20 research outputs found
An Assessment of user preference in artificial pathway lighting in urban parks; Cases from Greater Colombo region
No full textUrban parks are critical in converting cities to liveable spaces, where artificial lighting directly affects the users’ night-time experience. This study explores the urban park users’ preferences in artificial pathway lighting, through their subjective responses towards Brightness, Correlated Colour Temperature (CCT), and luminaires of the existing lighting design, at four popular urban parks in Colombo. The reasons for the said preferences were investigated under three overarching themes: perceived safety, perceived quality of light, and restorative experience. A mixed methods approach was employed for data collection, where questionnaires were used together with measurements, in-situ observations, and photographic analysis for better understanding. The user preferences were found to be directly associated with their perception of the lit environment. The existing brightness levels are insufficient for majority of the users and has affected their perception of safety. The poor selection and placement of luminaires have negatively affected the lighting quality, while the positive effect on the users’ restorative experience has induced a higher preference towards the CCT of the light sources. The results revealed that the majority of the users opted for changes in the current lighting design, indicating that the user needs and requirements are not effectively addressed in this regard
An Assessment of User Preferences on Artificial Pathway Lighting in Urban Parks with Special Reference to the Greater Colombo Region
No full textBeing a globally immerging concept, urban parks play a critical role in converting cities to liveable spaces, where artificial lighting directly affects the users’ night-time experience. Therefore, addressing user needs and preferences helps achieve a successful lighting design. This study was conducted at four popular urban parks in Colombo: Viharamahadevi Park, Independence Square, Urban Wetland Park and Diyatha Uyana, where the urban park users’ subjective responses towards three lighting parameters: brightness, Correlated Colour Temperature (CCT), and luminaires of the existing pathway lighting design, selected based on the appropriateness in terms of pathway lighting, and the practicality of assessing them within the chosen urban parks, were evaluated. The reasons for the said preferences were investigated under three overarching themes: perceived safety, perceived quality of light, and restorative experience. Data collection was done through a mixed methods approach under two main steps, namely the literature review survey and the case study survey. A sample of 10 participants (5 males and 5 females) were selected at each location through convenience sampling. Questionnaires were given to the users to rate their preference towards the existing pathway lighting conditions on a scale from 1 (very unsatisfied) to 5 (very satisfied). The user responses were analysed together with existing brightness levels measured using a digital lux meter, in-situ observations and photographic analysis of user behavioural patterns at case study locations, so as to further strengthen the outcomes. Aligned with literature, the user preferences were found to be directly associated with their perception of the lit environment. The results revealed that the majority of the users opted for change in the current lighting design, although they were both negatively and positively affected by it, indicating that the user needs and requirements are not effectively addressed in this regard.
Keywords: User preference, Artificial lighting, Pathway lighting, Urban park
Malaria and Primary Education : A Cross-Country Analysis on Primary Repetition and Completion Rates
No full textThis paper explores the link between P. Falciparum malaria - most of malaria morbidity and mortality is due to the malignant Plasmodium Falciparum - and primary education in terms of school performances at the macroeconomic stage. Cross-country regression analysis shows that the relation between school results (measured by repetition and completion rates) and the P. Falciparum malaria index is strong. The results implies that the achievement of the education Millennium Development Goals will require more than just focusing on expenditure in primary education. It does not imply that resources in education are unnecessary but that increasing resources in education and improving education resources management alone are unlikely to be sufficient. This paper suggests that health conditions and especially diseases that alter cognitive capacities of children such as malaria should be taken into account much more seriously. This study also sees the need to place emphasis on research that will improve the quality of interventions to prevent malaria. Specific education expenditure to face Malaria should be examined in addition to health policies.Malaria incidence, human capital, development.
Author Correction: Identification of genetic effects underlying type 2 diabetes in South Asian and European populations
No full textAuthor Correction to: Identification of genetic effects underlying type 2 diabetes in South Asian and European population
Author Correction: The power of genetic diversity in genome-wide association studies of lipids (Nature, (2021), 600, 7890, (675-679), 10.1038/s41586-021-04064-3)
No full textCorrection to: Nature Published online 9 December 2021 In the version of this article initially published, Noha A. Yousri (Department of Genetic Medicine, Weill Cornell Medicine-Qatar, Doha, Qatar and Department of Computer and Systems Engineering, Alexandria University, Egypt) and Steven C. Hunt (Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA and Department of Genetic Medicine, Weill Cornell Medicine-Qatar, Doha, Qatar) were not included in the author list. In addition, Hieab H. H. Adams (Department of Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands and Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands) was shown with an incorrect second affiliation in the HTML and PDF versions of the article. Finally, in the HTML version, Cristen J. Willer was mistakenly listed with an extra affiliation (Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), King Abdulaziz University, Jeddah, Saudi Arabia). The authors and affiliations have been corrected in the HTML and PDF versions of the article. © 2023, The Author(s), under exclusive licence to Springer Nature Limited
A new investigation of electron neutrino appearance oscillations with improved sensitivity in the MiniBooNE+ experiment
No full textSubmitted as whitepaper for Snowmass'13 proceedings - 8 pages, 3 figures; version 2: Minor change to title and author listSubmitted as whitepaper for Snowmass'13 proceedings - 8 pages, 3 figures; version 2: Minor change to title and author listWe propose the addition of scintillator to the existing MiniBooNE detector to allow a test of the neutral-current/charged-current (NC/CC) nature of the MiniBooNE low-energy excess. Scintillator will enable the reconstruction of 2.2 MeV s from neutron-capture on protons following neutrino interactions. Low-energy CC interactions where the oscillation excess is observed should have associated neutrons with less than a 10% probability. This is in contrast to the NC backgrounds that should have associated neutrons in approximately 50% of events. We will measure these neutron fractions with CC and NC events to eliminate that systematic uncertainty. This neutron-fraction measurement requires protons on target delivered to MiniBooNE with scintillator added in order to increase the significance of an oscillation excess to over . This new phase of MiniBooNE will also enable additional important studies such as the spin structure of nucleon () via NC elastic scattering, a low-energy measurement of the neutrino flux via \numu ^{12}C \rightarrow \mu^{-} ^{12}N_\textrm{g.s.} scattering, and a test of the quasielastic assumption in neutrino energy reconstruction. These topics will yield important, highly-cited results over the next 5 years for a modest cost, and will help to train Ph.D. students and postdocs. This enterprise offers complementary information to that from the upcoming liquid Argon based MicroBooNE experiment. In addition, MicroBooNE is scheduled to receive neutrinos in early 2014, and there is minimal additional cost to also deliver beam to MiniBooNE
Author Correction: The power of genetic diversity in genome-wide association studies of lipids
No full textCorrection to "The power of genetic diversity in genome-wide association studies of lipids
Two-particle correlations in azimuthal angle and pseudorapidity in inelastic p + p interactions at the CERN Super Proton Synchrotron
No full textResults on two-particle Δ ηΔ ϕ correlations in inelastic p + p interactions at 20, 31, 40, 80, and 158 GeV/c are presented. The measurements were performed using the large acceptance NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. The data show structures which can be attributed mainly to effects of resonance decays, momentum conservation, and quantum statistics. The results are compared with the Epos and UrQMD models. © 2017, The Author(s)
Erratum: Author Correction: Identification of genetic effects underlying type 2 diabetes in South Asian and European populations (Communications biology (2022) 5 1 (329)).
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