Introducing random walk measures to space syntax

We introduce Random Walk Closeness (RWC) to the space syntax computational paradigm. Random walks are stochastic processes in which an unbiased walker traverses a network purely based on his current location. Random walks have been used by space syntax in an agent based scenario, where results are simulation based. Here, the results are mathematical based, i.e. RWC is derived from access times, which are the average number of steps it takes to walk between locations. Results suggest an improvement in correlating pedestrian movement over Integration, RA and network Closeness

The impact of a community of practice on the development of the three tiers of organizational intelligence in the institutional research professional

The demands and expectations on Institutional Research (IR) have continued to expand over the years, yet there have been no studies on cost effective ways to develop and maintain the knowledge and skills needed by professionals in the field. This quantitative study supplemented with limited qualitative data explored the impact of participating in an Institutional Research (IR) affinity group on the development of the three tiers of organizational intelligence and the strength and nature of the social network that exists among the participants. Surveys were collected from members of a community college IR affinity group in New Jersey along with minutes from the IR affinity group meetings and postings on the IR affinity group listserv. Data were analyzed using SPSS for the quantitative analysis and Node XL for the social network analysis. The findings suggest that communities of practice, such as the IR affinity group, can aid the development and maintenance of some of the skills and knowledge related to the three tiers of organizational intelligence in the field of IR. These results also support King and Bouchard\u27s (2011) assertion that professional development efforts need to establish clear learning goals that are coordinated, directed, and supported by distributed leadership to build capacity

Barcoding of the cytochrome oxidase I (COI) indicates a recent introduction of Ciona savignyi into New Zealand and provides a rapid method for Ciona species discrimination

Mitochondrial cytochrome oxidase I (COI) gene sequencing (DNA barcoding) of Ciona specimens from New Zealand (NZ) led to the first record of the solitary ascidian Ciona savignyi in the Southern Hemisphere. We sought to quantify C. savignyi COI genetic diversity around the NZ archipelago and to compare this with diversity within C. savignyi's native range in the north-west Pacific. Ciona savignyi specimens were collected from two NZ sites and from three sites around Japan. COI sequences (595 bp) were amplified and measures of genetic diversity were calculated. Based on differences between their COI sequences we developed a PCR-based assay to distinguish C. savignyi from the morphologically similar C. intestinalis. A total of 12 C. savignyi COI haplotypes were recovered from the 76 samples. Of the four haplotypes observed in NZ, two were unique. From the 10 haplotypes observed in the Japan samples, eight were unique. The C. savignyi populations in Japan were found to contain higher haplotype diversity when compared with those in NZ. The NZ samples contained only a small subset of the haplotype variation of the Japan samples, however, NZ samples did harbor two haplotypes not observed in the Japan samples. A PCR-based assay developed from the COI sequences was able to reliably discriminate the two Ciona species. The low COI genetic diversity within the two NZ C. savignyi populations sampled is consistent with a founder effect associated loss of genetic diversity. The robust PCR-based assay for distinguishing C. savignyi and C. intestinalis may find application in ecological and taxonomic studies and can be applied to both archival materials and live animals

Do Blue Flag promotions influence tourists’ willingness to pay a price premium for coastal destinations?

The Blue Flag is a popular eco-label in tourism. This study aims at examining the effectiveness of Blue Flag promotion on tourists' willingness to pay a price premium to coastal destinations via two online experiments. Study 1 shows (n = 152) that the Blue Flag stimulates higher willingness to pay a price premium for coastal destinations directly as well as indirectly through self-congruity and destination brand identification. Study 2 (n = 160) used a new sample to enhance external validity and generalizability of the Study 1 findings. Study 2 shows that destination brand quality and destination brand identification serially mediate the effect of Blue Flag promotions on the tourist's willingness to pay a price premium. The findings suggest that destination managers should deploy the Blue Flag Logo in destination promotions to enhance self-congruence, destination brand identification, perceived destination quality, and the tourist's willingness to pay a price premium

The Impact of Political Factors on International Student Mobility

International student mobility contributes to a knowledge-based economy and forms an important component of a highly educated migration. This article aims to identify how far political factors – including political discrimination, restrictions, freedom, UK migration policies and social cultural norms and policies - enhance or inhibit individuals’ capabilities to become mobile. It offers a novel conceptualisation of mobility drawing on Structuration Theory and Capability Approach to reveal the link between structure, capability and agency in the mobility process. Semi-structured in-depth interviews were conducted with forty PhD students, two professors from Turkey in the UK and three international education experts. A capability list established shows how mobility occurs when students’ capabilities (freedoms) fail to flourish and they lose their power (capacity) to influence society due to the political environment in the home country. ‘Impo-mobility’, derived from the word ‘imposed’, is proposed to refer to highly educated people having to become mobile as a result of impositions placed upon them by home and host government political practices. An appealing political environment is necessary if Turkey is not to lose highly educated individuals and the UK is to remain a global player in international higher education

Skip-Thought Vectors

We describe an approach for unsupervised learning of a generic, distributed sentence encoder. Using the continuity of text from books, we train an encoder-decoder model that tries to reconstruct the surrounding sentences of an encoded passage. Sentences that share semantic and syntactic properties are thus mapped to similar vector representations. We next introduce a simple vocabulary expansion method to encode words that were not seen as part of training, allowing us to expand our vocabulary to a million words. After training our model, we extract and evaluate our vectors with linear models on 8 tasks: semantic relatedness, paraphrase detection, image-sentence ranking, question-type classification and 4 benchmark sentiment and subjectivity datasets. The end result is an off-the-shelf encoder that can produce highly generic sentence representations that are robust and perform well in practice. We will make our encoder publicly available.Comment: 11 page

Phase 2 of the Multiple Provider Employment Zones Qualitative Study, DWP Research Report 399

This report presents the findings of a qualitative study of the operation and impact of the Multiple Provider Employment Zone (MPEZ) initiatives that have operated in four cities (London, Birmingham, Liverpool and Glasgow) since 20041. The study builds on earlier work by Cambridge Policy Consultants (Hirst et al. 2006), which concentrated on issues related to the early establishment of the MPEZ initiative and the initial experiences of Providers, Jobcentre Plus districts and customers. The Phase 2 research took place approximately one year on from the Phase 1 study and focused on tracking developments in the operation of MPEZ as the initiative became more established. The study involved interviews with EZ Providers (managers and Advisers), Jobcentre Plus representatives (managers and Advisers) and customers (young people (aged 18-24) claiming Jobseeker’s Allowance (JSA), who would otherwise have returned to New Deal for Young People (NDYP)2, lone parents receiving Income Support and early entrants – see section 1.6 for full details). In order to gain a wider perspective, researchers also spoke to representatives of organisations that have employed MPEZ participants and a number of stakeholder organisations with a broad interest in local labour market policies and programmes in the MPEZ areas. In total, the research involved interviews or group discussions with over 300 individuals, providing a range and depth of qualitative information that allows a detailed picture to be established of the way that MPEZs developed between mid- 2005 and mid-2006, including the experiences of employers and the labour market destinations of MPEZ participants. A central issue addressed in the research and in this report is the ‘multiple’ element of the initiative and the value that is added through the existence of more than one Provider in each MPEZ area. Questions of allocation, choice, specialisation, competition and innovation are considered from the perspectives of Providers, Jobcentre Plus, customers, employers and stakeholders and the final sections present some conclusions and issues for consideration in relation to these topics

Virus Sharing, Genetic Sequencing, and Global Health Security

The WHO’s Pandemic Influenza Preparedness (PIP) Framework was a milestone global agreement designed to promote the international sharing of biological samples to develop vaccines, while that ensuring poorer countries would have access to those vaccines. Since the PIP Framework was negotiated, scientists have developed the capacity to use genetic sequencing data (GSD) to develop synthetic viruses rapidly for product development of life-saving technologies in a time-sensitive global emergency—threatening to unravel the Framework. Access to GSD may also have major implications for biosecurity, biosafety, and intellectual property (IP). By rendering the physical transfer of viruses antiquated, GSD may also undermine the effectiveness of the PIP Framework itself, with disproportionate impacts on poorer countries. We examine the changes that need to be made to the PIP Framework to address the growing likelihood that GSD might be shared instead of physical virus samples. We also propose that the international community harness this opportunity to expand the scope of the PIP Framework beyond only influenza viruses with pandemic potential. In light of non-influenza pandemic threats such as the Middle East Respiratory Syndrome (MERS) and Ebola, we call for an international agreement on the sharing of the benefits of research – such as vaccines and treatments – for other infectious diseases to ensure not only a more secure and healthy world, but also a more just world, for humanity

IMMUNOLOGICAL TOLERANCE TO A HAPTEN : I. INDUCTION AND MAINTENANCE OF TOLERANCE TO TRINITROPHENYL WITH TRINITROBENZENE SULFONIC ACID

Treatment of mice with a nonimmunogenic preparation of free reactive hapten, trinitrobenzene sulfonic acid (TNBS), leads to the induction of a state of tolerance to the hapten, 2,4,6-trinitrophenyl (TNP). This is determined by the lack of response to the haptenic moiety in an immunogenic hapten-carrier conjugate (TNP-SRBC) as assayed both by serum antibody titrations and the hemolytic plaque assay. The tolerance produced is specific for the hapten, since the anticarrier responses are essentially unaltered compared with the control values. The unresponsiveness induced by TNBS treatment is a dose-dependent phenomenon, becoming less complete at lower doses of TNBS. The tolerance is of a definite length, both in its induction phase and in the duration of the established unresponsive state. Tolerance can be maintained and extended, and may also be reentered once escape has been initiated