Title: Default for Article 1: Exercise
Course: Applied English for Science and Technology

Q: Page 57, Column 2, Line 5

However, this approach allows only one-hop clusters to be formed and the hot spot problem does not be considered.

- The correct structure should be: ... the hot spot problem [...] considered.
A: is not

Q: Page 57, Column 2, Line 15

Olariu and Stojmenovic (2006) presented the first theoretical work to analyze avoidance of the energy hole problem and it has been proven that the unbalanced energy depletion is intrinsic and no routing strategy can avoid under some specific conditions in this study.

- The correct structure should be: ... no routing strategy [...] under some specific conditions in this study.
A: can be avoided

Q: Page 58, Column 1, Line 3

However, it shows somewhat an unrealistic architecture since they assume that CHs with super power are deployed or move to the best position where minimizes energy consumption.

- The correct structure should be: ... the best position [...] minimizes energy consumption.
A: which / that

Q: Page 58, Column 1, Line 27

Theoretical analysis and simulation studies show that EB-UCP outperforms in terms of balancing energy dissipation among sensor nodes and enlarging the lifetime of networks than EEUC and LEACH.

- In this sentence, the problem word is [...].
A: than

Q: Page 59, Column 1, Paragraph 3, Sentence 1

Each node in every layer become a tentative CH with the same probability pt which is defined by Eq. 3.

- The correct structure should be: Each node in every layer [...] a tentative CH ...
A: becomes

Q: Page 59, Column 1, Paragraph 3, Line 9

After the construction of SCH has been finished in lines 7-8, each tentative CH checks its SCH and makes a decision whether it can become a CH in lines 9-19.

- Instead of finished, the correct synonym would be [...].
A: completed / finalized / finalised

Q: Page 61, Column 1, SIMULATION RESULTS, Line 9

The experiments described in this part have been conducted with the aid of a well known simulation tool, Ns2.

- Although this use is acceptable, a better way of introducing Ns2 would be [...]
A: Ns2, a well known simulation tool
Gap 1 offers: a well-known simulation tool, Ns2; Ns2, a well known simulation tool

Q: Page 61, Column 2, Energy Efficiency, Sentence 1

In this subsection, the performance of EB-UCP, EEUC and LEACH in terms of network lifetime are compared.

- The correct structure should be: In this subsection, [...] of ...
A: the performances / performances

Q: Page 61, Column 2, Energy Efficiency, Line 6

Compared with the EB-UCP and EEUC, CHs in LEACH sends their packets to the sink node via single hop and the energy consumption is much higher.

- The correct structure should be: Compared with the EB-UCP andEEUC, CHs in LEACH [...] their packets ...
A: send

Q: Page 62, CONCLUSION, Sentence 1

The hot spot problem appears when employing the multihop routing in a clustering approach.

- The correct structure should be: ... when [...]
A: the multihop routing is employed