80 research outputs found
Pilon Fractures of the Base of the Proximal Phalanx: Direct Intraosseous Joint Reduction with Bone-Grafting and Mini-Screws
No full textHypopigmented papules on the upper trunk and forearm of a young man
No full textWhat is your diagnosis? © 2011 The International Society of Dermatology.Abbas O, 2010, J CUTAN PATHOL, V37, P1032, DOI 10.1111-j.1600-0560.2010.01575.x; Colbert RL, 2007, ARCH DERMATOL, V143, P19, DOI 10.1001-archderm.143.1.19; DALMAU J, 2006, J AM ACAD DERMATOL S, V55, P56; HALLOPEAU H, 1887, UN MED, V43, P742; Kreuter A, 2009, ARCH DERMATOL, V145, P1303, DOI 10.1001-archdermatol.2009.235; MEFFERT JJ, 1995, J AM ACAD DERMATOL, V32, P393, DOI 10.1016-0190-9622(95)90060-8; Meffert JJ, 1995, J AM ACAD DERMATOL, V32, P417; Oyama N, 2003, LANCET, V362, P118, DOI 10.1016-S0140-6736(03)13863-9; TREMAINE RDL, 1989, INT J DERMATOL, V28, P10; Wallace H J, 1971, Trans St Johns Hosp Dermatol Soc, V57, P90
Perspectives on Preference Aggregation
No full textFor centuries, the mathematical aggregation of preferences by groups, organizations or society has received keen interdisciplinary attention. Extensive 20th century theoretical work in Economics and Political Science highlighted that competing notions of “rational social choice” intrinsically contradict each other. This led some researchers to consider coherent “democratic decision making” a mathematical impossibility. Recent empirical work in Psychology qualifies that view. This nontechnical review sketches a quantitative research paradigm for the behavioral investigation of mathematical social choice rules on real ballot, experimental choice, or attitudinal survey data. The paper poses a series of open questions. Some classical work sometimes makes assumptions about voter preferences that are descriptively invalid. Do such technical assumptions lead the theory astray? How can empirical work inform the formulation of meaningful theoretical primitives? Classical “impossibility results” leverage the fact that certain desirable mathematical properties logically cannot hold universally in all conceivable electorates. Do these properties nonetheless hold in empirical distributions of preferences? Will future behavioral analyses continue to contradict the expectations of established theory? Under what conditions and why do competing consensus methods yield identical outcomes?
Konvent der unfallchirurgischen Lehrstuhlinhaber : Eckpunkte zur unfallchirurgischen Aufgabenstellung an den Universitäten – Strukturüberlegungen zu Krankenversorgung, Forschung und Lehre
No full textMarken als psychologische Kategorien = Brands as psychological categories : Möglichkeiten und Grenzen einer sozial-kognitiven Sichtweise : Potentials and Limits of a social cognition approach
No full textSubtrochanteric femoral fractures: influence of patient age on fracture type and mobility
No full textEffects of low-energy NMR on posttraumatic osteoarthritis: observations in a rabbit model
No full textTreatment of Fractures of the Thoracolumbar Spine: Recommendations of the Spine Section of the German Society for Orthopaedics and Trauma (DGOU)
No full textPatterns of Perfusion of Free ALT Flaps vs. Propeller Flaps of the Lower Extremity: A Comparative Study with the Use of LDSP
No full textIntroduction: Perforator-based fasciocutaneous flaps are particularly suitable for soft tissue reconstruction of the lower extremities. The most commonly used flap is the microvascular Anterior Lateral Thigh Flap (ALT). Pedicled propeller-type flaps are less frequently utilized due to higher complication rates. The aim of this study was to compare postoperative perfusion patterns of these fundamentally different flaps to increase their basic understanding. Methods: A retrospective data analysis was performed (2017–2022), including patients who underwent flap reconstruction of the lower extremity either with a perforator-based pedicled Propeller flap or free tissue transfer with an ALT flap. Only patients with documented postoperative perfusion monitoring of the flap using the laser Doppler spectrophotometry system (LDSP) were included. Demographic data, comorbidities and perioperative data as well as perfusion profiles given by the LDSP were analyzed. Results: Seven patients who received a propeller flap and 18 who received a free ALT were identified. Defects were most often due to trauma (Propeller flap n = 5; 71.1%; ALT n = 7; 38.9%) and chronic wounds (Propeller flap n = 1; 14.3%; ALT n = 5; 27.8%). The most common complication was prolonged wound healing (Propeller flap n = 3; 42.9%; ALT n = 8; 44.4%). In cases with postoperative surgical complications, a distinctly delayed recovery in perfusion of propeller flaps was seen during the first 72 h after surgery. Conclusions: Propeller and ALT flaps exhibit distinct perfusion patterns, with Propeller flaps showing a congestion-prone profile (elevated rHB, delayed hyperperfusion) and ALT flaps an inflow-dependent, ischemia-driven profile (lower rHB and SO2)
Planetary stewardship in an urbanizing world: beyond city limits
No full textCities are rapidly increasing in importance as a major factor shaping the Earth system, and as such must take corresponding responsibility. With currently over half of the world population, cities are supported by resources originating from primarily rural regions that are often located around the world far distant from the urban loci of use. The multiple and complex environmental and social challenges the world faces require interconnected solutions and a coordinated governance approach to planetary stewardship. There is a new opportunity to conceptualize a key component of planetary stewardship as a global system of cities that develop sustainable processes and policies in concert with its non-urban areas. The potential for cities to cooperate as a system and with rural connectivity could not only increase their capacity to effect change and foster stewardship at the planetary scale but also increase their resource security
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