358 research outputs found
Mapping the Harmonious Society and CSR Link1
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 ādemandā 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
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
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
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 āsignpostsā and other temporal indicators in the Czech lexicon
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 āwrongsā 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 āsignpostā 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
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