Turbocharged (TC) spark-ignited (SI) engines are popular as they combine high power output with good fuel economy. Furthermore, their emissions can be successfully reduced using a three way catalyst (TWC) provided that the airfuel ratio is precisely controlled. As the air-fuel ratio depends on the precision of the air charge estimate, this thesis is devoted to the systematic improvement of the ...

We present DKPro TC, a framework for supervised learning experiments on textual data. The main goal of DKPro TC is to enable researchers to focus on the actual research task behind the learning problem and let the framework handle the rest. It enables rapid prototyping of experiments by relying on an easy-to-use workflow engine and standardized document preprocessing based on the Apache Unstruc...

The Deuteronomy system supports efficient and scalable ACID transactions in the cloud by decomposing functions of a database storage engine kernel into: (a) a transactional component (TC) that manages transactions and their “logical” concurrency control and undo/redo recovery, but knows nothing about physical data location and (b) a data component (DC) that maintains a data cache and uses acces...

We study the efficiency at the maximal power ηmax of a finite-time Carnot cycle of a weakly interacting gas which we can regard as a nearly ideal gas. In several systems interacting with the hot and cold reservoirs of the temperatures Th and Tc, respectively, it is known that ηmax = 1− √ Tc/Th which is often called the Curzon-Ahlborn (CA) efficiency ηCA. For the first time numerical experiments...

In their recent article (1), Spillman and colleagues report the two Plasmodium falciparum proteins PfEH1 and PfEH2 to be two novel epoxide hydrolases with an atypical active-site architecture. We strongly believe that this conclusion is wrong for the reasons detailed in the following. Spillman et al. start from the observation that, based on sequence identity, epoxide hydrolases from the / hydr...

Continuous measurements of atmospheric organic and elemental carbon (OC and EC) were taken during the high-pollution fall and winter seasons at Xi’an, Shaanxi Province, China from September 2003 through February 2004. Battery-powered mini-volume samplers collected PM2.5 samples daily and PM10 samples every third day. Samples were also obtained from the plumes of residential coal combustion, mot...

The traditional architecture for a DBMS engine has the recovery, concurrency control and access method code tightly bound together in a storage engine for records. We propose a different approach, where the storage engine is factored into two layers (each of which might have multiple heterogeneous instances). A Transactional Component (TC) works at a logical level only: it knows about transacti...

Abstract The main energy source for the intensification of a tropical cyclone (TC) is widely accepted to be transfer from ocean atmosphere via surface fluxes. pathway through which these fluxes lead an increase in kinetic has typically been interpreted either terms total potential or dry available (APE), entropy-based heat engine viewpoint. Here, we use local theory APE construct budget moist i...