Zhang Wenxin

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The study of school bullying has recently assumed an international dimension, but is faced with difficulties in finding terms in different languages to correspond to the English word bullying. To investigate the meanings given to various terms, a set of 25 stick-figure cartoons was devised, covering a range of social situations between peers. These cartoons(More)
The reliability of BGA packages is primarily affected by thermo-mechanical deformations in the assembly as a consequence of the CTE mismatch of the materials. Typical failure modes are low-cycle fatigue of second level solder joints or delamination of pads from the PCB.
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