Entanglement dynamics in the Lipkin-Meshkov-Glick model

The dynamics of the one-tangle and the concurrence is analyzed in the Lipkin-Meshkov-Glick model which describes many physical systems such as the two-mode Bose-Einstein condensates. We consider two different initial states which are physically relevant and show that their entanglement dynamics are very different. A semiclassical analysis is used to compute the one-tangle which measures the entanglement of one spin with all the others, whereas the frozen-spin approximation allows us to compute the concurrence using its mapping onto the spin squeezing parameter.Comment: 11 pages, 11 EPS figures, published versio

Loading and unloading operations in container terminals

Department of Logistics, Faculty of BusinessAuthor name used in this publication: George L. Vairaktarakis2003-2004 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Improved algorithm for maximizing service of carousel storage

Department of Logistics2005-2006 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Coordinating production and distribution of jobs with bundling operations

Department of Logistics2006-2007 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Ecological Carrying Capacity of Saanane Island Proposed National Park, Mwanza, Tanzania

The study on ecological carrying capacity of Saanane Island aimed at assessing stocking capacity of the island to provide guidance to the introduction of animals to enhance its ecological value and tourism potential. To evaluate the ecological carrying capacity of the Island, wet and dry season data were collected in 2014 for woody, herbaceous and grass species using PCQ and quadrat methods Wet and dry weights biomass of the forage material was measured to determine dry matter content and are presented as dry weight biomass. Total productivity was 4,280 kg/ha dry weight in wet season which increased to 7,965 kg/ha dry weight in dry season due to absence of disturbance such as limited grazing and fire which is rarely practiced on the Island. Woody species had a total density of 491woody plants ha-1, which was not significant using unpaired two sample t test. This study suggest that the range capability of Saanane Island is 6.76 ha/ animal metabolic requirement (GU) for wet season and 9.125 ha/GU for dry season and thus the productivity of the Island is capable of sustaining 43.5 GU in wet season and 32.2 GU in dry season based on the size of the Island estimated to be 3 km2. Key words: Ecology, Carrying capacity, Saanane Island, forage, herbivor

Machine scheduling with deliveries to multiple customer locations

Department of Logistics, Faculty of Business2005-2006 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Inequalities in reported cancer patient experience by socio-demographic characteristic and cancer site: evidence from respondents to the English Cancer Patient Experience Survey.

Patient experience is a critical dimension of cancer care quality. Understanding variation in experience among patients with different cancers and characteristics is an important first step for designing targeted improvement interventions. We analysed data from the 2011/2012 English Cancer Patient Experience Survey (n = 69,086) using logistic regression to explore inequalities in care experience across 64 survey questions. We additionally calculated a summary measure of variation in patient experience by cancer, and explored inequalities between patients with cancers treated by the same specialist teams. We found that younger and very old, ethnic minority patients and women consistently reported worse experiences across questions. Patients with small intestine/rarer lower gastrointestinal, multiple myeloma and hepatobiliary cancers were most likely to report negative experiences whereas patients with breast, melanoma and testicular cancer were least likely (top-to-bottom odds ratio = 1.91, P < 0.0001). There were also inequalities in experience among patients with cancers treated by the same specialty for five of nine services (P < 0.0001). Specifically, patients with ovarian, multiple myeloma, anal, hepatobiliary and renal cancer reported notably worse experiences than patients with other gynaecological, haematological, gastrointestinal and urological malignancies respectively. Initiatives to improve cancer patient experience across oncology services may be suitably targeted on patients at higher risk of poorer experience.This is the final version, originally published by Wiley in the European Journal of Cancer Care (http://onlinelibrary.wiley.com/doi/10.1111/ecc.12267/abstract)

An efficient algorithm for minimizing earliness, tardiness, and due-date costs for equal-sized jobs

Department of Logistics2008-2009 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Sexual orientation health inequality: Evidence from Understanding Society , the UK Longitudinal Household Study

Few studies from the United Kingdom have fully investigated inequalities between members of different sexual minority groups and heterosexuals over range of health outcomes. Using data from over 40,000 individuals, this study explores the health inequalities of sexual minority UK adults. We include respondents who identify as other and those who prefer not to say (PNS). Data come from wave three (2011–2012) of the nationally-representative Understanding Society, the UK Household Longitudinal Study. Sexual orientation was asked in the self-completion portion of the study. Markers of health include physical and mental functioning, minor psychological distress, self-rated health, substance use and disability. Multiple linear and logistic regression analyses tested for differences in markers of health between sexual orientation groups. Overall, heterosexual respondents had the best health while bisexual respondents had the worst. Gay and lesbian respondents reported poorer health than heterosexuals, specifically with regards to mental functioning, distress and illness status. The other and PNS respondents were most similar to each other and generally experienced fewer health inequalities than gay and lesbian respondents; they were less likely to use tobacco or alcohol. In sum, sexual minorities experience health inequality. The inclusion of other and PNS respondents has not been done in other studies and shows that while they may be healthier than gay/lesbian and bisexual respondents they still experiences poorer health than heterosexuals. Health promotion interventions are needed for these other and PNS individuals, who might not participate in interventions targeted toward known sexual minority groups