401 research outputs found
Big Data Analysis of Population Flow between TfL Oyster and Bicycle Hire Networks in London
This study seeks to undertake an initial analysis of the likely flow of people between the Tube to bicycle
hire network in London. Data for the two networks were extracted for a month (April and June 2012) in
order to establish the strength of the relationship between them. The results quantify the extent to which
Tube commuters impact the capacity utilization of the bicycle network. We expect this research to have
implications in the expansion and maintenance of bicycle hire in London and similar schemes around
the world
Behavioural Analysis of Smart Card Data
Smart card data captured by automated fare collection (AFC) systems are a valuable resource for the
analysis of human behaviour. The paper presents an approach of processing transit data for clustering
analysis to identify user activities with similar characteristics. The effectiveness of the methods was
evaluated using performance evaluation metrics. An external evaluation was used to compare the results
with the ground truth. The results demonstrate that simple methods can produce good results when the
input dataset used in the model is prepared and enriched with the most relevant features set
2-(5-CycloÂhexyl-3-isopropylÂsulfanyl-1-benzofuran-2-yl)acetic acid
In the title compound, C19H24O3S, the cylohexyl ring adopts a chair conformation. In the crystal, molecules are linked via pairs of O—H⋯O hydrogen bonds, forming inversion dimers. These dimers are further stabilized by weak interÂmolecular C—H⋯π interÂactions, and by slipped π–π interÂactions between the furan rings of adjacent molÂecules [centroid–centroid distance = 3.557 (2) Å, interÂplanar distance = 3.301 (2) Å and slippage = 1.325 (2) Å]
Knowledge, attitudes and practices around health research: the perspective of physicians-in-training in Pakistan
<p>Abstract</p> <p>Background</p> <p>Health research training is an essential component of medical education and a vital exercise to help develop physician research skills. This study was carried out to assess the level of knowledge, attitudes and practices towards research amongst a group of Post Graduate Medical Trainees (PGMTs') at Aga Khan University (AKU), Pakistan.</p> <p>Methods</p> <p>A cross sectional health research survey was carried out on all PGMTs' at AKU Pakistan. AKU is a tertiary care health facility which offers residency in 28 specialties and fellowship in 16 programs. Knowledge, attitudes and practices related to health research were assessed using a pretested, structured and validated questionnaire. Health research related practices of the residents were examined using questions graded on Likert scale.</p> <p>Results</p> <p>Mean percentage score ± SD on the knowledge scale was 36.9% ± 20.2 and 47.19% ± 25.18 on the attitude scale. Of 104(55.6%) who had previously participated in research 28(26.9%) had been involved in basic science research only, 62(59.6%) in clinical research and 14(13.5%) had participated in both clinical and basic science research projects. 88(47.1%) planned to pursue a future research career. Those who planned to pursue a future research career had more positive health research attitudes p < 0.001. Limited time (45%), poor research infrastructure (20%) and inadequate research funding opportunities (20%) were the major hurdles faced by PGMTs' to pursue research.</p> <p>Conclusion</p> <p>PGMTs' demonstrate inadequate knowledge, while they have moderate attitudes towards health research. Residency training and research facilities at the institution need to undergo major transformation in order to encourage meaningful research by resident trainees.</p
3-(4-ChloroÂphenylÂsulfonÂyl)-5-isopropyl-2-methyl-1-benzofuran
In the title molÂecule, C18H17ClO3S, the 4-chloroÂphenyl ring makes a dihedral angle of 77.03 (5)° with the mean plane of the benzofuran fragment. In the crystal structure, the molÂecules are linked by weak interÂmolecular C—H⋯O hydrogen bonds and C—H⋯π interÂaction
5-Bromo-3-cycloÂpentylÂsulfinyl-2,7-dimethyl-1-benzofuran
In the title compound, C15H17BrO2S, the cycloÂpentyl ring adopts an envelope conformation. In the crystal, molÂecules are linked by weak C—H⋯O hydrogen bonds. A slipped π–π interÂaction occurs between the furan and benzene rings of adjacent molÂecules [centroid–centroid distance = 3.892 (3) Å and slippage = 1.786 (3) Å]. The crystal structure also exhibits a weak C—Br⋯π [2.919 (3) Å] interÂaction
3-(3-ChloroÂphenylÂsulfinÂyl)-2,4,6,7-tetraÂmethyl-1-benzofuran
In the title compound, C18H17ClO2S, the 3-chloroÂphenyl ring makes a dihedral angle of 72.62 (4)° with the mean plane of the benzofuran fragment. In the crystal, molÂecules are linked by weak interÂmolecular C—H⋯O and C—H⋯π interÂactions. The crystal structure also exhibits a slipped π–π interÂaction between the 3-chloroÂphenyl rings of adjacent molÂecules [centroid–centroid distance = 3.751 (2) Å, interÂplanar distance = 3.450 (2) Å and slippage = 1.472 (2) Å]
3-CycloÂhexylÂsulfonyl-2,5-dimethyl-1-benzofuran
In the title compound, C16H20O3S, the cycloÂhexyl ring adopts a chair conformation and the arylÂsulfonyl unit is in the equatorial position. In the crystal, molÂecules are linked through weak interÂmolecular C—H⋯O hydrogen bonds and C—H⋯π interÂactions
5-Fluoro-2-methyl-3-(4-methylÂphenylÂsulfonÂyl)-1-benzofuran
In the title compound, C16H13FO3S, the 4-methylÂphenyl ring makes a dihedral angle of 76.04 (4)° with the mean plane of the benzofuran fragment. In the crystal, molÂecules are linked by weak C—H⋯O hydrogen bonds, and by a slipped π–π interÂaction between the furan and benzene rings of adjacent molÂecules [centroid–centroid distance = 3.780 (2) Å, interÂplanar distance = 3.475 (2) Å and slippage = 1.488 (2) Å]
3-(4-BromoÂphenylÂsulfinÂyl)-2,4,6-trimethyl-1-benzofuran
In the title compound, C17H15BrO2S, the 4-bromoÂphenyl ring makes a dihedral angle of 87.12 (6)° with the mean plane of the benzofuran fragment. In the crystal, molÂecules are linked by weak C—H⋯O and C—H⋯π interÂactions
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