Concept for a portable computer device: the Triple Pi

I have been curious about picking up a Raspberry Pi one board computer.

They are the standard hardware for nodes on the Toronto Mesh network, so with a suitable USB radio transceiver I could use it in small areas as a bridge to their network via the IPv6 Hyperboria network.

I could also use it to run Linux-based software-defined radio (SDR) software in combination with my USB radio receiver dongle. I could set up software to locate digital signals and then decode those which are not encrypted, or use it as a portable radio scanning rig.

At the same time, there seems to be awesome game emulation software which can be run on a Pi. With two USB-interface SNES-style controllers, I am told it has enough processing power to make a great SNES emulator.

I don’t have a screen with an HDMI input, so it might be worth getting a small portable display to use with the system. One neat idea would be to make the whole thing capable of running on its own batteries.

To start with, I will try to get a working setup that runs with the Pi and the display plugged into the wall. If it seems useful enough to be made portable, I’ll start thinking of battery hardware and case and transportation options for the whole system.

The hardware to get started will be about $100 plus the cost of the display. ToMesh has an installation party later this week where they will install the operating system and software stack necessary to use your Pi as a node.

Crystal Structure of a Y-family DNA Polymerase in a Ternary Complex with DNA Substrates and an Incoming Nucleotide

Sulfolobus solfataricus P2 DNA polymerase IV (Dpo4) is a DinB homolog that belongs to the recently described Y-family of DNA polymerases, which are best characterized by their low-fidelity synthesis on undamaged DNA templates and propensity to traverse normally replication-blocking lesions.

By Bathsheba

Mabee on Sojourner Truth and Frances Gage 1/2

[Frances] Gage‘s report, gradually becoming well known, wove myths about [Sojourner] Truth, myths that helped build up Truth into a heroic figure. Nevertheless, we must ask whether the frequent uncritical use of Gage’s report in recent years has led to misleading interpretations not only about Truth and her place in history, but also about early black-white relations at large.

When we compare Gage’s 1863 report of Truth’s speech with available records written in 1851 soon after the event, the comparison suggests that we should heed Gage’s own warning that she had “given but a faint sketch” of Truth’s speech. The comparison suggests that, unless evidence to the contrary shows up, important parts Gage’s report regarding the atmosphere of the convention, the contents of Truth’s speech, and the effect of the speech on the convention should be considered false. The comparison suggests that Gage, the poet, intended to present the symbolic truth of Truth’s words more than the literal truth; that Gage, the novelist, imagining that Harriet Beecher Stowe was looking over her shoulder, felt pressed to make Truth’s story more compelling than it was; that Gage, the passionate advocate of blacks’ and women’s rights, embellished her report to strengthen the causes she favored, imposing her own ideas and expression on what Truth said. Disappointing as it may be, the comparison makes it unlikely that Truth asked the thrilling question, “Ar’n’t I a woman?“, the principal words by which Truth is known today.

If we depend on contemporary accounts as more likely than Gage’s to be reliable, then we perceive that when Sojourner Truth began to speak, there were no signs of panic, no hissing, no mobbish opponents whom she could overcome. Then we find that Truth’s words, unadorned, if less dramatic and smooth than Gage wanted them to be, did not make her the one star of the convention, as Gage indicates, but nevertheless made her impressive.

When Truth’s biographers, following Gage, say that she turned the convention around from opposing to favouring women’s rights, we have to suspect that they may be telling us more what Gage wanted us to believe than what really happened. When recent writers on women’s and blacks’ history claim that white women advocating women’s rights were hostile to black women’s participation in the women’s movement, and they base their claims especially on Gage’s account of the supposed hostility to Truth at Akron, we have to wonder whether they are distorting history. Unless evidence to the contrary turns up, we have to regard Gage’s account of Truth’s asking the “Ar’n’t I a woman?” question as folklore, like the story of George Washington and the cherry tree. It may be suitable for telling to children, but not for serious understanding of Sojourner Truth and her times.

Mabee, Carleton. Sojourner Truth: Slave, Prophet, Legend. New York University Press, 1993. p. 80–81

2017–18 course 1 essay 1

This term’s first big batch of grading — essays for my Canadian politics course — is due no later than Monday evening. Please wish me fortitude in getting through the last three dozen.

I believe basically everyone finds grading stressful and tedious. It invalidates my ordinary procrastination flowchart, since it is always possible to devote time to long-term projects or self-care activities instead of reminding people that essays need to have a thesis, or tabulating grades in Excel and U of T’s poorly implemented online portal.