A sample Abstract follows. Try to find the one sentence without a grammatical error!
Recently, the research of micropayment systems has at-
tracted a lot of attention in the literature. Because of
its special feature that large amount of transactions may
occur while each transaction only deals with small value,
not only security but also efficiency should be carefully
considered in these systems, especially when considering
that these systems may be implemented in resource con-
strained mobile devices. In this paper, a novel lightweight
micropayment scheme with variable denomination is pro-
posed. Compared with those existing schemes with fixed
denomination, our proposed scheme not only guarantees
security goals, but also dramatically reduces the compu-
tational cost as well as the storage burden.
[my italics]
a a an an the the
Please use this pile and insert where applicable!
How can goals be guaranteed and not kicked or achieved?
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