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As the areal density rapidly changes, the signal reflection increases. In order to avoid the reflection between a magnetic recording head and a read/write driver on hard disk drive interconnects (HDDIs), the windowing technique is used to keep low insertion loss and it causes the higher crosstalk between lines. In this work, the crosstalk on idealized HDDI with windowing is investigated. The crosstalk represented by the scattering parameters calculated by using the full wave simulation software based on finite integral technique. From the results, the improvement of insertion loss and transmission bandwidth (23 dB bandwidth) can be found when the window percentage is increased. For the 90% windowed structure, these are improved as 4.27 dB at 1 GHz and 4.53 GHz comparing with the conventional structure, respectively. Besides, the crosstalk increases with the increasing of window percentage. However, it can be suppressed up to 5.68 dB in a range of 0.24-1 GHz when the window percentage is 90%. Furthermore, the 90% of windowed structure with 8 mm window pitch possess the lowest crosstalk about 30.22 dB in a range of 0.32-6.4 GHz. In addition, the placing position of windows in a reference plane with a half of the rest length at both ends should be avoided because it increases both crosstalk and insertion loss.

Thailand has witnessed very uneven spatial outcomes of economic policies pursued in the country since the 1970s. This partially resulted from top‐down, place‐based approaches favoring the already prosperous regions. Therefore, in order to bridge the territorial economic divide in the country, an alternative policy framework is needed to promote bottom‐up, place‐based initiatives led by local governments. As a starting point, we surveyed a stratified sample of local governments in Thailand to document and classify their economic development activities using the taxonomy of similar practices found in other countries. We examined how these practices are shaped by local conditions found in various localities.

The effect of backing layer windowing on write-to-read coupling based on s-parameter analysis by using 3D simulation tool is studied. The two different windowed structure patterns of TSA interconnection are compared to observe the transmission coefficient of write-to-read coupling. From simulation results, it is found that the windowed structure in the middle of the backing layer shows smaller transmission coefficient than that at lateral ofthe backing layer.

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