International Nuclear Information System (INIS)
Ogievetsky, O.; Pillin, M.; Schmidke, W.B.; Wess, J.; Zumino, B.
1993-01-01
In this lecture I discuss the algebraic structure of a q-deformed four-vector space. It serves as a good example of quantizing Minkowski space. To give a physical interpretation of such a quantized Minkowski space we construct the Hilbert space representation and find that the relevant time and space operators have a discrete spectrum. Thus the q-deformed Minkowski space has a lattice structure. Nevertheless this lattice structure is compatible with the operation of q-deformed Lorentz transformations. The generators of the q-deformed Lorentz group can be represented as linear operators in the same Hilbert space. (orig.)
Some New Algebraic and Topological Properties of the Minkowski Inverse in the Minkowski Space
Directory of Open Access Journals (Sweden)
Hanifa Zekraoui
2013-01-01
Full Text Available We introduce some new algebraic and topological properties of the Minkowski inverse A⊕ of an arbitrary matrix A∈Mm,n (including singular and rectangular in a Minkowski space μ. Furthermore, we show that the Minkowski inverse A⊕ in a Minkowski space and the Moore-Penrose inverse A+ in a Hilbert space are different in many properties such as the existence, continuity, norm, and SVD. New conditions of the Minkowski inverse are also given. These conditions are related to the existence, continuity, and reverse order law. Finally, a new representation of the Minkowski inverse A⊕ is also derived.
κ-Minkowski representations on Hilbert spaces
International Nuclear Information System (INIS)
Agostini, Alessandra
2007-01-01
The algebra of functions on κ-Minkowski noncommutative space-time is studied as algebra of operators on Hilbert spaces. The representations of this algebra are constructed and classified. This new approach leads to a natural construction of integration in κ-Minkowski space-time in terms of the usual trace of operators
On the instability of Minkowski space
International Nuclear Information System (INIS)
Castagnino, M.A.; Paz, J.P.
1985-01-01
We study the stability of Minkowski space under global conformal fluctuations in the framework of QFT in curved space. We obtain that when a scalar massive free field is present, Minkowski space is an unstable solution of the semiclassical cosmological problem. We also study the consequences of considering a nonlinear gravitational action. (orig.)
The real meaning of complex Minkowski-space world-lines
Energy Technology Data Exchange (ETDEWEB)
Adamo, T M [University of Oxford, Mathematical Institute, 24-29 St Giles, Oxford, OX1 3LB (United Kingdom); Newman, E T, E-mail: newman@pitt.ed [University of Pittsburgh, Department of Physics and Astronomy, Pittsburgh, PA 15213 (United States)
2010-04-07
In connection with the study of shear-free null geodesics in Minkowski space, we investigate the real geometric effects in real Minkowski space that are induced by and associated with complex world-lines in complex Minkowski space. It was already known, in a formal manner, that complex analytic curves in complex Minkowski space induce shear-free null geodesic congruences. Here we look at the direct geometric connections of the complex line and the real structures. Among other items, we show, in particular, how a complex world-line projects into the real Minkowski space in the form of a real shear-free null geodesic congruence.
The real meaning of complex Minkowski-space world-lines
International Nuclear Information System (INIS)
Adamo, T M; Newman, E T
2010-01-01
In connection with the study of shear-free null geodesics in Minkowski space, we investigate the real geometric effects in real Minkowski space that are induced by and associated with complex world-lines in complex Minkowski space. It was already known, in a formal manner, that complex analytic curves in complex Minkowski space induce shear-free null geodesic congruences. Here we look at the direct geometric connections of the complex line and the real structures. Among other items, we show, in particular, how a complex world-line projects into the real Minkowski space in the form of a real shear-free null geodesic congruence.
Flat slices in Minkowski space
Murchadha, Niall Ó.; Xie, Naqing
2015-03-01
Minkowski space, flat spacetime, with a distance measure in natural units of d{{s}2}=-d{{t}2}+d{{x}2}+d{{y}2}+d{{z}2}, or equivalently, with spacetime metric diag(-1, +1, +1, +1), is recognized as a fundamental arena for physics. The Poincaré group, the set of all rigid spacetime rotations and translations, is the symmetry group of Minkowski space. The action of this group preserves the form of the spacetime metric. Each t = constant slice of each preferred coordinate system is flat. We show that there are also nontrivial non-singular representations of Minkowski space with complete flat slices. If the embedding of the flat slices decays appropriately at infinity, the only flat slices are the standard ones. However, if we remove the decay condition, we find non-trivial flat slices with non-vanishing extrinsic curvature. We write out explicitly the coordinate transformation to a frame with such slices.
Minkowski space-time is locally extendible
International Nuclear Information System (INIS)
Beem, J.K.
1980-01-01
An example of a real analytic local extension of Minkowski space-time is given in this note. This local extension is not across points of the b-boundary since Minkowski space-time has an empty b-boundary. Furthermore, this local extension is not across points of the causal boundary. The example indicates that the concept of local inextendibility may be less useful than originally envisioned. (orig.)
Local field theory on κ-Minkowski space, star products and noncommutative translations
International Nuclear Information System (INIS)
Kosinski, P.; Maslanka, P.; Lukierski, J.
2000-01-01
We consider local field theory on κ-deformed Minkowski space which is an example of solvable Lie-algebraic noncommutative structure. Using integration formula over κ-Minkowski space and κ-deformed Fourier transform, we consider for deformed local fields the reality conditions as well as deformation of action functionals in standard Minkowski space. We present explicit formulas for two equivalent star products describing CBH quantization of field theory on κ-Minkowski space. We express also via star product technique the noncommutative translations in κ-Minkowski space by commutative translations in standard Minkowski space. (author)
Space-like surfaces with free boundary in the Lorentz-Minkowski space
International Nuclear Information System (INIS)
López, R; Pyo, J
2012-01-01
We investigate a variational problem in the Lorentz-Minkowski space L 3 whose critical points are space-like surfaces with a constant mean curvature and making a constant contact angle with a given support surface along its common boundary. We show that if the support surface is a pseudosphere, then the surface is a planar disc or a hyperbolic cap. We also study the problem of space-like hypersurfaces with free boundary in the higher dimensional Lorentz-Minkowski space L n+1 . (paper)
Twistor space, Minkowski space and the conformal group
International Nuclear Information System (INIS)
Broek, P.M. van den
1983-01-01
It is shown that the conformal group of compactified Minkowski space is isomorphic to a group of rays of semilinear transformations of twistor space. The action of the conformal group on twistor space is given by an explicit realisation of this isomorphism. In this way we determine the transformation of twistor space under space inversion and time inversion. (orig.)
Twistor space, Minkowski space and the conformal group
van den Broek, P.M.
1983-01-01
It is shown that the conformal group of compactified Minkowski space is isomorphic to a group of rays of semilinear transformations of twistor space. The action of the conformal group on twistor space is given by an explicit realisation of this isomorphism. In this way we determine the
What does the Euclidean pseudoparticle do in Minkowski space
International Nuclear Information System (INIS)
Ju, I.
1978-08-01
Self dual pseudoparticle solutions for the classical Yang--Mills field equation with finite action have been constructed in Minkowski space. It is shown that the topological structures apparent in Euclidean space are no longer present in Minkowski space. Topological charges become fractional leading to the unquantized axial charge violation in the process involving fermions. 17 references
We live in the quantum 4-dimensional Minkowski space-time
Hwang, W-Y. Pauchy
2015-01-01
We try to define "our world" by stating that "we live in the quantum 4-dimensional Minkowski space-time with the force-fields gauge group $SU_c(3) \\times SU_L(2) \\times U(1) \\times SU_f(3)$ built-in from the outset". We begin by explaining what "space" and "time" are meaning for us - the 4-dimensional Minkowski space-time, then proceeding to the quantum 4-dimensional Minkowski space-time. In our world, there are fields, or, point-like particles. Particle physics is described by the so-called ...
Petkov, Vesselin
2010-01-01
This volume is dedicated to the centennial anniversary of Minkowski's discovery of spacetime. It contains selected papers by physicists and philosophers on the Nature and Ontology of Spacetime. The first six papers, comprising Part I of the book, provide examples of the impact of Minkowski's spacetime representation of special relativity on the twentieth century physics. Part II also contains six papers which deal with implications of Minkowski's ideas for the philosophy of space and time. The last part is represented by two papers which explore the influence of Minkowski's ideas beyond the philosophy of space and time.
DUAL TIMELIKE NORMAL AND DUAL TIMELIKE SPHERICAL CURVES IN DUAL MINKOWSKI SPACE
ÖNDER, Mehmet
2009-01-01
Abstract: In this paper, we give characterizations of dual timelike normal and dual timelike spherical curves in the dual Minkowski 3-space and we show that every dual timelike normal curve is also a dual timelike spherical curve. Keywords: Normal curves, Dual Minkowski 3-Space, Dual Timelike curves. Mathematics Subject Classifications (2000): 53C50, 53C40. DUAL MINKOWSKI UZAYINDA DUAL TIMELIKE NORMAL VE DUAL TIMELIKE KÜRESEL EĞRİLER Özet: Bu çalışmada, dual Minkowski 3-...
Chiral-symmetry breaking and confinement in Minkowski space
Energy Technology Data Exchange (ETDEWEB)
Biernat, Elmer P. [Unibersidade de Lisboa, 104-001, Lisboa, Portugal; Pena, M. T. [Universidade de Lisboa, 1049-001, Lisboa, Portugal; Ribiero, J. E. [Universidade de Lisboa, 1049-001 Lisboa, Portugal; Stadler, Alfred [Universidade de Ãvora, 7000-671 Ãvora, Portugal; Universidade de Lisboa, 1049-001 Lisboa, Portugal; Gross, Franz [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2016-01-01
We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab.
Chiral-symmetry breaking and confinement in Minkowski space
International Nuclear Information System (INIS)
Biernat, Elmar P.; Peña, M. T.; Ribeiro, J. E.; Stadler, Alfred; Gross, Franz
2016-01-01
We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab
Chiral-symmetry breaking and confinement in Minkowski space
Energy Technology Data Exchange (ETDEWEB)
Biernat, Elmar P. [Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Peña, M. T. [Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Departamento de Física, Instituto Superior Técnico (IST), Universidadede Lisboa, 1049-001 Lisboa (Portugal); Ribeiro, J. E. [Centro de Física das Interações Fundamentais (CFIF), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Stadler, Alfred [Departamento de Física, Universidade de Évora, 7000-671 Évora (Portugal); Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa, 1049-001 Lisboa (Portugal); Gross, Franz [Thomas Jefferson National Accelerator Facility (JLab), Newport News, Virginia 23606 (United States)
2016-01-22
We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the axial-vector Ward-Takahashi identity we show that our model satisfies the Adler-zero constraint imposed by chiral symmetry. For this model, our Minkowski-space results of the dressed quark mass function are compared to lattice QCD data obtained in Euclidean space. The mass function is then used in the calculation of the electromagnetic pion form factor in relativistic impulse approximation, and the results are presented and compared with the experimental data from JLab.
Star product realizations of kappa-Minkowski space
DEFF Research Database (Denmark)
Durhuus, Bergfinnur; Sitarz, Andrzej
2013-01-01
We define a family of star products and involutions associated with κ -Minkowski space. Applying corresponding quantization maps we show that these star products restricted to a certain space of Schwartz functions have isomorphic Banach algebra completions. For two particular star products...
From Discrete Space-Time to Minkowski Space: Basic Mechanisms, Methods and Perspectives
Finster, Felix
This survey article reviews recent results on fermion systems in discrete space-time and corresponding systems in Minkowski space. After a basic introduction to the discrete setting, we explain a mechanism of spontaneous symmetry breaking which leads to the emergence of a discrete causal structure. As methods to study the transition between discrete space-time and Minkowski space, we describe a lattice model for a static and isotropic space-time, outline the analysis of regularization tails of vacuum Dirac sea configurations, and introduce a Lorentz invariant action for the masses of the Dirac seas. We mention the method of the continuum limit, which allows to analyze interacting systems. Open problems are discussed.
Explicit Minkowski invariance and differential calculus in the quantum space-time
International Nuclear Information System (INIS)
Xu Zhan.
1991-11-01
In terms of the R-circumflex matrix of the quantum group SL q (2), the explicit Minkowski coordinate commutation relations in the four-dimensional quantum space-time are given, and the invariance of the Minkowski metric is shown. The differential calculus in this quantum space-time is discussed and the corresponding commutation relations are proposed. (author). 17 refs
Chiral symmetry breaking and confinement in Minkowski space QED2+1
International Nuclear Information System (INIS)
Sauli, V.; Batiz, Z.
2010-01-01
Without any analytical assumption we solve the ladder QED2+1 in Minkowski space. Obtained complex fermion propagator exhibits confinement in the sense that it has no pole. Further, we transform Greens functions to the Temporal Euclidean space, wherein we show that in the special case of ladder QED2+1 the solution is fully equivalent to the Minkowski one. Obvious invalidity of Wick rotation is briefly discussed. The infrared value of the dynamical mass is compared with other known approaches, e. g. with the standard Euclidean calculation. We have presented for the first analysis of the electron gap equation in Minkowski and Temporal Euclidean space. The dynamical generation of imaginary part of the fermion mass leads to the absence of Khallen-Lehmann representation, providing thus confining solution for all value of m. Apart very small κ the real pole in the propagator is absent as well. Similarly to Euclidean QED3 Minkowski QED2+1 exhibits spontaneous chiral symmetry breaking the mass function has nontrivial solution in the limit m = 0, however the mass is complex function. Furthermore, we compare with QED solved in similar approximation in spacelike Euclidean and Temporal Euclidean space. As a interesting results, although based on the simple ladder approximation, is the proof of the exact equivalence between the theories defined in Minkowski 2+1 and 3D Temporal Euclidean space. We expect large quantitative changes when the polarization effect is taken account, especially the existence of critical number of flavors can be different when compared to the known Euclidean space estimates. Opposite to naive belief we showed and explained that the Wick rotation -the well known calculational trick in quantum theory- provides continuation of Schwinger function of the Euclidean theory which do not correspond with the Greens function calculated directly in the original Minkowski space. We can note our finding has a little to do with the know usefulness of various
Realizations of κ-Minkowski space, Drinfeld twists, and related symmetry algebras
Energy Technology Data Exchange (ETDEWEB)
Juric, Tajron; Meljanac, Stjepan; Pikutic, Danijel [Ruder Boskovic Institute, Theoretical Physics Division, Zagreb (Croatia)
2015-11-15
Realizations of κ-Minkowski space linear in momenta are studied for time-, space- and light-like deformations. We construct and classify all such linear realizations and express them in terms of the gl(n) generators. There are three one-parameter families of linear realizations for timelike and space-like deformations, while for light-like deformations, there are only four linear realizations. The relation between a deformed Heisenberg algebra, the star product, the coproduct of momenta, and the twist operator is presented. It is proved that for each linear realization there exists a Drinfeld twist satisfying normalization and cocycle conditions. κ-Deformed igl(n)-Hopf algebras are presented for all cases. The κ-Poincare-Weyl and κ-Poincare-Hopf algebras are discussed. The left-right dual κ-Minkowski algebra is constructed from the transposed twists. The corresponding realizations are nonlinear. All Drinfeld twists related to κ-Minkowski space are obtained from our construction. Finally, some physical applications are discussed. (orig.)
Realizations of κ-Minkowski space, Drinfeld twists, and related symmetry algebras
International Nuclear Information System (INIS)
Juric, Tajron; Meljanac, Stjepan; Pikutic, Danijel
2015-01-01
Realizations of κ-Minkowski space linear in momenta are studied for time-, space- and light-like deformations. We construct and classify all such linear realizations and express them in terms of the gl(n) generators. There are three one-parameter families of linear realizations for timelike and space-like deformations, while for light-like deformations, there are only four linear realizations. The relation between a deformed Heisenberg algebra, the star product, the coproduct of momenta, and the twist operator is presented. It is proved that for each linear realization there exists a Drinfeld twist satisfying normalization and cocycle conditions. κ-Deformed igl(n)-Hopf algebras are presented for all cases. The κ-Poincare-Weyl and κ-Poincare-Hopf algebras are discussed. The left-right dual κ-Minkowski algebra is constructed from the transposed twists. The corresponding realizations are nonlinear. All Drinfeld twists related to κ-Minkowski space are obtained from our construction. Finally, some physical applications are discussed. (orig.)
Revisiting the conformal invariance of the scalar field: From Minkowski space to de Sitter space
International Nuclear Information System (INIS)
Huguet, E.; Queva, J.; Renaud, J.
2008-01-01
In this article, we clarify the link between the conformal (i.e. Weyl) correspondence from the Minkowski space to the de Sitter space and the conformal [i.e. SO(2,d)] invariance of the conformal scalar field on both spaces. We exhibit the realization on de Sitter space of the massless scalar representation of SO(2,d). It is obtained from the corresponding representation in Minkowski space through an intertwining operator inherited from the Weyl relation between the two spaces. The de Sitter representation is written in a form which allows one to take the point of view of a Minkowskian observer who sees the effect of curvature through additional terms
Extensions of the stability theorem of the Minkowski space in general relativity
Bieri, Lydia
2009-01-01
A famous result of Christodoulou and Klainerman is the global nonlinear stability of Minkowski spacetime. In this book, Bieri and Zipser provide two extensions to this result. In the first part, Bieri solves the Cauchy problem for the Einstein vacuum equations with more general, asymptotically flat initial data, and describes precisely the asymptotic behavior. In particular, she assumes less decay in the power of r and one less derivative than in the Christodoulou-Klainerman result. She proves that in this case, too, the initial data, being globally close to the trivial data, yields a solution which is a complete spacetime, tending to the Minkowski spacetime at infinity along any geodesic. In contrast to the original situation, certain estimates in this proof are borderline in view of decay, indicating that the conditions in the main theorem on the decay at infinity on the initial data are sharp. In the second part, Zipser proves the existence of smooth, global solutions to the Einstein-Maxwell equations. A n...
International Nuclear Information System (INIS)
Loran, Farhang
2004-01-01
We solve Klein-Gordon equation for massless scalars on (d+1)-dimensional Minkowski (Euclidean) space in terms of the Cauchy data on the hypersurface t=0. By inserting the solution into the action of massless scalars in Minkowski (Euclidean) space we obtain the action of dual theory on the boundary t=0 which is exactly the holographic dual of conformally coupled scalars on (d+1)-dimensional (Euclidean anti) de Sitter space obtained in (A)dS/CFT correspondence. The observed equivalence of dual theories is explained using the one-to-one map between conformally coupled scalar fields on Minkowski (Euclidean) space and (Euclidean anti) de Sitter space which is an isomorphism between the hypersurface t=0 of Minkowski (Euclidean) space and the boundary of (A)dS space
Dispersion relations in quantum electrodynamics on the noncommutative Minkowski space
Energy Technology Data Exchange (ETDEWEB)
Zahn, J.W.
2006-12-15
We study field theories on the noncommutative Minkowski space with noncommuting time. The focus lies on dispersion relations in quantized interacting models in the Yang-Feldman formalism. In particular, we compute the two-point correlation function of the field strength in noncommutative quantum electrodynamics to second order. At this, we take into account the covariant coordinates that allow the construction of local gauge invariant quantities (observables). It turns out that this does not remove the well-known severe infrared problem, as one might have hoped. Instead, things become worse, since nonlocal divergences appear. We also show that these cancel in a supersymmetric version of the theory if the covariant coordinates are adjusted accordingly. Furthermore, we study the {phi}{sup 3} and the Wess-Zumino model and show that the distortion of the dispersion relations is moderate for parameters typical for the Higgs field. We also discuss the formulation of gauge theories on noncommutative spaces and study classical electrodynamics on the noncommutative Minkowski space using covariant coordinates. In particular, we compute the change of the speed of light due to nonlinear effects in the presence of a background field. Finally, we examine the so-called twist approach to quantum field theory on the noncommutative Minkowski space and point out some conceptual problems of this approach. (orig.)
Dispersion relations in quantum electrodynamics on the noncommutative Minkowski space
International Nuclear Information System (INIS)
Zahn, J.W.
2006-12-01
We study field theories on the noncommutative Minkowski space with noncommuting time. The focus lies on dispersion relations in quantized interacting models in the Yang-Feldman formalism. In particular, we compute the two-point correlation function of the field strength in noncommutative quantum electrodynamics to second order. At this, we take into account the covariant coordinates that allow the construction of local gauge invariant quantities (observables). It turns out that this does not remove the well-known severe infrared problem, as one might have hoped. Instead, things become worse, since nonlocal divergences appear. We also show that these cancel in a supersymmetric version of the theory if the covariant coordinates are adjusted accordingly. Furthermore, we study the Φ 3 and the Wess-Zumino model and show that the distortion of the dispersion relations is moderate for parameters typical for the Higgs field. We also discuss the formulation of gauge theories on noncommutative spaces and study classical electrodynamics on the noncommutative Minkowski space using covariant coordinates. In particular, we compute the change of the speed of light due to nonlinear effects in the presence of a background field. Finally, we examine the so-called twist approach to quantum field theory on the noncommutative Minkowski space and point out some conceptual problems of this approach. (orig.)
Brownian motion, Minkowski space and principle of special relativity
International Nuclear Information System (INIS)
Caubet, J.-P.
1977-01-01
From the assumption that the brownian diffusion locally behaves like an ideal gas (pressure being inversely proportional to volume according to Boyle's law) one can deduce the signature +++- of the Minkowski space, the Lorentz addition of velocities, and the principle of special relativity [fr
Zero mean curvature surfaces of mixed type in Minkowski space
International Nuclear Information System (INIS)
Klyachin, V A
2003-01-01
We investigate zero mean curvature surfaces in the Minkowski space R 3 1 such that their first fundamental quadratic form changes signature. Part of such a surface is space-like and part is time-like. We obtain complete information about the structure of the set of points where the surface changes type and prove the related existence and uniqueness theorems
A new method for calculation of traces of Dirac γ-matrices in Minkowski space
International Nuclear Information System (INIS)
Bondarev, Alexander L.
2006-01-01
This paper presents some relations for orthonormal bases in the Minkowski space and isotropic tetrads constructed from the vectors of these bases. As an example of an application of the obtained formulae, in particular recursion relations, a new method is proposed to calculate traces of Dirac γ-matrices in the Minkowski space. Compared to the classical algorithms, the new method results in more compact expressions for the traces. Specifically, it may be easily implemented as a simple yet efficient computer algorithm
Minkowski Spacetime A Hundred Years Later
Petkov, Vesselin
2009-01-01
This volume is dedicated to the one hundredth anniversary of the publication of Hermann Minkowski's paper "Space and Time" in 1909. His work on the spacetime representation of special relativity had a huge impact on the twentieth century physics to the extent that modern physics would be impossible without the notion of spacetime. While there is consensus on the mathematical significance of spacetime in theoretical physics, for a hundred years there has been no consensus on the nature of spacetime itself. We owe Minkowski a clear answer to the question of the nature of spacetime -- whether it is only a mathematical space or represents a real four-dimensional world. A century after its publication the original Minkowski paper still represents an enrichment to the physicists, especially the relativists, who read it with the intent to fully investigate the depth of Minkowski's ideas on space and time and the physical meaning of special relativity. The volume begins with an excellent retranslation of Minkowski's ...
Dimensional reduction from entanglement in Minkowski space
International Nuclear Information System (INIS)
Brustein, Ram; Yarom, Amos
2005-01-01
Using a quantum field theoretic setting, we present evidence for dimensional reduction of any sub-volume of Minkowksi space. First, we show that correlation functions of a class of operators restricted to a sub-volume of D-dimensional Minkowski space scale as its surface area. A simple example of such area scaling is provided by the energy fluctuations of a free massless quantum field in its vacuum state. This is reminiscent of area scaling of entanglement entropy but applies to quantum expectation values in a pure state, rather than to statistical averages over a mixed state. We then show, in a specific case, that fluctuations in the bulk have a lower-dimensional representation in terms of a boundary theory at high temperature. (author)
Singularities of lightcone pedals of spacelike curves in Lorentz-Minkowski 3-space
Directory of Open Access Journals (Sweden)
Chen Liang
2016-01-01
Full Text Available In this paper, geometric properties of spacelike curves on a timelike surface in Lorentz-Minkowski 3-space are investigated by applying the singularity theory of smooth functions from the contact viewpoint.
q-conformally covariant q-Minkowski space-time and invariant equations
International Nuclear Information System (INIS)
Dobrev, V.K.
1997-09-01
We present explicitly the covariant action of the q-conformal algebra on the q-Minkowski space we proposed earlier. We also present some q-conformally invariant equations, namely a hierarchy of q-Maxwell equations, and also a q-d'Alembert equation, proposed earlier by us, in a form different from the original . (author). 19 refs
The variation of the density functions on chaotic spheres in chaotic space-like Minkowski space time
International Nuclear Information System (INIS)
El-Ahmady, A.E.
2007-01-01
In this article we introduce types of chaotic spheres in chaotic space-like Minkowski space time M n+1 . The variations of the density functions under the folding of these chaotic spheres are defined. The foldings restriction imposed on the density function are also discussed. The relations between the folding of geometry and pure chaotic manifolds are deduced. Some theorems concerning these relations are presented
Fermi Coordinates of an Observer Moving in a Circle in Minkowski Space: Apparent Behavior of Clocks
National Research Council Canada - National Science Library
Bahder, Thomas
2000-01-01
Space-time coordinate transformations valid for arbitrarily long coordinate time are derived from global Minkowski coordinates to the Fermi coordinates of an observer moving in a circle in three-dimensional space...
Quantum interest in (3+1)-dimensional Minkowski space
International Nuclear Information System (INIS)
Abreu, Gabriel; Visser, Matt
2009-01-01
The so-called 'quantum inequalities', and the 'quantum interest conjecture', use quantum field theory to impose significant restrictions on the temporal distribution of the energy density measured by a timelike observer, potentially preventing the existence of exotic phenomena such as 'Alcubierre warp drives' or 'traversable wormholes'. Both the quantum inequalities and the quantum interest conjecture can be reduced to statements concerning the existence or nonexistence of bound states for a certain one-dimensional quantum mechanical pseudo-Hamiltonian. Using this approach, we shall provide a simple variational proof of one version of the quantum interest conjecture in (3+1)-dimensional Minkowski space.
Tensor spherical harmonics and tensor multipoles. II. Minkowski space
International Nuclear Information System (INIS)
Daumens, M.; Minnaert, P.
1976-01-01
The bases of tensor spherical harmonics and of tensor multipoles discussed in the preceding paper are generalized in the Hilbert space of Minkowski tensor fields. The transformation properties of the tensor multipoles under Lorentz transformation lead to the notion of irreducible tensor multipoles. We show that the usual 4-vector multipoles are themselves irreducible, and we build the irreducible tensor multipoles of the second order. We also give their relations with the symmetric tensor multipoles defined by Zerilli for application to the gravitational radiation
On Bäcklund transformation and vortex filament equation for null Cartan curve in Minkowski 3-space
Energy Technology Data Exchange (ETDEWEB)
Grbović, Milica, E-mail: milica.grbovic@kg.ac.rs; Nešović, Emilija, E-mail: nesovickg@sbb.rs [University of Kragujevac, Faculty of Science, Department of Mathematics and Informatics (Serbia)
2016-12-15
In this paper we introduce Bäcklund transformation of a null Cartan curve in Minkowski 3-space as a transformation which maps a null Cartan helix to another null Cartan helix, congruent to the given one. We also give the sufficient conditions for a transformation between two null Cartan curves in the Minkowski 3-space such that these curves have equal constant torsions. By using the Da Rios vortex filament equation, based on localized induction approximation, we derive the vortex filament equation for a null Cartan curve and obtain evolution equation for it’s torsion. As an application, we show that Cartan’s frame vectors generate new solutions of the Da Rios vortex filament equation.
Spinors in self-dual Yang-Mills fields in minkowski space
International Nuclear Information System (INIS)
Pervushin, V.N.
1981-01-01
Yang-Mills theory with infrared divergences removed by spontaneous vacuum symmetry breaking is considered. The corresponding vacuum fields are self-dual and are defined in the Minkowski space. The complete set of solutions of Dirac equations with self-dual fields, depending on certain arbitrary function, is found. Physical observables (charge, energy, spin) for the spinor fields within the self-dual vacuum are calculated and a Hermitean Hamiltonian is obtained. The physical picture corresponds to a relativistic generalization of the hadron bag model [ru
Toward the classification of differential calculi on κ-Minkowski space and related field theories
Energy Technology Data Exchange (ETDEWEB)
Jurić, Tajron; Meljanac, Stjepan; Pikutić, Danijel [Ruđer Bošković Institute, Theoretical Physics Division,Bijenička c.54, HR-10002 Zagreb (Croatia); Štrajn, Rina [Dipartimento di Matematica e Informatica, Università di Cagliari,viale Merello 92, I-09123 Cagliari (Italy); INFN, Sezione di Cagliari,Cagliari (Italy)
2015-07-13
Classification of differential forms on κ-Minkowski space, particularly, the classification of all bicovariant differential calculi of classical dimension is presented. By imposing super-Jacobi identities we derive all possible differential algebras compatible with the κ-Minkowski algebra for time-like, space-like and light-like deformations. Embedding into the super-Heisenberg algebra is constructed using non-commutative (NC) coordinates and one-forms. Particularly, a class of differential calculi with an undeformed exterior derivative and one-forms is considered. Corresponding NC differential calculi are elaborated. Related class of new Drinfeld twists is proposed. It contains twist leading to κ-Poincaré Hopf algebra for light-like deformation. Corresponding super-algebra and deformed super-Hopf algebras, as well as the symmetries of differential algebras are presented and elaborated. Using the NC differential calculus, we analyze NC field theory, modified dispersion relations, and discuss further physical applications.
Relativistic helicity and link in Minkowski space-time
International Nuclear Information System (INIS)
Yoshida, Z.; Kawazura, Y.; Yokoyama, T.
2014-01-01
A relativistic helicity has been formulated in the four-dimensional Minkowski space-time. Whereas the relativistic distortion of space-time violates the conservation of the conventional helicity, the newly defined relativistic helicity conserves in a barotropic fluid or plasma, dictating a fundamental topological constraint. The relation between the helicity and the vortex-line topology has been delineated by analyzing the linking number of vortex filaments which are singular differential forms representing the pure states of Banach algebra. While the dimension of space-time is four, vortex filaments link, because vorticities are primarily 2-forms and the corresponding 2-chains link in four dimension; the relativistic helicity measures the linking number of vortex filaments that are proper-time cross-sections of the vorticity 2-chains. A thermodynamic force yields an additional term in the vorticity, by which the vortex filaments on a reference-time plane are no longer pure states. However, the vortex filaments on a proper-time plane remain to be pure states, if the thermodynamic force is exact (barotropic), thus, the linking number of vortex filaments conserves
Green's functions in Bianchi type-I spaces. Relation between Minkowski and Euclidean approaches
International Nuclear Information System (INIS)
Bukhbinder, I.L.; Kirillova, E.N.
1988-01-01
A theory is considered for a free scalar field with a conformal connection in a curved space-time with a Bianchi type-I metric. A representation is obtained for the Green's function G∼ in in in the form of an integral of a Schwinger-DeWitt kernel along a contour in a plane of complex-valued proper time. It is shown how as transition may be accomplished from Green's functions in space with the Euclidean signature to Green's functions in space with Minkowski signature and vice versa
Blaschke- and Minkowski-endomorphisms of convex bodies
DEFF Research Database (Denmark)
Kiderlen, Markus
2006-01-01
We consider maps of the family of convex bodies in Euclidean d-dimensional space into itself that are compatible with certain structures on this family: A Minkowski-endomorphism is a continuous, Minkowski-additive map that commutes with rotations. For d>2, a representation theorem for such maps......-endomorphisms, where additivity is now understood with respect to Blaschke-addition. Using a special mixed volume, an adjoining operator can be introduced. This operator allows one to identify the class of Blaschke-endomorphisms with the class of weakly monotonic, non-degenerate and translation-covariant Minkowski...
International Nuclear Information System (INIS)
Ivanov, I. P.
2008-01-01
We continue to explore the consequences of the recently discovered Minkowski space structure of the Higgs potential in the two-Higgs-doublet model. Here, we focus on the vacuum properties. The search for extrema of the Higgs potential is reformulated in terms of 3-quadrics in the 3+1-dimensional Minkowski space. We prove that 2HDM cannot have more than two local minima in the orbit space and that a twice-degenerate minimum can arise only via spontaneous violation of a discrete symmetry of the Higgs potential. Investigating topology of the 3-quadrics, we give concise criteria for existence of noncontractible paths in the Higgs orbit space. We also study explicit symmetries of the Higgs potential/Lagrangian and their spontaneous violation from a wider perspective than usual
Algebrodynamics over complex space and phase extension of the Minkowski geometry
International Nuclear Information System (INIS)
Kassandrov, V. V.
2009-01-01
First principles should predetermine physical geometry and dynamics both together. In the 'algebrodynamics' they follow solely from the properties of biquaternion algebra B and the analysis over B. We briefly present the algebrodynamics over Minkowski background based on a nonlinear generalization to B of the Cauchi-Riemann analyticity conditions. Further, we consider the effective real geometry uniquely resulting from the structure of B multiplication and found it to be of the Minkowski type, with an additional phase invariant. Then we pass to study the primordial dynamics that takes place in the complex B space and brings into consideration a number of remarkable structures: an ensemble of identical correlated matter pre-elements ('duplicons'), caustic-like signals (interaction carriers), a concept of random complex time resulting in irreversibility of physical time at macrolevel, etc. In partucular, the concept of 'dimerous electron' naturally arises in the framework of complex algebrodynamics and, together with the above-mentioned phase invariant, allows for a novel approach to explanation of quantum interference phenomena alternative to recently accepted wave-particle dualism paradigm.
Yang-Feldman formalism on noncommutative Minkowski space
Energy Technology Data Exchange (ETDEWEB)
Doescher, C.
2006-12-15
We examine quantum field theory on noncummutative spacetime. For this we choose an approach which lives explicitly on the noncommutative Minkowski space, namely the Yang-Feldman formalism. Here the ansatz is to try to solve the field equation of the quantum fields. In this setting we first take a look at an additional mass term, and use this to discuss possible IR cutoffs. We find classes of IR cutoffs which indeed yield the expected limit. Furthermore, we look at interacting models, namely the {phi}{sup 3} model in four and six dimensions, the {phi}{sup 4} model and the Wess-Zumino model. For these we calculate dispersion relations. We see that there exist huge differences in the orders of magnitude between logarithmically and quadratically divergent models. Integrals which are made finite by twisting factors are calculated rigorously in the sense of the theory of oscillatory integrals. (orig.)
The bicovariant differential calculus on the κ-Poincare group and on the κ-Minkowski space
International Nuclear Information System (INIS)
Kosinski, P.; Maslanka, P.; Sobczyk, J.
1996-01-01
The bicovariant differential calculus on the four-dimensional κ-Poincare group and the corresponding Lie-algebra-like structure are described. The differential calculus on the n-dimensional κ-Minkowski space covariant under the action of the κ-Poincare group was constructed. 5 refs
Covariant differential calculus on quantum Minkowski space and the q-analogue of Dirac equation
International Nuclear Information System (INIS)
Song Xingchang; Academia Sinica, Beijing
1992-01-01
The covariant differential calculus on the quantum Minkowski space is presented with the help of the generalized Wess-Zumino method and the quantum Pauli matrices and quantum Dirac matrices are constructed parallel to those in the classical case. Combining these two aspects a q-analogue of Dirac equation follows directly. (orig.)
Description of surfaces associated with Grassmannian sigma models on Minkowski space
International Nuclear Information System (INIS)
Grundland, A.M.; Snobl, L.
2005-01-01
We construct and investigate smooth orientable surfaces in su(N) algebras. The structural equations of surfaces associated with Grassmannian sigma models on Minkowski space are studied using moving frames adapted to the surfaces. The first and second fundamental forms of these surfaces as well as the relations between them as expressed in the Gauss-Weingarten and Gauss-Codazzi-Ricci equations are found. The scalar curvature and the mean curvature vector expressed in terms of a solution of Grassmanian sigma model are obtained
Lie-deformed quantum Minkowski spaces from twists: Hopf-algebraic versus Hopf-algebroid approach
Lukierski, Jerzy; Meljanac, Daniel; Meljanac, Stjepan; Pikutić, Danijel; Woronowicz, Mariusz
2018-02-01
We consider new Abelian twists of Poincare algebra describing nonsymmetric generalization of the ones given in [1], which lead to the class of Lie-deformed quantum Minkowski spaces. We apply corresponding twist quantization in two ways: as generating quantum Poincare-Hopf algebra providing quantum Poincare symmetries, and by considering the quantization which provides Hopf algebroid describing class of quantum relativistic phase spaces with built-in quantum Poincare covariance. If we assume that Lorentz generators are orbital i.e. do not describe spin degrees of freedom, one can embed the considered generalized phase spaces into the ones describing the quantum-deformed Heisenberg algebras.
International Nuclear Information System (INIS)
Silva O, G.; Garcia G, P.
2004-01-01
In this work we describe the procedure to obtain all the family of third order ordinary differential equations connected by a contact transformation such that in their spaces of solutions is defined a conformal three dimensional Minkowski metric. (Author)
From Euclidean to Minkowski space with the Cauchy-Riemann equations
International Nuclear Information System (INIS)
Gimeno-Segovia, Mercedes; Llanes-Estrada, Felipe J.
2008-01-01
We present an elementary method to obtain Green's functions in non-perturbative quantum field theory in Minkowski space from Green's functions calculated in Euclidean space. Since in non-perturbative field theory the analytical structure of amplitudes often is unknown, especially in the presence of confined fields, dispersive representations suffer from systematic uncertainties. Therefore, we suggest to use the Cauchy-Riemann equations, which perform the analytical continuation without assuming global information on the function in the entire complex plane, but only in the region through which the equations are solved. We use as example the quark propagator in Landau gauge quantum chromodynamics, which is known from lattice and Dyson-Schwinger studies in Euclidean space. The drawback of the method is the instability of the Cauchy-Riemann equations against high-frequency noise,which makes it difficult to achieve good accuracy. We also point out a few curious details related to the Wick rotation. (orig.)
Dual transformations of the non-abelian fields in Minkowsky, Euclid, and Galilei-Newton spaces
International Nuclear Information System (INIS)
Tolkaehev, E.A.; Kurochkin, Y.A.; Trequbovich, A.Y.
1991-01-01
In this paper it is shown that the generalization of the Yang-Mills equations in Minkowsky space to the case of the biquaternions over dual and double numbers enables one to define the corresponding representations of the Galilei and SO(4) groups in a rather natural way. it makes construction of the non-Abelian field equations in Euclidean and Galilei-Newton spaces possible and proves their invariance under generalized dual transformations by use of the analogy with the Abelian gauge
DEFF Research Database (Denmark)
Brander, David; Rossman, Wayne; Schmitt, Nicholas
2010-01-01
We give an infinite dimensional generalized Weierstrass representation for spacelike constant mean curvature (CMC) surfaces in Minkowski 3-space $\\R^{2,1}$. The formulation is analogous to that given by Dorfmeister, Pedit and Wu for CMC surfaces in Euclidean space, replacing the group $SU_2$ with...
Energy Technology Data Exchange (ETDEWEB)
Silva O, G.; Garcia G, P. [Facultad de Ciencias Fisico Matematicas de la Universidad Autonoma de Puebla, A.P. 1152, 72001 Puebla (Mexico)
2004-07-01
In this work we describe the procedure to obtain all the family of third order ordinary differential equations connected by a contact transformation such that in their spaces of solutions is defined a conformal three dimensional Minkowski metric. (Author)
Singularities of spacelike constant mean curvature surfaces in Lorentz-Minkowski space
DEFF Research Database (Denmark)
Brander, David
2011-01-01
We study singularities of spacelike, constant (non-zero) mean curvature (CMC) surfaces in the Lorentz-Minkowski 3-space L-3. We show how to solve the singular Bjorling problem for such surfaces, which is stated as follows: given a real analytic null-curve f(0)(x), and a real analytic null vector...... field v(x) parallel to the tangent field of f(0), find a conformally parameterized (generalized) CMC H surface in L-3 which contains this curve as a singular set and such that the partial derivatives f(x) and f(y) are given by df(0)/dx and v along the curve. Within the class of generalized surfaces...
International Nuclear Information System (INIS)
Manoukian, E.B.
1986-01-01
Generalized conditions (rules) are set up for the existence of the distributional zero-mass limit of renormalized Feynman amplitudes in Minkowski space. These rules are generalizations of rules that have been set up earlier by us and hence are applicable to a larger class of graphs. The study is very general as the vanishing masses are led to vanish at different rates. All subtractions of renormalization are carried out directly in momentum space, about the origin, with the degree of divergence of a subtraction coinciding with the dimensionality of the corresponding subdiagram
Quantum tasks in Minkowski space
International Nuclear Information System (INIS)
Kent, Adrian
2012-01-01
The fundamental properties of quantum information and its applications to computing and cryptography have been greatly illuminated by considering information-theoretic tasks that are provably possible or impossible within non-relativistic quantum mechanics. I describe here a general framework for defining tasks within (special) relativistic quantum theory and illustrate it with examples from relativistic quantum cryptography and relativistic distributed quantum computation. The framework gives a unified description of all tasks previously considered and also defines a large class of new questions about the properties of quantum information in relation to Minkowski causality. It offers a way of exploring interesting new fundamental tasks and applications, and also highlights the scope for a more systematic understanding of the fundamental information-theoretic properties of relativistic quantum theory. (paper)
Minkowski space pion model inspired by lattice QCD running quark mass
Energy Technology Data Exchange (ETDEWEB)
Mello, Clayton S. [Instituto Tecnológico de Aeronáutica, DCTA, 12.228-900 São José dos Campos, SP (Brazil); Melo, J.P.B.C. de [Laboratório de Física Teórica e Computacional – LFTC, Universidade Cruzeiro do Sul, 01506-000 São Paulo, SP (Brazil); Frederico, T., E-mail: tobias@ita.br [Instituto Tecnológico de Aeronáutica, DCTA, 12.228-900 São José dos Campos, SP (Brazil)
2017-03-10
The pion structure in Minkowski space is described in terms of an analytic model of the Bethe–Salpeter amplitude combined with Euclidean Lattice QCD results. The model is physically motivated to take into account the running quark mass, which is fitted to Lattice QCD data. The pion pseudoscalar vertex is associated to the quark mass function, as dictated by dynamical chiral symmetry breaking requirements in the limit of vanishing current quark mass. The quark propagator is analyzed in terms of a spectral representation, and it shows a violation of the positivity constraints. The integral representation of the pion Bethe–Salpeter amplitude is also built. The pion space-like electromagnetic form factor is calculated with a quark electromagnetic current, which satisfies the Ward–Takahashi identity to ensure current conservation. The results for the form factor and weak decay constant are found to be consistent with the experimental data.
Minkowski space pion model inspired by lattice QCD running quark mass
Directory of Open Access Journals (Sweden)
Clayton S. Mello
2017-03-01
Full Text Available The pion structure in Minkowski space is described in terms of an analytic model of the Bethe–Salpeter amplitude combined with Euclidean Lattice QCD results. The model is physically motivated to take into account the running quark mass, which is fitted to Lattice QCD data. The pion pseudoscalar vertex is associated to the quark mass function, as dictated by dynamical chiral symmetry breaking requirements in the limit of vanishing current quark mass. The quark propagator is analyzed in terms of a spectral representation, and it shows a violation of the positivity constraints. The integral representation of the pion Bethe–Salpeter amplitude is also built. The pion space-like electromagnetic form factor is calculated with a quark electromagnetic current, which satisfies the Ward–Takahashi identity to ensure current conservation. The results for the form factor and weak decay constant are found to be consistent with the experimental data.
Comparison of two Minkowski-space approaches to heavy quarkonia
Energy Technology Data Exchange (ETDEWEB)
Leitao, Sofia; Biernat, Elmar P. [Universidade de Lisboa, CFTP, Instituto Superior Tecnico, Lisbon (Portugal); Li, Yang [Iowa State University, Department of Physics and Astronomy, Ames, IA (United States); College of William and Mary, Department of Physics, Williamsburg, VA (United States); Maris, Pieter; Vary, James P. [Iowa State University, Department of Physics and Astronomy, Ames, IA (United States); Pena, M.T. [Universidade de Lisboa, CFTP, Instituto Superior Tecnico, Lisbon (Portugal); Universidade de Lisboa, Departamento de Fisica, Instituto Superior Tecnico, Lisbon (Portugal); Stadler, Alfred [Universidade de Lisboa, CFTP, Instituto Superior Tecnico, Lisbon (Portugal); Universidade de Evora, Departamento de Fisica, Evora (Portugal)
2017-10-15
In this work we compare mass spectra and decay constants obtained from two recent, independent, and fully relativistic approaches to the quarkonium bound-state problem: the Basis Light-Front Quantization approach, where light-front wave functions are naturally formulated; and, the Covariant Spectator Theory (CST), based on a reorganization of the Bethe-Salpeter equation. Even though conceptually different, both solutions are obtained in Minkowski space. Comparisons of decay constants for more than ten states of charmonium and bottomonium show favorable agreement between the two approaches as well as with experiment where available. We also apply the Brodsky-Huang-Lepage prescription to convert the CST amplitudes into functions of light-front variables. This provides an ideal opportunity to investigate the similarities and differences at the level of the wave functions. Several qualitative features are observed in remarkable agreement between the two approaches even for the rarely addressed excited states. Leading-twist distribution amplitudes as well as parton distribution functions of heavy quarkonia are also analyzed. (orig.)
Euclidean to Minkowski Bethe-Salpeter amplitude and observables
International Nuclear Information System (INIS)
Carbonell, J.; Frederico, T.; Karmanov, V.A.
2017-01-01
We propose a method to reconstruct the Bethe-Salpeter amplitude in Minkowski space given the Euclidean Bethe-Salpeter amplitude - or alternatively the light-front wave function - as input. The method is based on the numerical inversion of the Nakanishi integral representation and computing the corresponding weight function. This inversion procedure is, in general, rather unstable, and we propose several ways to considerably reduce the instabilities. In terms of the Nakanishi weight function, one can easily compute the BS amplitude, the LF wave function and the electromagnetic form factor. The latter ones are very stable in spite of residual instabilities in the weight function. This procedure allows both, to continue the Euclidean BS solution in the Minkowski space and to obtain a BS amplitude from a LF wave function. (orig.)
Euclidean to Minkowski Bethe-Salpeter amplitude and observables
Energy Technology Data Exchange (ETDEWEB)
Carbonell, J. [Universite Paris-Sud, IN2P3-CNRS, Institut de Physique Nucleaire, Orsay Cedex (France); Frederico, T. [Instituto Tecnologico de Aeronautica, DCTA, Sao Jose dos Campos (Brazil); Karmanov, V.A. [Lebedev Physical Institute, Moscow (Russian Federation)
2017-01-15
We propose a method to reconstruct the Bethe-Salpeter amplitude in Minkowski space given the Euclidean Bethe-Salpeter amplitude - or alternatively the light-front wave function - as input. The method is based on the numerical inversion of the Nakanishi integral representation and computing the corresponding weight function. This inversion procedure is, in general, rather unstable, and we propose several ways to considerably reduce the instabilities. In terms of the Nakanishi weight function, one can easily compute the BS amplitude, the LF wave function and the electromagnetic form factor. The latter ones are very stable in spite of residual instabilities in the weight function. This procedure allows both, to continue the Euclidean BS solution in the Minkowski space and to obtain a BS amplitude from a LF wave function. (orig.)
On the Gauss Map of Surfaces of Revolution with Lightlike Axis in Minkowski 3-Space
Directory of Open Access Journals (Sweden)
Minghao Jin
2013-01-01
Full Text Available By studying the Gauss map G and Laplace operator Δh of the second fundamental form h, we will classify surfaces of revolution with a lightlike axis in 3-dimensional Minkowski space and also obtain the surface of Enneper of the 2nd kind, the surface of Enneper of the 3rd kind, the de Sitter pseudosphere, and the hyperbolic pseudosphere that satisfy condition ΔhG=ΛG, Λ being a 3×3 real matrix.
The Dual Orlicz-Brunn-Minkowski Theory
Gardner, Richard J.; Hug, Daniel; Weil, Wolfgang; Ye, Deping
2014-01-01
This paper introduces the dual Orlicz-Brunn-Minkowski theory for star sets. A radial Orlicz addition of two or more star sets is proposed and a corresponding dual Orlicz-Brunn-Minkowski inequality is established. Based on a radial Orlicz linear combination of two star sets, a formula for the dual Orlicz mixed volume is derived and a corresponding dual Orlicz-Minkowski inequality proved. The inequalities proved yield as special cases the precise duals of the conjectured log-Brunn-Minkowski and...
Revisiting Special Relativity: A Natural Algebraic Alternative to Minkowski Spacetime
Chappell, James M.; Iqbal, Azhar; Iannella, Nicolangelo; Abbott, Derek
2012-01-01
Minkowski famously introduced the concept of a space-time continuum in 1908, merging the three dimensions of space with an imaginary time dimension , with the unit imaginary producing the correct spacetime distance , and the results of Einstein’s then recently developed theory of special relativity, thus providing an explanation for Einstein’s theory in terms of the structure of space and time. As an alternative to a planar Minkowski space-time of two space dimensions and one time dimension, we replace the unit imaginary , with the Clifford bivector for the plane that also squares to minus one, but which can be included without the addition of an extra dimension, as it is an integral part of the real Cartesian plane with the orthonormal basis and . We find that with this model of planar spacetime, using a two-dimensional Clifford multivector, the spacetime metric and the Lorentz transformations follow immediately as properties of the algebra. This also leads to momentum and energy being represented as components of a multivector and we give a new efficient derivation of Compton’s scattering formula, and a simple formulation of Dirac’s and Maxwell’s equations. Based on the mathematical structure of the multivector, we produce a semi-classical model of massive particles, which can then be viewed as the origin of the Minkowski spacetime structure and thus a deeper explanation for relativistic effects. We also find a new perspective on the nature of time, which is now given a precise mathematical definition as the bivector of the plane. PMID:23300566
The vortex filament in the Minkowski 3-space and generalized bi-Schrödinger maps
International Nuclear Information System (INIS)
Ding Qing; Wang Wei; Liu Xiangping
2012-01-01
By extending the concept of generalized bi-Schrödinger maps to the case that the target manifold is a para-Kähler manifold, we show that the third-order timelike and spacelike correction models of the vortex filament in the Minkowski 3-space are equivalent to the generalized bi-Schrödinger maps from R to the hyperbolic 2-space H 2 and the de Sitter 2-space S 1,1 , respectively. As a consequence, all three typical second to fourth order integrable systems of the AKNS hierarchy are interpreted in a unified way in terms of generalized bi-Schrödinger maps. Based on this exploitation and a general discussion of the generalized bi-Schödinger maps from R into an arbitrary Riemannian surface, we reveal a property of generalized bi-Schrödinger maps that is not admitted for Schrödinger maps. (paper)
κ-Minkowski spacetime as the result of Jordanian twist deformation
International Nuclear Information System (INIS)
Borowiec, A.; Pachol, A.
2009-01-01
Two one-parameter families of twists providing κ-Minkowski * product deformed spacetime are considered: Abelian and Jordanian. We compare the derivation of quantum Minkowski space from two perspectives. The first one is the Hopf module algebra point of view, which is strictly related with Drinfeld's twisting tensor technique. The other one relies on an appropriate extension of ''deformed realizations'' of nondeformed Lorentz algebra by the quantum Minkowski algebra. This extension turns out to be de Sitter Lie algebra. We show the way both approaches are related. The second path allows us to calculate deformed dispersion relations for toy models ensuing from different twist parameters. In the Abelian case, one recovers κ-Poincare dispersion relations having numerous applications in doubly special relativity. Jordanian twists provide a new type of dispersion relations which in the minimal case (related to Weyl-Poincare algebra) takes an energy-dependent linear mass deformation form.
Spinor analysis of the Yang-Mills theory in the Minkowski space
International Nuclear Information System (INIS)
Pervushin, V.N.; Horejsi, J.
1982-01-01
Spinorial methods are applied to the solution of self-duality equations for Yang-Mills field and the Dirac equation with an external self-dual field in the Minkowski space. Gauge group SU(2) is considered. It is shown that in the spinorial formalism an analog of the Yang construction of self-dual fields emerges naturally. Solutions of the Dirac eqUation for massless fermion with an arbitrary isospin, interacting with an external self-dual or anti-self-dual field are obtained. The external field is chosen to be the Minkowskian analog of the EUclidean Hooft Ansatz. It is shown that for the isospin 1/2 and 1 the solutions of the Dirac equation may be expressed in terms of the solutions of d'Alembert equation. The solutions obtained may be employed in the approach to gauge theories proposed recently, which is based on an analogy with the superfluidity theory; in such an approach the self-dual solutions of the Yang-Mills equations represent the vacuum
Volume sums of polar Blaschke–Minkowski homomorphisms
Indian Academy of Sciences (India)
In this article, we establish Minkowski and Aleksandrov–Fenchel type inequalities for the volume sum of polars of Blaschke–Minkowski homomorphisms. Keywords. Blaschke–Minkowski homomorphism; volume differences; volume sum; projection body operator. 2010 Mathematics Subject Classification. 52A40, 52A30. 1.
Revisiting special relativity: a natural algebraic alternative to Minkowski spacetime.
Directory of Open Access Journals (Sweden)
James M Chappell
Full Text Available Minkowski famously introduced the concept of a space-time continuum in 1908, merging the three dimensions of space with an imaginary time dimension [Formula: see text], with the unit imaginary producing the correct spacetime distance [Formula: see text], and the results of Einstein's then recently developed theory of special relativity, thus providing an explanation for Einstein's theory in terms of the structure of space and time. As an alternative to a planar Minkowski space-time of two space dimensions and one time dimension, we replace the unit imaginary [Formula: see text], with the Clifford bivector [Formula: see text] for the plane that also squares to minus one, but which can be included without the addition of an extra dimension, as it is an integral part of the real Cartesian plane with the orthonormal basis [Formula: see text] and [Formula: see text]. We find that with this model of planar spacetime, using a two-dimensional Clifford multivector, the spacetime metric and the Lorentz transformations follow immediately as properties of the algebra. This also leads to momentum and energy being represented as components of a multivector and we give a new efficient derivation of Compton's scattering formula, and a simple formulation of Dirac's and Maxwell's equations. Based on the mathematical structure of the multivector, we produce a semi-classical model of massive particles, which can then be viewed as the origin of the Minkowski spacetime structure and thus a deeper explanation for relativistic effects. We also find a new perspective on the nature of time, which is now given a precise mathematical definition as the bivector of the plane.
Revisiting special relativity: a natural algebraic alternative to Minkowski spacetime.
Chappell, James M; Iqbal, Azhar; Iannella, Nicolangelo; Abbott, Derek
2012-01-01
Minkowski famously introduced the concept of a space-time continuum in 1908, merging the three dimensions of space with an imaginary time dimension [Formula: see text], with the unit imaginary producing the correct spacetime distance [Formula: see text], and the results of Einstein's then recently developed theory of special relativity, thus providing an explanation for Einstein's theory in terms of the structure of space and time. As an alternative to a planar Minkowski space-time of two space dimensions and one time dimension, we replace the unit imaginary [Formula: see text], with the Clifford bivector [Formula: see text] for the plane that also squares to minus one, but which can be included without the addition of an extra dimension, as it is an integral part of the real Cartesian plane with the orthonormal basis [Formula: see text] and [Formula: see text]. We find that with this model of planar spacetime, using a two-dimensional Clifford multivector, the spacetime metric and the Lorentz transformations follow immediately as properties of the algebra. This also leads to momentum and energy being represented as components of a multivector and we give a new efficient derivation of Compton's scattering formula, and a simple formulation of Dirac's and Maxwell's equations. Based on the mathematical structure of the multivector, we produce a semi-classical model of massive particles, which can then be viewed as the origin of the Minkowski spacetime structure and thus a deeper explanation for relativistic effects. We also find a new perspective on the nature of time, which is now given a precise mathematical definition as the bivector of the plane.
Directory of Open Access Journals (Sweden)
Virginia E. Suassuna Martins Costa
2009-06-01
Full Text Available Este artigo tem como objetivo abordar as concepções de tempo assimilado ao espaço e de tempo vivido, especificando seus elementos estruturais e os fenômenos a eles relacionados, com base na perspectiva de Eugène Minkowski. Para tal, evidencia algumas conceituações a respeito do tempo em Santo Agostinho e em Henry Bergson", assim com em alguns aspectos biográficos de Minkowski, que contribuíram para a compreensão a respeito do fenômeno tempo. Como meta, pretende oferecer subsídios para a reflexão dos profissionais de saúde no encontro clínico.Este artículo tiene el objetivo de tratar sobre los conceptos del tiempo asimilados al espacio y del tiempo vivido, especificando sus elementos estructurales y fenómenos relacionados, embasados en la perspectiva de Eugène Minkowski. Para esto, se evidencia algunos conceptos relacionados con el tiempo en Santo Agostinho y en Henry Bergson, así como los aspectos biográficos de Minkowski que han contribuido para entenderse sobre el fenómeno del tiempo. Como meta, este artículo se propone a ofrecer subsidios a la reflexión por los profesionales de salud en el encuentro clínico.This article has the objective to deal about the conceptions of time assimilated with the space and the lived time, specifying its structural elements and related phenomena, based on Eugène Minkowski's perspective. For this, it is evidenced some concepts related to time in Saint Augustin and in Henry Bergson, as well as some Minkowski's biographic aspects that have contributed for understanding about time's phenomenon. As a goal, this paper intends to offer subsidies for the reflection by health professionals on clinic meeting.
Log-Concavity Properties of Minkowski Valuations
Berg, Astrid; Parapatits, Lukas; Schuster, Franz E.; Weberndorfer, Manuel
2014-01-01
New Orlicz Brunn-Minkowski inequalities are established for rigid motion compatible Minkowski valuations of arbitrary degree. These extend classical log-concavity properties of intrinsic volumes and generalize seminal results of Lutwak and others. Two different approaches which refine previously employed techniques are explored. It is shown that both lead to the same class of Minkowski valuations for which these inequalities hold. An appendix by Semyon Alesker contains the proof of a new clas...
Confined gluon from Minkowski space continuation of the PT-BFM SDE solution
Czech Academy of Sciences Publication Activity Database
Šauli, Vladimír
2012-01-01
Roč. 39, č. 3 (2012), 035003/1-035003/16 ISSN 0954-3899 Institutional support: RVO:61389005 Keywords : Minkowski pace * effective QCD * gluon mass generation Subject RIV: BE - Theoretical Physics Impact factor: 5.326, year: 2012
Fermionic bound states in Minkowski space. Light-cone singularities and structure
Energy Technology Data Exchange (ETDEWEB)
Paula, Wayne de; Frederico, Tobias; Pimentel, Rafael [Instituto Tecnologico de Aeronautica, DCTA, Dept. de Fisica, Sao Jose dos Campos, Sao Paulo (Brazil); Salme, Giovanni [Istituto Nazionale di Fisica Nucleare, Rome (Italy); Viviani, Michele [Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
2017-11-15
The Bethe-Salpeter equation for two-body bound system with spin 1/2 constituent is addressed directly in the Minkowski space. In order to accomplish this aim we use the Nakanishi integral representation of the Bethe-Salpeter amplitude and exploit the formal tool represented by the exact projection onto the null-plane. This formal step allows one (i) to deal with end-point singularities one meets and (ii) to find stable results, up to strongly relativistic regimes, which settle in strongly bound systems. We apply this technique to obtain the numerical dependence of the binding energies upon the coupling constants and the light-front amplitudes for a fermion-fermion 0{sup +} state with interaction kernels, in ladder approximation, corresponding to scalar-, pseudoscalar- and vector-boson exchanges, respectively. After completing the numerical survey of the previous cases, we extend our approach to a quark-antiquark system in 0{sup -} state, taking both constituent-fermion and exchanged-boson masses, from lattice calculations. Interestingly, the calculated light-front amplitudes for such a mock pion show peculiar signatures of the spin degrees of freedom. (orig.)
The Adolescence of Relativity: Einstein, Minkowski, and the Philosophy of Space and Time
Dieks, Dennis
An often repeated account of the genesis of special relativity tells us that relativity theory was to a considerable extent the fruit of an operationalist philosophy of science. Indeed, Einstein's 1905 paper stresses the importance of rods and clocks for giving concrete physical content to spatial and temporal notions. I argue, however, that it would be a mistake to read too much into this. Einstein's operationalist remarks should be seen as serving rhetoric purposes rather than as attempts to promulgate a particular philosophical position - in fact, Einstein never came close to operationalism in any of his philosophical writings. By focussing on what could actually be measured with rods and clocks Einstein shed doubt on the empirical status of a number of pre-relativistic concepts, with the intention to persuade his readers that the applicability of these concepts was not obvious. This rhetoric manoeuvre has not always been rightly appreciated in the philosophy of physics. Thus, the influence of operationalist misinterpretations, according to which associated operations strictly define what a concept means, can still be felt in present-day discussions about the conventionality of simultaneity.The standard story continues by pointing out that Minkowski in 1908 supplanted Einstein's approach with a realist spacetime account that has no room for a foundational role of rods and clocks: relativity theory became a description of a four-dimensional "absolute world." As it turns out, however, it is not at all clear that Minkowski was proposing a substantivalist position with respect to spacetime. On the contrary, it seems that from a philosophical point of view Minkowski's general position was not very unlike the one in the back of Einstein's mind. However, in Minkowski's formulation of special relativity it becomes more explicit that the content of spatiotemporal concepts relates to considerations about the form of physical laws. If accepted, this position has important
International Nuclear Information System (INIS)
Winicour, Jeffrey
2017-01-01
An algebraic-hyperbolic method for solving the Hamiltonian and momentum constraints has recently been shown to be well posed for general nonlinear perturbations of the initial data for a Schwarzschild black hole. This is a new approach to solving the constraints of Einstein’s equations which does not involve elliptic equations and has potential importance for the construction of binary black hole data. In order to shed light on the underpinnings of this approach, we consider its application to obtain solutions of the constraints for linearized perturbations of Minkowski space. In that case, we find the surprising result that there are no suitable Cauchy hypersurfaces in Minkowski space for which the linearized algebraic-hyperbolic constraint problem is well posed. (note)
Inconsistency of Minkowski higher-derivative theories
Energy Technology Data Exchange (ETDEWEB)
Aglietti, Ugo G. [Universita di Roma ' ' La Sapienza' ' , Dipartimento di Fisica, Rome (Italy); Anselmi, Damiano [Universita di Pisa, Dipartimento di Fisica ' ' Enrico Fermi' ' , Pisa (Italy); INFN, Sezione di Pisa, Pisa (Italy)
2017-02-15
We show that Minkowski higher-derivative quantum field theories are generically inconsistent, because they generate nonlocal, non-hermitian ultraviolet divergences, which cannot be removed by means of standard renormalization procedures. By ''Minkowski theories'' we mean theories that are defined directly in Minkowski spacetime. The problems occur when the propagators have complex poles, so that the correlation functions cannot be obtained as the analytic continuations of their Euclidean versions. The usual power counting rules fail and are replaced by much weaker ones. Self-energies generate complex divergences proportional to inverse powers of D'Alembertians. Three-point functions give more involved nonlocal divergences, which couple to infrared effects. We illustrate the violations of the locality and hermiticity of counterterms in scalar models and higher-derivative gravity. (orig.)
κ-Minkowski and Snyder algebra from reparametrization symmetry
International Nuclear Information System (INIS)
Chandrasekhar, Chatterjee; Sunandan, Gangopadhyay
2008-01-01
Recently, motivated by the ideas of quantum gravity, a generalization of Special Relativity known as Doubly Special Relativity has been proposed. The most popular model is the Magueijo-Smolin model. We derive non commuting phase-space structures which are combinations of both the κ-Minkowski and the Snyder algebra by exploiting the re-parametrisation symmetry of the recently proposed Lagrangian for a point particle satisfying the exact Doubly Special Relativity dispersion relation in the Magueijo-Smolin framework
On classical de Sitter and Minkowski solutions with intersecting branes
Andriot, David
2018-03-01
Motivated by the connection of string theory to cosmology or particle physics, we study solutions of type II supergravities having a four-dimensional de Sitter or Minkowski space-time, with intersecting D p -branes and orientifold O p -planes. Only few such solutions are known, and we aim at a better characterisation. Modulo a few restrictions, we prove that there exists no classical de Sitter solution for any combination of D 3/ O 3 and D 7/ O 7, while we derive interesting constraints for intersecting D 5/ O 5 or D 6/ O 6, or combinations of D 4/ O 4 and D 8/ O 8. Concerning classical Minkowski solutions, we understand some typical features, and propose a solution ansatz. Overall, a central information appears to be the way intersecting D p / O p overlap each other, a point we focus on.
Two-transitive MInkowski planes
Wilbrink, H.A.
1982-01-01
In this paper we determine all finite Minkowski planes with an automorphism group which satisfies the following transitivity property: any ordered pair of nonparallel points can be mapped onto any other ordered pair of nonparallel points.
arXiv On classical de Sitter and Minkowski solutions with intersecting branes
Andriot, David
2018-03-09
Motivated by the connection of string theory to cosmology or particle physics, we study solutions of type II supergravities having a four-dimensional de Sitter or Minkowski space-time, with intersecting D$_{p}$ -branes and orientifold O$_{p}$ -planes. Only few such solutions are known, and we aim at a better characterisation. Modulo a few restrictions, we prove that there exists no classical de Sitter solution for any combination of D$_{3}$/O$_{3}$ and D$_{7}$/O$_{7}$, while we derive interesting constraints for intersecting D$_{5}$/O$_{5}$ or D$_{6}$/O$_{6}$, or combinations of D$_{4}$/O$_{4}$ and D$_{8}$/O$_{8}$. Concerning classical Minkowski solutions, we understand some typical features, and propose a solution ansatz. Overall, a central information appears to be the way intersecting D$_{p}$ /O$_{p}$ overlap each other, a point we focus on.
Comparison of two global digital algorithms for Minkowski tensor estimation
DEFF Research Database (Denmark)
The geometry of real world objects can be described by Minkowski tensors. Algorithms have been suggested to approximate Minkowski tensors if only a binary image of the object is available. This paper presents implementations of two such algorithms. The theoretical convergence properties...... are confirmed by simulations on test sets, and recommendations for input arguments of the algorithms are given. For increasing resolutions, we obtain more accurate estimators for the Minkowski tensors. Digitisations of more complicated objects are shown to require higher resolutions....
Two general classes of self dual, Minkowski propagating wave solutions in Yang Mills gauge theory
International Nuclear Information System (INIS)
Kovacs, E.; Lo, S.Y.
1979-01-01
Two classes of self dual propogating wave solutions to the sourceless field equations in Minkowski space are presented. Some of these solutions can be linearly superposed. These waves can propogate at either the speed of light or at a speed less than that of light
International Nuclear Information System (INIS)
Kowalski-Glikman, J.
2009-01-01
In this paper we construct, and investigate some thermal properties of, the noncommutative counterpart of Rindler space, which we call κ-Rindler space. This space is obtained by changing variables in the defining commutators of κ-Minkowski space. We then rederive the commutator structure of κ-Rindler space with the help of an appropriate star product, obtained from the κ-Minkowski one. Using this star product, following the idea of Padmanabhan, we find the leading order, 1/κ correction to the Hawking thermal spectrum.
International Nuclear Information System (INIS)
Vay, J.-L.; Geddes, C. G. R.; Cormier-Michel, E.; Grote, D. P.
2011-01-01
The effects of hyperbolic rotation in Minkowski space resulting from the use of Lorentz boosted frames of calculation on laser propagation in plasmas are analyzed. Selection of a boost frame at the laser group velocity is shown to alter the laser spectrum, allowing the use of higher boost velocities. The technique is applied to simulations of laser driven plasma wakefield accelerators, which promise much smaller machines and whose development requires detailed simulations that challenge or exceed current capabilities. Speedups approaching the theoretical optima are demonstrated, producing the first direct simulations of stages up to 1 TeV. This is made possible by a million times speedup thanks to a frame boost with a relativistic factor γ b as high as 1300, taking advantage of the rotation to mitigate an instability that limited previous work.
On conjectures of Minkowski and Woods for n = 9
Indian Academy of Sciences (India)
Here we shall prove Conjecture II for n = 9, thereby proving Minkowski's Conjecture for n = 9. Woods [20 ... result that if hypothesis of Conjecture III holds, then any closed sphere in R9 of radius. √ ...... tures of Minkowski and Watson, Number Theory, Trends in Mathematics (2000) (Basel: ... Journal of the Indian Math. Soc.
Isolated Minkowski vacua, and stability analysis for an extended brane in the rugby ball
International Nuclear Information System (INIS)
Himmetoglu, Burak; Peloso, Marco
2007-01-01
We study a recently proposed model, where a codimension one brane is wrapped around the axis of symmetry of an internal two-dimensional space compactified by a flux. This construction is free from the problems which plague delta-like, codimension two branes, where only tension can be present. In contrast, arbitrary fields can be localized on this extended brane, and their gravitational interaction is standard 4d gravity at large distances. In the first part of this work, we study the de Sitter (dS) vacua of the model. The landscape of these vacua is characterized by discrete points labeled by two integer numbers, related to the flux responsible for the compactification and to the current of a brane field. A Minkowski external space emerges only for a special ratio between these two integers, and it is therefore (topologically) isolated from the nearby dS solutions. In the second part, we show that the Minkowski vacua are stable under the most generic axially-symmetric perturbations, and we argue that this is sufficient to ensure the overall stability
Isolated Minkowski vacua, and stability analysis for an extended brane in the rugby ball
Energy Technology Data Exchange (ETDEWEB)
Himmetoglu, Burak [School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States); Peloso, Marco [School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)]. E-mail: peloso@physics.umn.edu
2007-06-25
We study a recently proposed model, where a codimension one brane is wrapped around the axis of symmetry of an internal two-dimensional space compactified by a flux. This construction is free from the problems which plague delta-like, codimension two branes, where only tension can be present. In contrast, arbitrary fields can be localized on this extended brane, and their gravitational interaction is standard 4d gravity at large distances. In the first part of this work, we study the de Sitter (dS) vacua of the model. The landscape of these vacua is characterized by discrete points labeled by two integer numbers, related to the flux responsible for the compactification and to the current of a brane field. A Minkowski external space emerges only for a special ratio between these two integers, and it is therefore (topologically) isolated from the nearby dS solutions. In the second part, we show that the Minkowski vacua are stable under the most generic axially-symmetric perturbations, and we argue that this is sufficient to ensure the overall stability.
Isolated Minkowski vacua, and stability analysis for an extended brane in the rugby ball
Himmetoǧlu, Burak; Peloso, Marco
2007-06-01
We study a recently proposed model, where a codimension one brane is wrapped around the axis of symmetry of an internal two-dimensional space compactified by a flux. This construction is free from the problems which plague delta-like, codimension two branes, where only tension can be present. In contrast, arbitrary fields can be localized on this extended brane, and their gravitational interaction is standard 4d gravity at large distances. In the first part of this work, we study the de Sitter (dS) vacua of the model. The landscape of these vacua is characterized by discrete points labeled by two integer numbers, related to the flux responsible for the compactification and to the current of a brane field. A Minkowski external space emerges only for a special ratio between these two integers, and it is therefore (topologically) isolated from the nearby dS solutions. In the second part, we show that the Minkowski vacua are stable under the most generic axially-symmetric perturbations, and we argue that this is sufficient to ensure the overall stability.
Extended supersymmetry in four-dimensional Euclidean space
International Nuclear Information System (INIS)
McKeon, D.G.C.; Sherry, T.N.
2000-01-01
Since the generators of the two SU(2) groups which comprise SO(4) are not Hermitian conjugates of each other, the simplest supersymmetry algebra in four-dimensional Euclidean space more closely resembles the N=2 than the N=1 supersymmetry algebra in four-dimensional Minkowski space. An extended supersymmetry algebra in four-dimensional Euclidean space is considered in this paper; its structure resembles that of N=4 supersymmetry in four-dimensional Minkowski space. The relationship of this algebra to the algebra found by dimensionally reducing the N=1 supersymmetry algebra in ten-dimensional Euclidean space to four-dimensional Euclidean space is examined. The dimensional reduction of N=1 super Yang-Mills theory in ten-dimensional Minkowski space to four-dimensional Euclidean space is also considered
An Efficient Algorithm to Calculate the Minkowski Sum of Convex 3D Polyhedra
Bekker, Henk; Roerdink, Jos B.T.M.
2001-01-01
A new method is presented to calculate the Minkowski sum of two convex polyhedra A and B in 3D. These graphs are given edge attributes. From these attributed graphs the attributed graph of the Minkowski sum is constructed. This graph is then transformed into the Minkowski sum of A and B. The running
On the Penrose inequality for dust null shells in the Minkowski spacetime of arbitrary dimension
International Nuclear Information System (INIS)
Mars, Marc; Soria, Alberto
2012-01-01
A particular, yet relevant, case of the Penrose inequality involves null shells propagating in the Minkowski spacetime. Despite previous claims in the literature, the validity of this inequality remains open. In this paper, we rewrite this inequality in terms of the geometry of the surface obtained by intersecting the past null cone of the original surface S with a constant time hyperplane and the 'time height' function of S over this hyperplane. We also specialize to the case when S lies in the past null cone of a point and show the validity of the corresponding inequality in any dimension (in four dimensions this inequality was proved by Tod (1985 Class. Quantum Grav. 2 L65-8). Exploiting properties of convex hypersurfaces in the Euclidean space, we write down the Penrose inequality in the Minkowski spacetime of an arbitrary dimension n + 2 as an inequality for two smooth functions on the sphere S n . We finally obtain a sufficient condition for the validity of the Penrose inequality in the four-dimensional Minkowski spacetime and show that this condition is satisfied by a large class of surfaces. (paper)
Minkowski metrics in creating universal ranking algorithms
Directory of Open Access Journals (Sweden)
Andrzej Ameljańczyk
2014-06-01
Full Text Available The paper presents a general procedure for creating the rankings of a set of objects, while the relation of preference based on any ranking function. The analysis was possible to use the ranking functions began by showing the fundamental drawbacks of commonly used functions in the form of a weighted sum. As a special case of the ranking procedure in the space of a relation, the procedure based on the notion of an ideal element and generalized Minkowski distance from the element was proposed. This procedure, presented as universal ranking algorithm, eliminates most of the disadvantages of ranking functions in the form of a weighted sum.[b]Keywords[/b]: ranking functions, preference relation, ranking clusters, categories, ideal point, universal ranking algorithm
Dynamics of quantum entanglement in de Sitter spacetime and thermal Minkowski spacetime
Directory of Open Access Journals (Sweden)
Zhiming Huang
2017-10-01
Full Text Available We investigate the dynamics of entanglement between two atoms in de Sitter spacetime and in thermal Minkowski spacetime. We treat the two-atom system as an open quantum system which is coupled to a conformally coupled massless scalar field in the de Sitter invariant vacuum or to a thermal bath in the Minkowski spacetime, and derive the master equation that governs its evolution. We compare the phenomena of entanglement creation, degradation, revival and enhancement for the de Sitter spacetime case with that for the thermal Minkowski spacetime case. We find that the entanglement dynamics of two atoms for these two spacetime cases behave quite differently. In particular, the two atoms interacting with the field in the thermal Minkowski spacetime (with the field in the de Sitter-invariant vacuum, under certain conditions, could be entangled, while they would not become entangled in the corresponding de Sitter case (in the corresponding thermal Minkowski case. Thus, although a single static atom in the de Sitter-invariant vacuum responds as if it were bathed in thermal radiation in a Minkowski universe, with the help of the different dynamic evolution behaviors of entanglement for two atoms one can in principle distinguish these two universes.
Reexamination of the Abraham-Minkowski dilemma
Silveirinha, Mário G.
2017-09-01
Here the Abraham-Minkowski controversy on the correct definition of the light momentum in a macroscopic medium is revisited with the purpose to highlight that an effective medium formalism necessarily restricts the available information on the internal state of a system, and that this is ultimately the reason why the dilemma has no universal solution. Despite these difficulties, it is demonstrated that in the limit of no material absorption and under steady-state conditions, the time-averaged light (kinetic) momentum may be unambiguously determined by the Abraham result, both for bodies at rest and for circulatory flows of matter. The implications of these findings are discussed in the context of quantum optics of moving media, and we examine in detail the fundamental role of the Minkowski momentum in such a context.
Solution of second order supersymmetrical intertwining relations in Minkowski plane
Energy Technology Data Exchange (ETDEWEB)
Ioffe, M. V., E-mail: m.ioffe@spbu.ru; Kolevatova, E. V., E-mail: e.v.kolev@yandex.ru [Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034 (Russian Federation); Nishnianidze, D. N., E-mail: cutaisi@yahoo.com [Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034 (Russian Federation); Akaki Tsereteli State University, 4600 Kutaisi, Georgia (United States)
2016-08-15
Supersymmetrical (SUSY) intertwining relations are generalized to the case of quantum Hamiltonians in Minkowski space. For intertwining operators (supercharges) of second order in derivatives, the intertwined Hamiltonians correspond to completely integrable systems with the symmetry operators of fourth order in momenta. In terms of components, the intertwining relations correspond to the system of nonlinear differential equations which are solvable with the simplest—constant—ansatzes for the “metric” matrix in second order part of the supercharges. The corresponding potentials are built explicitly both for diagonalizable and nondiagonalizable form of “metric” matrices, and their properties are discussed.
Poincare covariance and κ-Minkowski spacetime
International Nuclear Information System (INIS)
Dabrowski, Ludwik; Piacitelli, Gherardo
2011-01-01
A fully Poincare covariant model is constructed as an extension of the κ-Minkowski spacetime. Covariance is implemented by a unitary representation of the Poincare group, and thus complies with the original Wigner approach to quantum symmetries. This provides yet another example (besides the DFR model), where Poincare covariance is realised a la Wigner in the presence of two characteristic dimensionful parameters: the light speed and the Planck length. In other words, a Doubly Special Relativity (DSR) framework may well be realised without deforming the meaning of 'Poincare covariance'. -- Highlights: → We construct a 4d model of noncommuting coordinates (quantum spacetime). → The coordinates are fully covariant under the undeformed Poincare group. → Covariance a la Wigner holds in presence of two dimensionful parameters. → Hence we are not forced to deform covariance (e.g. as quantum groups). → The underlying κ-Minkowski model is unphysical; covariantisation does not cure this.
Scalar field propagation in the phi^4 kappa-Minkowski model
Meljanac, S.; Samsarov, A.; Trampetic, J.; Wohlgenannt, M.
2011-01-01
In this article we use the noncommutative (NC) kappa-Minkowski phi^4 model based on the kappa-deformed star product, ({*}_h). The action is modified by expanding up to linear order in the kappa-deformation parameter a, producing an effective model on commutative spacetime. For the computation of the tadpole diagram contributions to the scalar field propagation/self-energy, we anticipate that statistics on the kappa-Minkowski is specifically kappa-deformed. Thus our prescription in fact repres...
Nonlinear realization of supersymmetric AdS space isometries
International Nuclear Information System (INIS)
Clark, T. E.; Love, S. T.
2006-01-01
The isometries of AdS 5 space and supersymmetric AdS 5 xS 1 space are nonlinearly realized on four-dimensional Minkowski space. The resultant effective actions in terms of the Nambu-Goldstone modes are constructed. The dilatonic mode governing the motion of the Minkowski space probe brane into the covolume of supersymmetric AdS 5 space is found to be unstable and the bulk of the AdS 5 space is unable to sustain the brane. No such instability appears in the nonsupersymmetric case
Nonextreme and ultraextreme domain walls and their global space-times
International Nuclear Information System (INIS)
Cvetic, M.; Griffies, S.; Soleng, H.H.
1993-01-01
Nonextreme walls (bubbles with two insides) and ultraextreme walls (bubbles of false vacuum decay) are discussed. Their respective energy densities are higher and lower than that of the corresponding extreme (supersymmetric), planar domain wall. These singularity free space-times exhibit nontrivial causal structure analogous to certain nonextreme black holes. We focus on anti--de Sitter--Minkowski walls and comment on Minkowski-Minkowski walls with trivial extreme limit, as well as walls adjacent to de Sitter space-times with no extreme limit
International Nuclear Information System (INIS)
Bakulev, A. P.; Mikhailov, S. V.; Stefanis, N. G.
2007-01-01
We work out and discuss the Minkowski version of fractional analytic perturbation theory for QCD observables, recently developed and presented by us for the Euclidean region. The original analytic approach to QCD, initiated by Shirkovand Solovtsov, is summarized and relations to other proposals to achieve an analytic strong coupling are pointed out. The developed framework is applied to the Higgs boson decay into a bb pair, using recent results for the massless correlator of two quark scalar currents in the MS scheme.We present calculations for the decay width within the Minkowski version off ractional analytic perturbation theory including those non-power-series contributions that correspond to the O(α s 3 )-terms, also taking into account evolution effects of the running coupling and the b-quark-mass renormalization. Comparisons with previous results within standard QCD perturbation theory are performed and the differences are pointed out. The interplay between effects originating from the analyticity requirement and the analytic continuation from the spacelike to the timelike region and those due to the evolution of the heavy-quark mass is addressed, highlighting the differences from the conventional QCD perturbation theory
Ponderomotive forces in electrodynamics of moving media: The Minkowski and Abraham approaches
Nesterenko, V. V.; Nesterenko, A. V.
2016-09-01
In the general setting of the problem, the explicit compact formulae are derived for the ponderomotive forces in the macroscopic electrodynamics of moving media in the Minkowski and Abraham approaches. Taking account of the Minkowski constitutive relations and making use of a special representation for the Abraham energy-momentum tensor enable one to obtain a compact expression for the Abraham force in the case of arbitrary dependence of the medium velocity on spatial coordinates and the time and for nonstationary external electromagnetic field. We term the difference between the ponderomotive forces in the Abraham and Minkowski approaches as the Abraham force not only under consideration of media at rest but also in the case of moving media. The Lorentz force is found which is exerted by external electromagnetic field on the conduction current in a medium, the covariant Ohm law, and the constitutive Minkowski relations being taken into account. The physical argumentation is traced for the definition of the 4-vector of the ponderomotive force as the 4-divergence of the energy-momentum tensor of electromagnetic field in a medium.
Minkowski spacetime does not apply to a homogeneously accelerating medium
Directory of Open Access Journals (Sweden)
Brian Coleman
Full Text Available Home and comoving inertial frame parameters of an individual point of an idealized medium of launch length L uniformly co-accelerating between identical fixed-thrust rockets, are well known. This is not the case with the varying inter-rocket radar periods and related implications regarding a changing ‘noninertial own-length’ Λ which differs from a front rocket’s retrospective separation L from the simultaneously relatively moving rear rocket. On the other hand, the nonhomogeneous acceleration case involving every comoving frame’s unchanging perception of a contrived ‘rigor mortis’ medium (so-called ‘rigid motion’ traditionally associated with ‘Rindler coordinates’ whereby Λ=L=L, constitutes the sole extended accelerating medium scenario where the entrenched Minkowski metric is actually applicable. Paraphrasing Wolfgang Pauli, not only is Minkowski spacetime not correct [in the general sense], it is not even wrong [in the restricted sense]. Keywords: Homogeneous acceleration, Radar intervals, Minkowski metric, Rigor mortis acceleration, Medium-timed photon crossing rate, Retrospective separation
Observables and dispersion relations in κ-Minkowski spacetime
Aschieri, Paolo; Borowiec, Andrzej; Pachoł, Anna
2017-10-01
We revisit the notion of quantum Lie algebra of symmetries of a noncommutative spacetime, its elements are shown to be the generators of infinitesimal transformations and are naturally identified with physical observables. Wave equations on noncommutative spaces are derived from a quantum Hodge star operator. This general noncommutative geometry construction is then exemplified in the case of κ-Minkowski spacetime. The corresponding quantum Poincaré-Weyl Lie algebra of in-finitesimal translations, rotations and dilatations is obtained. The d'Alembert wave operator coincides with the quadratic Casimir of quantum translations and it is deformed as in Deformed Special Relativity theories. Also momenta (infinitesimal quantum translations) are deformed, and correspondingly the Einstein-Planck relation and the de Broglie one. The energy-momentum relations (dispersion relations) are consequently deduced. These results complement those of the phenomenological literature on the subject.
Memory as persona non grata in the work of Eugène Minkowski: a historical approach.
Vaz, João M
2016-09-01
Memory is both ubiquitous and persona non grata in the work of Eugène Minkowski. Despite the relevance of memory in the works of those who influenced him, in particular Bergson, Minkowski nonetheless repeatedly overlooked its importance in his writings. To the reader of his work this fact is as much evident as unaccounted for - both by prior research and by Minkowski himself. I shall try to prove that this disregard for memory was conditio sine qua non of Minkowski's first synthesis of Bleuler and Bergson in a 1921 article, which resulted in his famous concept of loss of vital contact with reality and which he equated with schizophrenia. Moreover, this historical approach will, on the one hand, explain the fragmentary use made by Minkowski of the philosophy of Bergson and, on the other, shed light on central aspects of his Le temps vécu of 1933 that an exclusively philosophical analysis cannot reveal. © The Author(s) 2016.
General volumes in the Orlicz-Brunn-Minkowski theory and a related Minkowski Problem I
Gardner, Richard J.; Hug, Daniel; Weil, Wolfgang; Xing, Sudan; Ye, Deping
2018-01-01
The general volume of a star body, a notion that includes the usual volume, the $q$th dual volumes, and many previous types of dual mixed volumes, is introduced. A corresponding new general dual Orlicz curvature measure is defined that specializes to the $(p,q)$-dual curvature measures introduced recently by Lutwak, Yang, and Zhang. General variational formulas are established for the general volume of two types of Orlicz linear combinations. One of these is applied to the Minkowski problem f...
The Minkowski and conformal superspaces the classical and quantum descriptions
Fioresi, Rita
2015-01-01
This book is aimed at graduate students and researchers in physics and mathematics who seek to understand the basics of supersymmetry from a mathematical point of view. It provides a bridge between the physical and mathematical approaches to the superworld. The physicist who is devoted to learning the basics of supergeometry can find a friendly approach here, since only the concepts that are strictly necessary are introduced. On the other hand, the mathematician who wants to learn from physics will find that all the mathematical assumptions are firmly rooted in physical concepts. This may open up a channel of communication between the two communities working on different aspects of supersymmetry. Starting from special relativity and Minkowski space, the idea of conformal space and superspace is built step by step in a mathematically rigorous way, and always connecting with the ideas and notation used in physics. While the book is mainly devoted to these important physical examples of superspaces, it can also ...
Time as a geometric property of space
Directory of Open Access Journals (Sweden)
James Michael Chappell
2016-11-01
Full Text Available The proper description of time remains a key unsolved problem in science. Newton conceived of time as absolute and universal which it `flows equably without relation to anything external'}. In the nineteenth century, the four-dimensional algebraic structure of the quaternions developed by Hamilton, inspired him to suggest that they could provide a unified representation of space and time. With the publishing of Einstein's theory of special relativity these ideas then lead to the generally accepted Minkowski spacetime formulation in 1908. Minkowski, though, rejected the formalism of quaternions suggested by Hamilton and adopted rather an approach using four-vectors. The Minkowski framework is indeed found to provide a versatile formalism for describing the relationship between space and time in accordance with Einstein's relativistic principles, but nevertheless fails to provide more fundamental insights into the nature of time itself. In order to answer this question we begin by exploring the geometric properties of three-dimensional space that we model using Clifford geometric algebra, which is found to contain sufficient complexity to provide a natural description of spacetime. This description using Clifford algebra is found to provide a natural alternative to the Minkowski formulation as well as providing new insights into the nature of time. Our main result is that time is the scalar component of a Clifford space and can be viewed as an intrinsic geometric property of three-dimensional space without the need for the specific addition of a fourth dimension.
International Nuclear Information System (INIS)
Chu, Yi-Zen
2014-01-01
Motivated by the desire to understand the causal structure of physical signals produced in curved spacetimes – particularly around black holes – we show how, for certain classes of geometries, one might obtain its retarded or advanced minimally coupled massless scalar Green's function by using the corresponding Green's functions in the higher dimensional Minkowski spacetime where it is embedded. Analogous statements hold for certain classes of curved Riemannian spaces, with positive definite metrics, which may be embedded in higher dimensional Euclidean spaces. The general formula is applied to (d ≥ 2)-dimensional de Sitter spacetime, and the scalar Green's function is demonstrated to be sourced by a line emanating infinitesimally close to the origin of the ambient (d + 1)-dimensional Minkowski spacetime and piercing orthogonally through the de Sitter hyperboloids of all finite sizes. This method does not require solving the de Sitter wave equation directly. Only the zero mode solution to an ordinary differential equation, the “wave equation” perpendicular to the hyperboloid – followed by a one-dimensional integral – needs to be evaluated. A topological obstruction to the general construction is also discussed by utilizing it to derive a generalized Green's function of the Laplacian on the (d ≥ 2)-dimensional sphere
Texture classification using non-Euclidean Minkowski dilation
Florindo, Joao B.; Bruno, Odemir M.
2018-03-01
This study presents a new method to extract meaningful descriptors of gray-scale texture images using Minkowski morphological dilation based on the Lp metric. The proposed approach is motivated by the success previously achieved by Bouligand-Minkowski fractal descriptors on texture classification. In essence, such descriptors are directly derived from the morphological dilation of a three-dimensional representation of the gray-level pixels using the classical Euclidean metric. In this way, we generalize the dilation for different values of p in the Lp metric (Euclidean is a particular case when p = 2) and obtain the descriptors from the cumulated distribution of the distance transform computed over the texture image. The proposed method is compared to other state-of-the-art approaches (such as local binary patterns and textons for example) in the classification of two benchmark data sets (UIUC and Outex). The proposed descriptors outperformed all the other approaches in terms of rate of images correctly classified. The interesting results suggest the potential of these descriptors in this type of task, with a wide range of possible applications to real-world problems.
Analogies between Kruskal space and de Sitter space
International Nuclear Information System (INIS)
Rindler, W.
1986-01-01
Kruskal space is the analytical completion of Schwarzschild space and it consists of two outside and two inside Schwarzchild regions. Under suppression of the two angular coordinates, this space is usually diagrammed in terms of the Kruskal coordinates, μ,upsilon, much like Minkowski space is in terms of x, y. In particular, radial light paths correspond to +- 45 0 lines, the hyperbolas of μ/sup 2/ - upsilon/sup 2/ = a/sup 2/ represent uniformly accelerated particles (these being at rest in outer Schwarzschild space), and Lorentz transformations in μ, upsilon map the space into itself. Hermann Weyl first gave the analytic completion of de Sitter space as a hyper-hyperboloid μ/sub 1//sup 2/ + μ/sub 2//sup 2/ + μ/sub 3//sup 2/ + μ/sub 4//sup 2/ - upsilon/sup 2/ = a/sup 2/ in five-dimensional Minkowski space, which also contains two outside inside de Sitter regions. In a Weyl diagram, μ/sub 3/ and μ/sub 4/ are suppressed. There are many analogies: Lorentz transformations in μ/sub i/, upsilon map Weyl space into itself, the +- 45 0 generators are light paths, timelike plane hyperbolic sections are uniformly accelerated particles, and the horizon structure relative to each free worldline is analogous to the absolute horizon structure in Kruskal space
Visualization of Minkowski operations by computer graphics techniques
Roerdink, J.B.T.M.; Blaauwgeers, G.S.M.; Serra, J; Soille, P
1994-01-01
We consider the problem of visualizing 3D objects defined as a Minkowski addition or subtraction of elementary objects. It is shown that such visualizations can be obtained by using techniques from computer graphics such as ray tracing and Constructive Solid Geometry. Applications of the method are
Minkowski Functionals and Cluster Analysis for CMB Maps
Novikov, D.; Feldman, Hume A.; Shandarin, Sergei F.
We suggest novel statistics for the CMB maps that are sensitive to non-Gaussian features. These statistics are natural generalizations of the geometrical and topological methods that have been already used in cosmology such as the cumulative distribution function and genus. We compute the distribution functions of the Partial Minkowski Functionals for the excursion set above or bellow a constant temperature threshold. Minkowski Functionals are additive and are translationally and rotationally invariant. Thus, they can be used for patchy and/or incomplete coverage. The technique is highly efficient computationally (it requires only O(N) operations, where N is the number of pixels per one threshold level). Further, the procedure makes it possible to split large data sets into smaller subsets. The full advantage of these statistics can be obtained only on very large data sets. We apply it to the 4-year DMR COBE data corrected for the Galaxy contamination as an illustration of the technique.
Intrinsic Regularization in a Lorentz invariant non-orthogonal Euclidean Space
Tornow, Carmen
2006-01-01
It is shown that the Lorentz transformations can be derived for a non-orthogonal Euclidean space. In this geometry one finds the same relations of special relativity as the ones known from the orthogonal Minkowski space. In order to illustrate the advantage of a non-orthogonal Euclidean metric the two-point Green’s function at x = 0 for a self-interacting scalar field is calculated. In contrast to the Minkowski space the one loop mass correction derived from this function gives a convergent r...
κ-Minkowski Spacetimes and DSR Algebras: Fresh Look and Old Problems
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Andrzej Borowiec
2010-10-01
Full Text Available Some classes of Deformed Special Relativity (DSR theories are reconsidered within the Hopf algebraic formulation. For this purpose we shall explore a minimal framework of deformed Weyl-Heisenberg algebras provided by a smash product construction of DSR algebra. It is proved that this DSR algebra, which uniquely unifies κ-Minkowski spacetime coordinates with Poincaré generators, can be obtained by nonlinear change of generators from undeformed one. Its various realizations in terms of the standard (undeformed Weyl-Heisenberg algebra opens the way for quantum mechanical interpretation of DSR theories in terms of relativistic (Stückelberg version Quantum Mechanics. On this basis we review some recent results concerning twist realization of κ-Minkowski spacetime described as a quantum covariant algebra determining a deformation quantization of the corresponding linear Poisson structure. Formal and conceptual issues concerning quantum κ-Poincaré and κ-Minkowski algebras as well as DSR theories are discussed. Particularly, the so-called ''q-analog'' version of DSR algebra is introduced. Is deformed special relativity quantization of doubly special relativity remains an open question. Finally, possible physical applications of DSR algebra to description of some aspects of Planck scale physics are shortly recalled.
Dirac spinors for doubly special relativity and κ-Minkowski noncommutative spacetime
International Nuclear Information System (INIS)
Agostini, Alessandra; Amelino-Camelia, Giovanni; Arzano, Michele
2004-01-01
We construct a Dirac equation that is consistent with one of the recently-proposed schemes for a 'doubly special relativity', a relativity with both an observer-independent velocity scale (still naturally identified with the speed-of-light constant) and an observer-independent length/momentum scale (possibly given by the Planck length/momentum). We find that the introduction of the second observer-independent scale only induces a mild deformation of the structure of Dirac spinors. We also show that our modified Dirac equation naturally arises in constructing a Dirac equation in the κ-Minkowski noncommutative spacetime. Previous, more heuristic studies had already argued for a possible role of doubly special relativity in κ-Minkowski, but remained vague on the nature of the consistency requirements that should be implemented in order to assure the observer-independence of the two scales. We find that a key role is played by the choice of a differential calculus in κ-Minkowski. A much-studied choice of the differential calculus does lead to our doubly special relativity Dirac equation, but a different scenario is encountered for another popular choice of differential calculus
Geodesic deviation and Minikowski space
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Barraco, D.; Kozameh, C.; Newman, E.T.; Tod, P.
1990-01-01
The authors study the properties of the solution space of local surface-forming null sub-congruences in the neighborhood of a given null geodesic in a pseudo-Riemannian space-time. This solution space is a three-dimensional manifold, naturally endowed with a conformal Minkowski metric
Radiation forces and the Abraham-Minkowski problem
Brevik, Iver
2018-04-01
Recent years have witnessed a number of beautiful experiments in radiation optics. Our purpose with this paper is to highlight some developments of radiation pressure physics in general, and thereafter to focus on the importance of the mentioned experiments in regard to the classic Abraham-Minkowski problem. That means, what is the “correct” expression for electromagnetic momentum density in continuous matter. In our opinion, one often sees that authors over-interpret the importance of their experimental findings with respect to the momentum problem. Most of these experiments are actually unable to discriminate between these energy-momentum tensors at all, since they can be easily described in terms of force expressions that are common for Abraham and Minkowski. Moreover, we emphasize the inherent ambiguity in applying the formal conservation principles to the radiation field in a dielectric, the reason being that the electromagnetic field in matter is only a subsystem which has to be supplemented by the mechanical subsystem to be closed. Finally, we make some suggestions regarding the connection between macroscopic electrodynamics and the Casimir effect, suggesting that there is a limit for the magnitudes of the cutoff parameters in QFT related to surface tension in ordinary hydromechanics.
Appleby, Stephen; Chingangbam, Pravabati; Park, Changbom; Hong, Sungwook E.; Kim, Juhan; Ganesan, Vidhya
2018-05-01
We apply the Minkowski tensor statistics to two-dimensional slices of the three-dimensional matter density field. The Minkowski tensors are a set of functions that are sensitive to directionally dependent signals in the data and, furthermore, can be used to quantify the mean shape of density fields. We begin by reviewing the definition of Minkowski tensors and introducing a method of calculating them from a discretely sampled field. Focusing on the statistic {W}21,1—a 2 × 2 matrix—we calculate its value for both the entire excursion set and individual connected regions and holes within the set. To study the morphology of structures within the excursion set, we calculate the eigenvalues λ 1, λ 2 for the matrix {W}21,1 of each distinct connected region and hole and measure their mean shape using the ratio β \\equiv . We compare both {W}21,1 and β for a Gaussian field and a smoothed density field generated from the latest Horizon Run 4 cosmological simulation to study the effect of gravitational collapse on these functions. The global statistic {W}21,1 is essentially independent of gravitational collapse, as the process maintains statistical isotropy. However, β is modified significantly, with overdensities becoming relatively more circular compared to underdensities at low redshifts. When applying the statistics to a redshift-space distorted density field, the matrix {W}21,1 is no longer proportional to the identity matrix, and measurements of its diagonal elements can be used to probe the large-scale velocity field.
Scalar field propagation in the ϕ 4 κ-Minkowski model
Meljanac, S.; Samsarov, A.; Trampetić, J.; Wohlgenannt, M.
2011-12-01
In this article we use the noncommutative (NC) κ-Minkowski ϕ 4 model based on the κ-deformed star product, (★ h ). The action is modified by expanding up to linear order in the κ-deformation parameter a, producing an effective model on commutative spacetime. For the computation of the tadpole diagram contributions to the scalar field propagation/self-energy, we anticipate that statistics on the κ-Minkowski is specifically κ-deformed. Thus our prescription in fact represents hybrid approach between standard quantum field theory (QFT) and NCQFT on the κ-deformed Minkowski spacetime, resulting in a κ-effective model. The propagation is analyzed in the framework of the two-point Green's function for low, intermediate, and for the Planckian propagation energies, respectively. Semiclassical/hybrid behavior of the first order quantum correction do show up due to the κ-deformed momentum conservation law. For low energies, the dependence of the tadpole contribution on the deformation parameter a drops out completely, while for Planckian energies, it tends to a fixed finite value. The mass term of the scalar field is shifted and these shifts are very different at different propagation energies. At the Planck-ian energies we obtain the direction dependent κ-modified dispersion relations. Thus our κ-effective model for the massive scalar field shows a birefringence effect.
Space-Time, Phenomenology, and the Picture Theory of Language
Grelland, Hans Herlof
To estimate Minkowski's introduction of space-time in relativity, the case is made for the view that abstract language and mathematics carries meaning not only by its connections with observation but as pictures of facts. This view is contrasted to the more traditional intuitionism of Hume, Mach, and Husserl. Einstein's attempt at a conceptual reconstruction of space and time as well as Husserl's analysis of the loss of meaning in science through increasing abstraction is analysed. Wittgenstein's picture theory of language is used to explain how meaning is conveyed by abstract expressions, with the Minkowski space as a case.
Bliokh, Konstantin Y.; Bekshaev, Aleksandr Y.; Nori, Franco
2017-12-01
We examine the momentum and angular momentum (AM) properties of monochromatic optical fields in dispersive and inhomogeneous isotropic media, using the Abraham- and Minkowski-type approaches, as well as the kinetic (Poynting-like) and canonical (with separate spin and orbital degrees of freedom) pictures. While the kinetic Abraham–Poynting momentum describes the energy flux and the group velocity of the wave, the Minkowski-type quantities, with proper dispersion corrections, describe the actual momentum and AM carried by the wave. The kinetic Minkowski-type momentum and AM densities agree with phenomenological results derived by Philbin. Using the canonical spin–orbital decomposition, previously used for free-space fields, we find the corresponding canonical momentum, spin and orbital AM of light in a dispersive inhomogeneous medium. These acquire a very natural form analogous to the Brillouin energy density and are valid for arbitrary structured fields. The general theory is applied to a non-trivial example of a surface plasmon-polariton (SPP) wave at a metal-vacuum interface. We show that the integral momentum of the SPP per particle corresponds to the SPP wave vector, and hence exceeds the momentum of a photon in the vacuum. We also provide the first accurate calculation of the transverse spin and orbital AM of the SPP. While the intrinsic orbital AM vanishes, the transverse spin can change its sign depending on the SPP frequency. Importantly, we present both macroscopic and microscopic calculations, thereby proving the validity of the general phenomenological results. The microscopic theory also predicts a transverse magnetization in the metal (i.e. a magnetic moment for the SPP) as well as the corresponding direct magnetization current, which provides the difference between the Abraham and Minkowski momenta.
Y Bliokh, Konstantin; Y Bekshaev, Aleksandr; Nori, Franco
2017-12-01
We examine the momentum and angular momentum (AM) properties of monochromatic optical fields in dispersive and inhomogeneous isotropic media, using the Abraham- and Minkowski-type approaches, as well as the kinetic (Poynting-like) and canonical (with separate spin and orbital degrees of freedom) pictures. While the kinetic Abraham-Poynting momentum describes the energy flux and the group velocity of the wave, the Minkowski-type quantities, with proper dispersion corrections, describe the actual momentum and AM carried by the wave. The kinetic Minkowski-type momentum and AM densities agree with phenomenological results derived by Philbin. Using the canonical spin-orbital decomposition, previously used for free-space fields, we find the corresponding canonical momentum, spin and orbital AM of light in a dispersive inhomogeneous medium. These acquire a very natural form analogous to the Brillouin energy density and are valid for arbitrary structured fields. The general theory is applied to a non-trivial example of a surface plasmon-polariton (SPP) wave at a metal-vacuum interface. We show that the integral momentum of the SPP per particle corresponds to the SPP wave vector, and hence exceeds the momentum of a photon in the vacuum. We also provide the first accurate calculation of the transverse spin and orbital AM of the SPP. While the intrinsic orbital AM vanishes, the transverse spin can change its sign depending on the SPP frequency. Importantly, we present both macroscopic and microscopic calculations, thereby proving the validity of the general phenomenological results. The microscopic theory also predicts a transverse magnetization in the metal (i.e. a magnetic moment for the SPP) as well as the corresponding direct magnetization current, which provides the difference between the Abraham and Minkowski momenta.
Minkowski spacetime does not apply to a homogeneously accelerating medium
Coleman, Brian
Home and comoving inertial frame parameters of an individual point of an idealized medium of launch length L uniformly co-accelerating between identical fixed-thrust rockets, are well known. This is not the case with the varying inter-rocket radar periods and related implications regarding a changing 'noninertial own-length' Λ which differs from a front rocket's retrospective separation L from the simultaneously relatively moving rear rocket. On the other hand, the nonhomogeneous acceleration case involving every comoving frame's unchanging perception of a contrived 'rigor mortis' medium (so-called 'rigid motion' traditionally associated with 'Rindler coordinates') whereby Λ = L = L , constitutes the sole extended accelerating medium scenario where the entrenched Minkowski metric is actually applicable. Paraphrasing Wolfgang Pauli, not only is Minkowski spacetime not correct [in the general sense], it is not even wrong [in the restricted sense].
The extensions of space-time. Physics in the 8-dimensional homogeneous space D = SU(2,2)/K
International Nuclear Information System (INIS)
Barut, A.O.
1993-07-01
The Minkowski space-time is only a boundary of a bigger homogeneous space of the conformal group. The conformal group is the symmetry group of our most fundamental massless wave equations. These extended groups and spaces have many remarkable properties and physical implications. (author). 36 refs
On the state space of the dipole ghost
International Nuclear Information System (INIS)
Binegar, B.
1984-01-01
A particular representation of SO(4, 2) is identified with the state space of the free dipole ghost. This representation is then given an explicit realization as the solution space of a 4th-order wave equation on a spacetime locally isomorphic to Minkowski space. A discrete basis for this solution space is given, as well as an explicit expression for its SO(4, 2) invariant inner product. The connection between the modes of dipole field and those of the massless scalar field is clarified, and a recent conjecture concerning the restriction of the dipole representation to the Poincare subgroup is confirmed. A particular coordinate transformation then reveals the theory of the dipole ghost in Minkowski space. Finally, it is shown that the solution space of the dipole equation is not unitarizable in a Poincare invariant manner. (orig.)
Coordinates system adapted to non-inertial frames in Minkowski spacetime
Energy Technology Data Exchange (ETDEWEB)
Felix, Patricio; Dahia, F. [Universidade Federal de Campo Grande (UFCG), PB (Brazil)
2011-07-01
Full text: Static observers in curved spacetimes may interpret their proper acceleration as the opposite of a local gravitation Field (in the Newtonian sense). Based on this interpretation and the equivalence principle, we are led to investigate congruences of timelike curves in Minkowski spacetime whose acceleration field coincides with the acceleration field of static observers of curved spaces. The congruences give rise to non-inertial frames that are examined. Specifically we find, based on the locality principle, the embedding of simultaneity hypersurfaces adapted to the non-inertial frame in an explicit form for arbitrary acceleration fields. This work has motivated the fact that according to the principle of equivalence, it is expected that some physical features of gravity cam be mimicked by accelerated frames in Minkowski spacetime. The Rindler frame, which is adapted to a family of uniformly accelerated observers, is a famous example of a non-inertial system that simulates some characteristics of a black hole's geometry. This frame has been widely investigated in the literature and here we are going to start our discussion pointing out a peculiar aspect of the Rindler frame. It is related to the remarkable characteristic that the proper acceleration 'a' of Rindler observers, which is constant along their world lines, varies according to the law a = 1/ρ in relation to the observers, where ρ corresponds to the initial distance of the observers with respect to the origin of an inertial frame. This particular dependence of a ρ is connected to the behavior of static observers in Schwarzschild geometry in the vicinity of the horizon. Indeed, if ρ denotes the radial distance of an observer to the horizon, then, the proper acceleration the observers need in order to stay at rest in their position close to the horizon is proportional to 1/ρ. Therefore the Rindler congruence and the static Schwarzschild observers have the same acceleration field
Coordinates system adapted to non-inertial frames in Minkowski spacetime
International Nuclear Information System (INIS)
Felix, Patricio; Dahia, F.
2011-01-01
Full text: Static observers in curved spacetimes may interpret their proper acceleration as the opposite of a local gravitation Field (in the Newtonian sense). Based on this interpretation and the equivalence principle, we are led to investigate congruences of timelike curves in Minkowski spacetime whose acceleration field coincides with the acceleration field of static observers of curved spaces. The congruences give rise to non-inertial frames that are examined. Specifically we find, based on the locality principle, the embedding of simultaneity hypersurfaces adapted to the non-inertial frame in an explicit form for arbitrary acceleration fields. This work has motivated the fact that according to the principle of equivalence, it is expected that some physical features of gravity cam be mimicked by accelerated frames in Minkowski spacetime. The Rindler frame, which is adapted to a family of uniformly accelerated observers, is a famous example of a non-inertial system that simulates some characteristics of a black hole's geometry. This frame has been widely investigated in the literature and here we are going to start our discussion pointing out a peculiar aspect of the Rindler frame. It is related to the remarkable characteristic that the proper acceleration 'a' of Rindler observers, which is constant along their world lines, varies according to the law a = 1/ρ in relation to the observers, where ρ corresponds to the initial distance of the observers with respect to the origin of an inertial frame. This particular dependence of a ρ is connected to the behavior of static observers in Schwarzschild geometry in the vicinity of the horizon. Indeed, if ρ denotes the radial distance of an observer to the horizon, then, the proper acceleration the observers need in order to stay at rest in their position close to the horizon is proportional to 1/ρ. Therefore the Rindler congruence and the static Schwarzschild observers have the same acceleration field a(ρ). However
Experiences of women living with borderline personality disorder
Directory of Open Access Journals (Sweden)
N. Ntshingila
2016-10-01
Full Text Available There is limited understanding of the experiences of women living with borderline personality disorder. It was therefore decided to discover how women living with this disorder would tell their life story. For the researcher, who worked in a psychotherapy ward where most women were living with borderline personality disorder, the care of these women was of vital importance, as they were less understood by mental health care providers.The research aimed to explore and describe the experiences of women living with borderline personality disorder. A qualitative, explorative, descriptive and contextual study design was used. Data was collected through in-depth phenomenological interviews that focused on the central question, “Tell me your life story”. Eight participants living with borderline personality disorder were interviewed. Tesch's method for data analysis was used (Creswell, 2009:186, along with an independent coder. Measures to ensure trustworthiness and ethical principles were applied throughout the research. From the findings obtained by means of the interviews of women living with borderline personality disorder, it was evident that there were childhood experiences of living in an unsafe space, related to unhealthy family dynamics, boundary violations and educational challenges. They experienced chronic feelings of emptiness in their relationships with theself. They also presented with a pattern of unstable interpersonal relationships and compromised mental health, which was apparent through the early on set of mental problems, emotional upheaval, looking for emotional escape and having different triggerfactors. Lastly, all these women yearned for facilitated mental health.
Electromagnetic momentum in magnetic media and the Abraham-Minkowski controversy
Energy Technology Data Exchange (ETDEWEB)
Jimenez, J L [Departamento de Fisica, Division de Ciencias Basicas e Ingenieria, Universidad Autonoma Metropolitana, Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Apartado Postal 21-463, Mexico DF, 04000 (Mexico); Campos, I [Departamento de Fisica, Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Apartado Postal 21-463, Mexico DF, 04000 (Mexico); Lopez-Marino, M A, E-mail: jlj@xanum.uam.mx, E-mail: iecampos@prodigy.net.mx, E-mail: malm@itesm.mx [Departamento de Ingenieria, Tecnologico de Monterrey, Campus Central de Veracruz, Av. E. Garza Sada 1, Apartado Postal 314, Cordoba, Veracruz, 94500 (Mexico)
2011-05-15
We explore the consequences of a force density, - (1)/c ({partial_derivative}M)/{partial_derivative}t x E, studied by some authors, for the device designed by Lai (1980 Am. J. Phys. 48 658) to analyse which definition of electromagnetic momentum density, either Minkowski's or Abraham's, is consistent with mechanical torques that arise from the change in time of a magnetic field, which produces an induced electric field that acts on free and polarization charges. It is found that Minkowski's definition is consistent with the mechanical torques associated with free charges, while Abraham's is consistent with mechanical torques associated with both free and polarization charges. We show that with this new force density Lai's work (1980 Am. J. Phys. 48 658) can be extended to include magnetic media. The results are consistent with Abraham's definition of electromagnetic momentum density, extending in this way its usefulness to magnetic media.
Elementary particles in curved spaces
International Nuclear Information System (INIS)
Lazanu, I.
2004-01-01
The theories in particle physics are developed currently, in Minkowski space-time starting from the Poincare group. A physical theory in flat space can be seen as the limit of a more general physical theory in a curved space. At the present time, a theory of particles in curved space does not exist, and thus the only possibility is to extend the existent theories in these spaces. A formidable obstacle to the extension of physical models is the absence of groups of motion in more general Riemann spaces. A space of constant curvature has a group of motion that, although differs from that of a flat space, has the same number of parameters and could permit some generalisations. In this contribution we try to investigate some physical implications of the presumable existence of elementary particles in curved space. In de Sitter space (dS) the invariant rest mass is a combination of the Poincare rest mass and the generalised angular momentum of a particle and it permits to establish a correlation with the vacuum energy and with the cosmological constant. The consequences are significant because in an experiment the local structure of space-time departs from the Minkowski space and becomes a dS or AdS space-time. Discrete symmetry characteristics of the dS/AdS group suggest some arguments for the possible existence of the 'mirror matter'. (author)
Ob the Froissart-Martin bound in spaces with compact dimensions
Petrov, V A
2002-01-01
It is shown by the example of the 5-dimensional space-time, that by availability of the additional compact (space-time-like) measurements to the general Minkowski space all the conditions for proving the Froissart-Martin bound retain their force. Thus, by the circumference R -> 0 the theory smoothly transfers to the theory of the neutral scalar field in the 4-dimensional Minkowski space-time. It was assumed in this work, that the masses are bound from below by the non-zero value. The bounds for elastic scattering by absence of the mass gap are trivial, however in this case it is obviously possible to obtain also nontrivial bounds for complete inelastic cross sections. It takes place in the Regge-eikonal approach though there exist no strong proof for it
Electromagnetic Momentum in Magnetic Media and the Abraham-Minkowski Controversy
Jimenez, J. L.; Campos, I.; Lopez-Marino, M. A.
2011-01-01
We explore the consequences of a force density, [image omitted], studied by some authors, for the device designed by Lai (1980 "Am. J. Phys. 48" 658) to analyse which definition of electromagnetic momentum density, either Minkowski's or Abraham's, is consistent with mechanical torques that arise from the change in time of a magnetic field, which…
Utilizing Minkowski functionals for image analysis: a marching square algorithm
International Nuclear Information System (INIS)
Mantz, Hubert; Jacobs, Karin; Mecke, Klaus
2008-01-01
Comparing noisy experimental image data with statistical models requires a quantitative analysis of grey-scale images beyond mean values and two-point correlations. A real-space image analysis technique is introduced for digitized grey-scale images, based on Minkowski functionals of thresholded patterns. A novel feature of this marching square algorithm is the use of weighted side lengths for pixels, so that boundary lengths are captured accurately. As examples to illustrate the technique we study surface topologies emerging during the dewetting process of thin films and analyse spinodal decomposition as well as turbulent patterns in chemical reaction–diffusion systems. The grey-scale value corresponds to the height of the film or to the concentration of chemicals, respectively. Comparison with analytic calculations in stochastic geometry models reveals a remarkable agreement of the examples with a Gaussian random field. Thus, a statistical test for non-Gaussian features in experimental data becomes possible with this image analysis technique—even for small image sizes. Implementations of the software used for the analysis are offered for download
Borderline Personality in the Medical Setting
Sansone, Lori A.
2015-01-01
Objective: Individuals with borderline personality disorder in mental health settings tend to present with relationship difficulties, mood instability/dysphoria, and overt self-harm behavior. In contrast, it appears that individuals with borderline personality disorder in medical settings manifest physical symptoms that are medically difficult to substantiate. Through a review of the literature, we examine 2 symptom manifestations among patients with borderline personality in primary care and general medical settings—namely pain sensitivity and multiple somatic complaints. In addition to reviewing the research of others, we also highlight our own investigations into these 2 areas. Data Sources: We conducted a literature search of the PubMed database and a previous version of the PsycINFO search engine (no restrictions). Search terms included borderline personality, borderline personality disorder, personality disorders; chronic pain, pain, pain syndromes; and somatization disorder, Briquet’s syndrome, somatic preoccupation, somatic. Study Selection: Published articles related to borderline personality, pain and somatic symptoms (ie, somatization disorder, somatic preoccupation) were examined. Results: According to our review, the literature indicates higher-than-expected rates of borderline personality disorder among patients in primary care and general medical settings who present with chronic pain conditions and/or somatic preoccupation. Conclusions: Unlike patients with borderline personality disorder in mental health settings, who tend to present with relationship difficulties, mood instability/dysphoria, and overt self-harm behavior, patients with borderline personality disorder in primary care settings tend to present with unsubstantiated chronic pain of various types as well as somatic preoccupation. PMID:26644960
Ross, Donald R; Favero, Marcus
2002-01-01
The experience of many patients with borderline personality is intense and kaleidoscopic. These qualities may be represented in film in ways that reflect and convey their essential features that are less readily captured in words. Quentin Tarantino has produced a trilogy of films that bring to light and to life the borderline experience. We use these movies to illustrate and discuss five key borderline themes: the fluid nature of drive derivatives, the discontinuous experience of time and space, the coniflicted search for an idealized parent, antisocial distortions of the superego, and the organizing and stabilizing function of a central romantic fantasy.
$\\kappa$-Minkowski star product in any dimension from symplectic realization
Pachol, Anna; Vitale, Patrizia
2015-01-01
We derive an explicit expression for the star product reproducing the $\\kappa$-Minkowski Lie algebra in any dimension $n$. The result is obtained by suitably reducing the Wick-Voros star product defined on $\\mathbb{C}^{d}_\\theta$ with $n=d+1$. It is thus shown that the new star product can be obtained from a Jordanian twist.
On de Sitter-like and Minkowski-like spacetimes
International Nuclear Information System (INIS)
Luebbe, Christian; Kroon, Juan Antonio Valiente
2009-01-01
Friedrich's proofs for the global existence results of de Sitter-like spacetimes and of semi-global existence of Minkowski-like spacetimes (Friedrich 1986 Commun. Math. Phys. 107 587) are re-examined and discussed, making use of the extended conformal field equations and a gauge based on conformal geodesics. In this gauge, the location of the conformal boundary of the spacetimes is known a priori once the initial data have been prescribed. Thus, it provides an analysis which is conceptually and calculationally simpler.
Coproduct and star product in field theories on Lie-algebra noncommutative space-times
International Nuclear Information System (INIS)
Amelino-Camelia, Giovanni; Arzano, Michele
2002-01-01
We propose a new approach to field theory on κ-Minkowski noncommutative space-time, a popular example of Lie-algebra space-time. Our proposal is essentially based on the introduction of a star product, a technique which is proving to be very fruitful in analogous studies of canonical noncommutative space-times, such as the ones recently found to play a role in the description of certain string-theory backgrounds. We find to be incorrect the expectation, previously reported in the literature, that the lack of symmetry of the κ-Poincare coproduct should lead to interaction vertices that are not symmetric under exchanges of the momenta of identical particles entering the relevant processes. We show that in κ-Minkowski the coproduct and the star product must indeed treat momenta in a nonsymmetric way, but the overall structure of interaction vertices is symmetric under exchange of identical particles. We also show that in κ-Minkowski field theories it is convenient to introduce the concepts of 'planar' and 'nonplanar' Feynman loop diagrams, again in close analogy with the corresponding concepts previously introduced in the study of field theories in canonical noncommutative space-times
Böbel, A.; Knapek, C. A.; Räth, C.
2018-05-01
Experiments of the recrystallization processes in two-dimensional complex plasmas are analyzed to rigorously test a recently developed scale-free phase transition theory. The "fractal-domain-structure" (FDS) theory is based on the kinetic theory of Frenkel. It assumes the formation of homogeneous domains, separated by defect lines, during crystallization and a fractal relationship between domain area and boundary length. For the defect number fraction and system energy a scale-free power-law relation is predicted. The long-range scaling behavior of the bond-order correlation function shows clearly that the complex plasma phase transitions are not of the Kosterlitz, Thouless, Halperin, Nelson, and Young type. Previous preliminary results obtained by counting the number of dislocations and applying a bond-order metric for structural analysis are reproduced. These findings are supplemented by extending the use of the bond-order metric to measure the defect number fraction and furthermore applying state-of-the-art analysis methods, allowing a systematic testing of the FDS theory with unprecedented scrutiny: A morphological analysis of lattice structure is performed via Minkowski tensor methods. Minkowski tensors form a complete family of additive, motion covariant and continuous morphological measures that are sensitive to nonlinear properties. The FDS theory is rigorously confirmed and predictions of the theory are reproduced extremely well. The predicted scale-free power-law relation between defect fraction number and system energy is verified for one more order of magnitude at high energies compared to the inherently discontinuous bond-order metric. It is found that the fractal relation between crystalline domain area and circumference is independent of the experiment, the particular Minkowski tensor method, and the particular choice of parameters. Thus, the fractal relationship seems to be inherent to two-dimensional phase transitions in complex plasmas. Minkowski
Analysis of image heterogeneity using 2D Minkowski functionals detects tumor responses to treatment.
Larkin, Timothy J; Canuto, Holly C; Kettunen, Mikko I; Booth, Thomas C; Hu, De-En; Krishnan, Anant S; Bohndiek, Sarah E; Neves, André A; McLachlan, Charles; Hobson, Michael P; Brindle, Kevin M
2014-01-01
The acquisition of ever increasing volumes of high resolution magnetic resonance imaging (MRI) data has created an urgent need to develop automated and objective image analysis algorithms that can assist in determining tumor margins, diagnosing tumor stage, and detecting treatment response. We have shown previously that Minkowski functionals, which are precise morphological and structural descriptors of image heterogeneity, can be used to enhance the detection, in T1 -weighted images, of a targeted Gd(3+) -chelate-based contrast agent for detecting tumor cell death. We have used Minkowski functionals here to characterize heterogeneity in T2 -weighted images acquired before and after drug treatment, and obtained without contrast agent administration. We show that Minkowski functionals can be used to characterize the changes in image heterogeneity that accompany treatment of tumors with a vascular disrupting agent, combretastatin A4-phosphate, and with a cytotoxic drug, etoposide. Parameterizing changes in the heterogeneity of T2 -weighted images can be used to detect early responses of tumors to drug treatment, even when there is no change in tumor size. The approach provides a quantitative and therefore objective assessment of treatment response that could be used with other types of MR image and also with other imaging modalities. Copyright © 2013 Wiley Periodicals, Inc.
Spinors and supersymmetry in four-dimensional Euclidean space
International Nuclear Information System (INIS)
McKeon, D.G.C.; Sherry, T.N.
2001-01-01
Spinors in four-dimensional Euclidean space are treated using the decomposition of the Euclidean space SO(4) symmetry group into SU(2)xSU(2). Both 2- and 4-spinor representations of this SO(4) symmetry group are shown to differ significantly from the corresponding spinor representations of the SO(3, 1) symmetry group in Minkowski space. The simplest self conjugate supersymmetry algebra allowed in four-dimensional Euclidean space is demonstrated to be an N=2 supersymmetry algebra which resembles the N=2 supersymmetry algebra in four-dimensional Minkowski space. The differences between the two supersymmetry algebras gives rise to different representations; in particular an analysis of the Clifford algebra structure shows that the momentum invariant is bounded above by the central charges in 4dE, while in 4dM the central charges bound the momentum invariant from below. Dimensional reduction of the N=1 SUSY algebra in six-dimensional Minkowski space (6dM) to 4dE reproduces our SUSY algebra in 4dE. This dimensional reduction can be used to introduce additional generators into the SUSY algebra in 4dE. Well known interpolating maps are used to relate the N=2 SUSY algebra in 4dE derived in this paper to the N=2 SUSY algebra in 4dM. The nature of the spinors in 4dE allows us to write an axially gauge invariant model which is shown to be both Hermitian and anomaly-free. No equivalent model exists in 4dM. Useful formulae in 4dE are collected together in two appendixes
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Ahmad Mirgol
2018-03-01
Full Text Available Background and Objectives: The borderline personality disorder includes a cluster of syndromes and symptoms characterized by instable and impulsive behaviors. The aim of the present study was to investigate the correlation of alexithymia in people with borderline tendencies with impulsivity, self-harm and borderline personality traits. Material and Methods: In a descriptive-correlational and cross sectional research approach, 350 students from Tabriz University were selected using random cluster sampling. From this sample, 115 people with a borderline score higher than the cut-off point were chosen and labeled as people with borderline tendencies. Toronto Alexithymia Scale-20, STB, and SHI questionnaires were used to collect data. The data were analyzed using Pearson product-moment correlation and simultaneous multiple regression by SPSS software v.21. Results: The findings indicated that alexithymia has a positive and meaningful relationship with borderline personality traits (r=0.36, p Conclusion: Based on these findings, we can conclude that alexithymia and problems in identifying feelings are the main determinants of borderline personality traits and impulsivity. Also, alexithymia and problems in identifying feelings and problems in describing feelings subscales are the main determinants of self-harm.
Racing a quantum computer through Minkowski spacetime
International Nuclear Information System (INIS)
Biamonte, Jacob D
2010-01-01
The Lorentzian length of a timelike curve connecting both endpoints of a computation in Minkowski spacetime is smaller than the Lorentzian length of the corresponding geodesic. In this talk, I will point out some properties of spacetime that allow an inertial classical computer to outperform a quantum one, at the completion of a long journey. We will focus on a comparison between the optimal quadratic Grover speed up from quantum computing and an n=2 speedup using classical computers and relativistic effects. These results are not practical as a new model of computation, but allow us to probe the ultimate limits physics places on computers.
MRI appearances of borderline ovarian tumours
Energy Technology Data Exchange (ETDEWEB)
Bent, C.L. [Department of Diagnostic Imaging, St Bartholomew' s Hospital, West Smithfield, London (United Kingdom)], E-mail: clare.bent@bartsandthelondon.nhs.uk; Sahdev, A.; Rockall, A.G. [Department of Diagnostic Imaging, St Bartholomew' s Hospital, West Smithfield, London (United Kingdom); Singh, N. [Department of Pathology, St Bartholomew' s Hospital, West Smithfield, London (United Kingdom); Sohaib, S.A. [Department of Radiology, Royal Marsden Hospital, London (United Kingdom); Reznek, R.H. [Cancer Imaging, St Bartholomew' s Hospital, West Smithfield, London (United Kingdom)
2009-04-15
This review was performed to describe the range of magnetic resonance imaging (MRI) appearances of borderline ovarian tumours. The MRI findings in 26 patients with 31 borderline ovarian tumours (mean age: 40.1 years, range: 14-85 years) were retrospectively reviewed. For each tumour, site, size, MRI characteristics, and enhancement following gadolinium administration were recorded. There were 20 serous and 11 mucinous borderline ovarian subtypes. Nine of 26 patients demonstrated bilateral disease on MRI; synchronous contralateral ovarian disease included three benign, five serous borderline, and one serous invasive tumour. A history of a metachronous mucinous borderline tumour was identified in one patient. MRI appearances were classified into four morphological categories: group 1 (6/31, 19%), unilocular cysts; group 2 (6/31, 19%), minimally septate cysts with papillary projections; group 3 (14/31, 45%), markedly septate lesions with plaque-like excrescences; and group 4 (5/31, 16%), predominantly solid with exophytic papillary projections, all of serous subtype. There was a significant difference in mean volume between serous (841.5 cm{sup 3}) and mucinous (6358.2 cm{sup 3}) subtypes (p = 0.009). All tumours demonstrated at least one MRI feature suggestive of malignancy. The present review demonstrates the variable MRI appearances of borderline ovarian tumours along with imaging features suggestive of tumour subtype. In patients in whom the clinical features are suggestive of a borderline ovarian tumour (young age and normal or minimally elevated CA125), the ability to predict a borderline disease using morphological features observed on MRI would be extremely helpful in surgical planning, with the potential to offer fertility or ovary-preserving surgery. Future studies are required to further this aim.
Genome-wide analyses of borderline personality features
Lubke, G.H.; Laurin, C.; Amin, N.; Hottenga, J.J.; Willemsen, G.; Grootheest, G.; Abdellaoui, A.; Karssen, L.C.; Oostra, B.A.; van Duijn, C.M.; Penninx, B.W.J.H.; Boomsma, D.I.
2014-01-01
The heritability of borderline personality (BP) features has been established in multiple twin and family studies. Using data from the borderline subscale of the Personality Assessment Inventory Borderline Features Scale (PAI-BOR) collected in two Dutch cohorts (N=7125), the Netherlands Twin
Transtorno borderline: história e atualidade
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Paulo Dalgalarrondo
Full Text Available No presente trabalho é feita uma revisão histórica e psicopatológica do distúrbio borderline. O autor sugere que a categoria clínica introduzida por Kahlbaum, em 1890, “heiboidophenie”, pode ser considerada como um protoconceito na origem do conceito de transtorno borderline. No final dos anos 70 e 80, sob a influência do DMS-III, a esquizofrenia latente ou borderline se transformava em dois subtipos de transtorno de personalidade: borderline e esquizotípico. Alguns aspectos psicopatológicos do Transtorno de Personalidade Borderline são revistos, com especial ênfase sobre os sintomas afetivos e as alterações no plano das relações interpessoais.
Relativistic positioning in Schwarzschild space-time
International Nuclear Information System (INIS)
Puchades, Neus; Sáez, Diego
2015-01-01
In the Schwarzschild space-time created by an idealized static spherically symmetric Earth, two approaches -based on relativistic positioning- may be used to estimate the user position from the proper times broadcast by four satellites. In the first approach, satellites move in the Schwarzschild space-time and the photons emitted by the satellites follow null geodesics of the Minkowski space-time asymptotic to the Schwarzschild geometry. This assumption leads to positioning errors since the photon world lines are not geodesics of any Minkowski geometry. In the second approach -the most coherent one- satellites and photons move in the Schwarzschild space-time. This approach is a first order one in the dimensionless parameter GM/R (with the speed of light c=1). The two approaches give different inertial coordinates for a given user. The differences are estimated and appropriately represented for users located inside a great region surrounding Earth. The resulting values (errors) are small enough to justify the use of the first approach, which is the simplest and the most manageable one. The satellite evolution mimics that of the GALILEO global navigation satellite system. (paper)
Quantum corrections in thermal states of fermions on anti-de Sitter space-time
Ambruş, Victor E.; Winstanley, Elizabeth
2017-12-01
We study the energy density and pressure of a relativistic thermal gas of massless fermions on four-dimensional Minkowski and anti-de Sitter space-times using relativistic kinetic theory. The corresponding quantum field theory quantities are given by components of the renormalized expectation value of the stress-energy tensor operator acting on a thermal state. On Minkowski space-time, the renormalized vacuum expectation value of the stress-energy tensor is by definition zero, while on anti-de Sitter space-time the vacuum contribution to this expectation value is in general nonzero. We compare the properties of the vacuum and thermal expectation values of the energy density and pressure for massless fermions and discuss the circumstances in which the thermal contribution dominates over the vacuum one.
Minkowski spacetime and Lorentz invariance: The cart and the horse or two sides of a single coin?
Acuña, Pablo
2016-08-01
Michel Janssen and Harvey Brown have driven a prominent recent debate concerning the direction of an alleged arrow of explanation between Minkowski spacetime and Lorentz invariance of dynamical laws in special relativity. In this article, I critically assess this controversy with the aim of clarifying the explanatory foundations of the theory. First, I show that two assumptions shared by the parties-that the dispute is independent of issues concerning spacetime ontology, and that there is an urgent need for a constructive interpretation of special relativity-are problematic and negatively affect the debate. Second, I argue that the whole discussion relies on a misleading conception of the link between Minkowski spacetime structure and Lorentz invariance, a misconception that in turn sheds more shadows than light on our understanding of the explanatory nature and power of Einstein's theory. I state that the arrow connecting Lorentz invariance and Minkowski spacetime is not explanatory and unidirectional, but analytic and bidirectional, and that this analytic arrow grounds the chronogeometric explanations of physical phenomena that special relativity offers.
Azerbaijan-Russia Borderline Security
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Ekaterina V. Arkhipova
2017-03-01
Full Text Available The Azerbaijan-Russia borderline mainly goes by the Caucasian mountain range and close to the Samur riverbed. Main border posts are situated close to the Caspian seashore while the locals living in the Upper Dagestan area have difficulties with crossing borderline. The locals are represented by the so called “divided peoples” whose living area was divided with the state border after 1991. The former inner borders ignored ethnic areas but now they became the lines crossing the ethnic groups of Legins, Avars, Tzakhurs and Rutuls. Certainly, those peoples are interested in specific rules for crossing the border. At the same time, their areas have not got the equipped border offices and they have to spend a lot of time and money for travelling to the neighboring districts via Baku or Vladikavkaz. Such problems arouse the radical demands among locals. The Lezgin movement for an independent Lezgistan is the most famous among them. Its supporters were involved in a terrorist attack in Baku in 1990-s and now they collect files about any problems connected with border issues, including the results of a demarcation process. They attract attention to the facts of all assignments made by Russian representatives. The activity of other ethnic groups was comparatively lower and they could make an agreement with local authorities about division of powers. Obviously, any solution about development of the border infrastructure may stabilize the separatism activity in the area. The author determines the key challenges and threats to cross-border security at Azerbaijan-Russia borderline on the basis of analysis of Federal and regional media, declarations made by representatives of the local and borderline authorities, as well as online activities of national movements. The author reveals the infrastructure factors of ensuring cross-border activity, social and economic conditions of borderline districts development. The suggestion is made on the need to develop
Constant scalar curvature hypersurfaces in (3 + 1) -dimensional GHMC Minkowski spacetimes
Smith, Graham
2018-06-01
We prove that every (3 + 1) -dimensional flat GHMC Minkowski spacetime which is not a translation spacetime or a Misner spacetime carries a unique foliation by spacelike hypersurfaces of constant scalar curvature. In other words, we prove that every such spacetime carries a unique time function with isochrones of constant scalar curvature. Furthermore, this time function is a smooth submersion.
Hyperbolic statics in space-time
Pavlov, Dmitry; Kokarev, Sergey
2014-01-01
Based on the concept of material event as an elementary material source that is concentrated on metric sphere of zero radius --- light-cone of Minkowski space-time, we deduce the analog of Coulomb's law for hyperbolic space-time field universally acting between the events of space-time. Collective field that enables interaction of world lines of a pair of particles at rest contains a standard 3-dimensional Coulomb's part and logarithmic addendum. We've found that the Coulomb's part depends on...
Quantum groups and quantum homogeneous spaces
International Nuclear Information System (INIS)
Kulish, P.P.
1994-01-01
The usefulness of the R-matrix formalism and the reflection equations is demonstrated on examples of the quantum group covariant algebras (quantum homogeneous spaces): quantum Minkowski space-time, quantum sphere and super-sphere. The irreducible representations of some covariant algebras are constructed. The generalization of the reflection equation to super case is given and the existence of the quasiclassical limits is pointed out. (orig.)
Neurochemical alterations associated with borderline personality disorder.
Atmaca, Murad; Karakoc, Tevfik; Mermi, Osman; Gurkan Gurok, M; Yildirim, Hanefi
2015-01-01
In neuroimaging on borderline personality disorder, prior studies focused on the hippocampus and amygdala, as mentioned above. However, no study investigated whether there were neurochemical changes in the patients with borderline personality disorder. Therefore, in the present study, we aimed to investigate neurochemical change of patients diagnosed with borderline disorder and hypothesized that neurochemicals would change in the hippocampus region of these patients. Seventeen patients and the same number of healthy control subjects were analyzed by using a 1.5 Tesla GE Signa Imaging System. N-acetylaspartate (NAA), choline compounds (CHO), and creatine (CRE) values of hippocampal region were measured. The mean NAA/CRE ratio in the hippocampus region was significantly reduced in the patients with borderline personality disorder compared to that of healthy control subjects, In addition, NAA/CHO ratio of the patients with borderline personality disorder was also significantly reduced when compared to that of healthy subjects. There was no difference in the ratio of CHO/CRE. In summary, we present evidence for reduced NAA in the patients with borderline personality disorder. © 2015, The Author(s).
Developmental aspects of borderline personality disorder.
Reich, D B; Zanarini, M C
2001-01-01
This study examined whether patients with borderline personality disorder and controls with other personality disorders remember their childhoods differently with respect to separation difficulties, evocative memory, temperamental factors such as frustration tolerance and mood reactivity, and onset of symptoms. Two hundred and ninety patients with borderline personality disorder and 72 with other personality disorders were assessed using an instrument to rate memories of separation difficulties, temperamental problems, and onset of symptoms before age 18. Patients with borderline personality disorder remembered more difficulties with separation between ages 6 and 17 years, more mood reactivity and poorer frustration tolerance between ages 6 and 17, and the onset of more symptoms (most prominently sadness, depression, anxiety, and suicidality) before age 18 than did patients with other personality disorders. The groups did not differ in reports of evocative memory before age 18. These results indicate that many of the features of adult patients with borderline personality disorder may initially appear during childhood and adolescence and that these features may be used to differentiate borderline from other personality disorders.
A (star)-BASED MINKOWSKI'S INEQUALITY FOR SUGENO FRACTIONAL INTEGRAL OF ORDER alpha > 0
Czech Academy of Sciences Publication Activity Database
Babkhani, A.; Agahi, H.; Mesiar, Radko
2015-01-01
Roč. 18, č. 4 (2015), s. 862-874 ISSN 1311-0454 Institutional support: RVO:67985556 Keywords : fuzzy integral * Sugeno fractional integral * Minkowski's inequality Subject RIV: BA - General Mathematics Impact factor: 2.246, year: 2015 http://library.utia.cas.cz/separaty/2015/E/mesiar-0446629.pdf
Spontaneous compactification of space in an Einstein-Yang-Mills-Higgs model
International Nuclear Information System (INIS)
Cremmer, E.; Scherk, J.
1976-01-01
It is shown that classical solutions of an Einstein-Yang-Mills-Higgs system exist such that space-time is the direct product of the Minkowski space by a compact internal space of constant curvature. The symmetry group of the internal space determines the masses in such a way that singlets have the lowest energy, non-singlet states having huge masses. (Auth.)
Optimized Ultrawideband and Uniplanar Minkowski Fractal Branch Line Coupler
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Mohammad Jahanbakht
2012-01-01
Full Text Available The non-Euclidean Minkowski fractal geometry is used in design, optimization, and fabrication of an ultrawideband (UWB branch line coupler. Self-similarities of the fractal geometries make them act like an infinite length in a finite area. This property creates a smaller design with broader bandwidth. The designed 3 dB microstrip coupler has a single layer and uniplanar platform with quite easy fabrication process. This optimized 180° coupler also shows a perfect isolation and insertion loss over the UWB frequency range of 3.1–10.6 GHz.
Affective disorders among patients with borderline personality disorder.
Sjåstad, Hege Nordem; Gråwe, Rolf W; Egeland, Jens
2012-01-01
The high co-occurrence between borderline personality disorder and affective disorders has led many to believe that borderline personality disorder should be considered as part of an affective spectrum. The aim of the present study was to examine whether the prevalence of affective disorders are higher for patients with borderline personality disorder than for patients with other personality disorders. In a national cross-sectional study of patients receiving mental health treatment in Norway (N = 36 773), we determined whether psychiatric outpatients with borderline personality disorder (N = 1 043) had a higher prevalence of affective disorder in general, and whether they had an increased prevalence of depression, bipolar disorder or dysthymia specifically. They were compared to patients with paranoid, schizoid, dissocial, histrionic, obsessive-compulsive, avoidant, dependent, or unspecified personality disorder, as well as an aggregated group of patients with personality disorders other than the borderline type (N = 2 636). Odds ratios were computed for the borderline personality disorder group comparing it to the mixed sample of other personality disorders. Diagnostic assessments were conducted in routine clinical practice. More subjects with borderline personality disorder suffered from unipolar than bipolar disorders. Nevertheless, borderline personality disorder had a lower rate of depression and dysthymia than several other personality disorder groups, whereas the rate of bipolar disorder tended to be higher. Odds ratios showed 34% lower risk for unipolar depression, 70% lower risk for dysthymia and 66% higher risk for bipolar disorder in patients with borderline personality disorder compared to the aggregated group of other personality disorders. The results suggest that borderline personality disorder has a stronger association with affective disorders in the bipolar spectrum than disorders in the unipolar spectrum. This association may reflect
Affective disorders among patients with borderline personality disorder.
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Hege Nordem Sjåstad
Full Text Available BACKGROUND: The high co-occurrence between borderline personality disorder and affective disorders has led many to believe that borderline personality disorder should be considered as part of an affective spectrum. The aim of the present study was to examine whether the prevalence of affective disorders are higher for patients with borderline personality disorder than for patients with other personality disorders. METHODS: In a national cross-sectional study of patients receiving mental health treatment in Norway (N = 36 773, we determined whether psychiatric outpatients with borderline personality disorder (N = 1 043 had a higher prevalence of affective disorder in general, and whether they had an increased prevalence of depression, bipolar disorder or dysthymia specifically. They were compared to patients with paranoid, schizoid, dissocial, histrionic, obsessive-compulsive, avoidant, dependent, or unspecified personality disorder, as well as an aggregated group of patients with personality disorders other than the borderline type (N = 2 636. Odds ratios were computed for the borderline personality disorder group comparing it to the mixed sample of other personality disorders. Diagnostic assessments were conducted in routine clinical practice. RESULTS: More subjects with borderline personality disorder suffered from unipolar than bipolar disorders. Nevertheless, borderline personality disorder had a lower rate of depression and dysthymia than several other personality disorder groups, whereas the rate of bipolar disorder tended to be higher. Odds ratios showed 34% lower risk for unipolar depression, 70% lower risk for dysthymia and 66% higher risk for bipolar disorder in patients with borderline personality disorder compared to the aggregated group of other personality disorders. CONCLUSIONS: The results suggest that borderline personality disorder has a stronger association with affective disorders in the bipolar spectrum than
Affective Disorders among Patients with Borderline Personality Disorder
Sjåstad, Hege Nordem; Gråwe, Rolf W.; Egeland, Jens
2012-01-01
Background The high co-occurrence between borderline personality disorder and affective disorders has led many to believe that borderline personality disorder should be considered as part of an affective spectrum. The aim of the present study was to examine whether the prevalence of affective disorders are higher for patients with borderline personality disorder than for patients with other personality disorders. Methods In a national cross-sectional study of patients receiving mental health treatment in Norway (N = 36 773), we determined whether psychiatric outpatients with borderline personality disorder (N = 1 043) had a higher prevalence of affective disorder in general, and whether they had an increased prevalence of depression, bipolar disorder or dysthymia specifically. They were compared to patients with paranoid, schizoid, dissocial, histrionic, obsessive-compulsive, avoidant, dependent, or unspecified personality disorder, as well as an aggregated group of patients with personality disorders other than the borderline type (N = 2 636). Odds ratios were computed for the borderline personality disorder group comparing it to the mixed sample of other personality disorders. Diagnostic assessments were conducted in routine clinical practice. Results More subjects with borderline personality disorder suffered from unipolar than bipolar disorders. Nevertheless, borderline personality disorder had a lower rate of depression and dysthymia than several other personality disorder groups, whereas the rate of bipolar disorder tended to be higher. Odds ratios showed 34% lower risk for unipolar depression, 70% lower risk for dysthymia and 66% higher risk for bipolar disorder in patients with borderline personality disorder compared to the aggregated group of other personality disorders. Conclusions The results suggest that borderline personality disorder has a stronger association with affective disorders in the bipolar spectrum than disorders in the unipolar
Borderline Personality and the Detection of Angry Faces.
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Johanna Hepp
Full Text Available Many studies have assessed emotion recognition in patients with Borderline Personality Disorder and considerable evidence has been accumulated on patients' ability to categorize emotions. In contrast, their ability to detect emotions has been investigated sparsely. The only two studies that assessed emotion detection abilities found contradictory evidence on patients' ability to detect angry faces.To clarify whether patients with Borderline Personality Disorder show enhanced detection of angry faces, we conducted three experiments: a laboratory study (n = 53 with a clinical sample and two highly powered web studies that measured Borderline features (n1 = 342, n2 = 220. Participants in all studies completed a visual search paradigm, and the reaction times for the detection of angry vs. happy faces were measured.Consistently, data spoke against enhanced detection of angry faces in the Borderline groups, indicated by non-significant group (Borderline vs. healthy control × target (angry vs. happy interactions, despite highly satisfactory statistical power to detect even small effects.In contrast to emotion categorization, emotion detection appears to be intact in patients with Borderline Personality Disorder and individuals high in Borderline features. The importance of distinguishing between these two processes in future studies is discussed.
Quantum fields in curved space
International Nuclear Information System (INIS)
Birrell, N.D.; Davies, P.C.W.
1982-01-01
The book presents a comprehensive review of the subject of gravitational effects in quantum field theory. Quantum field theory in Minkowski space, quantum field theory in curved spacetime, flat spacetime examples, curved spacetime examples, stress-tensor renormalization, applications of renormalization techniques, quantum black holes and interacting fields are all discussed in detail. (U.K.)
The prevalence of borderline personality symptoms in adolescents.
Mohammadi, Mohammad Reza; Shamohammadi, Morteza; Salmanian, Maryam
2014-07-01
This study aimed to assess the prevalence of borderline personality symptoms in 16-18 year old adolescents. In this cross sectional - descriptive study, 422 high school students (211 boys, 211 girls) aged 16-18 were selected by cluster random sampling and simple random sampling in 2011-2012. The participants were assessed using the revised diagnostic interview for borderline questionnaire (DIB-R) and demographic questionnaire. Data were analyzed using Pearson correlation coefficient and Spearman correlation coefficient. Of the participants, 0/9% (0/22 % of the 16 year olds, 0.45 % of the 17 year olds and 0/22% of the 18 year olds) were diagnosed with borderline personality symptoms. Also, the prevalence of borderline personality symptoms in boys was 0/45 % of the total sample and it was 0/45 % of the total sample in girls. With respect to the relationship between demographic variables (age, sex, location, parents' occupation, parents' kinship, parents' education and birth order) and borderline personality symptoms, only parents' kinship showed a weak correlation with borderline personality symptoms. In the view of the prevalence of 0.9% of the borderline personality symptoms in adolescents, attention should be paid to the diagnosis and treatment of this disorder. Furthermore, works need to be done to improve the mental health and quality of life of adolescents.
Green functions in Bianci-type spaces
International Nuclear Information System (INIS)
Bukhbinder, I.L.; Kirillova, E.N.
1988-01-01
The theory of free scalar field with conformal connection in distorted space - time with Bianci 1 type metrics is considered. The presentation of the Green functions G-tilde approximately in in in the form of integral from the Schwinger - De Witt kernel over the contour in the plane of complex values of eigentime is obtained. The way, in which the transfer from the Green function in space with Euclidean signature to the Green functions in space with Minkowski signature and vice versa is realized, has been shown
On Minkowski decomposition of Okounkov bodies on a Del Pezzo surface
Directory of Open Access Journals (Sweden)
Patrycja Łuszcz-Świdecka
2011-03-01
Full Text Available We show that on a blow up of $P^2$ in $3$ general points there exists a finite set of nef divisors $P_1,ldots,P_s$ such that the Okounkov body $Delta(D$ of an arbitrary effective $R$--divisor $D$ on $X$ is the Minkowski sum Delta(D=sum_{i=1}^s a_iDelta(P_i (1 with non-negative coefficients $a_i in R_{geq 0}$.
International Nuclear Information System (INIS)
Ramos, Tomas; Rubilar, Guillermo F.; Obukhov, Yuri N.
2011-01-01
Highlights: → The definition of the momentum of light inside matter is studied. → Fully relativistic analysis of the dielectric 'Einstein box' thought experiment. → Minkowski, Abraham and the total energy-momentum tensors are derived in detail. → Some assumptions hidden in the usual Einstein box argument are identified. → The Abraham momentum is not uniquely selected as the momentum of light in this case. - Abstract: We analyse the 'Einstein box' thought experiment and the definition of the momentum of light inside matter. We stress the importance of the total energy-momentum tensor of the closed system (electromagnetic field plus material medium) and derive in detail the relativistic expressions for the Abraham and Minkowski momenta, together with the corresponding balance equations for an isotropic and homogeneous medium. We identify some assumptions hidden in the Einstein box argument, which make it weaker than it is usually recognized. In particular, we show that the Abraham momentum is not uniquely selected as the momentum of light in this case.
The prevalence of borderline personality symptoms in adolescents.
Directory of Open Access Journals (Sweden)
Mohammad Reza Mohammadi
2014-09-01
Full Text Available This study aimed to assess the prevalence of borderline personality symptoms in 16-18 year old adolescents.In this cross sectional - descriptive study, 422 high school students (211 boys, 211 girls aged 16-18 were selected by cluster random sampling and simple random sampling in 2011-2012. The participants were assessed using the revised diagnostic interview for borderline questionnaire (DIB-R and demographic questionnaire. Data were analyzed using Pearson correlation coefficient and Spearman correlation coefficient.Of the participants, 0/9% (0/22 % of the 16 year olds, 0.45 % of the 17 year olds and 0/22% of the 18 year olds were diagnosed with borderline personality symptoms. Also, the prevalence of borderline personality symptoms in boys was 0/45 % of the total sample and it was 0/45 % of the total sample in girls. With respect to the relationship between demographic variables (age, sex, location, parents' occupation, parents' kinship, parents' education and birth order and borderline personality symptoms, only parents' kinship showed a weak correlation with borderline personality symptoms.In the view of the prevalence of 0.9% of the borderline personality symptoms in adolescents, attention should be paid to the diagnosis and treatment of this disorder. Furthermore, works need to be done to improve the mental health and quality of life of adolescents.
Negative norm states in de Sitter space and QFT without renormalization procedure
International Nuclear Information System (INIS)
Takook, M.V.
2002-01-01
In recent papers, 1,2 it has been shown that the presence of negative norm states or negative frequency solutions are indispensable for a fully covariant quantization of the minimally coupled scalar field in de Sitter space. Their presence, while leaving unchanged the physical content of the theory, offers the advantage of eliminating any ultraviolet divergence in the vacuum energy 2 and infrared divergence in the two point function. 3 We attempt here to extend this method to the interacting quantum field in Minkowski space-time. As an illustration of the procedure, we consider the λϕ 4 theory in Minkowski space-time. The mathematical consequences of this method is the disappearance of the ultraviolet divergence to the one-loop approximation. This means, the effect of these auxiliary negative norm states is to allow an automatic renormalization of the theory in this approximation. (author)
Spinorial relativistic rotator: the transformation from quasi-Newtonian to Minkowski coordinates
International Nuclear Information System (INIS)
Biedenharn, L.C.; Bohm, A.; Tarlini, M.; van Dam, H.; Mukunda, N.
1983-12-01
There exists a remarkably close relationship between the operator algebra of the Dirac equation and the corresponding operators of the spinorial relativistic rotator (an indecomposable object lying on a mass-spin Regge trajectory). The analog of the Foldy-Wouthuysen transformation (more generally, the transformation between quasi-Newtonian and Minkowski coordinates) is constructed and explicit results are discussed for the spin and position operators. Zitterbewegung is shown to exist for a system having only positive energies. 31 references
Minkowski vacuum transitions in (nongeometric) flux compactifications
International Nuclear Information System (INIS)
Herrera-Suarez, Wilberth; Loaiza-Brito, Oscar
2010-01-01
In this work we study the generalization of twisted homology to geometric and nongeometric backgrounds. In the process, we describe the necessary conditions to wrap a network of D-branes on twisted cycles. If the cycle is localized in time, we show how by an instantonic brane mediation, some D-branes transform into fluxes on different backgrounds, including nongeometric fluxes. As a consequence, we show that in the case of a IIB six-dimensional torus compactification on a simple orientifold, the flux superpotential is not invariant by this brane-flux transition, allowing the connection among different Minkowski vacuum solutions. For the case in which nongeometric fluxes are turned on, we also discuss some topological restrictions for the transition to occur. In this context, we show that there are some vacuum solutions protected to change by a brane-flux transition.
Hormone therapy and ovarian borderline tumors
DEFF Research Database (Denmark)
Mørch, Lina Steinrud; Løkkegaard, Ellen; Andreasen, Anne Helms
2012-01-01
Little is known about the influence of postmenopausal hormone therapy on the risk of ovarian borderline tumors. We aimed at assessing the influence of different hormone therapies on this risk.......Little is known about the influence of postmenopausal hormone therapy on the risk of ovarian borderline tumors. We aimed at assessing the influence of different hormone therapies on this risk....
Parental qualities as perceived by borderline personality disorders.
Goldberg, R L; Mann, L S; Wise, T N; Segall, E A
1985-01-01
This study explores the contribution of parental qualities to the borderline personality disorder. The Parental Bonding Inventory is used to compare four parental qualities (caring mother, caring father, overprotective father, and overprotective mother) across three groups (borderline personality disorders, assorted psychiatric controls and normal controls). The major finding was that the borderline patients perceived their parents to be significantly less caring and more overprotective than both the psychiatric control or nonclinical control groups. This study was verified previous reports that patients diagnosed with an affective illness (in either the borderline group or psychiatric control group) reported no significant differences on the inventory. Pinpointing parental characteristics which antecede mental disorders may be an important first step in devising primary preventive interventions for adult disorders.
Substance abuse in borderline personality disorder: clinical and etiological correlates
van den Bosch, L. M.; Verheul, R.; van den Brink, W.
2001-01-01
This work examines differences between female borderline patients with and without substance abuse problems and between borderline patients from different treatment settings. A total of 64 female borderline patients were recruited from mental health services (n = 34) and addiction treatment services
Clinical status of comorbid bipolar disorder and borderline personality disorder.
Parker, Gordon; Bayes, Adam; McClure, Georgia; Del Moral, Yolanda Romàn Ruiz; Stevenson, Janine
2016-09-01
The status and differentiation of comorbid borderline personality disorder and bipolar disorder is worthy of clarification. To determine whether comorbid borderline personality disorder and bipolar disorder are interdependent or independent conditions. We interviewed patients diagnosed with either a borderline personality disorder and/or a bipolar condition. Analyses of participants grouped by DSM diagnoses established that those with comorbid conditions scored similarly to those with a borderline personality disorder alone on all key variables (i.e. gender, severity of borderline personality scores, developmental stressors, illness correlates, self-injurious behaviour rates) and differed from those with a bipolar disorder alone on nearly all non-bipolar item variables. Similar findings were returned for groups defined by clinical diagnoses. Comorbid bipolar disorder and borderline personality disorder is consistent with the formal definition of comorbidity in that, while coterminous, individuals meeting such criteria have features of two independent conditions. © The Royal College of Psychiatrists 2016.
Borderline Personality Disorder
... of a mood disorder—not borderline personality disorder Self-harming behavior, such as cutting Recurring thoughts of suicidal ... symptoms and reduce the number of suicidal or self-harming behaviors. Read more on NIMH’s Psychotherapies health topic ...
Borderline lepromatous leprosy with neurofibromatosis
Directory of Open Access Journals (Sweden)
Angoori Gnaneshwar
2010-01-01
Full Text Available The coexistence of leprosy with neurofibromatosis is rare both the diseases present with nerve thickening and skin lesions (patches and nodules. The coexistence of neurofibroma with borderline tuberculoid, lepromatous, histoid, and neuritic leprosy has been reported in the past. We report here a case of borderline lepromatous leprosy coexisting with neurofibromatosis in a 60 year-old male, who presented with neurofibromata and nerve thickening. Histopathology of skin biopsy from the leprosy and neurofibroma nodules confirmed the diagnosis of leprosy and neurofibroma.
Experiences of women living with borderline personality disorder
Directory of Open Access Journals (Sweden)
N. Ntshingila
2016-12-01
From the findings obtained by means of the interviews of women living with borderline personality disorder, it was evident that there were childhood experiences of living in an unsafe space, related to unhealthy family dynamics, boundary violations and educational challenges. They experienced chronic feelings of emptiness in their relationships with the self. They also presented with a pattern of unstable interpersonal relationships and compromised mental health, which was apparent through the early onset of mental problems, emotional upheaval, looking for emotional escape and having different trigger factors. Lastly, all these women yearned for facilitated mental health.
Role of biological factors in etiopathogenesis of borderline personality disorder
Directory of Open Access Journals (Sweden)
Jolanta Rabe-Jabłońska
2012-09-01
Full Text Available Emotionally labile personality of borderline type (borderline personality occurs in 1-2% of individuals from general population; 75% of this group are women. Similarly to most of the other mental disorders, the borderline personality results from a combination of biological, social and psychological factors. The subject of this study is a survey of the current knowledge on biological factors of borderline personality. Most researchers are of the opinion that these personality disorders are determined genetically, with such inherited temperamental traits as: dysregulation, impulsivity, and hypersensitivity. Perhaps hereditary is also a defect within the serotonergic system, endogenous opioid system and/or dopaminergic system related to the reward system. Many researchers have recently perceived the dysfunction of endogenous opioid system as an integral component of borderline personality. There is now a lot of evidence showing that this dysfunction as well as that of the reward system may account for most of the borderline personality symptoms which constitute an involuntary attempt of stimulating the inefficient systems. This is how e.g. the presence of reckless sexual behaviours, unstable interpersonal relationships and inability to delay the reward in borderline personality is accounted for. Such observations may in the future constitute an important indication for seeking a more effective pharmacotherapy for patients with borderline personality. It is possible that in some patients the described dysfunctions may be alleviated with time. This is implied by the results of comprehensive prospective studies which show a significant regression of symptoms and improvement in functioning of most patients with borderline personality after at least several years.
Wismüller, Axel; De, Titas; Lochmüller, Eva; Eckstein, Felix; Nagarajan, Mahesh B.
2017-01-01
The ability of Minkowski Functionals to characterize local structure in different biological tissue types has been demonstrated in a variety of medical image processing tasks. We introduce anisotropic Minkowski Functionals (AMFs) as a novel variant that captures the inherent anisotropy of the underlying gray-level structures. To quantify the anisotropy characterized by our approach, we further introduce a method to compute a quantitative measure motivated by a technique utilized in MR diffusion tensor imaging, namely fractional anisotropy. We showcase the applicability of our method in the research context of characterizing the local structure properties of trabecular bone micro-architecture in the proximal femur as visualized on multi-detector CT. To this end, AMFs were computed locally for each pixel of ROIs extracted from the head, neck and trochanter regions. Fractional anisotropy was then used to quantify the local anisotropy of the trabecular structures found in these ROIs and to compare its distribution in different anatomical regions. Our results suggest a significantly greater concentration of anisotropic trabecular structures in the head and neck regions when compared to the trochanter region (p < 10−4). We also evaluated the ability of such AMFs to predict bone strength in the femoral head of proximal femur specimens obtained from 50 donors. Our results suggest that such AMFs, when used in conjunction with multi-regression models, can outperform more conventional features such as BMD in predicting failure load. We conclude that such anisotropic Minkowski Functionals can capture valuable information regarding directional attributes of local structure, which may be useful in a wide scope of biomedical imaging applications. PMID:29170580
Co-occurrence of dissociative identity disorder and borderline personality disorder.
Ross, Colin A; Ferrell, Lynn; Schroeder, Elizabeth
2014-01-01
The literature indicates that, among individuals with borderline personality disorder, pathological dissociation correlates with a wide range of impairments and difficulties in psychological function. It also predicts a poorer response to dialectical behavior therapy for borderline personality disorder. We hypothesized that (a) dissociative identity disorder commonly co-occurs with borderline personality disorder and vice versa, and (b) individuals who meet criteria for both disorders have more comorbidity and trauma than individuals who meet criteria for only 1 disorder. We interviewed a sample of inpatients in a hospital trauma program using 3 measures of dissociation. The most symptomatic group was those participants who met criteria for both borderline personality disorder and dissociative identity disorder on the Dissociative Disorders Interview Schedule, followed by those who met criteria for dissociative identity disorder only, then those with borderline personality disorder only, and finally those with neither disorder. Greater attention should be paid to the relationship between borderline personality disorder and dissociative identity disorder.
Treatment of borderline personality disorder and co-occurring anxiety disorders
Valenstein, Helen R.
2013-01-01
Anxiety disorders are highly prevalent among individuals with borderline personality disorder, with comorbidity rates of up to 90%. Anxiety disorders have been found to reduce the likelihood of achieving remission from borderline personality disorder over time and to increase the risk of suicide and self-injury in this population. Evidence-based treatments for borderline personality disorder have not sufficiently focused on targeting anxiety disorders, and their effects on these disorders are either limited or unknown. Conversely, evidence-based treatments for anxiety disorders typically exclude suicidal, self-injuring, and seriously comorbid patients, thereby limiting their generalizability to individuals with borderline personality disorder. To address these limitations, recent research has begun to emerge focused on developing and evaluating treatments for individuals with co-occurring borderline personality disorder and anxiety disorders, specifically posttraumatic stress disorder (PTSD), with promising initial results. However, there is a need for additional research in this area, particularly studies evaluating the treatment of anxiety disorders among high-risk and complex borderline personality disorder patients. PMID:23710329
Is physical space unique or optional
International Nuclear Information System (INIS)
Ekstein, H.; Centre National de la Recherche Scientifique, 13 - Marseille
1975-02-01
There are two concepts of the physical space-time. One, S(F), is that of a fixed arena in which events take place. The other S(D), is that of a space-time shaped by events. The second depends on the state (initial conditions) or on the external field, the first does not. The main assertions of the present paper are: 1) the fixed space-time S(F) is neither incompatibles with nor made superfluous, by Einstein's theory. S(F) is experimentally explorable, unique, and probably identical with Minkowski space M. 2) The dynamical space S(D) is largely optional. It can be chosen to be M, but the natural choice is Einstein's pseudo-Riemanian manifold [fr
A flat space-time relativistic explanation for the perihelion advance of Mercury
Behera, Harihar; Naik, P. C.
2003-01-01
Starting with the flat space-time relativistic versions of Maxwell-Heaviside's toy model vector theory of gravity and introducing the gravitational analogues for the electromagnetic Lienard-Wiechert potentials together with the notion of a gravitational Thomas Precession; the observed anomalous perihelion advance of Mercury's orbit is here explained as a relativistic effect in flat (Minkowski) space-time, unlike Einstein's curved space-time relativistic explanation. In this new explanation fo...
Characterizing somatization, hypochondriasis, and hysteria in the borderline personality disorder.
Snyder, S; Pitts, W M
1986-03-01
Somatization, hypochondriasis, and hysteria have often been considered as associated features of the borderline personality disorder. This study was designed to characterize these three syndromes in the borderline patient. Inpatients with DSM-III borderline personality disorder were compared with controls with dysthymic disorder. Scales and items from standardized rating instruments which measured the three syndromes were scored and compared between groups. Although the hysteria-obvious and hypochondriasis scales of the MMPI and the Hamilton Depression Scale item measuring hypochondriasis were elevated in the borderline group, there were no significant differences between groups. Scores of dysthymic patients significantly exceeded those of borderline patients on four of five MMPI codetypes measuring the three syndromes. Findings are discussed in light of previous psychodynamic, empirical, and research literature.
Capaciteitsproblemen grote belemmering: de behandeling van borderline persoonlijkheidsstoornis
Hermens, M.; van Splunteren, P.; van den Bosch, A.; Verheul, R.
2012-01-01
Barriers to implementing the clinical guideline on borderline personality disorder in the Netherlands. Objective: This study determined the gap between actual care and optimal care (recommended in the clinical guideline) for patients with borderline personality disorder in the Netherlands. Factors
Complexified de Sitter space: Analytic causal kernels and Kaellen-Lehmann-type representation
International Nuclear Information System (INIS)
Bros, J.
1991-01-01
Global analyticity properties of functions associated with causal kernels on de Sitter space are considered. These properties extend in a reasonable way those implied by the general framework of quantum field theory in complex Minkowski space. Mathematical results of J. Faraut, G.A. Viano and J. Bros (motivated in particular by complex angular momentum analysis in field theory) find here new applications. (orig.)
International Nuclear Information System (INIS)
Kostadinov, S.I.; Petrov, G.
1992-01-01
From a special class of systems has been used a Schroedinger equation with impulse effect in Minkowski space field theory with time dependent boundary conditions, i.e. those of moving mirrors. The field theoretical approach for studying the properties of the vacuum starts from an analysis of the behaviour of local field quantities in Minkowski space with uniformly moving mirrors. For the impulsive moving mirror model is the real process of interaction between the quantum field and the external mirror a subject to disturbances in its evolution acting in time very short compared with the entire duration of the process. So the stability of the solution of the Schroedinger evolution equation for the process in the stability of the vacuum of Casimir. 8 refs
Gratz, Kim L; Tull, Matthew T; Reynolds, Elizabeth K; Bagge, Courtney L; Latzman, Robert D; Daughters, Stacey B; Lejuez, C W
2009-01-01
Although research has been conducted on the course, consequences, and correlates of borderline personality disorder (BPD), little is known about its emergence in childhood, and no studies have examined the extent to which theoretical models of the pathogenesis of BPD in adults are applicable to the correlates of borderline personality symptoms in children. The goal of this study was to examine the interrelationships between two BPD-relevant personality traits (affective dysfunction and disinhibition), self- and emotion-regulation deficits, and childhood borderline personality symptoms among 263 children aged 9 to 13. We predicted that affective dysfunction, disinhibition, and their interaction would be associated with childhood borderline personality symptoms, and that self- and emotion-regulation deficits would mediate these relationships. Results provided support for the roles of both affective dysfunction and disinhibition (in the form of sensation seeking) in childhood borderline personality symptoms, as well as their hypothesized interaction. Further, both self- and emotion-regulation deficits partially mediated the relationship between affective dysfunction and childhood borderline personality symptoms. Finally, results provided evidence of different gender-based pathways to childhood borderline personality symptoms, suggesting that models of BPD among adults are more relevant to understanding the factors associated with borderline personality symptoms among girls than boys.
Borderline personality symptoms and work performance: a population-based survey.
Juurlink, Trees T; Ten Have, Margreet; Lamers, Femke; van Marle, Hein J F; Anema, Johannes R; de Graaf, Ron; Beekman, Aartjan T F
2018-06-19
This study aims to elucidate the interplay between borderline personality symptoms and working conditions as a pathway for impaired work performance among workers in the general population. Cross-sectional data from the Netherlands Mental Health Survey and Incidence Study-2 (NEMESIS-2) were used, including 3672 workers. Borderline personality symptoms were measured with the International Personality Disorder Examination (IPDE) questionnaire. Working conditions (decision latitude, psychological job demands, job security and co-worker support) were assessed with the Job Content Questionnaire (JCQ). Impaired work performance was assessed as total work loss days per month, defined as the sum of days of three types of impaired work performance (inability to work, cut-down to work, and diminished quality at work). These were assessed with the WHO Disability Assessment Schedule (WHO-DAS). Common mental disorders (CMD) were assessed with the Composite International Diagnostic Interview (CIDI). Number of borderline personality symptoms was consistently associated with impaired work performance, even after controlling for type or number of adverse working conditions and co-occurrence of CMD. Borderline personality symptoms were associated with low decision latitude, job insecurity and low co-worker support. The relationship between borderline personality symptoms and work performance diminished slightly after controlling for type or number of working conditions. The current study shows that having borderline personality symptoms is a unique determinant of work performance. This association seems partially explained through the impact of borderline personality symptoms on working conditions. Future studies are warranted to study causality and should aim at diminishing borderline personality symptoms and coping with working conditions.
Definition and Management of Borderline Resectable Pancreatic Cancer.
Denbo, Jason W; Fleming, Jason B
2016-12-01
Patients with localized pancreatic ductal adenocarcinoma seek potentially curative treatment, but this group represents a spectrum of disease. Patients with borderline resectable primary tumors are a unique subset whose successful therapy requires a care team with expertise in medical care, imaging, surgery, medical oncology, and radiation oncology. This team must identify patients with borderline tumors then carefully prescribe and execute a combined treatment strategy with the highest possibility of cure. This article addresses the issues of clinical evaluation, imaging techniques, and criteria, as well as multidisciplinary treatment of patients with borderline resectable pancreatic ductal adenocarcinoma. Copyright © 2016 Elsevier Inc. All rights reserved.
a Novel 3d Intelligent Fuzzy Algorithm Based on Minkowski-Clustering
Toori, S.; Esmaeily, A.
2017-09-01
Assessing and monitoring the state of the earth surface is a key requirement for global change research. In this paper, we propose a new consensus fuzzy clustering algorithm that is based on the Minkowski distance. This research concentrates on Tehran's vegetation mass and its changes during 29 years using remote sensing technology. The main purpose of this research is to evaluate the changes in vegetation mass using a new process by combination of intelligent NDVI fuzzy clustering and Minkowski distance operation. The dataset includes the images of Landsat8 and Landsat TM, from 1989 to 2016. For each year three images of three continuous days were used to identify vegetation impact and recovery. The result was a 3D NDVI image, with one dimension for each day NDVI. The next step was the classification procedure which is a complicated process of categorizing pixels into a finite number of separate classes, based on their data values. If a pixel satisfies a certain set of standards, the pixel is allocated to the class that corresponds to those criteria. This method is less sensitive to noise and can integrate solutions from multiple samples of data or attributes for processing data in the processing industry. The result was a fuzzy one dimensional image. This image was also computed for the next 28 years. The classification was done in both specified urban and natural park areas of Tehran. Experiments showed that our method worked better in classifying image pixels in comparison with the standard classification methods.
Treating borderline personality disorder as a trainee psychologist ...
African Journals Online (AJOL)
Clients with borderline personality disorder are viewed as difficult to work with. They also have high drop-out rates and unpredictable treatment outcomes. The characteristics of patients with borderline personality disorder often have a negative effect on the therapeutic process and on clinicians themselves. Challenges are ...
Maternal empathy, family chaos, and the etiology of borderline personality disorder.
Golomb, A; Ludolph, P; Westen, D; Block, M J; Maurer, P; Wiss, F C
1994-01-01
Psychoanalytic writers have traced the etiology of borderline personality disorder (BPD) to be a preoedipal disturbance in the mother-child relationship. Despite the prevalence of theories focusing on the role of mothering in the development of BPD, few empirical studies have tested the hypothesis that borderlines were the recipients of unempathic mothering. The current preliminary study compared 13 mothers of borderline adolescents with 13 mothers of normal adolescents. This study found that mothers of borderlines tended to conceive of their children egocentrically, as need-gratifying objects, rather than as individuals with distinct and evolving personalities. This study also found that the mothers of borderlines reported raising their daughters in extremely chaotic families struggling to cope with multiple hardships, including divorce and financial worries. The stressful environmental circumstances reported by the mothers likely affected the borderline daughters directly as well as the mothers' ability to parent effectively and empathically. The results of this study suggest that, as predicted by psychoanalytic theory, a problematic mother-child relationship may play a significant role in the genesis of borderline pathology; however, the life circumstances that contextualize the mother-child relationship also need to be considered when accounting for the etiology of BPD.
International Nuclear Information System (INIS)
Hawking, S.W.; King, A.R.; McCarthy, P.J.
1976-01-01
A new topology is proposed for strongly causal space--times. Unlike the standard manifold topology (which merely characterizes continuity properties), the new topology determines the causal, differential, and conformal structures of space--time. The topology is more appealing, physical, and manageable than the topology previously proposed by Zeeman for Minkowski space. It thus seems that many calculations involving the above structures may be made purely topological
Some aspects of quantum field theory in non-Minkowskian space-times
International Nuclear Information System (INIS)
Toms, D.J.
1980-01-01
Several aspects of quantum field theory in space-times which are different from Minkowski space-time, either because of the presence of a non-zero curvature or as a consequence of the topology of the manifold, are discussed. The Casimir effect is a quantum field theory in a space-time which has a different topology. A short review of some of its popular derivations is presented with comments. Renormalization of interacting scalar field theories in a flat space-time with a non-Minkowskian topology is considered. The presence of a non-trivial topology can lead to additional non-local divergent terms in the Schwinger-Dyson equations for a general scalar field theory; however, the theory may be renormalized with the same choice of counterterms as in Minkowski space-time. Propagators can develop poles corresponding to the generation of a topological mass. Zeta-function regularization is shown to fit naturally into the functional approach to the effective potential. This formalism is used to calculate the effective potential for some scalar field theories in non-Minkowskian space-times. Topological mass generation is discussed, and it is shown how radiative corrections can lead to spontaneous symmetry breaking. One- and two-loop contributions to the vacuum energy density are obtained for both massless and massive fields. In the massive case the role of renormalization in removing non-local divergences is discussed
Experiences of women living with borderline personality disorder ...
African Journals Online (AJOL)
There is limited understanding of the experiences of women living with borderline personality disorder. It was therefore decided to discover how women living with this disorder would tell their life story. For the researcher, who worked in a psychotherapy ward where most women were living with borderline personality ...
Richman, Mara J; Unoka, Zsolt
2015-12-01
Patients with major depression and borderline personality disorder are characterised by a distorted perception of other people's intentions. Deficits in mental state decoding are thought to be the underlying cause of this clinical feature. To examine, using meta-analysis, whether mental state decoding abilities in patients with major depression and borderline personality disorder differ from those of healthy controls. A systematic review of 13 cross-sectional studies comparing Reading in the Mind of the Eyes Test (RMET) accuracy performance of patients with major depression or borderline personality disorder and healthy age-matched controls (n = 976). Valence scores, where reported, were also assessed. Large significant deficits were seen for global RMET performance in patients with major depression (d = -0.751). The positive RMET valence scores of patients with depression were significantly worse; patients with borderline personality disorder had worse neutral scores. Both groups were worse than controls. Moderator analysis revealed that individuals with comorbid borderline personality disorder and major depression did better than those with borderline personality disorder alone on accuracy. Those with comorbid borderline personality disorder and any cluster B or C personality disorder did worse than borderline personality disorder alone. Individuals with both borderline personality disorder and major depression performed better then those with borderline personality disorder without major depression for positive valence. These findings highlight the relevance of RMET performance in patients with borderline personality disorder and major depression, and the importance of considering comorbidity in future analysis. © The Royal College of Psychiatrists 2015.
The borderline conditions--an introduction from a Scandinavian perspective
DEFF Research Database (Denmark)
Simonsen, E
1994-01-01
disorder--impulsive or borderline subcategory. This closer demarcation of prototypes in the classification system may facilitate less confusion in future. All Scandinavian countries have contributed a great deal to the research in the field of borderline conditions, especially with regard to genetic...... and nosological issues. A brief summary of these contributions is presented. Some important notions in the phenomenologic and prototypically oriented European tradition of classifying personality disorders are explained in order to understand the rather ambiguous reaction to the borderline concept in European...
Accuracy of frozen section in borderline ovarian tumor
Directory of Open Access Journals (Sweden)
Maryam Dadzan
2015-01-01
Full Text Available Borderline ovarian tumor or low malignant ovarian tumor presents in 10-15% of all ovarian cancers, which usually affects younger women and have favorable prognosis even with conservative surgery, in which fertility can be preserved. Lack of reliable diagnostic tool to indicate the type of malignancy before or at the time of surgery makes the borderline ovarian tumor one of the most controversial topics in gynecology. This might lead to many overtreatment cases with radical surgery or undertreatment with conservative surgery with the higher rate of overtreatment compared to under treatment.In this review article, we extensively searched for all reported data regarding the accuracy of frozen section in borderline ovarian tumor. Reviewing the results of six studies, which specifically considered the accuracy of frozen section in borderline ovarian tumors, revealed an accuracy of 60% with an agreement between final pathology and frozen section results. Overall, 24.5% of under-diagnosed malignant cases interpreted to be benign and 4.9% overdiagnosed cases with benign tumor considered as a malignant. Frozen section is a reliable tool to exclude benign tumor from borderline and malignant but underdiagnosed percentage is higher. There are limitations in this review including the small number of enrolled cases, different time of diagnosis and different investigated countries and the discrepancies between the studied articles in this review.
Shame and implicit self-concept in women with borderline personality disorder.
Rüsch, Nicolas; Lieb, Klaus; Göttler, Ines; Hermann, Christiane; Schramm, Elisabeth; Richter, Harald; Jacob, Gitta A; Corrigan, Patrick W; Bohus, Martin
2007-03-01
Shame is considered to be a central emotion in borderline personality disorder and to be related to self-injurious behavior, chronic suicidality, and anger-hostility. However, its level and impact on people with borderline personality disorder are largely unknown. The authors examined levels of self-reported shame, guilt, anxiety, and implicit shame-related self-concept in women with borderline personality disorder and assessed the association of shame with self-esteem, quality of life, and anger-hostility. Sixty women with borderline personality disorder completed self-report measures of shame- and guilt-proneness, state shame, anxiety, depression, self-esteem, quality of life, and clinical symptoms. Comparison groups consisted of 30 women with social phobia and 60 healthy women. Implicit shame-related self-concept (relative to anxiety) was assessed by the Implicit Association Test. Women with borderline personality disorder reported higher levels of shame- and guilt-proneness, state shame, and anxiety than women with social phobia and healthy comparison subjects. The implicit self-concept in women with borderline personality disorder was more shame-prone (relative to anxiety-prone) than in women in the comparison groups. After depression was controlled for, shame-proneness was negatively correlated with self-esteem and quality of life and positively correlated with anger-hostility. Shame, an emotion that is prominent in women with borderline personality disorder, is associated with the implicit self-concept as well as with poorer quality of life and self-esteem and greater anger-hostility. Psychotherapeutic approaches to borderline personality disorder need to address explicit and implicit aspects of shame.
Höhner, Gesche; Teismann, Tobias; Willutzki, Ulrike
2014-02-01
Do women suffering from borderline symptomatology differ from women without these symptoms regarding their motives for body modifications?A sample of 289 women with body modifications were questioned about their tattoos, piercings and motives for body modifications as well as about symptoms of borderline personality disorder. Women with borderline symptomatology were compared to women without borderline symptomatology concerning the extent of and motives for body modification.The 2 groups showed no differences in regard to amount and extent of body modifications. The "borderline"-group considered individuality, coping and management of negative life-events to be more crucial reasons for body modification than the non-borderline females.The degree of a person's body modification is not a feasible indicator for psychopathological strain. Though, for people with borderline tendency body modification may serve as a coping strategy similar to self-injury. © Georg Thieme Verlag KG Stuttgart · New York.
The continuum between Bipolar Disorder and Borderline Personality Disorder.
Elisei, Sandro; Anastasi, Serena; Verdolini, Norma
2012-09-01
Several studies have been carried out regarding the possible overlap between Bipolar Disorder and borderline personality disorder. Up to now, it is not possible to provide a definitive picture. In fact, there is currently significant debate about the relationship between Borderline Personality Disorder and Bipolar Disorder. MEDLINE searches were performed to identify the latest studies of these disorders, considering psychodynamic aspects. Bipolar disorder and borderline personality disorder share common clinical features, namely affective instability and impulsivity which however differ in quality. Consequently, to better understand these aspects, it is necessary to trace the stages of childhood psychological development. It has been claimed that Bipolar Disorder Type II can be divided into two subtypes: one stable and functional between episodes and one unstable between episodes which is related to Borderline Personality Disorder. However, better diagnostic theories, psychiatrist's empathy and patience remain the essential tool to understand and to face human suffering.
Sex Bias in Classifying Borderline and Narcissistic Personality Disorder.
Braamhorst, Wouter; Lobbestael, Jill; Emons, Wilco H M; Arntz, Arnoud; Witteman, Cilia L M; Bekker, Marrie H J
2015-10-01
This study investigated sex bias in the classification of borderline and narcissistic personality disorders. A sample of psychologists in training for a post-master degree (N = 180) read brief case histories (male or female version) and made DSM classification. To differentiate sex bias due to sex stereotyping or to base rate variation, we used different case histories, respectively: (1) non-ambiguous case histories with enough criteria of either borderline or narcissistic personality disorder to meet the threshold for classification, and (2) an ambiguous case with subthreshold features of both borderline and narcissistic personality disorder. Results showed significant differences due to sex of the patient in the ambiguous condition. Thus, when the diagnosis is not straightforward, as in the case of mixed subthreshold features, sex bias is present and is influenced by base-rate variation. These findings emphasize the need for caution in classifying personality disorders, especially borderline or narcissistic traits.
Field theories on conformally related space-times: Some global considerations
International Nuclear Information System (INIS)
Candelas, P.; Dowker, J.S.
1979-01-01
The nature of the vacua appearing in the relation between the vacuum expectation value of stress tensors in conformally flat spaces is clarified. The simple but essential point is that the relevant spaces should have conformally related global Cauchy surfaces. Some commonly occurring conformally flat space-times are divided into two families according to whether they are conformally equivalent to Minkowski space or to the Rindler wedge. Expressions, some new, are obtained for the vacuum expectation value of the stress tensor for a number of illustrative cases. It is noted that thermalization relates the Green's functions of these two families
[Mentalization based treatment and borderline personality disorder].
De Oliveira, C; Rahioui, H; Smadja, M; Gorsane, M A; Louppe, F
2017-08-01
The borderline personality disorder is a complex psychiatric disorder that represents a high number of patients in a psychiatric adult service. Even if some therapies have shown to be effective in the therapeutic care of the borderline personality disorder they only target certain symptoms (e.g. anxiety, sadness, self-mutilation). The aim of this paper is to introduce a therapeutic model little known in France: the mentalization based therapy (MBT) developed in 2004 by Bateman and Fonagy. This therapeutic model apprehends the borderline personality disorder in all its complexity and is based on two main concepts: Bowlby's attachment theory and the concept of mentalization. The MBT is based on the hypothesis that a deficit of mentalization leads to the development of borderline disorder. The capacity of mentalization, also known as reflexive function, is acquired in infancy through interpersonal relationships, in particular those of attachment, and is the ability to understand the mental state (emotions, needs, thoughts, etc.) of oneself and others which underlies explicit behaviour. This reflexive capacity is of a better quality when the person has a secure attachment style. Indeed, borderline patients have, mainly, a deficit of mentalization capacity associated with an insecure attachment style. Thus, the main objective of the Bateman and Fonagy approach is to develop and reinforce the mentalization capacity through a therapeutic relationship as a secure base, a group therapy and the concept of insight. Classically, MBT is structured over a period of 18 months divided into 3 distinct phases distributed in two therapeutic axes: group and individual therapy. The initial phase aims to engage the patient in the therapy by evaluating attachment style, mentalization's ability, interpersonal functioning; providing psychoeducation about borderline disorder and establishing a therapeutic contract. To evaluate attachment style, the authors strongly recommend the use of the
Neurobiologien ved borderline-personlighedsforstyrrelse
DEFF Research Database (Denmark)
Simonsen, Erik; Andersen, Rune
2012-01-01
Borderline personality disorder (BPD) is a severe psychiatric disorder characterised by instability of affect regulation, impulse control, interpersonal relationships, and self-image. The aim of this status article is to provide a brief overview of the neurobiological underpinnings of the core...
Psychodrama and the Treatment of Narcissistic and Borderline Patients.
Olsson, Peter A
2018-01-01
Psychiatric clinicians are faced with the challenge of remaining flexible and psychotherapeutically relevant to the broadening scope of patients with severe narcissistic and borderline personality disorders. Diagnostic sophistication among mental health professionals, increased availability of psychotherapy services, and economic pressures combine to cause the public to expect cost-effective, successful, and shorter duration of treatments. These treatment challenges are particularly poignant with the treatment of those narcissistic and borderline patients who have meager capacity for insight and limited verbal skills. This article describes the use of psychodynamically oriented and informed psychodrama for the treatment of narcissistic and borderline patients.
Autobiographical Memory in Borderline Personality Disorder – A Review
DEFF Research Database (Denmark)
Beck, Morten; Elklit, Ask; Simonsen, Erik
2015-01-01
Borderline personality disorder is a severe psychiatric illness. A key feature of the disorder is a disorganized sense of self often referred to as identity diffusion. Autobiographical memory is memory for personal life events. One of the main functions of these memories is to enable us...... to understand who we are by connecting past, present and future experiences. It seems that autobiographical memory is in some way disrupted in individuals with borderline personality disorder. A systematic review is conducted looking at studies that focus on the potential connections. We find that although......, autobiographical memory and borderline personality disorder....
Geometría y física del espacio-tiempo de Minkowski
Xambó Descamps, Sebastián
2017-01-01
El propósito de este artículo es urdir una presentación elemental del espacio-tiempo (en el sentido de Minkowski) que subraye los aspectos geométricos y físicos fundamentales que concurren en su estructura. El lenguaje utilizado es el álgebra lineal y su extensión en el álgebra geométrica. Es el mé- todo que nos parece más idóneo para formular y manejar las transformaciones de Lorentz, la electrodinámica relativista y la teoría del electrón de Dirac. Peer Reviewed
ONTOLOGICAL STANDARDIZATION FOR HISTORICAL MAP COLLECTIONS: STUDYING THE GREEK BORDERLINES OF 1881
Directory of Open Access Journals (Sweden)
E. Gkadolou
2012-07-01
Full Text Available Historical maps deliver valuable historical information which is applicable in several domains while they document the spatiotemporal evolution of the geographical entities that are depicted therein. In order to use the historical cartographic information effectively, the maps' semantic documentation becomes a necessity for restoring any semantic ambiguities and structuring the relationship between historical and current geographical space. This paper examines cartographic ontologies as a proposed methodology and presents the first outcomes of the methodology applied for the historical map series «Carte de la nouvelle frontière Turco-Grecque» that sets the borderlines between Greece and Ottoman Empire in 1881. The map entities were modelled and compared to the current ones so as to record the changes in their spatial and thematic attributes and an ontology was developed in Protégé OWL Editor 3.4.4 for the attributes that thoroughly define a historical map and the digitised spatial entities. Special focus was given on the Greek borderline and the changes that it caused to other geographic entities.
Ontological Standardization for Historical Map Collections: Studying the Greek Borderlines of 1881
Gkadolou, E.; Tomai, E.; Stefanakis, E.; Kritikos, G.
2012-07-01
Historical maps deliver valuable historical information which is applicable in several domains while they document the spatiotemporal evolution of the geographical entities that are depicted therein. In order to use the historical cartographic information effectively, the maps' semantic documentation becomes a necessity for restoring any semantic ambiguities and structuring the relationship between historical and current geographical space. This paper examines cartographic ontologies as a proposed methodology and presents the first outcomes of the methodology applied for the historical map series «Carte de la nouvelle frontière Turco-Grecque» that sets the borderlines between Greece and Ottoman Empire in 1881. The map entities were modelled and compared to the current ones so as to record the changes in their spatial and thematic attributes and an ontology was developed in Protégé OWL Editor 3.4.4 for the attributes that thoroughly define a historical map and the digitised spatial entities. Special focus was given on the Greek borderline and the changes that it caused to other geographic entities.
Is research on borderline personality disorder underfunded by the National Institute of Health?
Zimmerman, Mark; Gazarian, Doug
2014-12-30
The relationship between bipolar disorder and borderline personality disorder has generated intense interest. Similar to patients with bipolar disorder, patients with borderline personality disorder are frequently hospitalized, are chronically unemployed, abuse substances, attempt and commit suicide. However, one significant difference between the two disorders is that patients with borderline personality disorder are often viewed negatively by mental health professionals. In the present paper we examined whether this negative bias against borderline personality disorder might be reflected in the level of research funding on the disorder. We searched the National Institute of Health (NIH) Research Portfolio Online Portfolio Reporting Tool (RePORT) for the past 25 years and compared the number of grants funded and the total amount of funding for borderline personality disorder and bipolar disorder. The yearly mean number of grants receiving funding was significantly higher for bipolar disorder than for borderline personality disorder. Results were the same when focusing on newly funded grants. For every year since 1990 more grants were funded for bipolar disorder than borderline personality disorder. Summed across all 25 years, the level of funding for bipolar disorder was more than 10 times greater than the level of funding for borderline personality disorder ($622 million vs. $55 million). These findings suggest that the level of NIH research funding for borderline personality disorder is not commensurate with the level of psychosocial morbidity, mortality, and health expenditures associated with the disorder.
Women’s Views on Their Diagnosis and Management for Borderline Gestational Diabetes Mellitus
Directory of Open Access Journals (Sweden)
Shanshan Han
2015-01-01
Full Text Available Introduction. Little is known about women’s views relating to a diagnosis of borderline gestational diabetes mellitus (GDM and the subsequent management. This study aimed to explore women’s experiences after being diagnosed with borderline GDM, their attitudes about treatment, and factors important to them for achieving any lifestyle changes. Methods. We conducted face-to-face, semistructured interviews with women diagnosed with borderline GDM. Results. A total of 22 women were interviewed. After a diagnosis of borderline GDM, 14 (64% women reported not being concerned or worried. Management of borderline GDM was thought by 21 (95% women to be very important or important. Eighteen (82% women planned to improve their diet and/or exercise to manage their borderline GDM. The most frequently mentioned enabler for achieving intended lifestyle change was being more motivated to improve the health of their baby and/or themselves (15 women. The most frequent barrier was tiredness and/or being physically unwell (11 women. Conclusions. A diagnosis of borderline GDM caused some concern to one-third of women interviewed. The majority of women believed managing their borderline GDM was important and they planned to improve their lifestyle. Women’s own and their babies’ future health were powerful motivators for lifestyle change.
[Emotional and impulsive dimensions in bipolar disorder and borderline personality disorder].
Leblanc, A; Jarroir, M; Vorspan, F; Bellivier, F; Leveillee, S; Romo, L
2017-05-01
Studies have shown that patients with borderline personality disorder are often misdiagnosed to have bipolar disorder and conversely. Indeed, a number of characteristics common to both disorders could explain this problem: emotional instability as well as impulsivity represent confounding factors and contribute to the risk of misdiagnosis. However, it appears that these characteristics manifest themselves in different ways according to the pathology. The aim of the study is to show differences between affective lability, emotional intensity and impulsivity dimensions. The clinical aim is to refine bipolar disorder and borderline personality disorder diagnosis, to improve psychological care for these patients in the long-term. We compared the emotional and impulsive dimensions in two groups of patients: a group of 21 patients with bipolar disorder and a group of 19 patients with borderline personality disorder. Tools: ALS, a self-report questionnaire to evaluate affective lability, AIM, a self-report questionnaire to see affective intensity, and UPPS, a self-report questionnaire to measure impulsivity according to several dimensions. The results indicate that borderline patients scored significantly higher than bipolar patients at the ALS and AIM scales. Regarding the UPPS, borderline patients scored significantly higher than bipolar patients for the dimensions "lack of premeditation" and "lack of perseverance"; however, bipolar patients had significantly higher scores than borderline patients for the dimension "negative emergency". This study shows that bipolar disorder and borderline personality can be differentiated thanks to emotional dimensions as well as different dimensions of impulsivity: borderline patients appear to have an affective lability and intensity more important than bipolar patients; it also appears that impulsivity manifests itself differently according to the disorder. Copyright © 2016 L'Encéphale, Paris. Published by Elsevier Masson SAS. All
Inflation from Minkowski space
International Nuclear Information System (INIS)
Pirtskhalava, David; Santoni, Luca; Trincherini, Enrico; Uttayarat, Patipan
2014-01-01
We propose a class of scalar models that, once coupled to gravity, lead to cosmologies that smoothly and stably connect an inflationary quasi-de Sitter universe to a low, or even zero-curvature, maximally symmetric spacetime in the asymptotic past, strongly violating the null energy condition ( H-dot ≫H"2) at intermediate times. The models are deformations of the conformal galileon lagrangian and are therefore based on symmetries, both exact and approximate, that ensure the quantum robustness of the whole picture. The resulting cosmological backgrounds can be viewed as regularized extensions of the galilean genesis scenario, or, equivalently, as ‘early-time-complete’ realizations of inflation. The late-time inflationary dynamics possesses phenomenologically interesting properties: it can produce a large tensor-to-scalar ratio within the regime of validity of the effective field theory and can lead to sizeable equilateral nongaussianities.
Quantum field theory in Schwarzschild and Rindler spaces
International Nuclear Information System (INIS)
Boulware, D.G.
1975-01-01
The problem of defining a scalar quantum field in the space-times described by the Schwarzschild and Rindler metrics is discussed. The matrix elements of the field operators are found by calculating the Green's functions for the fields. The requirement of positive frequencies for asymptotic timelike separations combined with a careful analysis of the continuity conditions at the event horizons yields a unique prescription for the Green's function. This in turn defines the vacuum state. In the Schwarzschild space the vacuum is shown to be stable and the lowest-energy state. In the Rindler space the quantization procedure yields the same results as quantization in Minkowski coordinates
Relationship between EDNOS and its subtypes and borderline personality disorder.
Marino, M F; Zanarini, M C
2001-04-01
The purpose of this study was to assess the prevalence of eating disorder not otherwise specified (EDNOS) and four well-defined subtypes of this disorder found in a sample of female borderline patients. The lifetime prevalence of EDNOS and its various subtypes among 233 female borderline patients and 46 female Axis II comparison subjects was assessed using the Structured Clinical Interview for DSM-III-R Axis I disorders. Thirty-three percent of female borderline patients met DSM-III-R criteria for EDNOS at some point in their lives. Of these 76 women, 20% reported a pattern of restricting without low weight, 37% reported a pattern of binging without purging, 37% reported a pattern of purging without binging, and 33% reported a pattern of low weight without loss of menses. However, less than 25% of these 76 borderline women had ever met criteria for anorexia nervosa or bulimia nervosa. The results of this study suggest that EDNOS is a separate cluster of eating disorders among borderline women, rather than a prodromal or residual form of a more clear-cut case of anorexia or bulimia nervosa. Copyright 2001 by John Wiley & Sons, Inc.
Four factors of impulsivity differentiate antisocial and borderline personality disorders.
DeShong, Hilary L; Kurtz, John E
2013-04-01
Impulsivity is a shared criterion for the diagnosis of antisocial and borderline personality disorders, and this link may account for the high comorbidity rates between the two disorders. The current study aimed to differentiate between borderline and antisocial personality disorders using the four factors of impulsivity identified by Whiteside and Lynam (2001). Five hundred thirty-six undergraduate participants completed the personality assessment inventory (PAI; Morey, 1991) to assess borderline and antisocial personality features and the NEO personality inventory, third edition (NEO-PI-3; McCrae & Costa, 2010) to assess the four factors of impulsivity. Results indicate that negative urgency and lack of perseverance were significantly and uniquely related to borderline features, while sensation seeking and lack of premeditation were significantly and uniquely related to antisocial features. The implications of these results for improved differential diagnosis are discussed.
Gallium-67 scintigraphy in borderline lepromatous leprosy
International Nuclear Information System (INIS)
Mouratidis, B.; Lomas, F.E.
1993-01-01
A middle aged woman with a pyrexia of unknown origin was shown to have borderline lepromatous leprosy. Early gallium-67 scintigraphy demonstrated increased uptake in the subcutaneous tissues of the face and thighs. As a result of these findings skin biopsy was obtained from the right thigh which gave a diagnosis of borderline lepromatous leprosy. The authors have been unable to find other reports of gallium-67 scintigraphy in leprosy but the pattern of gallium-67 distribution should suggest the diagnosis. 5 refs., 1 fig
Borderline personality disorder and polycystic ovary syndrome: A review of the literature.
Tan, Raelene Ym; Grigg, Jasmin; Kulkarni, Jayashri
2018-02-01
This review examines the existing evidence for the relationship between borderline personality disorder and polycystic ovary syndrome, and to identify commonalities in etiological mechanisms of borderline personality disorder and polycystic ovary syndrome that might explain the relationship between these seemingly disparate disorders. A search of Medline, EMBASE and Cochrane Central was undertaken on 5 December 2016 to identify studies investigating women with borderline personality disorder and polycystic ovary syndrome (or symptoms and markers specific to polycystic ovary syndrome). Nine studies were identified, including three cross-sectional studies investigating symptoms of polycystic ovary syndrome in women with borderline personality disorder, two cross-sectional and one cohort study examining the prevalence of psychiatric diagnoses in women with polycystic ovary syndrome and three case reports of comorbid borderline personality disorder and polycystic ovary syndrome. Overall, the literature shows women with borderline personality disorder to have higher than expected serum androgen levels and incidence of polycystic ovaries, which can be key features of polycystic ovary syndrome. However, this research is still in its infancy, which limits our understanding of this potential comorbid phenomenon. Given the emerging anecdotal and empirical evidence to date, a theoretical discussion of the potential psychoneuroendocrinological mechanism underlying the borderline personality disorder and polycystic ovary syndrome comorbidity is provided. Further rigorous studies using standardized diagnostic criteria for polycystic ovary syndrome are warranted. Specifically, the use of prospective controlled cohort studies may be able to determine the causality and temporality of observed comorbid borderline personality disorder and polycystic ovary syndrome.
Borderline organization of personality in adulthood and adolescence
Alessandra Mura
2011-01-01
About the middle of the 1950 it was proposed the definition of borderline disorder to classify some of the clinical manifestations that they are not explained by neurosis and psychosis theory. The structural approach of Otto Kernberg has been particular relief to understand the borderline disorder. O. Kernberg has been suggested theborderline organization of personality, to outline a typical permanent pathological functioning underlying string of psychopathologic syndromes associated by a sta...
Merza, Katalin; Harmatta, János; Papp, Gábor; Kuritárné Szabó, Ildikó
2017-05-01
Childhood traumatization plays a significant role in the etiology of borderline personality disorder. Studies found a significant association between childhood traumatization, dissociation, and nonsuicidal self-injurious behavior. The aim of our study was to assess dissociation and nonsuicidal self-injury among borderline inpatients and to reveal the association between childhood traumatization, dissociation, and self-injurious behavior. The sample consisted of 80 borderline inpatients and 73 depressed control patients. Childhood traumatization, dissociation and self-injurious behavior were assessed by questionnaires. Borderline patients reported severe and multiplex childhood traumatization. Cumulative trauma score and sexual abuse were the strongest predictors of dissociation. Furthermore, we have found that cumulative trauma score and dissociation were highly predictive of self-injurious behavior. Our results suggest that self-injurious behavior and dissociation in borderline patients can be regarded as indicators of childhood traumatization. Orv Hetil. 2017; 158(19): 740-747.
False memories and memory confidence in borderline patients.
Schilling, Lisa; Wingenfeld, Katja; Spitzer, Carsten; Nagel, Matthias; Moritz, Steffen
2013-12-01
Mixed results have been obtained regarding memory in patients with borderline personality disorder (BPD). Prior reports and anecdotal evidence suggests that patients with BPD are prone to false memories but this assumption has to been put to firm empirical test, yet. Memory accuracy and confidence was assessed in 20 BPD patients and 22 healthy controls using a visual variant of the false memory (Deese-Roediger-McDermott) paradigm which involved a negative and a positive-valenced picture. Groups did not differ regarding veridical item recognition. Importantly, patients did not display more false memories than controls. At trend level, borderline patients rated more items as new with high confidence compared to healthy controls. The results tentatively suggest that borderline patients show uncompromised visual memory functions and display no increased susceptibility for distorted memories. Copyright © 2013 Elsevier Ltd. All rights reserved.
Drass, Jessica Masino
2015-01-01
Art therapy has shown benefits for people with borderline personality disorder and borderline personality traits by alleviating interpersonal difficulties such as affect regulation, an unstable sense of self, self-injurious behaviors, and suicidal ideation. Borderline personality disorder is currently viewed as a trauma spectrum disorder, because…
Belsky, Daniel W; Caspi, Avshalom; Arseneault, Louise; Bleidorn, Wiebke; Fonagy, Peter; Goodman, Marianne; Houts, Renate; Moffitt, Terrie E
2012-02-01
It has been reported that borderline personality related characteristics can be observed in children, and that these characteristics are associated with increased risk for the development of borderline personality disorder. It is not clear whether borderline personality related characteristics in children share etiological features with adult borderline personality disorder. We investigated the etiology of borderline personality related characteristics in a longitudinal cohort study of 1,116 pairs of same-sex twins followed from birth through age 12 years. Borderline personality related characteristics measured at age 12 years were highly heritable, were more common in children who had exhibited poor cognitive function, impulsivity, and more behavioral and emotional problems at age 5 years, and co-occurred with symptoms of conduct disorder, depression, anxiety, and psychosis. Exposure to harsh treatment in the family environment through age 10 years predicted borderline personality related characteristics at age 12 years. This association showed evidence of environmental mediation and was stronger among children with a family history of psychiatric illness, consistent with diathesis-stress models of borderline etiology. Results indicate that borderline personality related characteristics in children share etiological features with borderline personality disorder in adults and suggest that inherited and environmental risk factors make independent and interactive contributions to borderline etiology.
[Course of borderline personality disorder: literature review].
Karaklic, D; Bungener, C
2010-10-01
Borderline personality disorder (BPD) is a serious mental disorder associated with severe emotional, behavioral, cognitive and interpersonal dysfunction, extensive functional impairment and frequent self-destructive behaviour, including deliberate self-harm and suicidal behaviour. For quite some time, BPD has been viewed as a chronic disorder and borderline patients as extremely difficult to treat, doomed to a life of misery. However, those views are changing and there is an increasing recognition that BPD has a far more benign course than previously thought. The purpose of this study is to show how those views changed over time by reviewing longitudinal studies of the course of BPD. We have reviewed the literature published from 1968 to March 2009, using the following key words: borderline personality disorder, outcome, follow-up studies with some additional references. The aim of the longitudinal studies conducted prior to the DSM definition of BPD criteria was to determine whether borderline patients could become psychotic over time, but no such evidence was found even though their functioning was at a relatively low level. The studies conducted after the introduction of BPD in the DSM in 1980 tested the stability and the specificity of BPD diagnosis, concluding that the criteria were relatively stable in the short run since the majority of patients continued to meet them at the follow-up assessments. However, those studies had many methodological drawbacks which limited their generalizability such as small sample sizes, high attrition rates, the absence of comparison groups, etc. Four retrospective studies of the 15-year outcome of borderline patients obtained virtually identical results despite methodological differences, showing that the global functioning of borderline patients improved substantially over time with mean scores of the GAF scale falling within a mild range of impairment. One 27-year retrospective study showed that borderline patients continued
Defense mechanisms in schizotypal, borderline, antisocial, and narcissistic personality disorders.
Perry, J Christopher; Presniak, Michelle D; Olson, Trevor R
2013-01-01
Numerous authors have theorized that defense mechanisms play a role in personality disorders. We reviewed theoretical writings and empirical studies about defenses in schizotypal, borderline, antisocial, and narcissistic personality disorders, developing hypotheses about these differential relationships. We then examined these hypotheses using dynamic interview data rated for defenses in a study of participants (n = 107) diagnosed with these four personality disorder types. Overall, the prevalence of immature defenses was substantial, and all four disorders fit within the broad borderline personality organization construct. Defenses predicted the most variance in borderline and the least variance in schizotypal personality disorder, suggesting that dynamic factors played the largest role in borderline and the least in schizotypal personality. Central to borderline personality were strong associations with major image-distorting defenses, primarily splitting of self and other's images, and the hysterical level defenses, dissociation and repression. Narcissistic and antisocial personality disorders shared minor image-distorting defenses, such as omnipotence or devaluation, while narcissistic also used splitting of self-images and antisocial used disavowal defenses like denial. Overall, differential relationships between specific defenses and personality disorder types were largely consistent with the literature, and consistent with the importance that the treatment literature ascribes to working with defenses.
Quantum mechanics, stochasticity and space-time
International Nuclear Information System (INIS)
Ramanathan, R.
1986-04-01
An extended and more rigorous version of a recent proposal for an objective stochastic formulation of quantum mechanics along with its extension to the relativistic case without spin is presented. The relativistic Klein-Gordon equation is shown to be a particular form of the relativistic Kolmogorov-Fokker-Planck equation which is derived from a covariant formulation of the Chapman-Kolmogorov condition. Complexification of probability amplitudes is again achieved only through a conformal rotation of Minkowski space-time M 4 . (author)
Peritoneal borderline cystoadenocarcinoma
Directory of Open Access Journals (Sweden)
Manoel João Batista Castello Girão
Full Text Available Carcinomas of peritoneal origin represent a seldom diagnosed entity of unknown etiology, with important implications in terms of prophylactic oophorectomy. Initially described in patients belonging to families at high risk for ovarian cancer, it possibly has a pathogeny similar to that of endosalpingiosis and of some cases of endometriosis. We report a case of peritoneal borderline mucinous carcinoma with an anatomopathological diagnosis of normal ovaries.
Distel, Marijn A; Trull, Timothy J; Willemsen, Gonneke; Vink, Jacqueline M; Derom, Catherine A; Lynskey, Michael; Martin, Nicholas G; Boomsma, Dorret I
2009-12-15
Recently, the nature of personality disorders and their relationship with normal personality traits has received extensive attention. The five-factor model (FFM) of personality, consisting of the personality traits neuroticism, extraversion, openness to experience, agreeableness, and conscientiousness, is one of the proposed models to conceptualize personality disorders as maladaptive variants of continuously distributed personality traits. The present study examined the phenotypic and genetic association between borderline personality and FFM personality traits. Data were available for 4403 monozygotic twins, 4425 dizygotic twins, and 1661 siblings from 6140 Dutch, Belgian, and Australian families. Broad-sense heritability estimates for neuroticism, agreeableness, conscientiousness, extraversion, openness to experience, and borderline personality were 43%, 36%, 43%, 47%, 54%, and 45%, respectively. Phenotypic correlations between borderline personality and the FFM personality traits ranged from .06 for openness to experience to .68 for neuroticism. Multiple regression analyses showed that a combination of high neuroticism and low agreeableness best predicted borderline personality. Multivariate genetic analyses showed the genetic factors that influence individual differences in neuroticism, agreeableness, conscientiousness, and extraversion account for all genetic liability to borderline personality. Unique environmental effects on borderline personality, however, were not completely shared with those for the FFM traits (33% is unique to borderline personality). Borderline personality shares all genetic variation with neuroticism, agreeableness, conscientiousness, and extraversion. The unique environmental influences specific to borderline personality may cause individuals with a specific pattern of personality traits to cross a threshold and develop borderline personality.
Ryan, Jaymee; Graham, Anne; Nelson, Barnaby; Yung, Alison
2017-06-01
The association between borderline personality disorder and the ultra high risk (UHR) for psychosis state is unclear. The following study aimed to investigate the type of attenuated psychotic symptoms and prevalence of borderline personality pathology in a sample of UHR young people. Additionally, the study aimed to explore whether borderline personality pathology influenced the transition rate to psychosis. Medical records from Orygen Youth Health between 2007 and 2009 were examined. There were 180 patients who met UHR criteria and were included for analysis. Most patients were females (62.8%) and age ranged from 15 to 24 years. A quarter (25.2%) of UHR patients endorsed items consistent with borderline personality pathology. UHR patients with borderline personality pathology experienced a range of attenuated psychotic symptoms and could not be statistically differentiated from UHR patients with less significant or without borderline personality pathology. Borderline personality pathology did not increase or decrease the risk of developing a psychotic disorder. The absence of depression was the only predictor of psychosis. Many UHR patients present with concurrent borderline personality features. The psychotic experiences reported by UHR patients with borderline personality features were not limited to paranoid ideation, supporting the idea that borderline personality disorder may include a wider range of psychotic symptoms than previously thought. It is further possible that the psychotic symptoms experienced in this group could also be indicative of an emerging psychotic disorder. © 2015 Wiley Publishing Asia Pty Ltd.
Zanarini, Mary C.; Barison, Leah K.; Frankenburg, Frances R.; Reich, D. Bradford; Hudson, James I.
2009-01-01
The purpose of this study was to assess the familial coaggregation of borderline personality disorder (BPD) with a full array of axis I disorders and four axis II disorders (antisocial personality disorder, histrionic personality disorder, narcissistic personality disorder, and sadistic personality disorder) in the first-degree relatives of borderline probands and axis II comparison subjects. Four hundred and forty-five inpatients were interviewed about familial psychopathology using the Revi...
The effects of oxytocin on social cognition in borderline personality disorder.
Servan, A; Brunelin, J; Poulet, E
2018-02-01
Deficits in social cognition and interpersonal difficulties are key features in borderline personality disorder. Social cognition refers to the function of perceiving and adequately dealing with social signals, leading to the establishment and maintenance of healthy and positive social relationships. Evidence suggests that oxytocin (OT) may improve social cognition and human social behavior. Recently, several studies have highlighted the beneficial effects of oxytocin in several psychiatric conditions involving social cognition deficits such as schizophrenia, autism or social phobia. However, despite growing interest, the effects of oxytocin in patients with borderline personality disorder are far from being clearly demonstrated. The objective of this work was to review and discuss studies investigating the interest of oxytocin in alleviating social cognition deficits in patients with borderline personality disorder (recognition of emotion, trust and cooperation, affective and cognitive empathy, emotional expression and social problem-solving). A systematic review of the literature was conducted up to September 31, 2016 on the Pubmed, Science direct, Medline and Scopus databases using "borderline personality disorder" and "oxytocin" as keywords. To be included, studies were to include patients with borderline personality disorder; to investigate social cognition and to investigate the effect of oxytocin on social cognition in patients with TPB. The initial search yielded 52 articles. Among them, 11 studies were selected according to the PRISMA criteria. The effect of oxytocin on social cognition in patients with borderline personality disorder was mainly investigated in relation to recognition of emotions and trust and cooperation. We did not find any studies investigating the effect of oxytocin on affective and cognitive empathy, emotional expression or social problem-solving abilities. In patients with borderline personality disorder, oxytocin had a beneficial
Borderline Personality Disorder and Religion: A perspective from a Muslim country.
Directory of Open Access Journals (Sweden)
Sina Hafizi
2014-09-01
Full Text Available There are still many unanswered questions about psychological and social factors that may affect the development and treatment of borderline personality disorder (BPD. Religion/spirituality (R/S is a factor that could influence the lives of people with BPD.The aim of this study was to evaluate the relationship between religiosity, religious attendance and borderline personality traits.Four hundred twenty- nine medical students of Tehran University of medical sciences participated in this study, and their information on demographics, responses to the Duke University Religion Index (DUREL, and the Structured Clinical Interview for DSM-IV Axis II Disorders (the self-administered section on BPD was obtained.The total score of SCID-II questionnaire and the number of positive borderline personality characteristics on the SCID-II were inversely related with the DUREL total score and individual DUREL items. Those with higher levels of borderline personality traits had lower total DUREL score and lower DUREL subscale scores.Religiosity and religious attendance are negatively correlated with borderline personality traits, especially with anger, instability of mood, feeling of emptiness and self-harming behaviors. These findings are important for understanding the causes of BPD and in developing treatments for this disorder.
Ibrahim, Jeyda; Cosgrave, Nicola; Woolgar, Matthew
2018-01-01
Borderline personality disorder has repeatedly been associated with a history of maltreatment in childhood; however, research on maltreatment and its link to borderline features in children is limited. The aim of this review is to synthesise the existing data on the association between maltreatment and borderline features in childhood. In total, 10 studies were included in this systematic review. Studies indicated that children with borderline features were more likely to have a history of maltreatment, and that children who had been maltreated were more likely to present with borderline features. Other risk factors such as cognitive and executive functioning deficits, parental dysfunction and genetic vulnerability were also identified across studies. This review adds to the literature by highlighting maltreatment as a risk factor for borderline features in childhood. Longitudinal research is required to establish the link between childhood borderline features and adult borderline features. Implications for early identification, prevention and intervention services are discussed.
[Pharmacotherapy in the treatment of borderline personality disorder].
Alliani, Daniela; Tarantelli, Silvia
2009-01-01
The aim of this study is to bring together the previous studies on pharmacotherapy of borderline disorder from the oldest to the recent ones, mainly focusing on atypical antipsychotic, whose success has been underlined in recent medical literature with peculiar reference to olanzapine. Since the '80 the pharmacotherapy in borderline personality disorder has been playing an increasing role in the interest of scientific community and in the medical practice as indicated by APA guidelines (2000). Nowadays the pharmacological approach, supported by some experimental outcomes, follow a so called "dimensional" standard. The targets of this standard drug approach are specific psychopathological "dimensions" of the disorder and related neurotransmitters' changes in particular linked to serotoninergic and dopaminergic systems, both supported by experimental outcomes. The psychopathological dimensions to which pharmacological approach is more suitable are: impulsiveness and emotional dysregulation. During the last past years, effectiveness of atypical antipsychotic drugs became of major interest in medical treatment of borderline disorder, mainly related to their action toward the serotoninergic and dopaminergic systems.
Thermal properties of Green's functions in Rindler, de Sitter, and Schwarzschild spaces
International Nuclear Information System (INIS)
Dowker, J.S.
1978-01-01
The conventional massless scalar Green's functions in the Minkowski, de Sitter, and two-dimensional Schwarzschild spaces are reinterpreted as finite-temperature Green's functions and the corresponding averages of the stress-energy operator are calculated. The renormalization adopted consists of subtracting the zero-temperature quantities. In all cases the averages give the stress tensor of a purely Planck-type perfect gas
Thermal ambience of expanding event horizon in Minkowski space-time
International Nuclear Information System (INIS)
Gerlach, U.H.
1983-01-01
It is shown that in flat space-time the thermal ambience of accelerated observers is not associated exclusively with flat event horizons, but arises also with (observer-dependent) event horizons that are light cones. The quanta of this ambience are characterized by a generalized frequency which identifies the representation of the Lorentz group. Global and local model detectors capable of responding to quanta of any given generalized frequency are exhibited. The discussion of the thermal ambience is implemented in terms of a partial-wave analysis using a set of harmonics on the hyperboloid x 2 +y 2 +z 2 -t 2 = 1
Reuter, Tyson R; Sharp, Carla; Kalpakci, Allison H; Choi, Hye J; Temple, Jeff R
2016-10-01
Empirical literature demonstrates that sexual minorities are at an increased risk of developing psychopathology, including borderline personality disorder (BPD). The specific link between sexual orientation and BPD has received significantly less attention in youth, and it remains unclear what drives this relation. Given that there are higher rates of psychopathology in both sexual minorities and individuals with BPD, the present study aimed to determine if sexual orientation uniquely contributes to borderline personality pathology, controlling for other psychopathology. An ethnically diverse sample of 835 adolescents completed self-report measures of borderline features, depression, anxiety, and sexual orientation. Sexual minorities scored higher on borderline features compared to heterosexual adolescents. When controlling for depression and anxiety, sexual orientation remained significantly associated with borderline features. The relation between sexual orientation and BPD cannot fully be explained by other psychopathology. Future research is necessary to understand potential mechanisms underlying this relation.
Borderline Personality Disorder in the perinatal period: early infant and maternal outcomes.
Blankley, Gaynor; Galbally, Megan; Snellen, Martien; Power, Josephine; Lewis, Andrew J
2015-12-01
This study examines pregnancy and early infant outcomes of pregnant women with a clinical diagnosis of Borderline Personality Disorder presenting for obstetric services to a major metropolitan maternity hospital in Victoria, Australia. A retrospective case review of pregnancy and early infant outcomes on 42 women who had been diagnosed with Borderline Personality Disorder via psychiatric assessment using DSM-IV-R criteria was undertaken. Outcomes were compared with a control group of 14,313 consisting of women and infants of non-affected women from the same hospital over the same period of time. Women presenting for obstetric services with a clinical diagnosis of Borderline Personality Disorder experienced considerable psychosocial impairment. They anticipated birth as traumatic and frequently requested early delivery. High comorbidity with substance abuse was found and high rates of referral to child protective services. Mothers with Borderline Personality Disorder were significantly more likely to have negative birth outcomes such as lowered Apgar scores, prematurity and special care nursery referral when compared with controls. These findings offer preliminary evidence to be considered by clinicians in developing treatments and services for the perinatal care of women with Borderline Personality Disorder and their infants. Further research is required in order to develop evidence informed clinical guidelines for the management of women with Borderline Personality Disorder and their infants. © The Royal Australian and New Zealand College of Psychiatrists 2015.
Keng, Shian-Ling; Wong, Yun Yi
2017-01-01
Linehan's biosocial theory posits that parental invalidation during childhood plays a role in the development of borderline personality disorder symptoms later in life. However, little research has examined components of the biosocial model in an Asian context, and variables that may influence the relationship between childhood invalidation and borderline symptoms. Self-compassion is increasingly regarded as an adaptive way to regulate one's emotions and to relate to oneself, and may serve to moderate the association between invalidation and borderline symptoms. The present study investigated the association among childhood invalidation, self-compassion, and borderline personality disorder symptoms in a sample of Singaporean undergraduate students. Two hundred and ninety undergraduate students from a large Singaporean university were recruited and completed measures assessing childhood invalidation, self-compassion, and borderline personality disorder symptoms. Analyses using multiple regression indicated that both childhood invalidation and self-compassion significantly predicted borderline personality disorder symptomatology. Results from moderation analyses indicated that relationship between childhood invalidation and borderline personality disorder symptomatology did not vary as a function of self-compassion. This study provides evidence in support of aspects of the biosocial model in an Asian context, and demonstrates a strong association between self-compassion and borderline personality disorder symptoms, independent of one's history of parental invalidation during childhood.
A Non-linear Predictive Model of Borderline Personality Disorder Based on Multilayer Perceptron.
Maldonato, Nelson M; Sperandeo, Raffaele; Moretto, Enrico; Dell'Orco, Silvia
2018-01-01
Borderline Personality Disorder is a serious mental disease, classified in Cluster B of DSM IV-TR personality disorders. People with this syndrome presents an anamnesis of traumatic experiences and shows dissociative symptoms. Since not all subjects who have been victims of trauma develop a Borderline Personality Disorder, the emergence of this serious disease seems to have the fragility of character as a predisposing condition. Infect, numerous studies show that subjects positive for diagnosis of Borderline Personality Disorder had scores extremely high or extremely low to some temperamental dimensions (harm Avoidance and reward dependence) and character dimensions (cooperativeness and self directedness). In a sample of 602 subjects, who have had consecutive access to an Outpatient Mental Health Service, it was evaluated the presence of Borderline Personality Disorder using the semi-structured interview for the DSM IV-TR personality disorders. In this population we assessed the presence of dissociative symptoms with the Dissociative Experiences Scale and the personality traits with the Temperament and Character Inventory developed by Cloninger. To assess the weight and the predictive value of these psychopathological dimensions in relation to the Borderline Personality Disorder diagnosis, a neural network statistical model called "multilayer perceptron," was implemented. This model was developed with a dichotomous dependent variable, consisting in the presence or absence of the diagnosis of borderline personality disorder and with five covariates. The first one is the taxonomic subscale of dissociative experience scale, the others are temperamental and characterial traits: Novelty-Seeking, Harm-Avoidance, Self-Directedness and Cooperativeness. The statistical model, that results satisfactory, showed a significance capacity (89%) to predict the presence of borderline personality disorder. Furthermore, the dissociative symptoms seem to have a greater influence than
A Non-linear Predictive Model of Borderline Personality Disorder Based on Multilayer Perceptron
Directory of Open Access Journals (Sweden)
Nelson M. Maldonato
2018-04-01
Full Text Available Borderline Personality Disorder is a serious mental disease, classified in Cluster B of DSM IV-TR personality disorders. People with this syndrome presents an anamnesis of traumatic experiences and shows dissociative symptoms. Since not all subjects who have been victims of trauma develop a Borderline Personality Disorder, the emergence of this serious disease seems to have the fragility of character as a predisposing condition. Infect, numerous studies show that subjects positive for diagnosis of Borderline Personality Disorder had scores extremely high or extremely low to some temperamental dimensions (harm Avoidance and reward dependence and character dimensions (cooperativeness and self directedness. In a sample of 602 subjects, who have had consecutive access to an Outpatient Mental Health Service, it was evaluated the presence of Borderline Personality Disorder using the semi-structured interview for the DSM IV-TR personality disorders. In this population we assessed the presence of dissociative symptoms with the Dissociative Experiences Scale and the personality traits with the Temperament and Character Inventory developed by Cloninger. To assess the weight and the predictive value of these psychopathological dimensions in relation to the Borderline Personality Disorder diagnosis, a neural network statistical model called “multilayer perceptron,” was implemented. This model was developed with a dichotomous dependent variable, consisting in the presence or absence of the diagnosis of borderline personality disorder and with five covariates. The first one is the taxonomic subscale of dissociative experience scale, the others are temperamental and characterial traits: Novelty-Seeking, Harm-Avoidance, Self-Directedness and Cooperativeness. The statistical model, that results satisfactory, showed a significance capacity (89% to predict the presence of borderline personality disorder. Furthermore, the dissociative symptoms seem to have a
Broadbear, Jillian H; Nesci, Julian; Thomas, Rosemary; Thompson, Katherine; Beatson, Josephine; Rao, Sathya
2016-12-01
Residential patients diagnosed with borderline personality disorder were evaluated to determine whether borderline personality disorder-focused psychotherapy reduced prescribing, personality disorder and co-morbid symptom severity. Psychotropic prescriptions were measured at admission, discharge and 1 year later in 74 female participants with one or more personality disorder diagnosis and co-morbid mood disorders. Changes in pharmacotherapy were examined in the context of improvements in borderline personality disorder and/or co-morbid disorder symptom severity. Residential treatment included individual and group psychotherapy for borderline personality disorder. The Structured Clinical Interview for DSM-IV was used to confirm the borderline personality disorder diagnosis and associated co-morbid conditions. The Beck Depression Inventory was completed at each time point. A significant reduction in the incidence and severity of self-rated depression as well as clinician assessed personality disorder, including borderline personality disorder, was accompanied by a reduction in prescription of psychoactive medications. Three to six months of intensive borderline personality disorder-specific psychotherapy showed lasting benefit with regard to symptom severity of personality disorders (borderline personality disorder in particular) as well as depressive symptoms. This improvement corresponded with a reduction in prescriptions for psychoactive medications, which is consistent with current thinking regarding treatment for borderline personality disorder. © The Royal Australian and New Zealand College of Psychiatrists 2016.
[Anorexia and borderline personality disorder : bonds pathology].
Cayn, Delphine; Pham-Scottez, Alexandra
Comorbidity with a borderline personality disorder is far from rare in patients suffering from eating disorders. Clinically, this presents as chronic instability in many areas: interpersonal relationships, self-image, emotions, mood and acting out. Treatment is mainly based on a containing and reassuring therapeutic framework. A care plan may be put in place that incorporates reducing impulsive harmful, eating and self-harming behaviours. Dialectical behaviour therapy is intended in particular to prevent suicide risk in borderline personality disorder patients. Copyright Â© 2016 Elsevier Masson SAS. All rights reserved.
Marques, Sofia; Barrocas, Daniel; Rijo, Daniel
2017-04-28
Borderline personality disorder is the most common personality disorder, with a global prevalence rate between 1.6% and 6%. It is characterized by affective disturbance and impulsivity, which lead to a high number of self-harm behaviors and great amount of health services use. International guidelines recommend psychotherapy as the primary treatment for borderline personality disorder. This paper reviews evidence about the effects and efficacy of cognitive-behavioral oriented psychological treatments for borderline personality disorder. A literature review was conducted in Medline and PubMed databases, using the following keywords: borderline personality disorder, cognitive-behavioral psychotherapy and efficacy. Sixteen randomized clinical trials were evaluate in this review, which analyzed the effects of several cognitive-behavioral oriented psychotherapeutic interventions, namely dialectical behavioral therapy, cognitive behavioral therapy, schema-focused therapy and manual-assisted cognitive therapy. All above stated treatments showed clinical beneficial effects, by reducing borderline personality disorder core pathology and associated general psychopathology, as well as by reducing the severity and frequency of self-harm behaviors, and by improving the overall social, interpersonal and global adjustment. Dialectical behavioral therapy and schema-focused therapy also caused a soaring remission rate of diagnostic borderline personality disorder criteria of 57% and 94%, respectively. Although there were differences between the psychotherapeutic interventions analysed in this review, all showed clinical benefits in the treatment of borderline personality disorder. Dialectical behavioral therapy and schema-focused therapy presented the strongest scientific data documenting their efficacy, but both interventions are integrative cognitive-behavioral therapies which deviate from the traditional cognitive-behavioral model. In summary, the available studies support
Reitz, Sarah; Kluetsch, Rosemarie; Niedtfeld, Inga; Knorz, Teresa; Lis, Stefanie; Paret, Christian; Kirsch, Peter; Meyer-Lindenberg, Andreas; Treede, Rolf-Detlef; Baumgärtner, Ulf; Bohus, Martin; Schmahl, Christian
2015-08-01
Patients with borderline personality disorder frequently show non-suicidal self-injury (NSSI). In these patients, NSSI often serves to reduce high levels of stress. Investigation of neurobiological mechanisms of NSSI in borderline personality disorder. In total, 21 women with borderline personality disorder and 17 healthy controls underwent a stress induction, followed by either an incision into the forearm or a sham treatment. Afterwards participants underwent resting-state functional magnetic resonance imaging while aversive tension, heart rate and heart rate variability were assessed. We found a significant influence of incision on subjective and objective stress levels with a stronger decrease of aversive tension in the borderline personality disorder group following incision than sham. Amygdala activity decreased more and functional connectivity with superior frontal gyrus normalised after incision in the borderline personality disorder group. Decreased stress levels and amygdala activity after incision support the assumption of an influence of NSSI on emotion regulation in individuals with borderline personality disorder and aids in understanding why these patients use self-inflicted pain to reduce inner tension. © The Royal College of Psychiatrists 2015.
Autobiographical memory in borderline personality disorder-A systematic review.
Bech, Morten; Elklit, Ask; Simonsen, Erik
2015-05-01
Borderline personality disorder is a severe psychiatric illness. A key feature of the disorder is a disorganized sense of self often referred to as identity diffusion. Autobiographical memory is memory for personal life events. One of the main functions of these memories is to enable us to understand who we are by connecting past, present and future experiences. It seems that autobiographical memory is in some way disrupted in individuals with borderline personality disorder. A systematic review is conducted looking at studies that focus on the potential connections. We find that although a number of studies have been published results remain inconsistent. Furthermore, we find that many of the studies suffer from inadequate designs particularly regarding the reported measures of autobiographical memory. We discuss potential links between personality functioning, identity diffusion, autobiographical memory and borderline personality disorder. Copyright © 2015 John Wiley & Sons, Ltd.
Early Intervention for Borderline Personality Disorder: Psychodynamic Therapy in Adolescents.
Salzer, Simone; Cropp, Carola; Streeck-Fischer, Annette
2014-01-01
Borderline personality disorder (BPD) should be understood as a disorder of development (Streeck-Fischer 2008, 2013) that has its first manifestation in late childhood and adolescence. There are only few treatment studies of adolescents meeting the diagnostic criteria of borderline personality disorder, although early interventions for these patients are urgently needed (see Chanen & McCutcheon 2013). We examined the effectiveness of an inpatient psychodynamic therapy (PDT). Twenty-eight adolescents fulfilling the DSM-IV diagnostic criteria of borderline personality disorder were treated with psychodynamic therapy. The mean duration of treatment was 29.87 weeks (SD = 15.88). Outcomes were remission rates, GAF, GSI, SDQ, IIP and BPI scores. Assessments were made at admission and after treatment. Pre-post comparisons and comparisons with normative data were conducted. At the end of treatment 39.29% of the patients were remitted. We found significant improvements for the GAF, GSI, SDQ, IIP (all p0.001) and the BPI (p = 0.006). These clinically relevant improvements demonstrate the effectiveness of psychodynamic therapy in adolescents with borderline personality disorder and stress the usefulness of an early intervention for these patients.
Sansone, Randy A; Sansone, Lori A
2015-01-01
Borderline personality disorder is a personality dysfunction that is characterized by disinhibition and impulsivity, which oftentimes manifest as self-regulation difficulties. Patients with this disorder have always been present in medical settings, but have been described as "difficult patients" rather than patients with borderline personality disorder. According to empirical findings, a number of behaviors and medical syndromes/diagnoses are suggestive of borderline personality disorder. Suggestive behaviors in the medical setting may include aggressive or disruptive behaviors, the intentional sabotage of medical care, and excessive healthcare utilization. Suggestive medical syndromes and diagnoses in the medical setting may include alcohol and substance misuse (including the abuse of prescription medications), multiple somatic complaints, chronic pain, obesity, sexual impulsivity, and hair pulling. While not all-inclusive or diagnostic, these behaviors and syndromes/diagnoses may invite further clinical evaluation of the patient for borderline personality disorder.
Elzy, Meredith B.
2011-01-01
The relationship between childhood sexual abuse and borderline personality disorder is a prominent issue in the etiological research on borderline personality disorder. This study further explored the relationship between childhood sexual abuse and the development of borderline personality features while evaluating the moderating role of a primary…
A Minkowski Fractal Circularly Polarized Antenna for RFID Reader
Directory of Open Access Journals (Sweden)
Yanzhong Yu
2014-11-01
Full Text Available A design of fractal-like antenna with circular polarization for radio frequency identification (RFID reader applications is presented in this article. The modified Minkowski fractal structure is adopted as radiating patch for size reduction and broadband operation. A corner-truncated technology and a slot-opened method are employed to realize circular polarization and improve the gain of the proposed antenna, respectively. The proposed antenna is analyzed and optimized by HFSS. Return loss and maximum gain of the optimized antenna achieve to -22.2 dB and 1.12 dB at 920 MHz, respectively. The optimized design has an axial ratio (AR of 1.2 dB at central frequency of 920 MHz and impedance bandwidth (S11<=-10 dB of 40 MHz (4.3 %. Its input impedance is (57.9-j2.6 W that is close to input impedance of coaxial line (50 W. Numerical results demonstrate that the optimized antenna exhibits acceptable performances and may satisfy requirements of RFID reader applications.
Familial resemblance of borderline personality disorder features: genetic or cultural transmission?
Directory of Open Access Journals (Sweden)
Marijn A Distel
Full Text Available Borderline personality disorder is a severe personality disorder for which genetic research has been limited to family studies and classical twin studies. These studies indicate that genetic effects explain 35 to 45% of the variance in borderline personality disorder and borderline personality features. However, effects of non-additive (dominance genetic factors, non-random mating and cultural transmission have generally not been explored. In the present study an extended twin-family design was applied to self-report data of twins (N = 5,017 and their siblings (N = 1,266, parents (N = 3,064 and spouses (N = 939 from 4,015 families, to estimate the effects of additive and non-additive genetic and environmental factors, cultural transmission and non-random mating on individual differences in borderline personality features. Results showed that resemblance among biological relatives could completely be attributed to genetic effects. Variation in borderline personality features was explained by additive genetic (21%; 95% CI 17-26% and dominant genetic (24%; 95% CI 17-31% factors. Environmental influences (55%; 95% CI 51-60% explained the remaining variance. Significant resemblance between spouses was observed, which was best explained by phenotypic assortative mating, but it had only a small effect on the genetic variance (1% of the total variance. There was no effect of cultural transmission from parents to offspring.
Tensor Minkowski Functionals: first application to the CMB
Energy Technology Data Exchange (ETDEWEB)
Ganesan, Vidhya [Indian Institute of Astrophysics, Koramangala II Block, Bangalore 560 034 (India); Chingangbam, Pravabati, E-mail: vidhya@iiap.res.in, E-mail: prava@iiap.res.in [Indian Institute of Science, C.V. Raman Ave, Bangalore 560 012 (India)
2017-06-01
Tensor Minkowski Functionals (TMFs) are tensor generalizations of the usual Minkowski Functionals which are scalar quantities. We introduce them here for use in cosmological analysis, in particular to analyze the Cosmic Microwave Background (CMB) radiation. They encapsulate information about the shapes of structures and the orientation of distributions of structures. We focus on one of the TMFs, namely W {sub 2}{sup 1,1}, which is the (1,1) rank tensor generalization of the genus. The ratio of the eigenvalues of the average of W {sub 2}{sup 1,1} over all structures, α, encodes the net orientation of the structures; and the average of the ratios of the eigenvalues of W {sub 2}{sup 1,1} for each structure, β, encodes the net intrinsic anisotropy of the structures. We have developed a code that computes W {sub 2}{sup 1,1}, and from it α and β, for a set of structures on the 2-dimensional Euclidean plane. We use it to compute α and β as functions of chosen threshold levels for simulated Gaussian and isotropic CMB temperature and E mode fields. We obtain the value of α to be one for both temperature and E mode, which means that we recover the statistical isotropy of density fluctuations that we input in the simulations. We find that the standard ΛCDM model predicts a charateristic shape of β for temperature and E mode as a function of the threshold, and the average over thresholds is β∼ 0.62 for temperature and β∼ 0.63 for E mode. Accurate measurements of α and β can be used to test the standard model of cosmology and to search for deviations from it. For this purpose we compute α and β for temperature and E mode data of various data sets from PLANCK mission. We compare the values measured from observed data with those obtained from simulations to which instrument beam and noise characteristics of the 44GHz frequency channel have been added (which are provided as part of the PLANCK data release). We find very good agreement of β and α between all
Borderline personality disorder and the emerging field of developmental neuroscience.
Crowell, Sheila E; Kaufman, Erin A
2016-10-01
Over the past 2 decades there has been a dramatic shift in understanding of personality disorders, such as borderline personality disorder (BPD). What was historically viewed as an entrenched pattern of antagonistic, interpersonally dependent, and uncorrectable conduct is now seen as the outcome of complex-yet modifiable-developmental processes. The borderline label, which once inspired such harsh opprobrium in clinical communities that early diagnosis was considered taboo, is now increasingly applied to adolescents who are receiving effective treatment and desisting from a borderline trajectory. Research examining the developmental origins and early manifestations of BPD is increasing rapidly, making it an appropriate time to take stock of current developmental research and articulate an agenda for the future. We identify 4 challenges that continue to impede innovative research on borderline personality development: (a) inadequate attention to continuity and discontinuity across development, (b) medical and diagnostic systems that localize personality pathology within the individual, (c) the lingering belief that biological research is antithetical to contextual/interpersonal understandings of psychopathology (and vice versa), and (d) reluctance to reach across disciplinary and developmental boundaries to identify creative paradigms and foster innovative discovery. In order to overcome these challenges, we propose an approach to future research on adolescent borderline pathology that integrates developmental psychopathology, social and affective neuroscience, and personality theory perspectives. This intersection-the developmental neuroscience of personality pathology-offers theoretical and methodological advantages over disciplinary isolation and is fertile ground for generating novel hypotheses on the development and prevention of BPD. (PsycINFO Database Record (c) 2016 APA, all rights reserved).
Risk for borderline ovarian tumours after exposure to fertility drugs
DEFF Research Database (Denmark)
Bjørnholt, Sarah Marie; Kjaer, Susanne Krüger; Nielsen, Thor Schütt Svane
2015-01-01
numbers. To obtain information on use of fertility drugs, hospital files and medical records of infertility-associated visits to all Danish fertility clinics were collected and supplemented with information from the Danish IVF register. We used case-cohort techniques to calculate rate ratios (RRs......STUDY QUESTION: Do fertility drugs increase the risk for borderline ovarian tumours, overall and according to histological subtype? SUMMARY ANSWER: The use of any fertility drug did not increase the overall risk for borderline ovarian tumours, but an increased risk for serous borderline ovarian...... tumours was observed after the use of progesterone. WHAT IS KNOWN ALREADY: Many epidemiological studies have addressed the connection between fertility drugs use and risk for ovarian cancer; most have found no strong association. Fewer studies have assessed the association between use of fertility drugs...
Belsky, D.; Caspi, A.; Arseneault, L.; Bleidorn, W.; Fonagy, P.; Goodman, M.; Houts, R.; Moffitt, T.
2012-01-01
It has been reported that borderline personality related characteristics can be observed in children, and that these characteristics are associated with increased risk for the development of borderline personality disorder. It is not clear whether borderline personality related characteristics in
The psychodynamics of borderline psychopathology.
Corradi, Richard B
2015-01-01
The concept of borderline personality disorder (BPD) remains problematic despite psychiatrists' general familiarity with its DSM diagnostic criteria. The diagnosis of BPD is frequently based simply on the DSM checklist of traits and symptoms without knowledge of their origins or significance. Misdiagnosis is common, as is lack of recognition of the full complexity of this severe personality disorder and the nature of the vulnerabilities that underlie its myriad forms of pathology. The stresses of ordinary life are often too much for people with BPD. Knowledge of the nature and origins of their stress points, such as their great fear of loss or rejection, is necessary for adequate diagnosis and treatment. The author addresses how signature features of the disorder relate to psychosocial development, how they correlate with failed developmental milestones, and how they can be understood psychodynamically. This is essential knowledge for psychotherapists because the pathological interpersonal relationships of the borderline patient will be repeated and acted out in the transference, whatever the modality or intensity of treatment.
Canaz, Emel; Kilinc, Metin; Sayar, Hamide; Kiran, Gurkan; Ozyurek, Eser
2017-09-01
Wide variation exists in ovarian cancer incidence rates suggesting the importance of environmental factors. Due to increasing environmental pollution, trace elements and heavy metals have drawn attention in studies defining the etiology of cancer, but scant data is available for ovarian cancer. Our aim was to compare the tissue concentrations of lead, selenium and nickel in epithelial ovarian cancer, borderline tumor and healthy ovarian tissues. The levels of lead, selenium and nickel were estimated using atomic absorption spectrophotometry in formalin-fixed paraffin-embedded tissue samples. Tests were carried out in 20 malignant epithelial ovarian cancer, 15 epithelial borderline tumor and 20 non-neoplastic healthy ovaries. Two samples were collected for borderline tumors, one from papillary projection and one from the smooth surface of cyst wall. Pb and Ni concentrations were found to be higher both in malignant and borderline tissues than those in healthy ovaries. Concentrations of Pb and Ni in malignant tissues, borderline papillary projections and capsular tissue samples were not different. Comparison of Se concentrations of malignant, borderline and healthy ovarian tissues did not reveal statistical difference. Studied metal levels were not found to be different in either papillary projection or in cyst wall of the borderline tumors. This study revealed the accumulation of lead and nickel in ovarian tissue is associated with borderline and malignant proliferation of the surface epithelium. Accumulation of these metals in epithelial ovarian cancer and borderline ovarian tumor has not been demonstrated before. Copyright © 2017 Elsevier GmbH. All rights reserved.
Directory of Open Access Journals (Sweden)
Mariana Eizirik
2009-03-01
Full Text Available OBJECTIVE: To describe the concept of mentalization, and its application in understanding the development of psychopathology in patients with borderline personality disorder; to give an account of the main features of mentalization-based treatment; to summarise the evidence supporting its effectiveness. DISCUSSION: Mentalization is a predominantly preconscious mental activity that enables the individual to understand him/herself and others in terms of subjective states and mental processes. Psychological trauma in childhood is associated with deficits in mentalization and with the development of borderline personality disorder. Mentalization-based treatment is a psychodynamically-oriented manualized psychotherapy for borderline personality disorder that aims to develop a therapeutic process in which the patient's capacity for mentalization becomes the focus of treatment. Randomized controlled trials have demonstrated the effectiveness of this treatment for patients with borderline personality disorder. CONCLUSIONS: The development of a psychodynamically-oriented therapeutic intervention that specifically targets the deficits involved in the psychopathology of borderline personality disorder is a crucial step in increasing the effectiveness of treatment. Mental health professionals should be adequately prepared to deliver effective interventions to their patients, such as mentalization-based treatment.OBJETIVO: Descrever o conceito de mentalização e sua aplicação no entendimento do desenvolvimento da psicopatologia em pacientes com transtorno de personalidade borderline; descrever as principais características da terapia de mentalização; sumarizar as evidências que demonstram sua efetividade. DISCUSSÃO: Mentalização é uma atividade mental predominantemente pré-consciente que capacita o indivíduo a compreender a si mesmo e aos outros em termos de estados subjetivos e processos mentais. Trauma psicológico na infância está associado
The geometry of plane waves in spaces of constant curvature
International Nuclear Information System (INIS)
Tran, H.V.
1988-01-01
We examined the geometry of possible plane wave fronts in spaces of constant curvature for three cases in which the cosmological constant is positive, zero, or negative. The cosmological constant and a second-order invariant determined by a congruence of null rays were used in the investigation. We embedded the spaces under investigation in a flat five-dimensional space, and studied the null hyperplanes passing through the origin of the flat five-dimensional space. The embedded spaces are represented by quadrics in the five-dimensional space. The plane wave fronts are represented by the intersection of the quadric with null hyperplanes passing through the origin of the five-dimensional space. We concluded that in Minkowski spaces (zero cosmological constant), the plane-fronted waves will intersect if and only if the second-order invariant mentioned above is non-zero. For deSitter spaces (positive cosmological constant), plane-fronted waves will always intersect. For anti-deSitter spaces (negative cosmological constant), plane-fronted waves may but need not intersect
Sharp, Carla; Kalpakci, Allison; Mellick, William; Venta, Amanda; Temple, Jeff R
2015-03-01
At least two leading developmental models of borderline personality disorder (BPD) emphasize the role of accurate reflection and understanding of internal states as significant to the development of BPD features (Fonagy, Int J Psycho-Anal 72:639-656, 1991; Linehan, Cognitive-behavioral treatment of borderline personality disorder, 1993). The current study used the construct of experiential avoidance (EA) to operationalize avoidance of internal states and sought to examine (1) the concurrent relations between EA and borderline features in a large and diverse community sample; and (2) the prospective relation between EA and borderline features over a 1-year follow-up, controlling for baseline levels of borderline features. N = 881 adolescents recruited from public schools in a large metropolitan area participated in baseline assessments and N = 730 completed follow-up assessments. Two main findings were reported. First, EA was associated with borderline features, depressive, and anxiety symptoms at the bivariate level, but when all variables were considered together, depression and anxiety no longer remained significantly associated with borderline features, suggesting that the relations among these symptom clusters may be accounted for by EA as a cross-cutting underlying psychological process. Second, EA predicted levels of borderline symptoms at 1-year follow-up, controlling for baseline levels of borderline symptoms, and symptoms of anxiety and depression. Results are interpreted against the background of developmental theories of borderline personality disorder.
Borderline personality disorder in the primary care setting.
Dubovsky, Amelia N; Kiefer, Meghan M
2014-09-01
Borderline personality disorder is estimated to be present in approximately 6% of outpatient primary care settings. However, the time and energy spent on this population can greatly exceed what primary care doctors are able to spend. This article gives an overview of borderline personality disorder, including the clinical characteristics, epidemiology, and comorbidities, as well as pharmacologic and most important behavioral management. It is our hope that, with improved understanding of the disorder and skills for managing this population, caring for patients with the disorder can be more satisfying and less taxing for both primary care doctors and their patients. Copyright © 2014 Elsevier Inc. All rights reserved.
Consistent Lorentz violation in flat and curved space
International Nuclear Information System (INIS)
Dvali, Gia; Pujolas, Oriol; Redi, Michele
2007-01-01
Motivated by the severity of the bounds on Lorentz violation in the presence of ordinary gravity, we study frameworks in which Lorentz violation does not affect the spacetime geometry. We show that there are at least two inequivalent classes of spontaneous Lorentz breaking that even in the presence of gravity result in Minkowski space. The first one generically corresponds to the condensation of tensor fields with tachyonic mass, which in turn is related to ghost condensation. In the second class, realized by the Dvali-Gabadadze-Porrati model or theories of massive gravitons, spontaneous Lorentz breaking is induced by the expectation value of sources. The generalization to de Sitter space is also discussed
DEFF Research Database (Denmark)
Beck, Emma; Sharp, Carla; Poulsen, Stig
2017-01-01
Background: Insecure attachment is a precursor and correlate of borderline personality disorder. According to the mentalization-based theory of borderline personality disorder, the presence of insecure attachment derails the development of the capacity to mentalize, potentially resulting in borde......Background: Insecure attachment is a precursor and correlate of borderline personality disorder. According to the mentalization-based theory of borderline personality disorder, the presence of insecure attachment derails the development of the capacity to mentalize, potentially resulting...... personality features. Our findings suggest that in a simple mediational model, mentalizing capacity mediated the relation between attachment to peers and borderline features. In the case of attachment to parents, the mediational model was not significant. Conclusions: The current study is the first...... to evaluate this mediational model with parent and peer attachment as separate concepts and the first to do so in a sample of adolescents who meet full or sub-threshold criteria for borderline personality disorder. Findings incrementally support that mentalizing capacity and attachment insecurity, also...
Borderline personality disorder and emotional intelligence
Peter, M.; Schuurmans, H.; Vingerhoets, A.J.J.M.; Smeets, G.; Verkoeijen, P.; Arntz, A.
2013-01-01
The present study investigated emotional intelligence (EI) in borderline personality disorder (BPD). It was hypothesized that patients with BPD (n = 61) compared with patients with other personality disorders (PDs; n = 69) and nonpatients (n = 248) would show higher scores on the ability to perceive
Spontaneous symmetry breaking in curved space-time
International Nuclear Information System (INIS)
Toms, D.J.
1982-01-01
An approach dealing with some of the complications which arise when studying spontaneous symmetry breaking beyond the tree-graph level in situations where the effective potential may not be used is discussed. These situations include quantum field theory on general curved backgrounds or in flat space-times with non-trivial topologies. Examples discussed are a twisted scalar field in S 1 xR 3 and instabilities in an expanding universe. From these it is seen that the topology and curvature of a space-time may affect the stability of the vacuum state. There can be critical length scales or times beyond which symmetries may be broken or restored in certain cases. These features are not present in Minkowski space-time and so would not show up in the usual types of early universe calculations. (U.K.)
Intertwined Hamiltonians in two-dimensional curved spaces
International Nuclear Information System (INIS)
Aghababaei Samani, Keivan; Zarei, Mina
2005-01-01
The problem of intertwined Hamiltonians in two-dimensional curved spaces is investigated. Explicit results are obtained for Euclidean plane, Minkowski plane, Poincare half plane (AdS 2 ), de Sitter plane (dS 2 ), sphere, and torus. It is shown that the intertwining operator is related to the Killing vector fields and the isometry group of corresponding space. It is shown that the intertwined potentials are closely connected to the integral curves of the Killing vector fields. Two problems are considered as applications of the formalism presented in the paper. The first one is the problem of Hamiltonians with equispaced energy levels and the second one is the problem of Hamiltonians whose spectrum is like the spectrum of a free particle
Reinelt, Eva; Stopsack, Malte; Aldinger, Maren; Ulrich, Ines; Grabe, Hans Jörgen; Barnow, Sven
2014-01-01
There is evidence that the borderline symptomatology of the mother longitudinally predicts the number of borderline criteria met by the children. However, possible underlying mechanisms have rarely been examined. In line with transactional models of borderline personality disorder (BPD), we analyzed a broad concept of maladaptive mother-child interactions of mothers with BPD symptoms towards their children, including insensitive parenting and mother-child discrepancies, in reporting the child's psychopathological behavior. SAMPLING/METHODS: The sample was drawn from the population-based Greifswald Family Study and consisted of 295 children and their biological mothers. Both were examined at two points in time, first when the children were about 15 years old (T0) and again 5 years later (T1), using path analyses. Maladaptive mother-child interactions (especially an overprotective and rejecting parenting style and high discrepancies regarding internalizing problems) mediate the longitudinal transmission of borderline symptoms from mother to child. Furthermore, our data revealed that this result is consistent for various youth symptoms which are associated with BPD such as impulsivity or dissociation. The data of the current study imply that the transmission of borderline symptoms from mother to child is mediated by maladaptive mother-child interactions. For this reason early and professional support may be useful to prevent these children from developing severe psychopathology. Copyright © 2012 S. Karger AG, Basel.
Childhood adversity and borderline personality disorder: a focus on adolescence.
Newnham, Elizabeth A; Janca, Aleksandar
2014-01-01
This article explores recent research in the field of childhood exposure to trauma and the development of borderline personality disorder in adolescence. Adolescence is a critical period of development. Exposure to trauma, specifically sexual abuse, prior to and during puberty has specific implications for personality development and heightens risk for borderline personality disorder. Elevated symptom levels in adolescence are likely to decline across adulthood, but social and vocational impairments remain. Impulsivity, difficulties in emotion regulation, and suicidality may characterize adolescent expression of borderline personality disorder, whereas negative affect and functional impairment are more stable features of the disorder. Preliminary findings in treatment models for adults have potential for benefit among adolescence. Further research is required to examine treatment effectiveness and efficiency. Greater attention to low-income and middle-income nations, which are disproportionately affected by adversity, is needed to determine cross-cultural validity and the impact of trauma in adolescent populations.
[Laparoscopic management of ovarian borderline tumors].
Cortés Algara, A; Charles, L; González Ramírez, P; Río de la Loza, F; Aranda Flores, C E
2001-09-01
The objective of this communication is to present a patient case with ovarian borderline tumor. The conservative management for laparoscopy, and we performed an analysis of the mundial literature in which respect to the conservative and laparoscopy management, in spite of the laparoscopy management are of controversy.
Vulnerability, Borderline Personality Disorders. Clinical and ...
African Journals Online (AJOL)
Borderline personality disorder and vulnerability are difficult to assess and are rather elusive to define. A case study material is presented from a cognitive analytical model. An attempt of the dominant features of cognitive analytical therapy and discussion of vulnerability in relation to personality disorder is provided.
Generation borderline: Insecurity of family bondings and the world of addiction
Directory of Open Access Journals (Sweden)
Nicolò Terminio
2014-09-01
Full Text Available The article concerns of the psychopathology of drug addiction, with an emphasis on the phenomenology of borderline personality disorder. The attention is focused on setting up of family ties in subjects with substance abuse disorders. In particular the anthropological frame of trauma is studied which presents itself as the core on which the therapeutic work is based. Keywords:Addiction; Borderline personality disorder; Trauma
Quantum Space-Time Deformed Symmetries Versus Broken Symmetries
Amelino-Camelia, G
2002-01-01
Several recent studies have concerned the faith of classical symmetries in quantum space-time. In particular, it appears likely that quantum (discretized, noncommutative,...) versions of Minkowski space-time would not enjoy the classical Lorentz symmetries. I compare two interesting cases: the case in which the classical symmetries are "broken", i.e. at the quantum level some classical symmetries are lost, and the case in which the classical symmetries are "deformed", i.e. the quantum space-time has as many symmetries as its classical counterpart but the nature of these symmetries is affected by the space-time quantization procedure. While some general features, such as the emergence of deformed dispersion relations, characterize both the symmetry-breaking case and the symmetry-deformation case, the two scenarios are also characterized by sharp differences, even concerning the nature of the new effects predicted. I illustrate this point within an illustrative calculation concerning the role of space-time symm...
Directory of Open Access Journals (Sweden)
Wei-Hsin Lu
2018-04-01
Full Text Available Purpose: This study examined the differences in mental health and behavioral problems among young adults with borderline personality symptoms of various severities. Methods: 500 college students participated in this study. Borderline personality symptoms were evaluated using the Taiwanese version of the Borderline Symptom List (BSL-23. Mental health problems were assessed using the Symptom Checklist-90-Revised Scale. Suicidality and other behavioral problems were assessed using questions from the epidemiological version of the Kiddie Schedule for Affective Disorders and Schizophrenia and BSL-23 Supplement. According to the distribution of BSL-23 scores at the 25th, 50th, and 75th percentiles, the participants were divided into 4 groups: No/Mild, Moderate, Severe, and Profound. Analysis of variance and the chi-square test were used to compare mental health and behavioral problems among the 4 groups. Results: All mental health problems differed significantly among the 4 groups. The severity of nearly all mental health problems increased with that of borderline personality symptoms. The proportions of most behavioral problems differed significantly among the 4 groups. The Profound group was more likely to have behavioral problems than the other 3 groups. Conclusion: Young adults who had more severe borderline personality symptoms had more severe mental health and behavioral problems. Keywords: Borderline personality, Mental health, Suicidality
Grandiose and Vulnerable Narcissism in Borderline Personality Disorder.
Euler, Sebastian; Stöbi, Dominik; Sowislo, Julia; Ritzler, Franziska; Huber, Christian G; Lang, Undine E; Wrege, Johannes; Walter, Marc
2018-02-21
Little is known about narcissistic traits in borderline personality disorder (BPD). This exploratory study aimed to illustrate the associations between total, grandiose, and vulnerable narcissism and gender, diagnostic features of BPD and narcissistic personality disorder (NPD), and psychopathology in BPD patients. The Pathological Narcissism Inventory and psychometric measures for impulsivity, anger, borderline symptom severity, personality organization, depression, and rejection sensitivity were completed by 65 BPD patients. Statistical analyses were conducted using the t test, Pearson correlation, and multivariate regression analyses. Male BPD patients displayed higher narcissistic scores than females (p personality disorders. Future studies are advised to apply complementary measures and take new diagnostic approaches of DSM-5 and ICD-11 into account. © 2018 S. Karger AG, Basel.
Koenigsberg, Harold W; Denny, Bryan T; Fan, Jin; Liu, Xun; Guerreri, Stephanie; Mayson, Sarah Jo; Rimsky, Liza; New, Antonia S; Goodman, Marianne; Siever, Larry J
2014-01-01
Extreme emotional reactivity is a defining feature of borderline personality disorder, yet the neural-behavioral mechanisms underlying this affective instability are poorly understood. One possible contributor is diminished ability to engage the mechanism of emotional habituation. The authors tested this hypothesis by examining behavioral and neural correlates of habituation in borderline patients, healthy comparison subjects, and a psychopathological comparison group of patients with avoidant personality disorder. During fMRI scanning, borderline patients, healthy subjects, and avoidant personality disorder patients viewed novel and repeated pictures, providing valence ratings at each presentation. Statistical parametric maps of the contrasts of activation during repeated versus novel negative picture viewing were compared between groups. Psychophysiological interaction analysis was employed to examine functional connectivity differences between groups. Unlike healthy subjects, neither borderline nor avoidant personality disorder patients exhibited increased activity in the dorsal anterior cingulate cortex when viewing repeated versus novel pictures. This lack of an increase in dorsal anterior cingulate activity was associated with greater affective instability in borderline patients. In addition, borderline and avoidant patients exhibited smaller increases in insula-amygdala functional connectivity than healthy subjects and, unlike healthy subjects, did not show habituation in ratings of the emotional intensity of the images. Borderline patients differed from avoidant patients in insula-ventral anterior cingulate functional connectivity during habituation. Unlike healthy subjects, borderline patients fail to habituate to negative pictures, and they differ from both healthy subjects and avoidant patients in neural activity during habituation. A failure to effectively engage emotional habituation processes may contribute to affective instability in borderline
Deformed conformal and super-Poincare symmetries in the non- (anti-) commutative spaces
International Nuclear Information System (INIS)
Banerjee, R.; Lee, C.; Siwach, S.
2006-01-01
Generators of the super-Poincare algebra in the non- (anti-) commutative superspace are represented using appropriate higher derivative operators defined in this quantum superspace. Also discussed are the analogous representations of the conformal and superconformal symmetry generators in the deformed spaces. This construction is obtained by generalizing the recent work of Wess et al. on the Poincare generators in the θ-deformed Minkowski space, or by using the substitution rules we derived on the basis of the phase-space structures of non- (anti-) commutative-space variables. Even with the non-zero deformation parameters the algebras remain unchanged although the comultiplication rules are deformed. The transformation of the fields under deformed symmetry is also discussed. Our construction can be used for systematic development of field theories in the deformed spaces. (orig.)
Subjectivity, objectivity, and triangular space.
Britton, Ronald
2004-01-01
The author reviews his ideas on subjectivity, objectivity, and the third position in the psychoanalytic encounter, particularly in clinical work with borderline and narcissistic patients. Using the theories of Melanie Klein and Wilfred Bion as a basis, the author describes his concept of triangular space. A case presentation of a particular type of narcissistic patient illustrates the principles discussed.
Keuroghlian, Alex S; Palmer, Brian A; Choi-Kain, Lois W; Borba, Christina P C; Links, Paul S; Gunderson, John G
2016-08-01
The effect that attending a 1-day workshop on Good Psychiatric Management (GPM) had on attitudes about borderline personality disorder (BPD) was assessed among 297 clinicians. Change was recorded by comparing before and after scores on a 9-item survey previously developed to assess the effects of workshops on Systems Training for Emotional Predictability and Problem Solving (STEPPS). Participants reported decreased inclination to avoid borderline patients, dislike of borderline patients, and belief that BPD's prognosis is hopeless, as well as increased feeling of competence, belief that borderline patients have low self-esteem, feeling of being able to make a positive difference, and belief that effective psychotherapies exist. Less clinical experience was related to an increased feeling of competence and belief that borderline patients have low self-esteem. These findings were compared to those from the STEPPS workshop. This assessment demonstrates GPM's potential for training clinicians to meet population-wide needs related to borderline personality disorder.
On the role of oxytocin in borderline personality disorder.
Brüne, Martin
2016-09-01
Interpersonal dysfunction is central to borderline personality disorder (BPD). Recent research has focused on the role of oxytocin (OT) in BPD, particularly regarding associations of OT activity with symptoms, genetic polymorphisms of the oxytocin receptor coding gene (OXTR) in BPD, and experimental modification of interpersonal core problems of patients with BPD such as hypervigilance towards threat detection, mistrust, and non-verbal behaviour during social interaction by intranasal application of OT. A literature ('medline') review was performed using the keywords 'oxytocin' and 'borderline personality disorder'. Secondary literature on trauma and attachment in relation to OT was also considered relevant. Together, findings suggest that in BPD OT is associated with enhanced defensive mechanisms and avoidance behaviour. Moreover, gene-environment interaction concerning polymorphic variations of the OXTR gene and childhood adversity in BPD suggests that these genes convey developmental flexibility or 'differential susceptibility' to environmental contingencies, whereby BPD resides at the poor outcome end of the spectrum. In view of the conflicting literature, it needs to be studied carefully whether OT can serve as a therapeutic agent given adjunct to psychotherapy in BPD. More research about the role of OT is also required with regard to the prevention of the non-genetic intergenerational transmission of BPD. Clarifying the role of OT in BPD may also benefit from research in non-human animals targeting the interaction between early adversity and OT availability more directly. The study of oxytocin can contribute to the understanding of the neurobiology of borderline personality disorder. Oxytocin is critically involved in attachment security, and methylation of the oxytocin receptor may play a role in the epigenetic modulation of early adversity. The intranasal application of oxytocin may be a useful therapeutic adjunct to psychotherapy. Insecure attachment and
Borderline organization of personality in adulthood and adolescence
Directory of Open Access Journals (Sweden)
Alessandra Mura
2011-12-01
Full Text Available About the middle of the 1950 it was proposed the definition of borderline disorder to classify some of the clinical manifestations that they are not explained by neurosis and psychosis theory. The structural approach of Otto Kernberg has been particular relief to understand the borderline disorder. O. Kernberg has been suggested theborderline organization of personality, to outline a typical permanent pathological functioning underlying string of psychopathologic syndromes associated by a standard and specific structural pathology of Ego that it is based on mechanism of split. Recently there is a build-up the theory about adolescence disorders, where its diagnosis is complicated by lack structural identity and about symptoms that they show the effects of typical change of adolescence.
Schuppert, H. Marieke; Timmerman, Marieke E.; Bloo, Josephine; van Gemert, Tonny G.; Wiersema, Herman M.; Minderaa, Ruud B.; Emmelkamp, Paul M. G.; Nauta, Maaike H.
2012-01-01
Objective: To evaluate the effectiveness of Emotion Regulation Training (ERT), a 17-session weekly group training for adolescents with borderline personality disorder (BPD) symptoms. Method: One hundred nine adolescents with borderline traits (73% meeting the full criteria for BPD) were randomized
Schuppert, H.M.; Timmerman, M.E.; Bloo, J.; van Gemert, T.G.; Wiersema, H.M.; Minderaa, R.B.; Emmelkamp, P.M.G.; Nauta, M.H.
2012-01-01
Objective: To evaluate the effectiveness of Emotion Regulation Training (ERT), a 17-session weekly group training for adolescents with borderline personality disorder (BPD) symptoms. Method: One hundred nine adolescents with borderline traits (73% meeting the full criteria for BPD) were randomized
Risk of Local Recurrence of Benign and Borderline Phyllodes Tumors
DEFF Research Database (Denmark)
Borhani-Khomani, Kaveh; Talman, Maj-Lis Møller; Kroman, Niels
2016-01-01
women aged 18 years or older, operated from 1999 to 2014, with resected benign or borderline PTs. Information on age, size of primary tumor and recurrence, histological grade, surgical treatment, margin size, and local recurrence were collected from the national Danish Pathology Register. RESULTS.......1-192). We identified 30 local recurrences, i.e., a recurrence rate of 6.3 %. Twenty-three recurrences had similar or lower histological grading than the primary tumor, one primary benign PT recurred as a tumor with unclear diagnosis, and one primary borderline PT recurred as malignant. The number...
Emergent gravity in spaces of constant curvature
Energy Technology Data Exchange (ETDEWEB)
Alvarez, Orlando; Haddad, Matthew [Department of Physics, University of Miami,1320 Campo Sano Ave, Coral Gables, FL 33146 (United States)
2017-03-07
In physical theories where the energy (action) is localized near a submanifold of a constant curvature space, there is a universal expression for the energy (or the action). We derive a multipole expansion for the energy that has a finite number of terms, and depends on intrinsic geometric invariants of the submanifold and extrinsic invariants of the embedding of the submanifold. This is the second of a pair of articles in which we try to develop a theory of emergent gravity arising from the embedding of a submanifold into an ambient space equipped with a quantum field theory. Our theoretical method requires a generalization of a formula due to by Hermann Weyl. While the first paper discussed the framework in Euclidean (Minkowski) space, here we discuss how this framework generalizes to spaces of constant sectional curvature. We focus primarily on anti de Sitter space. We then discuss how such a theory can give rise to a cosmological constant and Planck mass that are within reasonable bounds of the experimental values.
Asymptotic structure of isolated systems
International Nuclear Information System (INIS)
Schmidt, B.G.
1979-01-01
The main methods to formulate asymptotic flatness conditions are introduced and motivation and basic ideas are emphasized. Any asymptotic flatness condition proposed up to now describes space-times which behave somehow like Minkowski space, and a very explicit exposition of the structure at infinity of Minkowski space is given. This structure is used to describe the asymptotic behaviour of fields on Minkowski space in a frame-dependent way. The definition of null infinity for curved space-time according to Penrose is given and attempts to define spacelike infinity are outlined. The conformal bundle approach to the formulation of asymptotic behaviour is described and its relation to null and spacelike infinity is given, as far as known. (Auth.)
Sara, a patient with borderline personality structure: A "crisis" management
Directory of Open Access Journals (Sweden)
Paola Marinelli
2015-05-01
Full Text Available In this article the author examines some significant passages of his treatment of a patient with borderline personality structure, with the intention of giving a formative contribution to the delicate issue of the search for congruence between theory and clinic operations. This reflection is therefore an opportunity to integrate these aspects. The individualization of the therapeutic relationship in the theoretical framework of group analysis allowed the emotional investment in the person of the therapist, which is useful in the construction of a meaningful relationship on the human, emotional and cognitive plane; a space within which it has become increasingly possible for Sara, share and process emotions, re-build, contact parts of the self frustrated and disappointed, perceive less and less the void and become less vulnerable, being able to pull over to the original trauma.
Crowell, Sheila E; Beauchaine, Theodore P; Linehan, Marsha M
2009-05-01
Over the past several decades, research has focused increasingly on developmental precursors to psychological disorders that were previously assumed to emerge only in adulthood. This change in focus follows from the recognition that complex transactions between biological vulnerabilities and psychosocial risk factors shape emotional and behavioral development beginning at conception. To date, however, empirical research on the development of borderline personality is extremely limited. Indeed, in the decade since M. M. Linehan initially proposed a biosocial model of the development of borderline personality disorder, there have been few attempts to test the model among at-risk youth. In this review, diverse literatures are reviewed that can inform understanding of the ontogenesis of borderline pathology, and testable hypotheses are proposed to guide future research with at-risk children and adolescents. One probable pathway is identified that leads to borderline personality disorder; it begins with early vulnerability, expressed initially as impulsivity and followed by heightened emotional sensitivity. These vulnerabilities are potentiated across development by environmental risk factors that give rise to more extreme emotional, behavioral, and cognitive dysregulation. (PsycINFO Database Record (c) 2009 APA, all rights reserved).
Inpatient management of borderline personality disorder at Helen ...
African Journals Online (AJOL)
Inpatient management of borderline personality disorder at Helen Joseph Hospital, Johannesburg. ... South African Journal of Psychiatry ... to the acute inpatient psychiatric assessment unit at the Helen Joseph Hospital, in Johannesburg, over ...
Zimmerman, Mark; Ellison, William; Morgan, Theresa A; Young, Diane; Chelminski, Iwona; Dalrymple, Kristy
2015-10-01
The morbidity associated with bipolar disorder is, in part, responsible for repeated calls for improved detection and recognition. No such commentary exists for the improved detection of borderline personality disorder. Clinical experience suggests that it is as disabling as bipolar disorder, but no study has directly compared the two disorders. To compare the levels of psychosocial morbidity in patients with bipolar disorder and borderline personality disorder. Patients were assessed with semi-structured interviews. We compared 307 patients with DSM-IV borderline personality disorder but without bipolar disorder and 236 patients with bipolar disorder but without borderline personality disorder. The patients with borderline personality disorder less frequently were college graduates, were diagnosed with more comorbid disorders, more frequently had a history of substance use disorder, reported more suicidal ideation at the time of the evaluation, more frequently had attempted suicide, reported poorer social functioning and were rated lower on the Global Assessment of Functioning. There was no difference between the two patient groups in history of admission to psychiatric hospital or time missed from work during the past 5 years. The level of psychosocial morbidity associated with borderline personality disorder was as great as (or greater than) that experienced by patients with bipolar disorder. From a public health perspective, efforts to improve the detection and treatment of borderline personality disorder might be as important as efforts to improve the recognition and treatment of bipolar disorder. © The Royal College of Psychiatrists 2015.
Beck, Emma; Sharp, Carla; Poulsen, Stig; Bo, Sune; Pedersen, Jesper; Simonsen, Erik
2017-01-01
Insecure attachment is a precursor and correlate of borderline personality disorder. According to the mentalization-based theory of borderline personality disorder, the presence of insecure attachment derails the development of the capacity to mentalize, potentially resulting in borderline pathology. While one prior study found support for this notion in adolescents, it neglected a focus on peer attachment. Separation from primary caregivers and formation of stronger bonds to peers are key developmental achievements during adolescence and peer attachment warrants attention as a separate concept. In a cross-sectional study, female outpatients (M age 15.78=, SD = 1.04) who fulfilled DSM-5 criteria for BPD ( N = 106) or met at least 4 BPD criteria ( N = 4) completed self-reports on attachment to parents and peers, mentalizing capacity (reflective function) and borderline personality features. Our findings suggest that in a simple mediational model, mentalizing capacity mediated the relation between attachment to peers and borderline features. In the case of attachment to parents, the mediational model was not significant. The current study is the first to evaluate this mediational model with parent and peer attachment as separate concepts and the first to do so in a sample of adolescents who meet full or sub-threshold criteria for borderline personality disorder. Findings incrementally support that mentalizing capacity and attachment insecurity, also in relation to peers, are important concepts in theoretical approaches to the development of borderline personality disorder in adolescence. Clinical implications are discussed.
Goodman, Marianne; Tomas, Irene Alvarez; Temes, Christina M; Fitzmaurice, Garrett M; Aguirre, Blaise A; Zanarini, Mary C
2017-08-01
Prevalence data on self-mutilation and suicide attempts for adolescent borderline personality disorder (BPD) are currently not available. The purpose of this paper was to determine the frequency and methods of two forms of physically self-destructive acts (i.e. self-mutilation and suicide attempts) reported by adolescent borderline inpatients in one of the largest samples to date and to compare these results with a similarly diagnosed and assessed group of adult borderline inpatients. A total of 104 adolescent inpatients with BPD and 290 adult inpatients with BPD were interviewed about their lifetime history of physically self-destructive acts. The overall rates of self-mutilation (about 90%) and suicide attempts (about 75%) were similar during index admission for both adolescent and adult borderline patients. However, adolescents reported significantly higher rates of extreme levels of lifetime self-mutilation (e.g. >25 and >50 episodes) and cutting in particular, as compared with adult BPD. In contrast, borderline adults were significantly more likely to report a history of numerous (five or more) suicide attempts than adolescents with BPD. Self-mutilation and suicide attempts among adolescent borderline patients are prevalent and serious. Taken together, these results suggest that extreme levels of self-mutilation distinguish adolescent BPD from adults with BPD. Copyright © 2017 John Wiley & Sons, Ltd. Copyright © 2017 John Wiley & Sons, Ltd.
[Transference Focused Psychotherapy for Borderline-Adolescents in a Day Clinic Treatment Program].
Krischer, Maya; Ponton-Rodriguez, Tamara; Gooran, Ghazal Rostami; Bender, Stephan
2017-07-01
Transference Focused Psychotherapy for Borderline-Adolescents in a Day Clinic Treatment Program This paper focuses on the concept of transference focused psychotherapy (TFP) modified for juvenile borderline patients. Adolescents with borderline developmental personality disorder (bpd) have an essential deficit in their personality structure that leads to oscillations in their self-esteem and in a "split" perception of the world. They suffer from a variety of symptoms and severe impairments on their own and their families' quality of life. Their fragmented perception of themselves and others make relationships almost unbearable for them. Relationships are mostly marked by severe anxiety of resentment and rejection. For these patients this causes intolerable trouble at school where every day conflicts take place. Self-mutilation and suicidal thoughts often seem the only way out. By now, there is an agreement that an early specialized assessment and treatment is necessary in order to stop the typical consequences of their self-mutilative and dysfunctional behavior. Still, in contrast to adult age, empirical evidence is missing which proves the effectiveness of treating adolescent borderline patients. In this paper we present a research project on the effectiveness of transference focused psychotherapy with adolescent borderline patients (TFP-A) in a day clinic setting, combining TFP with group skills training as known from dialectic behavior therapy (DBT). Furthermore, we give first results on analyzing the effectiveness of our day clinic treatment program based on TFP-A, focusing on improving core symptoms such as affective problems, aggressive behavior against self and others and interpersonal problems.
Rinne, Thomas; van den Brink, Wim; Wouters, Luuk; van Dyck, Richard
2002-01-01
Objective: Selective serotonin reuptake inhibitors (SSRIs) are recommended for treatment of affect lability, impulsivity, and aggression in patients with borderline personality disorder. This recommendation is based on positive findings in at least 10 open studies and one small double-blind study of
Yank-Mills fields and hypersurface twistors
International Nuclear Information System (INIS)
Fioravanti, M.A.
1989-01-01
The author establishes a one-to-one correspondence between (not necessarily self-dual) solutions of the non-abelian source-free Yang-Mills equations on Minkowski space, and pairs of cohomology classes [γ], [φ]. If O(n) is the sheaf of holomorphic sections of the n th tensor power of the hyperplane line bundle over C P 1 , and g is the Lie algebra of the gauge group, [γ] var-epsilon H CR 1 (PN circumflex,g) and defines a deformation C-R(γ) of the canonical C-R structure on a principal bundle over PN circumflex, the subset of null twistor space PN, representing unscaled null geodesics in Minkowski space. [φ] var-epsilon H CR(γ) 1 (PN,O(-4) direct-product g). The spin-bundle over Minkowski space is used in the construction. This bundle is foliated by a congruence of lines; each of these lines projects into a null geodesic in Minkowski space, and corresponds to a point in N. The restriction S of the spin-bundle to a spacelike hyperplane in Minkowski space is transversal to this foliation, and PN is identified with S. [γ] encodes certain components of the Yang-Mills connection on S, and [φ] encodes the self-dual part of the field on S. They give initial values for a system of evolution equations in the spin-bundle. This system is composed by four first order ordinary differential equations along the lines in the foliation of the spin-bundle, with some of the right-hand sides given by integrals on the fiber over a point in Minkowski space, and a partial differential equation on this fiber. The evolution equations simplify largely in the case of an abelian gauge group. In the case of anti-self-dual fields, the system reduces to two ordinary differential equations along the lines in the foliation of the spin-bundle, and the differential equation on the fiber over each point in Minkowski space. He studies the modifications in the construction when sources are present
Quantum relativity theory and quantum space-time
International Nuclear Information System (INIS)
Banai, M.
1984-01-01
A quantum relativity theory formulated in terms of Davis' quantum relativity principle is outlined. The first task in this theory as in classical relativity theory is to model space-time, the arena of natural processes. It is shown that the quantum space-time models of Banai introduced in another paper is formulated in terms of Davis's quantum relativity. The recently proposed classical relativistic quantum theory of Prugovecki and his corresponding classical relativistic quantum model of space-time open the way to introduce, in a consistent way, the quantum space-time model (the quantum substitute of Minkowski space) of Banai proposed in the paper mentioned. The goal of quantum mechanics of quantum relativistic particles living in this model of space-time is to predict the rest mass system properties of classically relativistic (massive) quantum particles (''elementary particles''). The main new aspect of this quantum mechanics is that it provides a true mass eigenvalue problem, and that the excited mass states of quantum relativistic particles can be interpreted as elementary particles. The question of field theory over quantum relativistic model of space-time is also discussed. Finally it is suggested that ''quarks'' should be considered as quantum relativistic particles. (author)
Nouwens, Peter J G; Lucas, Rosanne; Smulders, Nienke B M; Embregts, Petri J C M; van Nieuwenhuizen, Chijs
2017-07-17
Persons with mild intellectual disability or borderline intellectual functioning are often studied as a single group with similar characteristics. However, there are indications that differences exist within this population. Therefore, the aim of this study was to identify classes of persons with mild intellectual disability or borderline intellectual functioning and to examine whether these classes are related to individual and/or environmental characteristics. Latent class analysis was performed using file data of 250 eligible participants with a mean age of 26.1 (SD 13.8, range 3-70) years. Five distinct classes of persons with mild intellectual disability or borderline intellectual functioning were found. These classes significantly differed in individual and environmental characteristics. For example, persons with a mild intellectual disability experienced fewer problems than those with borderline intellectual disability. The identification of five classes implies that a differentiated approach is required towards persons with mild intellectual disability or borderline intellectual functioning.
Hecht, Kathryn F; Cicchetti, Dante; Rogosch, Fred A; Crick, Nicki R
2014-08-01
Child maltreatment has been established as a risk factor for borderline personality disorder (BPD), yet few studies consider how maltreatment influences the development of BPD features through childhood and adolescence. Subtype, developmental timing, and chronicity of child maltreatment were examined as factors in the development of borderline personality features in childhood. Children (M age = 11.30, SD = 0.94), including 314 maltreated and 285 nonmaltreated children from comparable low socioeconomic backgrounds, provided self-reports of developmentally salient borderline personality traits. Maltreated children had higher overall borderline feature scores, had higher scores on each individual subscale, and were more likely to be identified as at high risk for development of BPD through raised scores on all four subscales. Chronicity of maltreatment predicted higher overall borderline feature scores, and patterns of onset and recency of maltreatment significantly predicted whether a participant would meet criteria for the high-risk group. Implications of findings and recommendations for intervention are discussed.
Hecht, Kathryn F.; Cicchetti, Dante; Rogosch, Fred A.; Crick, Nicki
2014-01-01
Child maltreatment has been established as a risk factor for borderline personality disorder (BPD), yet few studies consider how maltreatment influences the development of BPD features through childhood and adolescence. Subtype, developmental timing and chronicity of child maltreatment were examined as factors in the development of borderline personality features in childhood. Children (M age = 11.30, SD = 0.94), including 314 maltreated and 285 nonmaltreated children from comparable low socioeconomic backgrounds, provided self-reports of developmentally salient borderline personality traits. Maltreated children had higher overall borderline feature scores, higher scores on each individual subscale and were more likely to be identified as at high risk for development of BPD through raised scores on all 4 subscales. Chronicity of maltreatment predicted higher overall borderline feature scores and patterns of onset and recency of maltreatment significantly predicted whether a participant would meet criteria for the high-risk group. Implications of findings and recommendations for intervention are discussed. PMID:25047300
S-100 protein in the diagnosis of tuberculoid borderline tuberculoidleprosy
International Nuclear Information System (INIS)
Khan, A.R.
1998-01-01
A definitive diagnosis of tuberculoid and borderline tuberculoid leprosyis based on a demonstration of either acid-fast bacilli or nerve elementswithin the granulomas. On routine hematoxylin and eosin stains, the nervefibers are not easily identifiable. In this study, we used S-100 protein tohighlight the nerve elements and to count their numbers in leprosy andnon-leprosy granulomas. Skin biopsy specimens from 15 cases oftuberculoid/borderline tuberculoid leprosy and 14 cases belonging to othergranulomatous disease of the skin were stained with S-100 protein. Thesurface area of all the biopsies was calculated and the numbers of nervebundles stained with S-100 protein were counted in each specimen. The nervebundles were 15 per cm2 in leprosy cases, and 9.2 per cm2 in non-leprosycases. In addition, the leprosy cases showed longer nerve twigs that wereperpendicularly oriented to the skin surface. Immunostaining with S-100facilitated detection of nerve elements in tuberculoid/borderline tuberculoidleprosy. Also, an increased number of nerve elements were found in leprosygranulomas when compared with non-leprosy granulomas (P=<0.05). (author)
Crowell, Sheila E.; Beauchaine, Theodore P.; Linehan, Marsha M.
2009-01-01
Over the past several decades, research has focused increasingly on developmental precursors to psychological disorders that were previously assumed to emerge only in adulthood. This change in focus follows from the recognition that complex transactions between biological vulnerabilities and psychosocial risk factors shape emotional and behavioral development beginning at conception. To date, however, empirical research on the development of borderline personality is extremely limited. Indeed, in the decade since M. M. Linehan initially proposed a biosocial model of the development of borderline personality disorder, there have been few attempts to test the model among at-risk youth. In this review, diverse literatures are reviewed that can inform understanding of the ontogenesis of borderline pathology, and testable hypotheses are proposed to guide future research with at-risk children and adolescents. One probable pathway is identified that leads to borderline personality disorder; it begins with early vulnerability, expressed initially as impulsivity and followed by heightened emotional sensitivity. These vulnerabilities are potentiated across development by environmental risk factors that give rise to more extreme emotional, behavioral, and cognitive dysregulation. PMID:19379027
Gestalt psychotherapy in the outpatient treatment of borderline ...
African Journals Online (AJOL)
): ... psychotic reactions as well as self-destructive behaviour could also be experienced. ... level graduate program, moved out of her parents' home and bought her own ... effectiveness of cognitive behavior therapy for borderline personality ...
International Nuclear Information System (INIS)
Cazenave, T.; Shatah, J.; Tahvildar-Zadeh, A.S.
1998-01-01
In this article we explore some of the connections between the theories of Yang-Mills fields, wave maps, and harmonic maps. It has been shown that the search for similarity solutions of wave maps leads to harmonic maps of the hyperbolic space. On the other hand, Glassey and Strauss have shown that the equations for an SO(3)-equivariant Yang-Mills connection on the Minkowski space R 3,1 with gauge group SU(2) reduce to a certain nonlinear wave equation, which we can now identify as a wave map on R 1,1 . More generally, we will here show the reduction under equivariance of a Yang-Mills system on the Minkowski space R n,1 to a wave map system on R n-2,1 in the specific case of SO(n) bundles with SO(n) symmetry. We then prove for odd n the existence of equivariant harmonic maps from the hyperbolic space H n that are smooth at the ideal boundary of H n , thus establishing the existence of similarity solutions for equivariant wave maps and Yang-Mills fields. As a consequence we show that for n ≥ 7, it is possible to have a wave map into a negatively curved target manifold that develops from smooth initial data and blows up in finite time, in sharp contrast to the elliptic case of harmonic maps. Finally we show how these singular solutions can be lifted to one dimension higher to produce singular travelling waves. (orig.)
Reynolds, Caleb J; Tragesser, Sarah L
2018-04-03
To determine whether core features of borderline personality disorder are associated with increased rates of being on disability benefits due to chronic pain conditions. A total of 147 patients currently in treatment for chronic pain at a multimodal chronic pain clinic. We tested for a concurrent relationship between borderline personality disorder features and employment status using self-report measures. Borderline personality disorder features were associated with increased likelihood of currently being on disability due to pain conditions (odds ratio [OR] = 23.13, 95% confidence interval [CI] = 1.68-318.73), on disability due to other conditions (OR = 33.65, 95% CI = 2.15-526.13), and unemployed (OR = 20.14, 95% CI = 1.38-294.93), even while controlling for pain severity and interference, depression, and trait anxiety. A follow-up analysis revealed that these associations were due to the negative relationships facet of borderline personality disorder features. Borderline personality disorder features, particularly negative relationships, are associated with increased rates of pain disability, general disability, and unemployment in a chronic pain sample. Future research should examine mechanisms by which the maladaptive interpersonal behaviors and cognitions of borderline personality disorder might result in worse long-term employment outcomes of chronic pain.
van der Meere, Jaap; van der Meer, Dirk-Jan; Borger, Norbert; Pirila, Silja
2008-01-01
This study was designed to investigate attention and impulse control in 21 boys with dual diagnoses of conduct disorder and borderline intelligence and in 19 boys with borderline intelligence only. Using the Continuous Performance Test A-not-X, it appeared that children with the dual diagnosis made
Classical and semi-classical solutions of the Yang--Mills theory
International Nuclear Information System (INIS)
Jackiw, R.; Nohl, C.; Rebbi, C.
1977-12-01
This review summarizes what is known at present about classical solutions to Yang-Mills theory both in Euclidean and Minkowski space. The quantal meaning of these solutions is also discussed. Solutions in Euclidean space expose multiple vacua and tunnelling of the quantum theory. Those in Minkowski space-time provide a semi-classical spectrum for a conformal generator
The Nonlinear Field Space Theory
Energy Technology Data Exchange (ETDEWEB)
Mielczarek, Jakub, E-mail: jakub.mielczarek@uj.edu.pl [Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348 Kraków (Poland); Trześniewski, Tomasz, E-mail: tbwbt@ift.uni.wroc.pl [Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348 Kraków (Poland); Institute for Theoretical Physics, University of Wrocław, pl. Borna 9, 50-204 Wrocław (Poland)
2016-08-10
In recent years the idea that not only the configuration space of particles, i.e. spacetime, but also the corresponding momentum space may have nontrivial geometry has attracted significant attention, especially in the context of quantum gravity. The aim of this letter is to extend this concept to the domain of field theories, by introducing field spaces (i.e. phase spaces of field values) that are not affine spaces. After discussing the motivation and general aspects of our approach we present a detailed analysis of the prototype (quantum) Nonlinear Field Space Theory of a scalar field on the Minkowski background. We show that the nonlinear structure of a field space leads to numerous interesting predictions, including: non-locality, generalization of the uncertainty relations, algebra deformations, constraining of the maximal occupation number, shifting of the vacuum energy and renormalization of the charge and speed of propagation of field excitations. Furthermore, a compact field space is a natural way to implement the “Principle of finiteness” of physical theories, which once motivated the Born–Infeld theory. Thus the presented framework has a variety of potential applications in the theories of fundamental interactions (e.g. quantum gravity), as well as in condensed matter physics (e.g. continuous spin chains), and can shed new light on the issue of divergences in quantum field theories.
The Nonlinear Field Space Theory
International Nuclear Information System (INIS)
Mielczarek, Jakub; Trześniewski, Tomasz
2016-01-01
In recent years the idea that not only the configuration space of particles, i.e. spacetime, but also the corresponding momentum space may have nontrivial geometry has attracted significant attention, especially in the context of quantum gravity. The aim of this letter is to extend this concept to the domain of field theories, by introducing field spaces (i.e. phase spaces of field values) that are not affine spaces. After discussing the motivation and general aspects of our approach we present a detailed analysis of the prototype (quantum) Nonlinear Field Space Theory of a scalar field on the Minkowski background. We show that the nonlinear structure of a field space leads to numerous interesting predictions, including: non-locality, generalization of the uncertainty relations, algebra deformations, constraining of the maximal occupation number, shifting of the vacuum energy and renormalization of the charge and speed of propagation of field excitations. Furthermore, a compact field space is a natural way to implement the “Principle of finiteness” of physical theories, which once motivated the Born–Infeld theory. Thus the presented framework has a variety of potential applications in the theories of fundamental interactions (e.g. quantum gravity), as well as in condensed matter physics (e.g. continuous spin chains), and can shed new light on the issue of divergences in quantum field theories.
Euclidean and Minkowski space formulations of linearized gravitational potential in various gauges
International Nuclear Information System (INIS)
Lim, S.C.
1979-01-01
We show that there exists a unitary map connecting linearized theories of gravitational potential in vacuum, formulated in various covariant gauges and noncovariant radiation gauge. The free Euclidean gravitational potentials in covariant gauges satisfy the Markov property of Nelson, but are nonreflexive. For the noncovariant radiation gauge, the corresponding Euclidean field is reflexive but it only satisfies the Markov property with respect to special half spaces. The Feynman--Kac--Nelson formula is established for the Euclidean gravitational potential in radiation gauge
Directory of Open Access Journals (Sweden)
Morten eKaletsch
2014-11-01
Full Text Available Much recent research has shown that personality disorders are associated with an altered emotion perception. Whereas most of this research was conducted with stimuli such as faces, the present study examined possible differences in the perception of emotions expressed via body language and body movements. 30 patients with borderline personality disorder and 30 non-patients observed video scenes of emotional human interactions conveyed by point–light displays, rated the depicted valence, and judged their confidence in this rating. Patients with borderline personality disorder showed no altered emotion perception (i.e., no biased perception in either a negative or a positive direction. They did not perceive and evaluate depicted emotions as being more extreme than healthy controls. However, patients with borderline personality disorder showed less confidence in their perception of depicted emotions, especially when these were difficult to identify. The findings extend insights on altered emotion perception in persons with borderline personality disorder to include the field of body movements.
Risk of borderline ovarian tumors among women with benign ovarian tumors
DEFF Research Database (Denmark)
Guleria, Sonia; Jensen, Allan; Kjær, Susanne K
2018-01-01
tumors among women with a benign ovarian tumor. METHODS: This nationwide cohort study included all Danish women diagnosed with a benign ovarian tumor (n=139,466) during 1978-2012. The cohort was linked to the Danish Pathology Data Bank and standardized incidence ratios (SIR) with 95% confidence intervals...... (CI) were calculated. RESULTS: Women with benign ovarian tumors had increased risks for subsequent borderline ovarian tumors (SIR 1.62, 95% CI 1.43-1.82), and this applied to both serous (SIR 1.69, 95% CI 1.39-2.03) and mucinous (SIR 1.75, 95% CI 1.45-2.10) histotypes of borderline ovarian tumors....... The risk for borderline ovarian tumors was primarily increased for women diagnosed with a benign ovarian tumor before 40years of age. The risk remained increased up to 9years after a benign ovarian tumor diagnosis. Finally, the associations did not change markedly when analyzed for the different histotypes...
Self-Esteem and Anger in Borderline Patients With Self-Injury Behavior.
Almeida, Carla Maria; Horta, Maria Purificação
2018-04-01
Anger and low self-esteem characterize borderline individuals, yet little is known about their role and impact in the presence or absence of self-injury behavior. The present study aimed to investigate the impact of anger and self-esteem in borderline patients and whether these variables distinguish these patients with and without self-injury. Patients were recruited from a psychiatric service and were evaluated for self-esteem and anger. Additionally, impulsivity and symptoms were assessed. Two groups were compared, one with self-injurious behavior (n = 18) and another one without it (n = 23). Those who injure themselves seem to have a lower self-esteem (p < 0.001), yet the strengthening of self-esteem seems to have different outcomes, according to the presence or absence of self-injury. Anger and self-esteem seem to influence the severity of diagnosis, but only in patients who self-injure. Anger and self-esteem may influence borderline patients differently according to the presence or absence of self-injury.
Geometrothermodynamics for black holes and de Sitter space
Kurihara, Yoshimasa
2018-02-01
A general method to extract thermodynamic quantities from solutions of the Einstein equation is developed. In 1994, Wald established that the entropy of a black hole could be identified as a Noether charge associated with a Killing vector of a global space-time (pseudo-Riemann) manifold. We reconstruct Wald's method using geometrical language, e.g., via differential forms defined on the local space-time (Minkowski) manifold. Concurrently, the abstract thermodynamics are also reconstructed using geometrical terminology, which is parallel to general relativity. The correspondence between the thermodynamics and general relativity can be seen clearly by comparing the two expressions. This comparison requires a modification of Wald's method. The new method is applied to Schwarzschild, Kerr, and Kerr-Newman black holes and de Sitter space. The results are consistent with previous results obtained using various independent methods. This strongly supports the validity of the area theorem for black holes.
Families of vector-like deformations of relativistic quantum phase spaces, twists and symmetries
Energy Technology Data Exchange (ETDEWEB)
Meljanac, Daniel [Ruder Boskovic Institute, Division of Materials Physics, Zagreb (Croatia); Meljanac, Stjepan; Pikutic, Danijel [Ruder Boskovic Institute, Division of Theoretical Physics, Zagreb (Croatia)
2017-12-15
Families of vector-like deformed relativistic quantum phase spaces and corresponding realizations are analyzed. A method for a general construction of the star product is presented. The corresponding twist, expressed in terms of phase space coordinates, in the Hopf algebroid sense is presented. General linear realizations are considered and corresponding twists, in terms of momenta and Poincare-Weyl generators or gl(n) generators are constructed and R-matrix is discussed. A classification of linear realizations leading to vector-like deformed phase spaces is given. There are three types of spaces: (i) commutative spaces, (ii) κ-Minkowski spaces and (iii) κ-Snyder spaces. The corresponding star products are (i) associative and commutative (but non-local), (ii) associative and non-commutative and (iii) non-associative and non-commutative, respectively. Twisted symmetry algebras are considered. Transposed twists and left-right dual algebras are presented. Finally, some physical applications are discussed. (orig.)
Families of vector-like deformations of relativistic quantum phase spaces, twists and symmetries
International Nuclear Information System (INIS)
Meljanac, Daniel; Meljanac, Stjepan; Pikutic, Danijel
2017-01-01
Families of vector-like deformed relativistic quantum phase spaces and corresponding realizations are analyzed. A method for a general construction of the star product is presented. The corresponding twist, expressed in terms of phase space coordinates, in the Hopf algebroid sense is presented. General linear realizations are considered and corresponding twists, in terms of momenta and Poincare-Weyl generators or gl(n) generators are constructed and R-matrix is discussed. A classification of linear realizations leading to vector-like deformed phase spaces is given. There are three types of spaces: (i) commutative spaces, (ii) κ-Minkowski spaces and (iii) κ-Snyder spaces. The corresponding star products are (i) associative and commutative (but non-local), (ii) associative and non-commutative and (iii) non-associative and non-commutative, respectively. Twisted symmetry algebras are considered. Transposed twists and left-right dual algebras are presented. Finally, some physical applications are discussed. (orig.)
Families of vector-like deformations of relativistic quantum phase spaces, twists and symmetries
Meljanac, Daniel; Meljanac, Stjepan; Pikutić, Danijel
2017-12-01
Families of vector-like deformed relativistic quantum phase spaces and corresponding realizations are analyzed. A method for a general construction of the star product is presented. The corresponding twist, expressed in terms of phase space coordinates, in the Hopf algebroid sense is presented. General linear realizations are considered and corresponding twists, in terms of momenta and Poincaré-Weyl generators or gl(n) generators are constructed and R-matrix is discussed. A classification of linear realizations leading to vector-like deformed phase spaces is given. There are three types of spaces: (i) commutative spaces, (ii) κ -Minkowski spaces and (iii) κ -Snyder spaces. The corresponding star products are (i) associative and commutative (but non-local), (ii) associative and non-commutative and (iii) non-associative and non-commutative, respectively. Twisted symmetry algebras are considered. Transposed twists and left-right dual algebras are presented. Finally, some physical applications are discussed.
Nelson, David A; Coyne, Sarah M; Swanson, Savannah M; Hart, Craig H; Olsen, Joseph A
2014-08-01
Crick, Murray-Close, and Woods (2005) encouraged the study of relational aggression as a developmental precursor to borderline personality features in children and adolescents. A longitudinal study is needed to more fully explore this association, to contrast potential associations with physical aggression, and to assess generalizability across various cultural contexts. In addition, parenting is of particular interest in the prediction of aggression or borderline personality disorder. Early aggression and parenting experiences may differ in their long-term prediction of aggression or borderline features, which may have important implications for early intervention. The currrent study incorporated a longitudinal sample of preschool children (84 boys, 84 girls) living in intact, two-parent biological households in Voronezh, Russia. Teachers provided ratings of children's relational and physical aggression in preschool. Mothers and fathers also self-reported their engagement in authoritative, authoritarian, permissive, and psychological controlling forms of parenting with their preschooler. A decade later, 70.8% of the original child participants consented to a follow-up study in which they completed self-reports of relational and physical aggression and borderline personality features. The multivariate results of this study showed that preschool relational aggression in girls predicted adolescent relational aggression. Preschool aversive parenting (i.e., authoritarian, permissive, and psychologically controlling forms) significantly predicted aggression and borderline features in adolescent females. For adolescent males, preschool authoritative parenting served as a protective factor against aggression and borderline features, whereas authoritarian parenting was a risk factor for later aggression.
Quantum fluctuations and spontaneous compactification of eleven-dimensional gravity
International Nuclear Information System (INIS)
Nguen Van Hieu.
1985-01-01
The reduction of the eleven-dimensional pure gravity to the field theory in the four-dimensional Minkowski space-time by means of the spontaneous compactification of the extra dimensions is investigated. The contribution of the quantum fluctuations of the eleven-dimen-- sonal second rank symmetric tensor field to the curvatures of the space-time and the compactified space of the extra dimensions are calculated in the one-loop approximation. It is shown that there exist the values of the cosmological constant for which tachions are absent. As a result, self-consistent quantum field theory is obtained in spontaneous compactified Minkowski space M 4 xS 7 ,is where M 4 is Minkowski space-time, and S 7 is seven-dimensional sphere
Psychopathology in offspring of mothers with borderline personality disorder: a pilot study.
Weiss, M; Zelkowitz, P; Feldman, R B; Vogel, J; Heyman, M; Paris, J
1996-06-01
Children of mothers with borderline personality disorder (BPD) were hypothesized to be at greater risk for psychopathology, particularly impulse spectrum disorders, than children of mothers with other personality disorders. Twenty-one index children were compared with 23 children of mothers with a nonborderline personality disorder. Diagnoses were obtained using the Kiddie Schedule for Affective Disorders and Schizophrenia-Episodic Version (KSADS-E) and the Child Diagnostic Interview for BPD (CDIB), and functioning was rated with the Child Global Assessment Schedule (CGAS). Physical, sexual, and verbal abuse, as well as family violence and placements, were also assessed. The children of the borderline mothers, as compared with controls, had more psychiatric diagnoses, more impulse control disorders, a higher frequency of child BPD, and lower CGAS scores. There were no differences between the groups for trauma. The offspring of borderline mothers are at high risk for psychopathology.
Feliu-Soler, Albert; Pascual, Juan Carlos; Elices, Matilde; Martín-Blanco, Ana; Carmona, Cristina; Cebolla, Ausiàs; Simón, Vicente; Soler, Joaquim
2017-01-01
The aim of this randomized pilot study is to investigate the effects of a short training programme in loving-kindness and compassion meditation (LKM/CM) in patients with borderline personality disorder. Patients were allocated to LKM/CM or mindfulness continuation training (control group). Patients in the LKM/CM group showed greater changes in Acceptance compared with the control group. Remarkable changes in borderline symptomatology, self-criticism and self-kindness were also observed in the LKM/CM group. Mechanistic explanations and therapeutic implications of the findings are discussed. Three weeks of loving-kindness and compassion meditations increased acceptance of the present-moment experience in patients with borderline personality disorder. Significant improvements in the severity of borderline symptoms, self-criticism, mindfulness, acceptance and self-kindness were observed after the LKM/CM intervention. LKM/CM is a promising complementary strategy for inclusion in mindfulness-based interventions and Dialectical Behavioural Therapy for treating core symptoms in borderline personality disorder. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.
Nagarajan, Mahesh B.; De, Titas; Lochmüller, Eva-Maria; Eckstein, Felix; Wismüller, Axel
2017-01-01
The ability of Anisotropic Minkowski Functionals (AMFs) to capture local anisotropy while evaluating topological properties of the underlying gray-level structures has been previously demonstrated. We evaluate the ability of this approach to characterize local structure properties of trabecular bone micro-architecture in ex vivo proximal femur specimens, as visualized on multi-detector CT, for purposes of biomechanical bone strength prediction. To this end, volumetric AMFs were computed locally for each voxel of volumes of interest (VOI) extracted from the femoral head of 146 specimens. The local anisotropy captured by such AMFs was quantified using a fractional anisotropy measure; the magnitude and direction of anisotropy at every pixel was stored in histograms that served as a feature vectors that characterized the VOIs. A linear multi-regression analysis algorithm was used to predict the failure load (FL) from the feature sets; the predicted FL was compared to the true FL determined through biomechanical testing. The prediction performance was measured by the root mean square error (RMSE) for each feature set. The best prediction performance was obtained from the fractional anisotropy histogram of AMF Euler Characteristic (RMSE = 1.01 ± 0.13), which was significantly better than MDCT-derived mean BMD (RMSE = 1.12 ± 0.16, p<0.05). We conclude that such anisotropic Minkowski Functionals can capture valuable information regarding regional trabecular bone quality and contribute to improved bone strength prediction, which is important for improving the clinical assessment of osteoporotic fracture risk. PMID:29170581
Schuppert, H. Marieke; Timmerman, Marieke E.; Bloo, Josephine; van Gemert, Tonny G.; Wiersema, Herman M.; Minderaa, Ruud B.; Emmelkamp, Paul M. G.; Nauta, Maaike H.
2012-01-01
Objective: To evaluate the effectiveness of Emotion Regulation Training (ERT), a 17-session weekly group training for adolescents with borderline personality disorder (BPD) symptoms. Method: One hundred nine adolescents with borderline traits (73% meeting the full criteria for BPD) were randomized to treatment as usual only (TAU) or ERT + TAU.…
Zeta-function regularization approach to finite temperature effects in Kaluza-Klein space-times
International Nuclear Information System (INIS)
Bytsenko, A.A.; Vanzo, L.; Zerbini, S.
1992-01-01
In the framework of heat-kernel approach to zeta-function regularization, in this paper the one-loop effective potential at finite temperature for scalar and spinor fields on Kaluza-Klein space-time of the form M p x M c n , where M p is p-dimensional Minkowski space-time is evaluated. In particular, when the compact manifold is M c n = H n /Γ, the Selberg tracer formula associated with discrete torsion-free group Γ of the n-dimensional Lobachevsky space H n is used. An explicit representation for the thermodynamic potential valid for arbitrary temperature is found. As a result a complete high temperature expansion is presented and the roles of zero modes and topological contributions is discussed
Quantum volume and length fluctuations in a midi-superspace model of Minkowski space
International Nuclear Information System (INIS)
Adelman, Jeremy; Hinterleitner, Franz; Major, Seth
2015-01-01
In a (1+1)-dimensional midi-superspace model for gravitational plane waves, a flat space–time condition is imposed with constraints derived from null Killing vectors. Solutions to a straightforward regularization of these constraints have diverging length and volume expectation values. Physically acceptable solutions in the kinematic Hilbert space are obtained from the original constraint by multiplying with a power of the volume operator and by a similar modification of the Hamiltonian constraint, which is used in a regularization of the constraints. The solutions of the modified Killing constraint have finite expectation values of geometric quantities. Further, the expectation value of the original Killing constraint vanishes, but its moment is non-vanishing. As the power of the volume grows, the moment of the original constraint grows, while the moments of volume and length both decrease. Thus, these states provide possible kinematic states for flat space, with fluctuations. As a consequence of the regularization of operators, the quantum uncertainty relations between geometric quantities such as length and its conjugate momentum do not reflect naive expectations from the classical Poisson bracket relations. (paper)
Family Study of Borderline Personality Disorder and Its Sectors of Psychopathology
Gunderson, John G.; Zanarini, Mary C.; Choi-Kain, Lois W.; Mitchell, Karen S.; Jang, Kerry L.; Hudson, James I.
2011-01-01
Context The familiality of borderline personality disorder (BPD) and its sectors of psychopathology are incompletely understood. Objectives To assess the familial aggregation of BPD and its 4 major sectors (affective, interpersonal, behavioral, and cognitive) and test whether the relationship of the familial and nonfamilial associations among these sectors can be accounted for by a latent BPD construct. Design Family study, with direct interviews of probands and relatives. Setting A psychiatric hospital (McLean Hospital) and the Boston-area community. Participants A total of 368 probands (132 with BPD, 134 without BPD, and 102 with major depressive disorder) and 885 siblings and parents of probands. Main Assessments The Diagnostic Interview for DSM-IV Personality Disorders and the Revised Diagnostic Interview for Borderlines (DIB-R) were used to assess borderline psychopathology, and the Structured Clinical Interview for DSM-IV was used to assess major depressive disorder. Results Borderline personality disorder meeting both DSM-IV and DIB-R criteria showed substantial familial aggregation for BPD in individuals with a family member with BPD vs those without a family member with BPD, using proband-relative pairs (risk ratio, 2.9; 95% confidence interval, 1.5–5.5) as well as using all pairs of family members (3.9; 1.7–9.0). All 4 sectors of BPD psychopathology aggregated significantly in families, using both DSM-IV and DIB-R definitions (correlation of traits among all pairs of family members ranged from 0.07 to 0.27), with the affective and interpersonal sectors showing the highest levels; however, the level of familial aggregation of BPD was higher than that of the individual sectors. The relationship among the sectors was best explained by a common pathway model in which the sectors represent manifestations of a latent BPD construct. Conclusions Familial factors contribute to BPD and its sectors of psychopathology. Borderline personality disorder may arise
Structure of potentials with N Higgs doublets
International Nuclear Information System (INIS)
Nishi, C. C.
2007-01-01
Extensions of the standard model with N Higgs doublets are simple extensions presenting a rich mathematical structure. An underlying Minkowski structure emerges from the study of both variable space and parameter space. The former can be completely parametrized in terms of two future lightlike Minkowski vectors with spatial parts forming an angle whose cosine is -(N-1) -1 . For the parameter space, the Minkowski parametrization enables one to impose sufficient conditions for bounded below potentials, characterize certain classes of local minima, and distinguish charge breaking vacua from neutral vacua. A particular class of neutral minima presents a degenerate mass spectrum for the physical charged Higgs bosons
Zanarini, Mary C; Conkey, Lindsey C; Temes, Christina M; Fitzmaurice, Garrett M
2017-07-11
To determine if internet-based psychoeducation for borderline personality disorder is effective in reducing symptom severity and improving psychosocial functioning. Eighty women who met DSM-IV criteria for borderline personality disorder were randomly assigned either to the internet-based psychoeducation treatment group (n = 40) or to the internet-based control group with no psychoeducation (n = 40). Recruitment was conducted from July 2013 to March 2015. Subjects participated in 15 assessment periods that were divided into an acute phase (weeks 1-12) and a maintenance phase (months 6, 9, and 12). Main outcomes were assessed using the Zanarini Rating Scale for Borderline Personality Disorder. In the acute phase, women in the treatment group were found to have a significant decline in their scores on all 10 outcomes studied, while women in the control group had a significant decline on 7 of these outcomes. Two between-group differences were found to be significant-those in the treatment group reported a significantly greater decline in their impulsivity (z = -1.98, P = .048) and a significantly greater increase in their psychosocial functioning (z = -1.97, P = .049) than those in the control group. In the maintenance phase, those in the treatment group were found to have a significant decline in their scores on 9 of the 10 outcomes studied, while those in the control group had a significant decline in 3 of these outcomes. In terms of between-group differences, those in the treatment group reported a significantly greater decline in all 5 studied areas of borderline psychopathology: affective symptoms (z = -2.31, P = .021), cognitive symptoms (z = -3.20, P = .001), impulsivity (z = -2.44, P = .015), interpersonal difficulties (z = -2.15, P = .032), and overall borderline personality disorder symptoms (z = -2.11, P = .035). Taken together, these results suggest that internet-based psychoeducation is an effective form of early treatment for reducing the symptom
Zanarini, Mary C; Reichman, Charlotte A; Frankenburg, Frances R; Reich, D Bradford; Fitzmaurice, Garrett
2010-04-01
The purpose of this study was to describe the longitudinal course of eating disorders in patients with borderline personality disorder. The SCID I was administered to 290 borderline inpatients and 72 participants with other axis II disorders during their index admission and at five contiguous 2-year follow-up periods. The prevalence of anorexia, bulimia, and eating disorder not otherwise specified (EDNOS) declined significantly over time for those in both study groups but the prevalence of EDNOS remained significantly higher among borderline patients. While over 90% of borderline patients meeting criteria for anorexia, bulimia, or EDNOS at baseline experienced a stable remission by the time of the 10-year follow-up, diagnostic migration was common, particularly for those with anorexia or bulimia. In addition, both recurrences (52%) and new onsets (43%) of EDNOS were more common among borderline patients than recurrences and new onsets of anorexia (28% and 4%) and bulimia (29% and 11%). The results of this study suggest that the prognosis for both anorexia and bulimia in borderline patients is complicated, with remissions being stable but migrations to other eating disorders being common. The results also suggest that EDNOS may be the most prevalent and enduring of the eating disorders in these patients.
Philosophy and the Disciplines: The Borderlines | Minimah ...
African Journals Online (AJOL)
This work examines the borderlines of philosophy in relation to the central concern of other disciplines. As a preliminary step towards our examination, we attempt to uncover the specific nature of philosophy on the basis of its subject matter. We argue that while philosophy asks 'second order' questions about the totality of ...
Chabrol, Henri; Raynal, Patrick
2018-04-01
The co-occurrence of Autism Spectrum Disorder (ASD) and Borderline Personality Disorder (BPD) is not rare and has been linked to increased suicidality. Despite this significant comorbidity between ASD and BPD, no study had examined the co-occurrence of autistic traits and borderline personality disorder traits in the general population. The aim of the present study was to examine the co-occurrence of autistic and borderline traits in a non-clinical sample of young adults and its influence on the levels of suicidal ideation and depressive symptomatology. Participants were 474 college students who completed self-report questionnaires. Data were analysed using correlation and cluster analyses. Borderline personality traits and autistic traits were weakly correlated. However, cluster analysis yielded four groups: a low traits group, a borderline traits group, an autistic traits group, and a group characterized by high levels of both traits. Cluster analysis revealed that autistic and borderline traits can co-occur in a significant proportion of young adults. The high autistic and borderline traits group constituted 17% of the total sample and had higher level of suicidal ideation than the borderline traits group, despite similar levels of depressive symptoms. This result suggests that the higher suicidality observed in patients with comorbid ASD and BPD may extent to non-clinical individuals with high levels of co-occurrent autistic and borderline traits. Copyright © 2018 Elsevier Inc. All rights reserved.
Gruppemusikterapi med patienter med borderline-personlighedsforstyrrelse i dagbehandlingsregi
DEFF Research Database (Denmark)
Hannibal, Niels
2008-01-01
Denne artikel er første redegørelse for de erfaringer, som er gjort med gruppemusikterapi (GMT) for patienter med borderline-personlighedsforstyrrelse (BPF) i dagbehandlingsregi på Aalborg Psykiatriske Sygehus. Artiklen indeholder både konkrete anvisninger til aktiviteter og interventioner, liges...
Similarities and differences in borderline and organic personality disorder.
Mathiesen, Birgit B; Simonsen, Erik; Soegaard, Ulf; Kvist, Kajsa
2014-01-01
Previous research has shown that brain injury patients with Organic Personality Disorder (OPD) may display "borderline" traits due to prefrontal damage, and their personality structure may be unstable and close to a borderline personality organisation. They may have few general neuropsychological dysfunctions but specific executive deficits. Similar deficits have been found in patients with Borderline Personality Disorder (BPD). The objective of this study was to identify differences and similarities between the neuropsychological and personality profiles of BPD and OPD patients. Twenty BPD patients and 24 OPD patients were assessed with the Structured Clinical Interview for DSM-IV Axis II Disorders (SCID-II), the Karolinska Psychodynamic Profile (KAPP), and a comprehensive neuropsychological test battery. Very few neuropsychological differences were found between the two patient groups. However, the verbal fluency, verbal intelligence, verbal memory, and immediate auditory memory/attention of the BPD patients were significantly poorer than the OPD patients'. The KAPP profiles of the BPD patients showed significantly poorer functioning in three areas: frustration tolerance, the body as a factor of self-esteem, and overall personality organisation. These results support our clinical experience and expectations concerning the severity of symptoms of both patient groups. We suggest considering in depth assessments of both neuropsychological and personality-related problems for each of these patients in order to inform treatment.
[Epistemic and historical elucidation of the borderline personality disorder].
Londoño Paredes, Diego Enrique
2015-01-01
The particularities of those that have been considered "hard cases" in the clinical field, and their relationship with personality disorders, are discussed together with their quintessential conceptual and diagnostic model: the borderline personalities. The aim of the study is to historically and epistemologically rebuild their origins within psychiatry and psychoanalysis. From a classical epistemological and historical study, a brief tour is made through the nineteenth century alienism and the postulate of "partial insanity". Next, a passage is spawned through the concepts that emerged from this postulate: "monomania" and "moral insanity", up to mid-century Kraepelin and the "fundamental states" of manic-depressive insanity as pathological constitutional forms or characters, and reaching the twentieth century with characterology and psychopathic personalities. Finally, psychoanalysis is analyzed as the main source of borderline personality disorders arising from the problems encountered in analytical treatments and the development of the notion of "character neurosis". Borderline personality disorders are the result of the conjunction of a number of factors, heirs of the notion of "partial insanity", of the fundamental states of manic-depression insanity, of characterology, of the idea of constitutions and pathological personalities, together with the emerging concerns of psychoanalysis in the early twentieth century. Copyright © 2014 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.
Fulford, Daniel; Eisner, Lori R; Johnson, Sheri L
2015-06-30
Researchers and clinicians have long noted the overlap among features and high comorbidity of bipolar disorder and borderline personality disorder. The shared features of impulsivity and labile mood in both disorders make them challenging to distinguish. We tested the hypothesis that variables related to goal dysregulation would be uniquely related to risk for mania, while emotion-relevant impulsivity would be related to risk for both disorders. We administered a broad range of measures related to goal regulation traits and impulsivity to 214 undergraduates. Findings confirmed that risk for mania, but not for borderline personality disorder, was related to higher sensitivity to reward and intense pursuit of goals. In contrast, borderline personality disorder symptoms related more strongly than did mania risk with threat sensitivity and with impulsivity in the context of negative affect. Results highlight potential differences and commonalities in mania risk versus borderline personality disorder risk. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
Dickens, Geoffrey L; Frogley, Catherine; Mason, Fiona; Anagnostakis, Katina; Picchioni, Marco M
2016-01-01
Clozapine is an atypical antipsychotic medicine which can cause significant side-effects. It is often prescribed off-license in severe cases of borderline personality disorder contrary to national treatment guidelines. Little is known about the experiences of those who take clozapine for borderline personality disorder. We explored the lived-experience of women in secure inpatient care who were prescribed clozapine for borderline personality disorder. Adult females ( N = 20) participated in audio-taped semi-structured interviews. Transcripts were subject to thematic analysis. The central themes related to evaluation, wellbeing, understanding and self-management; for many, their subjective wellbeing on clozapine was preferred to prior levels of functioning and symptomatology, sometimes profoundly so. The negative and potentially adverse effects of clozapine were explained as regrettable but relatively unimportant. When psychological interventions are, at least initially, ineffective then clozapine treatment is likely to be evaluated positively by a group of women with borderline personality disorder in secure care despite the potential disadvantages.
Directory of Open Access Journals (Sweden)
Anja eVaskinn
2015-08-01
Full Text Available Although borderline personality disorder and schizophrenia are notably different mental disorders, they share problems in social cognition – or understanding the feelings, intentions and thoughts of other people. To date no studies have directly compared the social cognitive abilities of individuals with these two disorders. In this study, the social cognitive subdomain theory of mind was investigated in females with borderline personality disorder (n = 25, females with schizophrenia (n = 25 and healthy females (n = 25. An ecologically valid video-based measure (Movie for the Assessment of Social Cognition was used. For the overall score, females with schizophrenia performed markedly below both healthy females and females with borderline personality disorder, whereas females with borderline personality disorder did not perform significantly different compared to the healthy control group. A statistically significant error type x group interaction effect indicated that the groups differed with respect to kind of errors. Whereas females with borderline personality disorder made mostly overmentalizing errors, females with schizophrenia in addition committed undermentalizing errors. Our study suggests different magnitude and pattern of social cognitive problems in borderline personality disorder and schizophrenia.
Findeklee, S; Lotz, L; Heusinger, K; Hoffmann, I; Dittrich, R; Beckmann, M W
2016-11-01
Borderline ovarian tumours are semimalignant tumours occurring unilaterally or bilaterally with a peak incidence among women of reproductive age. Since the affected women often wish to preserve fertility, particular precautions must be taken when counselling the patient and obtaining consent prior to planning an individual treatment. Options for preserving fertility include an organ-sparing surgical procedure and cryopreservation of oocytes and/or ovarian tissue. In this article, we report on a 25-year-old patient with a bilateral seromucinous borderline tumour who desired all fertility-preserving options. In order to perform the procedure without delay, we opted to perform luteal phase stimulation prior to oocyte retrieval. We conclude by discussing the current literature on the state of fertility preservation in the treatment of borderline ovarian tumours.
Borderline personality disorder and regularly drinking alcohol before sex.
Thompson, Ronald G; Eaton, Nicholas R; Hu, Mei-Chen; Hasin, Deborah S
2017-07-01
Drinking alcohol before sex increases the likelihood of engaging in unprotected intercourse, having multiple sexual partners and becoming infected with sexually transmitted infections. Borderline personality disorder (BPD), a complex psychiatric disorder characterised by pervasive instability in emotional regulation, self-image, interpersonal relationships and impulse control, is associated with substance use disorders and sexual risk behaviours. However, no study has examined the relationship between BPD and drinking alcohol before sex in the USA. This study examined the association between BPD and regularly drinking before sex in a nationally representative adult sample. Participants were 17 491 sexually active drinkers from Wave 2 of the National Epidemiologic Survey on Alcohol and Related Conditions. Logistic regression models estimated effects of BPD diagnosis, specific borderline diagnostic criteria and BPD criterion count on the likelihood of regularly (mostly or always) drinking alcohol before sex, adjusted for controls. Borderline personality disorder diagnosis doubled the odds of regularly drinking before sex [adjusted odds ratio (AOR) = 2.26; confidence interval (CI) = 1.63, 3.14]. Of nine diagnostic criteria, impulsivity in areas that are self-damaging remained a significant predictor of regularly drinking before sex (AOR = 1.82; CI = 1.42, 2.35). The odds of regularly drinking before sex increased by 20% for each endorsed criterion (AOR = 1.20; CI = 1.14, 1.27) DISCUSSION AND CONCLUSIONS: This is the first study to examine the relationship between BPD and regularly drinking alcohol before sex in the USA. Substance misuse treatment should assess regularly drinking before sex, particularly among patients with BPD, and BPD treatment should assess risk at the intersection of impulsivity, sexual behaviour and substance use. [Thompson Jr RG, Eaton NR, Hu M-C, Hasin DS Borderline personality disorder and regularly drinking alcohol
Hawes, David J.; Helyer, Rebekah; Herlianto, Eugene C.; Willing, Jonah
2013-01-01
This study tested if children and adolescents with high levels of borderline personality features (BPF) exhibit the same shame-prone self-concept previously found to characterize adults with borderline personality disorder (Rusch et al., 2007). Self-concept was indexed using the Implicit Association Test, in a community sample of…
Trustworthiness Appraisal in Borderline Personality Disorder
Masland, Sara Rose
2016-01-01
Borderline personality (BPD) is a highly impairing illness with marked instability across multiple domains, including affect, interpersonal functioning, identity, and behavior. Within the past 15 years, researchers have sought to understand and characterize deficits in social cognition that might contribute to or arise from affective or interpersonal dysfunction. The purpose of this dissertation is to understand one aspect of impaired social cognition in BPD: biased trust processing. Individu...
Directory of Open Access Journals (Sweden)
Ali Mashhadi
2013-02-01
Full Text Available Background: Attention Deficit Hyperactivity Disorder (ADHD is a risk factor for Borderline Personality Disorder (BPD during adulthood. Studying the relationship between childhood ADHD disorder symptoms and depression and borderline personality disorder symptoms among students was the main aim of this study. Materials and Methods: A total of 291 students, who were studying in Shiraz and Tabriz universities inThe academic year of 2010-2011, were selected from three groups of Humanities, Basic Sciences, and Technical-Engineering Sciences using simple sampling method. They participated in the study through completing Wender Utah Rating Scale (WURS, Borderline Personality Scale (STB and Beck Depression Inventory (BDI-II. Pearsons correlation coefficient and multiple regression analysis were used to analyze the data. Results: The results showed that there is a significant positive relationship between childhood ADHD and borderline Personality Disorder (BPD in adulthood and childhood ADHD is able to predict BPD in adulthood (p<0.01. Similarly, the relationship between symptoms of childhood ADHD and depression was positive and significant (p<0.01. Conclusion: There is a relationship between symptoms of childhood ADHD, BPD and depression in students. It is recommended to pay due attention to the comorbidity disorders such as BPD and depression in the treatment of ADHD disorder.
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Ali Mohammadzadeh
2012-10-01
Full Text Available Background: There are models of the development of personality disorders which include individual differences in attachment relationships as causal factors contributed in explanation of these phenomena. The dimensional view of personality disorders represents these conditions as extreme variants of normal personality continua. This study investigated main and interactional effects of attachment styles and personality traits in relation to borderline characteristics. Materials and Methods: The current study was conducted in expo fact context. Randomly selected 603 participants (134 male 469 female from Tabriz Payam-e-Noor, Tarbait Moallem of Azarbaijan and Sarab Payam-e-Noor university students took part in this research. Participants answered to Borderline Personality Inventory (BPI, Eysenck Personality Questionnaire Revised, Short form (EPQ-RS and Adult Attachment Inventory (AAI. Data were analyzed using two way analysis of variance method.Results: Results indicate main effects of attachment styles and personality traits, so, individual with ambivalent insecure attachment experience more intensity of borderline traits than individual with avoidant insecure and secure attachments. Individual with high psychoticim and neuroticism traits experience more intensity of borderline characteristics than individual with extraversion personality traits. Also, there are no interactional effects of attachment styles and personality traits in relation to borderline characteristics. Conclusion: These findings reiterate contribution of childhood risk factors in developing borderline personality disorder, especially in children with emotionally vulnerability.
Cerebellar Cognitive Affective Syndrome Presented as Severe Borderline Personality Disorder
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Danilo Pesic
2014-01-01
Full Text Available An increasing number of findings confirm the significance of cerebellum in affecting regulation and early learning. Most consistent findings refer to association of congenital vermis anomalies with deficits in nonmotor functions of cerebellum. In this paper we presented a young woman who was treated since sixteen years of age for polysubstance abuse, affective instability, and self-harming who was later diagnosed with borderline personality disorder. Since the neurological and neuropsychological reports pointed to signs of cerebellar dysfunction and dysexecutive syndrome, we performed magnetic resonance imaging of brain which demonstrated partially developed vermis and rhombencephalosynapsis. These findings match the description of cerebellar cognitive affective syndrome and show an overlap with clinical manifestations of borderline personality disorder.
The Red Queen visits Minkowski space
International Nuclear Information System (INIS)
Low, Robert J
2007-01-01
When Alice went Through the Looking Glass, she found herself in a situation where she had to run as fast as she could in order to stay still. In accordance with the dictum that truth is stranger than fiction, we will see that it is possible to find a situation in special relativity where running towards one's target is actually counter-productive. Although the situation is easily analysed algebraically, the qualitative properties of the analysis are greatly illuminated by the use of spacetime diagrams
McMain, Shelley F; Links, Paul S; Gnam, William H; Guimond, Tim; Cardish, Robert J; Korman, Lorne; Streiner, David L
2009-12-01
The authors sought to evaluate the clinical efficacy of dialectical behavior therapy compared with general psychiatric management, including a combination of psychodynamically informed therapy and symptom-targeted medication management derived from specific recommendations in APA guidelines for borderline personality disorder. This was a single-blind trial in which 180 patients diagnosed with borderline personality disorder who had at least two suicidal or nonsuicidal self-injurious episodes in the past 5 years were randomly assigned to receive 1 year of dialectical behavior therapy or general psychiatric management. The primary outcome measures, assessed at baseline and every 4 months over the treatment period, were frequency and severity of suicidal and nonsuicidal self-harm episodes. Both groups showed improvement on the majority of clinical outcome measures after 1 year of treatment, including significant reductions in the frequency and severity of suicidal and nonsuicidal self-injurious episodes and significant improvements in most secondary clinical outcomes. Both groups had a reduction in general health care utilization, including emergency visits and psychiatric hospital days, as well as significant improvements in borderline personality disorder symptoms, symptom distress, depression, anger, and interpersonal functioning. No significant differences across any outcomes were found between groups. These results suggest that individuals with borderline personality disorder benefited equally from dialectical behavior therapy and a well-specified treatment delivered by psychiatrists with expertise in the treatment of borderline personality disorder.
Self-image and perception of mother and father in psychotic and borderline patients.
Armelius, K; Granberg
2000-02-01
Psychotic and borderline patients rated their self-image and their perception of their mother and father using the Structural Analysis of Social Behavior model (SASB). The borderline patients had more negative images of themselves and their parents, especially their fathers, than did the psychotic patients and the normal subjects, while the psychotic patients' ratings did not differ much from those of the normal subjects. The self-image was related to the images of both parents for borderline patients and normal subjects, while for the psychotic patients only the image of the mother was important for the self-image. In addition, the psychotic patients did not differentiate between the poles of control and autonomy in the introjected self-image. It was concluded that borderline patients are characterized by negative attachment, while psychotic patients are characterized by poor separation from the mother and poor differentiation between autonomy and control. The paper also discusses how this may influence the patients' relations to others. Psychotische und Borderline Patienten beurteilten ihr Selbstbild und ihre Wahrnehmung von Mutter und Vater mit Hilfe der strukturalen Analyse sozialen Verhaltens (SASB). Die Borderline Patienten hattten negativere Selbstbilder und Elternbilder (speziell Vaterbilder) als die psychotischen Patienten und gesunde Personen. Die Beurteilungen der psychotischen Patienten unterschieden sich dagegen nicht besonders von jenen Gesunder. Das Selbstbild stand in Beziehung zu beiden Elternbildern bei den Borderline Patienten und den Gesunden, während bei den psychotischen Patienten nur das Mutterbild für das Selbstbild bedeutsam war. Außerdem konnte bei den psychotischen Patienten nicht zwischen den Polen der Kontrolle und Autonomie bzgl. der introjizierten Selbstbilder differenziert werden. Aus den Ergebnissen wird gefolgert, dass Borderline Patienten durch eine negative Bindung charackterisiert sind, psychotische Patienten dagegen durch
C. Licht; M. Eikelenboom; prof Berno van Meijel; A.T. Beekman; dr Barbara Stringer; B. Koekkoek; A.J. Kerkhof; B.W. Penninx
2013-01-01
Background The presence of a comorbid borderline personality disorder (BPD) may be associated with an increase of suicidal behaviors in patients with depressive and anxiety disorders. The aim of this study is to examine the role of borderline personality traits on recurrent suicide
International Nuclear Information System (INIS)
Shabbir, Ghulam; Khan, Suhail
2010-01-01
In this paper we classify cylindrically symmetric static space-times according to their teleparallel homothetic vector fields using direct integration technique. It turns out that the dimensions of the teleparallel homothetic vector fields are 4, 5, 7 or 11, which are the same in numbers as in general relativity. In case of 4, 5 or 7 proper teleparallel homothetic vector fields exist for the special choice to the space-times. In the case of 11 teleparallel homothetic vector fields the space-time becomes Minkowski with all the zero torsion components. Teleparallel homothetic vector fields in this case are exactly the same as in general relativity. It is important to note that this classification also covers the plane symmetric static space-times. (general)
Buck, Kelly; Leonhardt, Bethany; George, Sunita; James, Alison; Vohs, Jenifer; Lysaker, Paul
2017-01-01
Abstract Background: Metacognition is a psychological function that includes a spectrum of mental activities. These activities involve thinking about thinking and range from more discrete acts, in which people recognize specific thoughts and feelings, to more synthetic acts in which an array of intentions, thoughts, feelings, and connections between events are integrated into larger complex representations. Recently, interest has arisen in the important role that metacognitive deficits may play in schizophrenia spectrum disorders. Research has found that many with schizophrenia experience compromised metacognitive capacity and the degree of impairment in metacognition has been linked to negative and disorganized symptoms, decrement in social functioning, and lower levels of subjective indicators of recovery. While metacognitive deficits have been broadly explored in schizophrenia, less is known about whether these deficits are similar or different than those found in other forms of serious mental illness. Methods: To explore this issue, we administered assessments of metacognition using the Metacognition Assessment Scale-Abbreviated, Alexithymia using the Toronto Alexithymia Scale and Social Cognition using the Bell Lysaker Emotion Recognition Scale to 65 adults with Schizophrenia, 34 adults with Borderline Personality Disorder (PD) and 32 adults with a Substance Use Disorder. We chose Borderline PD as our primary comparison because this group has also been found to have profound alterations in the ability to recognize and think about one’s own and others’ mental activities. We chose substance use disorder as a third psychiatric condition given that this is a common comorbidity of Borderline PD and Schizophrenia and because it has also been linked with deficits in the ability to reflect about mental states. Results: ANCOVA controlling for age revealed the Schizophrenia group had significant poorer overall metacognition compared to the other 2 groups while the
Yang-Mills theory in null path space
International Nuclear Information System (INIS)
Kent, S.L.
1982-01-01
A reformulation of classical GL(n,c) Yang-Mills theory is presented. The reformulation is in terms of a single matrix-valued function G on a six-dimensional subspace of the space of paths in Minkowski space, M. This subspace is defined as the null paths beginning at each point, (X/sup a/), of M and ending at future null infinity. A convenient parametrization of these paths is to give the Minkowski coordinates x/sup a/ of the starting point and the (complex) stereographic coordinates (xi, antixi) on S 2 which label the light cone generators of x/sup a/. A path is thus labeled by (x/sup a/,xi, antixi). The function G(x/sup a/,xi, antixi) is defined by the parallel propagation (with a given connection) of n linearly independent fiber vectors from x/sup a/ to null infinity along the (xi, antixi) generator. From knowledge of G(x/sup a/,xi, antixi) the connection one-form γ/sub a/ at the point x/sup a/ can be obtained is shown. Furthermore how the vacuum Yang-Mills equations can be imposed on the G is shown. This results in a rather complicated integro-differential equation for G which involves the characteristic initial data (essentially the radiation field) acting as the driving term. Two simple special cases are immediately obtainable; in the case of self-dual (or anti-self dual) fields the author obtains a simple derivation of the Sparling equation, namely delta G = -GA, while for Abelian (Maxwell) theories obtained the equation delta anti delta log G = -anti delta A-anti delta A, where A and its conjugate anti A are the characteristic free data given on null infinity. The latter equation is equivalent to the vacuum Maxwell equations
Sonographic evaluation of borderline hips in the newborn
International Nuclear Information System (INIS)
Rabassini, A.; Piovesan, L.; Rupeni, L.; Donadi, M.; Bacarini, L.; Gerardi, A.; Ortolani, M.
1991-01-01
Infant hips are classified, according to Graf, in 4 US types on the basis of the morphologic changes in both the cartilaginous and the bony roofs (type I, II, III, IV). Out of 6,000 examined hips, 170 (2.8%) were considered, which could be classified neither as type I (mature) nor as type II (delayed/immature ossification). These hips were called borderline hips. They exhibited some charecteristic US features: good bone modeling, rounded cotyle, and α angle 60 grades ±2. They were always observed during the first month of the patients' life. Anamnestic data were not specific (27.5% breech delivery, and 13% oligohydramnios); clinics sometimes overestimated tha actual anatomic development (64/170 cases with positivity of Ortolani's sign and/or restricted abduction; 25% of patients presented with no suspicious signs) Dynamic hip examination showed only physiological cranial deflection of the cartilaginous roof. Finally, borderline hips developed into type I hips in 99% of cases, within the third month of the patients' life
Numerical studies of the Bethe-Salpeter equation for a two-fermion bound state
de Paula, W.; Frederico, T.; Salmè, G.; Viviani, M.
2018-03-01
Some recent advances on the solution of the Bethe-Salpeter equation (BSE) for a two-fermion bound system directly in Minkowski space are presented. The calculations are based on the expression of the Bethe-Salpeter amplitude in terms of the so-called Nakanishi integral representation and on the light-front projection (i.e. the integration of the light-front variable k - = k 0 - k 3). The latter technique allows for the analytically exact treatment of the singularities plaguing the two-fermion BSE in Minkowski space. The good agreement observed between our results and those obtained using other existing numerical methods, based on both Minkowski and Euclidean space techniques, fully corroborate our analytical treatment.
Infinite-parametric extension of the conformal algebra in D>2 space-time dimension
International Nuclear Information System (INIS)
Fradkin, E.S.; Linetsky, V.Ya.
1990-09-01
On the basis of the analytic continuations of semisimple Lie algebras discovered recently by us we construct manifestly quasiconformal infinite-dimensional algebras AC(so(4,1)) and PAC(so(3,2)) extending the conformal algebras in three-dimensional Euclidean and Minkowski space-time like the Virasoro algebra extends so(2,1). Their higher spin generalizations are also constructed. A counterpart of the central extension for D>2 and possible applications in exactly solvable conformal quantum field models in D>2 are discussed. (author). 31 refs, 2 figs
Stringer, Barbara; van Meijel, Berno; Eikelenboom, Merijn; Koekkoek, Bauke; Licht, Carmilla M. M.; Kerkhof, Ad J. F. M.; Penninx, Brenda W. J. H.; Beekman, Aartjan T. F.
2013-01-01
Background: The presence of a comorbid borderline personality disorder (BPD) may be associated with an increase of suicidal behaviors in patients with depressive and anxiety disorders. The aim of this study is to examine the role of borderline personality traits on recurrent suicide attempts.
Klatt, Michael A; Schröder-Turk, Gerd E; Mecke, Klaus
2017-07-01
Structure-property relations, which relate the shape of the microstructure to physical properties such as transport or mechanical properties, need sensitive measures of structure. What are suitable fabric tensors to quantify the shape of anisotropic heterogeneous materials? The mean intercept length is among the most commonly used characteristics of anisotropy in porous media, e.g., of trabecular bone in medical physics. Yet, in this series of two papers we demonstrate that it has conceptual shortcomings that limit the validity of its results. We test the validity of general assumptions regarding the properties of the mean-intercept length tensor using analytical formulas for the mean-intercept lengths in anisotropic Boolean models (derived in part I of this series), augmented by numerical simulations. We discuss in detail the functional form of the mean intercept length as a function of the test line orientations. As the most prominent result, we find that, at least for the example of overlapping grains modeling porous media, the polar plot of the mean intercept length is in general not an ellipse and hence not represented by a second-rank tensor. This is in stark contrast to the common understanding that for a large collection of grains the mean intercept length figure averages to an ellipse. The standard mean intercept length tensor defined by a least-square fit of an ellipse is based on a model mismatch, which causes an intrinsic lack of accuracy. Our analysis reveals several shortcomings of the mean intercept length tensor analysis that pose conceptual problems and limitations on the information content of this commonly used analysis method. We suggest the Minkowski tensors from integral geometry as alternative sensitive measures of anisotropy. The Minkowski tensors allow for a robust, comprehensive, and systematic approach to quantify various aspects of structural anisotropy. We show the Minkowski tensors to be more sensitive, in the sense, that they can
Borschmann, Rohan; Trevillion, Kylee; Henderson, R Claire; Rose, Diana; Szmukler, George; Moran, Paul
2014-06-01
Little is known about the crisis treatment preferences of people with borderline personality disorder. Clinicians may also question service users' ability to make considered decisions about their treatment when in crisis. Therefore, this qualitative study aimed to investigate crisis treatment preferences of a sample of community-dwelling adults with borderline personality disorder. Participants were 41 adults with borderline personality disorder who had created joint crisis plans during a randomized controlled trial. Data from all 41 joint crisis plans were analyzed iteratively via a thematic analysis framework. Participants gave clear statements in their crisis plans relating to the desire to recover from the crisis and to improve their social functioning. Key themes included the desire to be treated with dignity and respect and to receive emotional and practical support from clinicians. Many participants spoke of the importance of connecting with others during periods of crisis, but several reported a clear desire to be left alone during a future crisis. Other themes concerned preferences for specific treatment refusals during crises, including particular types of psychotropic medication and involuntary treatment. The variation of participants' preferences underscores the importance of developing individually tailored crisis plans for people with borderline personality disorder. The need to be treated with dignity and respect and to be given autonomy in decision making--also identified in global surveys of people with severe mental illness--is important to people with borderline personality disorder. Key messages for clinicians, service users, and policy makers, in addition to staff training issues, are discussed.
[Anthropogenic sources of radiation hazard in the near-Earth space].
Fedoseev, G A
2004-01-01
All plausible artificial radioactive sources entering the near-Earth space (NES) were systematized and consequences of various large radiation accidents and catastrophes to Earth and NES were analyzed. Aggressive "population" of near-Earth orbits by space stations with rotating crews, unmanned research platforms and observatories extends "borderlines" of the noosphere raising at the same time concerns about the noosphere radiation safety and global radioecology. Specifically, consideration is given to the facts of negative effects of space power reactor facilities on results of orbital astrophysical investigations.
Quantum mechanics in curved space-time and its consequences for the theory on the flat space-time
International Nuclear Information System (INIS)
Tagirov, E.A.
1997-01-01
Thus, the structure is extracted from the initial general-relativistic setting of the quantum theory of the scalar field φ that can be considered as quantum mechanics in V 1,3 in the Schroedinger picture, which includes relativistic corrections not only in the Hamiltonian of the Schroedinger equation but also in the operators of primary observables. In the terms pertaining to these corrections the operators differ from their counterparts resulting from quantization of a classical spinless particle. In general, they do not commute at all and thus the quantum phase space loses the feature that half its coordinates retain a manifold structure, which Biedenharn called 'a miracle of quantization'. This non-commutativity expands up to the exact (in the sense 'non-asymptotic in c -2 ') quantum mechanics of a free motion in the Minkowski space-time if curvilinear coordinates are taken as observables, which are necessary if non-inertial frames of references are considered
Sleep EEG findings in ICD-10 borderline personality disorder in Egypt.
Asaad, Tarek; Okasha, Tarek; Okasha, Ahmed
2002-09-01
Previous work has demonstrated that patients with borderline personality disorder show some similarities to patients with major depression, especially regarding their sleep profile. This study aimed at investigating such a hypothesis in an Egyptian sample, considering the possible influence of cultural differences. All night polysomnographic assessments were made for 20 ICD-10 diagnosed borderline patients (without co-morbid depression), in addition to 20 patients with major depression and 20 healthy matched controls. The two patient groups differed significantly from controls in their sleep profile, especially regarding sleep continuity measures, decreased SWS and REM sleep abnormalities. High similarity was found in EEG sleep profile of the two patient groups, though the changes were more robust in patients with depression. The small number of subjects precluded finer analyses of sleep microstructure by depressive symptoms. The great similarity in EEG sleep profile between borderline personality disorder patients and patients with major depression suggests a common biological origin for both conditions, with the difference being 'quantitative' rather than 'qualitative'. Our data are all the more compelling in that the presumed personality disturbance in the Egyptian culture manifests neurophysiologically as in the Western world.
Lie-Hamilton systems on curved spaces: a geometrical approach
Herranz, Francisco J.; de Lucas, Javier; Tobolski, Mariusz
2017-12-01
A Lie-Hamilton system is a nonautonomous system of first-order ordinary differential equations describing the integral curves of a t-dependent vector field taking values in a finite-dimensional Lie algebra, a Vessiot-Guldberg Lie algebra, of Hamiltonian vector fields relative to a Poisson structure. Its general solution can be written as an autonomous function, the superposition rule, of a generic finite family of particular solutions and a set of constants. We pioneer the study of Lie-Hamilton systems on Riemannian spaces (sphere, Euclidean and hyperbolic plane), pseudo-Riemannian spaces (anti-de Sitter, de Sitter, and Minkowski spacetimes) as well as on semi-Riemannian spaces (Newtonian spacetimes). Their corresponding constants of motion and superposition rules are obtained explicitly in a geometric way. This work extends the (graded) contraction of Lie algebras to a contraction procedure for Lie algebras of vector fields, Hamiltonian functions, and related symplectic structures, invariants, and superposition rules.
Modelling borderline and mild dysplasia associated with HPV 6 and 11 infection.
Chapman, Ruth; Soldan, Kate; Jit, Mark
2011-04-05
Low risk HPV types 6/11 are responsible for some low-grade cytological abnormalities. Most economic analyses of HPV vaccination have estimated the additional benefit of HPV 6/11 protection by the quadrivalent vaccine, over the bivalent, based on reduction of genital warts but have not included reduction in repeat smears and colposcopies due to low-grade abnormalities. We investigate the contribution of HPV types 6/11 to abnormal smears and associated costs in England. The risk of borderline or mild dysplasia due to HPV 6/11 infection was estimated from a study of type-specific HPV DNA in cervical screening specimens collected throughout England. A Markov model representing 10 million women with HPV 6/11 or with no HPV infection from 24 to 64 years was developed to estimate the number of abnormal smears, subsequent repeat smears and colposcopies due to HPV 6/11 associated with borderline or mild dysplasia. Fitting was achieved by varying the force of infection, probability of borderline or mild dysplasia if HPV-uninfected or infected with HPV 6/11 and the duration of infection. The relative risks of borderline or mild dysplasia when infected with HPV 6/11 compared to not being HPV infected were 6.32 (95% credible interval 1.56-25.6) and 17.5 (1.02-300) respectively. Using best fitting parameters we find the costs incurred are between £170 and £195 per abnormal smear due to infection with HPV 6/11. In England, the impact of cytological abnormalities due to HPV 6/11 is relatively small, but not negligible. A vaccine that protects against HPV 6/11 infections could reduce costs associated with borderline and mild dysplasia, and associated colposcopies. These benefits should be considered when formulating immunisation policy, if possible. Smears and colposcopies in those uninfected with HPV far outnumber those in women infected with HPV 6/11. Copyright © 2011 Elsevier Ltd. All rights reserved.
Herpertz, Sabine C; Bertsch, Katja
2015-09-01
Borderline personality disorder is characterized by three domains of dysfunction: affect dysregulation, behavioral dyscontrol, and interpersonal hypersensitivity. Interpersonal hypersensitivity is associated with a (pre)attentive bias toward negative social information and, on the level of the brain, enhanced bottom-up emotion generation, while affect dysregulation results from abnormal top-down processes. Additionally, the problems of patients with borderline personality disorder in interpersonal functioning appear to be related to alterations in the (social) reward and empathy networks. There is increasing evidence that the oxytocinergic system may be involved in these domains of dysfunction and may thus contribute to borderline psychopathology and even open new avenues for targeted pharmacotherapeutic approaches. From studies in healthy and clinical subjects (including first studies with borderline personality disorder patients), the authors provide a conceptual framework for future research in borderline personality disorder that is based on oxytocinergic modulation of the following biobehavioral mechanisms: 1) the brain salience network favoring adaptive social approach behavior, 2) the affect regulation circuit normalizing top-down processes, 3) the mesolimbic circuit improving social reward experiences, and 4) modulating brain regions involved in cognitive and emotional empathy. In addition, preliminary data point to interactions between the oxytocin and cannabinoid system, with implications for pain processing. These mechanisms, which the authors believe to be modulated by oxytocin, may not be specific for borderline personality disorder but rather may be common to a host of psychiatric disorders in which disturbed parent-infant attachment is a major etiological factor.
Conformal gravity, the Einstein equations and spaces of complex null geodesics
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Baston, R.J.; Mason, L.J.
1987-07-01
The aim of the paper is to give a twistorial characterisation of the field equations of conformal gravity and of Einstein spacetimes. Strong evidence is provided for a particularly concise characterisation of these equations in terms of 'formal neighbourhoods'of the space of complex null geodesics. Second-order perturbations of the metric of complexified Minkowski space are considered. These correspond to certain infinitesimal deformations of its space of complex null geodesics, PN. PN has a natural codimension one embedding into a larger space. It is shown that deformations extend automatically to the fourth-order embedding (that is, the fourth formal neighbourhood). They extend to the fifth formal neighbourhood if and only if the corresponding perturbation in the metric has vanishing Bach tensor. Finally, deformations which extend to the sixth formal neighbourhood correspond to perturbations in the metric that are conformally related to ones satisfying the Einstein equations. The authors present arguments which suggest that the results will also hold when spacetime is fully curved.
Conformal gravity, the Einstein equations and spaces of complex null geodesics
International Nuclear Information System (INIS)
Baston, R.J.; Mason, L.J.
1987-01-01
The aim of the paper is to give a twistorial characterisation of the field equations of conformal gravity and of Einstein spacetimes. Strong evidence is provided for a particularly concise characterisation of these equations in terms of 'formal neighbourhoods'of the space of complex null geodesics. Second-order perturbations of the metric of complexified Minkowski space are considered. These correspond to certain infinitesimal deformations of its space of complex null geodesics, PN. PN has a natural codimension one embedding into a larger space. It is shown that deformations extend automatically to the fourth-order embedding (that is, the fourth formal neighbourhood). They extend to the fifth formal neighbourhood if and only if the corresponding perturbation in the metric has vanishing Bach tensor. Finally, deformations which extend to the sixth formal neighbourhood correspond to perturbations in the metric that are conformally related to ones satisfying the Einstein equations. The authors present arguments which suggest that the results will also hold when spacetime is fully curved. (author)
Mosiołek, Anna; Gierus, Jacek; Koweszko, Tytus; Szulc, Agata
2018-02-28
The purpose of the study was to examine the relation between cognitive functioning in people with borderline personality disorder and their overall functioning level, as well as psychopathology intensification specific for this type of disorders. 64 patients aged 18-55 (M = 30.09) with borderline personality disorder (emotionally unstable personality - borderline type in the ICD-10) were examined. The study used: demographic-descriptive questionnaire, SCID II, Borderline Symptom Checlist-23, and Global Assessment of Functioning (GAF). For cognitive assessment, The Rey Auditory Verbal Learning Test, The Rey-Osterrieth Complex Figure test, TMTA, TMTB, verbal fluency test, Stroop test and Frontal Assessment Battery (FAB) were used. The average GAF score in the sample was M =43.65. Significant differences between the comorbidity group and non-comorbidity group were observed with respect to the GAF scores (Mann-Whitney U = 300.500, p = 0.008) as well as a number of significant (p borderline personality disorder. The obtained data seem to suggest that the cognitive functions affect the overall functioning only in patients with psychiatric co-morbidity. In people without psychiatric co-morbidity there is a relationship of cognitive functions only with certain aspects of psychopathology specific to BPD.
[The problems in dealing with the incest experiences of borderline patients].
Dulz, B; Schreyer, D
1997-11-01
Sexual and/or physical abuse can be found in large numbers in the history of severely disturbed borderline patients. The treatment of experiences of incest can induce new symptoms as well as reinforce still existing symptoms. Thus the free-floating anxiety, which is connected with the anxiety of impending doom in early childhood, can be reduced. During in-patient treatment the extent of free-floating anxiety of borderline patients can be reduced by the holding function of the therapeutic team. Reduction of the other symptoms can take place only subsequent to this. A therapy geared to the reduction of singular symptoms might be less successful.
Different aspects of emotional intelligence of borderline personality disorder
Peter, Mathell; Arntz, Arnoud R; Klimstra, T.A.; Vingerhoets, A.J.J.M.
2018-01-01
Objectives: The present study investigated deficiencies in different components of emotional intelligence in borderline personality disorder (BPD). Method: The Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT) and the Emotional Quotient Inventory (EQ-i) were used to assess EI dimensions. BPD
Sempertegui Vallejo, G.A.; Karreman, A.; Arntz, A.; Bekker, M.H.J.
2013-01-01
Borderline personality disorder is a serious psychiatric disorder for which the effectiveness of the current pharmacotherapeutical and psychotherapeutic approaches has shown to be limited. In the last decades, schema therapy has increased in popularity as a treatment of borderline personality
Lysaker, Paul H; George, Sunita; Chaudoin-Patzoldt, Kelly A; Pec, Ondrej; Bob, Petr; Leonhardt, Bethany L; Vohs, Jenifer L; James, Alison V; Wickett, Amanda; Buck, Kelly D; Dimaggio, Giancarlo
2017-11-01
Deficits in the ability to recognize and think about mental states are broadly understood to be a root cause of dysfunction in Borderline Personality Disorder (PD). This study compared the magnitude of those deficits relative to other forms of serious mental illness or psychiatric conditions. Assessments were performed using the metacognition assessment scale-abbreviated (MAS-A), emotion recognition using the Bell Lysaker Emotion Recognition Test and alexithymia using the Toronto Alexithymia Scale among adults with schizophrenia (n = 65), Borderline PD (n = 34) and Substance Use disorder without psychosis or significant Borderline traits (n = 32). ANCOVA controlling for age revealed the Borderline PD group had significantly greater levels of metacognitive capacity on the MAS-A than the schizophrenia group and significantly lower levels of metacognitive capacity than the Substance Use group. Multiple comparisons revealed the Borderline PD group had significantly higher self-reflectivity and awareness of the other's mind than the schizophrenia group but lesser mastery and decentration on the MAS-A than substance use group, after controlling for self-report of psychopathology and overall number of PD traits. The Borderline PD and Schizophrenia group had significantly higher levels of alexithymia than the substance use group. No differences were found for emotion recognition. Results suggest metacognitive functioning is differentially affected in different mental disorders. Published by Elsevier B.V.
Pelvic inflammatory disease and risk of invasive ovarian cancer and ovarian borderline tumors
DEFF Research Database (Denmark)
Rasmussen, Christina B; Faber, Mette T; Jensen, Allan
2013-01-01
PURPOSE: The aim of the study was to examine the potential association between a history of pelvic inflammatory disease (PID) and risk of epithelial ovarian cancer or ovarian borderline tumors. METHODS: In a population-based case-control study in Denmark, we included 554 women with invasive ovarian...... cancer, 202 with ovarian borderline tumors, and 1,564 controls aged 35-79 years. The analyses were performed in multiple logistic regression models. RESULTS: We found a significantly increased risk of ovarian borderline tumors among women with a history of PID (OR = 1.50; 95% CI 1.......08-2.08) but no apparent association between PID and risk of invasive ovarian cancer (OR = 0.83; 95% CI 0.65-1.05). We found no effect of age at time of first PID or time since first PID on the risk for either condition. CONCLUSION: Our results suggest that a history of PID is associated with an increased risk of ovarian...
Directory of Open Access Journals (Sweden)
Takemoto Shuji
2012-05-01
Full Text Available Abstract Introduction Benign multicystic peritoneal mesothelioma is an extremely rare tumor that occurs mainly in women in their reproductive age. Its preoperative diagnosis and adequate treatment are quite difficult to attain. Case presentation Our patient was a 23-year-old Japanese woman who had a history of right oophorectomy and left ovarian cystectomy for an ovarian tumor at 20 years of age. The left ovarian tumor had been diagnosed on histology as a mucinous borderline tumor. Two years and nine months after the initial operation, multiple cysts were found in our patient. A laparotomy was performed and her uterus, left ovary, omentum and pelvic lymph nodes were removed due to suspicion of recurrence of the borderline tumor. A histological examination, however, revealed that the cysts were not a recurrence of the borderline tumor but rather benign multicystic peritoneal mesothelioma. There were no residual lesions and our patient was followed up with ultrasonography. She remains free from recurrence nine months after treatment. Conclusion We report a case of benign multicystic peritoneal mesothelioma mimicking recurrence of an ovarian borderline tumor. Benign multicystic peritoneal mesothelioma should be suspected when a multicystic lesion is present in the pelvis as in the case presented here, especially in patients with previous abdominal surgery.
Parenting of children with borderline to mild intellectual disability
Kleefman, Marijke
2015-01-01
Raising children with borderline to mild intellectual disability (BMID) may cause parenting stress, especially when the child with BMID has psychosocial problems. To improve support, it is important to have a better understanding of the effectiveness of interventions to reduce problems in raising
International Nuclear Information System (INIS)
Ovsiyu, E.M.
2012-01-01
Exact solutions of the Schrodinger equation in the two-dimensional Riemannian space of negative curvature, the hyperbolic Lobachevsky plane, in the presence of an external magnetic field, which is an analog of a uniform magnetic field in the Minkowski space, are constructed. The description uses the cylindrical and quasi-Cartesian coordinates. The quasi-Cartesian coordinates determine the Poincare half-plane. In the both coordinate systems, the Schrodinger equation is solved exactly, the wave functions are constructed. A generalized formula for energy levels is found, which describes the quantized motion of a particle in a magnetic field in the Lobachevsky plane. (authors)
Merrett, Zalie; Rossell, Susan L; Castle, David J
2016-07-01
In clinical settings, there is substantial evidence both clinically and empirically to suggest that approximately 50% of individuals with borderline personality disorder experience auditory verbal hallucinations. However, there is limited research investigating the phenomenology of these voices. The aim of this study was to review and compare our current understanding of auditory verbal hallucinations in borderline personality disorder with auditory verbal hallucinations in patients with a psychotic disorder, to critically analyse existing studies investigating auditory verbal hallucinations in borderline personality disorder and to identify gaps in current knowledge, which will help direct future research. The literature was searched using the electronic database Scopus, PubMed and MEDLINE. Relevant studies were included if they were written in English, were empirical studies specifically addressing auditory verbal hallucinations and borderline personality disorder, were peer reviewed, used only adult humans and sample comprising borderline personality disorder as the primary diagnosis, and included a comparison group with a primary psychotic disorder such as schizophrenia. Our search strategy revealed a total of 16 articles investigating the phenomenology of auditory verbal hallucinations in borderline personality disorder. Some studies provided evidence to suggest that the voice experiences in borderline personality disorder are similar to those experienced by people with schizophrenia, for example, occur inside the head, and often involved persecutory voices. Other studies revealed some differences between schizophrenia and borderline personality disorder voice experiences, with the borderline personality disorder voices sounding more derogatory and self-critical in nature and the voice-hearers' response to the voices were more emotionally resistive. Furthermore, in one study, the schizophrenia group's voices resulted in more disruption in daily functioning
Transient diagnosis system using quantum-inspired computing and Minkowski distance
Energy Technology Data Exchange (ETDEWEB)
Nicolau, Andressa dos Santos; Schirru, Roberto, E-mail: andressa@lmp.ufrj.b, E-mail: schirru@lmp.ufrj.b [Federal University of Rio de Janeiro (PEN/COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Nuclear Engineering Program
2011-07-01
This paper proposes a diagnosis system model for identification of transient in a PWR nuclear power plant, optimized by the Quantum Inspired Evolutionary Algorithm - QEA in order to help nuclear power plant operator reduce his cognitive load and increase his available time to maintain the plant operating in a safe condition. This method was developed in order to be able to recognize the normal condition and three accidents of the design basis list of the nuclear power plant Angra 2, postulated in the Final Safety Analysis Report (FSAR). This System compares the similarly distance between the set of variables of the anomalous event, in a given time t, and the centroids of the design-basis transient variables. The lower similarly distance indicates the class of the transient to which the anomalous event belongs. The QEA was then used to find the best position of the centroids of each class of the selected transients. Such positions maximize the number of the correct classifications. Unlike the diagnosis system proposed in the literature, Minkowski distance was employed to calculate the similarity distance. The signatures of four transients were submitted to 1% and 2% of noise, and tested with prototype vector found by QEA. The results showed that the present transient diagnostic system was successfully implemented in the nuclear accident identification problem and was compatible with the techniques presented in the literature. (author)
Transient diagnosis system using quantum-inspired computing and Minkowski distance
International Nuclear Information System (INIS)
Nicolau, Andressa dos Santos; Schirru, Roberto
2011-01-01
This paper proposes a diagnosis system model for identification of transient in a PWR nuclear power plant, optimized by the Quantum Inspired Evolutionary Algorithm - QEA in order to help nuclear power plant operator reduce his cognitive load and increase his available time to maintain the plant operating in a safe condition. This method was developed in order to be able to recognize the normal condition and three accidents of the design basis list of the nuclear power plant Angra 2, postulated in the Final Safety Analysis Report (FSAR). This System compares the similarly distance between the set of variables of the anomalous event, in a given time t, and the centroids of the design-basis transient variables. The lower similarly distance indicates the class of the transient to which the anomalous event belongs. The QEA was then used to find the best position of the centroids of each class of the selected transients. Such positions maximize the number of the correct classifications. Unlike the diagnosis system proposed in the literature, Minkowski distance was employed to calculate the similarity distance. The signatures of four transients were submitted to 1% and 2% of noise, and tested with prototype vector found by QEA. The results showed that the present transient diagnostic system was successfully implemented in the nuclear accident identification problem and was compatible with the techniques presented in the literature. (author)
Borderline Personality Disorder in an Intermediate Psychological Therapies Service
Ryan, Seamus; Danquah, Adam N.; Berry, Katherine; Hopper, Mary
2017-01-01
The intermediate psychological therapies service is provided for individuals referred with common mental health problems within the primary care psychological therapies service, but whose difficulties are longstanding and/or complex. The prevalence of borderline personality disorder (BPD) in intermediate psychological therapy services has not been…
Facilitation of self-empowerment of women living with borderline ...
African Journals Online (AJOL)
Background: Borderline personality disorder is characterised by a pattern of instability in interpersonal relationships, self-image, affects and marked impulsivity. Objective: The objective is to define the central concept of “facilitation of self- empowerment”. Method: Analysis and synthesis reasoning methods as indicated by ...
Autonomic Impairment in Borderline Personality Disorder: A Laboratory Investigation
Weinberg, Anna; Klonsky, E. David; Hajcak, Greg
2009-01-01
Recent research suggests that emotional dysfunction in psychiatric disorders can be reflected in autonomic abnormalities. The present study examines sympathetic and parasympathetic autonomic nervous system activity in individuals with Borderline Personality Disorder (BPD) before, during, and following a social stressor task. Data were obtained…
Bloom, Jill Myerow; Woodward, Eva N; Susmaras, Teresa; Pantalone, David W
2012-09-01
Dialectical behavior therapy (DBT) is an empirically supported treatment for outpatients with borderline personality disorder. However, the utility of DBT strategies for inpatients with the disorder is unclear. This review summarizes and synthesizes findings from trials of DBT in inpatient settings. Multiple research databases were searched for articles published through June 2011 that reported on any implementation of DBT in an inpatient setting to address symptoms related to borderline personality disorder, including suicidal and self-injurious behavior. Eleven studies that reported pre- and posttreatment symptoms related to borderline personality disorder were evaluated. Studies indicated that many variations of standard DBT have been used in inpatient settings, including approaches that do not include phone consultation, that include group therapy only, and that vary in treatment duration (from two weeks to three months). Most studies reported reductions in suicidal ideation, self-injurious behaviors, and symptoms of depression and anxiety, whereas results for reducing anger and violent behaviors were mixed. Follow-up data indicated that symptom reduction was often maintained between one and 21 months posttreatment. On the basis of the evidence, the authors identify essential components of an inpatient DBT package and discuss its potential function as an "intensive orientation" to outpatient DBT services. There is considerable variation in the configuration and duration of DBT implementation for inpatients with borderline personality disorder. However, findings suggest that DBT may be effective in reducing symptoms related to borderline personality disorder in inpatient settings. Future research should standardize and systematically test inpatient DBT. (Psychiatric Services 63:881-888, 2012; doi: 10.1176/appi.ps.201100311).
Local differential geometry of null curves in conformally flat space-time
International Nuclear Information System (INIS)
Urbantke, H.
1989-01-01
The conformally invariant differential geometry of null curves in conformally flat space-times is given, using the six-vector formalism which has generalizations to higher dimensions. This is then paralleled by a twistor description, with a twofold merit: firstly, sometimes the description is easier in twistor terms, sometimes in six-vector terms, which leads to a mutual enlightenment of both; and secondly, the case of null curves in timelike pseudospheres or 2+1 Minkowski space we were only able to treat twistorially, making use of an invariant differential found by Fubini and Cech. The result is the expected one: apart from stated exceptional cases there is a conformally invariant parameter and two conformally invariant curvatures which, when specified in terms of this parameter, serve to characterize the curve up to conformal transformations. 12 refs. (Author)
Armenti, Nicholas A; Snead, Alexandra L; Babcock, Julia C
2018-02-01
Borderline and antisocial personality features relate to multiple externalizing behaviors, including intimate partner violence (IPV). However, not all individuals with borderline and antisocial traits perpetrate IPV. The strength of the personality-IPV link may be related to problematic substance use. We examined borderline and antisocial personality features, problematic substance use, and IPV in a community sample of couples. Positive relations between both borderline and antisocial features and IPV were stronger in conditions of high problematic alcohol use relative to low problematic alcohol use. Alcohol misuse may be an important factor to consider for IPV reduction in men with these personality features.
Physics in space-time with scale-dependent metrics
Balankin, Alexander S.
2013-10-01
We construct three-dimensional space Rγ3 with the scale-dependent metric and the corresponding Minkowski space-time Mγ,β4 with the scale-dependent fractal (DH) and spectral (DS) dimensions. The local derivatives based on scale-dependent metrics are defined and differential vector calculus in Rγ3 is developed. We state that Mγ,β4 provides a unified phenomenological framework for dimensional flow observed in quite different models of quantum gravity. Nevertheless, the main attention is focused on the special case of flat space-time M1/3,14 with the scale-dependent Cantor-dust-like distribution of admissible states, such that DH increases from DH=2 on the scale ≪ℓ0 to DH=4 in the infrared limit ≫ℓ0, where ℓ0 is the characteristic length (e.g. the Planck length, or characteristic size of multi-fractal features in heterogeneous medium), whereas DS≡4 in all scales. Possible applications of approach based on the scale-dependent metric to systems of different nature are briefly discussed.
Interpersonal Precipitants and Suicide Attempts in Borderline Personality Disorder
Brodsky, Beth S.; Groves, Shelly A.; Oquendo, Maria A.; Mann, J. John; Stanley, Barbara
2006-01-01
Borderline personality disorder (BPD) is often characterized by multiple low lethality suicide attempts triggered by seemingly minor incidents, and less commonly by high lethality attempts that are attributed to impulsiveness or comorbid major depression. The relationships among life events, impulsiveness, and type of suicidal behavior has hardly…
Sex bias in classifying borderline and narcissistic personality disorder
Braamhorst, W.; Lobbestael, J.; Emons, W.H.M.; Arntz, A.; Witteman, C.L.M.; Bekker, M.H.J.
2015-01-01
This study investigated sex bias in the classification of borderline and narcissistic personality disorders. A sample of psychologists in training for a post-master degree (N = 180) read brief case histories (male or female version) and made DSM classification. To differentiate sex bias due to sex
Wolke, Dieter; Schreier, Andrea; Zanarini, Mary C.; Winsper, Catherine
2012-01-01
Background: Abuse by adults has been reported as a potent predictor of borderline personality disorder (BPD). Unclear is whether victimisation by peers increases the risk of borderline personality symptoms. Method: The Avon Longitudinal Study of Parents and Children (ALSPAC) prospective, longitudinal observation study of 6050 mothers and their…
Treloar, Amanda Jane Commons; Lewis, Andrew J.
2009-01-01
This paper reviews the history of the recognition of borderline personality disorder as a clinical disorder, followed by a review of the contemporary practice of diagnosing borderline personality disorder in psychiatric settings. Many researchers have cautioned against the conflation of difficult patients with the diagnostic category of borderline…
Energy Technology Data Exchange (ETDEWEB)
Keller, Kai Johannes
2010-04-15
The present work contains a consistent formulation of the methods of dimensional regularization (DimReg) and minimal subtraction (MS) in Minkowski position space. The methods are implemented into the framework of perturbative Algebraic Quantum Field Theory (pAQFT). The developed methods are used to solve the Epstein-Glaser recursion for the construction of time-ordered products in all orders of causal perturbation theory. A solution is given in terms of a forest formula in the sense of Zimmermann. A relation to the alternative approach to renormalization theory using Hopf algebras is established. (orig.)
International Nuclear Information System (INIS)
Keller, Kai Johannes
2010-04-01
The present work contains a consistent formulation of the methods of dimensional regularization (DimReg) and minimal subtraction (MS) in Minkowski position space. The methods are implemented into the framework of perturbative Algebraic Quantum Field Theory (pAQFT). The developed methods are used to solve the Epstein-Glaser recursion for the construction of time-ordered products in all orders of causal perturbation theory. A solution is given in terms of a forest formula in the sense of Zimmermann. A relation to the alternative approach to renormalization theory using Hopf algebras is established. (orig.)
[Differential diagnosis between borderline personality disorder and bipolar disorder].
Herbst, Luis
2010-01-01
The relationship between bipolar disorder and borderline personality disorder remains controversial since in both conditions there are overlapping and similar symptomatic dimensions. Symptomatic dimensions suitable to subserve differential diagnosis are: mood, mood variability mode, and personal and family history. Characteristics of psychotic symptoms may also be useful in the differentiation. On the other hand, anxiety symptoms, neuropsychological profiles, neuro-imaging procedures and biomarkers seem not to contribute to differentiate between both diseases. The presentation of nonsuicidal self mutilation behavior can offer some differences between bipolar and borderline personality disorders, but both can coexist in clinical comorbid forms and do not significantly contribute to the differential diagnosis. Differential diagnosis is complicated by the fact that a low percentage of patients can experience comorbidity of both conditions. In this work we review all these issues, and particularly emphasize the importance of sitematically take into account the patient background, the course that follows his or her disorder, together with the outcome in response to medical decisions.
Fenning, Rachel M; Baker, Jason K; Baker, Bruce L; Crnic, Keith A
2014-06-01
A previous study suggested that mothers of 5-year-old children with borderline intellectual functioning displayed lower positive engagement with their children as compared with both mothers of typically developing children and mothers of children with significant developmental delays (Fenning, Baker, Baker, & Crnic, 2007). The current study integrated father data and followed these families over the subsequent 1-year period. Parent and child behavior were coded from naturalistic home observations at both waves. Results revealed that mothers of children with borderline intellectual functioning displayed a greater increase in negative-controlling parenting from child age 5 to 6 than did other mothers; fathers displayed more negative-controlling behavior in comparison to fathers of typically developing children. In addition, children with borderline intellectual functioning themselves exhibited a more significant escalation in difficult behavior than did typically developing children. Cross-lagged analyses for the sample as a whole indicated that maternal negative-controlling behavior predicted subsequent child difficulties, whereas negative paternal behavior was predicted by earlier child behavior. In conjunction with evidence from Fenning et al. (2007), these findings suggest a complex, dynamic, and systemic developmental pattern in the emotional behavior of families of children with borderline intellectual functioning. Implications and areas in need of additional research are discussed. PsycINFO Database Record (c) 2014 APA, all rights reserved.
Dysfunctional Affect Regulation : in borderline personality disorder and somatoform disorder
van Dijke, A.
2011-01-01
The aim of this dissertation was to provide a systematic exploration of the nature and distribution of dysfunctional affect regulation, its associated phenomena, and retrospectively reported potentially traumatizing events in 475 patients diagnosed with borderline personality disorder (BPD),
Gratz, Kim L.; Latzman, Robert D.; Tull, Matthew T.; Reynolds, Elizabeth K.; Lejuez, C. W.
2011-01-01
Most of the extant literature on borderline personality disorder has focused on the course, consequences, and correlates of this disorder among adults. However, little is known about childhood borderline personality (BP) features, or the factors associated with the emergence of BP pathology in childhood. A greater understanding of childhood BP…
Directory of Open Access Journals (Sweden)
mozafar Ghaffari
2014-01-01
Full Text Available Background : Cognitive emotion regulation plays an immense role to control mental disorders. The aim of this research was to study the relationship between cognitive emotion regulation styles and impulsivity and students, borderline personality disorders. Materials and Methods: Statistical samples of this study included 200 students of Pyam-e-Noor university. Cognitive Emotion Regulation Questionnaire (CERQ, Barrat Impulsivity Scale (BIS and Borderline Personality Scale (STB have been used for data collection. The data was analyzed using Pearson correlation coefficient and multiple regression analysis. Results: Between variable of borderline personality disorder, and styles self-blame, rumination, catastrophizing and blaming others there was a positive correlation, but a negative relationship with acceptance, positive refocusing and positive reappraisal styles was observed (p>0.05. There was a positive relationship between variable of impulsivity with styles of self-blame, rumination, catastrophizing and blaming others, but had a negative relationship with acceptance, positive refocusing and positive reappraisal styles (p>0.05. The results of multi-variable correlation coefficient with Enter method indicated that cognitive emotion regulation styles play a role in explaining borderline personality disorder (R2= 0.646 and impulsivity (R2= 0.645. Conclusion: Training the effective strategies of cognitive emotion regulation should be considered as a part of the intervention in the treatment of impulsivity and borderline personality disorder.
Arbabi, Mohammad; Paast, Negin; Karim, Hamid Reza; Faghfori, Sara; Memari, Amir Hossein
2016-11-30
The aim of the present study was to determine whether patients with borderline personality disorder (BPD) show any neurological soft signs compared to healthy controls. Furthermore we sought to examine the role of common symptoms related to BPD, such as depression, anxiety or impulsivity, in association with neurological soft signs. Thirty patients with borderline personality disorder and thirty hospital-based controls were examined for neurological soft signs. The total score of neurological soft signs in BPD was significantly higher than controls. In terms of subscales, patients had higher scores in Sensory Integration and Motor Coordination and other neurological soft signs compared to control group. Multiple regression analysis showed that the impulsivity score was the best significant predictor of neurological soft signs in BPD. The increase of neurological soft signs in patients with BPD may address a non-focal neurological dysfunction in borderline personality disorder. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
Bjørnholt, Sarah Marie; Kjaer, Susanne Krüger; Nielsen, Thor Schütt Svane; Jensen, Allan
2015-01-01
Do fertility drugs increase the risk for borderline ovarian tumours, overall and according to histological subtype? The use of any fertility drug did not increase the overall risk for borderline ovarian tumours, but an increased risk for serous borderline ovarian tumours was observed after the use of progesterone. Many epidemiological studies have addressed the connection between fertility drugs use and risk for ovarian cancer; most have found no strong association. Fewer studies have assessed the association between use of fertility drugs and risk for borderline ovarian tumours, and the results are inconsistent. A retrospective case-cohort study was designed with data from a cohort of 96 545 Danish women with fertility problems referred to all Danish fertility clinics in the period 1963-2006. All women were followed for first occurrence of a borderline ovarian tumour from the initial date of infertility evaluation until a date of migration, date of death or 31 December 2006, whichever occurred first. The median length of follow-up was 11.3 years. Included in the analyses were 142 women with borderline ovarian tumours (cases) and 1328 randomly selected sub-cohort members identified in the cohort during the follow-up through 2006. Cases were identified by linkage to the Danish Cancer Register and the Danish Register of Pathology by use of personal identification numbers. To obtain information on use of fertility drugs, hospital files and medical records of infertility-associated visits to all Danish fertility clinics were collected and supplemented with information from the Danish IVF register. We used case-cohort techniques to calculate rate ratios (RRs) and corresponding 95% confidence intervals (CIs) for borderline ovarian tumours, overall and according to histological subtype, associated with the use of any fertility drug or five specific groups of fertility drugs: clomiphene citrate, gonadotrophins (human menopausal gonadotrophins and follicle
Soler, Joaquim; Pascual, Juan Carlos; Campins, Josefa; Barrachina, Judith; Puigdemont, Dolors; Alvarez, Enrique; Pérez, Victor
2005-06-01
The aim of this study was to determine the efficacy and safety of dialectical behavior therapy plus olanzapine compared with dialectical behavior therapy plus placebo in patients with borderline personality disorder. Sixty patients with borderline personality disorder were included in a 12-week, double-blind, placebo-controlled study. All patients received dialectical behavior therapy and were randomly assigned to receive either olanzapine or placebo following a 1-month baseline period. Seventy percent of the patients completed the 4-month trial. Combined treatment showed an overall improvement in most symptoms studied in both groups. Olanzapine was associated with a statistically significant improvement over placebo in depression, anxiety, and impulsivity/aggressive behavior. The mean dose of olanzapine was 8.83 mg/day. A combined psychotherapeutic plus pharmacological approach appears to lower dropout rates and constitutes an effective treatment for borderline personality disorder.
Swann, Alan C; Lijffijt, Marijn; Lane, Scott D; Steinberg, Joel L; Moeller, F Gerard
2013-06-01
Interactions between characteristics of bipolar and Axis II cluster B disorders are clinically and diagnostically challenging. Characteristics associated with personality disorders may be dimensional aspects of bipolar disorder. We investigated relationships among antisocial personality disorder (ASPD) or borderline personality disorder symptoms, impulsivity, and course of illness in bipolar disorder. Subjects with bipolar disorder were recruited from the community. Diagnosis was by structured clinical interview for DSM-IV (SCID-I and -II), psychiatric symptom assessment by the change version of the schedule for affective disorders and schizophrenia (SADS-C), severity of Axis II symptoms by ASPD and borderline personality disorder SCID-II symptoms, and impulsivity by the Barratt impulsiveness scale (BIS-11). ASPD and borderline symptoms were not related to clinical state or affective symptoms. Borderline symptoms correlated with BIS-11 impulsivity scores, and predicted history of suicide attempts independently of the relationship to impulsivity. ASPD symptoms were more strongly related to course of illness, including early onset, frequent episodes, and substance-related disorders. These effects persisted after allowance for gender and substance-use disorder history. Personality disorder symptoms appear to be dimensional, trait-like characteristics of bipolar disorder. ASPD and Borderline symptoms are differentially related to impulsivity and course of illness. Copyright © 2012 Elsevier B.V. All rights reserved.
Swann, Alan C.; Lijffijt, Marijn; Lane, Scott D.; Steinberg, Joel L.; Moeller, F. Gerard
2012-01-01
Background Interactions between characteristics of bipolar and Axis II cluster B disorders are clinically and diagnostically challenging. Characteristics associated with personality disorders may be dimensional aspects of bipolar disorder. We investigated relationships among antisocial personality disorder (ASPD) or borderline personality disorder symptoms, impulsivity, and course of illness in bipolar disorder. Methods Subjects with bipolar disorder were recruited from the community. Diagnosis was by Structured Clinical Interview for DSM-IV (SCID-I and –II), psychiatric symptom assessment by the Change version of the Schedule for Affective Disorders and Schizophrenia (SADS-C), severity of axis II symptoms by ASPD and borderline personality disorder SCID-II symptoms, and impulsivity by the Barratt Impulsiveness Scale (BIS-11). Results ASPD and borderline symptoms were not related to clinical state or affective symptoms. Borderline symptoms correlated with BIS-11 impulsivity scores, and predicted history of suicide attempts independently of the relationship to impulsivity. ASPD symptoms were more strongly related to course of illness, including early onset, frequent episodes, and substance-related disorders. These effects persisted after allowance for gender and substance-use disorder history. Conclusions Personality disorder symptoms appear to be dimensional, trait-like characteristics of bipolar disorder. ASPD and Borderline symptoms are differentially related to impulsivity and course of illness. PMID:22835849
Keng, Shian-Ling; Wong, Yun Yi
2017-01-01
Background Linehan’s biosocial theory posits that parental invalidation during childhood plays a role in the development of borderline personality disorder symptoms later in life. However, little research has examined components of the biosocial model in an Asian context, and variables that may influence the relationship between childhood invalidation and borderline symptoms. Self-compassion is increasingly regarded as an adaptive way to regulate one’s emotions and to relate to oneself, and m...
Therapeutic self-disclosure with borderline patients.
Wilkinson, S M; Gabbard, G O
1993-01-01
The therapeutic use of countertransference disclosure as a means of highlighting the borderline patient's intrapsychic and interpersonal use of the therapist is discussed.Countertransference disclosure is narrowly defined as a form of clinical honesty that focuses on the therapist's experience of the patient in the here-and-now moment of the session. The effects of disclosure on transference exploration, neutrality, and patient revelations are explored through examination of detailed process notes of therapy sessions.Technical issues such as indirect versus direct disclosure and responses to direct questions are also addressed.
Optical Properties of Quantum Vacuum. Space-Time Engineering
International Nuclear Information System (INIS)
Gevorkyan, A. S.; Gevorkyan, A. A.
2011-01-01
The propagation of electromagnetic waves in the vacuum is considered taking into account quantum fluctuations in the limits of Maxwell-Langevin (ML) type stochastic differential equations. For a model of fluctuations, type of 'white noise', using ML equations a partial differential equation of second order is obtained which describes the quantum distribution of virtual particles in vacuum. It is proved that in order to satisfy observed facts, the Lamb Shift etc, the virtual particles should be quantized in unperturbed vacuum. It is shown that the quantized virtual particles in toto (approximately 86 percent) are condensed on the 'ground state' energy level. It is proved that the extension of Maxwell electrodynamics with inclusion of quantum vacuum fluctuations may be constructed on a 6D space-time continuum, where 4D is Minkowski space-time and 2D is a compactified subspace. In detail is studied of vacuum's refraction indexes under the influence of external electromagnetic fields.
Zimmerman, Mark; Martinez, Jennifer H; Morgan, Theresa A; Young, Diane; Chelminski, Iwona; Dalrymple, Kristy
2013-09-01
Because of the potential treatment implications, it is clinically important to distinguish between bipolar II depression and major depressive disorder with comorbid borderline personality disorder. The high frequency of diagnostic co-occurrence and resemblance of phenomenological features has led some authors to suggest that borderline personality disorder is part of the bipolar spectrum. Few studies have directly compared patients with bipolar disorder and borderline personality disorder. In the present study from the Rhode Island Methods to Improve Diagnostic Assessment and Services project, we compared these 2 groups of patients on demographic, clinical, and family history variables. From December 1995 to May 2012, 3,600 psychiatric patients presenting to the outpatient practice at Rhode Island Hospital (Providence, Rhode Island) were evaluated with semistructured diagnostic interviews for DSM-IV Axis I and Axis II disorders. The focus of the present study is the 206 patients with DSM-IV major depressive disorder and borderline personality disorder (MDD-BPD) and 62 patients with DSM-IV bipolar II depression without borderline personality disorder. The patients with MDD-BPD were significantly more often diagnosed with posttraumatic stress disorder (P depression had a significantly higher morbid risk for bipolar disorder in their first-degree relatives than the MDD-BPD patients (P depression and major depressive disorder with comorbid borderline personality disorder differed on a number of clinical and family history variables, thereby supporting the validity of this distinction. © Copyright 2013 Physicians Postgraduate Press, Inc.
On thick domain walls in general relativity
Goetz, Guenter; Noetzold, Dirk
1989-01-01
Planar scalar field configurations in general relativity differ considerably from those in flat space. It is shown that static domain walls of finite thickness in curved space-time do not possess a reflection symmetry. At infinity, the space-time tends to the Taub vacuum on one side of the wall and to the Minkowski vacuum (Rindler space-time) on the other. Massive test particles are always accelerated towards the Minkowski side, i.e., domain walls are attractive on the Taub side, but repulsive on the Minkowski side (Taub-vacuum cleaner). It is also proved that the pressure in all directions is always negative. Finally, a brief comment is made concerning the possibility of infinite, i.e., bigger than horizon size, domain walls in our universe. All of the results are independent of the form of the potential V(phi) greater than or equal to 0 of the scalar field phi.
International Nuclear Information System (INIS)
Kobayashi, Satoshi; Matsui, Osamu; Gabata, Toshifumi; Koda, Wataru; Minami, Tetsuya; Ryu, Yasuji; Kozaka, Kazuto; Kitao, Azusa
2012-01-01
Objectives: To analyze intranodular signal intensity pattern of hypovascular high-risk borderline lesions of HCC that illustrate multi-step hepatocarcinogenesis within the nodule on Gd–EOB–DTPA-enhanced MRI. Methods: A total of 73 nodules showing hypervascular foci in hypovascular high-risk borderline lesions identified by angiography-assisted CT were included in this study. The intranodular signal intensities of both the hypervascular foci and the hypovascular high-risk borderline lesions were evaluated on hepatobiliary-phase EOB-enhanced MRI obtained 20 min after intravenous injection of contrast media. Results: Among 59 hypervascular foci within hypointense hypovascular high-risk borderline lesions, 6 showed more hypointensity, 32 isointensity, and 21 hyperintensity compared to the surrounding hypointense, hypovascular portion of the nodules. Among 14 hypervascular foci within isointense hypovascular high-risk borderline lesions, 5 showed isointensity, and 9 hypointensity compared to the surrounding isointense hypovascular high-risk borderline lesions. No hypervascular foci showed hyperintensity compared to the surrounding isointense hypovascular high-risk borderline lesions. Conclusions: In most of the hypovascular high-risk borderline lesions containing hypervascular foci within the nodule, the signal intensity was decreased in hypervascular foci as compared with hypovascular high-risk borderline lesions and the surrounding background liver parenchyma. This supports the concept of signal intensity decrease during the dedifferentiation process in multistep hepatocarcinogenesis. However, around 30% of the nodules did not follow this rule, and hypervascular foci showed hyperintensity relative to the hypovascular high-risk borderline lesions.
Nouwens, P J G; Smulders, N B M; Embregts, P J C M; van Nieuwenhuizen, C
2017-12-01
Among persons with a mild intellectual disability or borderline intellectual functioning, differences in their characteristics imply that a differentiated approach is required to meet their needs. This retrospective study examined whether the history of support/treatment programs and the type of healthcare providers involved matched the specific support needs of persons with a mild intellectual disability or borderline intellectual functioning. Five (previously identified) profiles of persons with a mild intellectual disability or borderline intellectual functioning were used to investigate to what extent the support needs of this group had been met. For the 250 persons with mild intellectual disability or borderline intellectual functioning who matched these five profiles, data were collected retrospectively from their case files. Persons with mild intellectual disability or borderline intellectual functioning received a very similar amount and type of support/treatment programs. Differences between the profiles were found for non-verbal therapy, residential treatment and contacts with social work. Regarding the type of healthcare providers involved, differences between the profiles emerged for specialised intellectual disability services, youth services and specialised addiction services. The support programs for a heterogeneous population of persons with mild intellectual disability or borderline intellectual functioning seem to be suboptimal, indicating that more differentiation is required in the services offered to these individuals. © 2017 MENCAP and International Association of the Scientific Study of Intellectual and Developmental Disabilities and John Wiley & Sons Ltd.
Kalpakci, Allison; Venta, Amanda; Sharp, Carla
2014-01-01
Central to most theories of borderline personality disorder (BPD) is the notion that the family environment interacts with genetically-based vulnerabilities to influence the development of BPD, with particular attention given to risk conferred by conflictual familial relations. However, the extent to which family conflict may relate to the development of BPD via related interpersonal beliefs is currently unknown. This study sought to test the hypothesis that the concurrent relation between conflictual family relations and borderline features in female college students is explained by beliefs associated with real or perceived unmet interpersonal needs (captured by Joiner's [2005] Interpersonal Psychological Theory, specifically thwarted belongingness and perceived burdensomeness). The sample included 267 female undergraduates ages 18-25 years (M = 20.86; SD = 1.80). Level of borderline personality features, unmet interpersonal needs, and family conflict were assessed. Bivariate analyses revealed significant relations between both thwarted belongingness and perceived burdensomeness, conflictual family relations, and borderline features. Multivariate analyses revealed that thwarted belongingness and perceived burdensomeness both mediated the relation between family conflict and borderline personality features, thus supporting a multiple mediation model. This cross-sectional study is a preliminary step towards confirming the broad theoretical hypothesis that conflictual family relations relate to beliefs about thwarted belongingness and perceived burdensomeness, which, in turn, relate to borderline personality pathology. Limitations and areas of future research are discussed.
Inhibition errors in borderline personality disorder with psychotic-like symptoms.
Grootens, K.P.; Luijtelaar, E.L.J.M. van; Buitelaar, J.K.; Laan, A. van der; Hummelen, J.W.; Verkes, R.J.
2008-01-01
BACKGROUND: The aim of this study was to examine whether patients with borderline personality disorder (BPD) have deficits in cognitive inhibition as measured with an anti-saccade eye task similar to patients with schizophrenia (Sz). Furthermore, we investigated whether these inhibition errors were
Borderline Personality Disorder: A Dysregulation of the Endogenous Opioid System?
Bandelow, Borwin; Schmahl, Christian; Falkai, Peter; Wedekind, Dirk
2010-01-01
The neurobiology of borderline personality disorder (BPD) remains unclear. Dysfunctions of several neurobiological systems, including serotoninergic, dopaminergic, and other neurotransmitter systems, have been discussed. Here we present a theory that alterations in the sensitivity of opioid receptors or the availability of endogenous opioids…
Facilitation of self-empowerment of women living with borderline ...
African Journals Online (AJOL)
N. Ntshingila
work it was discovered that borderline personality disorder patients had a ... parts of my past that I don't like and I understand a lot of things like why I do things that I ... in the now and experience a bit of positivity in me” Participant# 1. “My life is ...
Epidemiologic and molecular characteristics of borderline and malignant epithelial ovarian tumors
Bastos, Eugenia Maria Chaves De Moraes
Data from the Cancer and Steroid Hormone Study, a multicenter, population-based, case-control study were used to identify risk factors for epithelial ovarian cancer according to tumor behavior, histologic types, as well as p53 expression. Cases were women between 20 to 54 years old diagnosed with epithelial ovarian cancer from 1980 to 1982. Controls were women selected by random digit dialing. Tumor samples were analyzed for p53 overexpression using immunohistochemistry. Case-case and case-control conditional logistic regression models matched on age and diagnosing centers were used to calculate odds ratios (OR's) and 95% confidence intervals (CI's) for borderline, malignant, mucinous, and nonmucinous tumors, and p53 positive and p53 negative cases. The OR's for high number of lifetime ovulatory cycles (376-533 compared with less than 234) were 3.1 (95% CI 1.6-6.1) for malignant and 1.4 (95% CI 0.5-3.7) for borderline cases. The high number of ovulatory cycles was also a strong risk factor among nonmucinous cases. OR's for current and recent ex-smokers compared with never smokers were 2.8 (95% CI 1.7-4.8) for mucinous and 0.9 (95% CI 0.7-1.1) for nonmucinous types. Infertility showed a positive association with borderline ovarian cancer. Family history of ovarian or breast cancer was positively associated with malignant and nonmucinous cases. Parity had an inverse association with malignant ovarian cancer cases. When cases were subdivided by p53 results, the OR for tobacco smoking and p53 positive ovarian cancer was elevated for mucinous (OR = 3.9; 95% CI 0.8-18) at localized stage. Alcohol use showed a positive association with p53 positive malignant cases at advanced stage (OR = 2.0; 95% CI 1.2-3.2) and with p53 positive nonmucinous cases at advanced stage (OR = 2.1; 95% CI 1.2-3.4). A positive association between high number of ovulatory cycles and p53 positive malignant cases was observed in cases with localized stage (OR = 6.6; 95% CI 1.0-45) and advanced
Major Clinical Impact of Platinum-Based Chemotherapy in a Patient with a Borderline Ovarian Cancer
Directory of Open Access Journals (Sweden)
Jian Chen
2009-09-01
Full Text Available A patient with extensive and painful chest wall involvement from a metastatic borderline cancer of the ovary was treated with a carboplatin plus paclitaxel chemotherapy regimen. She achieved a rather dramatic improvement of pain control, a significant biochemical response with 75% reduction of the CA-125 antigen level, but only limited radiographic tumor regression. This experience emphasizes the potential clinical utility of platinum-based cytotoxic chemotherapy in the setting of symptomatic advanced borderline ovarian cancer.
Integrating Early Intervention for Borderline Personality Disorder and Mood Disorders.
Chanen, Andrew M; Berk, Michael; Thompson, Katherine
2016-01-01
Borderline personality disorder (BPD) has been demonstrated to be a reliable and valid construct in young people (adolescents and young adults). Both borderline- and mood-related psychopathology become clinically apparent from puberty through to young adulthood, frequently co-occur, can reinforce one another, and can be difficult to differentiate clinically. This Gordian knot of overlapping clinical features, common risk factors, and precursors to both BPD and mood disorders complicates clinical assessment, prevention, and treatment. Regardless of whether an individual crosses an arbitrary diagnostic threshold, a considerable proportion of young people with borderline- and mood-related psychopathology will develop significant and persistent functional, vocational, and interpersonal impairment and disability during this critical risk and developmental period. There is a clear need for early intervention, but spurious diagnostic certainty risks stigma, misapplication of diagnostic labels, inappropriate treatment, and unfavorable outcomes. This article aims to integrate early intervention for BPD and mood disorders in the clinical context of developmental and phenomenological change and evolution. "Clinical staging," similar to disease staging in general medicine, is presented as a pragmatic, heuristic, and trans-diagnostic framework to guide prevention and intervention. It acknowledges that the early stages of these disorders cannot be disentangled sufficiently to allow for disorder-specific preventive measures and early interventions. Clinical staging defines an individual's location along the continuum of the evolving temporal course of a disorder. Such staging aids differentiation of early or milder clinical phenomena from those that accompany illness progression and chronicity, and suggests the application of appropriate and proportionate intervention strategies.
Outcalt, Jared; Dimaggio, Giancarlo; Popolo, Raffaele; Buck, Kelly; Chaudoin-Patzoldt, Kelly A; Kukla, Marina; Olesek, Kyle L; Lysaker, Paul H
2016-01-01
Borderline personality disorder traits have been observed to be linked with both insecure attachment styles as well as deficits in mentalizing and metacognition. Less is known, however, about how attachment style does or does not interact with deficits in mentalizing and metacognition to create, sustain, or influence levels of borderline personality disorder traits. In this study, we examined the hypothesis that metacognitive mastery, which is the ability to use knowledge about mental states of self and others to cope with distress and solve social problems, moderates the relationship of anxious attachment style with the severity of borderline personality disorder traits. Concurrent assessments were gathered of metacognitive mastery using the Metacognitive Assessment Scale Abbreviated, anxious attachment style using the Experiences of in Close Relationships Scale, and borderline personality disorder traits using the Structured Clinical Interview for DSM-IV Axis II Disorders. Participants were 59 adults in an early phase of recovery from substance use disorders in a residential setting. Multiple regression revealed that metacognitive mastery moderated the relationship of anxious attachment style with the number of borderline personality disorder traits. A median split of the anxious attachment and metacognitive mastery scores was performed yielding 4 groups. An analysis of covariance revealed that participants with higher levels of anxious attachment and poorer metacognitive mastery had more borderline personality disorder traits did than the other groups after controlling for levels of psychopathology. Insecure attachment may be associated with higher number of borderline personality disorder traits in the presence of deficits in metacognitive mastery. Patients with substance use and borderline personality disorder traits may benefit from treatment which addresses metacognitive mastery. Published by Elsevier Inc.
International Nuclear Information System (INIS)
Shabbir, Ghulam; Khan, Suhail; Ali, Amjad
2011-01-01
In this paper we classify spatially homogeneous rotating space-times according to their teleparallel Killing vector fields using direct integration technique. It turns out that the dimension of the teleparallel Killing vector fields is 5 or 10. In the case of 10 teleparallel Killing vector fields the space-time becomes Minkowski and all the torsion components are zero. Teleparallel Killing vector fields in this case are exactly the same as in general relativity. In the cases of 5 teleparallel Killing vector fields we get two more conservation laws in the teleparallel theory of gravitation. Here we also discuss some well-known examples of spatially homogeneous rotating space-times according to their teleparallel Killing vector fields. (general)
Borderline personality disorder and comorbid addiction: epidemiology and treatment.
Kienast, Thorsten; Stoffers, Jutta; Bermpohl, Felix; Lieb, Klaus
2014-04-18
Borderline personality disorder (BPD) affects 2.7% of adults. About 78% of adults with BPD also develop a substance-related disorder or addiction at some time in their lives. These persons are more impulsive and clinically less stable than BPD patients without substance dependency. They display suicidal behavior to a greater extent, drop out of treatment more often, and have shorter abstinence phases. The combination of borderline personality disorder with addiction requires a special therapeutic approach. This review is based on a selective literature search about the treatment of patients with BPD and addiction, with particular attention to Cochrane Reviews and randomized controlled trials (RCT). The available evidence is scant. In two RCTs, Dialectical Behavior Therapy for Substance Use Disorders (DBT-SUD) was found to improve patients' overall functional level (standardized mean difference, 1.07-1.78) and to increase the number of abstinence days (effect strength [ES], 1.03) and negative urine samples (ES, 0.75). Dual focus schema therapy (DFST) was evaluated in three RCTs. Because of methodological problems, however, no useful quantitative comparison across trials is possible. In one RCT, dynamic deconstructive psychotherapy (DDP) was found to have only a moderate, statistically insignificant effect. Only a single study provides data about potentially helpful drug therapy over the intermediate term. Patients with borderline personality disorder and comorbid addiction should be treated as early as possible for both conditions in a thematically hierarchical manner. There is no evidence for any restriction on drug therapy to prevent recurrent addiction in these patients. The psychotherapeutic techniques that can be used (despite the currently inadequate evidence base) include DBT-SUD, DFST, and DDP. These patients need qualified expert counseling in choosing a suitable type of psychotherapy. Specific treatment is available in only a few places, and the relevant
Use of dialectical behavior therapy in borderline personality disorder: a view from residency.
Sharma, Binali; Dunlop, Boadie W; Ninan, Philip T; Bradley, Rebekah
2007-01-01
The authors describe the use of dialectical behavior therapy (DBT) in treating borderline personality disorder during psychiatry residency, and assess the status of DBT education within psychiatry residencies in the United States. The authors present a patient with borderline personality disorder treated by a resident using DBT, along with perspectives from the resident's supervisors. Additionally, self-report surveys inquiring about the attitudes and experiences of residency directors and PGY-4 residents regarding DBT were sent to program directors with available e-mail addresses on FREIDA online. The DBT method employed by the resident had to be modified to fit the constraints of a residency program. The patient in therapy had a tumultuous course, ultimately resulting in the discontinuation of treatment. Survey results suggested an underemphasis on the education and use of DBT during residency, though the strength of this conclusion is limited by the small proportion of surveys returned. Achieving the efficacy of DBT-based treatment of borderline personality disorder reported in the literature in the setting of a residency program is challenging. Greater exposure to DBT during residency may increase residents' skills in using the technique and the likelihood that they will use it after residency.
Causal fermion systems: A quantum space-time emerging from an action principle
Energy Technology Data Exchange (ETDEWEB)
Finster, Felix [Mathematics Department, University of Regensburg (Germany)
2013-07-01
Causal fermion systems provide a general framework for the formulation of relativistic quantum theory. A particular feature is that space-time is a secondary object which emerges by minimizing an action. The aim of the talk is to give a simple introduction, with an emphasis on conceptual issues. We begin with Dirac spinors in Minkowski space and explain how to formulate the system as a causal fermion system. As an example in curved space-time, we then consider spinors on a globally hyperbolic space-time. An example on a space-time lattice illustrates that causal fermion systems also allow for the description of discrete space-times. These examples lead us to the general definition of causal fermion systems. The causal action principle is introduced. We outline how for a given minimizer, one has notions of causality, connection and curvature, which generalize the classical notions and give rise to a proposal for a ''quantum geometry''. In the last part of the talk, we outline how quantum field theory can be described in this framework and discuss the relation to other approaches.
Relativity and the dimensionality of the world
2007-01-01
All physicists would agree that one of the most fundamental problems of the 21st century physics is the dimensionality of the world. In the four-dimensional world of Minkowski (or Minkowski spacetime) the most challenging problem is the nature of the temporal dimension. In Minkowski spacetime it is merely one of the four dimensions, which means that it is entirely given like the other three spacial dimensions. If the temporal dimension were not given in its entirety and only one constantly changing moment of it existed, Minkowski spacetime would be reduced to the ordinary three-dimensional space. But if the physical world, represented by Minkowski spacetime, is indeed four-dimensional with time being the fourth dimension, then such a world is drastically different from its image based on our perceptions. Minkowski four-dimensional world is a block Universe, a frozen world in which nothing happens since all moments of time are given ‘at once', which means that physical bodies are four-dimensional worldtubes ...
Hudziak, J J; Boffeli, T J; Kreisman, J J; Battaglia, M M; Stanger, C; Guze, S B; Kriesman, J J
1996-12-01
The criteria for borderline personality disorder seem to select patients with very high rates of Briquet's syndrome (hysteria), somatization disorder, antisocial personality disorder, and substance abuse disorders. This study was undertaken to determine whether systematic assessment of patients with borderline personality disorder would reveal characteristic features of that condition which would distinguish it from these other disorders. Eighty-seven white female patients (75 in St. Louis and 12 in Milan, Italy) who had borderline personality disorder according to both the DSM-III-R criteria and the Revised Diagnostic Interview for Borderlines were further examined with the DSM-III-R Checklist and the Perley-Guze Hysteria Checklist to determine their patterns of psychiatric comorbidity. Every patient had at least one additional DSM diagnosis. Patients in St. Louis and Milan averaged five and four additional diagnoses, respectively. Eighty-four percent of the patients in St. Louis met criteria for either somatization disorder, Briquet's syndrome, antisocial personality disorder, or substance abuse disorders. Patterns of comorbidity for panic (51%), generalized anxiety disorder (55%), and major depression (87%) in St. Louis were consistent with those in other studies. The data indicate that the boundaries for the borderline condition are not specific and identify a high percentage of patients with these other disorders. Furthermore, the comorbidity profiles closely resemble the psychiatric profiles of patients with these disorders. If the borderline syndrome is meant to include all of these disorders, its usefulness as a diagnosis is limited. Until the fundamental features of borderline personality disorder that distinguish it from the others are identified, it is recommended that clinicians carefully assess patients for these other diagnoses. Efforts should be made to change the borderline personality disorder criteria by shifting away from overlap with the
The stochastic versus the Euclidean approach to quantum fields on a static space-time
International Nuclear Information System (INIS)
De Angelis, G.F.; de Falco, D.
1986-01-01
Equations are presented which modify the definition of the Gaussian field in the Rindler chart in order to make contact with the Wightman state, the Hartle-Hawking state, and the Euclidean field. By taking Ornstein-Uhlenbeck processes the authors have chosen, in the sense of stochastic mechanics, to place precisely the Fulling modes in their harmonic oscillator ground state. In this respect, together with the periodicity of Minkowski space-time, the authors observe that the covariance of the Ornstein-Uhlenbeck process can be obtained by analytical continuation of the Wightman function of the harmonic oscillator at zero temperature
Dependent personality features in a complex case of borderline personality disorder.
Nirestean, Tudor; Lukacs, Emese; Nirestean, Aurel; Gabos Grecu, Iosif
2016-11-01
Borderline personality disorder is a complex disease model as it encompasses a diversity of pathological personality traits and psychopathological symptoms. It is not surprising, therefore, that it is often manifested by personality disorders across all three clusters and accompanied by other mental (Axis I) disorders. This melange makes both psychological treatment and pharmacotherapy especially challenging, and this paper describes the case of a particularly complex case of a 33-year-old Romanian patient, who has a history of severe deprivation in childhood, mood and substance use disorder in association with borderline pathology. In the course of treatment from many sources and interventions, it has become clear that dependence is a key component of the pathology and has been rewarded with a degree of success in management. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.
The model of the relativistic particle with torsion
International Nuclear Information System (INIS)
Plyushchay, M.S.
1991-01-01
The model of the relativistic particle with torsion, whose action appears in the Bose-Fermi transmutation mechanism, is canonically quantized in the Minkowski and euclidean spaces. In the Minkowski space there are massive, massless and tachyonic states in the spectrum of the model. In the massive sector the spectrum contains an infinite number of states, whose spin can take integer, half-integer, or fractional values. In the euclidean space, the spectrum is finite and the spin can only be integer, or half-integer. The reasons for the differences of the quantum theory of the model in the two spaces are elucidated. (orig.)
Coset space compactification of the field theory limit of a heterotic string
Energy Technology Data Exchange (ETDEWEB)
Foda, O.; Helayel-Neto, J.A.
1986-07-01
The D = 10 - E/sub 8/xE/sub 8/ field theory limit of the heterotic string is compactified on the non-symmetric coset space Sp(4)/SU(2) xU(1) that is known in the limit of decoupled gravity to give three standard fermion generations, with SU(5)xSU(3)sub(F)xU(1)sub(F) as a gauge group in D = 4. Allowing for non-vanishing fermion bilinear condensates, and assuming the conventional form of the supersymmetry transformations, the presence of a family of N = 1 supersymmetric background field configurations is proved. This requires the non-compact space to be flat: (Minkowski)/sup 4/, while the 3-form Hsub(MNP) is non-vanishing and proportional to the torsion on the internal manifold. All equations of motion, including that of the dilation, are satisfied.
2013-01-01
Background Screening scales for bipolar disorder including the Mood Disorder Questionnaire (MDQ) and Bipolar Spectrum Diagnostic Scale (BSDS) have been plagued by high false positive rates confounded by presence of borderline personality disorder. This study examined the accuracy of these scales for detecting bipolar disorder among patients referred for eating disorders and explored the possibility of simultaneous assessment of co-morbid borderline personality disorder. Methods Participants were 78 consecutive female patients who were referred for evaluation of an eating disorder. All participants completed the mood and eating disorder sections of the SCID-I/P and the borderline personality disorder section of the SCID-II, in addition to the MDQ and BSDS. Predictive validity of the MDQ and BSDS was evaluated by Receiver Operating Characteristic analysis of the Area Under the Curve (AUC). Results Fifteen (19%) and twelve (15%) patients fulfilled criteria for bipolar II disorder and borderline personality disorder, respectively. The AUCs for bipolar II disorder were 0.78 (MDQ) and 0.78 (BDSD), and the AUCs for borderline personality disorder were 0.75 (MDQ) and 0.79 (BSDS). Conclusions Among patients being evaluated for eating disorders, the MDQ and BSDS show promise as screening questionnaires for both bipolar disorder and borderline personality disorder. PMID:23443034
Left ventricular mass in borderline hypertension assessed by echo cardiography
International Nuclear Information System (INIS)
Mezzasalma, L.; Ghione, S.; Palonebo, C.
1989-01-01
The relationship between clinical measurement of blood pressure (BP) and left ventricular hypertrophy in arterial hypertension appears to be weak in most studies. On the contrary, stronger correlations with target organ damage in general, and left ventricular hypertrophy in particular, have been reported for blood pressure measurements obtained by ambulatory monitoring; this finding may indicate a possible role for blood pressure response to naturally occurring stresses in determining left ventricular hypertrophy. Aim of this study was to investigate, in 18 patients with borderline arterial hypertension, the relationships between echocardiographically assessed left ventricular mass and, respectively, casual BP and BP responses to some standardized stress tests. Only three patients had a diastolic wall thickness of the interventricular septum and of the posterior wall ≥1.2 cm and none had a pathologically increased left ventricular mass index. The following statistically significant correlations were found: casual diastolic BP vs. left ventricular mass index (r=0.53, p<0.02), systolic BP response to bicycle exercise test vs. left ventricular mass index (r=0.55, p<0.05). Multiple regression analysis showed that almost fifty percent of the variability of left ventricular mass index could be predicted by these two BP measurements. These findings suggest that besides the chronically increased afterload, also the transient hypertensive responses to naturally occuring physical stresses may have a role in determining the extent of cardiac structural changes in borderline hypertensive patients. In addition, they indicate a direct relation between left ventricular mass and blood pressure levels also in borderline hypertension, as previously shown for established hypertension, despite the fact that left ventricular hypertrophy represents only an occasional finding in early stages of hypertension
Directory of Open Access Journals (Sweden)
Varga Albert
2011-06-01
Full Text Available Abstract Background the clinical decision making could be difficult in patients with borderline lesions (visually assessed stenosis severity of 30 to 50% of the left main coronary artery (LM. The aim of the study was to evaluate the relationship between transthoracic Doppler (TTDE peak diastolic flow velocity (PDV and intravascular ultrasound (IVUS measurements in the assessment of angiographically borderline LM lesions. Methods 27 patients (mean age 64 ± 8 years, 21 males with borderline LM stenosis referred for IVUS examination were included in the study. We performed standard IVUS with minimal lumen area (MLA and plaque burden (PB measurement and routine quantitative coronary angiography (QCA with diameter stenosis (%DS and area stenosis (%AS assessment in all. During TTDE, resting PDV was measured in the LM. Results interpretable Doppler signal could be obtained in 24 patients (88% feasibility; therefore these patients entered the final analysis. MLA was 7.1 ± 2.7 mm2. TTDE measured PDV correlated significantly with IVUS-derived MLA (r = -0.46, p 2 LM stenosis. Conclusion In angiographically borderline LM disease, resting PDV from transthoracic echocardiography is increased in presence of increased plaque burden by IVUS. TTDE evaluation might be a useful adjunct to other invasive and non-invasive methods in the assessment of borderline LM lesions. Further, large scale studies are needed to establish the exact cut-off value of PDV for routine clinical application.
Constraining the loop quantum gravity parameter space from phenomenology
Brahma, Suddhasattwa; Ronco, Michele
2018-03-01
Development of quantum gravity theories rarely takes inputs from experimental physics. In this letter, we take a small step towards correcting this by establishing a paradigm for incorporating putative quantum corrections, arising from canonical quantum gravity (QG) theories, in deriving falsifiable modified dispersion relations (MDRs) for particles on a deformed Minkowski space-time. This allows us to differentiate and, hopefully, pick between several quantization choices via testable, state-of-the-art phenomenological predictions. Although a few explicit examples from loop quantum gravity (LQG) (such as the regularization scheme used or the representation of the gauge group) are shown here to establish the claim, our framework is more general and is capable of addressing other quantization ambiguities within LQG and also those arising from other similar QG approaches.
Non-self-dual nonlinear gravitons
International Nuclear Information System (INIS)
Yasskin, P.B.; Isenberg, J.A.
1982-01-01
Penrose has given a twistor description of all self-dual complex Riemannian space-times. This construction is modified to characterize all complex Riemannian space-times and all complex teleparallel space-times. This construction may be useful in finding non-self-dual solutions to the gravitational field equations (Einstein's or otherwise) without or with sources. It may also lead to a nonperturbative method for computing path integrals. Whereas Penrose shows that a self-dual space-time may be specified by a deformation of projective twistor space (the set of α planes in complex Minkowski space), it is found that a Riemannian or teleparallel space-time may be described by a deformation of projective ambitwistor space (the set of null geodesics in complex Minkowski space). (author)
Real-World Effectiveness of Clozapine for Borderline Personality Disorder
DEFF Research Database (Denmark)
Rohde, Christopher; Polcwiartek, Christoffer; Correll, Christoph U
2017-01-01
While some second-generation antipsychotics have shown efficacy on patients with borderline personality disorder (BPD), limited data exist regarding the effect of clozapine. Thus, we aimed to investigate the effects of clozapine on naturalistic outcomes in BPD patients with a 2-year mirror-image ....... The number of patients with intentional self-harm or overdose decreased significantly from 189 to 114 individuals (p
Zanarini, Mary C; Temes, Christina M; Ivey, Alexandra M; Cohn, Danielle M; Conkey, Lindsey C; Frankenburg, Frances R; Fitzmaurice, Garrett M
2017-06-01
This study had two aims. The first was to assess and compare various types of aggressive behavior toward others reported by borderline patients and axis II comparison subjects over time. The second was to determine the best baseline and time-varying predictors of aggressive behavior in these borderline patients. At baseline, a series of interviews and self-report measures were administered to 290 borderline patients and 72 axis II comparison subjects. Measures assessing aggression toward others, axis I and II disorders as well as adult adversity were re-administered every two years over the course of ten years. It was found that borderline patients reported significantly higher rates of verbal, emotional, and physical aggression toward others than comparison subjects but the rates of these forms of aggression toward others declined significantly for those in both study groups. Multivariate analyses indicated that the strongest predictors of adult aggression towards others were severity of adult adversity and a substance use disorder. Taken together, these results suggest that borderline patients commonly report aggression toward others but that this aggression declines significantly over time. These results also suggest that this aggression toward others is most strongly associated with adult experiences of adversity and concurrent substance abuse. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.
Romero-Martínez, Ángel; Lila, Marisol; Moya-Albiol, Luis
2016-01-01
Antisocial, borderline, and narcissistic personality traits have been described as characteristics of intimate partner violence (IPV) perpetrators. Furthermore, deficits in cognitive empathy and impairments in emotional decoding processes may at least partially explain conduct disorders and social dysfunction in general. However, previous research has not explored potential associations between empathy deficits and the aforementioned traits or whether they are reflected in recidivism in IPV perpetrators. Accordingly, the main aim of this study was to explore associations between empathy deficits, antisocial, borderline, and narcissistic traits and the risk of recidivism in this population. The sample consisted of 144 IPV perpetrators (mean age = 41 years). High antisocial and borderline personality traits in this sample were associated with a high risk of recidivism, these relationships being moderated by poor empathy skills. Moreover, in IPV perpetrators with both antisocial and borderline personality traits, the risk of recidivism was higher than in those with only one of these traits. In contrast, narcissistic traits were unrelated to the risk of recidivism and impairments in empathy. The results of our study highlight the importance of empathy deficits and may help professionals to develop specific intervention programs focusing on improving empathy skills in antisocial and borderline IPV perpetrators.
Cicchetti, Dante; Rogosch, Fred A.; Hecht, Kathryn F.; Crick, Nicki R; Hetzel, Susan
2014-01-01
In this investigation, gene-environment-gender interaction effects in predicting child borderline personality disorder symptomatology among maltreated and nonmaltreated low-income children (N = 1,051) were examined. In the context of a summer research camp, adult-peer-, and self-report assessments of borderline precursor indicators were obtained, as well as child self-report on the Borderline Personality Features Scale-Children. Genetic variants of the OXTR genotype and the FKPB5 CATT haplotype were investigated. Children who self-reported high levels of borderline personality symptomatology were differentiated by adults, peers, and additional self-report on indicators of emotional instability, conflictual relationships with peers and adults, preoccupied attachment, and indicators of self-harm and suicidal ideation. Maltreated children also were more likely to evince many of these difficulties relative to nonmaltreated children. In a series of ANCOVAs, controlling for age and ancestrally informative markers, indicated significant maltreatment X gene X gender three-way interactions. Consideration of the maltreatment parameters of subtype, onset, and recency expanded understanding of variation among maltreated children. The three-way interaction effects demonstrated differential patterns among girls and boys. Among girls, the gene-environment interaction was more consistent with a diathesis-stress model, whereas among boys a differential-sensitivity interaction effect was indicated. Moreover, the genetic variants associated with greater risk for higher borderline symptomatology, dependent on maltreatment experiences, were opposite in girls compared to boys. The findings have important implications for understanding variability in early predictors of borderline personality pathology. PMID:25047302
Directory of Open Access Journals (Sweden)
I. D. Spirina
2017-02-01
Full Text Available The objective of this study is to evaluate the mutual influence of pain syndrome and borderline psychiatric disorders depending on its intensity and tolerability in patients with coxarthrosis who need endoprosthetics. 76 patients with coxarthrosis aged from 25 to 68 who were hospitalized in the Department of Endoprosthetics at Mechnikov Regional Clinical Hospital in Dnipro City in the period from November 2015 to September 2016 were observed. For diagnosis of psychopathological disorders, and for evaluation of the effectiveness of therapeutic interventions, the following methods were used in our research: clinical and psychopathological (technique SCL-90-R, Tаylor anxiety scale, study of the type of attitude to the disease (LOBI, Dembo-Rubinstein self-esteem scale, Leonhard-Schmieschek questionnaire for assessment of accentuation of personality traits, the Luscher 8-colour test and the Toronto alexithymia scale (TAS. Severity of pain syndrome was assessed using a visual analogue scale of pain (VAS. Forms of borderline mental disorders were diagnosed in 51 patients with coxarthrosis, such as depressive disorder (F 32 – 19 (24.8%, neurasthenia (F 48 – 12 (16.2, anxiety and phobic disorders (F 40–41 – 14 (18.1%, and personality disorders (F 60.5, F 60.6, F 60.7 – 6 (7.6%. In 25 (33.3% patients clinically-defined forms of mental disorders were identified. Leading syndromes in these disorders were depression – 19 (24.8% patients, anxiety and phobic – 15 (20.0%, asthenic – 10 (12.4%, hypochondriacal – 7 (9.5% patients. According to the results of the correlation analysis, a close correlation between the severity of pain syndrome and borderline mental disorders (r = 0.779 was established for patients in the preoperative stage. The average level of pain syndrome on the VAS scale in patients with borderline mental disorders was twice as high as in patients without these disorders (63.4 vs. 32.4 points, but it does not depend on the
Development and Validation of the Minnesota Borderline Personality Disorder Scale
Bornovalova, Marina A.; Hicks, Brian M.; Patrick, Christopher J.; Iacono, William G.; McGue, Matt
2011-01-01
Although large epidemiological data sets can inform research on the etiology and development of borderline personality disorder (BPD), they rarely include BPD measures. In some cases, however, proxy measures can be constructed using instruments already in these data sets. In this study, the authors developed and validated a self-report measure of…
Maturation in patients with borderline personality disorder.
Levallius, Johanna; Rydén, Göran; Norring, Claes
2015-08-30
Patients with borderline personality disorder have a characteristic and extreme personality associated with psychopathology. The aim was to investigate personality change in relation to suicidality following treatment. 21 patients were assessed before and after psychotherapy on personality (NEO PI-R) and suicidality (SUAS). At follow-up, Neuroticism and Conscientiousness normalized along with six lower-order facets; Depression, Impulsiveness, Competence, Achievement Striving, Self-Discipline and Deliberation. Thirteen patients showed a positive personality development paralleled by a lesser degree of suicidality. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
A coset space compactification of the field theory limit of a heterotic string
International Nuclear Information System (INIS)
Foda, O.; Helayel-Neto, J.A.
1986-01-01
The D = 10 - E 8 xE 8 field theory limit of the heterotic string is compactified on the non-symmetric coset space Sp(4)/SU(2) xU(1) that is known in the limit of decoupled gravity to give three standard fermion generations, with SU(5)xSU(3)sub(F)xU(1)sub(F) as a gauge group in D = 4. Allowing for non-vanishing fermion bilinear condensates, and assuming the conventional form of the supersymmetry transformations, the presence of a family of N = 1 supersymmetric background field configurations is proved. This requires the non-compact space to be flat: (Minkowski) 4 , while the 3-form Hsub(MNP) is non-vanishing and proportional to the torsion on the internal manifold. All equations of motion, including that of the dilation, are satisfied. (author)
A coset-space compactification of the field-theory limit of a heterotic string
International Nuclear Information System (INIS)
Foda, O.; Helayel-Neto, J.A.
1985-06-01
The D=10-E 8 xE 8 field-theory limit of the heterotic string is compactified on the non-symmetric coset-space Sp(4)/SU(2)xU(1), that is known - in the limit of decoupled gravity - to give 3 standard fermion generations, with SU(5)xSU(3)sub(F)xU(1)sub(F) as a gauge group in D=4. Allowing for non-vanishing fermion-bilinear condensates, and assuming the conventional form of the supersymmetry transformations, we prove the presence of a family of N=1 supersymmetric background field configurations. This requires the non-compact space to be flat: (Minkowski) 4 , while the 3-form Hsub(MNP) is non-vanishing, and proportional to the torsion on the internal manifold. All equations of motion - including that of the dilaton - are satisfied. (author)
Penson, Brittany N; Ruchensky, Jared R; Morey, Leslie C; Edens, John F
2016-11-01
A substantial amount of research has examined the developmental trajectory of antisocial behavior and, in particular, the relationship between antisocial behavior and maladaptive personality traits. However, research typically has not controlled for previous behavior (e.g., past violence) when examining the utility of personality measures, such as self-report scales of antisocial and borderline traits, in predicting future behavior (e.g., subsequent violence). Examination of the potential interactive effects of measures of both antisocial and borderline traits also is relatively rare in longitudinal research predicting adverse outcomes. The current study utilizes a large sample of youthful offenders ( N = 1,354) from the Pathways to Desistance project to examine the separate effects of the Personality Assessment Inventory Antisocial Features (ANT) and Borderline Features (BOR) scales in predicting future offending behavior as well as trends in other negative outcomes (e.g., substance abuse, violence, employment difficulties) over a 1-year follow-up period. In addition, an ANT × BOR interaction term was created to explore the predictive effects of secondary psychopathy. ANT and BOR both explained unique variance in the prediction of various negative outcomes even after controlling for past indicators of those same behaviors during the preceding year.
Kleindienst, Nikolaus; Limberger, Matthias F; Ebner-Priemer, Ulrich W; Keibel-Mauchnik, Jana; Dyer, Anne; Berger, Mathias; Schmahl, Christian; Bohus, Martin
2011-08-01
A substantial proportion of Borderline Personality Disorder (BPD) patients respond by a marked decrease of psychopathology when treated with Dialectical Behavioral Therapy (DBT). To further enhance the rate of DBT-response, it is useful to identify characteristics related to unsatisfactory response. As DBT relies on emotional learning, we explored whether dissociation-which is known to interfere with learning- predicts poor response to DBT. Fifty-seven Borderline Personality Disorder (BPD) patients (DSM-IV) were prospectively observed during a three-month inpatient DBT program. Pre-post improvements in general psychopathology (SCL-90-R) were predicted from baseline scores of the Dissociative Experiences Scale (DES) by regression models accounting for baseline psychopathology. High DES-scores were related to poor pre-post improvement (β = -0.017 ± 0.006, p = 0.008). The data yielded no evidence that some facets of dissociation are more important in predicting DBT-response than others. The results suggest that dissociation in borderline-patients should be closely monitored and targeted during DBT. At this stage, research on treatment of dissociation (e.g., specific skills training) is warranted.
Simplified validation of borderline hits of database searches
Thomas, Henrik; Shevchenko, Andrej
2008-01-01
Along with unequivocal hits produced by matching multiple MS/MS spectra to database sequences, LC-MS/MS analysis often yields a large number of hits of borderline statistical confidence. To simplify their validation, we propose to use rapid de novo interpretation of all acquired MS/MS spectra and, with the help of a simple software tool, display the candidate sequences together with each database search hit. We demonstrate that comparing hit database sequences and independent de novo interpre...
Cristea, Ioana A; Gentili, Claudio; Cotet, Carmen D; Palomba, Daniela; Barbui, Corrado; Cuijpers, Pim
2017-04-01
Borderline personality disorder (BPD) is a debilitating condition, but several psychotherapies are considered effective. To conduct an updated systematic review and meta-analysis of randomized clinical trials to assess the efficacy of psychotherapies for BPD populations. Search terms were combined for borderline personality and randomized trials in PubMed, PsycINFO, EMBASE, and the Cochrane Central Register of Controlled Trials (from database inception to November 2015), as well as the reference lists of earlier meta-analyses. Included were randomized clinical trials of adults with diagnosed BPD randomized to psychotherapy exclusively or to a control intervention. Study selection differentiated stand-alone designs (in which an independent psychotherapy was compared with control interventions) from add-on designs (in which an experimental intervention added to usual treatment was compared with usual treatment alone). Data extraction coded characteristics of trials, participants, and interventions and assessed risk of bias using 4 domains of the Cochrane Collaboration Risk of Bias tool (independent extraction by 2 assessors). Outcomes were pooled using a random-effects model. Subgroup and meta-regression analyses were conducted. Standardized mean differences (Hedges g) were calculated using all outcomes reported in the trials for borderline symptoms, self-harm, suicide, health service use, and general psychopathology at posttest and follow-up. Differential treatment retention at posttest was analyzed, reporting odds ratios. Thirty-three trials (2256 participants) were included. For borderline-relevant outcomes combined (symptoms, self-harm, and suicide) at posttest, the investigated psychotherapies were moderately more effective than control interventions in stand-alone designs (g = 0.32; 95% CI, 0.14-0.51) and add-on designs (g = 0.40; 95% CI, 0.15-0.65). Results were similar for other outcomes, including stand-alone designs: self-harm (g = 0.32; 95% CI
Joyce, Peter R; Light, Katrina J; Rowe, Sarah L; Cloninger, C Robert; Kennedy, Martin A
2010-03-01
Self-mutilation has traditionally been associated with borderline personality disorder, and seldom examined separately from suicide attempts. Clinical experience suggests that self-mutilation is common in bipolar disorder. A family study was conducted on the molecular genetics of depression and personality, in which the proband had been treated for depression. All probands and parents or siblings were interviewed with a structured interview and completed the Temperament and Character Inventory. Fourteen per cent of subjects interviewed reported a history of self-mutilation, mostly by wrist cutting. Self-mutilation was more common in bipolar I disorder subjects then in any other diagnostic groups. In multiple logistic regression self-mutilation was predicted by mood disorder diagnosis and harm avoidance, but not by borderline personality disorder. Furthermore, the relatives of non-bipolar depressed probands with self-mutilation had higher rates of bipolar I or II disorder and higher rates of self-mutilation. Sixteen per cent of subjects reported suicide attempts and these were most common in those with bipolar I disorder and in those with borderline personality disorder. On multiple logistic regression, however, only mood disorder diagnosis and harm avoidance predicted suicide attempts. Suicide attempts, unlike self-mutilation, were not familial. Self-mutilation and suicide attempts are only partially overlapping behaviours, although both are predicted by mood disorder diagnosis and harm avoidance. Self-mutilation has a particularly strong association with bipolar disorder. Clinicians need to think of bipolar disorder, not borderline personality disorder, when assessing an individual who has a history of self-mutilation.
Brief Treatment for Borderline and Narcissistic Couples: Working the Reenactment Spiral.
Clark, Steven
1997-01-01
Develops a brief, psychoanalytically informed treatment model for borderline and narcissistic couples. Advantages and disadvantages as well as treatment principles of brief treatment for this population are explored. Phases of treatment are reviewed with an emphasis on process and interventions. Explores managing the spiraling escalation of affect…
Huprich, Steven K; Zimmerman, Mark; Chelminski, Iwona
2006-01-01
Several studies have found that 3 personality disorders (PDs) tend to share moderate rates of comorbidity with depressive PD: avoidant, borderline, and obsessive-compulsive. This study sought to evaluate the diagnostic criteria of each disorder in an effort to understand where areas of overlap may occur and to modify criteria sets where reasonable to reduce any degree of overlap. One thousand two hundred psychiatric outpatients were interviewed with the Structured Interview for DSM-IV Personality Disorders. The highest degree of comorbidity was observed between avoidant PD and depressive PD. Logistic regression analyses indicated that 2 criteria-avoidant criterion 5 and depressive criterion 2-could be removed from the diagnostic criteria sets and reduce the rates of overlap by as much as 15%. A factor analysis of the criteria of all 4 PDs indicated that there is a common clustering of many of the symptoms of avoidant, borderline, depressive, and obsessive-compulsive PDs and that borderline symptoms tend to cluster together most consistently. Avoidant and obsessive-compulsive personality symptoms clustered in ways that may reflect a problem of how to engage with others, suggestive of an approach-avoidance conflict. Depressive PD symptoms clustered in a way suggestive of problems with anger that is directed toward oneself and others. The factor analysis results suggest that an organization of symptoms around themes of conflict may provide useful ways of understanding the personality patterns of these 4 disorders.
The Minkowski sum of a zonotope and the Voronoi polytope of the root lattice E7
International Nuclear Information System (INIS)
Grishukhin, Vyacheslav P
2012-01-01
We show that the Minkowski sum P V (E 7 )+Z(U) of the Voronoi polytope P V (E 7 ) of the root lattice E 7 and the zonotope Z(U) is a 7-dimensional parallelohedron if and only if the set U consists of minimal vectors of the dual lattice E 7 * up to scalar multiplication, and U does not contain forbidden sets. The minimal vectors of E 7 are the vectors r of the classical root system E 7 . If the r 2 -norm of the roots is set equal to 2, then the scalar products of minimal vectors from the dual lattice only take the values ±1/2. A set of minimal vectors is referred to as forbidden if it consists of six vectors, and the directions of some of these vectors can be changed so as to obtain a set of six vectors with all the pairwise scalar products equal to 1/2. Bibliography: 11 titles.
de la Rosa, Iris; Oquendo, María A; García, Gemma; Stanley, Barbara; González-Pinto, Ana; Liu, Shang-Min; Blanco, Carlos
To examine whether bipolar disorder and borderline personality disorder represent 2 different disorders or alternative manifestations of the same disorder. The data were collected between January 1, 2004, and December 31, 2005. The analyses were conducted between December 21 and December 27, 2010. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were performed on 25 symptoms assessing depression, mania, and borderline personality disorder from the National Epidemiologic Survey on Alcohol and Related Conditions, a large nationally representative sample of the US adult population (N = 34,653). DSM-IV criteria were used for diagnosis of bipolar disorder and borderline personality disorder. A 3-factor solution provided an excellent fit in both the EFA (root mean square error of approximation [RMSEA] = 0.017, comparative fix index [CFI] = 0.997) and the CFA (RMSEA = 0.024, CFI = 0.993). Factor 1 (Borderline Personality Disorder) loaded on all 9 borderline personality disorder symptoms, factor 2 (Depression) loaded on 8 symptoms of depression, and factor 3 (Mania) loaded on 7 symptoms of mania plus the psychomotor agitation item of the depression section. The correlations between the Borderline Personality Disorder and Depression factors (r = 0.328) and between the Borderline Personality Disorder and Mania factors (r = 0.394) were lower than the correlation between Depression and Mania factors (r = 0.538). A model with 3 positively correlated factors provided an excellent fit for the latent structure of borderline personality disorder and bipolar disorder symptoms. The pattern of pairwise correlations between the 3 factors is consistent with the clinical presentation of 2 syndromes (depression and mania) that can be characterized as a unitary psychiatric entity (bipolar disorder) and a third syndrome (borderline personality disorder) that is often comorbid with bipolar disorder. The findings converge in suggesting that bipolar disorder and
Brand, Bethany L; Lanius, Ruth A
2014-01-01
Emotion dysregulation is a core feature of chronic complex dissociative disorders (DD), as it is for borderline personality disorder (BPD). Chronic complex DD include dissociative identity disorder (DID) and the most common form of dissociative disorder not otherwise specified (DDNOS, type 1), now known as Other Specified Dissociative Disorders (OSDD, type 1). BPD is a common comorbid disorder with DD, although preliminary research indicates the disorders have some distinguishing features as well as considerable overlap. This article focuses on the epidemiology, clinical presentation, psychological profile, treatment, and neurobiology of chronic complex DD with emphasis placed on the role of emotion dysregulation in each of these areas. Trauma experts conceptualize borderline symptoms as often being trauma based, as are chronic complex DD. We review the preliminary research that compares DD to BPD in the hopes that this will stimulate additional comparative research.
Twistors and four-dimensional conformal field theory
International Nuclear Information System (INIS)
Singer, M.A.
1990-01-01
This is a report (with technical details omitted) on work concerned with generalizations to four dimensions of two-dimensional Conformed Field Theory. Accounts of this and related material are contained elsewhere. The Hilbert space of the four-dimensional theory has a natural interpretation in terms of massless spinor fields on real Minkowski space. From the twistor point of view this follows from the boundary CR-manifold P being precisely the space of light rays in real compactified Minkowski space. All the amplitudes can therefore be regarded as defined on Hilbert spaces built from Lorentzian spinor fields. Thus the twistor picture provides a kind of halfway house between the Lorentzian and Euclidean field theories. (author)
Ghiasi, Hamed; Mohammadi, Abolalfazl; Zarrinfar, Pouria
2016-10-01
Objective: Borderline personality disorder is one of the most complex and prevalent personality disorders. Many variables have so far been studied in relation to this disorder. This study aimed to investigate the role of emotion regulation, attachment styles, and theory of mind in predicting the traits of borderline personality disorder. Method: In this study, 85 patients with borderline personality disorder were selected using convenience sampling method. To measure the desired variables, the questionnaires of Gross emotion regulation, Collins and Read attachment styles, and Baron Cohen's Reading Mind from Eyes Test were applied. The data were analyzed using multivariate stepwise regression technique. Results: Emotion regulation, attachment styles, and theory of mind predicted 41.2% of the variance criterion altogether; among which, the shares of emotion regulation, attachment styles and theory of mind to the distribution of the traits of borderline personality disorder were 27.5%, 9.8%, and 3.9%, respectively. Conclusion : The results of the study revealed that emotion regulation, attachment styles, and theory of mind are important variables in predicting the traits of borderline personality disorder and that these variables can be well applied for both the treatment and identification of this disorder.
Directory of Open Access Journals (Sweden)
Hamed Ghiasi
2016-12-01
Full Text Available Objective: Borderline personality disorder is one of the most complex and prevalent personality disorders. Many variables have so far been studied in relation to this disorder. This study aimed to investigate the role of emotion regulation, attachment styles, and theory of mind in predicting the traits of borderline personality disorder.Method: In this study, 85 patients with borderline personality disorder were selected using convenience sampling method. To measure the desired variables, the questionnaires of Gross emotion regulation, Collins and Read attachment styles, and Baron Cohen's Reading Mind from Eyes Test were applied. The data were analyzed using multivariate stepwise regression technique.Results: Emotion regulation, attachment styles, and theory of mind predicted 41.2% of the variance criterion altogether; among which, the shares of emotion regulation, attachment styles and theory of mind to the distribution of the traits of borderline personality disorder were 27.5%, 9.8%, and 3.9%, respectively.Conclusion: The results of the study revealed that emotion regulation, attachment styles, and theory of mind are important variables in predicting the traits of borderline personality disorder and that these variables can be well applied for both the treatment and identification of this disorder.
Anja eVaskinn; Anja eVaskinn; Bjørnar T. eAntonsen; Bjørnar T. eAntonsen; Ragnhild A. eFretland; Isabel eDziobek; Kjetil eSundet; Kjetil eSundet; Theresa eWilberg
2015-01-01
Although borderline personality disorder and schizophrenia are notably different mental disorders, they share problems in social cognition – or understanding the feelings, intentions and thoughts of other people. To date no studies have directly compared the social cognitive abilities of individuals with these two disorders. In this study, the social cognitive subdomain theory of mind was investigated in females with borderline personality disorder (n = 25), females with schizophrenia (n = 25...
Borderline personality disorder and unmet needs.
Grambal, Ales; Prasko, Jan; Ociskova, Marie; Slepecky, Milos; Kotianova, Antonia; Sedlackova, Zuzana; Zatkova, Marta; Kasalova, Petra; Kamaradova, Dana
2017-08-01
Borderline personality disorder (BPD) is a disabling psychiatric condition with a chronic and challenging course. BPD is reflected as a disorder of self-regulation" and is associated with both psychological vulnerabilities and social relations that fail to support basic emotional needs. The objective of the paper is to provide the up-to-date data on the unmet needs of BPD patients and their families. A computerized search of the literature printed between January 1990 and May 2017 was conducted in PubMed, and additional papers were extracted using keywords "borderline personality disorder,"needs," "pharmacotherapy," "psychotherapy," "CBT," and "family" in various combinations. According to the eligibility criteria, 57 articles were chosen. Secondary articles from the reference lists of primarily identified papers have been selected for the eligibility and added to the first list (N=151). The results were divided into three categories: the needs connected with (1) the symptom control; (2) the treatment; (3) the quality of life. The needs connected with symptoms were described issues such as emotional needs, social interactions, self-harm, parasuicide, suicidality, comorbidity, mentalization, identity disturbance, moreover, barriers to treatment. The needs connected with the treatment described are focused on needs for early diagnosis, early intervention, holding environment, therapeutic relation, assertive community treatment, destigmatization, hospitalization, and primary care. The needs connected with the quality of life involve family needs, physical health, spiritual needs, advocacy needs, and needs for the separation-individuation. The part focused on implications for the treatment presented several treatment approaches, focusing mostly on the their basics and efficacy. Observing the patients' needs may be essential to the treatment of the individuals suffering from BPD. However, many needs remain unmet in the areas linked to medical, personal, and social
Einstein’s physical chronogeometry
Directory of Open Access Journals (Sweden)
Mario Bacelar Valente
Full Text Available ABSTRACT In Einstein’s physical geometry, the geometry of space and the uniformity of time are taken to be non-conventional. However, due to the stipulation of the isotropy of the one-way speed of light in the synchronization of clocks (or definition of simultaneity, as it stands, Einstein’s views do not seem to apply to the whole of the Minkowski space-time. In this work we will see how Einstein’s views can be applied to the Minkowski space-time. In this way, when adopting Einstein’s views, chronogeometry is a physical chronogeometry.
Ben-Porath, Denise D; Wisniewski, Lucene; Warren, Mark
2009-01-01
Studies have reported conflicting findings regarding the impact on treatment for eating disorder patients comorbidly diagnosed with borderline personality disorder. The current investigation sought to investigate whether individuals diagnosed with an eating disorder vs. those comorbidly diagnosed with an eating disorder and borderline personality disorder differ on measures of eating disorders symptoms and/or general distress over the course of treatment. In light of the success of DBT in treating individuals diagnosed with borderline personality disorder, a group known to have considerable difficulties in regulating affect, the current study also sought to examine whether these two groups would differ on expectancies to regulate affect over the course of DBT-informed treatment. Results indicated that while a comorbid diagnosis of borderline personality disorder did not impact eating disorder treatment outcomes, those comorbidly diagnosed did present overall with higher levels of general distress and psychological disturbance. With respect to affect regulation, results indicated that at the beginning of treatment, eating disordered individuals who carried a comorbid diagnosis of BPD were significantly less able to regulate affect than patients without a comorbid borderline diagnosis. However, at the end of treatment there was no statistically significant difference between the two groups. The role of affect regulation in treating eating disordered individuals with a comorbid borderline personality disorder diagnosis is discussed.
Generalized Wigner functions in curved spaces: A new approach
International Nuclear Information System (INIS)
Kandrup, H.E.
1988-01-01
It is well known that, given a quantum field in Minkowski space, one can define Wigner functions f/sub W//sup N/(x 1 ,p 1 ,...,x/sub N/,p/sub N/) which (a) are convenient to analyze since, unlike the field itself, they are c-number quantities and (b) can be interpreted in a limited sense as ''quantum distribution functions.'' Recently, Winter and Calzetta, Habib and Hu have shown one way in which these flat-space Wigner functions can be generalized to a curved-space setting, deriving thereby approximate kinetic equations which make sense ''quasilocally'' for ''short-wavelength modes.'' This paper suggests a completely orthogonal approach for defining curved-space Wigner functions which generalizes instead an object such as the Fourier-transformed f/sub W/ 1 (k,p), which is effectively a two-point function viewed in terms of the ''natural'' creation and annihilation operators a/sup dagger/(p-(12k) and a(p+(12k). The approach suggested here lacks the precise phase-space interpretation implicit in the approach of Winter or Calzetta, Habib, and Hu, but it is useful in that (a) it is geared to handle any ''natural'' mode decomposition, so that (b) it can facilitate exact calculations at least in certain limits, such as for a source-free linear field in a static spacetime
Working memory development in children with mild to borderline intellectual disabilities
Van der Molen, M. J.; Henry, L. A.; Van Luit, J. E H
2014-01-01
Background: The purpose of the current cross-sectional study was to examine the developmental progression in working memory (WM) between the ages of 9 and 16 years in a large sample of children with mild to borderline intellectual disabilities (MBID). Baddeley's influential WM model was used as a
Linguistic Factors Associated with Self-Inflicted Injury in Borderline Personality Disorder
Birdwell, Benjamin Park
2009-01-01
The present study builds on previous research, which demonstrated higher levels of depressive and interpersonal conflict language in first-person narrative accounts of nonsuicidal self-injury (NSSI) and suicide attempt (SA) in borderline personality disorder. The present study was designed to examine the semantic similarity of time-sequences…
The relationship between borderline personality disorder and bipolar disorder
Zimmerman, Mark; Morgan, Theresa A.
2013-01-01
It is clinically important to recognize both bipolar disorder and borderline personality disorder (BPD) in patients seeking treatment for depression, and it is important to distinguish between the two. Research considering whether BPD should be considered part of a bipolar spectrum reaches differing conclusions. We reviewed the most studied question on the relationship between BPD and bipolar disorder: their diagnostic concordance. Across studies, approximately 10% of patients with BPD had bi...
Implicit Self-Esteem in Borderline Personality and Depersonalization Disorder
Hedrick, Alexis N.; Berlin, Heather A.
2012-01-01
Self-identity is disrupted in people with borderline personality disorder (BPD) and depersonalization disorder (DPD), fluctuating with sudden shifts in affect in BPD and experienced as detached in DPD. Measures of implicit self-esteem, free from conscious control and presentation biases, may highlight how such disruptions of self-concept differentially affect these two populations on an unconscious level. We examined implicit self-esteem using the Implicit Association Test, along with measure...
Borderline features are associated with inaccurate trait self-estimations
Morey, Leslie C
2014-01-01
Background Many treatments for Borderline Personality Disorder (BPD) are based upon the hypothesis that gross distortion in perceptions and attributions related to self and others represent a core mechanism for the enduring difficulties displayed by such patients. However, available experimental evidence of such distortions provides equivocal results, with some studies suggesting that BPD is related to inaccuracy in such perceptions and others indicative of enhanced accuracy in some judgments...
Causality and symmetry in cosmology and the conformal group
International Nuclear Information System (INIS)
Segal, I.E.
1977-01-01
A new theoretic postulate in fundamental physics is considered which is called the chronometric principle because it deals primarily with the nature of time, or its dual or conjugate, energy. Conformality is equivalent to causality. Thus, the group of all local causality-preserving transformations in the vicinity of a point of Minkowski space is, as a local Lie group, identical with the conformal group. The same statement made globally on Minkowski space is: The set of all vector fields on Minkowski space which generate smooth local causality-preserving transformations is identical with the set of all conformal vector fields. The main validation for the chronometric principle is in cosmology or ultramacroscopic physics. Therefore this principle is illustrated along the lines of the red shift. This principle in combination with quantum field theory leads to a convergent and causal description of particle production in which nonlinearities are supplanted by more sophisticated and comprehensive actions for the fundamental symmetry groups. 11 references
International Nuclear Information System (INIS)
Migliaccio, M.; Natoli, P.; De Troia, G.; Hikage, C.; Komatsu, E.; Ade, P.A.R.; Bock, J.J.; Bond, J.R.; Borrill, J.; Boscaleri, A.; Contaldi, C.R.; Crill, B.P.; Bernardis, P. de; Gasperis, G. de; Oliveira-Costa, A. de; Di Stefano, G.; Hivon, E.; Kisner, T.S.; Jones, W.C.; Lange, A.E.
2009-01-01
Minkowski functionals are a powerful tool to constrain the Gaussianity of the Cosmic Microwave Background (CMB). In the limit of a weakly non Gaussian field, a perturbative approach can be derived [Hikage C., Komatsu E., and Matsubara T., 2006, ApJ, 653, 11] that is completely based on analytical formulae without requiring computationally intensive, dedicated Monte Carlo non Gaussian simulations of the CMB anisotropy. We apply this machinery to an intensity map derived from the 1998 and 2003 flights of BOOMERanG, analyzed here together for the first time. We set limits on the non-linear coupling parameter f NL as -1020 NL <390 at 95% CL, markedly improving the previous constraints set by [De Troia G. et al., 2007, ApJ, 670, L73] whose analysis was limited to the BOOMERanG 2003 dataset. These limits are the most stringent ever set among suborbital experiments.
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Migliaccio, M.; Natoli, P.; De Troia, G. [Dipartimento di Fisica, Universita di Roma ' Tor Vergata' , Via della Ricerca Scientifica, 1 I-00133 Roma (Italy); Hikage, C. [School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA (United Kingdom); Komatsu, E. [Texas Cosmology Center, University of Texas at Austin, 1 University Station, C1400, Austin, TX 78712 (United States); Ade, P.A.R. [School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA (United Kingdom); Bock, J.J. [Jet Propulsion Laboratory, Pasadena, CA (United States); Bond, J.R. [Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario (Canada); Borrill, J. [Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Boscaleri, A. [IFAC-CNR, Firenze (Italy); Contaldi, C.R. [Theoretical Physics Group, Imperial College, London (United Kingdom); Crill, B.P. [Jet Propulsion Laboratory, Pasadena, CA (United States); Bernardis, P. de [Dipartimento di Fisica, Universita La Sapienza, Roma (Italy); Gasperis, G. de [Dipartimento di Fisica, Universita di Roma ' Tor Vergata' , Via della Ricerca Scientifica, 1 I-00133 Roma (Italy); Oliveira-Costa, A. de [Department of Physics, MIT, Cambridge, MA 02139 (United States); Di Stefano, G. [Istituto Nazionale di Geofisica e Vulcanologia, 00143 Rome (Italy); Hivon, E. [Institut d' Astrophysique, Paris (France); Kisner, T.S. [Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Jones, W.C. [Department of Physics, Princeton University, Princeton, NJ 0854 (United States); Lange, A.E. [Observational Cosmology, California Institute of Technology, Pasadena, CA (United States)
2009-10-15
Minkowski functionals are a powerful tool to constrain the Gaussianity of the Cosmic Microwave Background (CMB). In the limit of a weakly non Gaussian field, a perturbative approach can be derived [Hikage C., Komatsu E., and Matsubara T., 2006, ApJ, 653, 11] that is completely based on analytical formulae without requiring computationally intensive, dedicated Monte Carlo non Gaussian simulations of the CMB anisotropy. We apply this machinery to an intensity map derived from the 1998 and 2003 flights of BOOMERanG, analyzed here together for the first time. We set limits on the non-linear coupling parameter f{sub NL} as -1020
Um caso de transtorno de personalidade borderline atendido em psicoterapia dinâmica breve
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Cunha Paulo Jannuzzi
2001-01-01
Full Text Available Trata-se de um caso de Transtorno de Personalidade Borderline, encaminhado para a área de Psicoterapia Dinâmica Breve (PDB do Centro de Psicologia Aplicada da UNESP - Bauru/SP. O foco delimitado consistiu em trabalhar as características depressivas do paciente, buscando ajudá-lo a elaborar o luto pela perda de sua mãe. A análise deste caso veio corroborar a hipótese de que pacientes com transtorno de personalidade borderline também podem ser beneficiados com a PDB. A peculiaridade desta modalidade de atendimento está relacionada ao estabelecimento de objetivos terapêuticos (foco condizentes com as reais possibilidades e limites de cada paciente.
International Nuclear Information System (INIS)
Ohkuma, Hiroki; Tanaka, Masahiko; Suzuki, Shigeharu; Kondoh, Izumi
2000-01-01
Chronic hydrocephalus after aneurysmal subarachnoid haemorrhage (SAH) is easily diagnosed in most cases. However, the diagnosis is sometimes difficult in borderline cases, in which (a) pathognomonic clinical deterioration due to hydrocephalus is masked by the neurological deficits caused in the acute stage of SAH and (b) ventricular enlargement is not so marked on CT scan. The purpose of this study was to investigate whether or not iodine-123 labelled N-isopropyl-p-iodoamphetamine ( 123 I-IMP) single-photon emission tomography (SPET) is of value for the early diagnosis of borderline chronic hydrocephalus after SAH. Fifteen patients who met the criteria of borderline chronic hydrocephalus were selected for the study, and underwent a shunt operation. The patients were divided into a shunt-effective group and a shunt-ineffective group according to neurological improvement after the shunt operation. 123 I-IMP SPET was performed in the acute stage of SAH, within 1 week before the shunt operation, and 2 weeks after the shunt operation. Regional cerebral blood flow was estimated by the 123 I-IMP autoradiographic method. Pre-shunting periventricular low-perfusion areas showed statistically significant differences between the two groups (P 123 I-IMP SPET can be used for both the early diagnosis of borderline chronic hydrocephalus after SAH and the prediction of shunt effectiveness. (orig.)
Elmquist, JoAnna; Shorey, Ryan C; Anderson, Scott; Stuart, Gregory L
2016-10-01
Extant literature has documented a significant relationship between borderline symptoms and substance use disorders. As supported in past work, there is a significant theoretical relationship between borderline symptoms and compulsive sexual behaviors because both disorders share common underlying behaviors and traits. There is no known research that has examined the empirical relationship between borderline symptoms and compulsive sexual behaviors in a population with substance use disorders. To fill this important gap in the literature, this relationship was examined in the current study. Medical records from 120 women admitted to a private, residential treatment program for substance use disorders were reviewed for the current study. Hierarchical multiple regression analysis demonstrated that borderline symptoms were significantly associated with compulsive sexual behaviors after controlling for alcohol use and problems, drug use and problems, age, and positive impression management. Results from this study provide potentially important research and clinical implications, which could ultimately aid treatment and reduce relapse. However, continued research is needed to further examine the relationship between symptoms and compulsive sexual behaviors. © 2016 Wiley Periodicals, Inc.
Bernard, Larry C
2013-08-01
Two studies investigate relationships between individual differences in motivation and borderline personality disorder, psychopathy, and maladjustment. Participants completed the Brief Assessment of Individual Motives 1--Revised, a measure of 15 putative evolved motives (i.e., "traits of action"). In Study 1, N = 147 adult participants also completed the Borderline Personality Questionnaire and Self-Report Psychopathy III Questionnaire (SRP III). In Study 2, N = 135 college age participants also completed the SRP III and the Counseling Center Assessment of Psychological Symptoms-62. Regression analyses suggested that individual differences in motivational traits account for moderate amounts of variance in measures of antisocial personality disorder, psychopathy, and maladjustment. They also suggested that lower motivation to engage in cooperative behaviors (e.g., sharing resources and forming coalitions) is related to impaired interpersonal relationships and maladjustment.
Attentional Bias for Emotional Stimuli in Borderline Personality Disorder : A Meta-Analysis
Kaiser, D.; Jacob, G.A.; Domes, G.; Arntz, A.
2016-01-01
Background: In borderline personality disorder (BPD), attentional bias (AB) to emotional stimuli may be a core component in disorder pathogenesis and maintenance. Sampling: 11 emotional Stroop task (EST) studies with 244 BPD patients, 255 nonpatients (NPs) and 95 clinical controls and 4 visual
Hughes, Amy E.; Crowell, Sheila E.; Uyeji, Lauren; Coan, James A.
2012-01-01
Theoretical and empirical research has linked poor emotion regulation abilities with dysfunctional frontolimbic circuitry. Consistent with this, research on borderline personality disorder (BPD) finds that frontolimbic dysfunction is a predominant neural substrate underlying the disorder. Emotion regulation is profoundly compromised in BPD.…
Vuijk, P. J.; Hartman, E.; Scherder, E.; Visscher, C.
2010-01-01
Background There is a relatively small body of research on the motor performance of children with mild intellectual disabilities (MID) and borderline intellectual functioning (BIF). Adequate levels of motor skills may contribute to lifelong enjoyment of physical activity, participation in sports and
Brandt, L M
1983-01-01
This chapter is an attempt to offer a model for therapeutic work with borderline patients that is based on the structure and content of the fairy tale. It views the fairy tale as both descriptive in its echoing of developmental struggles of childhood and integrative in providing a model for resolution of these conflicts. Clare's use of the fairy tale offers confirmation of theoretical notions which place the etiology of borderline pathology in early developmental failures and a clue to the therapeutic work with borderline patients. While the childhood route of the fairy tale may no longer be available to most, its subtle mirroring of the separation-individuation crisis and gradual, growthful steps toward integration of both the external and the internal worlds offer an exquisite model for the work of psychotherapy. "Once a king in Narnia , always a king in Narnia . But don't go trying to use the same route twice. . ." (Lewis 1950, p. 186).
Antisocial Traits as Modifiers of Treatment Response in Borderline Inpatients
CLARKIN, JOHN F.; HULL, JAMES; YEOMANS, FRANK; KAKUMA, TATSUYUKI; CANTOR, JENNIFER
1994-01-01
The relationship of antisocial traits to treatment response in 35 female inpatients with borderline personality disorder was studied. Antisocial traits were measured with the Personality Assessment Inventory. Treatment response was measured by weekly ratings on the Symptom Checklist-90—Revised over 25 weeks of hospitalization. Treatment course was found to be significantly associated with the level of antisocial behavior reported at admission.
Costantini, Giulio; De Panfilis, Chiara
2017-01-01
We argue that the series of traits characterizing Borderline Personality Disorder samples do not weigh equally. In this regard, we believe that network approaches employed recently in Personality and Psychopathology research to provide information about the differential relationships among symptoms would be useful to test our claim. To our knowledge, this approach has never been applied to personality disorders. We applied network analysis to the nine Borderline Personality Disorder traits to explore their relationships in two samples drawn from university students and clinical populations (N = 1317 and N = 96, respectively). We used the Fused Graphical Lasso, a technique that allows estimating networks from different populations separately while considering their similarities and differences. Moreover, we examined centrality indices to determine the relative importance of each symptom in each network. The general structure of the two networks was very similar in the two samples, although some differences were detected. Results indicate the centrality of mainly affective instability, identity, and effort to avoid abandonment aspects in Borderline Personality Disorder. Results are consistent with the new DSM Alternative Model for Personality Disorders. We discuss them in terms of implications for therapy. PMID:29040324
Van der Molen, M J; Van Luit, J E H; Van der Molen, M W; Klugkist, I; Jongmans, M J
2010-05-01
The goal of this study is to evaluate the effectiveness of a computerised working memory (WM) training on memory, response inhibition, fluid intelligence, scholastic abilities and the recall of stories in adolescents with mild to borderline intellectual disabilities attending special education. A total of 95 adolescents with mild to borderline intellectual disabilities were randomly assigned to either a training adaptive to each child's progress in WM, a non-adaptive WM training, or to a control group. Verbal short-term memory (STM) improved significantly from pre- to post-testing in the group who received the adaptive training compared with the control group. The beneficial effect on verbal STM was maintained at follow-up and other effects became clear at that time as well. Both the adaptive and non-adaptive WM training led to higher scores at follow-up than at post-intervention on visual STM, arithmetic and story recall compared with the control condition. In addition, the non-adaptive training group showed a significant increase in visuo-spatial WM capacity. The current study provides the first demonstration that WM can be effectively trained in adolescents with mild to borderline intellectual disabilities.
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Marcos Hirata Soares
2010-01-01
Full Text Available OBJETIVO: Este estudo objetivou revisar, na literatura, os critérios diagnósticos e as intervenções nos transtornos de personalidade do tipo Antissocial e Borderline. MÉTODOS: Uma pesquisa manual foi realizada no acervo bibliográfico particular do autor, selecionando-se 12 referências; outra pesquisa sistematizada foi desenvolvida no período de 1990 a 2008, no mês de janeiro de 2009, na Biblioteca Virtual em Saúde, selecionando-se 23 artigos. RESULTADOS: Os achados indicaram duas abordagens - uma que classifica como doença, mas que necessita de revisão dos critérios diagnósticos e avaliação e a segunda, que classifica como problemas morais. CONCLUSÃO: Independente da abordagem é necessário que o enfermeiro aprimore seu conhecimento e compreenda a dificuldade desse sujeito ao relacionar-se adequadamente com outras pessoas; assim, é de fundamental importância que os membros da equipe de saúde analisem seus sentimentos, atitudes e reações em relação ao comportamento do cliente, uma vez que a relação com esta clientela é considerada uma das mais complexas em saúde mental.OBJETIVO: Este estudio tuvo por objetivo revisar, en la literatura, los criterios diagnósticos y las intervenciones en los trastornos de personalidad del tipo Anti-social y Borderline. MÉTODOS: Se trata de una investigación manual que fue realizada en el acervo bibliográfico particular del autor, seleccionando 12 referencias; otra investigación sistematizada fue desarrollada en el período de 1990 a 2008, en el mes de enero de 2009, en la Biblioteca Virtual en Salud, seleccionándose 23 artículos. RESULTADOS: Los hallazgos indicaron dos abordajes - uno que los clasifica como enfermedad, pero que necesita de revisión de los criterios diagnósticos y de evaluación, y la segunda, que los clasifica como problemas morales. CONCLUSIÓN: Independientemente del abordaje es necesario que el enfermero perfeccione su conocimiento y comprenda la dificultad
Borderline personality disorder in cultural context: commentary on Paris.
Miller, S G
1996-01-01
Paris suggests that some cultures provide protective factors that can suppress the emergence of borderline personality disorder (BPD). Yet all cultures contain some individuals who perceive themselves as unable to meet what is expected of them, and the resultant distress is expressed through a variety of "ethnic" disorders such as susto or nervios. When viewed in this context, BPD is similar to these disorders, notably in the perceived sense of social failure, marginality and powerlessness.
What Works in the Treatment of Borderline Personality Disorder
Choi-Kain, Lois W.; Finch, Ellen F.; Masland, Sara R.; Jenkins, James A.; Unruh, Brandon T.
2017-01-01
Purpose of the Review This review summarizes advances in treatments for adults with borderline personality disorder (BPD) in the last 5?years. Recent Findings Evidence-based advances in the treatment of BPD include a delineation of generalist models of care in contrast to specialist treatments, identification of essential effective elements of dialectical behavioral therapy (DBT), and the adaptation of DBT treatment to manage post-traumatic stress disorder (PTSD) and BPD. Studies on pharmacol...
A definition of distance and method of making space-time measurements
International Nuclear Information System (INIS)
Brisson, D.W.
1980-01-01
The paper explores an extended definition of the absolute value of a complex number and thus a new definition of distance. This new definition, called the nabsolute value of a complex number, is (Z) where Z = (a or ia) + (b or ib), so that (Z) is equivalent to [α 2 + β 2 ]sup(1/2), and α = a or ia, β = b or ib. This is shown on a superimposed X,Y plot and iX,iY plot so that four dimensions are represented in a plane. The application of this scheme to space-time measurement is then identified with the Minkowski Plane which has identical properties with the complex plane, with this new interpretation of the absolute value of a complex number. (Auth.)
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Nahid Momeni Safarabad
2018-02-01
Full Text Available Objective: This study aimed at reporting the effect of the 3-phase model of eye movement desensitization and reprocessing in the treatment of a patient with borderline personality disorder.Method: A 33-year-old female, who met the DSM-IV-TR criteria for borderline personality disorder, received a 20-session therapy based on the 3-phase model of eye movement desensitization and reprocessing. Borderline Personality Disorder Checklist (BPD-Checklist, Dissociative Experience Scale (DES-II, Beck Depression Inventory-II-second edition (BDI-II, and Anxiety Inventory (BAI were filled out by the patient at all treatment phases and at the 3- month follow- up.Results: According to the obtained results, the patient’s pretest scores in all research tools were 161, 44, 37, and 38 for BPD-Checklist, DES-II, BDI-II, and BAI, respectively. After treatment, these scores decreased significantly (69, 14, 6 and 10 respectively. So, the patient exhibited improvement in borderline personality disorder, dissociative, depression and anxiety symptoms, which were maintained after the 3-month follow-up.Conclusion: The results supported the positive effect of phasic model of eye movement desensitization and reprocessing on borderline personality disorder.
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Huihui Yang
2018-04-01
Full Text Available The brief version of the Borderline Symptom List (BSL-23 is a self-rated scale developed from the initial 95-item version of Borderline Symptom List (BSL-95. The current study aimed to evaluate the psychometric properties of the Chinese version of the BSL-23. A total of 570 undergraduate students and 323 clinical patients completed the BSL-23, the borderline subscale of the Personality Diagnostic Questionnaire (PDQ-4+, the Center for Epidemiologic Studies Depression Scale (CES-D, the Barratt Impulsiveness Scale, 11th version (BIS-11, the Childhood Trauma Questionnaire (CTQ and the Attachment Style Questionnaire (ASQ. A Confirmatory Factor Analysis (CFA was conducted to test the one-factor structure of the BSL-23. Cronbach’s alpha, Omega coefficient, Split-Half coefficient, Mean Inter-Item Correlation (MIC and test-retest reliability were also measured. The correlations between the BSL-23 and other psychological variables were used to assess criterion-related validity and convergent validity. Participants who scored ≥ 5 on the borderline subscale of the PDQ-4+ were placed into the borderline personality disorder (BPD screening-positive group, while the others were placed into the screening-negative group. Independent sample t-tests were performed to examine the differences in BSL-23 scores between the BPD screening-positive group and the BPD screening-negative group. The CFA results supported the one-factor structure of the BSL-23 in both samples. The internal consistency was high both in the undergraduate sample (Cronbach’s α = 0.93, Omega = 0.95, Split-Half coefficient = 0.89, MIC = 0.38 and the clinical sample (Cronbach’s α = 0.97, Omega = 0.97, Split-Half coefficient = 0.96, MIC = 0.56. The test-retest reliability within 2 weeks was 0.62. The BSL-23 displayed moderate to high correlations with the PDQ-4+-Borderline subscale, the CES-D, the BIS-11, the CTQ and the ASQ (r = 0.35 – 0.70. In addition, the BSL-23 discriminated between
Yang, Huihui; Lei, Xiaoxia; Zhong, Mingtian; Zhou, Qi; Ling, Yu; Jungkunz, Martin; Yi, Jinyao
2018-01-01
The brief version of the Borderline Symptom List (BSL-23) is a self-rated scale developed from the initial 95-item version of Borderline Symptom List (BSL-95). The current study aimed to evaluate the psychometric properties of the Chinese version of the BSL-23. A total of 570 undergraduate students and 323 clinical patients completed the BSL-23, the borderline subscale of the Personality Diagnostic Questionnaire (PDQ-4+), the Center for Epidemiologic Studies Depression Scale (CES-D), the Barratt Impulsiveness Scale, 11th version (BIS-11), the Childhood Trauma Questionnaire (CTQ) and the Attachment Style Questionnaire (ASQ). A Confirmatory Factor Analysis (CFA) was conducted to test the one-factor structure of the BSL-23. Cronbach's alpha, Omega coefficient, Split-Half coefficient, Mean Inter-Item Correlation (M IC ) and test-retest reliability were also measured. The correlations between the BSL-23 and other psychological variables were used to assess criterion-related validity and convergent validity. Participants who scored ≥ 5 on the borderline subscale of the PDQ-4+ were placed into the borderline personality disorder (BPD) screening-positive group, while the others were placed into the screening-negative group. Independent sample t -tests were performed to examine the differences in BSL-23 scores between the BPD screening-positive group and the BPD screening-negative group. The CFA results supported the one-factor structure of the BSL-23 in both samples. The internal consistency was high both in the undergraduate sample (Cronbach's α = 0.93, Omega = 0.95, Split-Half coefficient = 0.89, M IC = 0.38) and the clinical sample (Cronbach's α = 0.97, Omega = 0.97, Split-Half coefficient = 0.96, M IC = 0.56). The test-retest reliability within 2 weeks was 0.62. The BSL-23 displayed moderate to high correlations with the PDQ-4+-Borderline subscale, the CES-D, the BIS-11, the CTQ and the ASQ ( r = 0.35 - 0.70). In addition, the BSL-23 discriminated between the BPD
Preventive Psychiatric Admission for Patients With Borderline Personality Disorder: A Pilot Study
Koekkoek, B.W.; Snoek, R. van der; Oosterwijk, K.; Meijel, B.K.G. van
2010-01-01
PURPOSE. The purpose of this study was to establish the preliminary effects of preventive psychiatric admission of patients with severe borderline personality disorder (BPD) on the rate of agreement over treatment, patient service use, and patient views on the intervention. DESIGN AND METHODS. A
Adolescent Disruptive Behavior and Borderline Personality Disorder Symptoms in Young Adult Men
Burke, Jeffrey D.; Stepp, Stephanie D.
2012-01-01
Very few studies have prospective information, especially regarding males, on the prediction of Borderline Personality Disorder (BPD) in adulthood from psychiatric disorders in childhood. Certain childhood disorders, however, have notably similar features in common with BPD. In particular, the affective dysfunction, hostility and interpersonal…
Stepp, Stephanie D.; Smith, Tiffany D.; Morse, Jennifer Q.; Hallquist, Michael N.; Pilkonis, Paul A.
2012-01-01
This study examined the prospective relationships among borderline personality disorder (BPD) symptoms, interpersonal problems, and types of aggressive behaviors (i.e., experiencing psychological and physical victimization and perpetrating psychological and physical aggression) in a psychiatric sample (N = 139) over the course of 2 years. We…
The Historical Origins of Spacetime
Walter, Scott
The idea of spacetime investigated in this chapter, with a view toward understanding its immediate sources and development, is the one formulated and proposed by Hermann Minkowski in 1908. Until recently, the principle source used to form historical narratives of Minkowski's discovery of spacetime has been Minkowski's own discovery account, outlined in the lecture he delivered in Cologne, entitled Space and time [1]. Minkowski's lecture is usually considered as a bona fide first-person narrative of lived events. According to this received view, spacetime was a natural outgrowth of Felix Klein's successful project to promote the study of geometries via their characteristic groups of transformations. Or as Minkowski expressed the same basic thought himself, the theory of relativity discovered by physicists in 1905 could just as well have been proposed by some late-nineteenth-century mathematician, by simply reflecting upon the groups of transformations that left invariant the form of the equation of a propagating light wave. Minkowski's publications and research notes provide a contrasting picture of the discovery of spacetime, in which group theory plays no direct part. In order to relate the steps of Minkowski's discovery, we begin with an account of Poincaré's theory of gravitation, where Minkowski found some of the germs of spacetime. Poincaré's geometric interpretation of the Lorentz transformation is examined, along with his reasons for not pursuing a four-dimensional vector calculus. In the second section, Minkowski's discovery and presentation of the notion of a world line in spacetime is presented. In the third and final section, Poincaré's and Minkowski's diagrammatic interpretations of the Lorentz transformation are compared.
Observer-rated coping associated with borderline personality disorder: an exploratory study.
Kramer, Ueli
2014-01-01
Little is known about coping specificities, as operationalization of the concept of affect regulation, in borderline personality disorder (BPD). It is most important to take into account methodological criticisms addressed to the self-report questionnaire approach and to compare BPD coping specificities to the ones of neighbouring diagnostic categories, such as bipolar disorder (BD). The present exploratory study compared the coping profiles of N = 25 patients presenting BPD to those of N = 25 patients presenting BD and to those of N = 25 healthy controls. All participants underwent a clinical interview that was transcribed and rated using the Coping Patterns observer-rater system. Results partially confirmed study hypotheses and showed differences between BPD patients and healthy controls in all coping domains (competence, resources and autonomy), whereas the only coping domain presenting a BPD-specific lack of skills, compared with the BD patients, was autonomy, a set of coping strategies facing stress appraised as challenge. These coping processes were linked to general and BPD symptomatology. These results extend conclusions of earlier studies on affect regulation processes in BPD and bear important clinical implications, in the context of dialectical behavior therapy and other therapeutic approaches. Limitations of this exploratory study, such as the small sample size, are acknowledged. Coping can be reliably assessed in the narrative process in an non-structured interview frame. Patients with borderline personality disorder present with a specific lack of skills in affect regulation related to autonomy issues, compared to patients with bipolar disorder and healthy controls. Lack of skills in accommodation to distressing emotions in borderline personality disorder is related to symptom gravity and may be treated using radical acceptance strategies. Copyright © 2012 John Wiley & Sons, Ltd.
Working Memory Development in Children with Mild to Borderline Intellectual Disabilities
Van der Molen, M. J.; Henry, L. A.; Van Luit, J. E. H.
2014-01-01
Background: The purpose of the current cross-sectional study was to examine the developmental progression in working memory (WM) between the ages of 9 and 16 years in a large sample of children with mild to borderline intellectual disabilities (MBID). Baddeley's influential WM model was used as a theoretical framework. Furthermore, the…
Dickens, Geoffrey L; Lamont, Emma; Gray, Sarah
2016-07-01
To establish whether mental health nurses responses to people with borderline personality disorder are problematic and, if so, to inform solutions to support change. There is some evidence that people diagnosed with borderline personality disorder are unpopular among mental health nurses who respond to them in ways which could be counter-therapeutic. Interventions to improve nurses' attitudes have had limited success. Systematic, integrative literature review. Computerised databases were searched from inception to April 2015 for papers describing primary research focused on mental health nurses' attitudes, behaviour, experience, and knowledge regarding adults diagnosed with borderline personality disorder. Analysis of qualitative studies employed metasynthesis; analysis of quantitative studies was informed by the theory of planned behaviour. Forty studies were included. Only one used direct observation of clinical practice. Nurses' knowledge and experiences vary widely. They find the group very challenging to work with, report having many training needs, and, objectively, their attitudes are poorer than other professionals' and poorer than towards other diagnostic groups. Nurses say they need a coherent therapeutic framework to guide their practice, and their experience of caregiving seems improved where this exists. Mental health nurses' responses to people with borderline personality disorder are sometimes counter-therapeutic. As interventions to change them have had limited success there is a need for fresh thinking. Observational research to better understand the link between attitudes and clinical practice is required. Evidence-based education about borderline personality disorder is necessary, but developing nurses to lead in the design, implementation and teaching of coherent therapeutic frameworks may have greater benefits. There should be greater focus on development and implementation of a team-wide approach, with nurses as equal partners, when working
Compulsive buying and borderline personality symptomatology.
Sansone, Randy A; Chang, Joy; Jewell, Bryan; Sellbom, Martin; Bidwell, Mark
2013-04-01
In this study, the authors investigated the relationship between compulsive buying and borderline personality disorder (BPD) symptomatology--two disorders possibly linked through impulsivity. Using a survey methodology in a cross-sectional consecutive sample of nonemergent female outpatients from an obstetrics/gynecology clinic, the authors assessed compulsive buying with the compulsive buying scale (CBS) and BPD symptomatology through the BPD scale of the personality diagnostic questionnaire-4 (PDQ-4) and the self-harm Inventory (SHI). In this sample, 8% of Caucasian women and 9% of African-American women scored positively for compulsive buying. The correlations between scores on the CBS and the PDQ-4 and SHI were 0.43 and 0.41, respectively-both statistically significant at the p buying and BPD, particularly among African-American women.
International Nuclear Information System (INIS)
Akkelin, S.V.; Sinyukov, Yu.M.
2004-01-01
A method allowing analysis of the overpopulation of phase space in heavy ion collisions in a model-independent way is proposed within the hydrodynamic approach. It makes it possible to extract a chemical potential of thermal pions at freeze-out, irrespective of the form of freeze-out (isothermal) hypersurface in Minkowski space and transverse flows on it. The contributions of resonance (with masses up to 2 GeV) decays to spectra, interferometry volumes, and phase-space densities are calculated and discussed in detail. The estimates of average phase-space densities and chemical potentials of thermal pions are obtained for SPS and RHIC energies. They demonstrate that multibosonic phenomena at those energies might be considered as a correction factor rather than as a significant physical effect. The analysis of the evolution of the pion average phase-space density in chemically frozen hadron systems shows that it is almost constant or slightly increases with time while the particle density and phase-space density at each space point decreases rapidly during the system's expansion. We found that, unlike the particle density, the average phase-space density has no direct link to the freeze-out criterion and final thermodynamic parameters, being connected rather to the initial phase-space density of hadronic matter formed in relativistic nucleus-nucleus collisions