As a consequence of compressive strain and alloying, the hole effective mass inp-type strained SiGe differs significantly from its Si value. Influencing the carrier concentrations in the base, the hole effective mass affects the base transport properties of npn SiGe HBTs. A new model for hole effective mass is presented in this work, which takes into consideration the dependence on temperature,...

Most hole filling approaches use techniques to fill up a hole first and then to smooth it. Very few tries rebuild features on the filled surface of the original 3D model. We propose an efficient hole-filling methodology which preserves sharp features of the geometry of the original model. The main idea is that we reconstruct feature curves in the missing parts of the given mesh before filling t...

Each of two parts has K coordination holes with the intent that each hole on onepart is paired and to be pinned with a corresponding hole on the other part. Whilethe nominal hole centers for each hole pair are identical, the actual hole centers willdeviate from their nominal values in some random fashion reflecting the inherent holecentering accuracy of the drilling process....

We construct evolutionary models of the populations of active galactic nuclei (AGN) and supermassive black holes, in which the black hole mass function grows at the rate implied by the observed luminosity function, given assumptions about the radiative efficiency and the luminosity in Eddington units. We draw on a variety of recent X-ray and optical measurements to estimate the bolometric AGN l...

An empirical model for forecasting solar wind speed related geomagnetic events is presented here. The model is based on the estimated location and size of solar coronal holes. This method differs from models that are based on photospheric magnetograms (e.g., Wang-Sheeley model) to estimate the open field line configuration. Rather than requiring the use of a full magnetic synoptic map, the meth...

Unbound outflows in the form of highly collimated jets and broad winds appear to be a ubiquitous feature of accreting black hole systems. The most powerful jets are thought to derive a significant fraction, if not the majority, of their power from the rotational energy of the black hole. Whatever the precise mechanism that causes them, these jets must, therefore, exert a braking torque on the b...

Finite temperature hole dynamics in the t−J model: exact results for high dimensions PACS. 71.10.Fd – Lattice fermion models (Hubbard model, etc.). Abstract. – We discuss the dynamics of a single hole in the t−J model at finite temperature, in the limit of large spatial dimensions. The problem is shown to yield a simple and physically transparent solution, that exemplifies the continuous therma...

A model is presented in which the strongest radio-emitting jet outflows are produced in black hole systems when the accretion is a geometrically thick (H/R ∼ 1) inflow (e.g., ADAF, CDAF) and if the black hole is rotating. For galactic black hole candidates, the model naturally accounts for the observed correlation of jet outflow with the black hole hard emission state and predicts an associatio...