13,958 research outputs found
Precision Measurements of the Top Quark Mass at the Tevatron
We report precision measurements of the top quark mass using events collected
by the D{\O}and CDF II detectors from collisions at
TeV at the Fermilab Tevatron. Measurements are presented in multiple decay
channels. In addition, we present a combination of the most precise
measurements in each channel to date: Precision Measurements of the Top Quark Mass at
the TevatronComment: 4 pages, 7 figure
Submodular Function Maximization for Group Elevator Scheduling
We propose a novel approach for group elevator scheduling by formulating it
as the maximization of submodular function under a matroid constraint. In
particular, we propose to model the total waiting time of passengers using a
quadratic Boolean function. The unary and pairwise terms in the function denote
the waiting time for single and pairwise allocation of passengers to elevators,
respectively. We show that this objective function is submodular. The matroid
constraints ensure that every passenger is allocated to exactly one elevator.
We use a greedy algorithm to maximize the submodular objective function, and
derive provable guarantees on the optimality of the solution. We tested our
algorithm using Elevate 8, a commercial-grade elevator simulator that allows
simulation with a wide range of elevator settings. We achieve significant
improvement over the existing algorithms.Comment: 10 pages; 2017 International Conference on Automated Planning and
Scheduling (ICAPS
Your Employees and Cancer – Working Together
This brochure on employees with cancer and the Americans with Disabilities Act (ADA) is one of a series on human resources practices and workplace accommodations for persons with disabilities edited by Susanne M. Bruyère, Ph.D., CRC, SPHR, Director, Program on Employment and Disability, School of Industrial and Labor Relations – Extension Division, Cornell University. Cornell University was funded in the early 1990’s by the U.S. Department of Education National Institute on Disability and Rehabilitation Research as a National Materials Development Project on the employment provisions (Title I) of the ADA (Grant #H133D10155). These updates, and the development of new brochures, have been funded by Cornell’s Program on Employment and Disability, the Pacific Disability and Business Technical Assistance Center, and other supporters
A World of Fields
Trope ontology is exposed and confronted with the question where one trope ends and another begins. It is argued that tropes do not have determinate boundaries, it is arbitrary how tropes are carved up. An ontology, which I call field ontology, is proposed which takes this into account. The material world consists of a certain number of fields, each of which is extended over all of space. It is shown how field ontology can also tackle the problem of determin-able properties and the problem of completeness of things
The Orion constellation as an installation - An innovative three dimensional teaching and learning environment
Visualising the three dimensional distribution of stars within a
constellation is highly challenging for both students and educators, but when
carried out in an interactive collaborative way it can create an ideal
environment to explore common misconceptions about size and scale within
astronomy. We present how the common table top activities based upon the Orion
constellation miss out on this opportunity. Transformed into a walk-through
Orion installation that includes the position of our Solar system, it allows
the students to fully immerse themselves within the model and experience
parallax. It enables participants to explore within the installation many other
aspects of astronomy relating to sky culture, stellar evolution, and stellar
timescales establishing an innovative learning and teaching environment.Comment: 2 pages, submitted to The Physics Teacher - Colum
Exploring the thermodynamics of spin-1 Rb Bose Gases with synthetic magnetization
In this work, we study the thermodynamic properties of a spin-1 Bose gas
across the Bose-Einstein condensation transition. We present the theoretical
description of the thermodynamics of a trapped ideal spin-1 Bose gas and we
describe the phases that can be obtained in this system as a function of the
temperature and of the populations in the different spin components. We propose
a simple way to realize a "synthetic magnetization" that can be used to probe
the entire phase diagram while keeping the real magnetization of the system
fixed. We experimentally demonstrate the use of such method to explore
different phases in a sample with zero total magnetization. Our work opens up
new perspectives to study isothermal quenching dynamics through different
magnetic phases in spinor condensates
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