Case studies involve a particular method of research. Rather than using large samples and following a rigid protocol to examine a limited number of variables, case study methods involve an in-depth, longitudinal examination of a single instance or event: a case. They provide a systematic way of looking at events, collecting data, analyzing information, and reporting the results. As a result the researcher may gain a sharpened understanding of why the instance happened as it did, and what might become important to look at more extensively in future research.

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Note added at 16 mins (2005-05-25 13:59:52 GMT)
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Reference: Your note above

AnusandhAn is a set word for research and it is easily understood by one and all. However, you may also consider

Shodh
Khoj
ChhAnbiin

in this context.



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Note added at 20 mins (2005-05-25 14:03:29 GMT)
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I think that you should have put \"head-on-collision\" as a separate question. However, it means an accident in which two cars hit each other\'s front end. Also called \"head-on crash.\"

And I think it can be translated as

Aamne sAmne ki takkar

if you want to render it in a simple way.

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Note added at 31 mins (2005-05-25 14:14:24 GMT)
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Case Studies on Accidents-----दुर्घटनाओं के संबंध में अनुसंधान/शोध/खोज/छानबीन


\"head-on-collision\"-----------आमने-सामने की टक्कर