Software Transactional Memory (STM) can be defined as a generic nonblocking synchronization construct that allows correct sequential objects to be converted automatically into correct concurrent objects. In STM, a transaction is defined as a sequence of instructions that atomically modifies a set of concurrent objects. The original STM proposed by Shavit and Touitou worked on static transaction...

We present a theory for recent STM studies of Zn impurities in the superconductor Bi2Sr2CaCu2O8+delta, using insights from NMR experiments which show that there is a net S = 1/2 moment on the Cu ions near the Zn. We argue that the Kondo spin dynamics of this moment is the origin of the low bias peak in the differential conductance, rather than a resonance in a purely potential scattering model....

We develop the syntactic topic model (STM), a nonparametric Bayesian model of parsed documents. The STM generates words that are both thematically and syntactically constrained, which combines the semantic insights of topic models with the syntactic information available from parse trees. Each word of a sentence is generated by a distribution that combines document-specific topic weights and pa...

To realize the performance potential of multiple cores, software developers must architect their programs for concurrency. Unfortunately, for many applications, threads and locks are difficult to use efficiently and correctly. Thus, researchers have proposed transactional memory as a simpler alternative. To investigate if and how software transactional memory (STM) can help a programmer to para...

Scanning tunneling microscopy (STM), Auger electron spectroscopy (AES) and low energy electron diffraction have been used to follow the growth of Si films on Ag(111) at various temperatures. Using a simple growth model, we have simulated the distribution of film thickness as a function of coverage during evaporation, for the different temperatures. In the temperature regime where multilayer sil...

The atomic and electronic structures of the Si(111)-E3×E3-Ag surface are studied by first-principles calculations based on the density functional theory. It is found that a structural model consisting of two inequivalent Ag triangles is energetically more favorable than the well-established honeycomb-chained-triangle (HCT) model. The new structure should yield an empty-state STM image with a he...

Studies on short-term mating (STM) yield sex differences regarding preferences for attractiveness (important to women, very important to men) and social status (very important to women, not to men) in potential mates. Additionally, men generally report a greater desire to engage in STM than women. So far, this evidence is primarily based on studies using vignettes or surveys. The current study ...

Patients with apparently selective short-term memory (STM) deficits for semantic information have played an important role in developing multi-store theories of STM and challenge the idea that verbal STM is supported by maintaining activation in the language system. We propose that semantic STM deficits are not as selective as previously thought and can occur as a result of mild disruption to s...