582 research outputs found

    A bayesian approach in multiple regression analysis with inequality constraints

    Get PDF

    Bayesian analysis in linear regression with different priors

    Get PDF

    Policy Brief: Bridging the Gender Pay Gap

    Get PDF
    Gender pay gap (GPG) is a complex issue that various forums, including the G20, have attempted to discuss. Mitigating GPG requires large-scale transformative changes, but constraints on financial resources and public spending, along with cultural norms and deep-seated societal beliefs, make it a difficult task. Proposed actions, therefore, must be economically prudent and actionable. This Policy Brief offers five recommendations for the G20 to help bridge the gender pay gap. These include: introducing pay transparency legislation; mandating data-driven gender budgeting; increasing emphasis on parental leave; promoting women in STEM subjects; and engaging with the industry by proposing initiatives such as exclusive women only portals, reporting on gender, facilitating leadership programmes, and ‘de-biasing’ organisations. These proposals can help policymakers move the needle on gender equity, promote social justice, and improve economic outcomes

    Bayesian analysis of heteroscedasticity in regression models

    Get PDF

    Impact of Community-led Total Sanitation on Women’s Health in Urban Slums: A Case Study from Kalyani Municipality

    Get PDF
    This Evidence Report seeks to understand the health and other impacts of slum women’s access to sanitation through the Community-led Total Sanitation (CLTS) approach. It also examines the process through which open defecation free (ODF) status was attained in two different slum colonies, the resulting health impacts and the collective action that took place around both sanitation and other development benefits. The study was conducted in the slums of Kalyani, a Municipality town located 55km north of Kolkata, the capital city of West Bengal state in India. From an area plagued with rampant open defecation, the slums of Kalyani were transformed into the first ODF town in India in 2009. This was achieved through the CLTS model that focused on motivating the community to undertake collective behaviour change to achieve ‘total’ sanitation and an ODF environment. This was in sharp contrast to earlier, top-down approaches to the provision of toilets, which had failed to ensure ownership or usage by the community. The benefits of CLTS to the community were not limited to changed sanitation behaviour and an end of open defecation – there were significant development and health gains beyond sanitation. Women’s health in this study has been viewed not just in terms of the presence or absence of disease burden on the physical health of women but also in terms of their socio-psychological wellbeing resulting from reduced risks and a wide range of benefits accruing from better sanitation and hygiene practices and facilities. The study also focused on exploring the extent to which the CLTS process can be said to have empowered women. As experiences of good health and wellbeing are affected by factors in the external environment, namely the role of the local government, women’s access to health services and the involvement of multiple sectors, these issues were also considered, in order to understand the overall health status and experiences of women in Kalyani slums.UK Department for International Developmen

    Emission from the D1D5 CFT

    Full text link
    It is believed that the D1D5 brane system is described by an 'orbifold CFT' at a special point in moduli space. We first develop a general formulation relating amplitudes in a d-dimensional CFT to absorption/emission of quanta from flat infinity. We then construct the D1D5 vertex operators for minimally coupled scalars in supergravity, and use these to compute the CFT amplitude for emission from a state carrying a single excitation. Using spectral flow we relate this process to one where we have emission from a highly excited initial state. In each case the radiation rate is found to agree with the radiation found in the gravity dual.Comment: 49 pages, latex, 6 figures; v2: reformatted for JHEP, corrected typos, and added reference

    Search for Short-Term Periodicities in the Sun's Surface Rotation: A Revisit

    Full text link
    The power spectral analyses of the Sun's surface equatorial rotation rate determined from the Mt. Wilson daily Doppler velocity measurements during the period 3 December 1985 to 5 March 2007 suggests the existence of 7.6 year, 2.8 year, 1.47 year, 245 day, 182 day and 158 day periodicities in the surface equatorial rotation rate during the period before 1996. However, there is no variation of any kind in the more accurately measured data during the period after 1995. That is, the aforementioned periodicities in the data during the period before the year 1996 may be artifacts of the uncertainties of those data due to the frequent changes in the instrumentation of the Mt. Wilson spectrograph. On the other hand, the temporal behavior of most of the activity phenomena during cycles 22 (1986-1996) and 23 (after 1997) is considerably different. Therefore, the presence of the aforementioned short-term periodicities during the last cycle and absence of them in the current cycle may, in principle, be real temporal behavior of the solar rotation during these cycles.Comment: 11 pages, 6 figures, accepted for publication in Solar Physic

    Implementation and first results of the KM3NeT real-time core-collapse supernova neutrino search

    Get PDF
    The KM3NeT research infrastructure is unconstruction in the Mediterranean Sea. KM3NeT will study atmospheric and astrophysical neutrinos with two multi-purpose neutrino detectors, ARCA and ORCA, primarily aimed at GeV–PeV neutrinos. Thanks to the multi-photomultiplier tube design of the digital optical modules, KM3NeT is capable of detecting the neutrino burst from a Galactic or near-Galactic core-collapse supernova. This potential is already exploitable with the first detection units deployed in the sea. This paper describes the real-time implementation of the supernova neutrino search, operating on the two KM3NeT detectors since the first months of 2019. A quasi-online astronomy analysis is introduced to study the time profile of the detected neutrinos for especially significant events. The mechanism of generation and distribution of alerts, as well as the integration into the SNEWS and SNEWS 2.0 global alert systems, are described. The approach for the follow-up of external alerts with a search for a neutrino excess in the archival data is defined. Finally, an overview of the current detector capabilities and a report after the first two years of operation are given.Acknowledgements The authors acknowledge the financial support of the funding agencies: Agence Nationale de la Recherche (contract ANR-15-CE31-0020), Centre National de la Recherche Scientifique (CNRS), Commission Européenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), LabEx UnivEarthS (ANR-10-LABX-0023 and ANR-18-IDEX-0001), Paris Île-de-France Region, France; Shota Rustaveli National Science Foundation of Georgia (SRNSFG, FR-18-1268), Georgia; Deutsche Forschungsgemeinschaft (DFG), Germany; The General Secretariat of Research and Technology (GSRT), Greece; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell’Università e della Ricerca (MIUR), PRIN 2017 program (Grant NAT-NET 2017W4HA7S) Italy; Ministry of Higher Education Scientific Research and Professional Training, ICTP through Grant AF-13, Morocco; Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; The National Science Centre, Poland (2015/18/E/ST2/00758); National Authority for Scientific Research (ANCS), Romania; Ministerio de Ciencia, Innovación, Investigación y Universidades (MCIU): Programa Estatal de Generación de Conocimiento (refs. PGC2018-096663-B-C41, -A-C42, -B-C43, -B-C44) (MCIU/FEDER), Generalitat Valenciana: Prometeo (PROMETEO/2020/019), Grisolía (ref. GRISOLIA/2018/119) and GenT (refs. CIDEGENT/2018/034, /2019/043, /2020/049) programs, Junta de Andalucía (ref. A-FQM-053-UGR18), La Caixa Foundation (ref. LCF/BQ/IN17/11620019), EU: MSC program (ref. 101025085), Spain

    Letter of interest for a neutrino beam from Protvino to KM3NeT/ORCA

    Get PDF
    The Protvino accelerator facility located in the Moscow region, Russia, is in a good position to offer a rich experimental research program in the field of neutrino physics. Of particular interest is the possibility to direct a neutrino beam from Protvino towards the KM3NeT/ORCA detector, which is currently under construction in the Mediterranean Sea 40 km offshore Toulon, France. This proposal is known as P2O. Thanks to its baseline of 2595 km, this experiment would yield an unparalleled sensitivity to matter effects in the Earth, allowing for the determination of the neutrino mass ordering with a high level of certainty after only a few years of running at a modest beam intensity of ≈ 90 kW. With a prolonged exposure (≈1500 kWyear), a 2σ sensitivity to the leptonic CP-violating Dirac phase can be achieved. A second stage of the experiment, comprising a further intensity upgrade of the accelerator complex and a densified version of the ORCA detector (Super-ORCA), would allow for up to a 6σ sensitivity to CP violation and a 10º−17º resolution on the CP phase after 10 years of running with a 450 kW beam, competitive with other planned experiments. The initial composition and energy spectrum of the neutrino beam would need to be monitored by a near detector, to be constructed several hundred meters downstream from the proton beam target. The same neutrino beam and near detector set-up would also allow for neutrino-nucleus cross section measurements to be performed. A short-baseline sterile neutrino search experiment would also be possible
    • …
    corecore