Brain-centered theories of consciousness seem to face insuperable difficulties. While some philosophers now doubt that the hard problem of consciousness will ever be solved, others call for radically new approaches to conscious experience. In this article I resurrect a largely forgotten approach to consciousness known as neorealism. According to neorealism, consciousness is merely a part, or cr...

When agents are liquidity constrained, two options exist — borrow or sell assets. We compare the welfare properties of these options in two economies: in one, agents can borrow (issue inside bonds) and in the other they can sell government bonds (outside bonds). All transactions are voluntary, implying no taxation or forced redemption of private debt. We show that any allocation in the economy ...

Energy usage in many contemporary computing systems is constrained by factors other than computation. The major components of energy use include transferring data onchip in high-performance systems, activating and accessing sensor and display interfaces in wearable and mobile systems, and accessing and refreshing memories in all system types. The relative proportion of energy usage due to facto...

We consider a model of liquidity demand arising from a possible maturity mismatch between asset revenues and consumption. This liquidity demand can be met with either cash reserves (inside liquidity) or via asset sales for cash (outside liquidity). The question we address is, what determines the mix of inside and outside liquidity in equilibrium? An important source of inefficiency in our model...

We consider a model of liquidity demand arising from a possible maturity mismatch between asset revenues and consumption. This liquidity demand can be met with either cash reserves (inside liquidity) or via asset sales for cash (outside liquidity). The questions we address are: (a) what determines the mix of inside and outside liquidity in equilibrium? (b) does the market provide an efficient m...

Connexin protein can form single-membrane spanning channels (called hemichannels or connexons) that can dock with each other to span two closely apposed plasma membranes and thereby create gap junction channels. What keeps unapposed connexin hemichannels closed, and how do they open when part of junctional channels? The report from Tang et al. (2009) in this issue (see p. 555), along with a rec...

Health care education is developing at a high pace, all around the world. New ideas are needed, new ideas that work and help us meet the goals we set for improving health care education. PME wants to contribute to seeing with new eyes by offering its readers articles that are inspirational by nature. Articles with new ideas or with research based on new ideas that work. This inspiration combine...