The spin Hamiltonian of tetragonal lamellar antiferromagnets is shown to contain several novel anisotropies. Symmetry allows bond-dependent anisotropic exchange interactions, which lead to (a) interplane mean-field coupling and (b) an in-plane anisotropy which vanishes classically but arises from quantum zero point energy (QZPE). A similar QZPE involving the interplane isotropic interaction pre...

Much of our understanding of creditor rights is based on the notion that better enforcement of contracts reduces borrowing costs, thereby relaxing financial constraints. But what if these rights are too strong? We empirically investigate this question by examining the effect of a securitization reform that strengthened secured creditors rights on corporate debt structure. Strikingly, we find th...

Receptor activity-modifying proteins (RAMP13) determine the selectivity of the class B GPCRs calcitonin receptor (CTR) and the CTR-like receptor (CLR), for calcitonin (CT), amylin (Amy), CGRP, and adrenomedullin (AM) peptides. RAMP1/2 alter CLR selectivity for CGRP/AM in part by RAMP1 W84 or RAMP2 E101 contacting the distinct CGRP/AM C-terminal residues. It is unclear if RAMPs use a similar mec...

This paper describes three programming problems that are simple enough to be used in the beginning of a CS undergraduate program but also interesting enough to be worth exploring with different approaches. We are able to apply a mixture of programming practices, abstraction and algebraic approaches to the problems, so that these subjects may be presented as complementary and allowing for clear ...

•CYRI-B structure reveals homology to CYFIP of the Scar/WAVE complex•CYRI-B shares a conserved interface with for Rac1 interaction•CYRI proteins form autoinhibited dimers that compete binding•Rac1-CYFIP model shows potential steric clashes RAC1 is major regulator actin dynamics, GTP-bound promoting assembly via complex. CYRI competes interaction in feedback loop regulating dynamics. Here, we re...

Objective: To develop a replicable, collaborative framework for standardizing the interfaces of software services important to healthcare. Design: Iterative, peer-reviewed development of a framework for generating interoperable service specifications that build on existing and ongoing standardization efforts. The framework was created under the auspices of the Healthcare Services Specification ...

This paper focuses on the factors which influence collaborative learning in distance education. Distance education has been around for many years and the use of collaborative learning techniques in distance education is becoming increasingly popular. Several studies have demonstrated the superiority of collaborative learning over traditional modes of learning and it has been identified as a pot...