components of an ecosystem

... conception and design of the study, the analysis and the drafting and revision of the manu- script. MJ participated in the conception and design of the study and the drafting and revision of the manuscript. ... size of the sample and the nature and number of items as well as having other limitations. IRT can overcome many of the problems of CTT but is more difficult to perform and understand [20] and ... PD and DD contributed to the interpretation of the data and revision of the manuscript. All authors read and approved the final manuscript. Histogram of Ab-PFigure 7 Histogram of Ab-P. Health and...

Ngày tải lên: 18/06/2014, 18:20

... output – Output is in the range of the highest sum and the lowest difference of the two frequencies – Sum and differences are known as the sidebands of the frequency carrier • Shield transmitted signal ... entire frequency for the transmission • For a fraction of time on a fixed, rotating basis – Advantages • Uses the bandwidth more efficiently • Allows both data and voice transmissions to be mixed ... (continued) – Advantages • Can carry up to three times the amount of data as TDMA • Transmissions are much harder to eavesdrop on • A would-be eavesdropper must also know the exact chip in which the transmission...

Ngày tải lên: 13/09/2012, 10:52

... made substantial contributions to conception and design, and to the analysis and interpretation of the data. TRM and GWC handled acquisition of data. All authors contributed to the manuscript ... 41:1845-1850. 26. van Gestel AM, Prevoo ML, van 't Hof MA, van Rijswijk MH, van de Putte LB, van Riel PL: Development and validation of the European League Against Rheumatism response criteria ... Race / Ethnicity Caucasian, not Hispanic 159 (81%) 248(81%) Non-Caucasian Hispanic 7 (4%) 8(3%) Black, not Hispanic 27 (14%) 45(15%) American Indian or Pacific Islander 4 (2%) 4(1%) RA...

Ngày tải lên: 25/10/2012, 10:45

... min after capsule in- gestion. Three analyses of the data were performed using 2 x 2 analysis of variance (ANOVA). For the first data analysis, treatment and time were the independent factors ... tyramine and caffeine. So African Med J. 2008; 98: 372-373. 22. Sander LC, Putzbach K, Nelson BC, et al. Certification of standard reference materials containing bitter orange. Analyt Bioanalyt ... decongestants and is not a constituent of C. aurantium. Because of the known cardiovascular effects of nor-epinephrine and ephedrine, it has generally been assumed that consumption of p-synephrine...

Ngày tải lên: 25/10/2012, 11:10

Ngày tải lên: 06/11/2012, 10:35

Ngày tải lên: 06/11/2012, 10:35

... from frames, tables and other guides, and then produce an essay through answering a set of questions. Minor changes and substitutions of blank space, punctuation marks, and capitalization are ... practice of English Language Teaching, Longman handbooks for language teacher: Longman group, ltd. 15. Heaton, J. B.1989. Writing English test, Longman handbooks for language teacher: Longman group, ... checklists of 10 writing papers at the beginning of the course and the checklist of 10 writing papers at the end of 12 REFERENCES In Vietnamese 1. Canh, Le Van. 2004. Understanding Foreign language...

Ngày tải lên: 06/11/2012, 10:35

... Parents are good so their children can follow Firstly, parents are old and experienced people. They know many things in life and what they know they want their kids can know. Moreover, they work, ... small, their parents can take care of them closely. But when they grow up, they go to school, have friends and teachers, so they can learn from their friend, their teacher and their books, too. ... career preparation. Many learners go to university or college want to get a good job in the future. Therefore they tried to learn most subjects at school meeting the demand of social. The second...

Ngày tải lên: 06/11/2012, 10:35

... Staten Island, and Long Island. Though much smaller than the Costellino family, they operated a lot more efficiently and had ties to one of the biggest crime families out of San Francisco. ... drugs, and the numbers rackets. They operated solely in Manhattan and the Bronx and were looking to expand into Giordano territory. They numbered over two hundred, but were not as efficiently managed ... third stack and extracted an identical number of items from the fourth stack. The stranger had entered the closet as Jack Ferrari and exited it as Tim Goldman. The Heart of an Assassin...

Ngày tải lên: 06/11/2012, 14:13

... discussion) - effect of different tasks on groupwork. Like any kind of praxis, groupwork can lose its meaning if it is handled in an automatic and unthinking way: - The topic is boring or out of students' ... Development and Conclusion. Part 1: Introduction presents the rationale, the method of study, the scope of the study, the subject of the study, the significance of the study and the design of the ... correcting and/or marking at home (rest of time) In Step 1 in early stages the teacher should choose an interesting, easy and simple topic and make sure that all of his/her students understand and...

Ngày tải lên: 07/11/2012, 14:31

... the list of numbers that occur most frequently. Thus, in this set of numbers, there are two modes, which are 6 and 7 Measures of Dispersion: the standard deviation (sd) and the range Range is ... coefficient, N: number of items, X: Mean of all scores, sd: standard deviation of the test) Rt is expressed as a number ranging between 0 and 1.00, with r = 0 revealing no reliability and r = 1.00 indicating ... coefficient (0.53) and low difficulty and discriminability index and is not valid enough with many weak items and unbalanced parts. These shortcomings can be improved through some changes as recommended...

Ngày tải lên: 07/11/2012, 15:05

... no moving transmitter or receiver as in figure 1.1. As can be seen in figure 1.2, multipaths in an indoor environment can come from a wide range of different angles. This can be an advantage because ... collect narrowband angle of arrival data and wideband time of arrival data, but did not collect any data in which the two were measured simultaneously. Wang, et al [14], used a rectangular array ... indoor channel using a multiple antenna system to evaluate antenna diversity performance. Rap- paport and Hawbaker [8] compared the path loss and delay spread performance of several different types of...

Ngày tải lên: 20/11/2012, 11:32

Ngày tải lên: 05/09/2013, 09:08

... zero mean and unit variance (standardized data) in order to avoid misclassifications arising from the different orders of magnitude of both numerical value and variance of the parameters analyzed ... the Kaplan-Meier technique, hierarchical cluster analysis (CA), Kruskal-Wallis and Friedman test. The locations of the groups generated by CA agreed with land and soil use and impact of anthropogenic ... pH and ligands, which can be highly impaired by human activities (Chapman and Wang, 2000; Mendiguchia et al., 2007). Because of spatial and temporal variations in the concentrations of chemical...

Ngày tải lên: 05/09/2013, 10:15

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Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 05/09/2013, 14:59

Ngày tải lên: 05/09/2013, 15:28

Ngày tải lên: 05/09/2013, 15:28