passive haptic learning

Researchers at Georgia Tech have taken a small step toward the dream of learning without effort.

Tactile taps teach rhythmic text entry: passive haptic learning of morse code

Passive Haptic Learning (PHL) is the acquisition of sensorimotor skills with little or no active attention to learning. This technique is facilitated by wearable computing, and applications are diverse. However, it is not known whether rhythm-based information can be conveyed passively. In a 12 participant study, we investigate whether Morse code, a rhythmbased text entry system, can be learned through PHL using the bone conduction transducer on Google Glass. After four hours of exposure to passive stimuli while focusing their attention on a distraction task, PHL participants achieved a 94% accuracy rate keying a pangram (a phrase with all the letters of the alphabet) using Morse code on Glass’s trackpad versus 53% for the control group. Most PHL participants achieved 100% accuracy before the end of the study. In written tests, PHL participants could write the codes for each letter of the alphabet with 98% accuracy versus 59% for control. When perceiving Morse code, PHL participants also performed significantly better than control: 83% versus 46% accuracy.

reduced work week as a carbon emissions strategy

Reducing the work week to four days would reduce carbon emissions.

Worktime Reduction as a Solution to Climate Change: Five Scenarios Compared for the UK

Reducing working hours in an economy has been discussed as a policy which may have benefits in achieving particular economic, social and environmental goals. This study proposes five different scenarios to reduce the working hours of full-time employees by 20% with the aim of cutting greenhouse gas emissions: a three-day weekend, a free Wednesday, reduced daily hours, increased holiday entitlement and a scenario in which the time reduction is efficiently managed by companies to minimise their office space. We conceptually analyse the effects of each scenario on time use patterns through both business and worker activities, and how these might affect energy consumption in the economy. To assess which of the scenarios may be most effective in reducing carbon emissions, this analytical framework is applied as a case study for the United Kingdom. The results suggest that three of the five scenarios offer similar benefits, and are preferable to the other two, with a difference between the best and worst scenarios of 13.03 MTCO2e. The study concludes that there is a clear preference for switching to a four-day working week over other possible work-reduction policies.

reservoirs, resilience and system dynamics

This article in Water Resources Research uses a system dynamics simulation to examine the resilience of a reservoir. Some of these concepts may be adaptable to other types of water resources systems or systems in general.

Comparison of static and dynamic resilience for a multipurpose reservoir operation

Reliability, resilience and vulnerability are the traditional risk measures used to assess the performance of a reservoir system. Among these measures, resilience is used to assess the ability of a reservoir system to recover from a failure event. However, the time independent static resilience does not consider the system characteristics, interaction of various individual components and does not provide much insight into reservoir performance from the beginning of the failure event until the full performance recovery. Knowledge of dynamic reservoir behavior under the disturbance offers opportunities for proactive and/or reactive adaptive response that can be selected to maximize reservoir resilience. A novel measure is required to provide insight into the dynamics of reservoir performance based on the reservoir system characteristics and its adaptive capacity. The reservoir system characteristics include, among others, reservoir storage curve, reservoir inflow, reservoir outflow capacity and reservoir operating rules. The reservoir adaptive capacity can be expressed using various impacts of reservoir performance under the disturbance (like reservoir release for meeting a particular demand, socio-economic consequences of reservoir performance, or resulting environmental state of the river upstream and downstream from the reservoir). Another way of expressing reservoir adaptive capacity to a disturbing event may include aggregated measures like reservoir robustness, redundancy, resourcefulness and rapidity. A novel measure that combines reservoir performance and its adaptive capacity is proposed in this paper and named ‘dynamic resilience’. The paper also proposes a generic simulation methodology for quantifying reservoir resilience as a function of time. The proposed resilience measure is applied to a single multi-purpose reservoir operation and tested for a set of failure scenarios. The dynamic behavior of reservoir resilience is captured using the system dynamics simulation approach, a feedback-based object-oriented method, very effective for modelling complex systems. The results of dynamic resilience are compared with the traditional performance measures in order to identify advantages of the proposed measure. The results confirm that the dynamic resilience is a powerful tool for selecting proactive and reactive adaptive response of a multipurpose reservoir to a disturbing event that cannot be achieved using traditional measures. The generic quantification approach proposed in the paper allows for easy use of dynamic resilience for planning and operations of various civil infrastructure systems.

breakthroughs in antibiotic resistance

There are potential breakthroughs against antibiotic-resistant bacteria, which I think is good as I’ve been coughing up some kind of alien green goo for about a week now.

An anti-infective synthetic peptide with dual antimicrobial and immunomodulatory activities

Antibiotic-resistant infections are predicted to kill 10 million people per year by 2050, costing the global economy $100 trillion. Therefore, there is an urgent need to develop alternative technologies. We have engineered a synthetic peptide called clavanin-MO, derived from a marine tunicate antimicrobial peptide, which exhibits potent antimicrobial and immunomodulatory properties both in vitro and in vivo. The peptide effectively killed a panel of representative bacterial strains, including multidrug-resistant hospital isolates. Antimicrobial activity of the peptide was demonstrated in animal models, reducing bacterial counts by six orders of magnitude, and contributing to infection clearance. In addition, clavanin-MO was capable of modulating innate immunity by stimulating leukocyte recruitment to the site of infection, and production of immune mediators GM-CSF, IFN-γ and MCP-1, while suppressing an excessive and potentially harmful inflammatory response by increasing synthesis of anti-inflammatory cytokines such as IL-10 and repressing the levels of pro-inflammatory cytokines IL-12 and TNF-α. Finally, treatment with the peptide protected mice against otherwise lethal infections caused by both Gram-negative and -positive drug-resistant strains. The peptide presented here directly kills bacteria and further helps resolve infections through its immune modulatory properties. Peptide anti-infective therapeutics with combined antimicrobial and immunomodulatory properties represent a new approach to treat antibiotic-resistant infections.

Washington State’s carbon tax vote

Washington State voters are considering a carbon tax. The proceeds would be used to offset other taxes, making it revenue neutral. This could be a national model, if we weren’t all so allergic to the word tax.

The proposal is strikingly simple and refreshingly bipartisan. According to Yes on I-732.org, I-732 would:

  • Directly address climate change by adding a tax of $25/ton on carbon emissions;
  • Reduce the statewide sales tax by 1%;
  • Add a tax credit of $1500/year for low-income households; and
  • Lower the Business and Occupation (B&O) tax on manufacturers to .001%.

This type of fossil fuel tax would be first of its kind in the United States, though it has been implemented elsewhere. According to the World Bank, 15 countries currently tax carbon. Sweden’s policy is the most aggressive, at rate of $168/ton. Closer to home, a carbon tax has been in place in British Columbia, Canada, since 2008, which has resulted in a 5-15% reduction in greenhouse gas (GHG) emissions. BC’s tax is much lower than Sweden’s, at a rate of $30/ton.

my election prediction

I have a little election prediction spreadsheet. It takes the poll averages for swing states as reported by RealClearPolitics, generates a random number for each with a 4% standard deviation, and runs 1,000 trials in about 10 seconds. Go to Nate Silver or other online sites for a much more professional and sophisticated approach. I do this just for fun and to help me understand how the system works. So without further ado, here is how I think Tuesday night might unfold. The poll closing times are the earliest closing times in a given state according to ballotpedia, so you would expect some numbers to start tricking in at that point. I’m writing Sunday around noon, just in case there is some big development between now and Tuesday.

Based on RealClearPolitics, if both candidates win the states they lead in right now, Hillary would win with 298 electoral votes to 240 for Trump. Nate Silver predicts 290-247, and puts the odds at 65-35. Betfair puts it at 323-215 and the odds at 80-20. My spreadsheet comes up with an electoral college average of 295-243 and odds of 85-15.

Here is one way the evening could unfold to get in the ballpark:

First, I assume Clinton and Trump have both won all the states considered relatively safe by RealClearPolitics. This means Hillary starts off with 218 and Trump with 165. Seems unfair, doesn’t it? But these are the demographics, and why the breathless media coverage of swing states is a bit misleading. If Trump is leading half the swing states on a given day, that doesn’t mean the race is anywhere near tied.

7:00 p.m. EST

  • Results start to trickle in from Florida, Georgia, Virginia and New Hampshire.
  • The night starts off with a bang for Clinton with wins in Florida and Virginia.
  • Trump gets Georgia and New Hampshire.
  • Clinton leads 247-185.

7:30 p.m. EST

  • North Carolina and Ohio
  • I’ll throw both to Trump.
  • 247-218. Getting slightly interesting.

8:00 p.m. EST

  • Pennsylvania and Michigan
  • I don’t think Trump has a realistic shot at either. They go to Clinton.
  • 283-218. It’s over!

9:00 p.m. EST

  • They split Arizona (Trum) and Colorado (Clinton).
  • 292-229

10:00 p.m. EST

  • Iowa and Nevada
  • I’ll throw both to Trump. I’ll also throw him New Mexico to look like slightly less of a loser.
  • 292-246

This is what I expect to happen. Of course, the votes get counted slowly, and we can pretend there is some suspense as they are counting votes in states that are not expected to be close. Still, I think we might all be in bed at 10 p.m. on the east coast knowing who the next President. And this is what I want to happen. Although I would enjoy some suspense on some level, rationally I know it is better not to live in interesting times.

For Trump to win, a lot of unlikely things have to fall into place, but here is a plausible scenario: Trump starts the night with a huge bang, winning Florida, Georgia, North Carolina, New Hampshire, and Ohio. Clinton gets Virginia. Trump would be up 252-218. By the way, I gave Clinton New Mexico to start off this time. Clinton wins Pennsylvania and Michigan, going up 254-252. They split Arizona and Colorado (263-263!). Trump gets Iowa and goes up 269-263. It comes down to Nevada. Right now it looks like Nevada is reasonably solid for Clinton, so it comes down to a 269-269 tie. The House of Representatives casts the deciding vote, picking Trump for President. The National Guard is deployed in some states to ensure order.

So Florida is a big deal, obviously. We knew that.

my final case against Trump

I write this two days before the election. Trump has announced that he intends to cancel all spending to deal with climate change if elected. The evidence that we need to deal with climate change is so clear, and it is so clearly an existential threat to our civilization, that this is completely unethical. If I liked everything else about Trump, it would be enough, by itself, to cause me to reject him. (For the record, I like nothing about him.) Combine it with the completely unacceptable bigotry, racism, and religious intolerance, and it is just completely unacceptable. Finally, the lack of universal health care continues to be an international disgrace for our country. But we are closer thanks to Obama’s efforts to take on a Congress bought and paid for by the finance industry. Trump has vowed to destroy this progress and replace it with…nothing. Completely unacceptable.

Speaking of the finance industry, if a complex crisis like the 2007-8 financial crisis were to arise, we can’t trust Trump to understand it or to seek out advice from people who understand it. I don’t expect Hillary Clinton to take bold action to support long-term financial stability, which is what we need, but I do trust her to keep a cool head in a crisis, seek out competent advice, and make rational decisions. Similarly, in case of geopolitical crisis, I don’t expect her to be a strong force for peace, but I trust her to keep a cool head, seek out competent advice, and make rational decisions. Trump doesn’t have the ability to understand complex issues, yet he is overconfident and doesn’t know what he doesn’t know, and if he seeks out the advice of others at all, I wouldn’t trust him to know whose advice to seek. Finally, he does not appear to be rational at times. I think he could easily make some horrible mistake if and when he is confronted by a crisis.

I don’t think either candidate will take bold action on campaign finance reform. Bernie Sanders was the candidate for that. Prove me wrong, Hillary!

3C

We’re on a path for 3 degrees C over pre-industrial temperatures, much higher than the target of 1.5-2 C, says the United Nations Environment Program.

The emissions gap for 2030 is 12 to 14
GtCO2e compared with 2°C scenarios, for
1.5°C the gap is three GtCO2e larger. Even
if fully implemented, the unconditional
Intended Nationally Determined Contributions
are only consistent with staying
below an increase in temperature of 3.2°C
by 2100 and 3.0°C, if conditional Intended
Nationally Determined Contributions are
included.