87,191 research outputs found
Informing about diagnosis, relapse and progression of disease--communication with the terminally III cancer patient.
No full textThis chapter focuses on four crucial situations representing important challenges for physician-patient communication: diagnosis, relapse, progression of disease and terminal illness. The psychological aspects of each situation are discussed and a framework for communication is provided. The aim of the chapter is to invite the oncology clinician to think about these different stages of disease and to support him or her in the communication with the patient. Communication with cancer patients is a difficult task in clinical practice and it is especially challenging when informing about diagnosis and prognosis, when relapse occurs or when the disease is progressing. Physician-patient communication has undergone considerable changes and has become-compared to decades before, when medicine was based on a more paternalistic model of care--a central duty and challenge of the oncology clinician. The following chapter aims to discuss key elements of communication in the above-mentioned specific situations; it is based on our clinical experience as psycho-oncologists and teachers of communication skills training (Razavi and Stiefel 1994; Stiefel and Razavi 1994; Razavi et al. 2003; Berney and Stiefel 2004; Delvaux et al. 2005; Voelter et al. 2005; Bragard et al. 2006).Journal ArticleReviewinfo:eu-repo/semantics/publishe
Higher order concentration on Stiefel and Grassmann manifolds
No full textGötze F, Sambale H. Higher order concentration on Stiefel and Grassmann manifolds. Electronic Journal of Probability . 2023;28: 79.We prove higher order concentration bounds for functions on Stiefel and Grassmann manifolds equipped with the uniform distribution. This partially extends previous work for functions on the unit sphere. Technically, our results are based on logarithmic Sobolev techniques for the uniform measures on the manifolds. Applications include Hanson-Wright type inequalities for Stiefel manifolds and concentration bounds for certain distance functions between subspaces of Rn
Spacetime topology (I) - Chirality and the third Stiefel-Whitney class
No full textThe standard model of particle physics poses certain limitations upon the topology of spacetime, most notably by imposing the triviality of an important family of characteristic classes, the Stiefel-Whitney classes. In this, the first of two articles, we present a physical interpretation of the first three Stiefel-Whitney classes. While the relationship of the first two to the existence of spinor fields has been known since the sixties, apparently no connection between the third class and microscopical physics seems to be known. We show that the third class is related to chirality.</p
Spacetime topology (I) - Chirality and the third Stiefel-Whitney class
No full textThe standard model of particle physics poses certain limitations upon the topology of spacetime, most notably by imposing the triviality of an important family of characteristic classes, the Stiefel-Whitney classes. In this, the first of two articles, we present a physical interpretation of the first three Stiefel-Whitney classes. While the relationship of the first two to the existence of spinor fields has been known since the sixties, apparently no connection between the third class and microscopical physics seems to be known. We show that the third class is related to chirality
ON THE STIEFEL-WHITNEY CLASSES OF MAPS AND HAEFLIGER'S OBSTRUCTIONS TO EMBEDDINGS : Dedicated to Professor Teiichi Kobayashi on his 60th birthday
No full textThe purposes of this article are (1) to more explicitly describe Haefliger's obstruction for a map f : M^n → N^{2n-k} to be homotopic to an embedding, (2) to show some relations among the Stiefel-Whitney classes of a map f and (3) to give methods to determine the Stiefel-Whitney classes of a map
Mass Partitions via Equivariant Sections of Stiefel Bundles
No full textWe consider a geometric combinatorial problem naturally associated to the
geometric topology of certain spherical space forms. Given a collection of
mass distributions on , the existence of affinely independent
regular -fans, each of which equipartitions each of the measures, can in
many cases be deduced from the existence of a -equivariant
section of the Stiefel bundle over , where
is the Stiefel manifold of all orthonormal -frames in
or , and
is the corresponding unit sphere. For example, the
parallelizability of when , or implies that any
two masses on can be simultaneously bisected by each of
pairwise-orthogonal hyperplanes, while when or 4, the triviality of the
circle bundle over the standard Lens Spaces
yields that for any mass on , there exist a pair of
complex orthogonal regular -fans, each of which equipartitions the mass.Comment: 11 pages, final versio
ON THE STIEFEL-WHITNEY CLASSES OF MAPS AND HAEFLIGER'S OBSTRUCTIONS TO EMBEDDINGS : Dedicated to Professor Teiichi Kobayashi on his 60th birthday
No full textThe purposes of this article are (1) to more explicitly describe Haefliger's obstruction for a map f : M^n → N^{2n-k} to be homotopic to an embedding, (2) to show some relations among the Stiefel-Whitney classes of a map f and (3) to give methods to determine the Stiefel-Whitney classes of a map
ON THE STIEFEL-WHITNEY CLASSES OF MAPS AND HAEFLIGER'S OBSTRUCTIONS TO EMBEDDINGS : Dedicated to Professor Teiichi Kobayashi on his 60th birthday
No full textThe purposes of this article are (1) to more explicitly describe Haefliger's obstruction for a map f : M^n → N^{2n-k} to be homotopic to an embedding, (2) to show some relations among the Stiefel-Whitney classes of a map f and (3) to give methods to determine the Stiefel-Whitney classes of a map.departmental bulletin pape
Neurointerventional Surgery: An Evidence Based Approach/ by: Park, Min S., Kalani, M. Yashar S., Stiefel, Michael F.
No full textIncludes bibliographical references and indexUnique neurointerventional surgery resource analyzes landmark literature to inform optimal patient management The field of neurointerventional surgery is rapidly expanding with an ever-accelerating pace of technological innovations. While industry plays a significant role in designing new technology and defining indications for its use, practitioners need to evaluate and determine the most efficacious treatments for their patients. Neurointerventional Surgery: An Evidence-Based Approach by renowned endovascular neurosurgeons Min Park, M. Yashar S. Kalani, and Michael F. Stiefel examines the mo.1 online resource (250 pages)
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