the earth to the Viking spacecraft are being analyzed to test the predictions of Einstein's theory of general relativity. According to this theory the signals will be delayed by up to approximately 250 microsec owing to the direct effect of solar gravity on the propagation. A very preliminary qualitative analysis of the Viking data obtained near the 1976 superior conjunction of Mars indicates agreement with the predictions to within the estimated uncertainty of 0.5%.

  6. Liraglutide-related cholelithiasis.

    PubMed

    Korkmaz, Hakan; Araz, Mustafa; Alkan, Samet; Akarsu, Ersin

    2015-10-01

    Liraglutide is a glucagon-like peptide-1 analog and recently started to be using as an incretin-based treatment for diabetes mellitus. Liraglutide causes some adverse affects including nausea, vomiting, acute nasopharyngitis and acute pancreatitis. However, development of liraglutide-dependent cholelithiasis has not been reported in the literature. A 75-year-old female patient had been diagnosed with type 2 diabetes mellitus for 10 years and she has been treated by liraglutide for 6 months. The patient was admitted to the emergency service due to sudden onset of abdominal pain. After laboratory and imaging studies, she was diagnosed with acute cholecystitis and cholelithiasis. And then patient's oral intake was stopped, intravenous fluid and ceftriaxone 2 g/day were started. Furthermore, liraglutide treatment discontinued and ursodeoxycholic acid (UDCA) was started to treat cholelithiasis. During follow-up, abdominal pain completely relieved. Hepatobiliary ultrasonography in sixth month follow-up showed entirely regression of cholelithiasis. Any liraglutide-related cholelithiasis case has not been reported in the literature previously. Therefore, our case is the first case. Especially, elderly diabetic patients who are started to liraglutide treatment should be monitored closely for the formation of cholelithiasis. UDCA treatment would be an alternative prior to surgical treatment for liraglutide-related cholelithiasis.

  7. [Age related macular degeneration].

    PubMed

    Sayen, Alexandra; Hubert, Isabelle; Berrod, Jean-Paul

    2011-02-01

    Age-related macular degeneration (ARMD) is a multifactorial disease caused by a combination of genetic and environmental factors. It is the first cause of blindness in patients over 50 in the western world. The disease has been traditionally classified into early and late stages with dry (atrophic) and wet (neovascular) forms: neovascular form is characterized by new blood vessels development under the macula (choroidal neovascularisation) which lead to a rapid decline of vision associated with metamorphopsia and requiring an urgent ophtalmological examination. Optical coherence tomography is now one of the most important part of the examination for diagnosis and treatment. Patient with age related maculopathy should consider taking a dietary supplement such that used in AREDS. The treatment of the wet ARMD has largely beneficied since year 2006 of anti-VEGF (vascular endothelial growth factor) molecules such as ranibizumab or bevacizumab given as repeated intravitreal injections. A systematic follow up each 4 to 8 week in required for several years. There is no effective treatment at the moment for dry AMD. For patients with binocular visual acuity under 60/200 rehabilitation includes low vision specialist, vision aids and psychological support.

  8. Heat-related illness.

    PubMed

    Becker, Jonathan A; Stewart, Lynsey K

    2011-06-01

    Heat-related illness is a set of preventable conditions ranging from mild forms (e.g., heat exhaustion, heat cramps) to potentially fatal heat stroke. Hot and humid conditions challenge cardiovascular compensatory mechanisms. Once core temperature reaches 104°F (40°C), cellular damage occurs, initiating a cascade of events that may lead to organ failure and death. Early recognition of symptoms and accurate measurement of core temperature are crucial to rapid diagnosis. Milder forms of heat-related illness are manifested by symptoms such as headache, weakness, dizziness, and an inability to continue activity. These are managed by supportive measures including hydration and moving the patient to a cool place. Hyperthermia and central nervous system symptoms should prompt an evaluation for heat stroke. Initial treatments should focus on lowering core temperature through cold water immersion. Applying ice packs to the head, neck, axilla, and groin is an alternative. Additional measures include transporting the patient to a cool environment, removing excess clothing, and intravenous hydration. Delayed access to cooling is the leading cause of morbidity and mortality in persons with heat stroke. Identification of at-risk groups can help physicians and community health agencies provide preventive measures.

  9. PMAG: Relational Database Definition

    NASA Astrophysics Data System (ADS)

    Keizer, P.; Koppers, A.; Tauxe, L.; Constable, C.; Genevey, A.; Staudigel, H.; Helly, J.

    2002-12-01

    The Scripps center for Physical and Chemical Earth References (PACER) was established to help create databases for reference data and make them available to the Earth science community. As part of these efforts PACER supports GERM, REM and PMAG and maintains multiple online databases under the http://earthref.org umbrella website. This website has been built on top of a relational database that allows for the archiving and electronic access to a great variety of data types and formats, permitting data queries using a wide range of metadata. These online databases are designed in Oracle 8.1.5 and they are maintained at the San Diego Supercomputer Center. They are directly available via http://earthref.org/databases/. A prototype of the PMAG relational database is now operational within the existing EarthRef.org framework under http://earthref.org/databases/PMAG/. As will be shown in our presentation, the PMAG design focuses around the general workflow that results in the determination of typical paleo-magnetic analyses. This ensures that individual data points can be traced between the actual analysis and the specimen, sample, site, locality and expedition it belongs to. These relations guarantee traceability of the data by distinguishing between original and derived data, where the actual (raw) measurements are performed on the specimen level, and data on the sample level and higher are then derived products in the database. These relations may also serve to recalculate site means when new data becomes available for that locality. The PMAG data records are extensively described in terms of metadata. These metadata are used when scientists search through this online database in order to view and download their needed data. They minimally include method descriptions for field sampling, laboratory techniques and statistical analyses. They also include selection criteria used during the interpretation of the data and, most importantly, critical information about the

  10. Amphetamine derivative related deaths.

    PubMed

    Lora-Tamayo, C; Tena, T; Rodríguez, A

    1997-02-28

    Amphetamine its methylendioxy (methylendioxyamphetamine methylenedioxymethylamphetamine, methylenedioxyethylamphetamine) and methoxy derivatives (p-methoxyamphetamine and p-methoxymethylamphetamine) are widely abused in Spanish society. We present here the results of a systematic study of all cases of deaths brought to the attention of the Madrid department of the Instituto Nacional de Toxicologia from 1993 to 1995 in which some of these drugs have been found in the cadaveric blood. The cases were divided into three categories: amphetamine and derivatives, amphetamines and alcohol, amphetamines and other drugs. Data on age, sex, clinical symptoms, morphological findings, circumstances of death, when known, and concentration of amphetamine derivatives, alcohol and other drugs in blood are given for each group. The information provided here may prove to be useful for the forensic interpretation of deaths which are directly or indirectly related to abuse of amphetamine derivatives.

  11. Tachyons and Pseudotachyonic Relativity

    NASA Astrophysics Data System (ADS)

    Ferreira, Luís Filipe T. Dias

    2007-03-01

    I propose a reinterpretation of "Lorentz tachyonic transformations" — for |v| > c — and subsequently the fundaments of a Pseudotachyonic Relativity. We'll see that some usually "absurd results" become comprehensible. Besides some brief reflections on issues of time inversion and causality, the main ideas and conclusions presented here are: • a tachyonic reference frame may only be detected as its "associated frame", which has lower-than-light velocity (v = c2/v) and in which time appears in an inverted flow; • we cannot directly detect tachyons but instead their pseudotachyonic "images". • information cannot be communicated in a faster-thanlight way. In a future article, I intend to show how these new transformations naturally conduce to a strictly relativistic conception of antimatter: in brief, an antiparticle is no more then the subluminal "image" of a tachyonic homologous particle.

  12. [Sleep related movement disorders].

    PubMed

    Suzuki, Keisuke; Miyamoto, Masayuki; Miyamoto, Tomoyuki; Hirata, Koichi

    2015-06-01

    Sleep related movement disorders (SRMD) are characterized by simple, stereotyped movements occur during sleep, with the exception of restless legs syndrome (RLS). RLS has the following essential features; an urge to move the legs usually accompanied by uncomfortable sensation in the legs, improvement of symptoms after movement (non-stereotypical movements, such as walking and stretching, to reduce symptoms), and symptoms occur or worsen during periods of rest and in the evening and night. However, RLS is closely associated with periodic limb movement, which shows typical stererotyped limb movements. In the International Classification of Sleep Disorders, 3rd edition, sleep disturbances or daytime symptoms are prerequiste for a diagnosis of SRMD. We here review diagnosis and treatment of SRMD.

  13. Collapse and Relativity

    SciTech Connect

    Tumulka, Roderich

    2006-06-27

    Ever since we have been in the possession of quantum theories without observers, such as Bohmian mechanics or the Ghirardi-Rimini-Weber (GRW) theory of spontaneous wave function collapse, a major challenge in the foundations of quantum mechanics is to devise a relativistic quantum theory without observers. One of the difficulties is to reconcile nonlocality with relativity. I report about recent progress in this direction based on the GRW model: A relativistic version of the model has been devised for the case of N noninteracting (but entangled) particles. A key ingredient was to focus not on the evolution of the wave function but rather on the evolution of the matter in space-time as determined by the wave function.

  14. Relative constraints and evolution

    NASA Astrophysics Data System (ADS)

    Ochoa, Juan G. Diaz

    2014-03-01

    Several mathematical models of evolving systems assume that changes in the micro-states are constrained to the search of an optimal value in a local or global objective function. However, the concept of evolution requires a continuous change in the environment and species, making difficult the definition of absolute optimal values in objective functions. In this paper, we define constraints that are not absolute but relative to local micro-states, introducing a rupture in the invariance of the phase space of the system. This conceptual basis is useful to define alternative mathematical models for biological (or in general complex) evolving systems. We illustrate this concept with a modified Ising model, which can be useful to understand and model problems like the somatic evolution of cancer.

  15. Small Mercury Relativity Orbiter

    NASA Technical Reports Server (NTRS)

    Bender, Peter L.; Vincent, Mark A.

    1989-01-01

    The accuracy of solar system tests of gravitational theory could be very much improved by range and Doppler measurements to a Small Mercury Relativity Orbiter. A nearly circular orbit at roughly 2400 km altitude is assumed in order to minimize problems with orbit determination and thermal radiation from the surface. The spacecraft is spin-stabilized and has a 30 cm diameter de-spun antenna. With K-band and X-band ranging systems using a 50 MHz offset sidetone at K-band, a range accuracy of 3 cm appears to be realistically achievable. The estimated spacecraft mass is 50 kg. A consider-covariance analysis was performed to determine how well the Earth-Mercury distance as a function of time could be determined with such a Relativity Orbiter. The minimum data set is assumed to be 40 independent 8-hour arcs of tracking data at selected times during a two year period. The gravity field of Mercury up through degree and order 10 is solved for, along with the initial conditions for each arc and the Earth-Mercury distance at the center of each arc. The considered parameters include the gravity field parameters of degree 11 and 12 plus the tracking station coordinates, the tropospheric delay, and two parameters in a crude radiation pressure model. The conclusion is that the Earth-Mercury distance can be determined to 6 cm accuracy or better. From a modified worst-case analysis, this would lead to roughly 2 orders of magnitude improvement in the knowledge of the precession of perihelion, the relativistic time delay, and the possible change in the gravitational constant with time.

  16. Small Mercury Relativity Orbiter

    NASA Astrophysics Data System (ADS)

    Bender, Peter L.; Vincent, Mark A.

    1989-08-01

    The accuracy of solar system tests of gravitational theory could be very much improved by range and Doppler measurements to a Small Mercury Relativity Orbiter. A nearly circular orbit at roughly 2400 km altitude is assumed in order to minimize problems with orbit determination and thermal radiation from the surface. The spacecraft is spin-stabilized and has a 30 cm diameter de-spun antenna. With K-band and X-band ranging systems using a 50 MHz offset sidetone at K-band, a range accuracy of 3 cm appears to be realistically achievable. The estimated spacecraft mass is 50 kg. A consider-covariance analysis was performed to determine how well the Earth-Mercury distance as a function of time could be determined with such a Relativity Orbiter. The minimum data set is assumed to be 40 independent 8-hour arcs of tracking data at selected times during a two year period. The gravity field of Mercury up through degree and order 10 is solved for, along with the initial conditions for each arc and the Earth-Mercury distance at the center of each arc. The considered parameters include the gravity field parameters of degree 11 and 12 plus the tracking station coordinates, the tropospheric delay, and two parameters in a crude radiation pressure model. The conclusion is that the Earth-Mercury distance can be determined to 6 cm accuracy or better. From a modified worst-case analysis, this would lead to roughly 2 orders of magnitude improvement in the knowledge of the precession of perihelion, the relativistic time delay, and the possible change in the gravitational constant with time.

  17. Directions in General Relativity

    NASA Astrophysics Data System (ADS)

    Hu, B. L.; Ryan, M. P., Jr.; Vishveshwara, C. V.

    2005-10-01

    Preface; Dieter Brill: a spacetime perspective; 1. Thawing the frozen formalism: the difference between observables and what we observe A. Anderson; 2. Jacobi's action and the density of states J. D. Brown and J. W. York; 3. Decoherence of correlation histories E. Calzetta and B. L. Hu; 4. The initial value problem in light of Ashtekar's variables R. Capovilla, J. Dell and T. Jacobson; 5. Status report on an axiomatic basis for functional integration P. Cartier and C. DeWitt-Morette; 6. Solution of the coupled Einstein constraints on asymptotically Euclidean manifolds Y. Choquet-Bruhat; 7. Compact Cauchy horizons and Cauchy surfaces P. Chrusciel and J. Isenberg; 8. The classical electron J. M. Cohen and E. Mustafa; 9. Gauge (in)variance, mass and parity in D=3 revisited S. Deser; 10. Triality, exceptional Lie groups and Dirac operators F. Flaherty; 11. The reduction of the state vector and limitations on measurement in the quantum mechanics of closed systems J. B. Hartle; 12 Quantum linearization instabilities of de Sitter spacetime A. Higuchi; 13. What is the true description of charged black holes? G. T. Horowitz; 14. Limits on the adiabatic index in static stellar models L. Lindblom and A. K. M. Masood-ul-Alam; 15. On the relativity of rotation B. Mashhoon; 16. Recent progress and open problems in linearization stability V. E. Moncrief; 17. Brill waves N. Ó Murchadha; 18. You can't get there from here: constraints on topology change K. Schleich and D. M. Witt; 19. Time, measurement and information loss in quantum cosmology L. Smolin; 20. Impossible measurements on quantum fields R. Sorkin; 21. A new condition implying the existence of a constant mean curvature foliation F. J. Tipler; 22. Maximal slices in stationary spacetimes with ergoregions R. M. Wald; 23. (1 + 1) - Dimensional methods for general relativity J. H. Yoon; 24. Coalescence of primal gravity waves to make cosmological mass without matter D. E. Holz, W. A. Miller, M. Wakano and J. A. Wheeler.

  18. Alcohol-Related Liver Disease

    MedlinePlus

    ... events. Please support us. Donate | Volunteer Alcohol-Related Liver Disease Discussion on Inspire Support Community Join the ... Disease Information > Alcohol-Related Liver Disease Alcohol-Related Liver Disease Explore this section to learn more about ...

  19. Sports-related concussion

    PubMed Central

    Torres, Daniel M.; Galetta, Kristin M.; Phillips, H. Westley; Dziemianowicz, E. Mark S.; Wilson, James A.; Dorman, Emily S.; Laudano, Eric; Galetta, Steven L.

    2013-01-01

    Summary Studies suggest that a lack of standardized knowledge may lead to underreporting and undertreatment of sports-related concussion. However, there has been little work done to establish how this knowledge may affect athletes’ behaviors toward reporting their concussions and removing themselves from play. We conducted an anonymous online survey to assess athletes’ knowledge of signs and symptoms of concussion, and also sought to estimate the potential frequency of underreporting in a collegiate athlete cohort. Among 262 athletes who responded to the survey, 43% of those with a history of concussion reported that they had knowingly hidden symptoms of a concussion to stay in a game, and 22% of athletes overall indicated that they would be unlikely or very unlikely to report concussion symptoms to a coach or athletic trainer in the future. These data suggest that there may be a substantial degree of underreporting of concussion among collegiate athletes, despite most acknowledging that they have been formally educated about the risks of concussion. PMID:24195017

  20. Sports related to drowning.

    PubMed

    Szpilman, David; Orlowski, James P

    2016-09-01

    Aquatic sports are included in the top list of risky practices as the environment per se carries a possibility of death by drowning if not rescued in time. Not only are aquatic sports related to a high risk of death, but also all sports practiced on the water, over the water and on ice. Whatever the reason a person is in the water, drowning carries a higher possibility of death if the individual is unable to cope with the water situation, which may simply be caused by an inability to stay afloat and get out of the water or by an injury or disease that may lead to physical inability or unconsciousness. The competitive nature of sports is a common pathway that leads the sports person to exceed their ability to cope with the environment or simply misjudge their physical capability. Drowning involves some principles and medical interventions that are rarely found in other medical situations as it occurs in a deceptively hostile environment that may not seem dangerous. Therefore, it is essential that health professionals are aware of the complete sequence of action in drowning. This article focuses on the pulmonary injury in sports and recreational activities where drowning plays the major role. Copyright ©ERS 2016.

  1. Travel-related thrombosis.

    PubMed

    Cannegieter, Suzanne C

    2012-09-01

    Travel-related thrombosis is a serious public health concern considering the large and increasing number of travellers. Due to a lack of evidence, counselling air travellers on their venous thrombosis risk is not immediately straightforward, and advice will have to be based mostly on theoretical grounds. In this review a basis for these considerations is given. First of all it needs to be recognized that venous thrombosis is a multicausal disease, i.e. several risk factors have to be present before an event occurs. This is reflected in the literature where clearly increased risks have been described for certain groups, such as subjects with factor V Leiden, those who use oral contraceptives or are obese. Also, an increased risk for tall and short people has been reported. So, for subjects with a known risk factor who plan to travel, benefits and risks of thrombosis prophylaxis, (pharmacological or other), need to be weighed. This review provides some theoretical examples. For all other travellers, the advice to move and exercise as much as possible is likely to be sufficient.

  2. Nephronophthisis and related syndromes

    PubMed Central

    Wolf, Matthias T.F.

    2015-01-01

    Purpose of review Nephronophthisis (NPHP) represents an autosomal recessive cystic kidney disease and is one of the most common genetic disorders causing end-stage renal disease (ESRD) in children and adolescents. NPHP is a genetically heterogenous disorder with twenty identified genes. NPHP occurs as an isolated kidney disease but approxmiately 15% of NPHP patients have additional extrarenal symptoms affecting other organs (e.g. eyes, liver, bones, and CNS). The pleiotropy in NPHP is explained by the finding that almost all NPHP gene products share expression in primary cilia, a sensory organelle present in most mammalian cells. If extrarenal symptoms are present in addition to NPHP, these disorders are classified as NPHP-related ciliopathies (NPHP-RC). This review provides an update about the recent advances in the field of NPHP-RC. Recent findings The identification of novel disease-causing genes has improved our understanding of pathomechanisms contributing to NPHP-RC. Multiple interactions between different NPHP-RC gene products have been published and outline the interconnectivity of the affected proteins and shared pathways. Summary The significance of recently identified genes for NPHP-RC is discussed and the complex role and interaction of NPHP proteins in ciliary function and cellular signaling pathways is highlighted. PMID:25635582

  3. Neural relativity principle

    NASA Astrophysics Data System (ADS)

    Koulakov, Alexei

    Olfaction is the final frontier of our senses - the one that is still almost completely mysterious to us. Despite extensive genetic and perceptual data, and a strong push to solve the neural coding problem, fundamental questions about the sense of smell remain unresolved. Unlike vision and hearing, where relatively straightforward relationships between stimulus features and neural responses have been foundational to our understanding sensory processing, it has been difficult to quantify the properties of odorant molecules that lead to olfactory percepts. In a sense, we do not have olfactory analogs of ``red'', ``green'' and ``blue''. The seminal work of Linda Buck and Richard Axel identified a diverse family of about 1000 receptor molecules that serve as odorant sensors in the nose. However, the properties of smells that these receptors detect remain a mystery. I will review our current understanding of the molecular properties important to the olfactory system. I will also describe a theory that explains how odorant identity can be preserved despite substantial changes in the odorant concentration.

  4. Sleep-related violence.

    PubMed

    Moldofsky, H; Gilbert, R; Lue, F A; MacLean, A W

    1995-11-01

    We hypothesized that sleep-related violent behavior associated with parasomnias occurs as the result of a diathesis and is precipitated by stressors and mediated by disturbed nonrapid eye movement (NREM) sleep physiology. Sixty-four consecutive adult patients (mean age 30 years) who were investigated for sleepwalking or sleep terrors were categorized according to clinical history into three groups: serious violence during sleep to other people or to property or self (n = 26); harmful, but not destructive behavior (n = 12); and nonviolent behavior (n = 26). Log linear analysis showed that a diathesis (childhood parasomnia and/or family history of parasomnia) and a stressor (psychologic distress, substance abuse and sleep schedule disorder) predicted the presence of sleepwalking or night terror. Serious violent acts were more likely to occur with males (p < 0.004) who showed sleep schedule disorder (p < 0.03). Both harmful and serious violent sleep behavior occurred with drug abuse (p < 0.009). In comparison to all other groups, those who were violent to other people were males who experienced more stressors (p < 0.02), drank excessive caffeinated beverages, abused drugs (p < 0.03) and showed less stage 4 sleep (p < 0.02) and less alpha (7.5-11 Hz) electroencephalogram NREM sleep (p < 0.02) on polysomnography. Being male and having < 2% stage 4 sleep provided 89% sensitivity, 80% specificity and 81% diagnostic accuracy for individuals who were violent to others. The forensic implications of these findings are discussed.

  5. Relative Critical Points

    NASA Astrophysics Data System (ADS)

    Lewis, Debra

    2013-05-01

    Relative equilibria of Lagrangian and Hamiltonian systems with symmetry are critical points of appropriate scalar functions parametrized by the Lie algebra (or its dual) of the symmetry group. Setting aside the structures - symplectic, Poisson, or variational - generating dynamical systems from such functions highlights the common features of their construction and analysis, and supports the construction of analogous functions in non-Hamiltonian settings. If the symmetry group is nonabelian, the functions are invariant only with respect to the isotropy subgroup of the given parameter value. Replacing the parametrized family of functions with a single function on the product manifold and extending the action using the (co)adjoint action on the algebra or its dual yields a fully invariant function. An invariant map can be used to reverse the usual perspective: rather than selecting a parametrized family of functions and finding their critical points, conditions under which functions will be critical on specific orbits, typically distinguished by isotropy class, can be derived. This strategy is illustrated using several well-known mechanical systems - the Lagrange top, the double spherical pendulum, the free rigid body, and the Riemann ellipsoids - and generalizations of these systems.

  6. Sports-Related Concussion.

    PubMed

    Laker, Scott R

    2015-08-01

    Sports-related concussions (SRC) are common in all ages and occur in all sports. The diagnosis based on clinical suspicion after more serious injury is ruled out. Symptoms of concussion are due to a temporary and reversible neurometabolic cascade resulting in blood flow changes, neuronal excitotoxicity, ionic shifts, and mitochondrial changes. Symptoms are nonspecific, and commonly include headache, cognitive complaints, photophobia, and phonophobia. Loss of consciousness is rare in SRC and has limited influence on recovery and prognosis. Imaging has a limited role in the management of concussion and should be used to evaluate for more serious intracranial pathology. Treatment is based on symptoms and an understanding of the typical, rapid (7-10 days) recovery. No athlete should return to play until their symptoms have resolved and they have completed a supervised, step-wise return to play protocol. The article covers the most recent literature on the diagnosis and management of SRC, including evidence-based recommendations and expert-based consensus opinion. The article will also discuss issues regarding medical retirement, legislation, and future concepts in concussion diagnosis and management.

  7. Sucrose and Related Oligosaccharides

    NASA Astrophysics Data System (ADS)

    Eggleston, Gillian

    Sucrose (α-D-glucopyranosyl-(1↔2)-β-D-fructofuranoside) is the most common low-molecular-weight sugar found in the plant kingdom. It is ubiquitously known as common table sugar and primarily produced industrially from sugarcane (Saccharum officinarum) and sugar beet (Beta vulgaris); the basics of the industrial manufacture of sucrose are outlined in this chapter. Commercial sucrose has a very high purity (> 99.9%) making it one of the purest organic substances produced on an industrial scale. Value-addition to sucrose via chemical and biotechnological reactions is becoming more important for the diversification of the sugar industry to maintain the industries' competitiveness in a world increasingly turning to a bio-based economy. The basis for the chemical reactivity of sucrose is the eight hydroxyl groups present on the molecule, although, sucrose chemical reactivity is regarded as difficult. Increasing use of enzymatic biotechnological techniques to derivatize sucrose is expected, to add special functionalities to sucrose products like biodegradability, biocompatibility, and non-toxicity. Analysis of sucrose by colorimetric, enzymatic, oxidation-reduction and chromatography methods are discussed. Oligosaccharides related to sucrose are outlined in detail and include sucrose-based plant, honey and in vitro oligosaccharides.

  8. Relations between demographic parameters.

    PubMed

    Demetrius, L

    1979-05-01

    The mean life-expectancy e describes the average prospective life-time of an individual aged zero. This parameter can be explicitly described in terms of the survivorship distribution of the population. The Malthusian parameter r represents the asymptotic growth rate of a population. This parameter can be implicitly expressed in terms of the net-maternity distribution. The parameters e and r incompletely incorporate the age-specific fertility and mortality pattern of a population; distinct populations may have the same growth rate but different net-maternity functions; distinct populations may be characterized by the same mean life expectation but may have different survivorship distributions. This article analyzes a class of parameters called the entropy of a population (Demetrius, 1974a) which distinguishes between net-maternity functions with the same growth rate and also mortality distributions with the same mean life expectation. This class of parameters measures the convexity of the fertility and mortality distributions. This paper analyzes the relations between the entropy parameter and the standard demographic parameters.

  9. Cystic fibrosis related diabetes.

    PubMed

    O'Shea, Donal; O'Connell, Jean

    2014-08-01

    Improved life expectancy in cystic fibrosis (CF) has led to an expanding population of adults with CF, now representing almost 50 % of the total CF population. This creates new challenges from long-term complications such as diabetes mellitus (DM), a condition that is present in 40 %-50 % of adults with CF. Cystic fibrosis-related diabetes (CFRD) results from a primary defect of insulin deficiency and although sharing features with type 1 (DM1) and type 2 diabetes (DM2), it is a clinically distinct condition. Progression to diabetes is associated with poorer CF clinical outcomes and increased mortality. CFRD is not associated with an increased risk of cardiovascular disease and the prevalence of microvascular complications is lower than DM1 or DM2. Rather, the primary goal of insulin therapy is the preservation of lung function and optimization of nutritional status. There is increasing evidence that appropriate screening and early intervention with insulin can reverse weight loss and improve pulmonary function. This approach may include targeting postprandial hyperglycemia not detected by standard diagnostic tests such as the oral glucose tolerance test. Further clinical research is required to guide when and how much to intervene in patients who are already dealing with the burden of one chronic illness.

  10. Affine Sphere Relativity

    NASA Astrophysics Data System (ADS)

    Minguzzi, E.

    2017-03-01

    We investigate spacetimes whose light cones could be anisotropic. We prove the equivalence of the structures: (a) Lorentz-Finsler manifold for which the mean Cartan torsion vanishes, (b) Lorentz-Finsler manifold for which the indicatrix (observer space) at each point is a convex hyperbolic affine sphere centered on the zero section, and (c) pair given by a spacetime volume and a sharp convex cone distribution. The equivalence suggests to describe (affine sphere) spacetimes with this structure, so that no algebraic-metrical concept enters the definition. As a result, this work shows how the metric features of spacetime emerge from elementary concepts such as measure and order. Non-relativistic spacetimes are obtained replacing proper spheres with improper spheres, so the distinction does not call for group theoretical elements. In physical terms, in affine sphere spacetimes the light cone distribution and the spacetime measure determine the motion of massive and massless particles (hence the dispersion relation). Furthermore, it is shown that, more generally, for Lorentz-Finsler theories non-differentiable at the cone, the lightlike geodesics and the transport of the particle momentum over them are well defined, though the curve parametrization could be undefined. Causality theory is also well behaved. Several results for affine sphere spacetimes are presented. Some results in Finsler geometry, for instance in the characterization of Randers spaces, are also included.

  11. [Chronotherapy and relativity theory].

    PubMed

    Polishchuk, N A

    2008-01-01

    The course of time itself in alive organisms is treated from positions of the special theory of the relativity created by A. Einstein in 1905 and added by the Nobel winners H.A.Lorentsem, M. Plankom, M. fon Laue. These achievements of fundamental physics have been put in a basis of special medical technology "Resonant chronophytotherapy" (SMT RCPT) which is applied in practice of treatment of chronic diseases for 27 years. Grass tinctures in various dosages are used in SMT RCPT, which patients take once a day during precisely designated time. Parameters "dosage-time" daily vary. SMT RCPT have been conducted in treatment of epilepsy bronchial asthma, rheumatism, sclerodermia, hypertension, chronic glomerulonephritis, vegeto-vascular dystonia, female sterility, circular alopecia, vitiligo, eczema, psoriasis, onychomycosis. SMT RCPT does have adverse events, has no contra-indications to its use, directed, first of all, on elimination of nonspecific signs of a disease, reduces dependence and complications of the use of chemical synthetic preparations. SMT RCPT can be combined with any kind of specific treatment. Internet-variant of SMT RCPT has been developed. Chronomedicine is priority tendency in industrialized countries of the world--the USA, the Great Britain, Germany, France, Russia, China, Japan and appears on lead positions among alternative methods of treatment, both traditional, and non-traditional.

  12. MED12 Related Disorders

    PubMed Central

    Graham, John M.; Schwartz, Charles E.

    2013-01-01

    MED12 is a member of the large Mediator complex, which has a critical and central role in RNA polymerase II transcription. As a multiprotien complex, Mediator regulates signals involved in cell growth, development and differentiation, and it is involved in a protein network required for extraneuronal gene silencing and also functions as a direct suppressor of Gli3-dependent Sonic hedgehog signaling. This may may explain its role in several different X-linked intellectual disability syndromes that share some overlapping clinical features. This review will compare and contrast four different clinical conditions that have been associated with different mutations in MED12, which is located at Xq13. To date, these conditions include Opitz–Kaveggia (FG) syndrome, Lujan syndrome, Ohdo syndrome (Maat-Kievit-Brunner type, or OSMKB), and one large family with profound X-linked intellectual disability due to a novel c.5898insC frameshift mutation that unlike the other 3 syndromes, resulted in affected female carriers and truncation of the MED12 protein. It is likely that more MED12 mutations will be detected in sporadic patients and X-linked families with intellectual disability and dysmorphic features as exome sequencing becomes more commonly utilized, and this overview of MED12-related disorders may help to correlate MED12 genotypes with clinical findings. PMID:24123922

  13. Shaping Relations: Exploiting Relational Features for Visuospatial Priming

    ERIC Educational Resources Information Center

    Livins, Katherine A.; Doumas, Leonidas A. A.; Spivey, Michael J.

    2016-01-01

    Although relational reasoning has been described as a process at the heart of human cognition, the exact character of relational representations remains an open debate. Symbolic-connectionist models of relational cognition suggest that relations are structured representations, but that they are ultimately grounded in feature sets; thus, they…

  14. Shaping Relations: Exploiting Relational Features for Visuospatial Priming

    ERIC Educational Resources Information Center

    Livins, Katherine A.; Doumas, Leonidas A. A.; Spivey, Michael J.

    2016-01-01

    Although relational reasoning has been described as a process at the heart of human cognition, the exact character of relational representations remains an open debate. Symbolic-connectionist models of relational cognition suggest that relations are structured representations, but that they are ultimately grounded in feature sets; thus, they…

  15. Anticoagulation-related nephropathy.

    PubMed

    Wheeler, D S; Giugliano, R P; Rangaswami, J

    2016-03-01

    Anticoagulation-related nephropathy (ARN) is a significant but underdiagnosed complication of anticoagulation that is associated with increased renal morbidity and all-cause mortality. Originally described in patients receiving supratherapeutic doses of warfarin who had a distinct pattern of glomerular hemorrhage on kidney biopsy, ARN is currently defined as acute kidney injury (AKI) without obvious etiology in the setting of an International Normalized Ratio (INR) of > 3.0. The underlying molecular mechanism is thought to be warfarin-induced thrombin depletion; however, newer studies have hinted at an alternative mechanism involving reductions in activated protein C and endothelial protein C receptor signaling. Prompt recognition of ARN is critical, as it is associated with accelerated progression of chronic kidney disease, and significant increases in short-term and long-term all-cause mortality. Prior investigations into ARN have almost universally focused on anticoagulation with warfarin; however, recent case reports and animal studies suggest that it can also occur in patients taking novel oral anticoagulants. Differences in the incidence and severity of ARN between patients taking warfarin and those taking novel oral anticoagulants are unknown; a post hoc analysis of routinely reported adverse renal outcomes in clinical trials comparing warfarin and novel oral anticoagulants found no significant difference in the rates of AKI, a prerequisite for ARN. Given the significant impact of ARN on renal function and all-cause mortality, a thorough understanding of the pathophysiology, molecular mechanisms, clinical spectrum and therapeutic interventions for ARN is crucial to balance the risks and benefits of anticoagulation and optimize treatment.

  16. Relative Dating Via Fractures

    NASA Technical Reports Server (NTRS)

    2005-01-01

    [figure removed for brevity, see original site]

    This VIS image of the eastern part of the Tharsis region illustrates how fractures can be used in relative dating of a surface. The fractured materials on the right side of the image are embayed by younger volcanic flows originating to the west of the image. Note how the younger flows cover the ends of the fractures, and are not at all fractured themselves.

    Image information: VIS instrument. Latitude 43.2, Longitude 269.4 East (90.6 West). 19 meter/pixel resolution.

    Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

    NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

  17. Acupuncture-Related Pneumothorax

    PubMed Central

    Kaneko, Robert T.; Simeon, Erika; Moren, Alexis; Rowell, Susan; Watters, Jennifer M.

    2014-01-01

    Abstract Background: Acupuncture-related pneumothorax (PTX) is a poorly reported complication of thoracic needling. Recent Chinese literature reviews cited PTXs as the most common adverse outcome. Because of delayed presentation, this complication is thought to be underrecognized by acupuncturists and is largely addressed by hospital and emergency room personnel. The goal of this case study was to demonstrate common risk factors for a PTX, the mechanisms for its development, and protocols to use if one is suspected. Case: A 43-year-old, athletic female with chronic neck pain that was poorly managed with oral medications sought an alternative intervention for pain control. Her treatment plan consisted of weekly acupuncture sessions in the prone and supine positions targeting points along the Bladder, Gall Bladder, and Small Intestine meridians, as well as the right scapular Ah Shi point. She also received infrared lamp therapy. The aim of this approach was to help the patient achieve subjective pain reduction and increased range of motion. Results: One hour after her third treatment session, this patient experienced pleuritic chest pain and dyspnea. She was transported to a local Level-1 trauma center by emergency medical services and was diagnosed with a right-sided PTX. Conclusions: The acupoints addressed, a practitioner's knowledge of variations in anatomy, and a patient's body habitus and medical history are risk factors for PTX development. A patient's initial presentation does not predict future outcome. A benign presentation can evolve into a potentially life-threatening cardiovascular collapse. When PTX is suspected, discussing it with the patient and facilitating appropriate evaluation and intervention by a tertiary-care facility is warranted. PMID:25184016

  18. Relative Dating Via Fractures

    NASA Technical Reports Server (NTRS)

    2005-01-01

    [figure removed for brevity, see original site]

    This VIS image of the eastern part of the Tharsis region illustrates how fractures can be used in relative dating of a surface. The fractured materials on the right side of the image are embayed by younger volcanic flows originating to the west of the image. Note how the younger flows cover the ends of the fractures, and are not at all fractured themselves.

    Image information: VIS instrument. Latitude 43.2, Longitude 269.4 East (90.6 West). 19 meter/pixel resolution.

    Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

    NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

  19. Relating theories via renormalization

    NASA Astrophysics Data System (ADS)

    Kadanoff, Leo P.

    2013-02-01

    The renormalization method is specifically aimed at connecting theories describing physical processes at different length scales and thereby connecting different theories in the physical sciences. The renormalization method used today is the outgrowth of 150 years of scientific study of thermal physics and phase transitions. Different phases of matter show qualitatively different behaviors separated by abrupt phase transitions. These qualitative differences seem to be present in experimentally observed condensed-matter systems. However, the "extended singularity theorem" in statistical mechanics shows that sharp changes can only occur in infinitely large systems. Abrupt changes from one phase to another are signaled by fluctuations that show correlation over infinitely long distances, and are measured by correlation functions that show algebraic decay as well as various kinds of singularities and infinities in thermodynamic derivatives and in measured system parameters. Renormalization methods were first developed in field theory to get around difficulties caused by apparent divergences at both small and large scales. However, no renormalization gives a fully satisfactory formulation of field theory. The renormalization (semi-)group theory of phase transitions was put together by Kenneth G. Wilson in 1971 based upon ideas of scaling and universality developed earlier in the context of phase transitions and of couplings dependent upon spatial scale coming from field theory. Correlations among regions with fluctuations in their order underlie renormalization ideas. Wilson's theory is the first approach to phase transitions to agree with the extended singularity theorem. Some of the history of the study of these correlations and singularities is recounted, along with the history of renormalization and related concepts of scaling and universality. Applications, particularly to condensed-matter physics and particle physics, are summarized. This note is partially a

  20. [Relations of the adolescent].

    PubMed

    Arballo Angulo, M A

    1990-01-01

    Adolescents often feel like sexual beings because of the physical and psychological changes produced by their hormones. Adolescents are sometimes disturbed by their newly occurring sexual fantasies and by lack of understanding from their parents of the changes they are experiencing. These factors together with social pressures of various kinds occasionally make the adolescent forget that decisions about how to behave sexually should be made by the individual, not by others. Adolescents should be able to evaluate personal relationships for their positive or destructive qualities. Decisions by adolescents about their sexual behavior and about when a personal relationship should become a sexual relationship are made more difficult by the conflicting social, group, and interpersonal pressures they face. In a good sexual relationship as in a good friendship, the 2 persons feel confident and behave honestly with each other. Neither dominates the other, and the relationship is pleasurable rather than negative for both. According to research, the 1st sexual relations of an adolescent often occur with an adult. Sex is usually unpremeditated and unplanned. Many adolescents are disappointed in their 1st sexual experiences, which may have occurred in unfavorable circumstances. The combination of inadequate sex education and knowledge of what to expect and unrealistically high expectations from movies or stories probably are principal causes of disappointment. Adolescents in the process of maturing from childhood into adulthood are not completely prepared psychologically or socioculturally for parenthood. In Mexico, 75% of 1st unions are believed to begin before the woman is 20 years old. Most adolescents who become pregnant do not use contraception. In 1976, only 16% of new family planning acceptors were believed to be 15-19 years old. The proportion of births to mothers under 18 was estimated to have increased from 3.1% in 1968-70 to 10% in 1976. Adolescent pregnancies

  1. Fault-Related Sanctuaries

    NASA Astrophysics Data System (ADS)

    Piccardi, L.

    2001-12-01

    Beyond the study of historical surface faulting events, this work investigates the possibility, in specific cases, of identifying pre-historical events whose memory survives in myths and legends. The myths of many famous sacred places of the ancient world contain relevant telluric references: "sacred" earthquakes, openings to the Underworld and/or chthonic dragons. Given the strong correspondence with local geological evidence, these myths may be considered as describing natural phenomena. It has been possible in this way to shed light on the geologic origin of famous myths (Piccardi, 1999, 2000 and 2001). Interdisciplinary researches reveal that the origin of several ancient sanctuaries may be linked in particular to peculiar geological phenomena observed on local active faults (like ground shaking and coseismic surface ruptures, gas and flames emissions, strong underground rumours). In many of these sanctuaries the sacred area is laid directly above the active fault. In a few cases, faulting has affected also the archaeological relics, right through the main temple (e.g. Delphi, Cnidus, Hierapolis of Phrygia). As such, the arrangement of the cult site and content of relative myths suggest that specific points along the trace of active faults have been noticed in the past and worshiped as special `sacred' places, most likely interpreted as Hades' Doors. The mythological stratification of most of these sanctuaries dates back to prehistory, and points to a common derivation from the cult of the Mother Goddess (the Lady of the Doors), which was largely widespread since at least 25000 BC. The cult itself was later reconverted into various different divinities, while the `sacred doors' of the Great Goddess and/or the dragons (offspring of Mother Earth and generally regarded as Keepers of the Doors) persisted in more recent mythologies. Piccardi L., 1999: The "Footprints" of the Archangel: Evidence of Early-Medieval Surface Faulting at Monte Sant'Angelo (Gargano, Italy

  2. Teaching Publicity and Media Relations.

    ERIC Educational Resources Information Center

    Midura, Edmund

    Publicity and media relations are basic operations for many public relations practitioners. Establishing a good relationship with the media and getting positive publicity for the sponsoring organization are essential duties for most public relations professionals. The public relations practitioner needs to know how to prepare media kits; to work…

  3. Bi-isotropic constitutive relations

    NASA Astrophysics Data System (ADS)

    Sihvola, A. H.; Lindell, I. V.

    1991-03-01

    The constitutive relations of general bi-isotropic media, requiring four material parameters, can be written in different ways to describe their electromagnetic behavior. This communication contains a two-way 'dictionary' between a proposed formulation of the constitutive relations with three other sets of relations, generalized from relations used for chiral materials.

  4. Public Relations and Interpersonal Communication.

    ERIC Educational Resources Information Center

    Lance, Elizabeth P.

    Despite a lack of consensus on theoretical perspectives on public relations and variations in the ways it and interpersonal communication are defined, public relations may be related to interpersonal communication in three ways: (1) it is two-way communication, (2) it is personal, and (3) it is relational. Even in activities having the highest…

  5. Locality and the relativity principle beyond special relativity

    SciTech Connect

    Carmona, J. M.; Cortes, J. L.; Mazon, D.; Mercati, F.

    2011-10-15

    Locality of interactions is an essential ingredient of Special Relativity. Recently, a new framework under the name of relative locality [G. Amelino-Camelia, L. Freidel, J. Kowalski-Glikman, and L. Smolin, arXiv:1101.0931.] has been proposed as a way to consider Planckian modifications of the relativistic dynamics of particles. We note in this paper that the loss of absolute locality is a general feature of theories beyond Special Relativity with an implementation of a relativity principle. We give an explicit construction of such an implementation and compare it both with the previously mentioned framework of relative locality and the so-called Doubly Special Relativity theories.

  6. Cross-Domain Analogies as Relating Derived Relations among Two Separate Relational Networks

    ERIC Educational Resources Information Center

    Ruiz, Francisco J.; Luciano, Carmen

    2011-01-01

    Contemporary behavior analytic research is making headway in analyzing analogy as the establishment of a relation of coordination among common types of trained or derived relations. Previous studies have been focused on within-domain analogy. The current study expands previous research by analyzing cross-domain analogy as relating relations among…

  7. A Relational Algebra Query Language for Programming Relational Databases

    ERIC Educational Resources Information Center

    McMaster, Kirby; Sambasivam, Samuel; Anderson, Nicole

    2011-01-01

    In this paper, we describe a Relational Algebra Query Language (RAQL) and Relational Algebra Query (RAQ) software product we have developed that allows database instructors to teach relational algebra through programming. Instead of defining query operations using mathematical notation (the approach commonly taken in database textbooks), students…

  8. Projective relativity, cosmology and gravitation

    SciTech Connect

    Arcidiacono, G.

    1986-01-01

    This book describes the latest applications of projective geometry to cosmology and gravitation. The contents of the book are; the Poincare group and Special Relativity, the thermodynamics and electromagnetism, general relativity, gravitation and cosmology, group theory and models of universe, the special projective relativity, the Fantappie group and Big-Bang cosmology, a new cosmological projective mechanics, the plasma physics and cosmology, the projective magnetohydrodynamics field, projective relativity and waves propagation, the generalizations of the gravitational field, the general projective relativity, the projective gravitational field, the De Sitter Universe and quantum physics, the conformal relativity and Newton gravitation.

  9. Arbitrarily Applicable Comparative Relations: Experimental Evidence for a Relational Operant

    PubMed Central

    Berens, Nicholas M; Hayes, Steven C

    2007-01-01

    Arbitrarily applicable derived relational responding has been argued by relational frame theorists to be a form of operant behavior. The present study examined this idea with 4 female participants, ages 4 to 5 years old, who could not perform a series of problem-solving tasks involving arbitrary more than and less than relations. In a combined multiple baseline (across responses and participants) and multiple probe design (with trained and untrained stimuli), it was shown that reinforced multiple-exemplar training facilitated the development of arbitrary comparative relations, and that these skills generalized not just across stimuli but also across trial types. The sequence of training identified potential prerequisites in the development of comparative relations (e.g., nonarbitrary comparative relations). Taken as a whole, the present data, along with previous work by others in this area, suggest that relating arbitrary events comparatively is an operant. The implications of this conclusion for the analysis of complex behavior are discussed. PMID:17471793

  10. Questions, Relatives, and Minimal Projection.

    ERIC Educational Resources Information Center

    Demuth, Katherine

    1995-01-01

    This article examines the acquisition of wh-questions and relative clauses in Sesotho, a language with no wh-movement in either questions or relatives, and in which wh-questions must be clefted. (10 references) (JL)

  11. Contemporary Developments in Employee Relations.

    ERIC Educational Resources Information Center

    Marchington, Mick; And Others

    1986-01-01

    Consists of seven articles describing the newest developments in employee relations. Topics include (1) research at two centers studying employee relations, (2) comparisons between United States and United Kingdom systems, (3) unions, (4) displacement, and (5) forms of remuneration. (CH)

  12. Age-related hearing loss

    MedlinePlus

    ... grow older. Your genes and loud noise (from rock concerts or music headphones) may play a large role. The following factors contribute to age-related hearing loss: Family history (age-related hearing loss tends to run in ...

  13. Dissipation, interaction, and relative entropy.

    PubMed

    Gaveau, B; Granger, L; Moreau, M; Schulman, L S

    2014-03-01

    Many thermodynamic relations involve inequalities, with equality if a process does not involve dissipation. In this article we provide equalities in which the dissipative contribution is shown to involve the relative entropy (also called the Kullback-Leibler divergence). The processes considered are general time evolutions in both classical and quantum mechanics, and the initial state is sometimes thermal, sometimes partially so. As an application, the relative entropy is related to transport coefficients.

  14. The Relative Importance of Health

    ERIC Educational Resources Information Center

    Hsieh, Chang-Ming

    2008-01-01

    This article seeks to extend Michalos' [Social indicators research and health-related quality of life (QoL) research. "Social Indicators Research," 65, 27-72, 2004] discussion on bridging social indicators research and health-related QoL (HRQoL) research through an examination of (1) the relative importance of satisfaction with one's own health to…

  15. Relative Clauses in Classical Nahuatl

    ERIC Educational Resources Information Center

    Langacker, Ronald W.

    1975-01-01

    Jane Rosenthal's paper on relative clauses in Classical Nahuatl is discussed, and it is argued that she misses an important generalization. An alternative analysis to a class of relative pronouns and new rules for the distribution of relative pronouns are proposed. (SC)

  16. A Relational Theory of Working

    ERIC Educational Resources Information Center

    Blustein, David L.

    2011-01-01

    Building on diverse influences from critical perspectives in vocational psychology and the relational movement in contemporary psychological discourse, this article introduces the relational theory of working. Attending to the full array of people who work and who want to work, the relational theory conceptualizes working as an inherently…

  17. Bayesian Analogy with Relational Transformations

    ERIC Educational Resources Information Center

    Lu, Hongjing; Chen, Dawn; Holyoak, Keith J.

    2012-01-01

    How can humans acquire relational representations that enable analogical inference and other forms of high-level reasoning? Using comparative relations as a model domain, we explore the possibility that bottom-up learning mechanisms applied to objects coded as feature vectors can yield representations of relations sufficient to solve analogy…

  18. A Relational Theory of Working

    ERIC Educational Resources Information Center

    Blustein, David L.

    2011-01-01

    Building on diverse influences from critical perspectives in vocational psychology and the relational movement in contemporary psychological discourse, this article introduces the relational theory of working. Attending to the full array of people who work and who want to work, the relational theory conceptualizes working as an inherently…

  19. Pennsylvania Public Employe Labor Relations.

    ERIC Educational Resources Information Center

    Thrush, John D.

    This volume is intended to help public administrators and attorneys deal with the legal problems in Pennsylvania public sector labor relations. In it, the Pennsylvania Labor Relations Board is discussed and public sector labor relations court decisions are cited. The volume is intended to be a reference book and to reveal inconsistencies in…

  20. Fluctuation Relations for Molecular Motors

    NASA Astrophysics Data System (ADS)

    Lacoste, David; Mallick, Kirone

    This review is focused on the application of specific fluctuation relations, such as the Gallavotti-Cohen relation, to ratchet models of a molecular motor. A special emphasis is placed on two-state models such as the flashing ratchet model. We derive the Gallavotti-Cohen fluctuation relation for these models and we discuss some of its implications.

  1. Bayesian Analogy with Relational Transformations

    ERIC Educational Resources Information Center

    Lu, Hongjing; Chen, Dawn; Holyoak, Keith J.

    2012-01-01

    How can humans acquire relational representations that enable analogical inference and other forms of high-level reasoning? Using comparative relations as a model domain, we explore the possibility that bottom-up learning mechanisms applied to objects coded as feature vectors can yield representations of relations sufficient to solve analogy…

  2. Introducing Relativity into Quantum Chemistry

    ERIC Educational Resources Information Center

    Li, Wai-Kee; Blinder, S. M.

    2011-01-01

    It is not often realized by chemists that the special theory of relativity is behind several aspects of quantum chemistry. The Schrdinger equation itself is based on relations between space-time and energy-momentum four vectors. Electron spin is, of course, the most obvious manifestation of relativity. The chemistry of some heavy elements is…

  3. Introducing Relativity into Quantum Chemistry

    ERIC Educational Resources Information Center

    Li, Wai-Kee; Blinder, S. M.

    2011-01-01

    It is not often realized by chemists that the special theory of relativity is behind several aspects of quantum chemistry. The Schrdinger equation itself is based on relations between space-time and energy-momentum four vectors. Electron spin is, of course, the most obvious manifestation of relativity. The chemistry of some heavy elements is…

  4. Breaking Public Relations' Glass Ceiling.

    ERIC Educational Resources Information Center

    Dozier, David M.

    1988-01-01

    Suggests that public relations practitioners, especially women practitioners, ought to incorporate program research into daily practice. Considers the shift in public relations from a male-majority to female-majority and the challenges which this shift poses for all public relations practitioners and educators. (MS)

  5. The Relative Importance of Health

    ERIC Educational Resources Information Center

    Hsieh, Chang-Ming

    2008-01-01

    This article seeks to extend Michalos' [Social indicators research and health-related quality of life (QoL) research. "Social Indicators Research," 65, 27-72, 2004] discussion on bridging social indicators research and health-related QoL (HRQoL) research through an examination of (1) the relative importance of satisfaction with one's own health to…

  6. Sharing AIS Related Anomalies (SARA)

    DTIC Science & Technology

    2016-03-01

    related anomalies they uncover. This document proposes a taxonomy and a representation of the metadata and information ele- ments of the AIS-related...13 2.4 Potential Collaborators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3 Taxonomy of AIS...related Anomaly Types 15 3.1 AIS Anomalies Levels 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Taxonomy

  7. Relative Clauses in Classical Nahuatl

    ERIC Educational Resources Information Center

    Langacker, Ronald W.

    1975-01-01

    Jane Rosenthal's paper on relative clauses in Classical Nahuatl is discussed, and it is argued that she misses an important generalization. An alternative analysis to a class of relative pronouns and new rules for the distribution of relative pronouns are proposed. (SC)

  8. De Sitter Invariant Special Relativity

    NASA Astrophysics Data System (ADS)

    Yan, Mu-Lin

    2015-06-01

    Einstein's Special Relativity is one of the cornerstones of modern physics. There is one universal parameter c (i.e., speed of light) in the Einstein's Special Relativity (E-SR), which serves as the maximal velocity of physics. One might be curious about whether there is another universal parameter R that serves as the maximal length in physics besides the universal maximal velocity limit c. The answer is yes. This book intends to describe a special theory of relativity with two universal parameters c and R. Such a theory is called the de Sitter Invariant Special Relativity, or the Special Relativity with Cosmology Constant...

  9. Note on new KLT relations

    NASA Astrophysics Data System (ADS)

    Feng, Bo; He, Song; Huang, Rijun; Jia, Yin

    2010-10-01

    In this short note, we present two results about KLT relations discussed in recent several papers. Our first result is the re-derivation of Mason-Skinner MHV amplitude by applying the S n-3 permutation symmetric KLT relations directly to MHV amplitude. Our second result is the equivalence proof of the newly discovered S n-2 permutation symmetric KLT relations and the well-known S n-3 permutation symmetric KLT relations. Although both formulas have been shown to be correct by BCFW recursion relations, our result is the first direct check using the regularized definition of the new formula.

  10. Towards a relational health promotion.

    PubMed

    Veenstra, Gerry; Burnett, Patrick John

    2016-03-01

    The Ottawa Charter for Health Promotion exhibits a substantialist approach to the agency-structure dichotomy. From a substantialist point of view, both individual agency and social structure come preformed and subsequently relate to and influence one another, starkly positioning the choices made by individuals against the structured sets of opportunities and constraints in reference to which choices are made. From a relational perspective, however, relations between elements, not the elements themselves, are the primary ontological focus. We advocate for a relational approach to the structure-agency dichotomy, one that locates both agency and structure in social relations and thereby dissolves the stark distinction between them, suggesting that relational theories can provide useful insights into how and why people 'choose' to engage in health-related behaviours. Pierre Bourdieu's theory of practice, predicated upon the notions of field, capital and habitus, is exemplary in this regard.

  11. Producing and Recognizing Analogical Relations

    PubMed Central

    Lipkens, Regina; Hayes, Steven C

    2009-01-01

    Analogical reasoning is an important component of intelligent behavior, and a key test of any approach to human language and cognition. Only a limited amount of empirical work has been conducted from a behavior analytic point of view, most of that within Relational Frame Theory (RFT), which views analogy as a matter of deriving relations among relations. The present series of four studies expands previous work by exploring the applicability of this model of analogy to topography-based rather than merely selection-based responses and by extending the work into additional relations, including nonsymmetrical ones. In each of the four studies participants pretrained in contextual control over nonarbitrary stimulus relations of sameness and opposition, or of sameness, smaller than, and larger than, learned arbitrary stimulus relations in the presence of these relational cues and derived analogies involving directly trained relations and derived relations of mutual and combinatorial entailment, measured using a variety of productive and selection-based measures. In Experiment 1 participants successfully recognized analogies among stimulus networks containing same and opposite relations; in Experiment 2 analogy was successfully used to extend derived relations to pairs of novel stimuli; in Experiment 3 the procedure used in Experiment 1 was extended to nonsymmetrical comparative relations; in Experiment 4 the procedure used in Experiment 2 was extended to nonsymmetrical comparative relations. Although not every participant showed the effects predicted, overall the procedures occasioned relational responses consistent with an RFT account that have not yet been demonstrated in a behavior-analytic laboratory setting, including productive responding on the basis of analogies. PMID:19230515

  12. Sujata Relativity: Complete Relativity from Gravity to Quantum-Gravity

    NASA Astrophysics Data System (ADS)

    Sinha, Nilotpal

    2009-01-01

    Here, we describe gravity as a universal deformation of Minkowski metric depending on a "double-fold" complex number for fourth coordinate within a (3 + 1)D-space. A unification of Special Relativity and General Relativity, induced by Lorentz transformation, gives a Quantum-Gravity Wave Equation, much like as Wheeler-DeWitt equation, without considering Canonical or, Covariant Quantum Relativity. A complete and well-grown ("Sujata") Quantum-Gravity picture satisfies the Quantum Gravitational Field Equation.

  13. The principle of relativity and the de Broglie relation

    NASA Astrophysics Data System (ADS)

    Güémez, Julio; Fiolhais, Manuel; Fernández, Luis A.

    2016-06-01

    The de Broglie relation is revisited in connection with an ab initio relativistic description of particles and waves, which is the same treatment that historically led to this famous relation. In the same context of the Minkowski four-vector formalism, we also discuss the phase and the group velocity of a matter wave, explicitly showing that both transform as ordinary velocities under a Lorentz transformation. We show that such a transformation rule is a necessary condition for the covariance of the de Broglie relation, and stress the pedagogical value of the Einstein-Minkowski-Lorentz relativistic context in the presentation of the de Broglie relation.

  14. Relational thinking and relational reasoning: harnessing the power of patterning

    NASA Astrophysics Data System (ADS)

    Alexander, Patricia A.

    2016-05-01

    This article offers an overview of the nature and role of relational thinking and relational reasoning in human learning and performance, both of which pertain to the discernment of meaningful patterns within any informational stream. Distinctions between thinking and reasoning relationally are summarized, along with specific forms of patterning that might be discerned. Next, the article summarizes what is presently known about relational reasoning, and then moves to explore future directions in educational research and in instructional practice that warrant attention based on the empirical literature.

  15. Relating Derived Relations as a Model of Analogical Reasoning: Reaction Times and Event-Related Potentials

    ERIC Educational Resources Information Center

    Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M.; Whelan, Robert; Dymond, Simon

    2005-01-01

    The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as…

  16. Relating Derived Relations as a Model of Analogical Reasoning: Reaction Times and Event-Related Potentials

    ERIC Educational Resources Information Center

    Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M.; Whelan, Robert; Dymond, Simon

    2005-01-01

    The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as…

  17. Neurocognitive development of relational reasoning

    PubMed Central

    Crone, Eveline A.; Wendelken, Carter; van Leijenhorst, Linda; Honomichl, Ryan D.; Christoff, Kalina; Bunge, Silvia A.

    2008-01-01

    Relational reasoning is an essential component of fluid intelligence, and is known to have a protracted developmental trajectory. To date, little is known about the neural changes that underlie improvements in reasoning ability over development. In this event-related functional magnetic resonance imaging (fMRI) study, children aged 8-12 and adults aged 18-25 performed a relational reasoning task adapted from Raven’s Progressive Matrices. The task included three levels of relational reasoning demands: REL-0, REL-1, and REL-2. Children exhibited disproportionately lower accuracy than adults on trials that required integration of two relations (REL-2). Like adults, children engaged lateral prefrontal cortex (PFC) and parietal cortex during task performance; however, they exhibited different timecourses and activation profiles, providing insight into their approach to the problems. As in prior studies, adults exhibited increased rostrolateral PFC (RLPFC) activation when relational integration was required (REL-2 > REL-1, REL-0). Children also engaged RLPFC most strongly for REL-2 problems at early stages of processing, but this differential activation relative to REL-1 trials was not sustained throughout the trial. These results suggest that the children recruited RLPFC while processing relations, but failed to use it to integrate across two relations. Relational integration is critical for solving a variety of problems, and for appreciating analogies; the current findings suggest that developmental improvements in this function rely on changes in the profile of engagement of RLPFC, as well as dorsolateral PFC and parietal cortex. PMID:19120413

  18. Relation between moisture content of fine fuels and relative humidity.

    Treesearch

    Harold K. Steen

    1963-01-01

    Measurements indicate a relation between diurnal curves of relative humidity and moisture content of some important fuels of Oregon and Washington. Some of these measurements were made in early years of forest fire research in this region. The data in this note were collected at intervals throughout 4 days (in September 1938) at the Wind River Experimental Forest near...

  19. Special Relativity in Week One: 1) The Principle of Relativity

    ERIC Educational Resources Information Center

    Huggins, Elisha

    2011-01-01

    We like to begin an introductory physics course with a law of physics that applies to everything, has no known exceptions, and whose consequences are already familiar to students. That law is the principle of relativity. By focusing on the principle of relativity itself, and a careful selection of the thought experiments, we can comfortably…

  20. Special Relativity in Week One: 1) The Principle of Relativity

    ERIC Educational Resources Information Center

    Huggins, Elisha

    2011-01-01

    We like to begin an introductory physics course with a law of physics that applies to everything, has no known exceptions, and whose consequences are already familiar to students. That law is the principle of relativity. By focusing on the principle of relativity itself, and a careful selection of the thought experiments, we can comfortably…

  1. Reformulating the Quantum Uncertainty Relation.

    PubMed

    Li, Jun-Li; Qiao, Cong-Feng

    2015-08-03

    Uncertainty principle is one of the cornerstones of quantum theory. In the literature, there are two types of uncertainty relations, the operator form concerning the variances of physical observables and the entropy form related to entropic quantities. Both these forms are inequalities involving pairwise observables, and are found to be nontrivial to incorporate multiple observables. In this work we introduce a new form of uncertainty relation which may give out complete trade-off relations for variances of observables in pure and mixed quantum systems. Unlike the prevailing uncertainty relations, which are either quantum state dependent or not directly measurable, our bounds for variances of observables are quantum state independent and immune from the "triviality" problem of having zero expectation values. Furthermore, the new uncertainty relation may provide a geometric explanation for the reason why there are limitations on the simultaneous determination of different observables in N-dimensional Hilbert space.

  2. Classification of Health Related Applications.

    PubMed

    Höhn, Matthias; von Jan, Ute; Framke, Theodor; Albrecht, Urs-Vito

    2016-01-01

    Although there is a large number of health related apps available in the stores of the major mobile platforms, the stores do not really offer clear definitions of what health related apps are and how they can be categorized. A similar picture is found in literature. Here, many proposals covering different app related aspects have been published, but often, these only cover a narrow field. There is no common terminology describing what health apps are and neither is there a common classification. In order to alleviate the situation, we developed a proposal for categorization that can be used as a basis for discussing aspects related to health applications and for describing the unclear situation on the market. In this paper, the function related aspects are covered, although the scheme itself covers many other aspects related to users of health apps, technical aspects and so on. This initial classification was applied to a sample of health apps available for iOS and Android.

  3. Relational citizenship: supporting embodied selfhood and relationality in dementia care.

    PubMed

    Kontos, Pia; Miller, Karen-Lee; Kontos, Alexis P

    2017-02-01

    We draw on findings from a mixed-method study of specialised red-nosed elder-clowns in a long-term care facility to advance a model of 'relational citizenship' for individuals with dementia. Relational citizenship foregrounds the reciprocal nature of engagement and the centrality of capacities, senses, and experiences of bodies to the exercise of human agency and interconnectedness. We critically examine elder-clown strategies and techniques to illustrate how relational citizenship can be supported and undermined at the micro level of direct care through a focus on embodied expressions of creativity and sexuality. We identify links between aesthetic enrichment and relational practices in art, music and imagination. Relational citizenship offers an important rethinking of notions of selfhood, entitlement, and reciprocity that are central to a sociology of dementia, and it also provides new ethical grounds to explore how residents' creative and sexual expression can be cultivated in the context of long-term care.

  4. Thermodynamic and relativistic uncertainty relations

    NASA Astrophysics Data System (ADS)

    Artamonov, A. A.; Plotnikov, E. M.

    2017-01-01

    Thermodynamic uncertainty relation (UR) was verified experimentally. The experiments have shown the validity of the quantum analogue of the zeroth law of stochastic thermodynamics in the form of the saturated Schrödinger UR. We have also proposed a new type of UR for the relativistic mechanics. These relations allow us to consider macroscopic phenomena within the limits of the ratio of the uncertainty relations for different physical quantities.

  5. Saccadic eye movement related potentials.

    PubMed

    Jagla, F; Jergelová, M; Riecanský, I

    2007-01-01

    The saccadic eye movement related potentials (SEMRPs) enable to study brain mechanisms of the sensorimotor integration. SEMRPs provide insight into various cognitive mechanisms related to planning, programming, generation and execution of the saccadic eye movements. SEMRPs can be used to investigate pathophysiological mechanisms of several disorders of the central nervous system. Here we shortly summarize basic findings concerning the significance of SEMRP components, their relationship to the functional brain asymmetry and visual attention level as well as changes related to certain neuropsychological disorders.

  6. Pauli effects in uncertainty relations

    NASA Astrophysics Data System (ADS)

    Toranzo, I. V.; Sánchez-Moreno, P.; Esquivel, R. O.; Dehesa, J. S.

    2014-10-01

    In this Letter we analyze the effect of the spin dimensionality of a physical system in two mathematical formulations of the uncertainty principle: a generalized Heisenberg uncertainty relation valid for all antisymmetric N-fermion wavefunctions, and the Fisher-information-based uncertainty relation valid for all antisymmetric N-fermion wavefunctions of central potentials. The accuracy of these spin-modified uncertainty relations is examined for all atoms from Hydrogen to Lawrencium in a self-consistent framework.

  7. AGE-RELATED MACULAR DEGENERATION.

    PubMed

    Gheorghe, Andreea; Mahdi, Labib; Musat, Ovidiu

    2015-01-01

    The objective of our study was to review the current knowledge on Age- Related Macular Degeneration, including pathogenesis, ocular manifestations, diagnosis and ancillary testing. Relevant publications on Age-Related Macular Degeneration that were published until 2014. Age-related macular degeneration (AMD) is a common macular disease affecting elderly people in the Western world. It is characterized by the appearance of drusen in the macula, accompanied by choroidal neovascularization (CNV) or geographic atrophy.

  8. Crystal Microbalance Monitors Relative Humidity

    NASA Technical Reports Server (NTRS)

    Yang, L. C.

    1984-01-01

    Sensor monitors water evaporation in industrial drying processes. Measured adsorption isotherm for instrument essentially linear over entire range of relative humidity. Testing at each temperature setting less than half hour for full relative-humidity range, with estimated frequency response time less than 10 seconds. Used to measure relative humidity of ambient atmosphere near drying paper, food textile fabrics and pulp to optimize water-drying portion of processing cycle.

  9. Other Resources Related to SAM

    EPA Pesticide Factsheets

    Learn more about websites and information related to EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM), including key EPA collaborators, laboratories, and research centers.

  10. Geometry of physical dispersion relations

    NASA Astrophysics Data System (ADS)

    Rätzel, Dennis; Rivera, Sergio; Schuller, Frederic P.

    2011-02-01

    To serve as a dispersion relation, a cotangent bundle function must satisfy three simple algebraic properties. These conditions are derived from the inescapable physical requirements that local matter field dynamics must be predictive and allow for an observer-independent notion of positive energy. Possible modifications of the standard relativistic dispersion relation are thereby severely restricted. For instance, the dispersion relations associated with popular deformations of Maxwell theory by Gambini-Pullin or Myers-Pospelov are not admissible. Dispersion relations passing the simple algebraic checks derived here correspond to physically admissible Finslerian refinements of Lorentzian geometry.

  11. Remarks on turbulent constitutive relations

    NASA Technical Reports Server (NTRS)

    Shih, Tsan-Hsing; Lumley, John L.

    1993-01-01

    The paper demonstrates that the concept of turbulent constitutive relations can be used to construct general models for various turbulent correlations. Some of the Generalized Cayley-Hamilton formulas for relating tensor products of higher extension to tensor products of lower extension are introduced. The combination of dimensional analysis and invariant theory can lead to 'turbulent constitutive relations' (or general turbulence models) for, in principle, any turbulent correlations. As examples, the constitutive relations for Reynolds stresses and scalar fluxes are derived. The results are consistent with ones from Renormalization Group (RNG) theory and two-scale Direct-Interaction Approximation (DIA) method, but with a more general form.

  12. Cross-Domain Analogies as Relating Derived Relations among Two Separate Relational Networks

    PubMed Central

    Ruiz, Francisco J; Luciano, Carmen

    2011-01-01

    Contemporary behavior analytic research is making headway in analyzing analogy as the establishment of a relation of coordination among common types of trained or derived relations. Previous studies have been focused on within-domain analogy. The current study expands previous research by analyzing cross-domain analogy as relating relations among separate relational networks and by correlating participants' performance with a standard measure of analogical reasoning. In two experiments, adult participants first completed general intelligence and analogical reasoning tests. Subsequently, they were exposed to a computerized conditional discrimination training procedure designed to create two relational networks, each consisting of two 3-member equivalence classes. The critical test was a two-part analogical test in which participants had to relate combinatorial relations of coordination and distinction between the two relational networks. In Experiment 1, combinatorial relations for each network were individually tested prior to analogical testing, but in Experiment 2 they were not. Across both experiments, 65% of participants passed the analogical test on the first attempt. Moreover, results from the training procedure were strongly correlated with the standard measure of analogical reasoning. PMID:21547072

  13. Cross-domain analogies as relating derived relations among two separate relational networks.

    PubMed

    Ruiz, Francisco J; Luciano, Carmen

    2011-05-01

    Contemporary behavior analytic research is making headway in analyzing analogy as the establishment of a relation of coordination among common types of trained or derived relations. Previous studies have been focused on within-domain analogy. The current study expands previous research by analyzing cross-domain analogy as relating relations among separate relational networks and by correlating participants' performance with a standard measure of analogical reasoning. In two experiments, adult participants first completed general intelligence and analogical reasoning tests. Subsequently, they were exposed to a computerized conditional discrimination training procedure designed to create two relational networks, each consisting of two 3-member equivalence classes. The critical test was a two-part analogical test in which participants had to relate combinatorial relations of coordination and distinction between the two relational networks. In Experiment 1, combinatorial relations for each network were individually tested prior to analogical testing, but in Experiment 2 they were not. Across both experiments, 65% of participants passed the analogical test on the first attempt. Moreover, results from the training procedure were strongly correlated with the standard measure of analogical reasoning.

  14. Making Probabilistic Relational Categories Learnable

    ERIC Educational Resources Information Center

    Jung, Wookyoung; Hummel, John E.

    2015-01-01

    Theories of relational concept acquisition (e.g., schema induction) based on structured intersection discovery predict that relational concepts with a probabilistic (i.e., family resemblance) structure ought to be extremely difficult to learn. We report four experiments testing this prediction by investigating conditions hypothesized to facilitate…

  15. Representation of Fuzzy Symmetric Relations

    DTIC Science & Technology

    1986-03-19

    Std Z39-18 REPRESENTATION OF FUZZY SYMMETRIC RELATIONS L. Valverde Dept. de Matematiques i Estadistica Universitat Politecnica de Catalunya Avda...REPRESENTATION OF FUZZY SYMMETRIC RELATIONS L. "Valverde* Dept. de Matematiques i Estadistica Universitat Politecnica de Catalunya Avda. Diagonal, 649

  16. Neurocognitive Development of Relational Reasoning

    ERIC Educational Resources Information Center

    Crone, Eveline A.; Wendelken, Carter; van Leijenhorst, Linda; Honomichl, Ryan D.; Christoff, Kalina; Bunge, Silvia A.

    2009-01-01

    Relational reasoning is an essential component of fluid intelligence, and is known to have a protracted developmental trajectory. To date, little is known about the neural changes that underlie improvements in reasoning ability over development. In this event-related functional magnetic resonance imaging (fMRI) study, children aged 8-12 and adults…

  17. Public Relations for Special Education.

    ERIC Educational Resources Information Center

    Steinke, Gary L.; Steinke, Roberta J.

    This paper offers suggestions to help special educators and administrators effectively and thoroughly tell people about their school's programs and events dealing with special education. General suggestions include appointing a public relations coordinator, having school personnel complete a Public Relations Help Request Form when publicizing…

  18. Job Corps Intergroup Relations Program.

    ERIC Educational Resources Information Center

    Job Corps (DOL), Washington, DC.

    The Job Corps Intergroup Relations Program provides an integrated curriculum involving orientation, residential living, education, and vocational training. These instructional materials for the program provide guidelines and materials emphasizing ethnic contributions in order to improve human relations among ethnic groups and between women and…

  19. Somatic Symptom and Related Disorders

    MedlinePlus

    ... and symptoms a person feels are related to psychological factors. These symptoms can’t be traced to a specific physical cause. In people who have a somatic symptom and related disorder, medical test results are either normal or don’t explain ...

  20. Teaching Special Relativity without Calculus

    ERIC Educational Resources Information Center

    Ruby, Lawrence

    2009-01-01

    In 2007 many AAPT members received a booklet that is the first chapter of a physics textbook available on a CD. This book espouses the new educational philosophy of teaching special relativity as the first item in the topic of mechanics. Traditionally, special relativity is part of one or more modern physics chapters at the end of the text, and…

  1. Teaching Special Relativity without Calculus

    ERIC Educational Resources Information Center

    Ruby, Lawrence

    2009-01-01

    In 2007 many AAPT members received a booklet that is the first chapter of a physics textbook available on a CD. This book espouses the new educational philosophy of teaching special relativity as the first item in the topic of mechanics. Traditionally, special relativity is part of one or more modern physics chapters at the end of the text, and…

  2. Internationalizing the Public Relations Curriculum.

    ERIC Educational Resources Information Center

    Taylor, Maureen

    2001-01-01

    Discusses broadening public relations to an international level by incorporating the topics of culture, international practices, and culturally sensitive theory development. Discusses rationale, design, and execution of an undergraduate course in international public relations. Suggests ways to incorporate assignments addressing international…

  3. Internationalizing the Public Relations Curriculum.

    ERIC Educational Resources Information Center

    Taylor, Maureen

    2001-01-01

    Discusses broadening public relations to an international level by incorporating the topics of culture, international practices, and culturally sensitive theory development. Discusses rationale, design, and execution of an undergraduate course in international public relations. Suggests ways to incorporate assignments addressing international…

  4. Training Guidelines for Employee Relations.

    ERIC Educational Resources Information Center

    Hotel and Catering Training Board, Wembley (England).

    This set of guidelines is intended for use by employers desiring to establish the training needs of those involved in employee relations. The 16 guidelines cover the following principal activities normally associated with employee relations: staff management policy and aims, staff recruitment and selection, terms and conditions of employment,…

  5. Relational Thesauri in Information Retrieval.

    ERIC Educational Resources Information Center

    Wang, Yih-Chen; Vandendorpe, James

    1985-01-01

    Describes design and development of a thesaurus based on lexical-semantic relations, and compares results of experiments with queries enhanced using thesauri based on several different groups of relations against performance with original queries run on IRS information retrieval system developed at Illinois Institute of Technology. Twenty-one…

  6. Public Relations: A Professional Responsibility

    ERIC Educational Resources Information Center

    Fox, Carol Lynne

    1971-01-01

    A public relations program for guidance services must be honest, continuous, positive, comprehensive, sensitive to the public's concern, and presented in nontechnical terms. A counselor has professional responsibility to convey his competencies and character of guidance services to the public through a public relations role. The school counselor…

  7. Learning Resources for Public Relations.

    ERIC Educational Resources Information Center

    Nadler, Marjorie Keeshan

    With the increased interest in public relations education, it is important for educators to be aware of options available for enhancing the effectiveness of teaching in this area. A number of nonprint learning resources are available, including internships, in-class campaigns, and national competitions. Public relations internships are essentially…

  8. Simulation in International Relations Education.

    ERIC Educational Resources Information Center

    Starkey, Brigid A.; Blake, Elizabeth L.

    2001-01-01

    Discusses the educational implications of simulations in international relations. Highlights include the development of international relations simulations; the role of technology; the International Communication and Negotiation Simulations (ICONS) project at the University of Maryland; evolving information technology; and simulating real-world…

  9. Media Relations: The Planned Event.

    ERIC Educational Resources Information Center

    Larson, Mark A.

    Intended for use by instructors of public relations courses, this paper discusses teaching methods that can be used to demonstrate to students how much of the news involves events that are carefully planned by public relations practitioners and some of the techniques the practitioners use to create these events. The paper describes in detail…

  10. Two Courses in Public Relations.

    ERIC Educational Resources Information Center

    Phifer, Gregg; Gee, Gerry

    At Florida State University in Tallahassee, 30 students a year are enrolled in the public relations major, beginning with the junior year, so that at any one time there are approximately 60 majors, all of whom have at least a B average. The basic course--PUR 3000, Introduction to Public Relations--enrolls over 150 students a semester in two…

  11. Neurocognitive Development of Relational Reasoning

    ERIC Educational Resources Information Center

    Crone, Eveline A.; Wendelken, Carter; van Leijenhorst, Linda; Honomichl, Ryan D.; Christoff, Kalina; Bunge, Silvia A.

    2009-01-01

    Relational reasoning is an essential component of fluid intelligence, and is known to have a protracted developmental trajectory. To date, little is known about the neural changes that underlie improvements in reasoning ability over development. In this event-related functional magnetic resonance imaging (fMRI) study, children aged 8-12 and adults…

  12. Building a Public Relations Program.

    ERIC Educational Resources Information Center

    Swedmark, Donald C.

    1980-01-01

    The concept of public relations and its importance in a vocational education program are described in this article. Such program elements as research, planning, finance, administration, and evaluation are discussed. Public relations efforts concerning staff members, administration, students and alumni, parents, organizations and agencies,…

  13. Entropic error-disturbance relations

    NASA Astrophysics Data System (ADS)

    Coles, Patrick; Furrer, Fabian

    2014-03-01

    We derive an entropic error-disturbance relation for a sequential measurement scenario as originally considered by Heisenberg, and we discuss how our relation could be tested using existing experimental setups. Our relation is valid for discrete observables, such as spin, as well as continuous observables, such as position and momentum. The novel aspect of our relation compared to earlier versions is its clear operational interpretation and the quantification of error and disturbance using entropic quantities. This directly relates the measurement uncertainty, a fundamental property of quantum mechanics, to information theoretical limitations and offers potential applications in for instance quantum cryptography. PC is funded by National Research Foundation Singapore and Ministry of Education Tier 3 Grant ``Random numbers from quantum processes'' (MOE2012-T3-1-009). FF is funded by Japan Society for the Promotion of Science, KAKENHI grant No. 24-02793.

  14. Equivalence theorem of uncertainty relations

    NASA Astrophysics Data System (ADS)

    Li, Jun-Li; Qiao, Cong-Feng

    2017-01-01

    We present an equivalence theorem to unify the two classes of uncertainty relations, i.e. the variance-based ones and the entropic forms, showing that the entropy of an operator in a quantum system can be built from the variances of a set of commutative operators. This means that an uncertainty relation in the language of entropy may be mapped onto a variance-based one, and vice versa. Employing the equivalence theorem, alternative formulations of entropic uncertainty relations are obtained for the qubit system that are stronger than the existing ones in the literature, and variance-based uncertainty relations for spin systems are reached from the corresponding entropic uncertainty relations.

  15. Quantum uncertainty relation using coherence

    NASA Astrophysics Data System (ADS)

    Yuan, Xiao; Bai, Ge; Peng, Tianyi; Ma, Xiongfeng

    2017-09-01

    Measurement outcomes of a quantum state can be genuinely random (unpredictable) according to the basic laws of quantum mechanics. The Heisenberg-Robertson uncertainty relation puts constraints on the accuracy of two noncommuting observables. The existing uncertainty relations adopt variance or entropic measures, which are functions of observed outcome distributions, to quantify the uncertainty. According to recent studies of quantum coherence, such uncertainty measures contain both classical (predictable) and quantum (unpredictable) components. In order to extract out the quantum effects, we define quantum uncertainty to be the coherence of the state on the measurement basis. We discover a quantum uncertainty relation using coherence between two measurement noncommuting bases. Furthermore, we analytically derive the quantum uncertainty relation for the qubit case with three widely adopted coherence measures, the relative entropy of coherence, the coherence of formation, and the l1 norm of coherence.

  16. Attentional functioning and relational learning.

    PubMed

    Soraci, S A; Deckner, C W; Baumeister, A A; Carlin, M T

    1990-11-01

    Stimulus properties such as similarity-dissimilarity and novelty-familiarity are inherently relational and are embedded in ubiquitous stimulus contexts. Children with mental retardation and young children without mental retardation are particularly prone to failure on relational tasks such as oddity and match-to-sample (Greenfield, 1985; Soraci et al., in press). Converging evidence from a number of studies suggest that a critical factor in the performance discrepancies between these and other children is a differential sensitivity to relational information. In these studies relational characteristics of stimulus arrays were enhanced in order to facilitate performances on such relational tasks. Findings indicate the theoretical and practical significance of perceptually based interventions that induce rapid discrimination learning.

  17. Langues et relations economiques (Languages and Economic Relations)

    ERIC Educational Resources Information Center

    Graziosi, Dante

    1975-01-01

    Knowledge of foreign languages is important in facilitating economic and cultural relations between countries. The educational systems of countries should take this pragmatic aspect of foreign language instruction into consideration. (Text is in French.) (TL)

  18. The Principle of Relativity and the Indeterminacy of Special Relativity

    ERIC Educational Resources Information Center

    de Abreu, Rodrigo; Guerra, Vasco

    2008-01-01

    This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial--but,…

  19. The Principle of Relativity and the Indeterminacy of Special Relativity

    ERIC Educational Resources Information Center

    de Abreu, Rodrigo; Guerra, Vasco

    2008-01-01

    This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial--but,…

  20. Learning Statistical Patterns in Relational Data Using Probabilistic Relational Models

    DTIC Science & Technology

    2005-01-01

    involving web data and the other a social network - and evaluating the performance of our methods on these data sets, and dealing with distributions...classification in relational data. 4. Developing and labeling two real-world relational data set — one involving web data and the other a social network...webpages and 110,000 links. We also constructed a second data set based on a real-world social network of Stanford students. For each student, we have a

  1. Event-related Potential Signatures of Relational Memory

    PubMed Central

    Hannula, Deborah E.; Federmeier, Kara D.; Cohen, Neal J.

    2009-01-01

    Various lines of evidence suggest that memory for the relations among arbitrarily paired items acquired prior to testing can influence early processing of a probe stimulus. The event-related potential experiment reported here was designed to explore how early in time memory for a previously established face-scene relationship begins to influence processing of faces, under sequential presentation conditions in which a preview of the scene can promote expectancies about the to-be-presented face. Prior to the current work, the earliest component documented to be sensitive to memory for the relations among arbitrarily paired items was the late positive complex (LPC), but here relational memory effects were evident as early as 270-350 msec after face onset. The latency of these relational memory effects suggests that they may be the precursor to similar effects observed in eye movement behavior. As expected, LPC amplitude was also affected by memory for face-scene relationships, and N400 amplitude reflected some combination of memory for items and memory for the relations among items. PMID:17069477

  2. Variations of relative humidity in relation to meningitis in Africa

    NASA Astrophysics Data System (ADS)

    Seefeldt, M. W.; Hopson, T. M.

    2011-12-01

    The meningitis belt is a region covering Sub-Saharan Africa from the Sahel of West Africa eastward to western Ethiopia. The region is prone to meningitis epidemics during the dry season extending from approximately January to May, depending on the region. Relative humidity has been found to be a critical environmental factor indicating the susceptibility of a region to meningitis epidemics. This study evaluates the variation of relative humidity across West Africa over 30 dry-seasons (1979 - 2009) using the NASA-MERRA dataset. The method of self-organizing maps is employed to characterize the changes in relative humidity patterns across the region within a given dry season as well as changes over the 30 years. A general pattern of changes in relative humidity is indicated as the rainbelt retreats to the south at the onset of the dry season and then returns to the region at the end of the dry season. Within each dry season there is a unique pattern. The climatological conditions of relative humidity at the onset of the dry season provide an indication of the moisture environment for the entire dry season. Year to year variation in the relative humidity patterns are found to be gradual. Future applications involve using the results from the SOM evaluation to be used for future decisions involving prevention of meningitis epidemics.

  3. Do ferrets perceive relative pitch?

    PubMed

    Yin, Pingbo; Fritz, Jonathan B; Shamma, Shihab A

    2010-03-01

    The existence of relative pitch perception in animals is difficult to demonstrate, since unlike humans, animals often attend to absolute rather than relative properties of sound elements. However, the results of the present study show that ferrets can be trained using relative pitch to discriminate two-tone sequences (rising vs. falling). Three ferrets were trained using a positive-reinforcement paradigm in which sequences of reference (one to five repeats) and target stimuli were presented, and animals were rewarded only when responding correctly to the target. The training procedure consisted of three training phases that successively shaped the ferrets to attend to relative pitch. In Phase-1 training, animals learned the basic task with sequences of invariant tone-pairs and could use absolute pitch information. During Phase-2 training, in order to emphasize relative cues, absolute pitch was varied each trial within a two-octave frequency range. In Phase-3 training, absolute pitch cues were removed, and only relative cue information was available to solve the task. Two ferrets successfully completed training on all three phases and achieved significant discriminative performance over the trained four-octave frequency range. These results suggest that ferrets can be trained to discern the relative pitch relationship of a sequence of tone-pairs independent of frequency.

  4. Uncertainty relations for characteristic functions

    NASA Astrophysics Data System (ADS)

    Rudnicki, Łukasz; Tasca, D. S.; Walborn, S. P.

    2016-02-01

    We present the uncertainty relation for the characteristic functions (ChUR) of the quantum mechanical position and momentum probability distributions. This inequality is more general than the Heisenberg uncertainty relation and is saturated in two extreme cases for wave functions described by periodic Dirac combs. We further discuss a broad spectrum of applications of the ChUR; in particular, we constrain quantum optical measurements involving general detection apertures and provide the uncertainty relation that is relevant for loop quantum cosmology. A method to measure the characteristic function directly using an auxiliary qubit is also briefly discussed.

  5. Relative illumination and image distortion

    NASA Astrophysics Data System (ADS)

    Siew, Ronian

    2017-04-01

    Applying flux conserving properties between the entrance and exit pupils of a lens system, as well as ideas concerning irradiance magnification in the low numerical aperture limit, it is shown that some basic radiometric equations may be recast into an expression for relative illumination that reveals effects from image distortion and a lesser known quantity called "differential distortion." The expression presented offers a rapid means for estimating the effects of image distortion on relative illumination, which may be useful for basic analysis prior to applying the more comprehensive formulary for relative illumination that has been provided by Reshidko and Sasian.

  6. [Catheter-related infections: microbiology].

    PubMed

    Timsit, J F

    2005-03-01

    Coagulase negative staphylococci, Staphylococcus aureus and Pseudomonas sp. are the most frequent microorganisms responsible for catheter-related infections. A relative frequency of microorganisms varies according to the countries, microenvironment and outbreaks of multiresistant bacterias. Infections due to fungi, S. aureus and Pseudomonas sp. are associated with the more severe complications. Recent data suggest that chlorhexidine, either used for cutaneous antisepsis or for catheter impregnation decreases infections due to gram positive cocci. Ecological data should be taken into account when deciding a probabilistic treatment in case of suspicion of catheter-related infection.

  7. Spinning fluids in general relativity

    NASA Technical Reports Server (NTRS)

    Ray, J. R.; Smalley, L. L.

    1982-01-01

    General relativity field equations are employed to examine a continuous medium with internal spin. A variational principle formerly applied in the special relativity case is extended to the general relativity case, using a tetrad to express the spin density and the four-velocity of the fluid. An energy-momentum tensor is subsequently defined for a spinning fluid. The equations of motion of the fluid are suggested to be useful in analytical studies of galaxies, for anisotropic Bianchi universes, and for turbulent eddies.

  8. Spinning fluids in general relativity

    NASA Technical Reports Server (NTRS)

    Ray, J. R.; Smalley, L. L.

    1982-01-01

    General relativity field equations are employed to examine a continuous medium with internal spin. A variational principle formerly applied in the special relativity case is extended to the general relativity case, using a tetrad to express the spin density and the four-velocity of the fluid. An energy-momentum tensor is subsequently defined for a spinning fluid. The equations of motion of the fluid are suggested to be useful in analytical studies of galaxies, for anisotropic Bianchi universes, and for turbulent eddies.

  9. Duality relation for quantum ratchets.

    PubMed

    Peguiron, J; Grifoni, M

    2005-01-01

    A duality relation between the long-time dynamics of a quantum Brownian particle in a tilted ratchet potential and a driven dissipative tight-binding model is reported. It relates a situation of weak dissipation in one model to strong dissipation in the other one, and vice versa. We apply this duality relation to investigate transport and rectification in ratchet potentials: From the linear mobility we infer ground-state delocalization for weak dissipation. We report reversals induced by adiabatic driving and temperature in the ratchet current and its dependence on the potential shape.

  10. Flavorings-Related Lung Disease

    MedlinePlus

    ... and workers can take steps to address working conditions and work practices that place workers at risk. Flavorings-Related ... advise workers about any suspected or confirmed medical condition that may be ... exposures, about recommendations for further evaluation and treatment, ...

  11. Catheter-related bloodstream infections.

    PubMed

    Wilcox, Tracie A

    2009-06-01

    Tunneled, cuffed, double-lumen catheters are commonly used for long-term venous access in hemodialysis patients. Complications of these catheters, including catheter-related infection, are a major cause of morbidity and resource utilization in the hemodialysis population. Treatment of catheter-related bloodstream infections includes the use of antibiotics and evaluation of the need for catheter removal or exchange. Measures to prevent catheter-related infections include use of an aseptic technique and antiseptic cleaning solution, elimination of Staphylococcus aureus nasal carriage, topical exit site application of antibiotics, use of antibiotic lock solutions, and use of catheters and cuffs coated or impregnated with antimicrobial or antiseptic agents. This review article will provide an update on the prevalence, diagnosis, treatment, and prevention of catheter-related infections in the hemodialysis population.

  12. SUPERSITES INTEGRATED RELATIONAL DATABASE (SIRD)

    EPA Science Inventory

    As part of EPA's Particulate Matter (PM) Supersites Program (Program), the University of Maryland designed and developed the Supersites Integrated Relational Database (SIRD). Measurement data in SIRD include comprehensive air quality data from the 7 Supersite program locations f...

  13. Relative-datum Loran navigation

    NASA Technical Reports Server (NTRS)

    Elias, A.

    1983-01-01

    For short range navigation around an airport, there are operational and computational advantages in changing the reference frame for Loran navigation of the normal latitude-longitude frame to a tangential local reference plane. This is called ""Relative Datum Loran Navigation'' since it is centered at a selected reference point (such as a runway touchdown point) whose time differences (TD's) in a given Loran grid accurately surveyed. If the receiver TD's are related to this datum to produce a relative TD (delta TD), the computation of its position in the x,y local reference plane can be computed easily using two linked linear equations which have four known constant coefficients. The TD's of all touchdown points and these four coefficients in order to provide x,y in local reference planes related to each runway can be stored.

  14. Relativity and the mercury battery.

    PubMed

    Zaleski-Ejgierd, Patryk; Pyykkö, Pekka

    2011-10-06

    Comparative, fully relativistic (FR), scalar relativistic (SR) and non-relativistic (NR) DFT calculations attribute about 30% of the mercury-battery voltage to relativity. The obtained percentage is smaller than for the lead-acid battery, but not negligible.

  15. SUPERSITES INTEGRATED RELATIONAL DATABASE (SIRD)

    EPA Science Inventory

    As part of EPA's Particulate Matter (PM) Supersites Program (Program), the University of Maryland designed and developed the Supersites Integrated Relational Database (SIRD). Measurement data in SIRD include comprehensive air quality data from the 7 Supersite program locations f...

  16. Sports-related Head Injury

    MedlinePlus

    ... or even death. The 4th International Conference on Concussion in Sport held in Zurich, Switzerland in 2012 defined concussion, ... To view peer-reviewed literature related to sports concussions, the Sports Concussion Library can be found here . Incidence The ...

  17. Symmetry relations in nucleon decay

    NASA Astrophysics Data System (ADS)

    Hurlbert, Anya; Wilczek, Frank

    1980-05-01

    Some experimental consequences of the structure of the effective hamiltonian for nucleon decay are presented. New results concern relations among inclusive decay rates, a striking test of the kinship hypothesis involving μ+ polarization, and soft π theorems.

  18. Cancer Treatment-Related Cardiotoxicity

    Cancer.gov

    Cancer Treatment-Related Cardiotoxicity includes efforts to identify individual toxicity risks and prevention strategies support the National Cancer Insitute's goal of reducing the burden of cancer diagnoses and treatment outcomes.

  19. Some Pitfalls in Special Relativity

    ERIC Educational Resources Information Center

    Chai, An-Ti

    1973-01-01

    The problem of observing a collision between two spaceships is utilized to illustrate the misuse of time dilation and length contraction, and the incorrect description of space-time coordinates in special relativity. (Author/DF)

  20. Some Pitfalls in Special Relativity

    ERIC Educational Resources Information Center

    Chai, An-Ti

    1973-01-01

    The problem of observing a collision between two spaceships is utilized to illustrate the misuse of time dilation and length contraction, and the incorrect description of space-time coordinates in special relativity. (Author/DF)

  1. Induction of Relational Algebra Expressions

    NASA Astrophysics Data System (ADS)

    Gillis, Joris J. M.; van den Bussche, Jan

    We study the problem of inducing relational databases queries expressing quantification. Such queries express interesting multi-relational patterns in a database in a concise manner. Queries on relational databases can be expressed as Datalog programs. Inducing Datalog programs expressing quantification requires both negation and predicate invention. Predicate invention has been studied in the ILP literature. However, we propose a radical new approach to inducing quantification. We express queries in the relational algebra and we perform a heuristic search for the desired expression. A heuristic, which takes the complement operator into account, is proposed. We report some preliminary experimental results of a software prototype implementing our ideas. The results are compared with the results of FOIL and Tilde on the same examples.

  2. Age-Related Macular Degeneration

    MedlinePlus

    ... version of this page please turn Javascript on. Age-related Macular Degeneration About AMD Click for more ... a leading cause of vision loss among people age 60 and older. It causes damage to the ...

  3. Uncertainty relation for mutual information

    NASA Astrophysics Data System (ADS)

    Schneeloch, James; Broadbent, Curtis J.; Howell, John C.

    2014-12-01

    We postulate the existence of a universal uncertainty relation between the quantum and classical mutual informations between pairs of quantum systems. Specifically, we propose that the sum of the classical mutual information, determined by two mutually unbiased pairs of observables, never exceeds the quantum mutual information. We call this the complementary-quantum correlation (CQC) relation and prove its validity for pure states, for states with one maximally mixed subsystem, and for all states when one measurement is minimally disturbing. We provide results of a Monte Carlo simulation suggesting that the CQC relation is generally valid. Importantly, we also show that the CQC relation represents an improvement to an entropic uncertainty principle in the presence of a quantum memory, and that it can be used to verify an achievable secret key rate in the quantum one-time pad cryptographic protocol.

  4. Principles of JTIDS Relative Navigation

    NASA Astrophysics Data System (ADS)

    Ranger, J. F. O.

    This paper describes one of the key features of the JTIDS/Link 16 tactical data-link, namely its relative navigation facility. A brief overview of the general features of the JTIDS system is given to provide the necessary background to the navigation aspects, and some mention is made of the message-exchange facilities. The main part of the paper describes how the JTIDS system provides the capability to perform accurate navigation, and discusses the basic principles of its operation. Some applications of the navigation function which enhance operational effectiveness are then described. The following topics are covered:(ii) JTIDS Architecture(i) Definition of JTIDS/Link 16(iii) Principles of Relative Navigation(iv) Source Selection(v) The Kalman Filter(vi) Time Synchronization(vii) The Use of Relative Navigation(viii) The Relative Grid

  5. International Conference on Human Relations.

    DTIC Science & Technology

    2007-11-02

    Festinger , Sherif, Ex, Rohrer, Pinto, Singh, and Mailhiot. One outcome of the Conference was the formation of a working committee to establish an International Documentation and Information Center for the field of Human Relations.

  6. Public Relations for Performance Technologists.

    ERIC Educational Resources Information Center

    Yelon, Lisa; Yelon, Stephen

    2000-01-01

    Explains public relations and describes how it can be used effectively by performance technologists. Topics include choosing a suitable project; determining the target audience; press releases; press kits; and contacting journalists. (LRW)

  7. Fluctuation relations for anisotropic systems

    NASA Astrophysics Data System (ADS)

    Villavicencio-Sanchez, R.; Harris, R. J.; Touchette, H.

    2014-02-01

    Currents of particles or energy in driven non-equilibrium steady states are known to satisfy certain symmetries, referred to as fluctuation relations, determining the ratio of the probabilities of positive fluctuations to negative ones. A generalization of these fluctuation relations has been proposed recently for extended non-equilibrium systems of dimension greater than one, assuming, crucially, that they are isotropic (Hurtado P. I., Pérez-Espigares C., del Pozo J. J. and Garrido P. L., Proc. Natl. Acad. Sci. U.S.A., 108 (2011) 7704). Here we relax this assumption and derive a fluctuation relation for d-dimensional systems having anisotropic bulk driving rates. We test the validity of this anisotropic fluctuation relation by calculating the particle current fluctuations in the 2d anisotropic zero-range process, using both exact and fluctuating hydrodynamic approaches.

  8. Programs Related to Septic Systems

    EPA Pesticide Factsheets

    There are many programs, both at the EPA and elsewhere, that relate to the decentralized wastewater program and provide information about how decentralized wastewater is integrated in environmental quality, planning, protection, and conservation.

  9. Exts and the AGT Relations

    NASA Astrophysics Data System (ADS)

    Neguţ, Andrei

    2016-09-01

    We prove the connection between the Nekrasov partition function of {N=2} super-symmetric U(2) gauge theory with adjoint matter and conformal blocks for the Virasoro algebra, as predicted by the Alday-Gaiotto-Tachikawa relations. Mathematically, this is achieved by relating the Carlsson-Okounkov Ext vector bundle on the moduli space of rank 2 sheaves with Liouville vertex operators. Our approach is geometric in nature, and uses a new method for intersection-theoretic computations of the Ext operator.

  10. Analytical Relativity of Black Holes

    NASA Astrophysics Data System (ADS)

    Damour, Thibault

    The successful detection and analysis of gravitational wave (GW) signals from coalescing binary black holes necessitates the accurate prior knowledge of the form of the GW signals. This knowledge can be acquired through a synergy between Analytical Relativity (AR) methods and Numerical Relativity (NR) ones. We describe here the most promising AR formalism for describing the motion and radiation of coalescing binary black holes, the Effective One Body (EOB) method, and discuss its comparison with NR simulations.

  11. Chaos Theory and International Relations

    DTIC Science & Technology

    2016-12-01

    benefit decision makers, who can avoid mistakes by testing their decisions with the help of mathematical models . This thesis provides an overview of Chaos...international relations domain, Chaos Theory is modeled in two specific international relations puzzles, bipolarity and democratic peace, to show the...utility of the theory in this social science field. The results of the model are compared with the conventional international theories of Liberalism and

  12. Programming with a Relational Calculus.

    DTIC Science & Technology

    1981-09-03

    K:x f(K:x) = K:(f:x) = Kf:x S= I: 12. Ancestral Relations 12.1 definition Carnap (2] defines the relation of a property p being hereditary with respect...from the von Neu- mann style? A functional style and its algebra of pro- grams, CACM 21, 8 (August 1978), 613-641. (2] Carnap , R. Introduction to

  13. Bayesian analogy with relational transformations.

    PubMed

    Lu, Hongjing; Chen, Dawn; Holyoak, Keith J

    2012-07-01

    How can humans acquire relational representations that enable analogical inference and other forms of high-level reasoning? Using comparative relations as a model domain, we explore the possibility that bottom-up learning mechanisms applied to objects coded as feature vectors can yield representations of relations sufficient to solve analogy problems. We introduce Bayesian analogy with relational transformations (BART) and apply the model to the task of learning first-order comparative relations (e.g., larger, smaller, fiercer, meeker) from a set of animal pairs. Inputs are coded by vectors of continuous-valued features, based either on human magnitude ratings, normed feature ratings (De Deyne et al., 2008), or outputs of the topics model (Griffiths, Steyvers, & Tenenbaum, 2007). Bootstrapping from empirical priors, the model is able to induce first-order relations represented as probabilistic weight distributions, even when given positive examples only. These learned representations allow classification of novel instantiations of the relations and yield a symbolic distance effect of the sort obtained with both humans and other primates. BART then transforms its learned weight distributions by importance-guided mapping, thereby placing distinct dimensions into correspondence. These transformed representations allow BART to reliably solve 4-term analogies (e.g., larger:smaller::fiercer:meeker), a type of reasoning that is arguably specific to humans. Our results provide a proof-of-concept that structured analogies can be solved with representations induced from unstructured feature vectors by mechanisms that operate in a largely bottom-up fashion. We discuss potential implications for algorithmic and neural models of relational thinking, as well as for the evolution of abstract thought. Copyright 2012 APA, all rights reserved.

  14. Relating hippocampus to relational memory processing across domains and delays.

    PubMed

    Monti, Jim M; Cooke, Gillian E; Watson, Patrick D; Voss, Michelle W; Kramer, Arthur F; Cohen, Neal J

    2015-02-01

    The hippocampus has been implicated in a diverse set of cognitive domains and paradigms, including cognitive mapping, long-term memory, and relational memory, at long or short study-test intervals. Despite the diversity of these areas, their association with the hippocampus may rely on an underlying commonality of relational memory processing shared among them. Most studies assess hippocampal memory within just one of these domains, making it difficult to know whether these paradigms all assess a similar underlying cognitive construct tied to the hippocampus. Here we directly tested the commonality among disparate tasks linked to the hippocampus by using PCA on performance from a battery of 12 cognitive tasks that included two traditional, long-delay neuropsychological tests of memory and two laboratory tests of relational memory (one of spatial and one of visual object associations) that imposed only short delays between study and test. Also included were different tests of memory, executive function, and processing speed. Structural MRI scans from a subset of participants were used to quantify the volume of the hippocampus and other subcortical regions. Results revealed that the 12 tasks clustered into four components; critically, the two neuropsychological tasks of long-term verbal memory and the two laboratory tests of relational memory loaded onto one component. Moreover, bilateral hippocampal volume was strongly tied to performance on this component. Taken together, these data emphasize the important contribution the hippocampus makes to relational memory processing across a broad range of tasks that span multiple domains.

  15. Relating Hippocampus to Relational Memory Processing across Domains and Delays

    PubMed Central

    Monti, Jim M.; Cooke, Gillian E.; Watson, Patrick D.; Voss, Michelle W.; Kramer, Arthur F.; Cohen, Neal J.

    2015-01-01

    The hippocampus has been implicated in a diverse set of cognitive domains and paradigms, including cognitive mapping, long-term memory, and relational memory, at long or short study–test intervals. Despite the diversity of these areas, their association with the hippocampus may rely on an underlying commonality of relational memory processing shared among them. Most studies assess hippocampal memory within just one of these domains, making it difficult to know whether these paradigms all assess a similar underlying cognitive construct tied to the hippocampus. Here we directly tested the commonality among disparate tasks linked to the hippocampus by using PCA on performance from a battery of 12 cognitive tasks that included two traditional, long-delay neuropsychological tests of memory and two laboratory tests of relational memory (one of spatial and one of visual object associations) that imposed only short delays between study and test. Also included were different tests of memory, executive function, and processing speed. Structural MRI scans from a subset of participants were used to quantify the volume of the hippocampus and other subcortical regions. Results revealed that the 12 tasks clustered into four components; critically, the two neuropsychological tasks of long-term verbal memory and the two laboratory tests of relational memory loaded onto one component. Moreover, bilateral hippocampal volume was strongly tied to performance on this component. Taken together, these data emphasize the important contribution the hippocampus makes to relational memory processing across a broad range of tasks that span multiple domains. PMID:25203273

  16. Higher-order uncertainty relations

    NASA Astrophysics Data System (ADS)

    Wünsche, A.

    2006-07-01

    Using the non-negativity of Gram determinants of arbitrary order, we derive higher-order uncertainty relations for the symmetric uncertainty matrices of corresponding order n?>?2 to n Hermitean operators (n?=?2 is the usual case). The special cases of third-order and fourth-order uncertainty relations are considered in detail. The obtained third-order uncertainty relations are applied to the Lie groups SU(1,1) with three Hermitean basis operators (K1,K2,K0) and SU(2) with three Hermitean basis operators (J1,J2,J3) where, in particular, the group-coherent states of Perelomov type and of Barut Girardello type for SU(1,1) and the spin or atomic coherent states for SU(2) are investigated. The uncertainty relations for the determinant of the third-order uncertainty matrix are satisfied with the equality sign for coherent states and this determinant becomes vanishing for the Perelomov type of coherent states for SU(1,1) and SU(2). As an example of the application of fourth-order uncertainty relations, we consider the canonical operators (Q1,P1,Q2,P2) of two boson modes and the corresponding uncertainty matrix formed by the operators of the corresponding mean deviations, taking into account the correlations between the two modes. In two mathematical appendices, we prove the non-negativity of the determinant of correlation matrices of arbitrary order and clarify the principal structure of higher-order uncertainty relations.

  17. Comparison of alternative relative weights for diagnosis-related groups

    PubMed Central

    Cotterill, Philip; Bobula, Joel; Connerton, Rose

    1986-01-01

    During this study, we investigated the extent to which diagnosis-related group (DRG) relative weights based exclusively on charge data differ from DRG weights constructed according to the methodology used in deriving the original relative weights for the Medicare prospective payment system (PPS). The PPS operating cost weights were based on a combination of cost and adjusted charge information (Pettengill and Vertrees, 1982). The results of this study reveal only minor differences between the two sets of weights. Interhospital differences in cost-to-charge ratios do not produce large, arbitrary differences between charge-based and operating cost weights. Whether the data are standardized for differences in capital and medical education costs also appears to make little difference. PMID:10311495

  18. Non-astrophysical numerical relativity

    NASA Astrophysics Data System (ADS)

    Garfinkle, David; Lehner, Luis

    2012-12-01

    Numerical relativity is a powerful tool for astrophysical applications where gravity is strong, as shown dramatically by numerical studies of compact binary systems. However, as a fundamental theory of space, time and gravity, general relativity has many non-astrophysical aspects, and numerical techniques can also be used to great advantage in these areas. This is especially true now that developments in high energy physics, and particularly string theory, have led to new applications of general relativity. Numerical simulations of black holes in 4 spacetime dimensions, adapted and expanded, can be exploited to simulate higher dimensional black holes (as well as other `black objects' like black strings). Through the AdS/CFT correspondence, such simulations of higher dimensional spacetimes (in this case with AdS boundary conditions) can be used to gain information about strongly coupled field theories. High energy physics also leads us to regard general relativity as an effective low energy theory and to think of what the lowest order corrections to that theory might be. Here too, numerical relativity can be used to simulate such corrections and find their observational consequences. A promising approach to quantizing general relativity is loop quantum gravity. In particular, for the purposes of understanding cosmology, and perhaps resolving the big bang singularity through quantum effects, it is helpful to consider loop quantum gravity truncated to a small number of degrees of freedom. Even with such a truncation, loop quantum gravity is sufficiently complicated that numerical techniques can be used to great advantage. Though it is generally hoped that quantum gravity will resolve singularities, it is a good idea to understand exactly what it is that one hopes to resolve. Thus, one would like a thorough understanding of the singularities of classical general relativity. Numerical techniques are essential in obtaining this understanding of singularities. This focus

  19. Relative Entropy and Squashed Entanglement

    NASA Astrophysics Data System (ADS)

    Li, Ke; Winter, Andreas

    2014-02-01

    We are interested in the properties and relations of entanglement measures. Especially, we focus on the squashed entanglement and relative entropy of entanglement, as well as their analogues and variants. Our first result is a monogamy-like inequality involving the relative entropy of entanglement and its one-way LOCC variant. The proof is accomplished by exploring the properties of relative entropy in the context of hypothesis testing via one-way LOCC operations, and by making use of an argument resembling that by Piani on the faithfulness of regularized relative entropy of entanglement. Following this, we obtain a commensurate and faithful lower bound for squashed entanglement, in the form of one-way LOCC relative entropy of entanglement. This gives a strengthening to the strong subadditivity of von Neumann entropy. Our result improves the trace-distance-type bound derived in Brandão et al. (Commun Math Phys, 306:805-830, 2011), where faithfulness of squashed entanglement was first proved. Applying Pinsker's inequality, we are able to recover the trace-distance-type bound, even with slightly better constant factor. However, the main improvement is that our new lower bound can be much larger than the old one and it is almost a genuine entanglement measure. We evaluate exactly the relative entropy of entanglement under various restricted measurement classes, for maximally entangled states. Then, by proving asymptotic continuity, we extend the exact evaluation to their regularized versions for all pure states. Finally, we consider comparisons and separations between some important entanglement measures and obtain several new results on these, too.

  20. Related impurities in peptide medicines.

    PubMed

    D'Hondt, Matthias; Bracke, Nathalie; Taevernier, Lien; Gevaert, Bert; Verbeke, Frederick; Wynendaele, Evelien; De Spiegeleer, Bart

    2014-12-01

    Peptides are an increasingly important group of pharmaceuticals, positioned between classic small organic molecules and larger bio-molecules such as proteins. Currently, the peptide drug market is growing twice as fast as other drug markets, illustrating the increasing clinical as well as economical impact of this medicine group. Most peptides today are manufactured by solid-phase peptide synthesis (SPPS). This review will provide a structured overview of the most commonly observed peptide-related impurities in peptide medicines, encompassing the active pharmaceutical ingredients (API or drug substance) as well as the finished drug products. Not only is control of these peptide-related impurities and degradants critical for the already approved and clinically used peptide-drugs, these impurities also possess the capability of greatly influencing initial functionality studies during early drug discovery phases, possibly resulting in erroneous conclusions. The first group of peptide-related impurities is SPPS-related: deletion and insertion of amino acids are related to inefficient Fmoc-deprotection and excess use of amino acid reagents, respectively. Fmoc-deprotection can cause racemization of amino acid residues and thus diastereomeric impurities. Inefficient deprotection of amino acid side chains results into peptide-protection adducts. Furthermore, unprotected side chains can react with a variety of reagents used in the synthesis. Oxidation of amino acid side chains and dimeric-to-oligomeric impurities were also observed. Unwanted peptide counter ions such as trifluoroacetate, originating from the SPPS itself or from additional purification treatments, may also be present in the final peptide product. Contamination of the desired peptide product by other unrelated peptides was also seen, pointing out the lack of appropriate GMP. The second impurity group results from typical peptide degradation mechanisms such as β-elimination, diketopiperazine, pyroglutamate

  1. Onsager-Casimir relations revisited

    SciTech Connect

    Hubmer, G.F.; Titulaer, U.M.

    1987-10-01

    The authors study the fate of the Onsager-Casimir reciprocity relations for a continuous system when some of its variables are eliminated adiabatically. Just as for discrete systems, deviations appear in correction terms to the reduced evolution equation that are of higher order in the time scale ratio. The deviations are not removed by including correction terms to the coarse-grained thermodynamic potential. However, via a reformulation of the theory, in which the central role of the thermodynamic potential is taken over by an associated Lagrangian-type expression, they arrive at a modified form of the Onsager-Casimir relations that survives the adiabatic elimination procedure. There is a simple relation between the time evolution of the redefined thermodynamic forces and that of the basic thermodynamic variables; this relation also survives the adiabatic elimination. The formalism is illustrated by explicit calculations for the Klein-Kramers equation, which describes the phase space distribution of Brownian particles, and for the corrected Smoluchowski equation derived from it by adiabatic elimination of the velocity variable. The symmetry relation for the latter leads to a simple proof that the reality of the eigenvalues of the simple Smoluchowski equation is not destroyed by the addition of higher order corrections, at least not within the framework of a formal perturbation expansion in the time scale ratio.

  2. Mirages in galaxy scaling relations

    NASA Astrophysics Data System (ADS)

    Mosenkov, A. V.; Sotnikova, N. Ya.; Reshetnikov, V. P.

    2014-06-01

    We analysed several basic correlations between structural parameters of galaxies. The data were taken from various samples in different passbands which are available in the literature. We discuss disc scaling relations as well as some debatable issues concerning the so-called Photometric Plane for bulges and elliptical galaxies in different forms and various versions of the famous Kormendy relation. We show that some of the correlations under discussion are artificial (self-correlations), while others truly reveal some new essential details of the structural properties of galaxies. Our main results are as follows: At present, we cannot conclude that faint stellar discs are, on average, more thin than discs in high surface brightness galaxies. The `central surface brightness-thickness' correlation appears only as a consequence of the transparent exponential disc model to describe real galaxy discs. The Photometric Plane appears to have no independent physical sense. Various forms of this plane are merely sophisticated versions of the Kormendy relation or of the self-relation involving the central surface brightness of a bulge/elliptical galaxy and the Sérsic index n. The Kormendy relation is a physical correlation presumably reflecting the difference in the origin of bright and faint ellipticals and bulges. We present arguments that involve creating artificial samples to prove our main idea.

  3. Age-related macular degeneration.

    PubMed

    Lim, Laurence S; Mitchell, Paul; Seddon, Johanna M; Holz, Frank G; Wong, Tien Y

    2012-05-05

    Age-related macular degeneration is a major cause of blindness worldwide. With ageing populations in many countries, more than 20% might have the disorder. Advanced age-related macular degeneration, including neovascular age-related macular degeneration (wet) and geographic atrophy (late dry), is associated with substantial, progressive visual impairment. Major risk factors include cigarette smoking, nutritional factors, cardiovascular diseases, and genetic markers, including genes regulating complement, lipid, angiogenic, and extracellular matrix pathways. Some studies have suggested a declining prevalence of age-related macular degeneration, perhaps due to reduced exposure to modifiable risk factors. Accurate diagnosis combines clinical examination and investigations, including retinal photography, angiography, and optical coherence tomography. Dietary anti-oxidant supplementation slows progression of the disease. Treatment for neovascular age-related macular degeneration incorporates intraocular injections of anti-VEGF agents, occasionally combined with other modalities. Evidence suggests that two commonly used anti-VEGF therapies, ranibizumab and bevacizumab, have similar efficacy, but possible differences in systemic safety are difficult to assess. Future treatments include inhibition of other angiogenic factors, and regenerative and topical therapies.

  4. Age-related macular degeneration

    PubMed Central

    Coleman, Hanna R; Chan, Chi-Chao; Ferris, Frederick L; Chew, Emily Y

    2008-01-01

    Age-related macular degeneration is the leading cause of blindness in elderly populations of European descent. The most consistent risk factors associated with this ocular condition are increasing age and cigarette smoking. Genetic investigations have shown that complement factor H, a regulator of the alternative complement pathway, and LOC387715/HtrA1 are the most consistent genetic risk factors for age-related macular degeneration. Although the pathogenesis of this disease is unknown, oxidative stress might have an important role. Treatment with antioxidant vitamins and zinc can reduce the risk of developing advanced age-related macular degeneration by about a quarter in those at least at moderate risk. Intravitreal injections of ranibizumab, a monoclonal antibody that inhibits all forms of vascular endothelial growth factor, have been shown to stabilise loss of vision and, in some cases, improve vision in individuals with neovascular age-related macular degeneration. These findings, combined with assessments of possible environmental and genetic interactions and new approaches to modulate inflammatory pathways, will hopefully further expand our ability to understand and treat age-related macular degeneration. PMID:19027484

  5. Sleep-related movement disorders.

    PubMed

    Silber, Michael H

    2013-02-01

    This article reviews the sleep-related movement disorders, including restless legs syndrome (RLS; Willis-Ekbom disease), periodic limb movement disorder, rhythmic movement disorders, sleep-related bruxism, and sleep-related leg cramps. The prevalence of clinically significant RLS is 1.5% to 3.0%. The pathophysiology of RLS may involve abnormal iron transport across the blood-brain barrier and down-regulation of putaminal D2 receptors. The availability of the rotigotine patch provides an additional form of dopaminergic therapy for RLS. Calcium channel alpha-2-delta ligands (gabapentin, gabapentin enacarbil, and pregabalin) provide alternative therapies for RLS especially in patients with augmentation, impulse control disorders, or hypersomnia induced by dopamine agonists. Long-term use of opioid medication is safe and effective for refractory cases of RLS. RLS is a common disorder causing considerable morbidity. Accurate diagnosis and appropriate investigations are essential. Many effective therapies are available, but the side effects of each class of medication should be considered in determining optimal treatment. Periodic limb movements of sleep, bruxism, and rhythmic movement disorders are sleep-related phenomena often accompanying other sleep disorders and only sometimes requiring primary therapy. Sleep-related leg cramps are generally idiopathic. Management is challenging with few effective therapies.

  6. Relational language and the development of relational mapping.

    PubMed

    Loewenstein, Jeffrey; Gentner, Dedre

    2005-06-01

    We test the claim that learning and using language for spatial relations can influence spatial representation and reasoning. Preschool children were given a mapping task in which they were asked to find a "winner" placed in a three-tiered box after seeing one placed in a virtually identical box. The correct choice was determined by finding the corresponding relative location in the test box, making it a difficult task for preschool children. We found that hearing language for spatial relations facilitated children's mapping performance. We found effects at younger ages on easier tasks (Experiments 1 and 2) and at older ages on harder tasks (Experiment 3). The effects of spatial relational language differed predictably according to the semantics of the terms children heard (Experiment 4). Finally, the effects of spatial language were maintained over time (Experiment 5): children given one initial exposure to the spatial terms maintained their advantage over baseline children when they again carried out the mapping task 2 days later, with no further exposure to the spatial terms. The evidence is consistent with the explanation that language bolsters children's spatial encodings, which in turn supports their mapping performance.

  7. Researcher/Researched: Relations of Vulnerability/Relations of Power

    ERIC Educational Resources Information Center

    Huckaby, M. Francyne

    2011-01-01

    Turning to reflexive journals and fieldnotes, the author reconsiders Foucault's "relations of power" through her experiences with five research participants, who are professors of education. The paper explores: (1) the translation of Foucault for an analysis of power; (2) the dynamics of researching up and analyzing from below; and (3) the…

  8. Relative Prevalence and Relations among Stereotyped and Similar Behaviors.

    ERIC Educational Resources Information Center

    Berkson, Gershon; And Others

    1995-01-01

    Relative prevalence of stereotyped behaviors was studied with 246 children and adults with developmental disabilities. Two staff members completed a 54-item checklist assessing stereotyped behaviors, abnormal focused affections, compulsions, rigidity, savant skills, and defensiveness. Factor analyses produced weak evidence for a general stereotypy…

  9. Age-Related Differences in Worry and Related Processes

    ERIC Educational Resources Information Center

    Basevitz, Paul; Pushkar, Dolores; Chaikelson, June; Conway, Michael; Dalton, Connie

    2008-01-01

    This study investigated the hypothesis that older adults would show age-related reductions in the tendency to worry in both their retrospective accounts and through cross-sectional age comparisons with a sample of younger adults. We also sought to determine whether age differences would be evident in psychological processes associated with a…

  10. Researcher/Researched: Relations of Vulnerability/Relations of Power

    ERIC Educational Resources Information Center

    Huckaby, M. Francyne

    2011-01-01

    Turning to reflexive journals and fieldnotes, the author reconsiders Foucault's "relations of power" through her experiences with five research participants, who are professors of education. The paper explores: (1) the translation of Foucault for an analysis of power; (2) the dynamics of researching up and analyzing from below; and (3) the…

  11. Exchange Forces in Dispersion Relations Investigated Using Circuit Relations

    NASA Technical Reports Server (NTRS)

    Vrinceanu, D.; Msezane, A. Z.; Bessis, D.; Temkin, A.; Fisher, Richard R. (Technical Monitor)

    2000-01-01

    We propose a novel method to compute in an exact manner the left-hand cut discontinuity of the electron-Atom partial wave scattering amplitude in the complex energy plane within the static stage approximation. Zero energy dispersion relations for electron-Hydrogen scattering are computed numerically for illustration.

  12. Exchange Forces in Dispersion Relations Investigated Using Circuit Relations

    NASA Technical Reports Server (NTRS)

    Vrinceanu, D.; Msezane, A. Z.; Bessis, D.; Temkin, A.; Fisher, Richard R. (Technical Monitor)

    2000-01-01

    We propose a novel method to compute in an exact manner the left-hand cut discontinuity of the electron-Atom partial wave scattering amplitude in the complex energy plane within the static stage approximation. Zero energy dispersion relations for electron-Hydrogen scattering are computed numerically for illustration.

  13. Inhomogeneous cosmology with numerical relativity

    NASA Astrophysics Data System (ADS)

    Macpherson, Hayley J.; Lasky, Paul D.; Price, Daniel J.

    2017-03-01

    We perform three-dimensional numerical relativity simulations of homogeneous and inhomogeneous expanding spacetimes, with a view toward quantifying nonlinear effects from cosmological inhomogeneities. We demonstrate fourth-order convergence with errors less than one part in 1 06 in evolving a flat, dust Friedmann-Lemaître-Roberston-Walker spacetime using the Einstein Toolkit within the Cactus framework. We also demonstrate agreement to within one part in 1 03 between the numerical relativity solution and the linear solution for density, velocity and metric perturbations in the Hubble flow over a factor of ˜350 change in scale factor (redshift). We simulate the growth of linear perturbations into the nonlinear regime, where effects such as gravitational slip and tensor perturbations appear. We therefore show that numerical relativity is a viable tool for investigating nonlinear effects in cosmology.

  14. [Selected work-related nephropathies].

    PubMed

    Wołyniec, Wojciech; Renke, Marcin; Wójcik-Stasiak, Małgorzata; Renke, Joanna

    2015-01-01

    Infections, high temperature and many of the toxic substances can cause kidney damage. Acute kidney injury is a well known complication of some work-related diseases, e.g., lead intoxication. Chronic kidney disease can also be caused by some occupational factors. Three work-related nephropathies, in which causal connection with work has been proved, are discussed in this article. There are different risk factors of nephrolithiasis, lead nephropathy and silica nephropathy, but each of them can cause chronic kidney disease. Prevention of these nephropaties seems to be relatively simple. The principles of protection from the toxic effects of heavy metals and silica dust are very specific. The most important prevention of kidney stones is correct fluid intake. In addition to providing adequate quantities of drinking water, it is also important to educate exposed workers and assure enough rest breaks at work.

  15. Pregnancy-related liver disorders.

    PubMed

    Goel, Ashish; Jamwal, Kapil D; Ramachandran, Anup; Balasubramanian, Kunissery A; Eapen, Chundamannil E

    2014-06-01

    Pregnancy-related liver disorders accounted for 8% of all maternal deaths at our center from 1999 to 2011. Of the three pregnancy-related liver disorders (acute fatty liver of pregnancy (AFLP), HELLP (Hemolysis, elevated liver enzymes, low platelets) syndrome and pre-eclamptic liver dysfunction, which can lead to adverse maternal and fetal outcome, AFLP is most typically under - diagnosed. Risk of maternal death can be minimised by timely recognition and early/aggressive multi-specialty management of these conditions. Urgent termination of pregnancy remains the cornerstone of therapy for some of these life threatening disorders, but recent advancements in our understanding help us in better overall management of these patients. This review focuses on various aspects of pregnancy-related liver disorders.

  16. Anti-de Sitter relativity

    NASA Astrophysics Data System (ADS)

    Cotǎescu, Ion I.

    2017-08-01

    The relative geodesic motion on (1 +3 )-dimensional anti-de Sitter spacetimes is studied in terms of conserved quantities by adapting the Nachtmann boosting method created initially for de Sitter spacetimes. In this approach the Lorentzian isometry is derived, relating the coordinates of the local chart of a fixed observer with the coordinates of a mobile chart considered as the rest frame of a massive mobile object moving on a timelike anti-de Sitter geodesic. The transformation of the conserved quantities is also investigated, constructing thus a complete theory of the relative geodesic motion on anti-de Sitter spacetimes. Some applications are discussed, among which the problems of twin paradox and Lorentz contraction are solved.

  17. Medical practice and related insurance.

    PubMed

    Chormunge, Vijay; Pawar, Vasantrao; Patil, Ajay

    2012-03-01

    The liability of a doctor as regards medical negligence is now a well accepted eventuality. However still many doctors and hospitals are unaware of their liability on account of negligence on the part of their junior doctors and hospital staff. Indemnity insurance specifically protects you against your liability to pay compensation including legal costs, fees or expenses. If court orders to pay compensation for negligence of patient and you have a valid insurance cover, the insurance company is supposed to pay the money. In the present text we are highlighting the medical practice related insurance such as personal indemnity insurance, error and omission policy for hospital and nursing homes and insurance policy related to damage to hospital building, damage to electrical and electronics appliances and also insurance for doctor's kit, signboard, burglary, fidelity guarantee and loss of money in transit. All this medical practice related insurance is explained with its present charges, terms and conditions and its importance in today's practice.

  18. Relative Permeability of Fractured Rock

    SciTech Connect

    Mark D. Habana

    2002-06-30

    Contemporary understanding of multiphase flow through fractures is limited. Different studies using synthetic fractures and various fluids have yielded different relative permeability-saturation relations. This study aimed to extend the understanding of multiphase flow by conducting nitrogen-water relative permeability experiments on a naturally-fractured rock from The Geysers geothermal field. The steady-state approach was used. However, steady state was achieved only at the endpoint saturations. Several difficulties were encountered that are attributed to phase interference and changes in fracture aperture and surface roughness, along with fracture propagation/initiation. Absolute permeabilities were determined using nitrogen and water. The permeability values obtained change with the number of load cycles. Determining the absolute permeability of a core is especially important in a fractured rock. The rock may change as asperities are destroyed and fractures propagate or st rain harden as the net stresses vary. Pressure spikes occurred in water a solute permeability experiments. Conceptual models of an elastic fracture network can explain the pressure spike behavior. At the endpoint saturations the water relative permeabilities obtained are much less than the nitrogen gas relative permeabilities. Saturations were determined by weighing and by resistivity calculations. The resistivity-saturation relationship developed for the core gave saturation values that differ by 5% from the value determined by weighing. Further work is required to complete the relative permeability curve. The steady-state experimental approach encountered difficulties due to phase interference and fracture change. Steady state may not be reached until an impractical length of time. Thus, unsteady-state methods should be pursued. In unsteady-state experiments the challenge will be in quantifying rock fracture change in addition to fluid flow changes.

  19. Scaling relations for magnetic nanoparticles

    NASA Astrophysics Data System (ADS)

    Landeros, P.; Escrig, J.; Altbir, D.; Laroze, D.; D'Albuquerque E Castro, J.; Vargas, P.

    2005-03-01

    A detailed investigation of the scaling relations recently proposed [J. d’Albuquerque e Castro, D. Altbir, J. C. Retamal, and P. Vargas, Phys. Rev. Lett. 88, 237202 (2002)] to study the magnetic properties of nanoparticles is presented. Analytical expressions for the total energy of three characteristic internal configurations of the particles are obtained, in terms of which the behavior of the magnetic phase diagram for those particles upon scaling of the exchange interaction is discussed. The exponent η in scaling relations is shown to be dependent on the geometry of the vortex core, and results for specific cases are presented.

  20. Results from Numerical General Relativity

    NASA Technical Reports Server (NTRS)

    Baker, John G.

    2011-01-01

    For several years numerical simulations have been revealing the details of general relativity's predictions for the dynamical interactions of merging black holes. I will review what has been learned of the rich phenomenology of these mergers and the resulting gravitational wave signatures. These wave forms provide a potentially observable record of the powerful astronomical events, a central target of gravitational wave astronomy. Asymmetric radiation can produce a thrust on the system which may accelerate the single black hole resulting from the merger to high relative velocity.

  1. Quasilocal Hamiltonians in general relativity

    SciTech Connect

    Anderson, Michael T.

    2010-10-15

    We analyze the definition of quasilocal energy in general relativity based on a Hamiltonian analysis of the Einstein-Hilbert action initiated by Brown-York. The role of the constraint equations, in particular, the Hamiltonian constraint on the timelike boundary, neglected in previous studies, is emphasized here. We argue that a consistent definition of quasilocal energy in general relativity requires, at a minimum, a framework based on the (currently unknown) geometric well-posedness of the initial boundary value problem for the Einstein equations.

  2. Children's Intergroup Relations and Attitudes.

    PubMed

    Bigler, Rebecca S; Rohrbach, John M; Sanchez, Kiara L

    The existence of warm, intimate, supportive, and egalitarian relationships between members of differing social outgroups is likely, at the societal level, to facilitate cooperation and cohesion, and at the individual level, to promote positive social, educational, and occupational outcomes. The developmental pathway from intergroup contact to intergroup attitudes as it operates among children is not, however, well understood. In our chapter, we review and integrate selected social and developmental science related to intergroup relations and attitudes with the goal of proposing a conceptual model of the pathway from intergroup contact to positive intergroup attitudes among youth. © 2016 Elsevier Inc. All rights reserved.

  3. [Age-related macular degeneration].

    PubMed

    Budzinskaia, M V

    2014-01-01

    The review provides an update on the pathogenesis and new treatment modalities for neovascular age-related macular degeneration (AMD). The impact of polymorphism in particular genes, including complement factor H (CFH), age-related maculopathy susceptibility 2 (ARMS2/LOC387715), and serine peptidase (HTRA1), on AMD development is discussed. Clinical presentations of different forms of exudative AMD, that is classic, occult, or more often mixed choroidal neovascularization, retinal angiomatous proliferation, and choroidal polypoidal vasculopathy, are described. Particular attention is paid to the results of recent clinical trials and safety issues around the therapy.

  4. Gravitation. [Book on general relativity

    NASA Technical Reports Server (NTRS)

    Misner, C. W.; Thorne, K. S.; Wheeler, J. A.

    1973-01-01

    This textbook on gravitation physics (Einstein's general relativity or geometrodynamics) is designed for a rigorous full-year course at the graduate level. The material is presented in two parallel tracks in an attempt to divide key physical ideas from more complex enrichment material to be selected at the discretion of the reader or teacher. The full book is intended to provide competence relative to the laws of physics in flat space-time, Einstein's geometric framework for physics, applications with pulsars and neutron stars, cosmology, the Schwarzschild geometry and gravitational collapse, gravitational waves, experimental tests of Einstein's theory, and mathematical concepts of differential geometry.

  5. Gravitation. [Book on general relativity

    NASA Technical Reports Server (NTRS)

    Misner, C. W.; Thorne, K. S.; Wheeler, J. A.

    1973-01-01

    This textbook on gravitation physics (Einstein's general relativity or geometrodynamics) is designed for a rigorous full-year course at the graduate level. The material is presented in two parallel tracks in an attempt to divide key physical ideas from more complex enrichment material to be selected at the discretion of the reader or teacher. The full book is intended to provide competence relative to the laws of physics in flat space-time, Einstein's geometric framework for physics, applications with pulsars and neutron stars, cosmology, the Schwarzschild geometry and gravitational collapse, gravitational waves, experimental tests of Einstein's theory, and mathematical concepts of differential geometry.

  6. The biomedical discourse relation bank

    PubMed Central

    2011-01-01

    Background Identification of discourse relations, such as causal and contrastive relations, between situations mentioned in text is an important task for biomedical text-mining. A biomedical text corpus annotated with discourse relations would be very useful for developing and evaluating methods for biomedical discourse processing. However, little effort has been made to develop such an annotated resource. Results We have developed the Biomedical Discourse Relation Bank (BioDRB), in which we have annotated explicit and implicit discourse relations in 24 open-access full-text biomedical articles from the GENIA corpus. Guidelines for the annotation were adapted from the Penn Discourse TreeBank (PDTB), which has discourse relations annotated over open-domain news articles. We introduced new conventions and modifications to the sense classification. We report reliable inter-annotator agreement of over 80% for all sub-tasks. Experiments for identifying the sense of explicit discourse connectives show the connective itself as a highly reliable indicator for coarse sense classification (accuracy 90.9% and F1 score 0.89). These results are comparable to results obtained with the same classifier on the PDTB data. With more refined sense classification, there is degradation in performance (accuracy 69.2% and F1 score 0.28), mainly due to sparsity in the data. The size of the corpus was found to be sufficient for identifying the sense of explicit connectives, with classifier performance stabilizing at about 1900 training instances. Finally, the classifier performs poorly when trained on PDTB and tested on BioDRB (accuracy 54.5% and F1 score 0.57). Conclusion Our work shows that discourse relations can be reliably annotated in biomedical text. Coarse sense disambiguation of explicit connectives can be done with high reliability by using just the connective as a feature, but more refined sense classification requires either richer features or more annotated data. The poor

  7. New View of Relativity Theory

    NASA Astrophysics Data System (ADS)

    Martini, Luiz Cesar

    2014-04-01

    This article results from Introducing the Dimensional Continuous Space-Time Theory that was published in reference 1. The Dimensional Continuous Space-Time Theory shows a series of facts relative to matter, energy, space and concludes that empty space is inelastic, absolutely stationary, motionless, perpetual, without possibility of deformation neither can it be destroyed or created. A elementary cell of empty space or a certain amount of empty space can be occupied by any quantity of energy or matter without any alteration or deformation. As a consequence of these properties and being a integral part of the theory, the principles of Relativity Theory must be changed to become simple and intuitive.

  8. BOOK REVIEW An Introduction to Relativity An Introduction to Relativity

    NASA Astrophysics Data System (ADS)

    Dray, Tevian

    2011-02-01

    As is clearly stated in the preface, this book is a fresh rewrite of Narlikar's published lecture notes [1] from 1978, resulting in a unique historical perspective with a modernized presentation. For workers in the field, this book provides a fascinating glimpse of the state of the art 30 years ago, but there are some inevitable idiosyncracies which might make it less useful to the beginner, especially those attempting to read this book on their own. The author is well-known for his informal, readable style, and this book is no exception. Although the treatment is overly algebraic from this reviewer's modern perspective, that is not necessarily a drawback, and does accurately reflect contemporary usage. This text is a `math first' approach to relativity, presenting the tensor calculus first, and the physics second. Not surprisingly given the author's interests, there is an emphasis on cosmological applications. After a quick review of special relativity, the book jumps right in with a fairly standard introduction to tensor calculus, followed almost immediately by chapters on Einstein's equations, the Schwarzschild solution, experimental tests, relativistic astrophysics, and black holes, followed in turn by several chapters on cosmology. This new text is a faithful adaptation of the earlier text, with essentially identical tables of contents. In fact, the only notable differences are the opening chapter summarizing special relativity, a brief new chapter on gravitational radiation, and the exclusion of a lecture on the Steady State Theory — and that material appears separately in the author's cosmology text [2]. Some of the material, such as the excellent chapter on symmetries, is largely identical to the original, but most of the material has been extensively rewritten, with most of the changes being to presentation, rather than content. There are some seldom seen gems in this book, such as the aforementioned discussion of symmetries, the extensive discussion of

  9. Understanding community-forest relations.

    Treesearch

    Linda E. Kruger

    2003-01-01

    Improved understanding of the relationships between human communities and forests is necessary to understanding how alternative forest management policies and practices can affect different communities. This knowledge also enhances our ability to formulate plans that are responsive to the needs and concerns of local communities, thus reducing polarization and related...

  10. FLASH LIDAR Based Relative Navigation

    NASA Technical Reports Server (NTRS)

    Brazzel, Jack; Clark, Fred; Milenkovic, Zoran

    2014-01-01

    Relative navigation remains the most challenging part of spacecraft rendezvous and docking. In recent years, flash LIDARs, have been increasingly selected as the go-to sensors for proximity operations and docking. Flash LIDARS are generally lighter and require less power that scanning Lidars. Flash LIDARs do not have moving parts, and they are capable of tracking multiple targets as well as generating a 3D map of a given target. However, there are some significant drawbacks of Flash Lidars that must be resolved if their use is to be of long-term significance. Overcoming the challenges of Flash LIDARs for navigation-namely, low technology readiness level, lack of historical performance data, target identification, existence of false positives, and performance of vision processing algorithms as intermediaries between the raw sensor data and the Kalman filter-requires a world-class testing facility, such as the Lockheed Martin Space Operations Simulation Center (SOSC). Ground-based testing is a critical step for maturing the next-generation flash LIDAR-based spacecraft relative navigation. This paper will focus on the tests of an integrated relative navigation system conducted at the SOSC in January 2014. The intent of the tests was to characterize and then improve the performance of relative navigation, while addressing many of the flash LIDAR challenges mentioned above. A section on navigation performance and future recommendation completes the discussion.

  11. Public Relations for Physical Education

    ERIC Educational Resources Information Center

    Irwin, Carol C.; Irwin, Richard L.

    2004-01-01

    In today's highly competitive world, more than just a good product is required for a business to survive. A sound public relations campaign is needed to generate publicity and extol the product's benefits and the same can be said of a physical education (PE) program. When viewed from a business perspective, the greatest threat to physical…

  12. International Relations: Library Instruction Unit.

    ERIC Educational Resources Information Center

    Hall, Cathie

    In support of the United States Naval Academy's program in international relations, library reference staff developed an instruction unit featuring appropriate research guides and a videotape produced at the Naval Academy Educational Resource Center. The videotape illustrates a sample search strategy and then highlights the use of four basic…

  13. The Principal and Human Relations.

    ERIC Educational Resources Information Center

    North Carolina State Dept. of Public Instruction, Raleigh. Div. of Human Relations.

    This booklet offers general guidelines and recommendations on how to develop and exercise the interpersonal skills required of a successful school principal. Attention is devoted to the basic principles of effective communication and personal interaction, with emphasis on the principal's relations with students, teachers, and members of the…

  14. Children's Social Relations Interview Scale.

    ERIC Educational Resources Information Center

    Volpe, Richard

    The Children's Social Relations Interview Scale (CSRIS) was developed to assess the role expectations and role behaviors associated with physical disabilities, namely low status and independence. Three traits are assessed: succorance, the seeking of help and support; restraint, physical and social limitation and circumscription by others; and…

  15. Public Relations for Gifted Children.

    ERIC Educational Resources Information Center

    Kiger, Leslie

    1998-01-01

    Discusses the importance of public relations for gifted education and the role of teachers, parents, and students in that area. Provides six strategies for becoming a successful advocate of gifted programs, and describes methods for contacting and involving newspapers, magazines, and television. (CR)

  16. Public Relations in Special Libraries.

    ERIC Educational Resources Information Center

    Rutkowski, Hollace Ann; And Others

    1991-01-01

    This theme issue includes 11 articles on public relations (PR) in special libraries. Highlights include PR at the Special Libraries Association (SLA); sources for marketing research for libraries; developing a library image; sample PR releases; brand strategies for libraries; case studies; publicizing a consortium; and a bibliography of pertinent…

  17. Wild Vietnamese relatives of blueberries

    USDA-ARS?s Scientific Manuscript database

    rom 25 October to 14 November 2015, wild relatives of cultivated blueberry, Vaccinium corymbosum, were collected during a Vietnamese-US cooperative expedition in Northern Vietnam. The exploration involved representatives of the Plant Resources Center, Vietnam Academy of Agricultural Sciences, in Han...

  18. Soccer-Related Eye Injuries.

    ERIC Educational Resources Information Center

    Orlando, Richard G.

    1988-01-01

    A review of medical charts of 13 youths (age 8-15) with soccer-related eye injuries identified as causes: a head butt, kicks, the ball. Risks can be lessened by use of polycarbonate eyeguards, properly inflated balls, adequate conditioning and practice before scrimmages, a moderate and balanced practice/playing schedule and good sportsmanship.…

  19. Peplau's theory of interpersonal relations.

    PubMed

    Peplau, H E

    1997-01-01

    Interpersonal competencies of nurses are key to assisting patients in the work necessary for regaining health and well-being. Peplau's theory of interpersonal relations is detailed, and examples are given of the three phases which occur in developing nurse-patient relationships, along with associated challenges.

  20. Genetics in Relation to Biology.

    ERIC Educational Resources Information Center

    Stewart, J. Bird

    1987-01-01

    Claims that most instruction dealing with genetics is limited to sex education and personal hygiene. Suggests that the biology curriculum should begin to deal with other issues related to genetics, including genetic normality, prenatal diagnoses, race, and intelligence. Predicts these topics will begin to appear in British examination programs.…

  1. Transportation. The Neglected Related Service.

    ERIC Educational Resources Information Center

    Carter, Mary; And Others

    This monograph presents a five-module staff training program used to improve the related service of transportation of children with disabilities in Union County, North Carolina. Each module takes from 4 to more than 8 hours of training and bus drivers and transportation safety assistants with current certificates in all five modules receive a…

  2. Steam-water relative permeability

    SciTech Connect

    Ambusso, W.; Satik, C.; Home, R.N.

    1997-12-31

    A set of relative permeability relations for simultaneous flow of steam and water in porous media have been measured in steady state experiments conducted under the conditions that eliminate most errors associated with saturation and pressure measurements. These relations show that the relative permeabilities for steam-water flow in porous media vary approximately linearly with saturation. This departure from the nitrogen/water behavior indicates that there are fundamental differences between steam/water and nitrogen/water flows. The saturations in these experiments were measured by using a high resolution X-ray computer tomography (CT) scanner. In addition the pressure gradients were obtained from the measurements of liquid phase pressure over the portions with flat saturation profiles. These two aspects constitute a major improvement in the experimental method compared to those used in the past. Comparison of the saturation profiles measured by the X-ray CT scanner during the experiments shows a good agreement with those predicted by numerical simulations. To obtain results that are applicable to general flow of steam and water in porous media similar experiments will be conducted at higher temperature and with porous rocks of different wetting characteristics and porosity distribution.

  3. Stroke-Related Translational Research

    PubMed Central

    Caplan, Louis R.; Arenillas, Juan; Cramer, Steven C.; Joutel, Anne; Lo, Eng H.; Meschia, James; Savitz, Sean; Tournier-Lasserve, Elizabeth

    2013-01-01

    Stroke-related translational research is multifaceted. Herein, we highlight genome-wide association studies and genetic studies of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, COL4A1 mutations, and cerebral cavernous malformations; advances in molecular biology and biomarkers; newer brain imaging research; and recovery from stroke emphasizing cell-based and other rehabilitative modalities. PMID:21555605

  4. Banking and Related Financial Services.

    ERIC Educational Resources Information Center

    Snyder, Les

    This curriculum guide lists competencies for banking and related financial services occupations, validated by educators and experienced persons in the field in Arizona. The competencies describe the skills required of entry-level workers. The guide is in two parts with one focusing on teller or teller-like positions, and the other focusing on…

  5. Effective Public Relations in Extension.

    ERIC Educational Resources Information Center

    Hogan, Mike

    1994-01-01

    Public relations efforts of the Carroll County (Ohio) extension office included periodic reports to legislators, a toll-free number distributed on refrigerator magnets, annual calendar/report to the public, newspaper supplements, and town meetings. Long-term effects were a 116% increase in funding, used to upgrade staff, programs, and…

  6. Beaches. Ocean Related Curriculum Activities.

    ERIC Educational Resources Information Center

    Marrett, Andrea

    The ocean affects all of our lives. Therefore, awareness of and information about the interconnections between humans and oceans are prerequisites to making sound decisions for the future. Project ORCA (Ocean Related Curriculum Activities) has developed interdisciplinary curriculum materials designed to meet the needs of students and teachers…

  7. Mathematical Caring Relations in Action

    ERIC Educational Resources Information Center

    Hackenberg, Amy J.

    2010-01-01

    In a small-scale, 8-month teaching experiment, the author aimed to establish and maintain "mathematical caring relations" (MCRs) (Hackenberg, 2005c) with 4 6th-grade students. From a teacher's perspective, establishing MCRs involves holding the work of orchestrating mathematical learning for students together with an orientation to…

  8. Relational Spirituality and Social Caregiving

    ERIC Educational Resources Information Center

    Faver, Catherine A.

    2004-01-01

    Relational spirituality suggests that strengthening one's relatedness to other people and to sources of meaning beyond self-interest produces joy and vitality, which sustain the capacity to care. This perspective informs a qualitative study of 50 female services providers and social reformers. The interviews revealed that the women's caregiving…

  9. Whales. Ocean Related Curriculum Activities.

    ERIC Educational Resources Information Center

    Jones, Claire

    The ocean affects all of our lives. Therefore, awareness of and information about the interconnections between humans and oceans are prerequisites to making sound decisions for the future. Project ORCA (Ocean Related Curriculum Activities) has developed interdisciplinary curriculum materials designed to meet the needs of students and teachers…

  10. Verifying the Theory of Relativity

    ERIC Educational Resources Information Center

    Chandrasekhar, S.

    1975-01-01

    This article, based on a talk the author gave to the 'Innominates', an interdisciplinary faculty group at the University of Chicago, focuses on events of the years surrounding the British Expeditions to Brazil and West Africa in 1919 that led to the confirmation of Einstein's theory of relativity. (BT)

  11. Dimensional Analysis and General Relativity

    ERIC Educational Resources Information Center

    Lovatt, Ian

    2009-01-01

    Newton's law of gravitation is a central topic in the first-year physics curriculum. A lecturer can go beyond the physical details and use the history of gravitation to discuss the development of scientific ideas; unfortunately, the most recent chapter in this history, general relativity, is not covered in first-year courses. This paper discusses…

  12. Testing general relativity on accelerators

    DOE PAGES

    Kalaydzhyan, Tigran

    2015-09-07

    Within the general theory of relativity, the curvature of spacetime is related to the energy and momentum of the present matter and radiation. One of the more specific predictions of general relativity is the deflection of light and particle trajectories in the gravitational field of massive objects. Bending angles for electromagnetic waves and light in particular were measured with a high precision. However, the effect of gravity on relativistic massive particles was never studied experimentally. Here we propose and analyze experiments devoted to that purpose. We demonstrate a high sensitivity of the laser Compton scattering at high energy accelerators tomore » the effects of gravity. The main observable – maximal energy of the scattered photons – would experience a significant shift in the ambient gravitational field even for otherwise negligible violation of the equivalence principle. In conclusion, we confirm predictions of general relativity for ultrarelativistic electrons of energy of tens of GeV at a current level of resolution and expect our work to be a starting point of further high-precision studies on current and future accelerators, such as PETRA, European XFEL and ILC.« less

  13. CAREERS RELATED TO INDUSTRIAL EDUCATION.

    ERIC Educational Resources Information Center

    ELLIS, BETTY W.

    THE GUIDANCE FORMAT FOR EACH OCCUPATION INCLUDES FIVE MAJOR TOPICS--PERSONAL REQUIREMENTS, EDUCATION AND TRAINING OPPORTUNITIES IN JUNIOR AND SENIOR HIGH SCHOOL, OPPORTUNITIES BEYOND HIGH SCHOOL, ADVANCEMENT AND OUTLOOK, AND RELATED AND SPECIALIST OCCUPATIONS. THE OUTLINES ARE INTENDED TO HELP THE STUDENT IDENTIFY AND APPRAISE HIS OWN PATTERN OF…

  14. Medicating Relational Trauma in Youth

    ERIC Educational Resources Information Center

    Foltz, Robert

    2008-01-01

    Children who have experienced relational trauma present a host of problems and are often diagnosed with psychiatric disorders and then medicated. But there is evidence that commonly used drugs interfere with oxytocin or vasopressin, the human trust and bonding hormones. Thus, psychotropic drugs may impair interpersonal relationships and impede…

  15. Race Relations in Western Nebraska.

    ERIC Educational Resources Information Center

    Jenkins, Melvin L.

    This report is derived from a community forum held in Scottsbluff (Nebraska) on April 28-29, 1993, by the Nebraska Advisory Committee to the United States Commission on Civil Rights. Views on race relations in selected areas of western Nebraska were expressed by concerned citizens; community leaders; government officials (federal, state, and…

  16. Leading in the Relational Space

    ERIC Educational Resources Information Center

    Silverberg, Ruth Powers

    2003-01-01

    This article describes the application and outcomes of using a shared framework and vocabulary for understanding learning, the Let Me Learn Process, to create a relational space necessary for constructivist learning. Students in an urban leadership preparation program learned about their own and each other's unique learning patterns and…

  17. Intergroup Relations Curriculum. Program Report.

    ERIC Educational Resources Information Center

    Bye, Margaret

    The description provides information on the elementary social studies one-year program designed for use as the basis of curriculum or as a supplement to an existing program. A long term goal is for students to develop democratic human relations. Terminal objectives include affective and cognitive developments, helping students to understand the…

  18. Curriculum Vitae and Related Letters.

    ERIC Educational Resources Information Center

    Peterson, Sharyl Bender

    This booklet, which was developed by a college career center, explains the purpose of and procedures for writing curriculum vitae (CV) and related letters. The following topics are covered: when a CV is appropriate, points to consider when writing a CV, items usually included, possible sections to include in a CV, and steps in writing cover…

  19. Soccer-Related Eye Injuries.

    ERIC Educational Resources Information Center

    Orlando, Richard G.

    1988-01-01

    A review of medical charts of 13 youths (age 8-15) with soccer-related eye injuries identified as causes: a head butt, kicks, the ball. Risks can be lessened by use of polycarbonate eyeguards, properly inflated balls, adequate conditioning and practice before scrimmages, a moderate and balanced practice/playing schedule and good sportsmanship.…

  20. Human Relations Class. A Syllabus.

    ERIC Educational Resources Information Center

    Guillen, Mary A.

    A junior high level human relations class develops human interaction and oral communication skills. A week-by-week syllabus contains the following components: introduction of the students to each other and to the principles of body language, transactional analysis, and group interaction; behavior contracts; group dynamics topics and exercises;…

  1. Water Relations of White Alder

    Treesearch

    Virginia I. Dains

    1989-01-01

    White alder (Alnus rhombifolia) is a potentially valuable indicator of water stress along California's waterways. Measurements of stomatal conductance, water potential and tissue water relations in conjunction with growth and morphological studies give evidence for the sensitivity of this species to changes in water availability. Potted...

  2. U.S.-Japanese Relations.

    ERIC Educational Resources Information Center

    Schlene, Vickie J.

    1991-01-01

    Presents a sampling of items from the ERIC database on the interactions between Japan and the United States. Includes items on diplomatic and intercultural relations, historical trends, technology, and business competition. Offers information on using the database and obtaining materials. (DK)

  3. U.S.-Japanese Relations.

    ERIC Educational Resources Information Center

    McCannon, Bob

    1993-01-01

    Disagrees with the tone and conclusions of the special section on United States-Japan relations in the November-December, 1991 issue. Contends that the national interests of the United States were ignored to avoid "Japan Bashing" over trade and other economic issues. Calls for a more realistic view of Japan's trade policies toward the…

  4. Relative Positions of Distant Spacecraft

    NASA Image and Video Library

    2011-04-29

    This graphic shows the relative positions of NASA most distant spacecraft in early 2011, looking at the solar system from the side. Voyager 1 is the most distant spacecraft, 10.9 billion miles away from the sun at a northward angle.

  5. Dimensional Analysis and General Relativity

    ERIC Educational Resources Information Center

    Lovatt, Ian

    2009-01-01

    Newton's law of gravitation is a central topic in the first-year physics curriculum. A lecturer can go beyond the physical details and use the history of gravitation to discuss the development of scientific ideas; unfortunately, the most recent chapter in this history, general relativity, is not covered in first-year courses. This paper discusses…

  6. Internship Practices in Public Relations.

    ERIC Educational Resources Information Center

    Kendall, Robert

    1980-01-01

    Surveys the range of job experiences available to journalism students and suggests how these internship programs could be standardized. Available from Public Relations Review, Communication Research Associates, Inc., 7338 Baltimore Blvd., Suite 101A, College Park, MD 20740; one year, $15.00; two years $27.00; three years $39.00. (JMF)

  7. Supervisor Training and Industrial Relations.

    ERIC Educational Resources Information Center

    Dixon, R.

    1980-01-01

    The supervisor's traditional role of authority and leadership has changed, accompanied by a gradual diminution of his/her status. Training in industrial relations would help the supervisor understand his/her new role and reestablish his/her self-esteem. The process of training for supervisors must assume priority within the activities of the…

  8. Behavioral Research in Industrial Relations.

    ERIC Educational Resources Information Center

    Lewin, David; Feuille, Peter

    1983-01-01

    This paper examines and assesses the behavioral content of industrial relations research in a variety of social science disciplines. The authors compare economic research on the wage and productivity consequences of unionism with psychological research on worker attitudes toward unions, sociological research on the negotiation process and conflict…

  9. Apprenticeship Related and Supplemental Instruction.

    ERIC Educational Resources Information Center

    Farland, Ronnald; Anderson, Bill

    An overview is provided of apprenticeship programs offered by the California community colleges. First, the report describes apprenticeships, indicating that modern programs include school-based supplemental instruction to ensure that apprentices possess skills and knowledge beyond just the manual tasks related to the occupation that are learned…

  10. Five Paradigms of Ethnic Relations.

    ERIC Educational Resources Information Center

    Janzen, Rod

    1994-01-01

    Contends that a major focus of contemporary U.S. education is the nature and character of interethnic relationships. Discusses five models of ethnic relations: (1) traditional Eurocentric Racism; (2) Melting Pot Assimilationism; (3) Ethnic Nationalism; (4) Globalism; and (5) Centered Pluralism. (CFR)

  11. Farmworker Health-Related Bibliography.

    ERIC Educational Resources Information Center

    National Association of Farmworker Organizations, Washington, DC.

    Documents pertaining to migrant and seasonal farmworker health comprise this bibliography of over 300 entries, nearly 100 of them annotated. The purpose of the bibliography is to provide health groups within the National Association of Farmworker Organizations with literature which may guide further research related to the provision of health care…

  12. [Projective identification in human relations].

    PubMed

    Göka, Erol; Yüksel, Fatih Volkan; Göral, F Sevinç

    2006-01-01

    Melanie Klein, one of the pioneers of Object Relations Theory, first defined "projective identification", which is regarded as one of the most efficacious psychoanalytic concepts after the discovery of the "unconscious". Examination of the literature on "projective identification" shows that there are various perspectives and theories suggesting different uses of this concept. Some clinicians argue that projective identification is a primitive defense mechanism observed in severe psychopathologies like psychotic disorder and borderline personality disorder, where the intra-psychic structure has been damaged severely. Others suggest it to be an indispensable part of the transference and counter-transference between the therapist and the patient during psychotherapy and it can be used as a treatment material in the therapy by a skillful therapist. The latter group expands the use of the concept through normal daily relationships by stating that projective identification is one type of communication and part of the main human relation mechanism operating in all close relationships. Therefore, they suggest that projective identification has benign forms experienced in human relations as well as malign forms seen in psychopathologies. Thus, discussions about the definition of the concept appear complex. In order to clarify and overcome the complexity of the concept, Melanie Klein's and other most important subsequent approaches are discussed in this review article. Thereby, the article aims to explain its important function in understanding the psychopathologies, psychotherapeutic relationships and different areas of normal human relations.

  13. Relational Communication in Intercultural Couples

    ERIC Educational Resources Information Center

    Cools, Carine A.

    2006-01-01

    This qualitative study utilises the relational dialectics of Baxter and Montgomery (1996) to examine the relationship communication of six heterosexual intercultural couples living in Finland. In this study, I attempt to answer the following questions: what cultural issues are relevant in the couples' relationship? What intercultural relational…

  14. General Relativity: Geometry Meets Physics

    ERIC Educational Resources Information Center

    Thomsen, Dietrick E.

    1975-01-01

    Observing the relationship of general relativity and the geometry of space-time, the author questions whether the rest of physics has geometrical explanations. As a partial answer he discusses current research on subatomic particles employing geometric transformations, and cites the existence of geometrical definitions of physical quantities such…

  15. Public Relations for Rehabilitation Facilities.

    ERIC Educational Resources Information Center

    Gilbertson, Alan D.

    The goal of this publication is to provide rehabilitation facilities with a guide to improve their image in the community and increase contract sales, job placements, donations, and client numbers. It is intended (1) to assist them in identifying individuals or groups that facilities should be trying to reach with their public relations efforts…

  16. Verifying the Theory of Relativity

    ERIC Educational Resources Information Center

    Chandrasekhar, S.

    1975-01-01

    This article, based on a talk the author gave to the 'Innominates', an interdisciplinary faculty group at the University of Chicago, focuses on events of the years surrounding the British Expeditions to Brazil and West Africa in 1919 that led to the confirmation of Einstein's theory of relativity. (BT)

  17. Apprenticeship Related and Supplemental Instruction.

    ERIC Educational Resources Information Center

    Farland, Ronnald; Anderson, Bill

    An overview is provided of apprenticeship programs offered by the California community colleges. First, the report describes apprenticeships, indicating that modern programs include school-based supplemental instruction to ensure that apprentices possess skills and knowledge beyond just the manual tasks related to the occupation that are learned…

  18. Thinking Relationally about Studying "Up"

    ERIC Educational Resources Information Center

    Stich, Amy E.; Colyar, Julia E.

    2015-01-01

    In this paper, the authors argue that despite a resurgence of elite studies, the majority of existing scholarship works to reify and legitimize social inequality through its language and method. In particular, the authors utilize Pierre Bourdieu's concept of relational thinking to review and critique contemporary research on elite education and…

  19. Two myths about special relativity

    NASA Astrophysics Data System (ADS)

    Baierlein, Ralph

    2006-03-01

    Misconceptions about special relativity theory are common and pernicious. I address two such misconceptions: the low-speed behavior of the Lorentz transformation and the meaning of the phrase, "the constancy of the speed of light," as Einstein used it in 1905.

  20. Medicating Relational Trauma in Youth

    ERIC Educational Resources Information Center

    Foltz, Robert

    2008-01-01

    Children who have experienced relational trauma present a host of problems and are often diagnosed with psychiatric disorders and then medicated. But there is evidence that commonly used drugs interfere with oxytocin or vasopressin, the human trust and bonding hormones. Thus, psychotropic drugs may impair interpersonal relationships and impede…

  1. Public Relations in Special Libraries.

    ERIC Educational Resources Information Center

    Rutkowski, Hollace Ann; And Others

    1991-01-01

    This theme issue includes 11 articles on public relations (PR) in special libraries. Highlights include PR at the Special Libraries Association (SLA); sources for marketing research for libraries; developing a library image; sample PR releases; brand strategies for libraries; case studies; publicizing a consortium; and a bibliography of pertinent…

  2. General Relativity: Geometry Meets Physics

    ERIC Educational Resources Information Center

    Thomsen, Dietrick E.

    1975-01-01

    Observing the relationship of general relativity and the geometry of space-time, the author questions whether the rest of physics has geometrical explanations. As a partial answer he discusses current research on subatomic particles employing geometric transformations, and cites the existence of geometrical definitions of physical quantities such…

  3. Blog Consumption and International Relations

    ERIC Educational Resources Information Center

    Allen, Michael A.

    2016-01-01

    International relations professors have sought to incorporate current events into their curriculum through various mechanisms. A traditional way to incorporate the news into the classroom is to have students either subscribe and read a particular newspaper or watch the nightly news and hold them responsible for that information. However, with the…

  4. Waterbirds. Ocean Related Curriculum Activities.

    ERIC Educational Resources Information Center

    Russell, Barbara

    The ocean affects all of our lives. Therefore, awareness of and information about the interconnections between humans and oceans are prerequisites to making sound decisions for the future. Project ORCA (Ocean Related Curriculum Activities) has developed interdisciplinary curriculum materials designed to meet the needs of students and teachers…

  5. Eight Great Community Relations Ideas.

    ERIC Educational Resources Information Center

    Bete, Tim

    1998-01-01

    Presents eight winners of School Planning & Management's Community Relations Contest that produced ideas that other school districts can use to strengthen community/school coexistence. Papers cover such topics as improving communication between stakeholders, connecting with parents, and keeping the community informed during construction projects.…

  6. Internship Practices in Public Relations.

    ERIC Educational Resources Information Center

    Kendall, Robert

    1980-01-01

    Surveys the range of job experiences available to journalism students and suggests how these internship programs could be standardized. Available from Public Relations Review, Communication Research Associates, Inc., 7338 Baltimore Blvd., Suite 101A, College Park, MD 20740; one year, $15.00; two years $27.00; three years $39.00. (JMF)

  7. Special Relations in Automated Deduction,

    DTIC Science & Technology

    1985-05-01

    ABSTRACT Two deduction rules are introduced to give streamlined treatment to relations of special importance in an automated theorem-proving system...a+1,a,b). We may also write e(tl, t 2 , • • , t,e)’’ to indicate that precisely k or I replacements are made in the expressione (Sl ,52, ... , 1 0

  8. RESEARCH BULLETIN ON INTERGROUP RELATIONS.

    ERIC Educational Resources Information Center

    ROSE, PETER I.

    IN APRIL 1961, QUESTIONNAIRES WERE MAILED TO MEMBERS OF MANY ACADEMIC AND PROFESSIONAL ORGANIZATIONS TO DISCOVER RESEARCH IN THE FIELD OF INTERGROUP RELATIONS. APPROXIMATELY 200 PERSONS WROTE OF RESEARCH UNDERTAKEN. ABSTRACTS OF THE REPORTED RESEARCH ARE PRESENTED UNDER ONE OF THREE HEADINGS--COMPLETED, CURRENT, AND PLANNED. COMPLETED AND CURRENT…

  9. Banking and Related Financial Services.

    ERIC Educational Resources Information Center

    Snyder, Les

    This curriculum guide lists competencies for banking and related financial services occupations, validated by educators and experienced persons in the field in Arizona. The competencies describe the skills required of entry-level workers. The guide is in two parts with one focusing on teller or teller-like positions, and the other focusing on…

  10. Be an Alumni Relations Revolutionary.

    ERIC Educational Resources Information Center

    Bickel, Kathy

    2000-01-01

    Presents marketing guru Guy Kawasaki's seven rules for revolutionaries, and examples of alumni relations innovators who are implementing change with cutting-edge programs, services, and business practices. Rules include: "jump curves" (look for new paths); "break down barriers" (challenge roadblocks of ignorance and inertia);…

  11. Blog Consumption and International Relations

    ERIC Educational Resources Information Center

    Allen, Michael A.

    2016-01-01

    International relations professors have sought to incorporate current events into their curriculum through various mechanisms. A traditional way to incorporate the news into the classroom is to have students either subscribe and read a particular newspaper or watch the nightly news and hold them responsible for that information. However, with the…

  12. Thinking Relationally about Studying "Up"

    ERIC Educational Resources Information Center

    Stich, Amy E.; Colyar, Julia E.

    2015-01-01

    In this paper, the authors argue that despite a resurgence of elite studies, the majority of existing scholarship works to reify and legitimize social inequality through its language and method. In particular, the authors utilize Pierre Bourdieu's concept of relational thinking to review and critique contemporary research on elite education and…

  13. Enhancing Coach-Media Relations.

    ERIC Educational Resources Information Center

    Staffo, Donald F.

    1989-01-01

    High School and college coaches are offered tips for better coach-media relations. Suggestions are given for making the media's job easier, thus resulting in better coverage. A sample format for a Post-Game Fact Sheet is included. (IAH)

  14. Race Relations in News Magazines.

    ERIC Educational Resources Information Center

    Stroman, Carolyn A.

    A content analysis was made of all issues of "Newsweek,""Time," and "U. S. News and World Report" published during 1978 to identify the picture of race relations that was presented to the public. Among the findings were the following: (1) "Newsweek" gave the most well-rounded coverage, "U. S. News"…

  15. Teaching Special Relativity Without Calculus

    NASA Astrophysics Data System (ADS)

    Ruby, Lawrence

    2009-04-01

    I 2007 many AAPT members received a booklet that is the first chapter of a physics textbook available on a CD. This book espouses the new educational philosophy of teaching special relativity as the first item in the topic of mechanics. Traditionally, special relativity is part of one or more modern physics chapters at the end of the text,2 and very often this material is never utilized due to time constraints. From a logical standpoint, special relativity is important in satellite communications and in cosmology, as well as in modern physics applications such as atomic theory and high-energy physics. The purpose of this paper is to show that the new philosophy can be carried out in a noncalculus physics course, by demonstrating that all of the principal results of special relativity theory can be obtained by simple algebra. To accomplish this, we shall propose alternate derivations for two results that are usually obtained with calculus. Textbooks2 typically obtain the equations for time dilation and for length contraction from simple considerations based on Einstein's second postulate.3 We shall start from this point.

  16. Tides. Ocean Related Curriculum Activities.

    ERIC Educational Resources Information Center

    Marrett, Andrea

    The ocean affects all of our lives. Therefore, awareness of and information about the interconnections between humans and oceans are prerequisites to making sound decisions for the future. Project ORCA (Ocean Related Curriculum Activities) has developed interdisciplinary curriculum materials designed to meet the needs of students and teachers…

  17. A Guide to Press Relations.

    ERIC Educational Resources Information Center

    Fibre Box Association, Chicago, IL.

    Stressing that a positive press-relations program can be extremely helpful to businesses, this publication offers suggestions for establishing press contacts, preparing press releases, holding press conferences, illustrating a story, preparing materials for use in radio and television broadcasts, and developing policies to be followed in emergency…

  18. Relational Demography in Coaching Dyads

    ERIC Educational Resources Information Center

    Sagas, Michael; Paetzold, Ramona; Ashley, Frank

    2005-01-01

    The decline in the proportion of female head coaches in the intercollegiate ranks is one of the most significant issues in the realm of women's sports today. To extend the body of research that has studied this topic, we investigated the impact relational demographic effects on the work attitudes of coaches, which differs from previous research…

  19. Age-Related Macular Degeneration.

    PubMed

    Mehta, Sonia

    2015-09-01

    Age-related macular degeneration (AMD) is the leading cause of vision loss in the elderly. AMD is diagnosed based on characteristic retinal findings in individuals older than 50. Early detection and treatment are critical in increasing the likelihood of retaining good and functional vision. Copyright © 2015 Elsevier Inc. All rights reserved.

  20. Annual Report--Community Relations.

    ERIC Educational Resources Information Center

    French, Helene; Bryan, Jean

    Rio Hondo College's community relations report provides a review and evaluation of activities for 1977-78, and compares them with activities in the prior two years. These activities have been aimed at keeping the community, the college staff, and students informed and supportive of college programs, classes, and activities and aware of…

  1. Relational Demography in Coaching Dyads

    ERIC Educational Resources Information Center

    Sagas, Michael; Paetzold, Ramona; Ashley, Frank

    2005-01-01

    The decline in the proportion of female head coaches in the intercollegiate ranks is one of the most significant issues in the realm of women's sports today. To extend the body of research that has studied this topic, we investigated the impact relational demographic effects on the work attitudes of coaches, which differs from previous research…

  2. Catheter-related bloodstream infections

    PubMed Central

    Gahlot, Rupam; Nigam, Chaitanya; Kumar, Vikas; Yadav, Ghanshyam; Anupurba, Shampa

    2014-01-01

    Central-venous-catheter-related bloodstream infections (CRBSIs) are an important cause of hospital-acquired infection associated with morbidity, mortality, and cost. Consequences depend on associated organisms, underlying pre-morbid conditions, timeliness, and appropriateness of the treatment/interventions received. We have summarized risk factors, pathogenesis, etiology, diagnosis, and management of CRBSI in this review. PMID:25024944

  3. Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness

    PubMed Central

    2014-01-01

    Background Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Methods Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. Results The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. Conclusions This study shows that initiatives aimed at strengthening physicians’ positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians. PMID:24884491

  4. Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness.

    PubMed

    Trybou, Jeroen; Gemmel, Paul; Van Vaerenbergh, Yves; Annemans, Lieven

    2014-05-21

    Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. This study shows that initiatives aimed at strengthening physicians' positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians.

  5. Statistical Learning is Related to Early Literacy-Related Skills.

    PubMed

    Spencer, Mercedes; Kaschak, Michael P; Jones, John L; Lonigan, Christopher J

    2015-04-01

    It has been demonstrated that statistical learning, or the ability to use statistical information to learn the structure of one's environment, plays a role in young children's acquisition of linguistic knowledge. Although most research on statistical learning has focused on language acquisition processes, such as the segmentation of words from fluent speech and the learning of syntactic structure, some recent studies have explored the extent to which individual differences in statistical learning are related to literacy-relevant knowledge and skills. The present study extends on this literature by investigating the relations between two measures of statistical learning and multiple measures of skills that are critical to the development of literacy-oral language, vocabulary knowledge, and phonological processing-within a single model. Our sample included a total of 553 typically developing children from prekindergarten through second grade. Structural equation modeling revealed that statistical learning accounted for a unique portion of the variance in these literacy-related skills. Practical implications for instruction and assessment are discussed.

  6. Cosmological graviton production in general relativity and related gravity theories

    NASA Astrophysics Data System (ADS)

    de Garcia Maia, Márcio R.; Barrow, John D.

    1994-11-01

    A unified description of graviton creation is given for isotropic cosmological models in general relativity, Brans-Dicke theory, and higher-order gravity theories. The Bogolubov coefficents are derived in general and may be specialized to each of the possible gravity theories. The power spectrum and energy density of relic gravitons surviving a variety of early cosmological scenarios are calculated. The possibility of a nonvacuum initial state is allowed for and the problems of imposing an ultraviolet cutoff are analyzed. We distinguish carefully the effects of gravity waves on super- and subhorizon scales. The associated infrared cutoff, or the ``Allen effect,'' is discussed in detail in order to evaluate the dependence of the graviton energy density on the expansion scale factor. It is found that the nonadiabatic evolution of the graviton energy density can occur even during the radiation era when long-wavelength primoridal gravitational waves enter the horizon. Detailed, multistage, cosmological models are set up involving a sequence of changes in the equation of state for general relativity and Brans-Dicke theories. These examples include models with an inflationary phase. The resulting gravitational-wave background is calculated analytically over the whole frequency range in all cases. The limits imposed by nucleosynthesis of helium-4 are found for general relativity. We also investigate the effects of the presence of a thermal sea of gravitons in the initial state prior to gravitational-wave amplification by the expansion and calculate the effects of the small horizon size upon the thermal distributions.

  7. Statistical Learning is Related to Early Literacy-Related Skills

    PubMed Central

    Spencer, Mercedes; Kaschak, Michael P.; Jones, John L.; Lonigan, Christopher J.

    2015-01-01

    It has been demonstrated that statistical learning, or the ability to use statistical information to learn the structure of one’s environment, plays a role in young children’s acquisition of linguistic knowledge. Although most research on statistical learning has focused on language acquisition processes, such as the segmentation of words from fluent speech and the learning of syntactic structure, some recent studies have explored the extent to which individual differences in statistical learning are related to literacy-relevant knowledge and skills. The present study extends on this literature by investigating the relations between two measures of statistical learning and multiple measures of skills that are critical to the development of literacy—oral language, vocabulary knowledge, and phonological processing—within a single model. Our sample included a total of 553 typically developing children from prekindergarten through second grade. Structural equation modeling revealed that statistical learning accounted for a unique portion of the variance in these literacy-related skills. Practical implications for instruction and assessment are discussed. PMID:26478658

  8. The Concept of General Relativity is not Related to Reality

    NASA Astrophysics Data System (ADS)

    Kotas, Ronald

    2015-04-01

    The concept of general relativity is not related to reality. It is not real or factual Science. GR cannot account for objects falling to earth or for the weight of objects sitting on the earth. The Cavendish demonstration showing the attraction between two masses at right angles to earth's gravity, is not explained by GR. No one can prove the existence of ``space fabric.'' The concept of ``space time'' effects causing gravitational attraction between masses is wrong. Conservation law of energy - momentum does not exist in GR. LIGO fails in detecting ``gravity waves'' because there is no ``space fabric'' to transmit them. The Gravity B Probe data manipulated to show some effects, is not proof of ``space fabric.'' It is Nuclear Quantum Gravitation that provides clear definitive explanation of Gravity and Gravitation. It is harmonious with Newtonian and Quantum Mechanics, and Scientific Logic. Nuclear Quantum Gravitation has 10 clear, Scientific proofs and 21 more good indications. With this theory the Physical Forces are Unified. See: OBSCURANTISM ON EINSTEIN GRAVITATION? http://www.santilli-foundation.org/inconsistencies-gravitation.php and Einstein's Theory of Relativity versus Classical Mechanics, by Paul Marmet http://www.newtonphysics.on.ca/einstein/

  9. Quantum decoherence and interlevel relations

    NASA Astrophysics Data System (ADS)

    Crull, Elise M.

    Quantum decoherence is a dynamical process whereby a system's phase relations become delocalized due to interaction and subsequent entanglement with its environment. This delocalization, or decoherence, forces the quantum system into a state that is apparently classical (or apparently an eigenstate) by prodigiously suppressing features that typically give rise to so-called quantum behavior. Thus it has been frequently proposed by physicists and philosophers alike that decoherence explains the dynamical transition from quantum behavior to classical behavior. Statements like this assume the existence of distinct realms, however, and the present thesis is an exploration of the metaphysical consequences of quantum decoherence motivated by the question of the quantum-to-classical transition and interlevel relations: if there are in-principle "classical" and "quantum" levels, what are the relations between them? And if there are no such levels, what follows? Importantly, the following philosophical investigations are carried out by intentionally leaving aside the measurement problem and concerns about particular interpretations of quantum mechanics. Good philosophical work, it is argued, can be done without adopting a specific interpretational framework and without recourse to the measurement problem. After introducing the physics of decoherence and exploring the four canonical models applied to system-environment interactions, it is argued that, ontologically speaking, there exist no levels. This claim---called the "nontological thesis"---exposes as ill-posed questions regarding the transition from the quantum regime to the classical regime and reveals the inappropriateness of interlevel relations (like reduction, supervenience and emergence) operating within metaphysical frameworks. The nontological thesis has further important consequences regarding intralevel relations: not only are there no meaningful ways to carve the world into levels, but there are no meaningful

  10. Relational ethics and psychosomatic assessment.

    PubMed

    Barbosa, António

    2012-01-01

    The main ethical perspective in the clinical relationship takes into consideration the vulnerability of the clinical condition before threats and risks that can undermine the integrity and dignity of the person. Psychosomatic medicine faces complex cases whose ethical problems cannot only be solved by applying top-down deontological or utilitarian approaches, principlism, which is limited mainly to easing ethical tensions, or a bottom-up approach, the casuistic model, case-based reasoning. In introducing vulnerability as the core of ethical questioning as a principle ontological priority over other principles, relational ethics refers to the appreciation of the responsibility of health professionals through which a health care professional and the patient 'together' can construct more reasonable and prudential courses of action with, for, and by the patient. The model of relational ethics is based on three main aspects, clinically integrated approach, science/philosophy partnership, and deliberative process, that when taken together, form an intermediate model that ensures prudent and reasonable decision-making. The three structural elements and characteristics of relational ethics create and maintain a responsible relationship between the professional and the patient being aware that the mutual vulnerability of health professional and the patient has a moral value and recognizing that their relationship will allow for personal development of each. I conceptualized the model of relational ethics as one that embraces the meta-ethical principles of vulnerability, dignity, responsibility, and respect for autonomy as they are considered by many international declarations or conventions. This model integrates three key polarities: ensure conditions of authenticity, facilitate a process of cooperative mutuality, and promote opportunities for growth and development. Relational ethics can be used to solve major ethical problems in psychosomatic medicine, capacity

  11. Methadone related deaths compared to all prescription related deaths.

    PubMed

    Lev, Roneet; Petro, Sean; Lee, Ariella; Lee, Oren; Lucas, Jonathan; Castillo, Edward M; Egnatios, Jeremy; Vilke, Gary M

    2015-12-01

    Methadone is increasingly implicated in unintentional overdose deaths. Despite major interventions, rates continue to remain high. One primary intervention, Prescription Drug Monitoring Programs (PDMP) are limited in their ability to impact this epidemic due to federal law restricting Opioid Treatment Programs (OTPs) from sharing data to PDMPs, despite being a major source of Methadone dispensing. This retrospective, observational study analyzed all prescription-related deaths occurring in San Diego County during the year 2013 with a specific focus on methadone-related deaths. All patients designated by medical examiner to have died by unintentional prescription were then referenced in the California PDMP, the Controlled Substance Utilization Review and Evaluation System (CURES). As a whole, patients who died had a high number of average prescriptions, 21, and averaged 4.5 different providers, and three different pharmacies. Methadone-related deaths (MRD) accounted for 46 out of the 254 total patient deaths (18.1%). Methadone prescriptions were found in 14 patients with PDMP reports, 10 of who had methadone on toxicology report. Notably, 100% of methadone prescribed by primary care specialists. MRD patients were less likely to have toxicology reports matching PDMP data compared to other related drug deaths (20.6 vs. 61.2%, p<0.0001). Of the 46 methadone deaths, only 10 (29.4%) had prescriptions for methadone recorded in the database. Out of the 51 patients with only one drug recorded at death, methadone was most common (n=12; 23.5%). While all deaths had a notably high rate of chronic prescriptions at death (68.8% compared to 2% for all patients in CURES), there was no significant difference between MRD and other drug-related deaths (73.5 vs. 67.8%, p=0.68, respectively). MRD patients were less likely than other drug patients to have matching PDMP data without any illicit substance or alcohol (14.7 vs. 41.4%, p=0.003, respectively). Methadone is a long

  12. Relation chain based clustering analysis

    NASA Astrophysics Data System (ADS)

    Zhang, Cheng-ning; Zhao, Ming-yang; Luo, Hai-bo

    2011-08-01

    Clustering analysis is currently one of well-developed branches in data mining technology which is supposed to find the hidden structures in the multidimensional space called feature or pattern space. A datum in the space usually possesses a vector form and the elements in the vector represent several specifically selected features. These features are often of efficiency to the problem oriented. Generally, clustering analysis goes into two divisions: one is based on the agglomerative clustering method, and the other one is based on divisive clustering method. The former refers to a bottom-up process which regards each datum as a singleton cluster while the latter refers to a top-down process which regards entire data as a cluster. As the collected literatures, it is noted that the divisive clustering is currently overwhelming both in application and research. Although some famous divisive clustering methods are designed and well developed, clustering problems are still far from being solved. The k - means algorithm is the original divisive clustering method which initially assigns some important index values, such as the clustering number and the initial clustering prototype positions, and that could not be reasonable in some certain occasions. More than the initial problem, the k - means algorithm may also falls into local optimum, clusters in a rigid way and is not available for non-Gaussian distribution. One can see that seeking for a good or natural clustering result, in fact, originates from the one's understanding of the concept of clustering. Thus, the confusion or misunderstanding of the definition of clustering always derives some unsatisfied clustering results. One should consider the definition deeply and seriously. This paper demonstrates the nature of clustering, gives the way of understanding clustering, discusses the methodology of designing a clustering algorithm, and proposes a new clustering method based on relation chains among 2D patterns. In

  13. Observations on related ecological exponents

    PubMed Central

    Southwood, T. Richard E.; May, Robert M.; Sugihara, George

    2006-01-01

    We observe a relationship among three independently derived power laws in ecology: (i) total number of species versus area, (ii) species frequency versus species length, and (iii) maximal body size versus area. Aside from showing how these historically disparate phenomena are connected, we show how recent empirical results relating the maximal body size of top terrestrial vertebrates to the square root of land area conform to a prior theoretical expectation given by two of the above power laws. Of particular interest is the observation that the exponent relating species length to species frequency suggests a dimension for niche space for terrestrial vertebrate assemblages of D ≈ 3/2. This value, along with power law for maximal body size, versus area, gives rise to the canonical species area exponent z ≈ 1/4. PMID:16641099

  14. "imprinting" in General Relativity Tests?

    NASA Astrophysics Data System (ADS)

    Iorio, Lorenzo

    We investigate possible a priori "imprinting" of general relativity itself on spaceraft-based tests of it. We deal with some performed or proposed time-delay ranging experiments in the Sun's gravitational field. The "imprint" of general relativity on the Astronomical Unit and the solar gravitational constant GM⊙, not solved for in the spacecraft-based time-delay test performed so far, may induce an a priori bias of the order of 10-6 in typical solar system ranging experiments aimed to measuring the space curvature PPN parameter γ. It is too small by one order of magnitude to be of concern for the performed Cassini experiment, but it would affect future planned or proposed tests aiming to reach a 10-7-10-9 accuracy in determining γ.

  15. Swearing, euphemisms, and linguistic relativity.

    PubMed

    Bowers, Jeffrey S; Pleydell-Pearce, Christopher W

    2011-01-01

    Participants read aloud swear words, euphemisms of the swear words, and neutral stimuli while their autonomic activity was measured by electrodermal activity. The key finding was that autonomic responses to swear words were larger than to euphemisms and neutral stimuli. It is argued that the heightened response to swear words reflects a form of verbal conditioning in which the phonological form of the word is directly associated with an affective response. Euphemisms are effective because they replace the trigger (the offending word form) by another word form that expresses a similar idea. That is, word forms exert some control on affect and cognition in turn. We relate these findings to the linguistic relativity hypothesis, and suggest a simple mechanistic account of how language may influence thinking in this context.

  16. Age-related eye disease.

    PubMed

    Voleti, Vinod B; Hubschman, Jean-Pierre

    2013-05-01

    As with many organs, compromised function of the eye is accompanied with age and has become increasingly prevalent with the aging population. When decreased visual loss becomes significant, patients' ability to perform activities of daily living becomes compromised. This decrease in function is met with morbidity and mortality, as well as a large socioeconomic burden throughout the world. This review summarizes the most common age-related eye diseases, including cataract, glaucoma, diabetic retinopathy, retinal vein occlusion, and age-related macular degeneration. Although our understanding of the genetic and biochemical pathways of these diseases is sill at its primitive stages, we have become able to help our patients improve the quality of life as they age.

  17. Belief bias and relational reasoning.

    PubMed

    Roberts, Maxwell J; Sykes, Elizabeth D A

    2003-01-01

    When people evaluate categorical syllogisms, they tend to reject unbelievable conclusions and accept believable ones irrespective of their validity. Typically, this effect is particularly marked for invalid conclusions that are possible, but do not necessarily follow, given the premises. However, smaller believability effects can also be detected for other types of conclusion. Three experiments are reported here, in which an attempt was made to determine whether belief bias effects can manifest themselves on the relational inference task. Subjects evaluated the validity of conclusions such as William the Conqueror was king after the Pyramids were built (temporal task) or Manchester is north of Bournemouth (spatial task) with respect to their premises. All of the major findings for equivalent categorical syllogism tasks were replicated. However, the overall size of the main effect of believability appears to be related to task presentation, a phenomenon not previously identified for categorical syllogisms and which current theories of belief bias have difficulty explaining.

  18. Swearing, Euphemisms, and Linguistic Relativity

    PubMed Central

    Bowers, Jeffrey S.; Pleydell-Pearce, Christopher W.

    2011-01-01

    Participants read aloud swear words, euphemisms of the swear words, and neutral stimuli while their autonomic activity was measured by electrodermal activity. The key finding was that autonomic responses to swear words were larger than to euphemisms and neutral stimuli. It is argued that the heightened response to swear words reflects a form of verbal conditioning in which the phonological form of the word is directly associated with an affective response. Euphemisms are effective because they replace the trigger (the offending word form) by another word form that expresses a similar idea. That is, word forms exert some control on affect and cognition in turn. We relate these findings to the linguistic relativity hypothesis, and suggest a simple mechanistic account of how language may influence thinking in this context. PMID:21799832

  19. Relative Entropy and Torsion Coupling

    NASA Astrophysics Data System (ADS)

    Lin, Feng-Li; Ning, Bo

    2017-08-01

    Based on the the geometric realization of entanglement entropy via Ryu-Takayanagi formula, in this work we evaluate the relative entropy for the holographic deformed CFT dual to the torsion gravity coupled to the fermions of nonzero vev in the Einstein-Cartan formulation. We find that the positivity and monotonicity of the relative entropy imposes constraint on the strength of axial-current coupling, fermion mass and equation of state. Our work is the first example to demonstrate the nontrivial constraint on the bulk gravity theory from the quantum information inequalities. Especially, this constraint is beyond the symmetry action principle and should be understood as the unitarity constraint. This talk is based on the work [1] of the authors.

  20. Quantum mechanics, relativity and time

    NASA Astrophysics Data System (ADS)

    Basini, Giuseppe; Capozziello, Salvatore

    2005-01-01

    A discussion on quantum mechanics, general relativity and their relations is introduced. The assumption of the absolute validity of conservation laws and the extension to a 5D-space lead to reconsider several shortcomings and paradoxes of modern physics under a new light without the necessity to take into account symmetry breakings. In this picture, starting from first principles, and after a reduction procedure from 5D to 4D, dynamics leads to the natural emergence of two time arrows and ofa scalar-tensor theory of gravity. In this framework, phenomena like entanglement of systems and topology changes can be naturally accounted and, furthermore, several experimental evidences as gamma ray bursts, sizes of astrophysical structures and the observed values of cosmological parameters can be explained. The identification, thanks to conservation laws, of a covariant symplectic structure as a general feature also for gravity can be seen as a deep link common to all the interactions.

  1. [Asbestos-related lung cancer].

    PubMed

    Lotti, M

    2010-01-01

    Lung cancer is the leading cause of tumour death and a large percentage of it is associated with tobacco smoking. Epidemiology has shown that asbestos cumulative exposures increase the risk of lung cancer to a variable extent, depending on the manufacturing process and the specific job. The risk appears relatively small (< or = 2) and is detectable after massive exposures only. Clinical diagnosis of asbestos-related lung cancer is based upon medical history (exposures > 25 ff.ml years double the risk), possible lung fibrosis and counts of asbestos bodies and fibers in bronchoalveolar lavage and lung tissues. Pleural plaques do not correlate with the cumulative exposures that are associated with lung cancer. The multiplicative interaction between smoke and asbestos is only detectable when the risk associated with asbestos exposure is increased, i.e. after high exposures.

  2. Relativity, potential energy, and mass

    NASA Astrophysics Data System (ADS)

    Hecht, Eugene

    2016-11-01

    This paper is an exploration of the concept of energy, illuminated by the transformative insights of the special theory of relativity. Focusing on potential energy (PE), it will be shown that PE as presently defined is in conflict with the tenets of special relativity. Even though PE remains an indispensable theoretical device its actual physicality is questionable. Moreover its ontological status is quite different from that of both kinetic energy and mass, a significant point that is not widely appreciated. We will establish that PE is a theoretical concept as opposed to an empirical one; it is a descriptor of mass-energy without a detectable physical presence of its own. PE is a measure of energy stored, it is not the energy stored.

  3. Kidney injuries related to ipilimumab.

    PubMed

    Izzedine, Hassane; Gueutin, Victor; Gharbi, Chems; Mateus, Christine; Robert, Caroline; Routier, Emilie; Thomas, Marina; Baumelou, Alain; Rouvier, Philippe

    2014-08-01

    Monoclonal antibodies directed against the immune checkpoint protein cytotoxic T-lymphocyte antigen-4 (CTLA-4; CD152) have been investigated in metastatic melanoma and other cancers and have shown promising results. Inhibition of CTLA-4 characteristically induces well-known side effects called "immune-related adverse events" (irAEs). IrAEs mainly include colitis, dermatitis, hepatitis, endocrinopathies; uveitis, iridocyclitis, neuropathies, and inflammatory myopathy have occasionally been reported. Kidney involvement is rare. We report 2 cases of acute granulomatous interstitial nephritis and present, based on literature review, renal disorders related to Ipilimumab therapy. Autoimmune symptoms have to be carefully checked for patients treated with CTLA-4 inhibitors. In order to reduce the risk of sequelae, early recognition of irAEs and treatment initiation are crucial.

  4. Methamphetamine-related brainstem haemorrhage.

    PubMed

    Chiu, Zelia K; Bennett, Iwan E; Chan, Patrick; Rosenfeld, Jeffrey V

    2016-10-01

    We report the case of an otherwise healthy 29-year-old woman who presented with a brainstem haemorrhage following intravenous methamphetamine use. Extensive investigation did not reveal an underlying pathology, and the development of symptoms was temporally related to methamphetamine injection. Although intracerebral haemorrhage secondary to methamphetamine use is well documented, this report describes a haemorrhage within the brainstem which is a rare location. While animal studies have demonstrated the potential of methamphetamines to produce brainstem haemorrhages, there has only been one previous report describing a haemorrhage in this location due to amphetamine use in humans. We conclude with a brief discussion of the clinical features and aetiology of methamphetamine-related stroke. Copyright © 2016 Elsevier Ltd. All rights reserved.

  5. Asia’s Bilateral Relations

    DTIC Science & Technology

    2004-10-01

    engaged in a three-day orgy with several hundred Chinese prostitutes in a luxury hotel in Zhuhai. The episode coincided with the anniversary of the 1931...out of the dormitory and into a hotel . As many as 1,000 Chinese students protested on the campus and then marched downtown. The Chinese MOFA called in...ROK’s pluralist democracy and the PRC’s controversial definition of Chinese “sovereignty.” Although Seoul severed diplomatic relations with Taipei in

  6. General Relativity and Spacetime Relationism.

    NASA Astrophysics Data System (ADS)

    Hoefer, Carl

    1992-01-01

    This dissertation takes up the project of showing that, in the context of the general theory of relativity (GTR), spacetime relationism is not a refuted or hopeless view, as many in the recent literature have maintained (John Earman, Michael Friedman, and others). Most of the challenges to the relationist view in General Relativity can be satisfactorily answered; in addition, the opposing absolutist and substantivalist views of spacetime can be shown to be problematic. The crucial burden for relationists concerned with GTR is to show that the realistic cosmological models, i.e. those that may be roughly accurate representations of our universe, satisfy Mach's ideas about the origin of inertia. This dissertation clears the way for and begins such a demonstration. After a brief discussion of the problem of the nature of spacetime and its history in the Introduction, chapters 2 and 3 provide conceptual analysis and criticism of contemporary philosophical arguments about relationism, absolutism, and particularly substantivalism. The current best arguments in favor of substantivalism are shown to be flawed, with the exception of the argument from inertial and metrical structure; and on this issue, it is shown that both relationism and substantivalism need to argue for modifications of GTR (restriction of its models to those with certain features) in order to have a non-trivial explanation of inertial and metrical structure. For relationists, a Machian account of the origin of inertia in some models of GTR is required. Chapter 4 demonstrates that such a Machian account is equivalent to the demand for a truly general relativity of motion. Chapter 5 explores the history of Einstein's commitment to Mach's ideas in his work on GTR. Through an examination of the history of Einstein's attempts to impose Machian constraints on the models of General Relativity, further insight into the nature of this problem is obtained, as are reasons to believe that the project is by no means

  7. Relative-Error-Covariance Algorithms

    NASA Technical Reports Server (NTRS)

    Bierman, Gerald J.; Wolff, Peter J.

    1991-01-01

    Two algorithms compute error covariance of difference between optimal estimates, based on data acquired during overlapping or disjoint intervals, of state of discrete linear system. Provides quantitative measure of mutual consistency or inconsistency of estimates of states. Relative-error-covariance concept applied, to determine degree of correlation between trajectories calculated from two overlapping sets of measurements and construct real-time test of consistency of state estimates based upon recently acquired data.

  8. [Non plaque-related gingivitis].

    PubMed

    van Steenberghe, D; Quirynen, M

    2002-11-01

    Gingivitis is a symptom revealing an underlying pathology, mostly due to a bacterial accumulation. This explains why for dentists gingivitis is often synonymous of a plaque-related gingivitis. This is a dangerous simplification since it can be due to very different etiologies, which evidently imply very different treatments. This paper illustrates the most frequent causes, not only encountered by the periodontologist, but also by the general practitioner, such as erosive lichen planus, herpes, Candida and radiotherapy.

  9. Literature-Related Discovery (LRD)

    DTIC Science & Technology

    2007-11-01

    and related nitrogen oxides on platelet aggregation (Gruetter et al, 1981; Rapoport and Murad, 1983; Mellion et al, 1981) Picolinic Acid MED/ MED...Hypotension induced rapidly after intravenous administration of … picolinic acid … due to … direct depression of cardiac function and decrease...Velasco et al, 1975) Fusaric Acid [ picolinic acid derivative] and Picolinin Acid MED/ MED Hypotension induced rapidly after intravenous

  10. Biofilm related to dental implants.

    PubMed

    Lee, Angie; Wang, Hom-Lay

    2010-10-01

    Oral biofilm-related diseases such as periodontal and peri-implant diseases are unique infections in that they develop from the resident indigenous microflora. As more implants are nowadays being placed, clinicians may encounter more complications. Therefore, understanding the etiology is warranted to establish adequate diagnosis and provide proper treatment. This article focuses on understanding peri-implant microbiology and its roles in peri-implant diseases.

  11. Pakistan-U.S. Relations

    DTIC Science & Technology

    2006-10-26

    seek future civil nuclear assistance from Beijing, including potential provision of complete power reactors, especially in light of Washington’s...nuclear proliferation to North Korea, Iran, and Libya may complicate future Pakistan-U.S. relations. Security International Terrorism. After the...an apparent arms race between India and Pakistan to be among the most likely potential causes of the future use of nuclear weapons by states. In May

  12. American-Ukrainian Nuclear Relations

    DTIC Science & Technology

    1996-10-01

    dismantlement of the tactical weapons, Ukraine resumed the shipments. Washington’s 4 AMERICAN-UKRAINIAN NUCLEAR RELATIONS anxiety about the nuclear issue...identity, focusing on barring the use of the Ukrainian language as the Czars did in the 19th century, as well as in physically attempting to crush the...discussions with Ukraine were proceeding along the line of the possibility of a joint US-Russian security assurance and the possible language that any

  13. Paediatric horse-related trauma.

    PubMed

    Theodore, Jane E; Theodore, Sigrid G; Stockton, Kellie A; Kimble, Roy M

    2017-06-01

    This retrospective cohort study reported on the epidemiology of horse-related injuries for patients presenting to the only tertiary paediatric trauma hospital in Queensland. The secondary outcome was to examine the use of helmets and adult supervision. Traumatic brain injury (TBI) was examined in relation to helmet use. Morbidity and mortality were also recorded. Included were all patients presenting with any horse-related trauma to the Royal Children's Hospital in Brisbane from January 2008 to August 2014. Data were retrospectively collected on patient demographics, hospital length of stay (LOS), mechanism of injury (MOI), safety precautions taken, diagnoses and surgical procedures performed. Included in the analysis were 187 incidents involving 171 patients. Most patients were aged 12-14 years (36.9%) and female (84.5%). The most common MOI were falls while riding horses (97.1%). Mild TBI (24.6%) and upper limb fractures (20.9%) were common injuries sustained. Patients who wore helmets had significantly reduced hospital LOS and severity of TBI when compared with those who did not wear helmets (P < 0.001 and P = 0.028, respectively). Morbidity was reported in 7.5% of patients. There were three deaths in Queensland. Helmet use is recommended for non-riders when handling horses, in addition to being a compulsory requirement whilst horse riding. Prompts in documentation may assist doctors to record the use of safety attire and adult supervision. This will allow future studies to further investigate these factors in relation to clinical outcomes. © 2017 Paediatrics and Child Health Division (The Royal Australasian College of Physicians).

  14. U.S.-Cuba Relations

    DTIC Science & Technology

    2003-04-07

    USAWC STRATEGY RESEARCH PROJECT U.S.- Cuba Relations by Colonel Mark Triplett United States Marine Corps Lieutenant Colonel Harry V. Phillips Project...must determine when and how. The departure of Fidel Castro from Cuba poses several policy alternatives for the United States . Depending on who...needs on its borders. Stability in Cuba is in the best interest of the United States . This paper briefly examines the history of Cuba , the background of

  15. Bubble collisions in general relativity

    NASA Astrophysics Data System (ADS)

    Sikos, S. T. C.; Wu, Z. C.

    The collision of two bubbles of true vacuum in a background of false vacuum is considered in the context of General Relativity. It is found that in the thin wall approximation, the problem can be solved exactly. The region to the future of the collision is described by the pseudo-Schwarzschild de Sitter metric. The parameters in this metric are found by solving the junction conditions at each collision.

  16. Honduran-U.S. Relations

    DTIC Science & Technology

    2010-06-18

    Honduras designa a Micheletti ‘diputado vitalicio,’” Agence France Presse, January 13, 2010; “Más de 50 funcionarios gozarán de seguridad vitalicia...mexico.cnn.com/videos/2010/05/19/porfirio-lobo-se-defiende-de-la-cumbre. Honduran-U.S. Relations Congressional Research Service 9 The National Popular ...Resistance Front (FNRP, Frente Nacional de Resistencia Popular , formerly the National Resistance Front Against the Coup d’état), is an umbrella

  17. Non HFE related hereditary haemochromatosis.

    PubMed

    Sharma, S K; Mangudkar, Sangram; Rathod, Mehul; Verma, Amrita; Phanikumar, R L V; Garg, Subodh; Dhakne, Ajinkya; Barure, Ramdas

    2014-03-01

    Hereditary hemochromatosis (HH) is manifested as iron overload in different organs due to homozygosity of a single autosomal mutation. Two different mutations C282Y and H63D in the HFE gene have been associated with hereditary hemochromatosis cases. This disease is seen in northern european populations, but in India it is a rare disease. We report a young male with severe abnormalty of liver functions due to Non HFE related Hereditary Hemochromatosis.

  18. Fluctuation relation for qubit calorimetry.

    PubMed

    Kupiainen, Antti; Muratore-Ginanneschi, Paolo; Pekola, Jukka; Schwieger, Kay

    2016-12-01

    Motivated by proposed thermometry measurement on an open quantum system, we present a simple model of an externally driven qubit interacting with a finite-sized fermion environment acting as a calorimeter. The derived dynamics is governed by a stochastic Schrödinger equation coupled to the temperature change of the calorimeter. We prove a fluctuation relation and deduce from it a notion of entropy production. Finally, we discuss the first and second law associated with the dynamics.

  19. Dark current related breakdown mechanism

    NASA Astrophysics Data System (ADS)

    Wang, Faya; Ge, Lixin

    2012-12-01

    High power tests of an 805 MHz pillbox cavity for the Muon Collider program have shown that the breakdown related damage increases and the sustainable gradient decreases with the application of a strong external magnetic field. To try to explain these results, a model of dark current associated breakdown was formulated and simulated with the Track3P code. The results show in general how the gradient could be reduced as function of magnetic field. This paper summarizes these studies to date.

  20. Pakistan-U.S. Relations

    DTIC Science & Technology

    2008-08-25

    beyond the operational control of its nominal administrators. Yet many informed observers conclude that the ISI, while sometimes willing to “push the...on Pakistani- controlled territory. With indications that terrorism on Indian soil beyond the Jammu and Kashmir state may have been linked to Pakistan...international guidelines; establishment of a modern, effective systems to control the export of sensitive dual-use items related to WMD; and the conduct of

  1. Pakistan-U.S. Relations

    DTIC Science & Technology

    2008-11-10

    and the ensuing enlistment of Pakistan as a key ally in U.S.- led counterterrorism efforts. Top U.S. officials have praised Pakistan for its ongoing...military rule for more than half of its existence. In 1999, the elected government was ousted in a coup led by Army Chief General Pervez Musharraf...Bhutto. However, February 2008 parliamentary elections were relatively credible and seated a coalition led by Bhutto’s widower, Asif Zardari, and

  2. Fluctuation relation for qubit calorimetry

    NASA Astrophysics Data System (ADS)

    Kupiainen, Antti; Muratore-Ginanneschi, Paolo; Pekola, Jukka; Schwieger, Kay

    2016-12-01

    Motivated by proposed thermometry measurement on an open quantum system, we present a simple model of an externally driven qubit interacting with a finite-sized fermion environment acting as a calorimeter. The derived dynamics is governed by a stochastic Schrödinger equation coupled to the temperature change of the calorimeter. We prove a fluctuation relation and deduce from it a notion of entropy production. Finally, we discuss the first and second law associated with the dynamics.

  3. Galaxies, Axisymmetric Systems and Relativity

    NASA Astrophysics Data System (ADS)

    MacCallum, M. A. H.

    2011-06-01

    List of contributors; Preface; Prof. W. B. Bonnor: a biological sketch; Part I. Galaxies and Cosmology: 1. The origin of large scale cosmic structure B. J. T. Jones and P. L. Palmer; 2. The problem of origin of the primordial pertubations and the modern cosmology V. N. Lukash and I. D. Novikov; 3. The automorphism group and field equations for Bianchi universes W. L. Rogue and G. F. R. Ellis; 4. New perspectives on galaxy formation J. Silk; Part II. Axisymmetric Systems: 5. On exact radiative solutions representing finite sources J. Bicak; 6. Proof of a generalized Geroch conjecture I. Hauser and F. J. Ernst; 7. Limits of the double Kerr solution C. Hoenselaers; 8. Non-inheritance of static symmetry by Maxwell fields M. A. H. MacCallum and N. Van den Bergh; 9. Stationary axisymmetric electrovacuum fields in general relativity G. Neugebauer and D. Kramer; 10. An almost conformal approach to axial symmetry Z. Perjes; 11. Conformally stationary axisymmetric space-times J. Winicour; Part III. Relativity: 12. A family of conformally flat space-times having the same curvature tensor in a given co-ordinate frame C. D. Collinson; 13. On the Bell-Szekeres solution for colliding electromagnetic waves J. B. Griffiths; 14. A remark on the Hauser metric A. Held; 15. Numerical relativity by power series R. Penrose; 16. Projective relativity and the equation of motion E. Schmutzer; 17. On generalized equations of goedesic deviation B. F. Schutz; 18. Lobatchevski plane gravitational waves S. T. C. Siklos; 19. Perfect fluid and vacuum solutions of Einstein's field equations with flat 3-dimensional slices H. Stephani and Th. Wolf; 20. Self-similar solutions of Einstein's equations J. Wainwright.

  4. Relativity on Rotated Graph Paper

    NASA Astrophysics Data System (ADS)

    Salgado, Roberto

    2011-11-01

    We present visual calculations in special relativity using spacetime diagrams drawn on graph paper that has been rotated by 45 degrees. The rotated lines represent lightlike directions in Minkowski spacetime, and the boxes in the grid (called light-clock diamonds) represent ticks of an inertial observer's lightclock. We show that many quantitative results can be read off a spacetime diagram by counting boxes, using a minimal amount of algebra.

  5. Sgr A* and general relativity

    NASA Astrophysics Data System (ADS)

    Johannsen, Tim

    2016-06-01

    General relativity has been widely tested in weak gravitational fields but still stands largely untested in the strong-field regime. According to the no-hair theorem, black holes in general relativity depend only on their masses and spins and are described by the Kerr metric. Mass and spin are the first two multipole moments of the Kerr spacetime and completely determine all higher-order moments. The no-hair theorem and, hence, general relativity can be tested by measuring potential deviations from the Kerr metric affecting such higher-order moments. Sagittarius A* (Sgr A*), the supermassive black hole at the center of the Milky Way, is a prime target for precision tests of general relativity with several experiments across the electromagnetic spectrum. First, near-infrared (NIR) monitoring of stars orbiting around Sgr A* with current and new instruments is expected to resolve their orbital precessions. Second, timing observations of radio pulsars near the Galactic center may detect characteristic residuals induced by the spin and quadrupole moment of Sgr A*. Third, the event horizon telescope, a global network of mm and sub-mm telescopes, aims to study Sgr A* on horizon scales and to image the silhouette of its shadow cast against the surrounding accretion flow using very-long baseline interferometric (VLBI) techniques. Both NIR and VLBI observations may also detect quasiperiodic variability of the emission from the accretion flow of Sgr A*. In this review, I discuss our current understanding of the spacetime of Sgr A* and the prospects of NIR, timing, and VLBI observations to test its Kerr nature in the near future.

  6. Holonomy groups in general relativity

    SciTech Connect

    Hall, G.S.; Kay, W.

    1988-02-01

    The infinitesimal holonomy group structure of space-time is discussed and related to the Petrov type of the Weyl tensor and the algebraic (Segre) type of the energy-momentum tensor. The number of covariant derivatives of the curvature tensor required to determine the infinitesimal holonomy group is determined in each case and the complete classification scheme is tabulated. Some special cases of physical interest are investigated in more detail. A geometrical approach is followed throughout.

  7. [Excessive sweating related to hydromorphone].

    PubMed

    Vinit, J; Devilliers, H; Audia, S; Leguy, V; Mura, H; Falvo, N; Berthier, S; Besancenot, J-F; Bonnotte, B; Lorcerie, B

    2009-02-01

    Diffuse and abundant sweating in a middle age patient evolving for several weeks should raise suspicion of malignant lymphoma and infectious or neuroendocrine disorders before considering a drug origin. We report a patient who presented with severe and invalidating excessive sweating related to hydromorphone therapy for vertebral pain. Amongst their many reported side-effects, excessive sweating disappearing with discontinuation of the drug have been reported with some opiates.

  8. Least Absolute Relative Error Estimation.

    PubMed

    Chen, Kani; Guo, Shaojun; Lin, Yuanyuan; Ying, Zhiliang

    2010-01-01

    Multiplicative regression model or accelerated failure time model, which becomes linear regression model after logarithmic transformation, is useful in analyzing data with positive responses, such as stock prices or life times, that are particularly common in economic/financial or biomedical studies. Least squares or least absolute deviation are among the most widely used criterions in statistical estimation for linear regression model. However, in many practical applications, especially in treating, for example, stock price data, the size of relative error, rather than that of error itself, is the central concern of the practitioners. This paper offers an alternative to the traditional estimation methods by considering minimizing the least absolute relative errors for multiplicative regression models. We prove consistency and asymptotic normality and provide an inference approach via random weighting. We also specify the error distribution, with which the proposed least absolute relative errors estimation is efficient. Supportive evidence is shown in simulation studies. Application is illustrated in an analysis of stock returns in Hong Kong Stock Exchange.

  9. Relating paternity to paternal care.

    PubMed Central

    Sheldon, Ben C

    2002-01-01

    Intuition suggests, to most people, that parents should be selected to care for their offspring in relation to how certain they are of being the parents of those offspring. Theoretical models of the relationship between parental investment and certainty of parentage predict the two to be related only when some other assumptions are made, few of which can be taken for granted. I briefly review the models and their assumptions, and discuss two kinds of difficulty facing an empiricist wishing to test the models. The first is the problem of unmeasured (and immeasurable) variables. The second is the problem that even the most extensive models do not capture the complexity that can be demonstrated in real systems. I illustrate some of these problems, and some qualitative tests of the models, with experimental work on a population of the collared flycatcher. My conclusion is that although there are some cases where the models have qualitative support, we are a long way from understanding whether paternal care is commonly adjusted in relation to certainty of paternity. PMID:11958702

  10. Sound Clocks and Sonic Relativity

    NASA Astrophysics Data System (ADS)

    Todd, Scott L.; Menicucci, Nicolas C.

    2017-08-01

    Sound propagation within certain non-relativistic condensed matter models obeys a relativistic wave equation despite such systems admitting entirely non-relativistic descriptions. A natural question that arises upon consideration of this is, "do devices exist that will experience the relativity in these systems?" We describe a thought experiment in which `acoustic observers' possess devices called sound clocks that can be connected to form chains. Careful investigation shows that appropriately constructed chains of stationary and moving sound clocks are perceived by observers on the other chain as undergoing the relativistic phenomena of length contraction and time dilation by the Lorentz factor, γ , with c the speed of sound. Sound clocks within moving chains actually tick less frequently than stationary ones and must be separated by a shorter distance than when stationary to satisfy simultaneity conditions. Stationary sound clocks appear to be length contracted and time dilated to moving observers due to their misunderstanding of their own state of motion with respect to the laboratory. Observers restricted to using sound clocks describe a universe kinematically consistent with the theory of special relativity, despite the preferred frame of their universe in the laboratory. Such devices show promise in further probing analogue relativity models, for example in investigating phenomena that require careful consideration of the proper time elapsed for observers.

  11. Limiting values and general relativity

    NASA Astrophysics Data System (ADS)

    Pyrohova, U. V.; Golubov, O. A.

    2015-10-01

    From the general theory of relativity it is known that the force of gravitational interaction never exceeds the value Fmax=c2/4G. In this paper we try to make the notion of the force limit intuitively understandable, and illustrate it with thought experiments with such exotic objects as black holes. It was found that maximum limits of force, power, and flow of mass exist in nature. These limits are physically equivalent. All the maximum values could be seen only on a black hole surface. Moreover, maximum limits of force, power, and mass flow are inevitable consequences of properties of the event horizon of a black hole. And vice versa, the existence of black holes could be deduced from the principle of the maximum force. So, these three principles also could be considered as features of a black hole. The role played by the maximum force in general relativity is similar to the role played by speed of light in special relativity.

  12. Euthanasia and related practices worldwide.

    PubMed

    Kelleher, M J; Chambers, D; Corcoran, P; Keeley, H S; Williamson, E

    1998-01-01

    The present paper examines the occurrence of matters relating to the ending of life, including active euthanasia, which is, technically speaking, illegal worldwide. Interest in this most controversial area is drawn from many varied sources, from legal and medical practitioners to religious and moral ethicists. In some countries, public interest has been mobilized into organizations that attempt to influence legislation relating to euthanasia. Despite the obvious international importance of euthanasia, very little is known about the extent of its practice, whether passive or active, voluntary or involuntary. This examination is based on questionnaires completed by 49 national representatives of the International Association for Suicide Prevention (IASP), dealing with legal and religious aspects of euthanasia and physician-assisted suicide, as well as suicide. A dichotomy between the law and medical practices relating to the end of life was uncovered by the results of the survey. In 12 of the 49 countries active euthanasia is said to occur while a general acceptance of passive euthanasia was reported to be widespread. Clearly, definition is crucial in making the distinction between active and passive euthanasia; otherwise, the entire concept may become distorted, and legal acceptance may become more widespread with the effect of broadening the category of individuals to whom euthanasia becomes an available option. The "slippery slope" argument is briefly considered.

  13. Peritoneal catheters and related infections.

    PubMed

    Thodis, Elias; Passadakis, Ploumis; Lyrantzopooulos, Nikolaos; Panagoutsos, Stelios; Vargemezis, Vassilis; Oreopoulos, Dimitrios

    2005-01-01

    Catheter related infectious complications (exit-site infections, tunnel infections, and peritonitis) remain the major reasons for technique failure during the three decades since, continuous ambulatory peritoneal dialysis (CAPD) treatment has been first established. Despite improvements in catheter's survival rates, catheter related complications result in an increase in the cumulative patients' morbidity and often leading to the catheter removal. The ideal catheter provides reliable and rapid dialysate flow rates without leaks or infections. Among several types, the double-cuff straight Tenckhoff catheter, developed in 1968, is still the most widely used, although its use is decreasing in favour of swanneck catheters. Although there are only few well-designed trials comparing catheters and catheters related infectious complications, controlling for all other important variables, no difference in these complications among the main types of catheters was seen. The single cuff catheters have been associated with a shorter survival rate and time to the first peritonitis episode than the double-cuff catheters. Also exit-site infections were found to be more frequent and significantly more resistant to treatment with single-cuff compared to double-cuff ones. Finally, better results have been reported with the latest developed presternal peritoneal dialysis catheter both regarding survival rates and exit-site infection and peritonitis rates. Recently a renewed interest in continuous flow peritoneal dialysis stimulated inventions of imaginative, double-lumen catheters since a suitable peritoneal access is a sine qua non condition for the development of this new technique of peritoneal dialysis.

  14. A genesis of special relativity

    NASA Astrophysics Data System (ADS)

    Messager, Valérie; Letellier, Christophe

    2015-07-01

    The genesis of special relativity is intimately related to the development of the theory of light propagation. When optical phenomena were described, there are typically two kinds of theories: (i) One based on light rays and light particles and (ii) one considering the light as waves. When diffraction and refraction were experimentally discovered, light propagation became more often described in terms of waves. Nevertheless, when attempts were made to explain how light was propagated, it was nearly always in terms of a corpuscular theory combined with an ether, a subtle medium supporting the waves. Consequently, most of the theories from Newton's to those developed in the 19th century were dual and required the existence of an ether. We therefore used the ether as our Ariadne thread for explaining how the principle of relativity became generalized to the so-called Maxwell equations around the 1900's. Our aim is more to describe how the successive ideas were developed and interconnected than framing the context in which these ideas arose.

  15. Uncertainty relation in Schwarzschild spacetime

    NASA Astrophysics Data System (ADS)

    Feng, Jun; Zhang, Yao-Zhong; Gould, Mark D.; Fan, Heng

    2015-04-01

    We explore the entropic uncertainty relation in the curved background outside a Schwarzschild black hole, and find that Hawking radiation introduces a nontrivial modification on the uncertainty bound for particular observer, therefore it could be witnessed by proper uncertainty game experimentally. We first investigate an uncertainty game between a free falling observer and his static partner holding a quantum memory initially entangled with the quantum system to be measured. Due to the information loss from Hawking decoherence, we find an inevitable increase of the uncertainty on the outcome of measurements in the view of static observer, which is dependent on the mass of the black hole, the distance of observer from event horizon, and the mode frequency of quantum memory. To illustrate the generality of this paradigm, we relate the entropic uncertainty bound with other uncertainty probe, e.g., time-energy uncertainty. In an alternative game between two static players, we show that quantum information of qubit can be transferred to quantum memory through a bath of fluctuating quantum fields outside the black hole. For a particular choice of initial state, we show that the Hawking decoherence cannot counteract entanglement generation after the dynamical evolution of system, which triggers an effectively reduced uncertainty bound that violates the intrinsic limit -log2 ⁡ c. Numerically estimation for a proper choice of initial state shows that our result is comparable with possible real experiments. Finally, a discussion on the black hole firewall paradox in the context of entropic uncertainty relation is given.

  16. Relative mortality among criminals in Norway and the relation to drug and alcohol related offenses.

    PubMed

    Skardhamar, Torbjørn; Skirbekk, Vegard

    2013-01-01

    Registered offenders are known to have a higher mortality rate, but given the high proportion of offenders with drug-addiction, particularly among offenders with a custodial sentence, higher mortality is expected. While the level of overall mortality compared to the non-criminal population is of interest in itself, we also estimate the risk of death by criminal records related to substance abuse and other types of criminal acts, and separate between those who receive a prison sentence or not. Age-adjusted relative risks of death for 2000-2008 were studied in a population based dataset. Our dataset comprise the total Norwegian population of 2.9 million individuals aged 15-69 years old in 1999, of whom 10% had a criminal record in the 1992-1999 period. Individuals with a criminal record have twice the relative risk (RR) of death of the control group (non-offenders). Males with a record of use/possession of drugs and a prison record have an 11.9 RR (females, 15.6); males with a drug record but no prison record have a 6.9 RR (females 10.5). Males imprisoned for driving under the influence of substances have a 4.4 RR (females 5.6); males with a record of driving under the influence but no prison sentence have a 3.2 RR (females 6.5). Other male offenders with a prison record have a 2.8 RR (females 3.7); other male offenders with no prison record have a 1.7 RR (females 2.3). Significantly higher mortality was found for people with a criminal record, also for those without any record of drug use. Mortality is much higher for those convicted of substance-related crimes: more so for drug- than for alcohol-related crimes and for women.

  17. Relative Mortality among Criminals in Norway and the Relation to Drug and Alcohol Related Offenses

    PubMed Central

    Skardhamar, Torbjørn; Skirbekk, Vegard

    2013-01-01

    Background Registered offenders are known to have a higher mortality rate, but given the high proportion of offenders with drug-addiction, particularly among offenders with a custodial sentence, higher mortality is expected. While the level of overall mortality compared to the non-criminal population is of interest in itself, we also estimate the risk of death by criminal records related to substance abuse and other types of criminal acts, and separate between those who receive a prison sentence or not. Methods Age-adjusted relative risks of death for 2000–2008 were studied in a population based dataset. Our dataset comprise the total Norwegian population of 2.9 million individuals aged 15–69 years old in 1999, of whom 10% had a criminal record in the 1992–1999 period. Results Individuals with a criminal record have twice the relative risk (RR) of death of the control group (non-offenders). Males with a record of use/possession of drugs and a prison record have an 11.9 RR (females, 15.6); males with a drug record but no prison record have a 6.9 RR (females 10.5). Males imprisoned for driving under the influence of substances have a 4.4 RR (females 5.6); males with a record of driving under the influence but no prison sentence have a 3.2 RR (females 6.5). Other male offenders with a prison record have a 2.8 RR (females 3.7); other male offenders with no prison record have a 1.7 RR (females 2.3). Conclusion Significantly higher mortality was found for people with a criminal record, also for those without any record of drug use. Mortality is much higher for those convicted of substance-related crimes: more so for drug- than for alcohol-related crimes and for women. PMID:24223171

  18. Comparing records with related chronologies

    NASA Astrophysics Data System (ADS)

    Bronk Ramsey, Christopher; Albert, Paul; Kearney, Rebecca; Staff, Richard A.

    2016-04-01

    In order to integrate ice, terrestrial and marine records, it is necessary to deal with records on different timescales. These timescales can be grouped into those that use a common fundamental chronometer (such as Uranium-Thorium dating or Radiocarbon) and can also be related to one another where we have chronological tie points such as tephra horizons. More generally we can, through a number of different methodologies, derive relationships between different timescales. A good example of this is the use of cosmogenic isotope production, specifically 10Be and 14C to relate the calibrated radiocarbon timescale to that of the Greenland ice cores. The relationships between different timescales can be mathematically expressed in terms of time-transfer functions. This formalism allows any related record to be considered against any linked timescale with an appropriate associated uncertainty. The prototype INTIMATE chronological database allows records to be viewed and compared in this way and this is now being further developed, both to include a wider range of records and also to provide better connectivity to other databases and chronological tools. These developments will also include new ways to use tephra tie-points to constrain the relationship between timescales directly, without needing to remodel each associated timescale. The database as it stands allows data for particular timeframes to be recalled and plotted against any timescale, or exported in spreadsheet format. New functionality will be added to allow users to work with their own data in a private space and then to publish it when it has been through the peer-review publication process. In order to make the data easier to use for other further analysis and plotting, and with data from other sources, the database will also act as a server to deliver data in a JSON format. The aim of this work is to make the comparison of integrated data much easier for researchers and to ensure that good practice in

  19. Human alcohol-related neuropathology

    PubMed Central

    Kril, Jillian J.

    2015-01-01

    Alcohol-related diseases of the nervous system are caused by excessive exposures to alcohol, with or without co-existing nutritional or vitamin deficiencies. Toxic and metabolic effects of alcohol (ethanol) vary with brain region, age/developmental stage, dose, and duration of exposures. In the mature brain, heavy chronic or binge alcohol exposures can cause severe debilitating diseases of the central and peripheral nervous systems, and skeletal muscle. Most commonly, long-standing heavy alcohol abuse leads to disproportionate loss of cerebral white matter and impairments in executive function. The cerebellum (especially the vermis), cortical-limbic circuits, skeletal muscle, and peripheral nerves are also important targets of chronic alcohol-related metabolic injury and degeneration. Although all cell types within the nervous system are vulnerable to the toxic, metabolic, and degenerative effects of alcohol, astrocytes, oligodendrocytes, and synaptic terminals are major targets, accounting for the white matter atrophy, neural inflammation and toxicity, and impairments in synaptogenesis. Besides chronic degenerative neuropathology, alcoholics are predisposed to develop severe potentially life-threatening acute or subacute symmetrical hemorrhagic injury in the diencephalon and brainstem due to thiamine deficiency, which exerts toxic/metabolic effects on glia, myelin, and the microvasculature. Alcohol also has devastating neurotoxic and teratogenic effects on the developing brain in association with fetal alcohol spectrum disorder/fetal alcohol syndrome. Alcohol impairs function of neurons and glia, disrupting a broad array of functions including neuronal survival, cell migration, and glial cell (astrocytes and oligodendrocytes) differentiation. Further progress is needed to better understand the pathophysiology of this exposure-related constellation of nervous system diseases and better correlate the underlying pathology with in vivo imaging and biochemical lesions

  20. Modern Canonical Quantum General Relativity

    NASA Astrophysics Data System (ADS)

    Thiemann, Thomas

    2007-09-01

    Preface; Notation and conventions; Introduction; Part I. Classical Foundations, Interpretation and the Canonical Quantisation Programme: 1. Classical Hamiltonian formulation of general relativity; 2. The problem of time, locality and the interpretation of quantum mechanics; 3. The programme of canonical quantisation; 4. The new canonical variables of Ashtekar for general relativity; Part II. Foundations of Modern Canonical Quantum General Relativity: 5. Introduction; 6. Step I: the holonomy-flux algebra [P]; 7. Step II: quantum-algebra; 8. Step III: representation theory of [A]; 9. Step IV: 1. Implementation and solution of the kinematical constraints; 10. Step V: 2. Implementation and solution of the Hamiltonian constraint; 11. Step VI: semiclassical analysis; Part III. Physical Applications: 12. Extension to standard matter; 13. Kinematical geometrical operators; 14. Spin foam models; 15. Quantum black hole physics; 16. Applications to particle physics and quantum cosmology; 17. Loop quantum gravity phenomenology; Part IV. Mathematical Tools and their Connection to Physics: 18. Tools from general topology; 19. Differential, Riemannian, symplectic and complex geometry; 20. Semianalytical category; 21. Elements of fibre bundle theory; 22. Holonomies on non-trivial fibre bundles; 23. Geometric quantisation; 24. The Dirac algorithm for field theories with constraints; 25. Tools from measure theory; 26. Elementary introduction to Gel'fand theory for Abelean C* algebras; 27. Bohr compactification of the real line; 28. Operatir -algebras and spectral theorem; 29. Refined algebraic quantisation (RAQ) and direct integral decomposition (DID); 30. Basics of harmonic analysis on compact Lie groups; 31. Spin network functions for SU(2); 32. + Functional analytical description of classical connection dynamics; Bibliography; Index.

  1. Modern Canonical Quantum General Relativity

    NASA Astrophysics Data System (ADS)

    Thiemann, Thomas

    2008-11-01

    Preface; Notation and conventions; Introduction; Part I. Classical Foundations, Interpretation and the Canonical Quantisation Programme: 1. Classical Hamiltonian formulation of general relativity; 2. The problem of time, locality and the interpretation of quantum mechanics; 3. The programme of canonical quantisation; 4. The new canonical variables of Ashtekar for general relativity; Part II. Foundations of Modern Canonical Quantum General Relativity: 5. Introduction; 6. Step I: the holonomy-flux algebra [P]; 7. Step II: quantum-algebra; 8. Step III: representation theory of [A]; 9. Step IV: 1. Implementation and solution of the kinematical constraints; 10. Step V: 2. Implementation and solution of the Hamiltonian constraint; 11. Step VI: semiclassical analysis; Part III. Physical Applications: 12. Extension to standard matter; 13. Kinematical geometrical operators; 14. Spin foam models; 15. Quantum black hole physics; 16. Applications to particle physics and quantum cosmology; 17. Loop quantum gravity phenomenology; Part IV. Mathematical Tools and their Connection to Physics: 18. Tools from general topology; 19. Differential, Riemannian, symplectic and complex geometry; 20. Semianalytical category; 21. Elements of fibre bundle theory; 22. Holonomies on non-trivial fibre bundles; 23. Geometric quantisation; 24. The Dirac algorithm for field theories with constraints; 25. Tools from measure theory; 26. Elementary introduction to Gel'fand theory for Abelean C* algebras; 27. Bohr compactification of the real line; 28. Operatir -algebras and spectral theorem; 29. Refined algebraic quantisation (RAQ) and direct integral decomposition (DID); 30. Basics of harmonic analysis on compact Lie groups; 31. Spin network functions for SU(2); 32. + Functional analytical description of classical connection dynamics; Bibliography; Index.

  2. Social relations and breath odour.

    PubMed

    McKeown, L

    2003-11-01

    In this retrospective qualitative study, the researcher reviewed 55 client records of The Breath Odour Clinic. The purpose was to determine if individuals attended a clinic specialised in treating oral malodour for medical or social reasons. The study focused on the psychosocial and breath odour history. Clients had agreed to the use of information for research purposes. Society uses odour as a means to define and interact with the world. The olfactory, smelling experience is intimate, emotionally charged and connects us with the world. It follows that the smell from mouth breath odour can connect or disconnect a person from their social environment and intimate relationships. How one experiences one's own body is very personal and private but also very public. Breath odour is public as it occurs within a social and cultural context and personal as it affects one's body image and self-confidence. Body image, self-image and social relations mesh, interact and impact upon each other. Breath odour is a dynamic and interactive aspect of the self-image. In addition, breath odour may be value-coded as 'bad'. In 75% of the cases reviewed, decreased self-confidence and insecurity in social and intimate relations led clients to seek treatment at the specialised breath odour clinic. Their doctor, dental hygienist or dentist had treated medical and oral conditions but not resolved their breath odour problem. When a person perceives a constant bad breath problem, she/he uses defence techniques, and may avoid social situations and social relations. This affects a person's well-being.

  3. Sports-Related Maxillofacial Injuries.

    PubMed

    Murphy, Colm; O'Connell, John Edward; Kearns, Gerard; Stassen, Leo

    2015-10-01

    Sports-related maxillofacial injuries contribute a significant proportion of the workload in a maxillofacial unit. The aim of this study was to identify the incidence of maxillofacial sports-related injuries, treatments required, and assess the impact of the injury on future sport participation. A retrospective review was carried out on all maxillofacial trauma referrals from September 1, 2009 to August 31, 2010. Patient records were reviewed and the following variables were recorded: age, sex, sport involved, injury sustained, mechanism of injury, treatment, subsequent participation, and interval before return to sport. The study population included 162 patients with sports-related facial injuries. The most common sporting injuries were as follows: Gaelic football 35.3% (N = 57), soccer 22.3% (N = 36), rugby 12.4% (N = 20), and equine sports 12.4% (N = 20). The most common injury sustained was zygomatic complex fracture 36.4% (N = 59). Mandibular fracture occurred in 20% (N = 33), orbit fracture in 14.2% (N = 23), and nasal bone fracture in 12.3% (N = 20). The most common mechanism of injury was from a clash of heads (23.4%) followed by an elbow to the face (17.2%). The majority of patients (84%) resumed participation in their chosen sport at mean interval of 7.3 weeks (range 1-18 weeks). This study identified a significant number of sporting facial injuries, which presented over 1 year. In total, 113 patients underwent a surgical procedure for the management of their injuries. This study highlights the need to educate all players regarding use of personal protective equipment and adherence to the rules of sports.

  4. Human alcohol-related neuropathology.

    PubMed

    de la Monte, Suzanne M; Kril, Jillian J

    2014-01-01

    Alcohol-related diseases of the nervous system are caused by excessive exposures to alcohol, with or without co-existing nutritional or vitamin deficiencies. Toxic and metabolic effects of alcohol (ethanol) vary with brain region, age/developmental stage, dose, and duration of exposures. In the mature brain, heavy chronic or binge alcohol exposures can cause severe debilitating diseases of the central and peripheral nervous systems, and skeletal muscle. Most commonly, long-standing heavy alcohol abuse leads to disproportionate loss of cerebral white matter and impairments in executive function. The cerebellum (especially the vermis), cortical-limbic circuits, skeletal muscle, and peripheral nerves are also important targets of chronic alcohol-related metabolic injury and degeneration. Although all cell types within the nervous system are vulnerable to the toxic, metabolic, and degenerative effects of alcohol, astrocytes, oligodendrocytes, and synaptic terminals are major targets, accounting for the white matter atrophy, neural inflammation and toxicity, and impairments in synaptogenesis. Besides chronic degenerative neuropathology, alcoholics are predisposed to develop severe potentially life-threatening acute or subacute symmetrical hemorrhagic injury in the diencephalon and brainstem due to thiamine deficiency, which exerts toxic/metabolic effects on glia, myelin, and the microvasculature. Alcohol also has devastating neurotoxic and teratogenic effects on the developing brain in association with fetal alcohol spectrum disorder/fetal alcohol syndrome. Alcohol impairs function of neurons and glia, disrupting a broad array of functions including neuronal survival, cell migration, and glial cell (astrocytes and oligodendrocytes) differentiation. Further progress is needed to better understand the pathophysiology of this exposure-related constellation of nervous system diseases and better correlate the underlying pathology with in vivo imaging and biochemical lesions.

  5. Superconductivity-related insulating behavior.

    PubMed

    Sambandamurthy, G; Engel, L W; Johansson, A; Shahar, D

    2004-03-12

    We present the results of an experimental study of superconducting, disordered, thin films of amorphous indium oxide. These films can be driven from the superconducting phase to a reentrant insulating state by the application of a perpendicular magnetic field (B). We find that the high-B insulator exhibits activated transport with a characteristic temperature, TI. TI has a maximum value (TpI) that is close to the superconducting transition temperature (Tc) at B=0, suggesting a possible relation between the conduction mechanisms in the superconducting and insulating phases. Tp(I) and Tc display opposite dependences on the disorder strength.

  6. Uncertainty Relation and Inseparability Criterion

    NASA Astrophysics Data System (ADS)

    Goswami, Ashutosh K.; Panigrahi, Prasanta K.

    2017-02-01

    We investigate the Peres-Horodecki positive partial transpose criterion in the context of conserved quantities and derive a condition of inseparability for a composite bipartite system depending only on the dimensions of its subsystems, which leads to a bi-linear entanglement witness for the two qubit system. A separability inequality using generalized Schrodinger-Robertson uncertainty relation taking suitable operators, has been derived, which proves to be stronger than the bi-linear entanglement witness operator. In the case of mixed density matrices, it identically distinguishes the separable and non separable Werner states.

  7. [Nutrition-related bone disease].

    PubMed

    Hirota, Kenji; Hirota, Takako

    2006-09-01

    Bone disorders clearly related to nutrition are osteomalacia and osteoporosis. Osteomalacia is caused by a deficiency of vitamin D or a disturbance of its metabolism. Dietary deficiency of phosphate or excess of aluminum or cadmium will also cause osteomalacia. Osteoporosis is associated with low intake of calcium and other nutrients. Dietary copper deficiency might stimulate bone metabolism and increase in hip fractures. Excess vitamin A intake was also associated with lower bone mineral density and higher risk of hip fractures. Excess vitamin D sometimes causes mental simplicity, congenital heart disease and calcification of soft tissue. Therefore not only diet but also drugs and supplements of nutrients should be carefully observed in older women.

  8. Vaccination-related shoulder dysfunction.

    PubMed

    Bodor, Marko; Montalvo, Enoch

    2007-01-08

    We present two cases of shoulder pain and weakness following influenza and pneumococcal vaccine injections provided high into the deltoid muscle. Based on ultrasound measurements, we hypothesize that vaccine injected into the subdeltoid bursa caused a periarticular inflammatory response, subacromial bursitis, bicipital tendonitis and adhesive capsulitis. Resolution of symptoms followed corticosteroid injections to the subacromial space, bicipital tendon sheath and glenohumeral joint, followed by physical therapy. We conclude that the upper third of the deltoid muscle should not be used for vaccine injections, and the diagnosis of vaccination-related shoulder dysfunction should be considered in patients presenting with shoulder pain following a vaccination.

  9. History of asbestos related disease.

    PubMed

    Bartrip, P W J

    2004-02-01

    The first medical article on the hazards of asbestos dust appeared in the British Medical Journal in 1924. Following inquiries by Edward Merewether and Charles Price, the British government introduced regulations to control dangerous dust emissions in UK asbestos factories. Until the 1960s these appeared to have addressed the problem effectively. Only then, with the discoveries that mesothelioma was an asbestos related disease and that workers other than those employed in the dustiest parts of asbestos factories were at risk, were the nature and scale of the hazard reassessed. In Britain, America, and elsewhere new and increasingly strict regulations were enacted.

  10. Acupuncture therapy related cardiac injury.

    PubMed

    Li, Xue-feng; Wang, Xian

    2013-12-01

    Cardiac injury is the most serious adverse event in acupuncture therapy. The causes include needling chest points near the heart, the cardiac enlargement and pericardial effusion that will enlarge the projected area on the body surface and make the proper depth of needling shorter, and the incorrect needling method of the points. Therefore, acupuncture practitioners must be familiar with the points of the heart projected area on the chest and the correct needling methods in order to reduce the risk of acupuncture therapy related cardiac injury.

  11. Nutritional aspects related to endometriosis.

    PubMed

    Halpern, Gabriela; Schor, Eduardo; Kopelman, Alexander

    2015-01-01

    This literature review analyzed the evidence on nutritional aspects related to the pathogenesis and progression of endometriosis. Diets deficient in nutrients result in changes in lipid metabolism, oxidative stress and promote epigenetic abnormalities, that may be involved in the genesis and progression of the disease. Foods rich in omega 3 with anti-inflammatory effects, supplementation with N-acetylcysteine, vitamin D and resveratrol, in addition to the increased consumption of fruits, vegetables (preferably organic) and whole grains exert a protective effect, reducing the risk of development and possible regression of disease. Dietary re-education seems to be a promising tool in the prevention and treatment of endometriosis.

  12. Routing Algorithm Exploits Spatial Relations

    NASA Technical Reports Server (NTRS)

    Okino, Clayton; Jennings, Esther

    2004-01-01

    A recently developed routing algorithm for broadcasting in an ad hoc wireless communication network takes account of, and exploits, the spatial relationships among the locations of nodes, in addition to transmission power levels and distances between the nodes. In contrast, most prior algorithms for discovering routes through ad hoc networks rely heavily on transmission power levels and utilize limited graph-topology techniques that do not involve consideration of the aforesaid spatial relationships. The present algorithm extracts the relevant spatial-relationship information by use of a construct denoted the relative-neighborhood graph (RNG).

  13. Chemokines in cancer related inflammation

    SciTech Connect

    Allavena, Paola; Germano, Giovanni; Marchesi, Federica; Mantovani, Alberto

    2011-03-10

    Chemokines are key players of the cancer-related inflammation. Chemokine ligands and receptors are downstream of genetic events that cause neoplastic transformation and are abundantly expressed in chronic inflammatory conditions which predispose to cancer. Components of the chemokine system affect multiple pathways of tumor progression including: leukocyte recruitment, neo-angiogenesis, tumor cell proliferation and survival, invasion and metastasis. Evidence in pre-clinical and clinical settings suggests that the chemokine system represents a valuable target for the development of innovative therapeutic strategies.

  14. How black holes saved relativity

    NASA Astrophysics Data System (ADS)

    Prescod-Weinstein, Chanda

    2016-02-01

    While there have been many popular-science books on the historical and scientific legacy of Albert Einstein's general theory of relativity, a gap exists in the literature for a definitive, accessible history of the theory's most famous offshoot: black holes. In Black Hole, the science writer Marcia Bartusiak aims for a discursive middle ground, writing solely about black holes at a level suitable for both high-school students and more mature readers while also giving some broader scientific context for black-hole research.

  15. Relative Sizes of Organic Molecules

    NASA Technical Reports Server (NTRS)

    2000-01-01

    This computer graphic depicts the relative complexity of crystallizing large proteins in order to study their structures through x-ray crystallography. Insulin is a vital protein whose structure has several subtle points that scientists are still trying to determine. Large molecules such as insuline are complex with structures that are comparatively difficult to understand. For comparison, a sugar molecule (which many people have grown as hard crystals in science glass) and a water molecule are shown. These images were produced with the Macmolecule program. Photo credit: NASA/Marshall Space Flight Center (MSFC)

  16. Age-related macular degeneration

    PubMed Central

    Querques, Giuseppe; Avellis, Fernando Onofrio; Querques, Lea; Bandello, Francesco; Souied, Eric H

    2011-01-01

    Clinical question: Is there any new knowledge about the pathogenesis and treatment of age-related macular degeneration (AMD)? Results: We now understand better the biochemical and pathological pathways involved in the genesis of AMD. Treatment of exudative AMD is based on intravitreal injection of new antivascular endothelial growth factor drugs for which there does not yet exist a unique recognized strategy of administration. No therapies are actually available for atrophic AMD, despite some experimental new pharmacological approaches. Implementation: strategy of administration, safety of intravitreal injection PMID:21654887

  17. Food-related energy requirements.

    PubMed

    Hirst, E

    1974-04-12

    I have used data from input-output studies to determine the quantities of primary and electric energy consumed in the agricultural, processing, transportation, wholesale and retail trade, and household sectors for personal consumption of food. Before one draws conclusions from these results, it is important to note the assumptions and approximations used in this analysis. First, the economic input-output data published by the Department of Commerce are subject to a number of inaccuracies, including lack of complete coverage for an industry, restriction of data for proprietary reasons, and use of different time periods for different data. Second, aggregation can combine within the same sector industries whose energy intensities differ widely. For example, eating and drinking establishments probably consume more energy per dollar of sales (because of refrigerators, stoves, and freezers) than do department stores. However, both types of establishment are included in retail trade. Thus energy use for food-related retail trade may be underestimated because of aggregation. Third, the energy coefficients are subject to error. In particular, the coefficients for the agricultural and trade sectors are vulnerable because energy use within these sectors is not well documented. Finally, the scaling factor used to estimate food-related energy use for the 1960's is approximate, in that it neglects the possibility that these energy coefficients changed differently with time. Because of these limitations, which are described more fully by Herendeen (6), a number of important issues were not addressed here. such as relative energy requirements for fresh, frozen, and canned vegetables; and for soybeans as compared to beef. This analysis shows that the U.S. food cycle consumes a considerable amount of energy, about 12 percent of the total national energy budget. The residential sector, which accounts for 30 percent of the total, is the most energy-intensive sector in terms of energy

  18. Mitochondrial cardiomyopathy and related arrhythmias.

    PubMed

    Montaigne, David; Pentiah, Anju Duva

    2015-06-01

    Mitochondrial dysfunction has been shown to be involved in the pathophysiology of arrhythmia, not only in inherited cardiomyopathy due to specific mutations in the mitochondrial DNA but also in acquired cardiomyopathy such as ischemic or diabetic cardiomyopathy. This article briefly discusses the basics of mitochondrial physiology and details the mechanisms generating arrhythmias due to mitochondrial dysfunction. The clinical spectrum of inherited and acquired cardiomyopathies associated with mitochondrial dysfunction is discussed followed by general aspects of the management of mitochondrial cardiomyopathy and related arrhythmia. Copyright © 2015 Elsevier Inc. All rights reserved.

  19. [Work-related stress urticaria].

    PubMed

    Landex, Nadia Lander

    2016-12-12

    A medical doctor occasionally experienced itching papular exanthema during work hours. Careful history taking and a diary of symptoms demonstrated an association between the urticaria and stressful work situations. Urticaria can have many triggers, and stress is among the well-known triggers. The usual treatment of urticaria consists of avoiding triggers and, if necessary, antihistamines. Whereas it might be difficult to follow these recommendations in the case of work-related urticaria, the disorder may be perceived as a reminder of work situations which are going awry.

  20. General Relativity and Gravitation, 1989

    NASA Astrophysics Data System (ADS)

    Ashby, Neil; Bartlett, David F.; Wyss, Walker

    2005-10-01

    Part I. Classical Relativity and Gravitation Theory: 1. Global properties of exact solutions H. Friedrich; 2. Numerical relativity T. Nakamura; 3. How fast can a pulsar spin? J. L. Friedman; 4. Colliding waves in general relativity V. Ferrari; Part II. Relativistic Astrophysics, Early Universe, and Classical Cosmology: 5. Observations of cosmic microwave radiation R. B. Partridge; 6. Cosmic microwave background radiation (theory) M. Panek; 7. Inflation and quantum cosmology A. D. Linde; 8. Observations of lensing B. Fort; 9. Gravitational lenses: theory and interpretation R. Blandford; Part III. Experimental Gravitation and Gravitational Waves: 10. Solar system tests of GR: recent results and present plans I. Shapiro; 11. Laser interferometer detectors R. Weiss; 12. Resonant bar gravitational wave experiments G. Pizzella; 13. A non-inverse square law test E. Adelberger; Part IV. Quantum Gravity, Superstrings, Quantum Cosmology: 14. Cosmic strings B. Unruh; 15. String theory as a quantum theory of gravity G. Horowitz; 16. Progress in quantum cosmology J. B. Hartle; 17. Self-duality, quantum gravity, Wilson loops and all that A. V. Ashtekar; Part V. Summary Talk: 18. GR-12 Conference summary J. Ehlers II; Part VI. Reports on Workshops/Symposia: 19. Exact solutions and exact properties of Einstein equations V. Moncrieff; 20. Spinors, twistors and complex methods N. Woodhouse; 21. Alternative gravity theories M. Francaviglia; 22. Asymptotia, singularities and global structure B. G. Schmidt; 23. Radiative spacetimes and approximation methods T. Damour; 24. Algebraic computing M. MacCallum; 25. Numerical relativity J. Centrella; 26. Mathematical cosmology J. Wainwright; 27. The early universe M. Turner; 28. Relativistic astrophysics M. Abramowitz; 29. Astrophysical and observational cosmology B. Carr; 30. Solar system and pulsar tests of gravitation R. Hellings; 31. Earth-based gravitational experiments J. Faller; 32. Resonant bar and microwave gravitational wave