the effect of noise pollution on the environment

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 05/09/2013, 16:10

... and the spectral shape are determined by the concentration ratio of these two components while the PL intensity is determined by the concentrations of these two components and the density of nonradiative ... the concentrations of these two components at the corre- sponding annealing temperature and time. 4.2. The annealing conditions dependence of the red PL Now we can explain the spectral change of the PL from ... their amount. The actual PL is determined by both the concentrations of PL centers and of nonradiative recom- bination centers. This leads to the much strong enhance- ment of PL in the case of...

Ngày tải lên: 16/03/2014, 15:31

Ngày tải lên: 29/03/2014, 21:20

Ngày tải lên: 19/06/2014, 10:20

Ngày tải lên: 19/06/2014, 10:20

Ngày tải lên: 19/06/2014, 10:20

... intervals for the observed performances did allow us to do so. 6 Discussion The presented analysis of the effects of noise in the test corpus on the evaluation of POS taggers leads us to conclude ... better than another using noisy test corpus, there are reasonable chances that they are in fact very similar but one of them is just adapting better than the other to the noise in the corpus. ... extracted from the same corpus, they will prob- ably contain the same kind of errors in the same kind of situations. This may cause the training procedure to learn the errors -especially if they are...

Ngày tải lên: 08/03/2014, 05:21

Ngày tải lên: 29/06/2014, 09:20

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 16:11

... carbon dioxide, sulphur dioxide and other greenhouse gases • carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise. • This leads to disruption of the ... dramatic rise in the human population This increase in population size leads to an increase in pollution and higher demand for the world’s resources This causes several problems 1. Burning the timber ... Burning the timber increases the level of carbon dioxide in the air 2. Less trees means less carbon dioxide absorbed for photosynthesis 3. Soil is eroded as it is exposed to the wind and rain 4....

Ngày tải lên: 28/09/2013, 11:10

... Hai_Trung-Anh strongly, and many buildings and big houses are grown up a lot.Morever, the growth of economy has given a lot of advantages by making people richer, healther, and freer to enjoy their lives.I ... of advantages by making people richer, healther, and freer to enjoy their lives.I always pride of my city whenever I talk about him.I wished that could work at my hometown after finishing at...

Ngày tải lên: 18/01/2014, 07:20

... This leads to disruption of the weather patterns eg drought, floods • Some weeds may thrive on the extra carbon dioxide while other plants are killed Biological Control of Pests • This means ... from the water • This means the fish suffocate and die • This process is called Eutrophication • Raw sewage pumped into rivers has the same effect The Influence of Human Activity on the Environment Benefits ... cars and power stations produces carbon dioxide, sulphur dioxide and other greenhouse gases • carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise. •...

Ngày tải lên: 26/01/2014, 10:20

... performed only on the observations whose propensity score belongs to the intersection of the supports of the propensity score of treated and controls. Imposing the common support condition in the estimation ... wedlock. 2 If the characteristics of the parents and their relationship that determine the risk of union dissolution also affect child wellbeing, then estimates of the effect of separation on child ... between the treated and control groups: β OLS = E[C i (1)|S i = 1] −E[C i (0)|S i = 0]. The ATE is the average of the treatment effect on the treated and the treatment effect on the controls....

Ngày tải lên: 12/02/2014, 11:20

... part of several tens percent of H C and the last one whereas can only reach several hundreds of gauss. Thus, the increasing of Co-concentration led to the increasing of anisotropy property of ... X-ray diffraction study shows the presence of cubic spinel. The increase of Co 2+ ion concentration yields the monotonic increase of M S , H C . Magnetic measurements show the studied system ... temperature.These plots show that an increase in Co 2+ doping yields monotonic increase in the saturation magnetization of Ni- ferrite which may be due to the substitution of Ni 2+ ions by Co 2+ on the...

Ngày tải lên: 13/02/2014, 04:20

... for their attentional content. (3) The specific attentional consequences of each 291 The Effect of Pitch Accenting on Pronoun Referent Resolution Janet Cahn Massachusetts Institute of Technology ... effect is attentional, on the order of items in Cf; (2) the obligation to accent a pronominal for attentional r~asons depends on the variance between what the text predicts and what the speaker ... also consider the way intonation affects the interpretation of a sentence, especially the cases in which it alters the predictions of centering theories. I investigate this via a phenomenon that,...

Ngày tải lên: 20/02/2014, 22:20

... of trifluoroethanol on the conformation of RNase A with particular consideration of the pretransition region of global unfolding. In correspondence to reports by other authors [16,30,31], CD spectra in the near-UV ... the content of secondary structure only after the disruption of the native tertiary structure of RNase A (Figs 2–4). Interestingly, the preservation of the tertiary structure coincides with the ... 5A. Quantification of the proteolytic susceptibility of RNase A. To gain further insight into the changes of the proteolytic susceptibility of RNase A as a function of trifluoroethanol concentration, the...

Ngày tải lên: 22/02/2014, 07:20