We consider instances of the Stable Roommates problem that arise from geometric representation of participants preferences: a participant is a point in a metric space, and his preference list is given by sorted distances to the other participants. We observe that, unlike in the general case, if there are no ties in the preference lists, there always exists a unique stable matching; a simple gre...

For examining vitamins, exact quantitations in natural matrices are essential. Up to date, one of the most accurate quantitation methods is the stable isotope dilution assay (SIDA), which is based on the use of isotopically labelled analogues of the analytes as internal standards. The merits of SIDA include the ideal compensation for losses, superior specificity and enhanced sensitivity due to ...

In this paper we describe an efficient algorithm that decides if a stable matching exists for a generalized stable roommates problem, where, instead of linear preferences, agents have partial preference orders on potential partners. Furthermore, we may forbid certain partnerships, that is, we are looking for a matching such that none of the matched pairs is forbidden, and yet, no blocking pair ...

It is known that there may not exist any stable matching for a given instance of the stable roommates problem. A stable partition is a structure that generalizes the notion of a stable matching; Tan (1991) proved that every instance of the stable roommates problem contains at least one such structure. In this paper we propose a new algorithm for finding a stable partition, and hence a new algor...

OBJECTIVE To describe trends in rates of prescribing of high-dose opioid formulations and variations in opioid product selection across Canada. DESIGN Population-based, cross-sectional study. SETTING Canada. PARTICIPANTS Retail pharmacies dispensing opioids between January 1, 2006, and December 31, 2011. MAIN OUTCOME MEASURES Opioid dispensing rates, reported as the number of units disp...

While speech synthesis based on Hidden Markov Models (HMMs) has been developed to successfully synthesize stable and intelligible speech with flexibility and small footprints in recent years, HMM-based method is still incapable to generate the speech with good quality and high naturalness. In this study, a hybrid method combining the unit-selection and HMMbased methods is proposed to compensate...

This article discusses how firms innovate within and across firm boundaries by reconfiguring their resources and business units over time. Focusing on acquisitions and internal development as key aspects of business dynamics, the authors track the evolution of 87 product lines and 88 business units in Johnson & Johnson’s medical sector from 1975 to 1997. The study highlights the dual importance...

cosmic rays in the upper troposphere (9000 meters to 15000 meters) initiate the followingnuclear chemical reaction: 1n + 14n => 14c + 1h. previous research has shown a strong effect of latitude onthe abundance of neutrons from cosmic rays. however, to date, there has been little exploration of therelationship between the latitude effect for cosmic-ray neutrons and latitudinal variations of stab...

OBJECTIVE To evaluate enteral feeding practices in neonatal units in different countries and on different continents. DESIGN A web-based survey of 127 tertiary neonatal intensive care units in Australia, Canada, Denmark, Ireland, New Zealand, Norway, Sweden and the UK. RESULTS 124 units (98%) responded. 59 units (48%) had a breast milk bank or access to donor human milk (Australia/New Zeala...

The (001) surface of the emerging photovoltaic material cesium lead triiodide (CsPbI3 ) is studied. Using first-principles methods, we investigate atomic and electronic structure cubic ({\alpha}) orthorhombic ({\gamma}) CsPbI3 . For both phases, find that CsI-termination more stable than PbI2-termination. CsI-terminated surface, then compute analyse phase diagram. We observe surfaces with added...