386 research outputs found
Shintani cocycles and vanishing order of -adic Hecke -series at
Let be a Hecke character of finite order of a totally real number
field . By using Hill's Shintani cocyle we provide a cohomological
construction of the -adic -series associated to .
This is used to show that has a trivial zero at of order
at least equal to the number of places of above where the local
component of is trivial
On special zeros of -adic -functions of Hilbert modular forms
Let be a modular elliptic curve over a totally real number field . We
prove the weak exceptional zero conjecture which links a (higher) derivative of
the -adic -function attached to to certain -adic periods attached
to the corresponding Hilbert modular form at the places above where has
split multiplicative reduction. Under some mild restrictions on and the
conductor of we deduce the exceptional zero conjecture in the strong form
(i.e.\ where the automorphic -adic periods are replaced by the
\cL-invariants of defined in terms of Tate periods) from a special case
proved earlier by Mok. Crucial for our method is a new construction of the
-adic -function of in terms of local data
Solution of a uniqueness problem in the discrete tomography of algebraic Delone sets
We consider algebraic Delone sets in the Euclidean plane and
address the problem of distinguishing convex subsets of by X-rays
in prescribed -directions, i.e., directions parallel to nonzero
interpoint vectors of . Here, an X-ray in direction of a finite
set gives the number of points in the set on each line parallel to . It is
shown that for any algebraic Delone set there are four prescribed
-directions such that any two convex subsets of can be
distinguished by the corresponding X-rays. We further prove the existence of a
natural number such that any two convex subsets of
can be distinguished by their X-rays in any set of
prescribed -directions. In particular, this
extends a well-known result of Gardner and Gritzmann on the corresponding
problem for planar lattices to nonperiodic cases that are relevant in
quasicrystallography.Comment: 21 pages, 1 figur
Application of Incident Command Structure to clinical trial management in the academic setting: principles and lessons learned
Background Clinical trial success depends on appropriate management, but practical guidance to trial organisation and planning is lacking. The Incident Command System (ICS) is the ‘gold standard’ management system developed for managing diverse operations in major incident and public health arenas. It enables effective and flexible management through integration of personnel, procedures, resources, and communications within a common hierarchical organisational structure. Conventional ICS organisation consists of five function modules: Command, Planning, Operations, Logistics, and Finance/Administration. Large clinical trials will require a separate Regulatory Administrative arm, and an Information arm, consisting of dedicated data management and information technology staff. We applied ICS principles to organisation and management of the Prehospital Use of Plasma in Traumatic Haemorrhage (PUPTH) trial. This trial was a multidepartmental, multiagency, randomised clinical trial investigating prehospital administration of thawed plasma on mortality and coagulation response in severely injured trauma patients. We describe the ICS system as it would apply to large clinical trials in general, and the benefits, barriers, and lessons learned in utilising ICS principles to reorganise and coordinate the PUPTH trial. Results Without a formal trial management structure, early stages of the trial were characterised by inertia and organisational confusion. Implementing ICS improved organisation, coordination, and communication between multiple agencies and service groups, and greatly streamlined regulatory compliance administration. However, unfamiliarity of clinicians with ICS culture, conflicting resource allocation priorities, and communication bottlenecks were significant barriers. Conclusions ICS is a flexible and powerful organisational tool for managing large complex clinical trials. However, for successful implementation the cultural, psychological, and social environment of trial participants must be accounted for, and personnel need to be educated in the basics of ICS
Brief of Amicus Curiae, Michael E. Spiess, et al, in Support of Lisa M. Avagliano, et al
https://digitalcommons.nyls.edu/sumitomo_briefs/1000/thumbnail.jp
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