2,469,329 research outputs found
Updating the Input Output based Macmod functions
The present paper reports on a statistical effort undertaken for the Macmod project. It reports on the revision and updating of the Tanzanian Input-Output table for 1992. These IO activities are undertaken in order to furnish the Macmod model with production and consumption functions that are up-to-date, commodity specific with respect to inputs, and explicit in respect of the input origin.Input Output tables Statistical analysis Tanzania
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3-5-man mutual zugzwangs in chess
This note reports the work of Wirth and Karrer in twin-sourcing all mutual zugzwang positions, mzugs, in 2-5-man endgames. This paper tabulates the mzug statistical data, gives examples of maximal mzugs and refers to a chess endgame website where further data is to be found
A Survey of Church Libraries
This article reports the results of a survey of congregational libraries, documents the current state of congregational libraries, and updates previous statistical studies. A survey was conducted to collect demographic statistics, information on collection size and composition, budgets and acquisitions methods, staffing characteristics, automation, and circulation
Population scale data reveals the antidepressant effects of ketamine and other therapeutics approved for non-psychiatric indications.
Current therapeutic approaches to depression fail for millions of patients due to lag in clinical response and non-adherence. Here we provide new support for the antidepressant effect of an anesthetic drug, ketamine, by Inverse-Frequency Analysis of eight million reports from the FDA Adverse Effect Reporting System. The results of the examination of population scale data revealed that patients who received ketamine had significantly lower frequency of reports of depression than patients who took any other combination of drugs for pain. The analysis also revealed that patients who took ketamine had significantly lower frequency of reports of pain and opioid induced side effects, implying ketamine's potential to act as a beneficial adjunct agent in pain management pharmacotherapy. Further, the Inverse-Frequency Analysis methodology provides robust statistical support for the antidepressant action of other currently approved therapeutics including diclofenac and minocycline
Robust nonparametric detection of objects in noisy images
We propose a novel statistical hypothesis testing method for detection of
objects in noisy images. The method uses results from percolation theory and
random graph theory. We present an algorithm that allows to detect objects of
unknown shapes in the presence of nonparametric noise of unknown level and of
unknown distribution. No boundary shape constraints are imposed on the object,
only a weak bulk condition for the object's interior is required. The algorithm
has linear complexity and exponential accuracy and is appropriate for real-time
systems. In this paper, we develop further the mathematical formalism of our
method and explore important connections to the mathematical theory of
percolation and statistical physics. We prove results on consistency and
algorithmic complexity of our testing procedure. In addition, we address not
only an asymptotic behavior of the method, but also a finite sample performance
of our test.Comment: This paper initially appeared in 2010 as EURANDOM Report 2010-049.
Link to the abstract at EURANDOM repository:
http://www.eurandom.tue.nl/reports/2010/049-abstract.pdf Link to the paper at
EURANDOM repository: http://www.eurandom.tue.nl/reports/2010/049-report.pd
A First Exposure to Statistical Mechanics for Life Scientists
Statistical mechanics is one of the most powerful and elegant tools in the
quantitative sciences. One key virtue of statistical mechanics is that it is
designed to examine large systems with many interacting degrees of freedom,
providing a clue that it might have some bearing on the analysis of the
molecules of living matter. As a result of data on biological systems becoming
increasingly quantitative, there is a concomitant demand that the models set
forth to describe biological systems be themselves quantitative. We describe
how statistical mechanics is part of the quantitative toolkit that is needed to
respond to such data. The power of statistical mechanics is not limited to
traditional physical and chemical problems and there are a host of interesting
ways in which these ideas can be applied in biology. This article reports on
our efforts to teach statistical mechanics to life science students and
provides a framework for others interested in bringing these tools to a
nontraditional audience in the life sciences.Comment: 27 pages, 16 figures. Submitted to American Journal of Physic
Towards using web-crawled data for domain adaptation in statistical machine translation
This paper reports on the ongoing work focused on domain adaptation of statistical machine translation using domain-specific data obtained by domain-focused web crawling. We present a strategy for crawling monolingual and parallel data and their exploitation for testing, language modelling, and system tuning in a phrase--based machine translation framework. The proposed approach is evaluated on the domains of Natural Environment and Labour Legislation and two language
pairs: English–French and English–Greek
Agent-based Model Construction in Financial Economic System
The paper gives picture of enrichment to economic and financial system analysis using agent-based models as a form of advanced study for financial economic post-statistical-data and micro-simulation analysis. The paper reports the construction of artificial stock market that emerges the similar statistical facts with real data in Indonesian stock market. We use the individual but dominant data, i.e.: PT TELKOM in hourly interval. The artificial stock market shows standard statistical facts, e.g.: volatility clustering, the excess kurtosis of the distribution of return, and the scaling properties with its breakdown in the crossover of Levy distribution to the Gaussian one. From this point, the artificial stock market will always be evaluated in order to have comprehension about market process in Indonesian stock market generally
Impact of corporate social responsibility disclosures on financial performance
The purpose of this study is to explore the impact of corporate social responsibility (CSR) disclosure on the financial performance of industrial companies operating in Australia. The study adopts a quantitative methodological approach. Using a statistical analysis technique, the study makes use of regression analysis to explore the relation between the independent variable (number of CSR achievements) and the dependent variable (average share price). The number of CSR achievements was extracted from annual reports using content analysis. The average share price was taken from the annual reports. The total sample is 10 industrial companies listed in Australian Stock Exchange (ASX), and the sample comprises 50 annual reports. The result of the analysis shows that overall there is positive relationship between CSR disclosure and the financial performance of listed Australian companies operating in the industrial sector of the economy. It is recommended that these companies pay more attention to their CSR disclosure, and view it to achieve better financial performance
The role of regional surveillance networks in enhancing global outbreak reporting
BACKGROUND: The Program for Monitoring Emerging Diseases (ProMED) is a moderated electronic reporting system dedicated to the rapid, global dissemination of outbreak reports. Its moderators are globally diverse, carefully selected, highly trained specialists. To improve cross-border communication and rapidly identify regional health threats, ProMED created regional networks where locally-based moderators use their access to local and regional medical and public health networks and media sources to obtain information not readily available outside of their region. In this analysis, we assess the impact of the establishment of ProMED's Middle East/North Africa (MENA) and South Asia (SoAs) regional networks in April 2014 on ProMED's outbreak reports for these regions.
METHODS & MATERIALS: Outbreak reports in countries within the two regions were extracted from ProMED's database, and included country, disease name, species type, spatial coordinates, and report issue date. Data analysis included visualizing spatial information, identifying unique reports, and reporting trends per country and region. Data processing and analysis were conducted using R 3.4.0 statistical software. Rates of outbreak events per total number of ProMED reports per year were calculated to adjust for temporal trends in the total number of reports posted on ProMED. Rate comparison used a two-sided t-test; P < 0.05 was considered statistically significant.
RESULTS: The mean monthly incidence of ProMED reports concerning outbreaks in the MENA region increased from 28 reports (May 2012 - April 2014) to 83 reports after the establishment of the networks (May 2014 - April 2016), and from 29 reports to 101 reports concerning outbreaks in the SoAs region over the same time period. The number of reports per total number of ProMED reports increased by 259% for MENA, and 289% for SoAs (P < 0.01). MENA reports most often addressed MERS (32.3%), foot-and-mouth disease (7.0%), avian influenza (6.7%), and measles (3.8%); whereas SoAs most often addressed dengue (14.9%), anthrax (7.3%), Japanese encephalitis (7.0%), CCHF (4.9%), and rabies (4.8%).
CONCLUSION: The establishment of MENA and SoAs regional networks with locally-based, expert moderators resulted in a significant increase in ProMED's outbreak reports from these regions and an increased flow of disease information across regional borders and to the global public health community
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