secondary research是和primary research对应的。secondary research的data/information/evidence来源是existing ...
而一旦涉及到文献的真实性，the nest target of suspicion便是 the whole paper。其次，如果对真实性没...
Source TypeExampleHow to Identify Primary Diaries, original research, interviews Created by someone directly involved in the events or firsthand accounts; close in time to the events. Secondary Textbooks, reviews, analyses Provides interpretation, critique, or analysis of primary sources; created after...
The paper takes one private vocational college as an example to study the current situation,problems and shortcomings of the traditional educational administration mode.Meanwhile,this paper also researches into the new 'school-department' secondary educational administration system.Through the study and anal...
Although primary sources are more reliable and authoritative, secondary sources are just as essential to scientific and educational communities. Not everyone has access to primary sources, and even if they do, they might not be able to make sense of them (for example, if the source is written...
A more complex example is Sigmund Freud’s Three Essays on the Theory of Sexuality, which drew in part from his analysis of Sophocles’ tragedy Oedipus Rex. In an analytic paper on Oedipus Rex, Freud’s book could serve as a secondary source. In an analysis that considers Freudian theory,...
Some mathematical statements can be validated by a supportive example or refuted by a counterexample. Our study investigated secondary school teachers' knowledge of such proofs. Fifty practising secondary school teachers were first asked to validate/refute six elementary number theory statements, then to...
This should be a future research focus. 5. Conclusions Starting from the basic control methods of multi-parallel inverter microgrid systems, this paper analyses the problem of the centralized, decentralized, and distributed secondary regulation of frequency and voltage in multiple inverter microgrid ...
Example of triterpene. One group of compounds showing a range of interesting biological activity is the quassinoids isolated fromQuassia amara. These are degradation and rearrangement products of triterpenes. Quassia is used as a bitter tonic, as an insecticide and as an ...
For example, W. Africa refers to West Africa in Poorter et al. and N’Guessan et al. This region is not in Central Africa but represents the closest region that could be found containing such information. Uncertainty types are either the 95% confidence interval or the minimum and maximum ...