351 research outputs found

    Mapping the Harmonious Society and CSR Link1

    Get PDF
    Harmonious Society was proposed by Chinese President Hu Jintao as early as 2005 as the Chinese approach towards development. This generated significant excitement among observers of Corporate Social Responsibility (CSR) who see CSR and Harmonious Society as sharing common objectives. This paper seeks to explore whether Harmonious Society will result in an increase in CSR engagement by Chinese firms. It does so by drawing up a list of actions that if taken by the government would increase the level of CSR in China and make Harmonious Society a relevant factor in the development of Chinese CSR. To do so, my paper develops a framework for studying the elements that affect the level of CSR by dividing causes of CSR into a societal ā€œdemandā€ side and a discretionary supply side. Understanding what drives the development of CSR allows us to understand what measures governments can take to influence the level of CSR through these elements. Using this framework, my paper also finds that CSR in China in the near future will be largely concentrated in SOE and is unlikely to be widespread in the growing private-sector of China

    The EM Algorithm

    Get PDF
    The Expectation-Maximization (EM) algorithm is a broadly applicable approach to the iterative computation of maximum likelihood (ML) estimates, useful in a variety of incomplete-data problems. Maximum likelihood estimation and likelihood-based inference are of central importance in statistical theory and data analysis. Maximum likelihood estimation is a general-purpose method with attractive properties. It is the most-often used estimation technique in the frequentist framework; it is also relevant in the Bayesian framework (Chapter III.11). Often Bayesian solutions are justified with the help of likelihoods and maximum likelihood estimates (MLE), and Bayesian solutions are similar to penalized likelihood estimates. Maximum likelihood estimation is an ubiquitous technique and is used extensively in every area where statistical techniques are used. --

    Input parameters selection for soil moisture retrieval using an artificial neural network

    Get PDF
    Factors other than soil moisture which influence the intensity of microwave emission from the soil include surface temperature, surface roughness, vegetation cover and soil texture which make this a non-linear and ill-posed problem. Artificial Neural Networks (ANNs) have been demonstrated to be good solutions to this type of problem. Since an ANN is a data driven model, proper input selection is a crucial step in its implementation as the presence of redundant or unnecessary inputs can severely impair the ability of the network to learn the target patterns. In this paper, the input parameters are chosen in combination with the brightness temperatures and are based on the use of incremental contributions of the variables towards soil moisture retrieval. Field experiment data obtained during the National Airborne Field Experiment 2005 (NAFE'05) are used. The retrieval accuracy with the input parameters selected is compared with the use of only brightness temperature as input and the use of brightness temperature in conjunction with a range of available parameters. Note that this research does not aim at selecting the best features for all ANN soil moisture retrieval problems using passive microwave. The paper shows that, depending on the problem and the nature of the data, some of the data available are redundant as the input of ANN for soil moisture retrieval. Importantly the results show that with the appropriate choice of inputs, the soil moisture retrieval accuracy of ANN can be significantly improved

    A Study on the Analytical Sensitivity of 6 BSE Tests Used by the Canadian BSE Reference Laboratory

    Get PDF
    Bovine spongiform encephalopathy (BSE) surveillance programs have been employed in numerous countries to monitor BSE prevalence and to protect animal and human health. Since 1999, the European Commission (EC) authorized the evaluation and approval of 20 molecular based tests for the rapid detection of the pathological prion protein (PrPsc) in BSE infection. The diagnostic sensitivity, convenience, and speed of these tests have made molecular diagnostics the preferred method for BSE surveillance. The aim of this study was to determine the analytical sensitivity of 4 commercially available BSE rapid-test kits, including the PrionicsĀ®-Check WESTERN, the PrionicsĀ® Check-PrioSTRIPā„¢, the BioRadĀ® TeSeEā„¢ ELISA, and the IDEXXĀ® HerdChekā„¢ EIA. Performances of these tests were then compared to 2 confirmatory tests, including the BioRadĀ® TeSeEā„¢ Western Blot and the modified Scrapie Associated Fibrils (SAF)/OIE Immunoblot. One 50% w/v homogenate was made from experimentally generated C-type BSE brain tissues in ddH2O. Homogenates were diluted through a background of BSE-negative brainstem homogenate. Masses of both positive and negative tissues in each dilution were calculated to maintain the appropriate tissue amounts for each test platform. Specific concentrated homogenization buffer was added accordingly to maintain the correct buffer condition for each test. ELISA-based tests were evaluated using their respective software/detection platforms. Blot-protocols were evaluated by manual measurements of blot signal density. Detection limitations were determined by fitted curves intersecting the manufacturers' positive/negative criteria. The confirmatory SAF Immunoblot displayed the highest analytical sensitivity, followed by the IDEXXĀ® HerdChekā„¢ EIA, Bio-RadĀ® TeSeEā„¢ Western Blot, the Bio-RadĀ® TeSeEā„¢ ELISA, PrionicsĀ®-Check PrioSTRIPā„¢, and PrionicsĀ®-Check WESTERNā„¢, respectively. Although the tests performed at different levels of sensitivity, the most sensitive and least sensitive of the rapid tests were separated by 2 logs in analytical sensitivity, meeting European performance requirements. All rapid tests appear suitable for targeted BSE surveillance programs, as implemented in Canada

    Historical ā€˜signpostsā€™ and other temporal indicators in the Czech lexicon

    Get PDF
    This article posits that the Czechs employ a great many historical markers, previously applied to other events of national importance, which help to shape collective memory and right the ā€˜wrongsā€™ of the past. It is argued that these temporal indicators share a number of clearly defined characteristics, and that their use is too systematic and calculated to be merely a function of the constraints of the lexicon. The first part of the study considers in detail questions of semantics (especially the distinction between denotation and connotation), the lexicographical sources available to the researcher, and the lexical ā€˜signpostā€™ in context, while the second part focuses on practical examples of lexical re-appropriation since 1918, with particular reference to dictionaries and the Czech National Corpus.University of Wolverhampto
    • ā€¦
    corecore