Staying on track

Actin Motility: Staying on Track Takes a Little More Effort

The pigment cells of amphibians and fish have provided excellent models for understanding how actin and microtubule motors move organelles along the complex trailway of filaments in the cytoplasm. Recent work provides more evidence that these motors are engaged in a continuous tug-of-war.

Staying on Track: Common Minireview Features of DNA Helicases and Microtubule Motors

Staying on track: Planned goal striving is protected from disruptive internal states

Past implementation intention research focused on shielding goal striving from disruptive internal states (e.g., being anxious) by forming if–then plans that link these very states to instrumental coping responses. In the present line of research, we investigated whether planning out goal striving by means of if–then plans specifying opportunities to initiate goal-directed responses also protec...

Staying on Track: Common Features of DNA Helicases and Microtubule Motors

are likely to be relevant to other motors with multiple polymer-binding sites, such as the hexameric helicases of the DNA (Yu et al., 1996), which may act as a fail-St. Louis, Missouri 63122 safe to ensure high processivity. tioning of the motor between forward motion and disso-San Francisco, California 94143 ciation and can be defined quantitatively as P ϭ kf/ (k d ϩ k f), where k f and k d ar...

Staying on the Dole

We develop a simple model of labor market participation, human capital degradation, and re-training. We focus on how non-participation, as a distinct state from unemployment and employment, is determined by the welfare system in interaction with labor market conditions and personal characteristics. We provide a tractable framework to analyze how the decisions to exit the labor force and to miti...