624 research outputs found
A deterministic detector for vector vortex states
Encoding information in high-dimensional degrees of freedom of photons has led to new avenues in various quantum protocols such as communication and information processing. Yet to fully benefit from the increase in dimension requires a deterministic detection system, e.g., to reduce dimension dependent photon loss in quantum key distribution. Recently, there has been a growing interest in using vector vortex modes, spatial modes of light with entangled degrees of freedom, as a basis for encoding information. However, there is at present no method to detect these non-separable states in a deterministic manner, negating the benefit of the larger state space. Here we present a method to deterministically detect single photon states in a four dimensional space spanned by vector vortex modes with entangled polarisation and orbital angular momentum degrees of freedom. We demonstrate our detection system with vector vortex modes from the |[Formula: see text]| = 1 and |[Formula: see text]| = 10 subspaces using classical and weak coherent states and find excellent detection fidelities for both pure and superposition vector states. This work opens the possibility to increase the dimensionality of the state-space used for encoding information while maintaining deterministic detection and will be invaluable for long distance classical and quantum communication
Internal consistency reliability and construct validity of the Attitude toward Muslim Proximity Index (AMPI): a measure of social distance
The Attitude toward Muslim Proximity Index (AMPI) is a six-item scale that uses tolerance to different degrees of social distance to assess prejudice towards Muslims. It was tested on 1777 teenage school children from northern England who indicated their religion as either 'Christian' or 'no religion', and demonstrated good internal reliability (Cronbach's alpha = .81). The index was higher among pupils who supported the views of the British National Party and among those who believed that British Muslims should adopt Western culture; but lower among those who knew Muslims or had Muslim friends. The AMPI is a useful measure of Islamophobic attitudes that does not rely on responses to specific events or on detailed knowledge of the Muslim religion
PENERAPAN SISTEM TANGGAP DARURAT KEBAKARAN DI GEDUNG-GEDUNG UNIVERSITAS
Kebakaran merupakan masalah yang dapat terjadi kapan saja dan menimbulkan korban jiwa serta kerugian harta benda dan dokumen-dokumen penting. Kebakaran dapat terjadi di akibat kelalaian dari manusia maupun akibat dari faktor alam, kasus kebakaran yang dapat terjadi akibat tidak diterapkannya sistem tanggap darurat kebakaran yang efektif dan tidak tersedianya sarana proteksi dalam gedung. Penelitian ini bertujuan untuk mengetahui penerapan sistem tanggap darurat kebakaran di gedung-gedung universitas. Penelitian ini menggunakan metode kualitatif melalui pendekatan observasional untuk mengidentifikasi dan mengevaluasi dengan pengumpulan data secara in-depth interview. Metode pengambilan informan menggunakan teknik Purposive Sampling yaitu informan memiliki kecukupan dan pengetahuan tentang topik penelitian agar dapat memberikan informasi, dan gambaran mengenai sistem tanggap darurat, pengambilan informasi dilakukan dengan wawancara mendalam dengan 6 orang informan yang berada di 4 gedung yang dimasukkan dalam penelitian. Hasil wawancara mendalam dengan 6 informan menunjukan bahwa Lembaga Pendidikan dalam penelitian sudah mengerti tentang sistem tanggap darurat dan sudah mengetahui prosedur tanggap darurat namun belum memperlengkapi sarana proteksi, tim tanggap darurat dan simulasi tanggap darurat belum dilaksanakan disetiap gedung. Tim tanggap darurat di empat gedung tsb belum dibentuk karena dibeberapa gedung kekurangan sumber daya manusia untuk membentuk tim tanggap darurat, dan untuk dokumen sistem tanggap darurat belum tersedia. Hasil observasi langsung didapatkan bahwa dari empat gedung dalam penelitian ini, satu gedung belum mempunyai sarana proteksi aktif, dua gedung belum mempunyai sarana proteksi pasif dan satu gedung yang belum mempunyai sarana penyelamat jiwa. Hasil observasi dokumen ditemukan bahwa sebagian besar gedung tidak memiliki dokumen tanggap darurat yang menjadi patokan dalam melaksanakan dan menangani keadaan darurat. Penerapan sistem tanggap darurat kebakaran dalam Lembaga Pendidikan dalam penelitian ini belum efektif, oleh sebab itu pembentuk tim tanggap darurat dan melengkapi sarana proteksi kebakaran sangat diperlukan sehingga sistem tanggap darurat kebakaran bisa terlaksana dengan baik di setiap gedung. Kata Kunci : Sistem Tanggap Darurat Kebakaran ABSTRACTFire is a problem that can occur at any time, may cause fatalities and loss of property and important documents. Fires can occur as a result of natural factors, human negligence, not implementing an effective fire emergency response system and the unavailability of protective facilities in the building. This study aims to determine the application of fire emergency response systems in university buildings. This study used a qualitative method through an observational approach to identify and data collection through in-depth interviews. The purposive sampling technique was used to recruit the informant. The informant should have sufficient knowledge about the research topic to provide appropriate information and an overview of the emergency response system. In-depth interviews were administrated with six informants who were in four buildings that were included in the study. The results of in-depth interviews with 6 informants showed that the educational institutions in the study already understood the emergency response system and already knew emergency response procedures. However, they had not adequately equipped with protection facilities and no emergency response teams. The emergency response simulations had not been implemented in every building. Emergency response teams in the four buildings have not been formed because some buildings have limited human resources to perform emergency response team tasks. Documents for the emergency response system are not yet available. The results of direct observation showed that of the four buildings in this study, one building did not have active protection facilities, two buildings did not have passive protection facilities, and one did not have life-saving facilities. The result of document observation found that most of the buildings do not have emergency response documents that become a benchmark in implementing and handling emergencies. The implementation of the fire emergency response system in educational institutions in this study has not been effective, therefore forming an emergency response team and completing fire protection facilities is needed so that the fire emergency response system can be implemented properly in every building. Keywords : Fire Emergency Response Syste
Changes in the capacity of visual working memory in 5- to 10-year-olds
Using the Luck and Vogel change detection paradigm, we sought to investigate the capacity of visual working memory in 5-, 7-, and 10-year-olds. We found that performance on the task improved significantly with age and also obtained evidence that the capacity of visual working memory approximately doubles between 5 and 10 years of age, where it reaches adult levels of approximately three to four items
1-Methylcyclopropene treatment efficacy in preventing ethylene perception in banana fruit and grevillea and waxflower flowers
Premature ripening and/or senescence and abscission induced by exposure to ethylene are significant postharvest problems. Banana fruit and grevillea and Geraldton waxflower flowers are among affected commodities. Treatment with 1-methylcyclopropene gas or silver thiosulfate liquid can be used to prevent ethylene perception and response. Treatment of banana fruit with 10 nL 1-methylcyclopropene/L for 12 h at 20˚C afforded protection against subsequent serial treatments over 13 days of subsets with 100 L ethylene/L for 24 h at 20˚C. Protection of Grevillea ‘Sylvia’ inflorescences was effective only for 2 days. Thereafter, fruit and inflorescences regained sensitivity to ethylene. In contrast, neither banana fruit nor grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2˚C were protected against ethylene. 1-Methylcyclopropene binding to ethylene receptors was apparently not achieved at the lower temperature. Increasing the 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5˚C to banana fruit, achieved protection against ethylene. Waxflower sprigs treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20˚C regained full sensitivity to ethylene after about 2 and 4 days, respectively. In contrast, pulsing waxflower with 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20˚C afforded protection against ethylene for the 10 days duration of the experiment
Four-month moxifloxacin-based regimens for drug-sensitive tuberculosis
Supported by the Global Alliance for TB Drug Development with support from the Bill and Melinda Gates Foundation, the European and Developing Countries Clinical Trials Partnership, U.S. Agency for International Development, U.K. Department for International Development, Directorate General for International Cooperation of the Netherlands, Irish Aid, Australia Department of Foreign Affairs and Trade, and National Institutes of Health, AIDS Clinical Trials Group and by grants from the National Institute of Allergy and Infectious Diseases (NIAID) (UM1AI068634, UM1 AI068636, and UM1AI106701) and by NIAID grants to the University of KwaZulu Natal, South Africa, AIDS Clinical Trials Group (ACTG) site 31422 (1U01AI069469); to the Perinatal HIV Research Unit, Chris Hani Baragwanath Hospital, South Africa, ACTG site 12301 (1U01AI069453); and to the Durban International Clinical Trials Unit, South Africa, ACTG site 11201 (1U01AI069426); Bayer Healthcare for the donation of moxifloxacin; and Sanofi for the donation of rifampin.Background: Early-phase and preclinical studies suggest that moxifloxacin-containing regimens could allow for effective 4-month treatment of uncomplicated, smear-positive pulmonary tuberculosis. Methods: We conducted a randomized, double-blind, placebo-controlled, phase 3 trial to test the noninferiority of two moxifloxacin-containing regimens as compared with a control regimen. One group of patients received isoniazid, rifampin, pyrazinamide, and ethambutol for 8 weeks, followed by 18 weeks of isoniazid and rifampin (control group). In the second group, we replaced ethambutol with moxifloxacin for 17 weeks, followed by 9 weeks of placebo (isoniazid group), and in the third group, we replaced isoniazid with moxifloxacin for 17 weeks, followed by 9 weeks of placebo (ethambutol group). The primary end point was treatment failure or relapse within 18 months after randomization. Results: Of the 1931 patients who underwent randomization, in the per-protocol analysis, a favorable outcome was reported in fewer patients in the isoniazid group (85%) and the ethambutol group (80%) than in the control group (92%), for a difference favoring the control group of 6.1 percentage points (97.5% confidence interval [CI], 1.7 to 10.5) versus the isoniazid group and 11.4 percentage points (97.5% CI, 6.7 to 16.1) versus the ethambutol group. Results were consistent in the modified intention-to-treat analysis and all sensitivity analyses. The hazard ratios for the time to culture negativity in both solid and liquid mediums for the isoniazid and ethambutol groups, as compared with the control group, ranged from 1.17 to 1.25, indicating a shorter duration, with the lower bounds of the 95% confidence intervals exceeding 1.00 in all cases. There was no significant difference in the incidence of grade 3 or 4 adverse events, with events reported in 127 patients (19%) in the isoniazid group, 111 (17%) in the ethambutol group, and 123 (19%) in the control group. Conclusions: The two moxifloxacin-containing regimens produced a more rapid initial decline in bacterial load, as compared with the control group. However, noninferiority for these regimens was not shown, which indicates that shortening treatment to 4 months was not effective in this setting. (Funded by the Global Alliance for TB Drug Development and others; REMoxTB ClinicalTrials.gov number, NCT00864383.)Publisher PDFPeer reviewe
Saving Lives – an epic quest to promote an evidence-based approach for preventing healthcare-associated infections in the National Health Service in England
Since its inception more than half a century ago, the National Health Service has continued to transform and improve the health and wellbeing of the Nation. Now treating a million people every 36 hours, the NHS provides an unprecedented range of clinical interventions that can mend accidental damage, prevent, identify and manage or cure disease, and prolong quality life. However, hospital care and healthcare interventions are always associated with potential hazards, including the risk of acquiring an infection during care. Those patients most at risk are often the most vulnerable and chronically ill in our society and they and their families suffer needlessly because healthcare-associated infections are largely preventable. During the last decade, the Richard Wells Research Centre (RWR) in the Faculty of Health and Human Sciences at University of West London (formally Thames Valley university) has collaborated with the Department of Health and a variety of other governmental organisations and professional societies to develop an evidence-based approach to preventing healthcare-associated infections. This article describes the impact of our work and our journey in partnerships to support sustainable improvements in patient care, enhance patient safety and ultimately save lives
IReport: A generalised Galaxy solution for integrated experimental reporting
Background: Galaxy offers a number of visualisation options with components, such as Trackster, Circster and Galaxy Charts, but currently lacks the ability to easily combine outputs from different tools into a single view or report. A number of tools produce HTML reports as output in order to combine the various output files from a single tool; however, this requires programming and knowledge of HTML, and the reports must be custom-made for each new tool.Findings: We have developed a generic and flexible reporting tool for Galaxy, iReport, that allows users to create interactive HTML reports directly from the Galaxy UI, with the ability to combine an arbitrary number of outputs from any number of different tools. Content can be organised into different tabs, and interactivity can be added to components. To demonstrate the capability of iReport we provide two publically available examples, the first is an iReport explaining about iReports, created for, and using content from the recent Galaxy Community Conference 2014. The second is a genetic report based on a trio analysis to determine candidate pathogenic variants which uses our previously developed Galaxy toolset for whole-genome NGS analysis, CGtag. These reports may be adapted for outputs from any sequencing platform and any results, such as omics data, non-high throughput results and clinical variables.Conclusions: iReport provides a secure, collaborative, and flexible web-based reporting system that is compatible with Galaxy (and non-Galaxy) generated content. We demonstrate its value with a real-life example of reporting genetic trio-analysis
Australia : no price on cutting fire risk
No abstract available.http://www.nature.com/nature/index.htmlab201
Quantum Fields in a Big Crunch/Big Bang Spacetime
We consider quantum field theory on a spacetime representing the Big
Crunch/Big Bang transition postulated in the ekpyrotic or cyclic cosmologies.
We show via several independent methods that an essentially unique matching
rule holds connecting the incoming state, in which a single extra dimension
shrinks to zero, to the outgoing state in which it re-expands at the same rate.
For free fields in our construction there is no particle production from the
incoming adiabatic vacuum. When interactions are included the total particle
production for fixed external momentum is finite at tree level. We discuss a
formal correspondence between our construction and quantum field theory on de
Sitter spacetime.Comment: 30 pages, RevTex file, five postscript figure file
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