An r-unform n-vertex hypergraph H is said to have the Manickam-Miklós-Singhi (MMS) property if for every assignment of weights to its vertices with nonnegative sum, the number of edges whose total weight is nonnegative is at least the minimum degree of H. In this paper we show that for n > 10r, every r-uniform n-vertex hypergraph with equal codegrees has the MMS property, and the bound on n is ...

In recent years, there have been many exchanges of perspectives and debates in the field of conceptual change. Most of the classical views on conceptual change have been criticized, and there have been recent discussions around bridging the cognitive and socio-cultural approaches in the research on conceptual change. On the other hand, researchers and educators in the knowledge building communi...

The isometry group of a compact n-dimensional hyperbolic man-ifold is known to be finite. We show that for every n ≥ 2, every finite group is realized as the full isometry group of some compact hyperbolic n-manifold. The cases n = 2 and n = 3 have been proven by Greenberg [G] and Ko-jima [K], respectively. Our proof is non constructive: it uses counting results from subgroup growth theory to sh...

1 Title: Intrafascicular Stimulation of Monkey Arm Nerves Evokes Coordinated Grasp and Sensory 1 Responses 2 Contributing authors: Noah M. Ledbetter, Christian Ethier, Emily R. Oby, Scott D. Hiatt, 3 Andrew M. Wilder, Jason H. Ko, Sonya P. Agnew, Lee E. Miller, and Gregory A. Clark 4 Department of Bioengineering, University of Utah, Salt Lake City, UT, 84112, USA; 5 Department of Physiology, Fe...

Building an information society (which will be passing us on the knowledge society) can not be done without research and investment projects, both in ICT and education. Competence is the ultimate desire in Romanian higher education system and not even technologies or theories or other kind of approach will not eliminate/neglect professor-student relationship. In this paper, we will analyze the ...

Single and multipass two-body and three-body abrasive wear behaviour of various polyaryletherketone composites have been carried out by using a pin-on-disc machine and a rubber wheel abrasion test (RWAT) rig. Abrasive wear studies were conducted under different loads and sliding distances. Comparative wear performance of all the composites at different loads shows that specific wear rate (Ko) o...

The Erdős–Ko–Rado theorem determines the largest μp-measure of an intersecting family of sets. We consider the analogue of this theorem to t-intersecting families (families in which any two sets have at least t elements in common), following Ahlswede and Khachatrian [1, 2]. We present a proof of the μp version of their theorem, which is adapted from the earlier proofs. Due to the simpler nature...

This paper inlroduces the thermal column or the cold neutron guide beam of the 20 MW NBSR at the National Institute of Standards and Technology as a direct k o measurement facility. Measurement of k o at this facility not only produces accurate values, but avoids the additional correction factors needed in other measurement methods. The ko of Sb, Ag and Cr with respect to Sc as monitor have bee...

Let [n]r be the complete r-partite hypergraph with vertex classes of size n. It is an easy exercise to show that every set of more than (k − 1)nr−1 edges in [n]r contains a matching of size k. We conjecture the following rainbow version of this observation: If F1, F2, . . . , Fk ⊆ [n]r are of size larger than (k− 1)nr−1 then there exists a rainbow matching, i.e. a choice of disjoint edges fi ∈ ...

This keynote introduces definitions and concepts related to eAccessibility and its potential for the inclusion of people with disabilities. It defends the idea that a fully accessible society can only result from a global policy where all players are involved. It examines and discusses the main instruments that should support such a policy, namely standards and recommendations, development meth...